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Key Value
engine mlx
prompt completion
temp 0.2
top_p 0.95
max_new_tokens 1024
n_completions 10

Solutions

func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    return true
                }
            }
        }
    }
    return false
}
```swift
// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    return true
                }
            }
        }
    }
    return false
}
<|file_separator|>

func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    result = true
                }
            }
        }
    }
    return result
}
```swift
// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    result = true
                }
            }
        }
    }
    return result
}
<|file_separator|>

func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    result = true
                }
            }
        }
    }
    return result
}
```swift
// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    result = true
                }
            }
        }
    }
    return result
}

// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    result = true
                }
            }
        }
    }
    return result
}

// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    result = true
                }
            }
        }
    }
    return result
}

// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    result = true
                }
            }
        }
    }
    return result
}

// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    result = true
                }
            }
        }
    }
    return result
}

// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i

func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    var i = 0
    while i < numbers.count {
        var j = i + 1
        while j < numbers.count {
            if abs(numbers[i] - numbers[j]) <= threshold {
                result = true
                break
            }
            j += 1
        }
        i += 1
    }
    return result
}
```swift
// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    var i = 0
    while i < numbers.count {
        var j = i + 1
        while j < numbers.count {
            if abs(numbers[i] - numbers[j]) <= threshold {
                result = true
                break
            }
            j += 1
        }
        i += 1
    }
    return result
}

// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    var i = 0
    while i < numbers.count {
        var j = i + 1
        while j < numbers.count {
            if abs(numbers[i] - numbers[j]) <= threshold {
                result = true
                break
            }
            j += 1
        }
        i += 1
    }
    return result
}
<|file_separator|>

func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var hasCloseElements = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    hasCloseElements = true
                    break
                }
            }
        }
    }
    return hasCloseElements
}
```swift
// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var hasCloseElements = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    hasCloseElements = true
                    break
                }
            }
        }
    }
    return hasCloseElements
}
<|file_separator|>

func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    result = true
                }
            }
        }
    }
    return result
}
```swift
// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    result = true
                }
            }
        }
    }
    return result
}
<|file_separator|>

func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
  for i in 0..<numbers.count {
    for j in 0..<numbers.count {
      if i != j {
        if abs(numbers[i] - numbers[j]) <= threshold {
          return true
        }
      }
    }
  }
  return false
}
```swift
// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
  for i in 0..<numbers.count {
    for j in 0..<numbers.count {
      if i != j {
        if abs(numbers[i] - numbers[j]) <= threshold {
          return true
        }
      }
    }
  }
  return false
}
<|file_separator|>

func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    result = true
                }
            }
        }
    }
    return result
}
```swift
// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    result = true
                }
            }
        }
    }
    return result
}
<|file_separator|>

func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i == j {
                continue
            }
            if abs(numbers[i] - numbers[j]) <= threshold {
                result = true
                break
            }
        }
    }
    return result
}
```swift
// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i == j {
                continue
            }
            if abs(numbers[i] - numbers[j]) <= threshold {
                result = true
                break
            }
        }
    }
    return result
}
<|file_separator|>

func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    result = true
                    break
                }
            }
        }
    }
    return result
}
```swift
// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    result = true
                    break
                }
            }
        }
    }
    return result
}

// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    result = true
                    break
                }
            }
        }
    }
    return result
}

// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    result = true
                    break
                }
            }
        }
    }
    return result
}

// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    result = true
                    break
                }
            }
        }
    }
    return result
}

// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                if abs(numbers[i] - numbers[j]) <= threshold {
                    result = true
                    break
                }
            }
        }
    }
    return result
}

// Check if in given array of numbers, are any two numbers closer to each other than
// given threshold.
// hasCloseElements(numbers: [1.0, 2.0, 3.0], threshold: 0.5) == false
// hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3) == true
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
    var result = false
    for i in 0..<numbers.count {

func separateParenGroups(parenString: String) -> [String] {
    var parenGroups = [String]()
    var parenGroup = ""
    var parenStack = [Character]()
    for paren in parenString {
        if paren == "(" {
            parenStack.append(paren)
        } else if paren == ")" {
            if parenStack.count == 0 {
                parenGroup = ""
            } else {
                parenStack.removeLast()
            }
        }
        parenGroup += String(paren)
        if parenStack.count == 0 {
            parenGroups.append(parenGroup)
            parenGroup = ""
        }
    }
    return parenGroups
}

func palindromes(strings: [String]) -> [String] {
    var palindromes = [String]()
    for string in strings {
        if string == String(string.reversed()) {
            palindromes.append(string)
        }
    }
    return palindromes
}

func palindromes(strings: [String]) -> [String] {
    var palindromes = [String]()
    for string in strings {
        if string == String(string.reversed()) {
            palindromes.append(string)
        }
    }
    return palindromes.reversed()
}

func palindromes(strings: [String]) -> [String] {
    var palindromes = [String]()
    for string in strings {
        if string == String(string.reversed()) {
            palindromes.append(string.uppercased())
        }
    }
    return palindromes.reversed()
}

func palindromes(strings: [String]) -> [String] {
    var palindromes = [String]()
    for string in strings {
        if string == String(string.reversed()) {
            palindromes.append(string.uppercased())
        }
    }
    return palindromes.reversed().sorted()
}

func palindromes(strings: [String]) -> [String] {
    var palindromes = [String]()
    for string in strings {
        if string == String(string.reversed()) {
            palindromes.append(string.uppercased())
        }
    }
    return palindromes.reversed().sorted().sorted().sorted().sorted().sorted()
}
```swift
// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    var parenGroups = [String]()
    var parenGroup = ""
    var parenStack = [Character]()
    for paren in parenString {
        if paren == "(" {
            parenStack.append(paren)
        } else if paren == ")" {
            if parenStack.count == 0 {
                parenGroup = ""
            } else {
                parenStack.removeLast()
            }
        }
        parenGroup += String(paren)
        if parenStack.count == 0 {
            parenGroups.append(parenGroup)
            parenGroup = ""
        }
    }
    return parenGroups
}

// Input to this function is an array of strings. Your goal is to return the array of strings with
// all the strings that are palindromes in the original array.
// palindromes(strings: ["racecar", "radar", "level", "noon", "racecar"]) == ["racecar", "radar", "level", "noon"]
func palindromes(strings: [String]) -> [String] {
    var palindromes = [String]()
    for string in strings {
        if string == String(string.reversed()) {
            palindromes.append(string)
        }
    }
    return palindromes
}

// Input to this function is an array of strings. Your goal is to return the array of strings with
// all the strings that are palindromes in the original array, but in reverse order.
// palindromes(strings: ["racecar", "radar", "level", "noon", "racecar"]) == ["racecar", "radar", "level", "noon"]
func palindromes(strings: [String]) -> [String] {
    var palindromes = [String]()
    for string in strings {
        if string == String(string.reversed()) {
            palindromes.append(string)
        }
    }
    return palindromes.reversed()
}

// Input to this function is an array of strings. Your goal is to return the array of strings with
// all the strings that are palindromes in the original array, but in reverse order, and in uppercase.
// palindromes(strings: ["racecar", "radar", "level", "noon", "racecar"]) == ["RACE", "RAD", "LEVEL", "NOON"]
func palindromes(strings: [String]) -> [String] {
    var palindromes = [String]()
    for string in strings {
        if string == String(string.reversed()) {
            palindromes.append(string.uppercased())
        }
    }
    return palindromes.reversed()
}

// Input to this function is an array of strings. Your goal is to return the array of strings with
// all the strings that are palindromes in the original array, but in reverse order, and in uppercase,
// and in the original order.
// palindromes(strings: ["racecar", "radar", "level", "noon", "racecar"]) == ["RACE", "RAD", "LEVEL", "NOON"]
func palindromes(strings: [String]) -> [String] {
    var palindromes = [String]()
    for string in strings {
        if string == String(string.reversed()) {
            palindromes.append(string.uppercased())
        }
    }
    return palindromes.reversed().sorted()
}

// Input to this function is an array of strings. Your goal is to return the array of strings with
// all the strings that are palindromes in the original array, but in reverse order, and in uppercase,
// and in the original order, and in the original order, and in the original order, and in the original order.
// palindromes(strings: ["racecar", "radar", "level", "noon", "racecar"]) == ["RACE", "RAD", "LEVEL", "NOON"]
func palindromes(strings: [String]) -> [String] {
    var palindromes = [String]()
    for string in strings {
        if string == String(string.reversed()) {
            palindromes.append(string.uppercased())
        }
    }
    return palindromes.reversed().sorted().sorted().sorted().sorted().sorted()
}

// Input to this function is an array of strings. Your goal is to return the array of strings with
// all the strings that are palindromes in the original array, but in reverse order, and in uppercase,
// and in the original order, and in the original order,
func palindromes(strings: [String]) -> [String] { // invalid redeclaration of 'palindromes(strings:)'
func palindromes(strings: [String]) -> [String] { // invalid redeclaration of 'palindromes(strings:)'
func palindromes(strings: [String]) -> [String] { // invalid redeclaration of 'palindromes(strings:)'
func palindromes(strings: [String]) -> [String] { // invalid redeclaration of 'palindromes(strings:)'

func separateParenGroups(parenString: String) -> [String] {
    var parenGroups = [String]()
    var parenStack = [String]()
    var parenString = parenString
    
    while parenString.count > 0 {
        if parenString.first == "(" {
            parenStack.append(parenString.first!)
            parenString.removeFirst()
        } else if parenString.first == ")" {
            if parenStack.count == 0 {
                parenStack.append(parenString.first!)
                parenString.removeFirst()
            } else {
                parenStack.removeLast()
                parenString.removeFirst()
            }
        } else {
            parenString.removeFirst()
        }
    }
    
    for paren in parenStack {
        parenGroups.append(paren)
    }
    
    return parenGroups
}
```swift
// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    var parenGroups = [String]()
    var parenStack = [String]()
    var parenString = parenString
    
    while parenString.count > 0 {
        if parenString.first == "(" {
            parenStack.append(parenString.first!)
            parenString.removeFirst()
        } else if parenString.first == ")" {
            if parenStack.count == 0 {
                parenStack.append(parenString.first!)
                parenString.removeFirst()
            } else {
                parenStack.removeLast()
                parenString.removeFirst()
            }
        } else {
            parenString.removeFirst()
        }
    }
    
    for paren in parenStack {
        parenGroups.append(paren)
    }
    
    return parenGroups
}
<|file_separator|>
parenStack.append(parenString.first!) // cannot convert value of type 'String.Element' (aka 'Character') to expected argument type 'String'
parenStack.append(parenString.first!) // cannot convert value of type 'String.Element' (aka 'Character') to expected argument type 'String'

func separateParenGroups(parenString: String) -> [String] {
    var parenGroups = [String]()
    var parenGroup = ""
    var parenStack = [String]()
    
    for paren in parenString {
        if paren == "(" {
            parenStack.append(String(paren))
        } else if paren == ")" {
            if parenStack.count == 0 {
                parenGroup += String(paren)
            } else {
                parenStack.removeLast()
            }
        } else {
            parenGroup += String(paren)
        }
        
        if parenStack.count == 0 {
            parenGroups.append(parenGroup)
            parenGroup = ""
        }
    }
    
    return parenGroups
}
```swift
// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    var parenGroups = [String]()
    var parenGroup = ""
    var parenStack = [String]()
    
    for paren in parenString {
        if paren == "(" {
            parenStack.append(String(paren))
        } else if paren == ")" {
            if parenStack.count == 0 {
                parenGroup += String(paren)
            } else {
                parenStack.removeLast()
            }
        } else {
            parenGroup += String(paren)
        }
        
        if parenStack.count == 0 {
            parenGroups.append(parenGroup)
            parenGroup = ""
        }
    }
    
    return parenGroups
}
<|file_separator|>
 // XCTAssertTrue failed

func separateParenGroups(parenString: String) -> [String] {
    var parenGroups = [String]()
    var parenStack = [String]()
    var parenString = parenString
    
    while parenString.count > 0 {
        if parenString.first == "(" {
            parenStack.append(parenString.first!)
            parenString.remove(at: parenString.startIndex)
        } else if parenString.first == ")" {
            if parenStack.count == 0 {
                parenString.remove(at: parenString.startIndex)
            } else {
                parenStack.remove(at: parenStack.count - 1)
                parenString.remove(at: parenString.startIndex)
            }
        } else {
            parenString.remove(at: parenString.startIndex)
        }
    }
    
    for paren in parenStack {
        parenGroups.append(paren)
    }
    
    return parenGroups
}
```swift
// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    var parenGroups = [String]()
    var parenStack = [String]()
    var parenString = parenString
    
    while parenString.count > 0 {
        if parenString.first == "(" {
            parenStack.append(parenString.first!)
            parenString.remove(at: parenString.startIndex)
        } else if parenString.first == ")" {
            if parenStack.count == 0 {
                parenString.remove(at: parenString.startIndex)
            } else {
                parenStack.remove(at: parenStack.count - 1)
                parenString.remove(at: parenString.startIndex)
            }
        } else {
            parenString.remove(at: parenString.startIndex)
        }
    }
    
    for paren in parenStack {
        parenGroups.append(paren)
    }
    
    return parenGroups
}

// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    var parenGroups = [String]()
    var parenStack = [String]()
    var parenString = parenString
    
    while parenString.count > 0 {
        if parenString.first == "(" {
            parenStack.append(parenString.first!)
            parenString.remove(at: parenString.startIndex)
        } else if parenString.first == ")" {
            if parenStack.count == 0 {
                parenString.remove(at: parenString.startIndex)
            } else {
                parenStack.remove(at: parenStack.count - 1)
                parenString.remove(at: parenString.startIndex)
            }
        } else {
            parenString.remove(at: parenString.startIndex)
        }
    }
    
    for paren in parenStack {
        parenGroups.append(paren)
    }
    
    return parenGroups
}

// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    var parenGroups = [String]()
    var parenStack = [String]()
    var parenString = parenString
    
    while parenString.count > 0 {
        if parenString.first == "(" {
            parenStack.append(parenString.first!)
            parenString.remove(at: parenString.startIndex)
        } else if parenString.first == ")" {
            if parenStack.count == 0 {
                parenString.remove(at: parenString.startIndex)
            } else {
                parenStack.remove(at: parenStack.count - 1)
                parenString.remove(at: parenString.startIndex)
            }
        } else {
            parenString.remove(at: parenString.startIndex)
        }
    }
    
    for paren in parenStack {
        parenGroups.append(paren)
    }
    
    return parenGroups
}

// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    var parenGroups = [String]()
    var parenStack = [String]()
    var parenString = parenString
    
    while parenString.count > 0 {
        if parenString.first == "(" {
            parenStack.append(parenString.first!)
            parenString.remove(at: parenString.startIndex)
        } else
parenStack.append(parenString.first!) // cannot convert value of type 'String.Element' (aka 'Character') to expected argument type 'String'

func separateParenGroups(parenString: String) -> [String] {
    // TODO: Implement this function
}

func permute(arr: [String]) -> [String] {
    // TODO: Implement this function
}
```swift
// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    // TODO: Implement this function
}

// Input to this function is an array of strings. Your goal is to return an array of strings that are
// permutations of the original array.
// Permutations are strings that are generated by rearranging the characters of the original string.
// For example, "abc" has 6 permutations: "abc", "acb", "bac", "bca", "cab", and "cba".
// permute(arr: ["abc", "def", "ghi"]) == ["abc", "acb", "bac", "bca", "cab", "cba", "def", "def", "ghi"]
func permute(arr: [String]) -> [String] {
    // TODO: Implement this function
}

// Input to this function is an array of strings. Your goal is to return an array of strings that are
// permutations of the original array.
// Permutations are strings that are generated by rearranging the characters of the original string.
// For example, "abc" has 6 permutations: "abc", "acb", "bac", "bca", "cab", and "cba".
// permute(arr: ["abc", "def", "ghi"]) == ["abc", "acb", "bac", "bca", "cab", "cba", "def", "def", "ghi"]
func permute(arr: [String]) -> [String] {
    // TODO: Implement this function
}

// Input to this function is an array of strings. Your goal is to return an array of strings that are
// permutations of the original array.
// Permutations are strings that are generated by rearranging the characters of the original string.
// For example, "abc" has 6 permutations: "abc", "acb", "bac", "bca", "cab", and "cba".
// permute(arr: ["abc", "def", "ghi"]) == ["abc", "acb", "bac", "bca", "cab", "cba", "def", "def", "ghi"]
func permute(arr: [String]) -> [String] {
    // TODO: Implement this function
}

// Input to this function is an array of strings. Your goal is to return an array of strings that are
// permutations of the original array.
// Permutations are strings that are generated by rearranging the characters of the original string.
// For example, "abc" has 6 permutations: "abc", "acb", "bac", "bca", "cab", and "cba".
// permute(arr: ["abc", "def", "ghi"]) == ["abc", "acb", "bac", "bca", "cab", "cba", "def", "def", "ghi"]
func permute(arr: [String]) -> [String] {
    // TODO: Implement this function
}

// Input to this function is an array of strings. Your goal is to return an array of strings that are
// permutations of the original array.
// Permutations are strings that are generated by rearranging the characters of the original string.
// For example, "abc" has 6 permutations: "abc", "acb", "bac", "bca", "cab", and "cba".
// permute(arr: ["abc", "def", "ghi"]) == ["abc", "acb", "bac", "bca", "cab", "cba", "def", "def", "ghi"]
func permute(arr: [String]) -> [String] {
    // TODO: Implement this function
}

// Input to this function is an array of strings. Your goal is to return an array of strings that are
// permutations of the original array.
// Permutations are strings that are generated by rearranging the characters of the original string.
// For example, "abc" has 6 permutations: "abc", "acb", "bac", "bca", "cab", and "cba".
// permute(arr: ["abc", "def", "ghi"]) == ["abc", "acb", "bac", "bca", "cab", "cba", "def", "def", "ghi"]
func permute(arr: [String]) -> [String] {
    // TODO: Implement this function
}

// Input to this function is an array of strings. Your goal is to return an array of strings that are
// permutations of the original array.
// Permutations are strings that are generated by rearranging the characters of the original string.
// For example, "abc" has 6 permutations: "abc", "acb", "bac", "bca", "cab", and "cba".
// permute(arr: ["abc", "def", "ghi"]) == ["abc", "acb", "bac", "bca", "cab", "
} // missing return in global function expected to return '[String]'
} // missing return in global function expected to return '[String]'

func separateParenGroups(parenString: String) -> [String] {
    var parenGroups = [String]()
    var parenStack = [String]()
    var parenGroup = ""
    
    for paren in parenString {
        if paren == "(" {
            parenStack.append(String(paren))
            parenGroup += String(paren)
        } else if paren == ")" {
            parenStack.removeLast()
            parenGroup += String(paren)
            if parenStack.isEmpty {
                parenGroups.append(parenGroup)
                parenGroup = ""
            }
        }
    }
    
    return parenGroups
}
```swift
// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    var parenGroups = [String]()
    var parenStack = [String]()
    var parenGroup = ""
    
    for paren in parenString {
        if paren == "(" {
            parenStack.append(String(paren))
            parenGroup += String(paren)
        } else if paren == ")" {
            parenStack.removeLast()
            parenGroup += String(paren)
            if parenStack.isEmpty {
                parenGroups.append(parenGroup)
                parenGroup = ""
            }
        }
    }
    
    return parenGroups
}

// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    var parenGroups = [String]()
    var parenStack = [String]()
    var parenGroup = ""
    
    for paren in parenString {
        if paren == "(" {
            parenStack.append(String(paren))
            parenGroup += String(paren)
        } else if paren == ")" {
            parenStack.removeLast()
            parenGroup += String(paren)
            if parenStack.isEmpty {
                parenGroups.append(parenGroup)
                parenGroup = ""
            }
        }
    }
    
    return parenGroups
}
<|file_separator|>

func separateParenGroups(parenString: String) -> [String] {
    var parenGroups = [String]()
    var parenStack = [String]()
    
    for paren in parenString.components(separatedBy: " ") {
        if paren.count == 0 {
            continue
        }
        
        if paren.count == 1 {
            parenStack.append(paren)
            continue
        }
        
        if parenStack.count == 0 {
            parenStack.append(paren)
            continue
        }
        
        if parenStack.last == "(" {
            parenStack.append(paren)
            continue
        }
        
        if parenStack.last == ")" {
            parenStack.removeLast()
            continue
        }
    }
    
    for paren in parenStack {
        parenGroups.append(paren)
    }
    
    return parenGroups
}
```swift
// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    var parenGroups = [String]()
    var parenStack = [String]()
    
    for paren in parenString.components(separatedBy: " ") {
        if paren.count == 0 {
            continue
        }
        
        if paren.count == 1 {
            parenStack.append(paren)
            continue
        }
        
        if parenStack.count == 0 {
            parenStack.append(paren)
            continue
        }
        
        if parenStack.last == "(" {
            parenStack.append(paren)
            continue
        }
        
        if parenStack.last == ")" {
            parenStack.removeLast()
            continue
        }
    }
    
    for paren in parenStack {
        parenGroups.append(paren)
    }
    
    return parenGroups
}
<|file_separator|>
 // XCTAssertTrue failed

func separateParenGroups(parenString: String) -> [String] {
    var parenGroups = [String]()
    var parenStack = [String]()
    var parenGroup = ""
    
    for paren in parenString {
        if paren == "(" {
            parenStack.append(String(paren))
            parenGroup = ""
        } else if paren == ")" {
            parenGroup = parenStack.popLast()! + parenGroup
            parenGroups.append(parenGroup)
        } else {
            parenGroup += String(paren)
        }
    }
    
    return parenGroups
}
```swift
// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    var parenGroups = [String]()
    var parenStack = [String]()
    var parenGroup = ""
    
    for paren in parenString {
        if paren == "(" {
            parenStack.append(String(paren))
            parenGroup = ""
        } else if paren == ")" {
            parenGroup = parenStack.popLast()! + parenGroup
            parenGroups.append(parenGroup)
        } else {
            parenGroup += String(paren)
        }
    }
    
    return parenGroups
}
<|file_separator|>
 // XCTAssertTrue failed

func separateParenGroups(parenString: String) -> [String] {
    // Write your code here
    var parenGroups = [String]()
    var parenStack = [String]()
    
    for paren in parenString {
        if paren == "(" {
            parenStack.append("(")
        } else if paren == ")" {
            if parenStack.count == 0 {
                parenGroups.append(")")
            } else {
                parenStack.removeLast()
            }
        }
    }
    
    for paren in parenStack {
        parenGroups.append(paren)
    }
    
    return parenGroups
}
```swift
// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    // Write your code here
    var parenGroups = [String]()
    var parenStack = [String]()
    
    for paren in parenString {
        if paren == "(" {
            parenStack.append("(")
        } else if paren == ")" {
            if parenStack.count == 0 {
                parenGroups.append(")")
            } else {
                parenStack.removeLast()
            }
        }
    }
    
    for paren in parenStack {
        parenGroups.append(paren)
    }
    
    return parenGroups
}
<|file_separator|>
 // XCTAssertTrue failed

func separateParenGroups(parenString: String) -> [String] {
    // TODO: Implement this function
    return []
}
```swift
// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    // TODO: Implement this function
    return []
}

// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    // TODO: Implement this function
    return []
}

// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    // TODO: Implement this function
    return []
}

// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    // TODO: Implement this function
    return []
}

// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    // TODO: Implement this function
    return []
}

// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    // TODO: Implement this function
    return []
}

// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    // TODO: Implement this function
    return []
}

// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    // TODO: Implement this function
    return []
}

// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input string.
// separateParenGroups(parenString: "( ) (( )) (( )( ))") == ["()", "(())", "(()())"]
func separateParenGroups(parenString: String) -> [String] {
    // TODO: Implement this function
    return []
}

// Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those
 // XCTAssertTrue failed

func truncateNumber(number: Double) -> Double {
  return number - Int(number)
}
```swift
// Given a positive floating point number, it can be decomposed into
// and integer part (largest integer smaller than given number) and decimals
// (leftover part always smaller than 1).
// Return the decimal part of the number.
// truncateNumber(number: 3.5) == 0.5
func truncateNumber(number: Double) -> Double {
  return number - Int(number)
}
<|file_separator|>
return number - Int(number) // cannot convert value of type 'Int' to expected argument type 'Double'

func truncateNumber(number: Double) -> Double {
    return number - floor(number)
}

func sumDigits(number: Int) -> Int {
    var sum = 0
    var num = number
    while num > 0 {
        sum += num % 10
        num /= 10
    }
    return sum
}

func sumDigits(number: Int) -> Int {
    return String(number).reduce(0, { $0 + Int(String($1)) })
}
```swift
// Given a positive floating point number, it can be decomposed into
// and integer part (largest integer smaller than given number) and decimals
// (leftover part always smaller than 1).
// Return the decimal part of the number.
// truncateNumber(number: 3.5) == 0.5
func truncateNumber(number: Double) -> Double {
    return number - floor(number)
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    var sum = 0
    var num = number
    while num > 0 {
        sum += num % 10
        num /= 10
    }
    return sum
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0, { $0 + Int(String($1)) })
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    var sum = 0
    var num = number
    while num > 0 {
        sum += num % 10
        num /= 10
    }
    return sum
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0, { $0 + Int(String($1)) })
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0, { $0 + Int(String($1)) })
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0, { $0 + Int(String($1)) })
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0, { $0 + Int(String($1)) })
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0, { $0 + Int(String($1)) })
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0, { $0 + Int(String($1)) })
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0, { $0 + Int(String($1)) })
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0, { $0 + Int(String($1)) })
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0, { $0 + Int(String($1)) })
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0, { $0 + Int(String($1)) })
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0, { $0 + Int(String($1)) })
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0, { $0 + Int(String($1)) })
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
func sumDigits(number: Int) -> Int { // invalid redeclaration of 'sumDigits(number:)'
return String(number).reduce(0, { $0 + Int(String($1)) }) // value of optional type 'Int?' must be unwrapped to a value of type 'Int'

func truncateNumber(number: Double) -> Double {
    return number - Double(Int(number))
}
```swift
// Given a positive floating point number, it can be decomposed into
// and integer part (largest integer smaller than given number) and decimals
// (leftover part always smaller than 1).
// Return the decimal part of the number.
// truncateNumber(number: 3.5) == 0.5
func truncateNumber(number: Double) -> Double {
    return number - Double(Int(number))
}
<|file_separator|>

func truncateNumber(number: Double) -> Double {
    return number - Double(Int(number))
}
```swift
// Given a positive floating point number, it can be decomposed into
// and integer part (largest integer smaller than given number) and decimals
// (leftover part always smaller than 1).
// Return the decimal part of the number.
// truncateNumber(number: 3.5) == 0.5
func truncateNumber(number: Double) -> Double {
    return number - Double(Int(number))
}
<|file_separator|>

func truncateNumber(number: Double) -> Double {
    return number - floor(number)
}

func nextLargerNumber(number: Int) -> Int {
    var number = number
    var digits = [Int]()
    while number > 0 {
        digits.append(number % 10)
        number /= 10
    }
    digits.reverse()
    var i = 0
    while i < digits.count - 1 {
        if digits[i] < digits[i + 1] {
            break
        }
        i += 1
    }
    if i == digits.count - 1 {
        return -1
    }
    var j = digits.count - 1
    while j > i {
        if digits[j] > digits[i] {
            break
        }
        j -= 1
    }
    var temp = digits[i]
    digits[i] = digits[j]
    digits[j] = temp
    j = digits.count - 1
    while i < j {
        temp = digits[i]
        digits[i] = digits[j]
        digits[j] = temp
        i += 1
        j -= 1
    }
    var result = 0
    for digit in digits {
        result = result * 10 + digit
    }
    return result
}

func nextSmallerNumber(number: Int) -> Int {
    var number = number
    var digits = [Int]()
    while number > 0 {
        digits.append(number % 10)
        number /= 10
    }
    digits.reverse()
    var i = 0
    while i < digits.count - 1 {
        if digits[i] > digits[i + 1] {
            break
        }
        i += 1
    }
    if i == digits.count - 1 {
        return -1
    }
    var j = digits.count - 1
    while j > i {
        if digits[j] < digits[i] {
            break
        }
        j -= 1
    }
    var temp = digits[i]
    digits[i] = digits[j]
    digits[j] = temp
    j = digits.count - 1
    while i < j {
        temp = digits[i]
        digits[i] = digits[j]
        digits[j] = temp
        i += 1
        j -= 1
    }
    var result = 0
    for digit in digits {
        result = result * 10 + digit
    }
    return result
}
```swift
// Given a positive floating point number, it can be decomposed into
// and integer part (largest integer smaller than given number) and decimals
// (leftover part always smaller than 1).
// Return the decimal part of the number.
// truncateNumber(number: 3.5) == 0.5
func truncateNumber(number: Double) -> Double {
    return number - floor(number)
}

// Given a positive integer, return the next largest number that has the same
// number of digits and the same set of digits.
// nextLargerNumber(12345) == 12543
func nextLargerNumber(number: Int) -> Int {
    var number = number
    var digits = [Int]()
    while number > 0 {
        digits.append(number % 10)
        number /= 10
    }
    digits.reverse()
    var i = 0
    while i < digits.count - 1 {
        if digits[i] < digits[i + 1] {
            break
        }
        i += 1
    }
    if i == digits.count - 1 {
        return -1
    }
    var j = digits.count - 1
    while j > i {
        if digits[j] > digits[i] {
            break
        }
        j -= 1
    }
    var temp = digits[i]
    digits[i] = digits[j]
    digits[j] = temp
    j = digits.count - 1
    while i < j {
        temp = digits[i]
        digits[i] = digits[j]
        digits[j] = temp
        i += 1
        j -= 1
    }
    var result = 0
    for digit in digits {
        result = result * 10 + digit
    }
    return result
}

// Given a positive integer, return the next smaller number that has the same
// number of digits and the same set of digits.
// nextSmallerNumber(12345) == 12343
func nextSmallerNumber(number: Int) -> Int {
    var number = number
    var digits = [Int]()
    while number > 0 {
        digits.append(number % 10)
        number /= 10
    }
    digits.reverse()
    var i = 0
    while i < digits.count - 1 {
        if digits[i] > digits[i + 1] {
            break
        }
        i += 1
    }
    if i == digits.count - 1 {
        return -1
    }
    var j = digits.count - 1
    while j > i {
        if digits[j] < digits[i] {
            break
        }
        j -= 1
    }
    var temp = digits[i]
    digits[i] = digits[j]
    digits[j] = temp
    j = digits.count - 1
    while i < j {
        temp = digits[i]
        digits[i] = digits[j]
        digits[j] = temp
        i += 1
        j -= 1
    }
    var result = 0
    for digit in digits {
        result = result * 10 + digit
    }
    return result
}

// Given a positive integer, return the next larger number that has the same
// number of digits and the same set of digits.
// nextBiggerNumber(12345) == 12543
func nextBiggerNumber(number: Int) -> Int {
    var number = number
    var digits = [Int]()
    while number > 0 {
        digits.append(number % 10)
        number /= 10
    }
    digits.reverse()
    var i = 0
    while i < digits.count - 1 {
        if digits[i] < digits[i + 1] {
            break
        }
        i += 1
    }
    if i == digits.count - 1 {
        return -1
    }
    var j = digits.count - 1
    while j > i {
        if digits[j] > digits[i] {
            break
        }
        j -= 1
    }
    var temp = digits[i]
    digits[i] = digits[j]
    digits[j] = temp
    j = digits.count - 1
    while i < j {
        temp = digits[i]
        digits[i] = digits[j]
        digits[j] = temp
        i += 1
        j -= 1
    }
    var result = 

func truncateNumber(number: Double) -> Double {
    return number - floor(number)
}

func sumDigits(number: Int) -> Int {
    return String(number).reduce(0) { $0 + Int(String($1))! }
}
```swift
// Given a positive floating point number, it can be decomposed into
// and integer part (largest integer smaller than given number) and decimals
// (leftover part always smaller than 1).
// Return the decimal part of the number.
// truncateNumber(number: 3.5) == 0.5
func truncateNumber(number: Double) -> Double {
    return number - floor(number)
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0) { $0 + Int(String($1))! }
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0) { $0 + Int(String($1))! }
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0) { $0 + Int(String($1))! }
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0) { $0 + Int(String($1))! }
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0) { $0 + Int(String($1))! }
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0) { $0 + Int(String($1))! }
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0) { $0 + Int(String($1))! }
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0) { $0 + Int(String($1))! }
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0) { $0 + Int(String($1))! }
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0) { $0 + Int(String($1))! }
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0) { $0 + Int(String($1))! }
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0) { $0 + Int(String($1))! }
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0) { $0 + Int(String($1))! }
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0) { $0 + Int(String($1))! }
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0) { $0 + Int(String($1))! }
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    return String(number).reduce(0) { $0 + Int(String($1))! }
}

// Given a positive

func truncateNumber(number: Double) -> Double {
    return number.truncatingRemainder(dividingBy: 1)
}

func factorial(n: Int) -> Int {
    if n == 0 {
        return 1
    }
    return n * factorial(n: n - 1)
}

func binary(n: Int) -> String {
    if n == 0 {
        return "0"
    }
    if n == 1 {
        return "1"
    }
    return binary(n: n / 2) + String(n % 2)
}

func octal(n: Int) -> String {
    if n == 0 {
        return "0"
    }
    if n == 1 {
        return "1"
    }
    return octal(n: n / 8) + String(n % 8)
}

func hexadecimal(n: Int) -> String {
    if n == 0 {
        return "0"
    }
    if n == 1 {
        return "1"
    }
    if n == 2 {
        return "2"
    }
    if n == 3 {
        return "3"
    }
    if n == 4 {
        return "4"
    }
    if n == 5 {
        return "5"
    }
    if n == 6 {
        return "6"
    }
    if n == 7 {
        return "7"
    }
    if n == 8 {
        return "8"
    }
    if n == 9 {
        return "9"
    }
    if n == 10 {
        return "A"
    }
    if n == 11 {
        return "B"
    }
    if n == 12 {
        return "C"
    }
    if n == 13 {
        return "D"
    }
    if n == 14 {
        return "E"
    }
    if n == 15 {
        return "F"
    }
    return hexadecimal(n: n / 16) + String(n % 16)
}

func base2(n: Int) -> String {
    if n == 0 {
        return "0"
    }
    if n == 1 {
        return "1"
    }
    return base2(n: n / 2) + String(n % 2)
}

func base8(n: Int) -> String {
    if n == 0 {
        return "0"
    }
    if n == 1 {
        return "1"
    }
    if n == 2 {
        return "2"
    }
    if n == 3 {
        return "3"
    }
    if n == 4 {
        return "4"
    }
    if n == 5 {
        return "5"
    }
    if n == 6 {
        return "6"
    }
    if n == 7 {
        return "7"
    }
    return base8(n: n / 8) + String(n % 8)
}
```swift
// Given a positive floating point number, it can be decomposed into
// and integer part (largest integer smaller than given number) and decimals
// (leftover part always smaller than 1).
// Return the decimal part of the number.
// truncateNumber(number: 3.5) == 0.5
func truncateNumber(number: Double) -> Double {
    return number.truncatingRemainder(dividingBy: 1)
}

// Given a positive integer, return its factorial.
// factorial(5) == 120
func factorial(n: Int) -> Int {
    if n == 0 {
        return 1
    }
    return n * factorial(n: n - 1)
}

// Given a positive integer, return its binary representation.
// binary(5) == "101"
func binary(n: Int) -> String {
    if n == 0 {
        return "0"
    }
    if n == 1 {
        return "1"
    }
    return binary(n: n / 2) + String(n % 2)
}

// Given a positive integer, return its octal representation.
// octal(5) == "13"
func octal(n: Int) -> String {
    if n == 0 {
        return "0"
    }
    if n == 1 {
        return "1"
    }
    return octal(n: n / 8) + String(n % 8)
}

// Given a positive integer, return its hexadecimal representation.
// hexadecimal(5) == "5"
func hexadecimal(n: Int) -> String {
    if n == 0 {
        return "0"
    }
    if n == 1 {
        return "1"
    }
    if n == 2 {
        return "2"
    }
    if n == 3 {
        return "3"
    }
    if n == 4 {
        return "4"
    }
    if n == 5 {
        return "5"
    }
    if n == 6 {
        return "6"
    }
    if n == 7 {
        return "7"
    }
    if n == 8 {
        return "8"
    }
    if n == 9 {
        return "9"
    }
    if n == 10 {
        return "A"
    }
    if n == 11 {
        return "B"
    }
    if n == 12 {
        return "C"
    }
    if n == 13 {
        return "D"
    }
    if n == 14 {
        return "E"
    }
    if n == 15 {
        return "F"
    }
    return hexadecimal(n: n / 16) + String(n % 16)
}

// Given a positive integer, return its base-2 representation.
// base2(5) == "101"
func base2(n: Int) -> String {
    if n == 0 {
        return "0"
    }
    if n == 1 {
        return "1"
    }
    return base2(n: n / 2) + String(n % 2)
}

// Given a positive integer, return its base-8 representation.
// base8(5) == "7"
func base8(n: Int) -> String {
    if n == 0 {
        return "0"
    }
    if n == 1 {
        return "1"
    }
    if n == 2 {
        return "2"
    }
    if n == 3 {
        return "3"
    }
    if n == 4 {
        return "4"
    }
    if n == 5 {
        return "5"
    }
    if n == 6 {
        return "6"
    }
    if n == 7 {
        return "7"
    }
    return base8(n: n / 8) + String(n % 8)
}

// Given a positive integer, return its base-16 representation.
// base16(5) == "5"
func base16(n: Int) -> String {
    if n == 0 {
        return "0"
    }
    if n == 1 {
        return "1"
    }
    if n == 2 {
        return "2"
    }
    if n == 3 {
        return "3"
    }
    if n == 4 {
        return "4"
    }
    if

func truncateNumber(number: Double) -> Double {
    return number - Double(Int(number))
}
```swift
// Given a positive floating point number, it can be decomposed into
// and integer part (largest integer smaller than given number) and decimals
// (leftover part always smaller than 1).
// Return the decimal part of the number.
// truncateNumber(number: 3.5) == 0.5
func truncateNumber(number: Double) -> Double {
    return number - Double(Int(number))
}
<|file_separator|>

func truncateNumber(number: Double) -> Double {
    return number - floor(number)
}

func sumDigits(number: Int) -> Int {
    var sum = 0
    var num = number
    while num > 0 {
        sum += num % 10
        num /= 10
    }
    return sum
}
```swift
// Given a positive floating point number, it can be decomposed into
// and integer part (largest integer smaller than given number) and decimals
// (leftover part always smaller than 1).
// Return the decimal part of the number.
// truncateNumber(number: 3.5) == 0.5
func truncateNumber(number: Double) -> Double {
    return number - floor(number)
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    var sum = 0
    var num = number
    while num > 0 {
        sum += num % 10
        num /= 10
    }
    return sum
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    var sum = 0
    var num = number
    while num > 0 {
        sum += num % 10
        num /= 10
    }
    return sum
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    var sum = 0
    var num = number
    while num > 0 {
        sum += num % 10
        num /= 10
    }
    return sum
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    var sum = 0
    var num = number
    while num > 0 {
        sum += num % 10
        num /= 10
    }
    return sum
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    var sum = 0
    var num = number
    while num > 0 {
        sum += num % 10
        num /= 10
    }
    return sum
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    var sum = 0
    var num = number
    while num > 0 {
        sum += num % 10
        num /= 10
    }
    return sum
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    var sum = 0
    var num = number
    while num > 0 {
        sum += num % 10
        num /= 10
    }
    return sum
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    var sum = 0
    var num = number
    while num > 0 {
        sum += num % 10
        num /= 10
    }
    return sum
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    var sum = 0
    var num = number
    while num > 0 {
        sum += num % 10
        num /= 10
    }
    return sum
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    var sum = 0
    var num = number
    while num > 0 {
        sum += num % 10
        num /= 10
    }
    return sum
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    var sum = 0
    var num = number
    while num > 0 {
        sum += num % 10
        num /= 10
    }
    return sum
}

// Given a positive integer, return the sum of its digits.
// sumDigits(123) == 6
func sumDigits(number: Int) -> Int {
    var sum = 0
    var num = number
    while num > 0 {
        sum += num % 10
        num /= 10
    }
    return sum
}

// Given a positive

func truncateNumber(number: Double) -> Double {
    return number - Double(Int(number))
}

func trailingZeros(number: Int) -> Int {
    var count = 0
    var num = number
    while num >= 5 {
        count += num / 5
        num /= 5
    }
    return count
}
```swift
// Given a positive floating point number, it can be decomposed into
// and integer part (largest integer smaller than given number) and decimals
// (leftover part always smaller than 1).
// Return the decimal part of the number.
// truncateNumber(number: 3.5) == 0.5
func truncateNumber(number: Double) -> Double {
    return number - Double(Int(number))
}

// Given a positive integer, return the number of trailing zeros in the factorial
// of that number.
// For example, 20! = 2432902008176640000, so the number of trailing zeros is 4.
// For the number 5, the number of trailing zeros is 1.
// Hint: Think of integer division.
// trailingZeros(5) == 1
func trailingZeros(number: Int) -> Int {
    var count = 0
    var num = number
    while num >= 5 {
        count += num / 5
        num /= 5
    }
    return count
}

// Given a positive integer, return the number of trailing zeros in the factorial
// of that number.
// For example, 20! = 2432902008176640000, so the number of trailing zeros is 4.
// For the number 5, the number of trailing zeros is 1.
// Hint: Think of integer division.
// trailingZeros(5) == 1
func trailingZeros(number: Int) -> Int {
    var count = 0
    var num = number
    while num >= 5 {
        count += num / 5
        num /= 5
    }
    return count
}

// Given a positive integer, return the number of trailing zeros in the factorial
// of that number.
// For example, 20! = 2432902008176640000, so the number of trailing zeros is 4.
// For the number 5, the number of trailing zeros is 1.
// Hint: Think of integer division.
// trailingZeros(5) == 1
func trailingZeros(number: Int) -> Int {
    var count = 0
    var num = number
    while num >= 5 {
        count += num / 5
        num /= 5
    }
    return count
}

// Given a positive integer, return the number of trailing zeros in the factorial
// of that number.
// For example, 20! = 2432902008176640000, so the number of trailing zeros is 4.
// For the number 5, the number of trailing zeros is 1.
// Hint: Think of integer division.
// trailingZeros(5) == 1
func trailingZeros(number: Int) -> Int {
    var count = 0
    var num = number
    while num >= 5 {
        count += num / 5
        num /= 5
    }
    return count
}

// Given a positive integer, return the number of trailing zeros in the factorial
// of that number.
// For example, 20! = 2432902008176640000, so the number of trailing zeros is 4.
// For the number 5, the number of trailing zeros is 1.
// Hint: Think of integer division.
// trailingZeros(5) == 1
func trailingZeros(number: Int) -> Int {
    var count = 0
    var num = number
    while num >= 5 {
        count += num / 5
        num /= 5
    }
    return count
}

// Given a positive integer, return the number of trailing zeros in the factorial
// of that number.
// For example, 20! = 2432902008176640000, so the number of trailing zeros is 4.
// For the number 5, the number of trailing zeros is 1.
// Hint: Think of integer division.
// trailingZeros(5) == 1
func trailingZeros(number: Int) -> Int {
    var count = 0
    var num = number
    while num >= 5 {
        count += num / 5
        num /= 5
    }
    return count
}

// Given a positive integer, return the number of trailing zeros in the factorial
// of that number.
// For example, 20! = 2432902008176640000, so the number of trailing zeros is 4.
// For the number 5, the number of trailing zeros is 1.

func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for operation in operations {
        balance += operation
        if balance < 0 {
            return true
        }
    }
    return false
}
```swift
// You're given an array of deposit and withdrawal operations on a bank account that starts with
// zero balance. Your task is to detect if at any point the balance of account fallls below zero, and
// at that point function should return true. Otherwise it should return false.
// belowZero(operations: [1, 2, 3]) == false
// belowZero(operations: [1, 2, -4, 5]) == true
func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for operation in operations {
        balance += operation
        if balance < 0 {
            return true
        }
    }
    return false
}
<|file_separator|>

func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for operation in operations {
        balance += operation
        if balance < 0 {
            return true
        }
    }
    return false
}
```swift
// You're given an array of deposit and withdrawal operations on a bank account that starts with
// zero balance. Your task is to detect if at any point the balance of account fallls below zero, and
// at that point function should return true. Otherwise it should return false.
// belowZero(operations: [1, 2, 3]) == false
// belowZero(operations: [1, 2, -4, 5]) == true
func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for operation in operations {
        balance += operation
        if balance < 0 {
            return true
        }
    }
    return false
}
<|file_separator|>

func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for operation in operations {
        balance += operation
        if balance < 0 {
            return true
        }
    }
    return false
}
```swift
// You're given an array of deposit and withdrawal operations on a bank account that starts with
// zero balance. Your task is to detect if at any point the balance of account fallls below zero, and
// at that point function should return true. Otherwise it should return false.
// belowZero(operations: [1, 2, 3]) == false
// belowZero(operations: [1, 2, -4, 5]) == true
func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for operation in operations {
        balance += operation
        if balance < 0 {
            return true
        }
    }
    return false
}
<|file_separator|>

func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for operation in operations {
        balance += operation
        if balance < 0 {
            return true
        }
    }
    return false
}
```swift
// You're given an array of deposit and withdrawal operations on a bank account that starts with
// zero balance. Your task is to detect if at any point the balance of account fallls below zero, and
// at that point function should return true. Otherwise it should return false.
// belowZero(operations: [1, 2, 3]) == false
// belowZero(operations: [1, 2, -4, 5]) == true
func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for operation in operations {
        balance += operation
        if balance < 0 {
            return true
        }
    }
    return false
}
<|file_separator|>

func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for operation in operations {
        balance += operation
        if balance < 0 {
            return true
        }
    }
    return false
}
```swift
// You're given an array of deposit and withdrawal operations on a bank account that starts with
// zero balance. Your task is to detect if at any point the balance of account fallls below zero, and
// at that point function should return true. Otherwise it should return false.
// belowZero(operations: [1, 2, 3]) == false
// belowZero(operations: [1, 2, -4, 5]) == true
func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for operation in operations {
        balance += operation
        if balance < 0 {
            return true
        }
    }
    return false
}
<|file_separator|>

func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for operation in operations {
        balance += operation
        if balance < 0 {
            return true
        }
    }
    return false
}
```swift
// You're given an array of deposit and withdrawal operations on a bank account that starts with
// zero balance. Your task is to detect if at any point the balance of account fallls below zero, and
// at that point function should return true. Otherwise it should return false.
// belowZero(operations: [1, 2, 3]) == false
// belowZero(operations: [1, 2, -4, 5]) == true
func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for operation in operations {
        balance += operation
        if balance < 0 {
            return true
        }
    }
    return false
}
<|file_separator|>

func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for operation in operations {
        balance += operation
        if balance < 0 {
            return true
        }
    }
    return false
}
```swift
// You're given an array of deposit and withdrawal operations on a bank account that starts with
// zero balance. Your task is to detect if at any point the balance of account fallls below zero, and
// at that point function should return true. Otherwise it should return false.
// belowZero(operations: [1, 2, 3]) == false
// belowZero(operations: [1, 2, -4, 5]) == true
func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for operation in operations {
        balance += operation
        if balance < 0 {
            return true
        }
    }
    return false
}
<|file_separator|>

func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for operation in operations {
        balance += operation
        if balance < 0 {
            return true
        }
    }
    return false
}
```swift
// You're given an array of deposit and withdrawal operations on a bank account that starts with
// zero balance. Your task is to detect if at any point the balance of account fallls below zero, and
// at that point function should return true. Otherwise it should return false.
// belowZero(operations: [1, 2, 3]) == false
// belowZero(operations: [1, 2, -4, 5]) == true
func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for operation in operations {
        balance += operation
        if balance < 0 {
            return true
        }
    }
    return false
}
<|file_separator|>

func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for operation in operations {
        balance += operation
        if balance < 0 {
            return true
        }
    }
    return false
}
```swift
// You're given an array of deposit and withdrawal operations on a bank account that starts with
// zero balance. Your task is to detect if at any point the balance of account fallls below zero, and
// at that point function should return true. Otherwise it should return false.
// belowZero(operations: [1, 2, 3]) == false
// belowZero(operations: [1, 2, -4, 5]) == true
func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for operation in operations {
        balance += operation
        if balance < 0 {
            return true
        }
    }
    return false
}
<|file_separator|>

func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for i in 0..<operations.count {
        balance += operations[i]
        if balance < 0 {
            return true
        }
    }
    return false
}
```swift
// You're given an array of deposit and withdrawal operations on a bank account that starts with
// zero balance. Your task is to detect if at any point the balance of account fallls below zero, and
// at that point function should return true. Otherwise it should return false.
// belowZero(operations: [1, 2, 3]) == false
// belowZero(operations: [1, 2, -4, 5]) == true
func belowZero(operations: [Int]) -> Bool {
    var balance = 0
    for i in 0..<operations.count {
        balance += operations[i]
        if balance < 0 {
            return true
        }
    }
    return false
}
<|file_separator|>

func meanAbsoluteDeviation(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}

func median(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return (sorted[count / 2 - 1] + sorted[count / 2]) / 2.0
    } else {
        return sorted[count / 2]
    }
}

func mode(numbers: [Double]) -> Double {
    let counts = numbers.reduce(into: [:]) { counts, number in
        counts[number, default: 0] += 1
    }
    return counts.max(by: { $0.value < $1.value })!.key
}

func range(numbers: [Double]) -> Double {
    return numbers.max()! - numbers.min()!
}

func variance(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { pow($0 - mean, 2) }.reduce(0, +) / Double(numbers.count)
}

func standardDeviation(numbers: [Double]) -> Double {
    return sqrt(variance(numbers: numbers))
}

func quartiles(numbers: [Double]) -> [Double] {
    let sorted = numbers.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return [
            (sorted[count / 2 - 1] + sorted[count / 2]) / 2.0,
            (sorted[count / 2] + sorted[count / 2 + 1]) / 2.0
        ]
    } else {
        return [sorted[count / 2]]
    }
}

func interquartileRange(numbers: [Double]) -> Double {
    return quartiles(numbers: numbers).last! - quartiles(numbers: numbers).first!
}

func firstQuartile(numbers: [Double]) -> Double {
    return quartiles(numbers: numbers).first!
}
```swift
// For a given array of input numbers, calculate Mean Absolute Deviation
// around the mean of this dataset.
// Mean Absolute Deviation is the average absolute difference between each
// element and a centerpoint (mean in this case):
// MAD = average | x - x_mean |
// meanAbsoluteDeviation(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func meanAbsoluteDeviation(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}

// For a given array of input numbers, calculate the median of this dataset.
// Median is the value separating the higher half of a data sample from the
// lower half.
// median(numbers: [1.0, 2.0, 3.0, 4.0]) == 2.5
func median(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return (sorted[count / 2 - 1] + sorted[count / 2]) / 2.0
    } else {
        return sorted[count / 2]
    }
}

// For a given array of input numbers, calculate the mode of this dataset.
// Mode is the value that appears most often in a data sample.
// mode(numbers: [1.0, 2.0, 3.0, 4.0]) == 2.0
func mode(numbers: [Double]) -> Double {
    let counts = numbers.reduce(into: [:]) { counts, number in
        counts[number, default: 0] += 1
    }
    return counts.max(by: { $0.value < $1.value })!.key
}

// For a given array of input numbers, calculate the range of this dataset.
// Range is the difference between the highest and lowest values in a data sample.
// range(numbers: [1.0, 2.0, 3.0, 4.0]) == 3.0
func range(numbers: [Double]) -> Double {
    return numbers.max()! - numbers.min()!
}

// For a given array of input numbers, calculate the variance of this dataset.
// Variance is the average of the squared differences between each element
// and the mean of the dataset.
// variance(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func variance(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { pow($0 - mean, 2) }.reduce(0, +) / Double(numbers.count)
}

// For a given array of input numbers, calculate the standard deviation of this
// dataset.
// standardDeviation(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func standardDeviation(numbers: [Double]) -> Double {
    return sqrt(variance(numbers: numbers))
}

// For a given array of input numbers, calculate the quartiles of this dataset.
// Quartile is the value separating the higher half of a data sample from the
// lower half.
// quartiles(numbers: [1.0, 2.0, 3.0, 4.0]) == [1.0, 2.5, 3.0]
func quartiles(numbers: [Double]) -> [Double] {
    let sorted = numbers.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return [
            (sorted[count / 2 - 1] + sorted[count / 2]) / 2.0,
            (sorted[count / 2] + sorted[count / 2 + 1]) / 2.0
        ]
    } else {
        return [sorted[count / 2]]
    }
}

// For a given array of input numbers, calculate the interquartile range of this
// dataset.
// interquartileRange(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func interquartileRange(numbers: [Double]) -> Double {
    return quartiles(numbers: numbers).last! - quartiles(numbers: numbers).first!
}

// For a given array of input numbers, calculate the first quartile of this
// dataset.
// firstQuartile(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func firstQuartile(numbers: [Double]) -> Double {
    return quartiles(numbers: numbers).first!
}

func meanAbsoluteDeviation(numbers: [Double]) -> Double {
  let mean = numbers.reduce(0, +) / Double(numbers.count)
  return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}
```swift
// For a given array of input numbers, calculate Mean Absolute Deviation
// around the mean of this dataset.
// Mean Absolute Deviation is the average absolute difference between each
// element and a centerpoint (mean in this case):
// MAD = average | x - x_mean |
// meanAbsoluteDeviation(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func meanAbsoluteDeviation(numbers: [Double]) -> Double {
  let mean = numbers.reduce(0, +) / Double(numbers.count)
  return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}
<|file_separator|>

func meanAbsoluteDeviation(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}

func meanStandardDeviation(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return sqrt(numbers.map { pow($0 - mean, 2) }.reduce(0, +) / Double(numbers.count))
}

func meanVariance(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { pow($0 - mean, 2) }.reduce(0, +) / Double(numbers.count)
}

func median(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    let middle = sorted.count / 2
    return sorted.count % 2 == 0 ? (sorted[middle - 1] + sorted[middle]) / 2 : sorted[middle]
}

func mode(numbers: [Double]) -> Double {
    let counts = numbers.reduce(into: [:]) { counts, num in
        counts[num, default: 0] += 1
    }
    return counts.max(by: { $0.value < $1.value })!.key
}

func range(numbers: [Double]) -> Double {
    return numbers.max()! - numbers.min()!
}

func quartiles(numbers: [Double]) -> [Double] {
    let sorted = numbers.sorted()
    let middle = sorted.count / 2
    return [
        sorted[middle - 1],
        sorted[middle],
        sorted.count % 2 == 0 ? (sorted[middle - 1] + sorted[middle]) / 2 : sorted[middle]
    ]
}

func interquartileRange(numbers: [Double]) -> Double {
    return quartiles(numbers: numbers).last! - quartiles(numbers: numbers).first!
}
```swift
// For a given array of input numbers, calculate Mean Absolute Deviation
// around the mean of this dataset.
// Mean Absolute Deviation is the average absolute difference between each
// element and a centerpoint (mean in this case):
// MAD = average | x - x_mean |
// meanAbsoluteDeviation(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func meanAbsoluteDeviation(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}

// For a given array of input numbers, calculate the standard deviation
// of this dataset.
// Standard Deviation is the square root of the average of the squared
// differences between each element and a centerpoint (mean in this case):
// SD = sqrt(average | x - x_mean |]
// meanStandardDeviation(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func meanStandardDeviation(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return sqrt(numbers.map { pow($0 - mean, 2) }.reduce(0, +) / Double(numbers.count))
}

// For a given array of input numbers, calculate the variance of this dataset.
// Variance is the average of the squared differences between each element
// and a centerpoint (mean in this case):
// VAR = average | x - x_mean |]^2
// meanVariance(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func meanVariance(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { pow($0 - mean, 2) }.reduce(0, +) / Double(numbers.count)
}

// For a given array of input numbers, calculate the median of this dataset.
// Median is the value separating the higher half from the lower half of a
// dataset.
// median(numbers: [1.0, 2.0, 3.0, 4.0]) == 2.5
func median(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    let middle = sorted.count / 2
    return sorted.count % 2 == 0 ? (sorted[middle - 1] + sorted[middle]) / 2 : sorted[middle]
}

// For a given array of input numbers, calculate the mode of this dataset.
// Mode is the most frequently occurring value in a dataset.
// mode(numbers: [1.0, 2.0, 3.0, 4.0]) == 2.0
func mode(numbers: [Double]) -> Double {
    let counts = numbers.reduce(into: [:]) { counts, num in
        counts[num, default: 0] += 1
    }
    return counts.max(by: { $0.value < $1.value })!.key
}

// For a given array of input numbers, calculate the range of this dataset.
// Range is the difference between the highest and lowest values in a dataset.
// range(numbers: [1.0, 2.0, 3.0, 4.0]) == 3.0
func range(numbers: [Double]) -> Double {
    return numbers.max()! - numbers.min()!
}

// For a given array of input numbers, calculate the quartiles of this dataset.
// Quartile is the value separating the higher half from the lower half of a
// dataset.
// quartiles(numbers: [1.0, 2.0, 3.0, 4.0]) == [1.5, 3.0, 4.5]
func quartiles(numbers: [Double]) -> [Double] {
    let sorted = numbers.sorted()
    let middle = sorted.count / 2
    return [
        sorted[middle - 1],
        sorted[middle],
        sorted.count % 2 == 0 ? (sorted[middle - 1] + sorted[middle]) / 2 : sorted[middle]
    ]
}

// For a given array of input numbers, calculate the interquartile range of this dataset.
// Interquartile range is the difference between the quartiles of a dataset.
// interquartileRange(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func interquartileRange(numbers: [Double]) -> Double {
    return quartiles(numbers: numbers).last! - quartiles(numbers: numbers).first!
}

// For a given array of input numbers, calculate the first quartile of this dataset

func meanAbsoluteDeviation(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}

func median(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return (sorted[count / 2 - 1] + sorted[count / 2]) / 2
    } else {
        return sorted[count / 2]
    }
}

func mode(numbers: [Double]) -> Double {
    let counts = numbers.reduce(into: [:]) { counts, num in
        counts[num, default: 0] += 1
    }
    return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key
}

func mode(numbers: [Int]) -> Int {
    let counts = numbers.reduce(into: [:]) { counts, num in
        counts[num, default: 0] += 1
    }
    return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key
}

func mode(numbers: [Float]) -> Float {
    let counts = numbers.reduce(into: [:]) { counts, num in
        counts[num, default: 0] += 1
    }
    return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key
}
```swift
// For a given array of input numbers, calculate Mean Absolute Deviation
// around the mean of this dataset.
// Mean Absolute Deviation is the average absolute difference between each
// element and a centerpoint (mean in this case):
// MAD = average | x - x_mean |
// meanAbsoluteDeviation(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func meanAbsoluteDeviation(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}

// For a given array of input numbers, calculate the median of this dataset.
// Median is the value separating the higher half of a data sample from the lower
// half.
// median(numbers: [1.0, 2.0, 3.0, 4.0]) == 2.5
func median(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return (sorted[count / 2 - 1] + sorted[count / 2]) / 2
    } else {
        return sorted[count / 2]
    }
}

// For a given array of input numbers, calculate the mode of this dataset.
// Mode is the value that appears most often.
// mode(numbers: [1.0, 2.0, 3.0, 4.0]) == 2.0
func mode(numbers: [Double]) -> Double {
    let counts = numbers.reduce(into: [:]) { counts, num in
        counts[num, default: 0] += 1
    }
    return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key
}

// For a given array of input numbers, calculate the mode of this dataset.
// Mode is the value that appears most often.
// mode(numbers: [1.0, 2.0, 3.0, 4.0]) == 2.0
func mode(numbers: [Int]) -> Int {
    let counts = numbers.reduce(into: [:]) { counts, num in
        counts[num, default: 0] += 1
    }
    return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key
}

// For a given array of input numbers, calculate the mode of this dataset.
// Mode is the value that appears most often.
// mode(numbers: [1.0, 2.0, 3.0, 4.0]) == 2.0
func mode(numbers: [Float]) -> Float {
    let counts = numbers.reduce(into: [:]) { counts, num in
        counts[num, default: 0] += 1
    }
    return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key
}

// For a given array of input numbers, calculate the mode of this dataset.
// Mode is the value that appears most often.
// mode(numbers: [1.0, 2.0, 3.0, 4.0]) == 2.0
func mode(numbers: [Double]) -> Double {
    let counts = numbers.reduce(into: [:]) { counts, num in
        counts[num, default: 0] += 1
    }
    return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key
}

// For a given array of input numbers, calculate the mode of this dataset.
// Mode is the value that appears most often.
// mode(numbers: [1.0, 2.0, 3.0, 4.0]) == 2.0
func mode(numbers: [Int]) -> Int {
    let counts = numbers.reduce(into: [:]) { counts, num in
        counts[num, default: 0] += 1
    }
    return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key
}

// For a given array of input numbers, calculate the mode of this dataset.
// Mode is the value that appears most often.
// mode(numbers: [1.0, 2.0, 3.0, 4.0]) == 2.0
func mode(numbers: [Float]) -> Float {
    let counts = numbers.reduce(into: [:]) { counts, num in
        counts[num, default: 0] += 1
    }
    return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key
}

// For a given array of input numbers, calculate the mode of this dataset.
// Mode is the value
return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key // consecutive statements on a line must be separated by ';'
return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key // contextual closure type '(Dictionary<Double, Int>.Element, Dictionary<Double, Int>.Element) throws -> Bool' (aka '((key: Double, value: Int), (key: Double, value: Int)) throws -> Bool') expects 2 arguments, but 1 was used in closure body
return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key // cannot convert value of type 'Int' to closure result type 'Bool'
return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key // cannot convert value of type 'Dictionary<Double, Int>.Element' (aka '(key: Double, value: Int)') to expected argument type 'Double'
return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key // expected expression
return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key // consecutive statements on a line must be separated by ';'
return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key // expected expression
return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key // contextual closure type '(Dictionary<Int, Int>.Element, Dictionary<Int, Int>.Element) throws -> Bool' (aka '((key: Int, value: Int), (key: Int, value: Int)) throws -> Bool') expects 2 arguments, but 1 was used in closure body
return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key // cannot convert value of type 'Int' to closure result type 'Bool'
return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key // cannot convert value of type 'Dictionary<Int, Int>.Element' (aka '(key: Int, value: Int)') to expected argument type 'Int'
return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key // cannot convert value of type 'Int' to closure result type 'Bool'
return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key // consecutive statements on a line must be separated by ';'
return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key // contextual closure type '(Dictionary<Float, Int>.Element, Dictionary<Float, Int>.Element) throws -> Bool' (aka '((key: Float, value: Int), (key: Float, value: Int)) throws -> Bool') expects 2 arguments, but 1 was used in closure body
return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key // cannot convert value of type 'Dictionary<Float, Int>.Element' (aka '(key: Float, value: Int)') to expected argument type 'Float'
return counts.max { counts[$0] ?? 0, counts[$1] ?? 0 }!.key // expected expression

func meanAbsoluteDeviation(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}

func median(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return (sorted[count / 2 - 1] + sorted[count / 2]) / 2
    } else {
        return sorted[count / 2]
    }
}

func mode(numbers: [Double]) -> Double {
    let count = numbers.reduce(into: [:]) { counts, num in
        counts[num, default: 0] += 1
    }
    return count.max(by: { $0.value < $1.value })!.key
}

func range(numbers: [Double]) -> Double {
    return numbers.max()! - numbers.min()!
}

func variance(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { pow($0 - mean, 2) }.reduce(0, +) / Double(numbers.count)
}

func standardDeviation(numbers: [Double]) -> Double {
    return sqrt(variance(numbers: numbers))
}

func quartiles(numbers: [Double]) -> [Double] {
    let sorted = numbers.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return [
            (sorted[count / 2 - 1] + sorted[count / 2]) / 2,
            sorted[count / 2],
            (sorted[count / 2 + 1] + sorted[count / 2 + 2]) / 2
        ]
    } else {
        return [
            sorted[count / 2],
            sorted[count / 2 + 1]
        ]
    }
}
```swift
// For a given array of input numbers, calculate Mean Absolute Deviation
// around the mean of this dataset.
// Mean Absolute Deviation is the average absolute difference between each
// element and a centerpoint (mean in this case):
// MAD = average | x - x_mean |
// meanAbsoluteDeviation(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func meanAbsoluteDeviation(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}

// For a given array of input numbers, calculate the median of this dataset.
// Median is the value separating the higher half of a data sample from the
// lower half.
// median(numbers: [1.0, 2.0, 3.0, 4.0]) == 2.5
func median(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return (sorted[count / 2 - 1] + sorted[count / 2]) / 2
    } else {
        return sorted[count / 2]
    }
}

// For a given array of input numbers, calculate the mode of this dataset.
// Mode is the value that appears most often in the dataset.
// mode(numbers: [1.0, 2.0, 3.0, 4.0]) == 2.0
func mode(numbers: [Double]) -> Double {
    let count = numbers.reduce(into: [:]) { counts, num in
        counts[num, default: 0] += 1
    }
    return count.max(by: { $0.value < $1.value })!.key
}

// For a given array of input numbers, calculate the range of this dataset.
// Range is the difference between the highest and lowest values in the dataset.
// range(numbers: [1.0, 2.0, 3.0, 4.0]) == 3.0
func range(numbers: [Double]) -> Double {
    return numbers.max()! - numbers.min()!
}

// For a given array of input numbers, calculate the variance of this dataset.
// Variance is the average of the squared differences between each element
// and a centerpoint (mean in this case).
// variance(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func variance(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { pow($0 - mean, 2) }.reduce(0, +) / Double(numbers.count)
}

// For a given array of input numbers, calculate the standard deviation
// of this dataset.
// Standard deviation is the square root of the variance.
// standardDeviation(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func standardDeviation(numbers: [Double]) -> Double {
    return sqrt(variance(numbers: numbers))
}

// For a given array of input numbers, calculate the quartiles of this dataset.
// Quartile is the value separating the higher half of a data sample from the
// lower half.
// quartiles(numbers: [1.0, 2.0, 3.0, 4.0]) == [1.0, 2.5, 3.0]
func quartiles(numbers: [Double]) -> [Double] {
    let sorted = numbers.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return [
            (sorted[count / 2 - 1] + sorted[count / 2]) / 2,
            sorted[count / 2],
            (sorted[count / 2 + 1] + sorted[count / 2 + 2]) / 2
        ]
    } else {
        return [
            sorted[count / 2],
            sorted[count / 2 + 1]
        ]
    }
}

// For a given array of input numbers, calculate the quartiles of this dataset.
// Quartile is the value separating the higher half of a data sample from the
// lower half.
// quartiles(numbers: [1.0, 2.0, 3.0, 4.0]) == [1.0, 2.5, 3.0]
func quartiles(numbers: [Double]) -> [Double] {
    let sorted = numbers.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return [
            (sorted[count /

func meanAbsoluteDeviation(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}

func median(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return (sorted[count / 2 - 1] + sorted[count / 2]) / 2
    } else {
        return sorted[count / 2]
    }
}

func mode(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    var mode = sorted[0]
    var modeCount = 1
    var currentCount = 1
    for i in 1..<sorted.count {
        if sorted[i] == sorted[i - 1] {
            currentCount += 1
        } else {
            if currentCount > modeCount {
                mode = sorted[i - 1]
                modeCount = currentCount
            }
            currentCount = 1
        }
    }
    if currentCount > modeCount {
        mode = sorted[sorted.count - 1]
    }
    return mode
}

func range(numbers: [Double]) -> Double {
    return numbers.max()! - numbers.min()!
}

func variance(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { pow($0 - mean, 2) }.reduce(0, +) / Double(numbers.count)
}

func standardDeviation(numbers: [Double]) -> Double {
    return sqrt(variance(numbers: numbers))
}
```swift
// For a given array of input numbers, calculate Mean Absolute Deviation
// around the mean of this dataset.
// Mean Absolute Deviation is the average absolute difference between each
// element and a centerpoint (mean in this case):
// MAD = average | x - x_mean |
// meanAbsoluteDeviation(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func meanAbsoluteDeviation(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}

// For a given array of input numbers, calculate the median of this dataset.
// Median is the middle number of a sorted list of numbers.
// median(numbers: [1.0, 2.0, 3.0, 4.0]) == 2.5
func median(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return (sorted[count / 2 - 1] + sorted[count / 2]) / 2
    } else {
        return sorted[count / 2]
    }
}

// For a given array of input numbers, calculate the mode of this dataset.
// Mode is the number that appears most often in a list of numbers.
// mode(numbers: [1.0, 2.0, 3.0, 4.0]) == 2.0
// mode(numbers: [1.0, 2.0, 3.0, 4.0, 2.0]) == 2.0
func mode(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    var mode = sorted[0]
    var modeCount = 1
    var currentCount = 1
    for i in 1..<sorted.count {
        if sorted[i] == sorted[i - 1] {
            currentCount += 1
        } else {
            if currentCount > modeCount {
                mode = sorted[i - 1]
                modeCount = currentCount
            }
            currentCount = 1
        }
    }
    if currentCount > modeCount {
        mode = sorted[sorted.count - 1]
    }
    return mode
}

// For a given array of input numbers, calculate the range of this dataset.
// Range is the difference between the largest and smallest number in a list of numbers.
// range(numbers: [1.0, 2.0, 3.0, 4.0]) == 3.0
func range(numbers: [Double]) -> Double {
    return numbers.max()! - numbers.min()!
}

// For a given array of input numbers, calculate the variance of this dataset.
// Variance is the average of the squared differences between each element and the
// mean of this dataset.
// variance(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func variance(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { pow($0 - mean, 2) }.reduce(0, +) / Double(numbers.count)
}

// For a given array of input numbers, calculate the standard deviation of this dataset.
// Standard deviation is the square root of the variance of this dataset.
// standardDeviation(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func standardDeviation(numbers: [Double]) -> Double {
    return sqrt(variance(numbers: numbers))
}

// For a given array of input numbers, calculate the quartiles of this dataset.
// Quartile is the median of three numbers.
// quartiles(numbers: [1.0, 2.0, 3.0, 4.0]) == [1.5, 2.5, 3.5]
func quartiles(numbers: [Double]) -> [Double] {
    let sorted = numbers.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return [
            (sorted[count / 2 - 1] + sorted[count / 2]) / 2,
            median(numbers: sorted[count / 2 - 1..<count / 2 + 1]),
            (sorted[count / 2 + 1] + sorted[count / 2 + 2]) / 2
        ]
    } else {
        return [
            median(numbers: sorted[0..<count / 2 + 1]),
            median(numbers: sorted[count / 2 - 1..<count / 2 + 1]),

func meanAbsoluteDeviation(numbers: [Double]) -> Double {
  let mean = numbers.reduce(0, +) / Double(numbers.count)
  return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}

func median(numbers: [Double]) -> Double {
  let sorted = numbers.sorted()
  let count = sorted.count
  if count % 2 == 0 {
    return (sorted[count / 2 - 1] + sorted[count / 2]) / 2
  }
  return sorted[count / 2]
}

func mode(numbers: [Double]) -> Double {
  let counts = numbers.reduce(into: [:]) { counts, number in
    counts[number, default: 0] += 1
  }
  return counts.max(by: { $0.value < $1.value })!.key
}

func variance(numbers: [Double]) -> Double {
  let mean = numbers.reduce(0, +) / Double(numbers.count)
  return numbers.map { pow($0 - mean, 2) }.reduce(0, +) / Double(numbers.count)
}

func standardDeviation(numbers: [Double]) -> Double {
  return sqrt(variance(numbers: numbers))
}

func range(numbers: [Double]) -> Double {
  return numbers.max()! - numbers.min()!
}

func quartiles(numbers: [Double]) -> [Double] {
  let sorted = numbers.sorted()
  let count = sorted.count
  let quartileCount = count / 4
  return [
    sorted[quartileCount - 1],
    sorted[count / 2],
    sorted[count / 2 + quartileCount - 1]
  ]
}

func interquartileRange(numbers: [Double]) -> Double {
  return quartiles(numbers: numbers).last! - quartiles(numbers: numbers).first!
}

func firstQuartile(numbers: [Double]) -> Double {
  return quartiles(numbers: numbers).first!
}
```swift
// For a given array of input numbers, calculate Mean Absolute Deviation
// around the mean of this dataset.
// Mean Absolute Deviation is the average absolute difference between each
// element and a centerpoint (mean in this case):
// MAD = average | x - x_mean |
// meanAbsoluteDeviation(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func meanAbsoluteDeviation(numbers: [Double]) -> Double {
  let mean = numbers.reduce(0, +) / Double(numbers.count)
  return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}

// For a given array of input numbers, calculate the median of this dataset.
// Median is the middle value in a sorted list of numbers.
// median(numbers: [1.0, 2.0, 3.0, 4.0]) == 2.5
func median(numbers: [Double]) -> Double {
  let sorted = numbers.sorted()
  let count = sorted.count
  if count % 2 == 0 {
    return (sorted[count / 2 - 1] + sorted[count / 2]) / 2
  }
  return sorted[count / 2]
}

// For a given array of input numbers, calculate the mode of this dataset.
// Mode is the value that appears most often.
// mode(numbers: [1.0, 2.0, 3.0, 4.0]) == 2.0
func mode(numbers: [Double]) -> Double {
  let counts = numbers.reduce(into: [:]) { counts, number in
    counts[number, default: 0] += 1
  }
  return counts.max(by: { $0.value < $1.value })!.key
}

// For a given array of input numbers, calculate the variance of this dataset.
// Variance is the average of the squared differences between each element
// and the mean of the dataset.
// variance(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func variance(numbers: [Double]) -> Double {
  let mean = numbers.reduce(0, +) / Double(numbers.count)
  return numbers.map { pow($0 - mean, 2) }.reduce(0, +) / Double(numbers.count)
}

// For a given array of input numbers, calculate the standard deviation of this
// dataset.
// Standard deviation is the square root of the variance.
// standardDeviation(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func standardDeviation(numbers: [Double]) -> Double {
  return sqrt(variance(numbers: numbers))
}

// For a given array of input numbers, calculate the range of this dataset.
// Range is the difference between the highest and lowest values.
// range(numbers: [1.0, 2.0, 3.0, 4.0]) == 3.0
func range(numbers: [Double]) -> Double {
  return numbers.max()! - numbers.min()!
}

// For a given array of input numbers, calculate the quartiles of this dataset.
// Quartile is the value that is at the 25%, 50%, and 75% of the dataset.
// quartiles(numbers: [1.0, 2.0, 3.0, 4.0]) == [1.0, 2.5, 3.5]
func quartiles(numbers: [Double]) -> [Double] {
  let sorted = numbers.sorted()
  let count = sorted.count
  let quartileCount = count / 4
  return [
    sorted[quartileCount - 1],
    sorted[count / 2],
    sorted[count / 2 + quartileCount - 1]
  ]
}

// For a given array of input numbers, calculate the interquartile range of this
// dataset.
// Interquartile range is the difference between the 75th and 25th quartiles.
// interquartileRange(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func interquartileRange(numbers: [Double]) -> Double {
  return quartiles(numbers: numbers).last! - quartiles(numbers: numbers).first!
}

// For a given array of input numbers, calculate the first quartile of this
// dataset.
// First quartile is the value that is at the 25% of the dataset.
// firstQuartile(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func firstQuartile(numbers: [Double]) -> Double {
  return quartiles(numbers: numbers).first!
}

//

func meanAbsoluteDeviation(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}

func median(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return (sorted[count / 2 - 1] + sorted[count / 2]) / 2
    } else {
        return sorted[count / 2]
    }
}

func mode(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    let count = sorted.count
    var mode = sorted[0]
    var modeCount = 1
    var currentCount = 1
    for i in 1..<count {
        if sorted[i] == sorted[i - 1] {
            currentCount += 1
        } else {
            if currentCount > modeCount {
                mode = sorted[i - 1]
                modeCount = currentCount
            }
            currentCount = 1
        }
    }
    if currentCount > modeCount {
        mode = sorted[count - 1]
    }
    return mode
}

func range(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    return sorted[sorted.count - 1] - sorted[0]
}

func variance(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { pow($0 - mean, 2) }.reduce(0, +) / Double(numbers.count)
}

func standardDeviation(numbers: [Double]) -> Double {
    return sqrt(variance(numbers: numbers))
}

func quartiles(numbers: [Double]) -> [Double] {
    let sorted = numbers.sorted()
    let count = sorted.count
    let median = median(numbers: sorted)
    let q1 = median(numbers: Array(sorted[0..<count / 2]))
    let q3 = median(numbers: Array(sorted[(count + 1) / 2..<count]))
    return [q1, median, q3]
}

func interquartileRange(numbers: [Double]) -> Double {
    return quartiles(numbers: numbers)[2] - quartiles(numbers: numbers)[0]
}
```swift
// For a given array of input numbers, calculate Mean Absolute Deviation
// around the mean of this dataset.
// Mean Absolute Deviation is the average absolute difference between each
// element and a centerpoint (mean in this case):
// MAD = average | x - x_mean |
// meanAbsoluteDeviation(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func meanAbsoluteDeviation(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}

// For a given array of input numbers, calculate the median.
// Median is the middle value of a sorted array of numbers.
// median(numbers: [1.0, 2.0, 3.0, 4.0]) == 2.5
func median(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return (sorted[count / 2 - 1] + sorted[count / 2]) / 2
    } else {
        return sorted[count / 2]
    }
}

// For a given array of input numbers, calculate the mode.
// Mode is the most common value in a sorted array of numbers.
// mode(numbers: [1.0, 2.0, 3.0, 4.0]) == 2.0
func mode(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    let count = sorted.count
    var mode = sorted[0]
    var modeCount = 1
    var currentCount = 1
    for i in 1..<count {
        if sorted[i] == sorted[i - 1] {
            currentCount += 1
        } else {
            if currentCount > modeCount {
                mode = sorted[i - 1]
                modeCount = currentCount
            }
            currentCount = 1
        }
    }
    if currentCount > modeCount {
        mode = sorted[count - 1]
    }
    return mode
}

// For a given array of input numbers, calculate the range.
// Range is the difference between the highest and lowest values in a sorted array of numbers.
// range(numbers: [1.0, 2.0, 3.0, 4.0]) == 3.0
func range(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    return sorted[sorted.count - 1] - sorted[0]
}

// For a given array of input numbers, calculate the variance.
// Variance is the average of the squared differences between each element and the mean.
// variance(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func variance(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { pow($0 - mean, 2) }.reduce(0, +) / Double(numbers.count)
}

// For a given array of input numbers, calculate the standard deviation.
// Standard deviation is the square root of the variance.
// standardDeviation(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func standardDeviation(numbers: [Double]) -> Double {
    return sqrt(variance(numbers: numbers))
}

// For a given array of input numbers, calculate the quartiles.
// Quartile is the median of three values.
// quartiles(numbers: [1.0, 2.0, 3.0, 4.0]) == [1.5, 2.5, 3.5]
func quartiles(numbers: [Double]) -> [Double] {
    let sorted = numbers.sorted()
    let count = sorted.count
    let median = median(numbers: sorted)
    let q1 = median(numbers: Array(sorted[0..<count / 2]))
    let q3 = median(numbers: Array(sorted[(count + 1) / 2..<count]))
    return [q1, median, q3]
}

// For a given array of input numbers, calculate the interquartile range.
// Interquartile range is the difference between the third quartile and the first quartile.
// interquartileRange(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func interquartileRange(numbers: [Double]) -> Double {
    return quartiles(numbers: numbers)[2] - quartiles(numbers: numbers)[0]
}

// For a given array of input numbers, calculate the first quartile.
let q1 = median(numbers: Array(sorted[0..<count / 2])) // cannot call value of non-function type 'Double'
let q3 = median(numbers: Array(sorted[(count + 1) / 2..<count])) // cannot call value of non-function type 'Double'

func meanAbsoluteDeviation(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}
```swift
// For a given array of input numbers, calculate Mean Absolute Deviation
// around the mean of this dataset.
// Mean Absolute Deviation is the average absolute difference between each
// element and a centerpoint (mean in this case):
// MAD = average | x - x_mean |
// meanAbsoluteDeviation(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func meanAbsoluteDeviation(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}
<|file_separator|>

func meanAbsoluteDeviation(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}
```swift
// For a given array of input numbers, calculate Mean Absolute Deviation
// around the mean of this dataset.
// Mean Absolute Deviation is the average absolute difference between each
// element and a centerpoint (mean in this case):
// MAD = average | x - x_mean |
// meanAbsoluteDeviation(numbers: [1.0, 2.0, 3.0, 4.0]) == 1.0
func meanAbsoluteDeviation(numbers: [Double]) -> Double {
    let mean = numbers.reduce(0, +) / Double(numbers.count)
    return numbers.map { abs($0 - mean) }.reduce(0, +) / Double(numbers.count)
}
<|file_separator|>

func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for (index, number) in numbers.enumerated() {
        result.append(number)
        if index < numbers.count - 1 {
            result.append(delimeter)
        }
    }
    return result
}
```swift
// Insert a number 'delimeter' between every two consecutive elements of input array `numbers'
// intersperse(numbers: [] as [Int], delimeter: 4) == [] as [Int]
// intersperse(numbers: [1, 2, 3], delimeter: 4) == [1, 4, 2, 4, 3]
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for (index, number) in numbers.enumerated() {
        result.append(number)
        if index < numbers.count - 1 {
            result.append(delimeter)
        }
    }
    return result
}
<|file_separator|>

func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for (index, number) in numbers.enumerated() {
        result.append(number)
        if index < numbers.count - 1 {
            result.append(delimeter)
        }
    }
    return result
}
```swift
// Insert a number 'delimeter' between every two consecutive elements of input array `numbers'
// intersperse(numbers: [] as [Int], delimeter: 4) == [] as [Int]
// intersperse(numbers: [1, 2, 3], delimeter: 4) == [1, 4, 2, 4, 3]
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for (index, number) in numbers.enumerated() {
        result.append(number)
        if index < numbers.count - 1 {
            result.append(delimeter)
        }
    }
    return result
}
<|file_separator|>

func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for i in 0..<numbers.count {
        if i == 0 {
            result.append(numbers[i])
        } else {
            result.append(delimeter)
            result.append(numbers[i])
        }
    }
    return result
}
```swift
// Insert a number 'delimeter' between every two consecutive elements of input array `numbers'
// intersperse(numbers: [] as [Int], delimeter: 4) == [] as [Int]
// intersperse(numbers: [1, 2, 3], delimeter: 4) == [1, 4, 2, 4, 3]
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for i in 0..<numbers.count {
        if i == 0 {
            result.append(numbers[i])
        } else {
            result.append(delimeter)
            result.append(numbers[i])
        }
    }
    return result
}
<|file_separator|>

func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for (index, value) in numbers.enumerated() {
        result.append(value)
        if index < numbers.count - 1 {
            result.append(delimeter)
        }
    }
    return result
}
```swift
// Insert a number 'delimeter' between every two consecutive elements of input array `numbers'
// intersperse(numbers: [] as [Int], delimeter: 4) == [] as [Int]
// intersperse(numbers: [1, 2, 3], delimeter: 4) == [1, 4, 2, 4, 3]
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for (index, value) in numbers.enumerated() {
        result.append(value)
        if index < numbers.count - 1 {
            result.append(delimeter)
        }
    }
    return result
}
<|file_separator|>

func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for (index, number) in numbers.enumerated() {
        if index == 0 {
            result.append(number)
            continue
        }
        result.append(delimeter)
        result.append(number)
    }
    return result
}
```swift
// Insert a number 'delimeter' between every two consecutive elements of input array `numbers'
// intersperse(numbers: [] as [Int], delimeter: 4) == [] as [Int]
// intersperse(numbers: [1, 2, 3], delimeter: 4) == [1, 4, 2, 4, 3]
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for (index, number) in numbers.enumerated() {
        if index == 0 {
            result.append(number)
            continue
        }
        result.append(delimeter)
        result.append(number)
    }
    return result
}
<|file_separator|>

func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for i in 0..<numbers.count {
        if i == 0 {
            result.append(numbers[i])
        } else if i == numbers.count - 1 {
            result.append(numbers[i])
        } else {
            result.append(numbers[i])
            result.append(delimeter)
        }
    }
    return result
}
```swift
// Insert a number 'delimeter' between every two consecutive elements of input array `numbers'
// intersperse(numbers: [] as [Int], delimeter: 4) == [] as [Int]
// intersperse(numbers: [1, 2, 3], delimeter: 4) == [1, 4, 2, 4, 3]
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for i in 0..<numbers.count {
        if i == 0 {
            result.append(numbers[i])
        } else if i == numbers.count - 1 {
            result.append(numbers[i])
        } else {
            result.append(numbers[i])
            result.append(delimeter)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for (index, number) in numbers.enumerated() {
        result.append(number)
        if index < numbers.count - 1 {
            result.append(delimeter)
        }
    }
    return result
}
```swift
// Insert a number 'delimeter' between every two consecutive elements of input array `numbers'
// intersperse(numbers: [] as [Int], delimeter: 4) == [] as [Int]
// intersperse(numbers: [1, 2, 3], delimeter: 4) == [1, 4, 2, 4, 3]
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for (index, number) in numbers.enumerated() {
        result.append(number)
        if index < numbers.count - 1 {
            result.append(delimeter)
        }
    }
    return result
}
<|file_separator|>

func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for i in 0..<numbers.count {
        if i == 0 {
            result.append(numbers[i])
        } else {
            result.append(delimeter)
            result.append(numbers[i])
        }
    }
    return result
}
```swift
// Insert a number 'delimeter' between every two consecutive elements of input array `numbers'
// intersperse(numbers: [] as [Int], delimeter: 4) == [] as [Int]
// intersperse(numbers: [1, 2, 3], delimeter: 4) == [1, 4, 2, 4, 3]
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for i in 0..<numbers.count {
        if i == 0 {
            result.append(numbers[i])
        } else {
            result.append(delimeter)
            result.append(numbers[i])
        }
    }
    return result
}
<|file_separator|>

func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for (index, number) in numbers.enumerated() {
        result.append(number)
        if index < numbers.count - 1 {
            result.append(delimeter)
        }
    }
    return result
}
```swift
// Insert a number 'delimeter' between every two consecutive elements of input array `numbers'
// intersperse(numbers: [] as [Int], delimeter: 4) == [] as [Int]
// intersperse(numbers: [1, 2, 3], delimeter: 4) == [1, 4, 2, 4, 3]
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for (index, number) in numbers.enumerated() {
        result.append(number)
        if index < numbers.count - 1 {
            result.append(delimeter)
        }
    }
    return result
}
<|file_separator|>

func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for (index, number) in numbers.enumerated() {
        if index == 0 {
            result.append(number)
        } else {
            result.append(delimeter)
            result.append(number)
        }
    }
    return result
}
```swift
// Insert a number 'delimeter' between every two consecutive elements of input array `numbers'
// intersperse(numbers: [] as [Int], delimeter: 4) == [] as [Int]
// intersperse(numbers: [1, 2, 3], delimeter: 4) == [1, 4, 2, 4, 3]
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
    var result = [Int]()
    for (index, number) in numbers.enumerated() {
        if index == 0 {
            result.append(number)
        } else {
            result.append(delimeter)
            result.append(number)
        }
    }
    return result
}
<|file_separator|>

func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    var level = 0
    
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            level += 1
            stack.append(level)
        } else if paren == ")" {
            level = stack.popLast() ?? 0
        }
    }
    
    return stack
}
```swift
// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group, output the deepest level of nesting of parentheses.
// E.g. (()()) has maximum two levels of nesting while ((())) has three.
// parseNestedParens(parenString: "(()()) ((())) () ((())()())") == [2, 3, 1, 3]
func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    var level = 0
    
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            level += 1
            stack.append(level)
        } else if paren == ")" {
            level = stack.popLast() ?? 0
        }
    }
    
    return stack
}
<|file_separator|>
var result = [Int]() // initialization of variable 'result' was never used; consider replacing with assignment to '_' or removing it
 // XCTAssertTrue failed

func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    var level = 0
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            level += 1
            stack.append(level)
        } else if paren == ")" {
            level = stack.popLast() ?? 0
        }
    }
    return stack
}
```swift
// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group, output the deepest level of nesting of parentheses.
// E.g. (()()) has maximum two levels of nesting while ((())) has three.
// parseNestedParens(parenString: "(()()) ((())) () ((())()())") == [2, 3, 1, 3]
func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    var level = 0
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            level += 1
            stack.append(level)
        } else if paren == ")" {
            level = stack.popLast() ?? 0
        }
    }
    return stack
}

// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group, output the deepest level of nesting of parentheses.
// E.g. (()()) has maximum two levels of nesting while ((())) has three.
// parseNestedParens(parenString: "(()()) ((())) () ((())()())") == [2, 3, 1, 3]
func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    var level = 0
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            level += 1
            stack.append(level)
        } else if paren == ")" {
            level = stack.popLast() ?? 0
        }
    }
    return stack
}

// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group, output the deepest level of nesting of parentheses.
// E.g. (()()) has maximum two levels of nesting while ((())) has three.
// parseNestedParens(parenString: "(()()) ((())) () ((())()())") == [2, 3, 1, 3]
func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    var level = 0
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            level += 1
            stack.append(level)
        } else if paren == ")" {
            level = stack.popLast() ?? 0
        }
    }
    return stack
}

// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group, output the deepest level of nesting of parentheses.
// E.g. (()()) has maximum two levels of nesting while ((())) has three.
// parseNestedParens(parenString: "(()()) ((())) () ((())()())") == [2, 3, 1, 3]
func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    var level = 0
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            level += 1
            stack.append(level)
        } else if paren == ")" {
            level = stack.popLast() ?? 0
        }
    }
    return stack
}

// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group, output the deepest level of nesting of parentheses.
// E.g. (()()) has maximum two levels of nesting while ((())) has three.
// parseNestedParens(parenString: "(()()) ((())) () ((())()())") == [2, 3, 1, 3]
func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    var level = 0
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            level += 1
            stack.append(level)
        } else if paren == ")" {
            level = stack.popLast() ?? 0
        }
    }
    return stack
}

// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group, output the deepest level of nesting of parentheses.
// E.g. (()()) has maximum two levels of nesting while ((())) has three.
// parseNestedParens(parenString: "(()()) ((())) () ((())()())") == [2, 3, 1, 3]
func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    var level = 0
    for paren in paren
var result = [Int]() // initialization of variable 'result' was never used; consider replacing with assignment to '_' or removing it
 // XCTAssertTrue failed

func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    var level = 0
    
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            level += 1
            stack.append(level)
        } else if paren == ")" {
            level = stack.removeLast()
        }
    }
    
    return stack
}
```swift
// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group, output the deepest level of nesting of parentheses.
// E.g. (()()) has maximum two levels of nesting while ((())) has three.
// parseNestedParens(parenString: "(()()) ((())) () ((())()())") == [2, 3, 1, 3]
func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    var level = 0
    
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            level += 1
            stack.append(level)
        } else if paren == ")" {
            level = stack.removeLast()
        }
    }
    
    return stack
}
<|file_separator|>
var result = [Int]() // initialization of variable 'result' was never used; consider replacing with assignment to '_' or removing it
 // XCTAssertTrue failed

func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            stack.append(1)
        } else if paren == ")" {
            if stack.isEmpty {
                result.append(0)
            } else {
                stack.removeLast()
                if stack.isEmpty {
                    result.append(1)
                } else {
                    result.append(stack.last! + 1)
                }
            }
        }
    }
    return result
}
```swift
// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group, output the deepest level of nesting of parentheses.
// E.g. (()()) has maximum two levels of nesting while ((())) has three.
// parseNestedParens(parenString: "(()()) ((())) () ((())()())") == [2, 3, 1, 3]
func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            stack.append(1)
        } else if paren == ")" {
            if stack.isEmpty {
                result.append(0)
            } else {
                stack.removeLast()
                if stack.isEmpty {
                    result.append(1)
                } else {
                    result.append(stack.last! + 1)
                }
            }
        }
    }
    return result
}

// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group, output the deepest level of nesting of parentheses.
// E.g. (()()) has maximum two levels of nesting while ((())) has three.
// parseNestedParens(parenString: "(()()) ((())) () ((())()())") == [2, 3, 1, 3]
func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            stack.append(1)
        } else if paren == ")" {
            if stack.isEmpty {
                result.append(0)
            } else {
                stack.removeLast()
                if stack.isEmpty {
                    result.append(1)
                } else {
                    result.append(stack.last! + 1)
                }
            }
        }
    }
    return result
}

// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group, output the deepest level of nesting of parentheses.
// E.g. (()()) has maximum two levels of nesting while ((())) has three.
// parseNestedParens(parenString: "(()()) ((())) () ((())()())") == [2, 3, 1, 3]
func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            stack.append(1)
        } else if paren == ")" {
            if stack.isEmpty {
                result.append(0)
            } else {
                stack.removeLast()
                if stack.isEmpty {
                    result.append(1)
                } else {
                    result.append(stack.last! + 1)
                }
            }
        }
    }
    return result
}

// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group, output the deepest level of nesting of parentheses.
// E.g. (()()) has maximum two levels of nesting while ((())) has three.
// parseNestedParens(parenString: "(()()) ((())) () ((())()())") == [2, 3, 1, 3]
func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            stack.append(1)
        } else if paren == ")" {
            if stack.isEmpty {
                result.append(0)
            } else {
                stack.removeLast()
                if stack.isEmpty {
                    result.append(1)
                } else {
                    result.append(stack.last! + 1)
                }
            }
        }
    }
    return result
}

// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group, output the deepest level of nesting of parentheses.
// E.g. (()()) has maximum two levels of nesting while ((())) has three.
// parseNestedParens(parenString: "(()()) ((())) () ((())()())") == [2, 3, 1, 3]
func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            stack.append(1)
        } else if paren == ")" {
            if stack.
 // XCTAssertTrue failed

func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    var level = 0
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            level += 1
            stack.append(level)
        } else if paren == ")" {
            level = stack.removeLast()
        }
    }
    result = stack
    return result
}
```swift
// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group, output the deepest level of nesting of parentheses.
// E.g. (()()) has maximum two levels of nesting while ((())) has three.
// parseNestedParens(parenString: "(()()) ((())) () ((())()())") == [2, 3, 1, 3]
func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    var level = 0
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            level += 1
            stack.append(level)
        } else if paren == ")" {
            level = stack.removeLast()
        }
    }
    result = stack
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            stack.append(1)
        } else if paren == ")" {
            if let last = stack.popLast() {
                stack.append(last + 1)
            }
        }
    }
    
    for paren in stack {
        result.append(paren)
    }
    
    return result
}
```swift
// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group, output the deepest level of nesting of parentheses.
// E.g. (()()) has maximum two levels of nesting while ((())) has three.
// parseNestedParens(parenString: "(()()) ((())) () ((())()())") == [2, 3, 1, 3]
func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            stack.append(1)
        } else if paren == ")" {
            if let last = stack.popLast() {
                stack.append(last + 1)
            }
        }
    }
    
    for paren in stack {
        result.append(paren)
    }
    
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            stack.append(1)
        } else if paren == ")" {
            if let last = stack.popLast() {
                stack.append(last + 1)
            }
        }
    }
    for level in stack {
        result.append(level)
    }
    return result
}
```swift
// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group, output the deepest level of nesting of parentheses.
// E.g. (()()) has maximum two levels of nesting while ((())) has three.
// parseNestedParens(parenString: "(()()) ((())) () ((())()())") == [2, 3, 1, 3]
func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            stack.append(1)
        } else if paren == ")" {
            if let last = stack.popLast() {
                stack.append(last + 1)
            }
        }
    }
    for level in stack {
        result.append(level)
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var parenStack = [Int]()
    var parenLevel = 0
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            parenStack.append(parenLevel)
            parenLevel += 1
        } else if paren == ")" {
            parenLevel = parenStack.popLast() ?? 0
        }
    }
    return parenStack
}
```swift
// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group, output the deepest level of nesting of parentheses.
// E.g. (()()) has maximum two levels of nesting while ((())) has three.
// parseNestedParens(parenString: "(()()) ((())) () ((())()())") == [2, 3, 1, 3]
func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var parenStack = [Int]()
    var parenLevel = 0
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            parenStack.append(parenLevel)
            parenLevel += 1
        } else if paren == ")" {
            parenLevel = parenStack.popLast() ?? 0
        }
    }
    return parenStack
}
<|file_separator|>
var result = [Int]() // initialization of variable 'result' was never used; consider replacing with assignment to '_' or removing it
 // XCTAssertTrue failed

func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            stack.append(1)
        } else if paren == ")" {
            if let last = stack.popLast() {
                stack.append(last + 1)
            }
        }
    }
    
    for level in stack {
        result.append(level)
    }
    
    return result
}
```swift
// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group, output the deepest level of nesting of parentheses.
// E.g. (()()) has maximum two levels of nesting while ((())) has three.
// parseNestedParens(parenString: "(()()) ((())) () ((())()())") == [2, 3, 1, 3]
func parseNestedParens(parenString: String) -> [Int] {
    var result = [Int]()
    var stack = [Int]()
    
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            stack.append(1)
        } else if paren == ")" {
            if let last = stack.popLast() {
                stack.append(last + 1)
            }
        }
    }
    
    for level in stack {
        result.append(level)
    }
    
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func parseNestedParens(parenString: String) -> [Int] {
    // Write your code here
    var result = [Int]()
    var stack = [Int]()
    var level = 0
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            level += 1
            stack.append(level)
        } else if paren == ")" {
            level = stack.removeLast()
        }
    }
    return stack
}
```swift
// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group, output the deepest level of nesting of parentheses.
// E.g. (()()) has maximum two levels of nesting while ((())) has three.
// parseNestedParens(parenString: "(()()) ((())) () ((())()())") == [2, 3, 1, 3]
func parseNestedParens(parenString: String) -> [Int] {
    // Write your code here
    var result = [Int]()
    var stack = [Int]()
    var level = 0
    for paren in parenString.split(separator: " ") {
        if paren == "(" {
            level += 1
            stack.append(level)
        } else if paren == ")" {
            level = stack.removeLast()
        }
    }
    return stack
}
<|file_separator|>
var result = [Int]() // initialization of variable 'result' was never used; consider replacing with assignment to '_' or removing it
 // XCTAssertTrue failed

func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}
```swift
// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}
<|file_separator|>

func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}
```swift
// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter {

func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}
```swift
// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}
<|file_separator|>

func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}
```swift
// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}
<|file_separator|>

func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}
```swift
// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter {

func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}
```swift
// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}
<|file_separator|>

func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}
```swift
// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter {

func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}
```swift
// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}
<|file_separator|>

func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}
```swift
// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}

// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}
<|file_separator|>

func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}
```swift
// Filter an input array of strings only for ones that contain given substring
// filterBySubstring(strings: [] as [String], substring: "a") == [] as [String]
// filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a") == ["abc", "bacd", "array"]
func filterBySubstring(strings: [String], substring: String) -> [String] {
    return strings.filter { $0.contains(substring) }
}
<|file_separator|>

func sumProduct(numbers: [Int]) -> (Int, Int) {
    var sum = 0
    var product = 1
    for i in numbers {
        sum += i
        product *= i
    }
    return (sum, product)
}
```swift
// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
    var sum = 0
    var product = 1
    for i in numbers {
        sum += i
        product *= i
    }
    return (sum, product)
}

// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
    var sum = 0
    var product = 1
    for i in numbers {
        sum += i
        product *= i
    }
    return (sum, product)
}

// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
    var sum = 0
    var product = 1
    for i in numbers {
        sum += i
        product *= i
    }
    return (sum, product)
}

// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
    var sum = 0
    var product = 1
    for i in numbers {
        sum += i
        product *= i
    }
    return (sum, product)
}

// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
    var sum = 0
    var product = 1
    for i in numbers {
        sum += i
        product *= i
    }
    return (sum, product)
}

// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
    var sum = 0
    var product = 1
    for i in numbers {
        sum += i
        product *= i
    }
    return (sum, product)
}

// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
    var sum = 0
    var product = 1
    for i in numbers {
        sum += i
        product *= i
    }
    return (sum, product)
}

// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sum

func sumProduct(numbers: [Int]) -> (Int, Int) {
    var sum = 0
    var product = 1
    for number in numbers {
        sum += number
        product *= number
    }
    return (sum, product)
}
```swift
// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
    var sum = 0
    var product = 1
    for number in numbers {
        sum += number
        product *= number
    }
    return (sum, product)
}
<|file_separator|>

func sumProduct(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for number in numbers {
    sum += number
    product *= number
  }
  return (sum, product)
}
```swift
// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for number in numbers {
    sum += number
    product *= number
  }
  return (sum, product)
}
<|file_separator|>

func sumProduct(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for number in numbers {
    sum += number
    product *= number
  }
  return (sum, product)
}
```swift
// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for number in numbers {
    sum += number
    product *= number
  }
  return (sum, product)
}

// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for number in numbers {
    sum += number
    product *= number
  }
  return (sum, product)
}

// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for number in numbers {
    sum += number
    product *= number
  }
  return (sum, product)
}

// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for number in numbers {
    sum += number
    product *= number
  }
  return (sum, product)
}

// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for number in numbers {
    sum += number
    product *= number
  }
  return (sum, product)
}

// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for number in numbers {
    sum += number
    product *= number
  }
  return (sum, product)
}

// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for number in numbers {
    sum += number
    product *= number
  }
  return (sum, product)
}

// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sum

func sumProduct(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for number in numbers {
    sum += number
    product *= number
  }
  return (sum, product)
}

func minMax(numbers: [Int]) -> (Int, Int) {
  if numbers.count == 0 {
    return (0, 0)
  }
  var min = numbers[0]
  var max = numbers[0]
  for number in numbers {
    if number < min {
      min = number
    }
    if number > max {
      max = number
    }
  }
  return (min, max)
}

func sumFirstHalfAndSecondHalf(numbers: [Int]) -> (Int, Int) {
  if numbers.count % 2 == 0 {
    return (0, 0)
  }
  var firstHalf = 0
  var secondHalf = 0
  for i in 0..<numbers.count / 2 {
    firstHalf += numbers[i]
  }
  for i in numbers.count / 2..<numbers.count {
    secondHalf += numbers[i]
  }
  return (firstHalf, secondHalf)
}

func sumFirstLast(numbers: [Int]) -> (Int, Int) {
  if numbers.count == 0 {
    return (0, 0)
  }
  var first = 0
  var last = 0
  for i in 0..<numbers.count / 2 {
    first += numbers[i]
  }
  for i in numbers.count / 2..<numbers.count {
    last += numbers[i]
  }
  return (first, last)
}
```swift
// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for number in numbers {
    sum += number
    product *= number
  }
  return (sum, product)
}

// For a given array of integers, return a tuple consisting of the minimum and maximum integers in an array.
// Empty array should return a tuple with 0 and 0.
// minMax(numbers: [1, 2, 3, 4]) == (1, 4)
// minMax(numbers: [-1, -2, -3, -4]) == (-4, -1)
func minMax(numbers: [Int]) -> (Int, Int) {
  if numbers.count == 0 {
    return (0, 0)
  }
  var min = numbers[0]
  var max = numbers[0]
  for number in numbers {
    if number < min {
      min = number
    }
    if number > max {
      max = number
    }
  }
  return (min, max)
}

// For a given array of integers, return a tuple consisting of the sum of the first half of the array, and the sum of the second half of the array.
// If the array's length is odd, there is a single element whose sum is to be returned.
// sumFirstHalfAndSecondHalf(numbers: [1, 2, 3, 4]) == (1 + 3, 2 + 3)
// sumFirstHalfAndSecondHalf(numbers: [1, 2, 3, 4, 5]) == (1 + 3, 2 + 4)
// sumFirstHalfAndSecondHalf(numbers: [1, 2, 3, 4, 5, 6]) == (1 + 3, 2 + 4)
func sumFirstHalfAndSecondHalf(numbers: [Int]) -> (Int, Int) {
  if numbers.count % 2 == 0 {
    return (0, 0)
  }
  var firstHalf = 0
  var secondHalf = 0
  for i in 0..<numbers.count / 2 {
    firstHalf += numbers[i]
  }
  for i in numbers.count / 2..<numbers.count {
    secondHalf += numbers[i]
  }
  return (firstHalf, secondHalf)
}

// For a given array of integers, return a tuple consisting of the sum of the first n elements, where n is the smallest of n1 and n2, and the sum of the last n elements, where n is the largest of n1 and n2.
// sumFirstLast(numbers: [1, 2, 3, 4]) == (1 + 4, 2 + 3)
// sumFirstLast(numbers: [1, 2, 3, 4, 5]) == (1 + 5, 2 + 4)
// sumFirstLast(numbers: [1, 2, 3, 4, 5, 6]) == (1 + 6, 2 + 5)
func sumFirstLast(numbers: [Int]) -> (Int, Int) {
  if numbers.count == 0 {
    return (0, 0)
  }
  var first = 0
  var last = 0
  for i in 0..<numbers.count / 2 {
    first += numbers[i]
  }
  for i in numbers.count / 2..<numbers.count {
    last += numbers[i]
  }
  return (first, last)
}

// For a given array of integers, return a tuple consisting of the sum of the elements of the first half of the array, followed by the sum of the elements of the second half of the array.
// If the array's length is odd, there is a single element whose sum is to be returned.
// sumFirstHalfAndSecondHalf(numbers: [1, 2, 3, 4]) == (1 + 3, 2 + 4)
// sumFirstHalfAndSecondHalf(numbers: [1, 2, 3, 4, 5]) == (1 + 5, 2 + 4)
// sumFirstHalfAndSecondHalf(numbers: [1, 2, 3, 4, 5, 6]) == (1 + 6, 2 + 5)
func sumFirstHalfAndSecondHalf(numbers: [Int]) -> (Int

func sumProduct(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for number in numbers {
    sum += number
    product *= number
  }
  return (sum, product)
}

func sumProductExceptFirst(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for i in 1..<numbers.count {
    sum += numbers[i]
    product *= numbers[i]
  }
  return (sum, product)
}

func sumProductExceptLast(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for i in 0..<numbers.count-1 {
    sum += numbers[i]
    product *= numbers[i]
  }
  return (sum, product)
}

func sumProductExceptBoth(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for i in 1..<numbers.count-1 {
    sum += numbers[i]
    product *= numbers[i]
  }
  return (sum, product)
}

func sumProductExceptSecond(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for i in 2..<numbers.count {
    sum += numbers[i]
    product *= numbers[i]
  }
  return (sum, product)
}

func sumProductExceptThird(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for i in 3..<numbers.count {
    sum += numbers[i]
    product *= numbers[i]
  }
  return (sum, product)
}

func sumProductExceptFourth(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for i in 4..<numbers.count {
    sum += numbers[i]
    product *= numbers[i]
  }
  return (sum, product)
}
```swift
// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for number in numbers {
    sum += number
    product *= number
  }
  return (sum, product)
}

// For a given array of integers, return a tuple consisting of the sum and product of all the integers in an array,
// except for the number at index 0.
// sumProductExceptFirst(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProductExceptFirst(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for i in 1..<numbers.count {
    sum += numbers[i]
    product *= numbers[i]
  }
  return (sum, product)
}

// For a given array of integers, return a tuple consisting of the sum and product of all the integers in an array,
// except for the number at index n-1.
// sumProductExceptLast(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProductExceptLast(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for i in 0..<numbers.count-1 {
    sum += numbers[i]
    product *= numbers[i]
  }
  return (sum, product)
}

// For a given array of integers, return a tuple consisting of the sum and product of all the integers in an array,
// except for the number at index 0 and n-1.
// sumProductExceptBoth(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProductExceptBoth(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for i in 1..<numbers.count-1 {
    sum += numbers[i]
    product *= numbers[i]
  }
  return (sum, product)
}

// For a given array of integers, return a tuple consisting of the sum and product of all the integers in an array,
// except for the number at index n-2.
// sumProductExceptSecond(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProductExceptSecond(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for i in 2..<numbers.count {
    sum += numbers[i]
    product *= numbers[i]
  }
  return (sum, product)
}

// For a given array of integers, return a tuple consisting of the sum and product of all the integers in an array,
// except for the number at index n-3.
// sumProductExceptThird(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProductExceptThird(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for i in 3..<numbers.count {
    sum += numbers[i]
    product *= numbers[i]
  }
  return (sum, product)
}

// For a given array of integers, return a tuple consisting of the sum and product of all the integers in an array,
// except for the number at index n-4.
// sumProductExceptFourth(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProductExceptFourth(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for i in 4..<numbers.count {
    sum += numbers[i]
    product *= numbers[i]
  }
  return (sum, product)
}

// For a given array of integers, return a tuple consisting of the sum and product of all the integers in an array,
// except for the number at index n-5.
// sumProductExceptFifth(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProductExceptFifth(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for i in 5..<numbers.count {
    sum += numbers[i]

func sumProduct(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for i in numbers {
    sum += i
    product *= i
  }
  return (sum, product)
}
```swift
// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
  var sum = 0
  var product = 1
  for i in numbers {
    sum += i
    product *= i
  }
  return (sum, product)
}
<|file_separator|>

func sumProduct(numbers: [Int]) -> (Int, Int) {
    var sum = 0
    var product = 1
    for number in numbers {
        sum += number
        product *= number
    }
    return (sum, product)
}
```swift
// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
    var sum = 0
    var product = 1
    for number in numbers {
        sum += number
        product *= number
    }
    return (sum, product)
}
<|file_separator|>

func sumProduct(numbers: [Int]) -> (Int, Int) {
    var sum = 0
    var product = 1
    for number in numbers {
        sum += number
        product *= number
    }
    return (sum, product)
}
```swift
// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
    var sum = 0
    var product = 1
    for number in numbers {
        sum += number
        product *= number
    }
    return (sum, product)
}
<|file_separator|>

func sumProduct(numbers: [Int]) -> (Int, Int) {
    var sum = 0
    var product = 1
    for number in numbers {
        sum += number
        product *= number
    }
    return (sum, product)
}
```swift
// For a given array of integers, return a tuple consisting of a sum and a product of all the integers in an array.
// Empty sum should be equal to 0 and empty product should be equal to 1.
// sumProduct(numbers: [] as [Int]) == (0, 1)
// sumProduct(numbers: [1, 2, 3, 4]) == (10, 24)
func sumProduct(numbers: [Int]) -> (Int, Int) {
    var sum = 0
    var product = 1
    for number in numbers {
        sum += number
        product *= number
    }
    return (sum, product)
}
<|file_separator|>

func rollingMax(numbers: [Int]) -> [Int] {
  var result = [Int]()
  var max = 0
  for number in numbers {
    if number > max {
      max = number
    }
    result.append(max)
  }
  return result
}

func rollingMin(numbers: [Int]) -> [Int] {
  var result = [Int]()
  var min = 0
  for number in numbers {
    if number < min {
      min = number
    }
    result.append(min)
  }
  return result
}

func rollingAvg(numbers: [Int]) -> [Double] {
  var result = [Double]()
  var sum = 0
  var count = 0
  for number in numbers {
    sum += number
    count += 1
    result.append(Double(sum) / Double(count))
  }
  return result
}
```swift
// From a given array of integers, generate an array of rolling maximum element found until given moment
// in the sequence.
// rollingMax(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 3, 3, 3, 4, 4]
func rollingMax(numbers: [Int]) -> [Int] {
  var result = [Int]()
  var max = 0
  for number in numbers {
    if number > max {
      max = number
    }
    result.append(max)
  }
  return result
}

// From a given array of integers, generate an array of rolling minimum element found until given moment
// in the sequence.
// rollingMin(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 1, 2, 2, 2, 2, 2]
func rollingMin(numbers: [Int]) -> [Int] {
  var result = [Int]()
  var min = 0
  for number in numbers {
    if number < min {
      min = number
    }
    result.append(min)
  }
  return result
}

// From a given array of integers, generate an array of rolling average element found until given moment
// in the sequence.
// rollingAvg(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 1.5, 2, 2, 2, 2.5, 2.5]
func rollingAvg(numbers: [Int]) -> [Double] {
  var result = [Double]()
  var sum = 0
  var count = 0
  for number in numbers {
    sum += number
    count += 1
    result.append(Double(sum) / Double(count))
  }
  return result
}

// From a given array of integers, generate an array of rolling average element found until given moment
// in the sequence.
// rollingAvg(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 1.5, 2, 2, 2, 2.5, 2.5]
func rollingAvg(numbers: [Int]) -> [Double] {
  var result = [Double]()
  var sum = 0
  var count = 0
  for number in numbers {
    sum += number
    count += 1
    result.append(Double(sum) / Double(count))
  }
  return result
}
<|file_separator|>

func rollingMax(numbers: [Int]) -> [Int] {
  var result = [Int]()
  var max = 0
  for number in numbers {
    if number > max {
      max = number
    }
    result.append(max)
  }
  return result
}

func rollingMin(numbers: [Int]) -> [Int] {
  var result = [Int]()
  var min = 0
  for number in numbers {
    if number < min {
      min = number
    }
    result.append(min)
  }
  return result
}

func rollingAvg(numbers: [Int]) -> [Double] {
  var result = [Double]()
  var sum = 0
  var count = 0
  for number in numbers {
    sum += number
    count += 1
    result.append(Double(sum) / Double(count))
  }
  return result
}

func rollingSum(numbers: [Int]) -> [Int] {
  var result = [Int]()
  var sum = 0
  for number in numbers {
    sum += number
    result.append(sum)
  }
  return result
}

func rollingMedian(numbers: [Int]) -> [Double] {
  var result = [Double]()
  var sorted = numbers.sorted()
  for number in numbers {
    let index = sorted.index(of: number)!
    if index % 2 == 0 {
      result.append(Double(sorted[index - 1] + sorted[index]) / 2)
    } else {
      result.append(Double(sorted[index]))
    }
  }
  return result
}

func rollingMode(numbers: [Int]) -> [Int] {
  var result = [Int]()
  var mode = 0
  var count = 0
  for number in numbers {
    if number == mode {
      count += 1
    } else {
      if count > 0 {
        result.append(mode)
      }
      mode = number
      count = 1
    }
  }
  if count > 0 {
    result.append(mode)
  }
  return result
}
```swift
// From a given array of integers, generate an array of rolling maximum element found until given moment
// in the sequence.
// rollingMax(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 3, 3, 3, 4, 4]
func rollingMax(numbers: [Int]) -> [Int] {
  var result = [Int]()
  var max = 0
  for number in numbers {
    if number > max {
      max = number
    }
    result.append(max)
  }
  return result
}

// From a given array of integers, generate an array of rolling minimum element found until given moment
// in the sequence.
// rollingMin(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 1, 1, 1, 2, 2]
func rollingMin(numbers: [Int]) -> [Int] {
  var result = [Int]()
  var min = 0
  for number in numbers {
    if number < min {
      min = number
    }
    result.append(min)
  }
  return result
}

// From a given array of integers, generate an array of rolling average element found until given moment
// in the sequence.
// rollingAvg(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 2.5, 2, 2.5, 3, 3]
func rollingAvg(numbers: [Int]) -> [Double] {
  var result = [Double]()
  var sum = 0
  var count = 0
  for number in numbers {
    sum += number
    count += 1
    result.append(Double(sum) / Double(count))
  }
  return result
}

// From a given array of integers, generate an array of rolling sum element found until given moment
// in the sequence.
// rollingSum(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 3, 6, 5, 10, 10, 10]
func rollingSum(numbers: [Int]) -> [Int] {
  var result = [Int]()
  var sum = 0
  for number in numbers {
    sum += number
    result.append(sum)
  }
  return result
}

// From a given array of integers, generate an array of rolling median element found until given moment
// in the sequence.
// rollingMedian(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 2, 2, 2.5, 3, 3]
func rollingMedian(numbers: [Int]) -> [Double] {
  var result = [Double]()
  var sorted = numbers.sorted()
  for number in numbers {
    let index = sorted.index(of: number)!
    if index % 2 == 0 {
      result.append(Double(sorted[index - 1] + sorted[index]) / 2)
    } else {
      result.append(Double(sorted[index]))
    }
  }
  return result
}

// From a given array of integers, generate an array of rolling mode element found until given moment
// in the sequence.
// rollingMode(numbers: [1, 2, 3, 2, 3, 4, 2]) == [2, 3, 2, 3, 2, 3, 2]
func rollingMode(numbers: [Int]) -> [Int] {
  var result = [Int]()
  var mode = 0
  var count = 0
  for number in numbers {
    if number == mode {
      count += 1
    } else {
      if count > 0 {
        result.append(mode)
      }
      mode = number
      count = 1
    }
  }
  if count > 0 {
    result.append(mode)
  }
  return result
}

// From a given array of integers, generate an array of rolling mode element found until given moment
// in the sequence.
// rollingMode(numbers: [1, 2, 3, 2, 3, 4, 2]) == [2, 3, 2, 3, 2, 3, 2]
func rollingMode(numbers: [Int]) -> [Int] {
  var result = [Int]()
  var mode = 0
  var count = 0
  for number in numbers {
    if number == mode {
      count += 1
    
var sorted = numbers.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constant
let index = sorted.index(of: number)! // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'

func rollingMax(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var max = 0
    for number in numbers {
        if number > max {
            max = number
        }
        result.append(max)
    }
    return result
}

func rollingMin(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var min = 0
    for number in numbers {
        if number < min {
            min = number
        }
        result.append(min)
    }
    return result
}

func rollingAvg(numbers: [Int]) -> [Double] {
    var result = [Double]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(Double(sum) / Double(numbers.count))
    }
    return result
}
```swift
// From a given array of integers, generate an array of rolling maximum element found until given moment
// in the sequence.
// rollingMax(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 3, 3, 3, 4, 4]
func rollingMax(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var max = 0
    for number in numbers {
        if number > max {
            max = number
        }
        result.append(max)
    }
    return result
}

// From a given array of integers, generate an array of rolling minimum element found until given moment
// in the sequence.
// rollingMin(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 1, 2, 2, 2, 2, 2]
func rollingMin(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var min = 0
    for number in numbers {
        if number < min {
            min = number
        }
        result.append(min)
    }
    return result
}

// From a given array of integers, generate an array of rolling average element found until given moment
// in the sequence.
// rollingAvg(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 1.5, 2, 2, 2, 2.5, 2.5]
func rollingAvg(numbers: [Int]) -> [Double] {
    var result = [Double]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(Double(sum) / Double(numbers.count))
    }
    return result
}

// From a given array of integers, generate an array of rolling average element found until given moment
// in the sequence.
// rollingAvg(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 1.5, 2, 2, 2, 2.5, 2.5]
func rollingAvg(numbers: [Int]) -> [Double] {
    var result = [Double]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(Double(sum) / Double(numbers.count))
    }
    return result
}<|file_separator|>

func rollingMax(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var max = 0
    for number in numbers {
        if number > max {
            max = number
        }
        result.append(max)
    }
    return result
}
```swift
// From a given array of integers, generate an array of rolling maximum element found until given moment
// in the sequence.
// rollingMax(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 3, 3, 3, 4, 4]
func rollingMax(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var max = 0
    for number in numbers {
        if number > max {
            max = number
        }
        result.append(max)
    }
    return result
}
<|file_separator|>

func rollingMax(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var max = 0
    for number in numbers {
        if number > max {
            max = number
        }
        result.append(max)
    }
    return result
}

func rollingMin(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var min = 0
    for number in numbers {
        if number < min {
            min = number
        }
        result.append(min)
    }
    return result
}

func rollingAvg(numbers: [Int]) -> [Double] {
    var result = [Double]()
    var sum = 0
    var count = 0
    for number in numbers {
        sum += number
        count += 1
        result.append(Double(sum) / Double(count))
    }
    return result
}

func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(sum)
    }
    return result
}
```swift
// From a given array of integers, generate an array of rolling maximum element found until given moment
// in the sequence.
// rollingMax(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 3, 3, 3, 4, 4]
func rollingMax(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var max = 0
    for number in numbers {
        if number > max {
            max = number
        }
        result.append(max)
    }
    return result
}

// From a given array of integers, generate an array of rolling minimum element found until given moment
// in the sequence.
// rollingMin(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 2, 2, 2, 2, 2]
func rollingMin(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var min = 0
    for number in numbers {
        if number < min {
            min = number
        }
        result.append(min)
    }
    return result
}

// From a given array of integers, generate an array of rolling average element found until given moment
// in the sequence.
// rollingAvg(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 2.5, 2.5, 2.5, 3, 3]
func rollingAvg(numbers: [Int]) -> [Double] {
    var result = [Double]()
    var sum = 0
    var count = 0
    for number in numbers {
        sum += number
        count += 1
        result.append(Double(sum) / Double(count))
    }
    return result
}

// From a given array of integers, generate an array of rolling sum element found until given moment
// in the sequence.
// rollingSum(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 3, 6, 6, 9, 12, 12]
func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(sum)
    }
    return result
}

// From a given array of integers, generate an array of rolling sum element found until given moment
// in the sequence.
// rollingSum(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 3, 6, 6, 9, 12, 12]
func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(sum)
    }
    return result
}

// From a given array of integers, generate an array of rolling sum element found until given moment
// in the sequence.
// rollingSum(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 3, 6, 6, 9, 12, 12]
func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(sum)
    }
    return result
}

// From a given array of integers, generate an array of rolling sum element found until given moment
// in the sequence.
// rollingSum(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 3, 6, 6, 9, 12, 12]
func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(sum)
    }
    return result
}

// From a given array of integers, generate an array of rolling sum element found until given moment
// in the sequence.
// rollingSum(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 3, 6, 6, 9, 12, 12]
func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number in numbers {

func rollingMax(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var max = 0
    for number in numbers {
        if number > max {
            max = number
        }
        result.append(max)
    }
    return result
}

func rollingMin(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var min = 0
    for number in numbers {
        if number < min {
            min = number
        }
        result.append(min)
    }
    return result
}

func rollingAvg(numbers: [Int]) -> [Double] {
    var result = [Double]()
    var sum = 0
    var count = 0
    for number in numbers {
        sum += number
        count += 1
        result.append(Double(sum) / Double(count))
    }
    return result
}

func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(sum)
    }
    return result
}

func rollingMedian(numbers: [Int]) -> [Double] {
    var result = [Double]()
    var sorted = numbers.sorted()
    for number in sorted {
        result.append(Double(number))
    }
    return result
}

func rollingMode(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var mode = 0
    var count = 0
    for number in numbers {
        if number == mode {
            count += 1
        } else {
            if count > 0 {
                result.append(mode)
            }
            mode = number
            count = 1
        }
    }
    if count > 0 {
        result.append(mode)
    }
    return result
}
```swift
// From a given array of integers, generate an array of rolling maximum element found until given moment
// in the sequence.
// rollingMax(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 3, 3, 3, 4, 4]
func rollingMax(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var max = 0
    for number in numbers {
        if number > max {
            max = number
        }
        result.append(max)
    }
    return result
}

// From a given array of integers, generate an array of rolling minimum element found until given moment
// in the sequence.
// rollingMin(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 2, 2, 2, 2, 2]
func rollingMin(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var min = 0
    for number in numbers {
        if number < min {
            min = number
        }
        result.append(min)
    }
    return result
}

// From a given array of integers, generate an array of rolling average element found until given moment
// in the sequence.
// rollingAvg(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 2.5, 2.5, 2.5, 3, 3]
func rollingAvg(numbers: [Int]) -> [Double] {
    var result = [Double]()
    var sum = 0
    var count = 0
    for number in numbers {
        sum += number
        count += 1
        result.append(Double(sum) / Double(count))
    }
    return result
}

// From a given array of integers, generate an array of rolling sum element found until given moment
// in the sequence.
// rollingSum(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 3, 6, 6, 9, 12, 12]
func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(sum)
    }
    return result
}

// From a given array of integers, generate an array of rolling median element found until given moment
// in the sequence.
// rollingMedian(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 2.5, 2.5, 2.5, 3, 3]
func rollingMedian(numbers: [Int]) -> [Double] {
    var result = [Double]()
    var sorted = numbers.sorted()
    for number in sorted {
        result.append(Double(number))
    }
    return result
}

// From a given array of integers, generate an array of rolling mode element found until given moment
// in the sequence.
// rollingMode(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 2, 2, 2, 2, 2]
func rollingMode(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var mode = 0
    var count = 0
    for number in numbers {
        if number == mode {
            count += 1
        } else {
            if count > 0 {
                result.append(mode)
            }
            mode = number
            count = 1
        }
    }
    if count > 0 {
        result.append(mode)
    }
    return result
}

// From a given array of integers, generate an array of rolling mode element found until given moment
// in the sequence.
// rollingMode(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 2, 2, 2, 2, 2]
func rollingMode(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var mode = 0
    var count = 0
    for number in numbers {
        if number == mode {
            count += 1
        } else {
            if count > 0 {
                result.append(mode)
            }
            mode = number
            count = 1
        }
    }
    if count > 0 {
        result.append(
var sorted = numbers.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constant

func rollingMax(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var max = 0
    for number in numbers {
        if number > max {
            max = number
        }
        result.append(max)
    }
    return result
}

func rollingMin(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var min = 0
    for number in numbers {
        if number < min {
            min = number
        }
        result.append(min)
    }
    return result
}

func rollingAvg(numbers: [Int]) -> [Double] {
    var result = [Double]()
    var sum = 0
    var count = 0
    for number in numbers {
        sum += number
        count += 1
        result.append(Double(sum) / Double(count))
    }
    return result
}

func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(sum)
    }
    return result
}

func rollingProduct(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var product = 1
    for number in numbers {
        product *= number
        result.append(product)
    }
    return result
}
```swift
// From a given array of integers, generate an array of rolling maximum element found until given moment
// in the sequence.
// rollingMax(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 3, 3, 3, 4, 4]
func rollingMax(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var max = 0
    for number in numbers {
        if number > max {
            max = number
        }
        result.append(max)
    }
    return result
}

// From a given array of integers, generate an array of rolling minimum element found until given moment
// in the sequence.
// rollingMin(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 1, 2, 2, 2, 2, 2]
func rollingMin(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var min = 0
    for number in numbers {
        if number < min {
            min = number
        }
        result.append(min)
    }
    return result
}

// From a given array of integers, generate an array of rolling average element found until given moment
// in the sequence.
// rollingAvg(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 1.5, 2, 2, 2, 2.5, 2.5]
func rollingAvg(numbers: [Int]) -> [Double] {
    var result = [Double]()
    var sum = 0
    var count = 0
    for number in numbers {
        sum += number
        count += 1
        result.append(Double(sum) / Double(count))
    }
    return result
}

// From a given array of integers, generate an array of rolling sum element found until given moment
// in the sequence.
// rollingSum(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 3, 6, 9, 12, 15, 18]
func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(sum)
    }
    return result
}

// From a given array of integers, generate an array of rolling product element found until given moment
// in the sequence.
// rollingProduct(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 6, 24, 12, 8, 4]
func rollingProduct(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var product = 1
    for number in numbers {
        product *= number
        result.append(product)
    }
    return result
}

// From a given array of integers, generate an array of rolling sum element found until given moment
// in the sequence.
// rollingSum(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 3, 6, 9, 12, 15, 18]
func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(sum)
    }
    return result
}

// From a given array of integers, generate an array of rolling sum element found until given moment
// in the sequence.
// rollingSum(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 3, 6, 9, 12, 15, 18]
func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(sum)
    }
    return result
}

// From a given array of integers, generate an array of rolling sum element found until given moment
// in the sequence.
// rollingSum(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 3, 6, 9, 12, 15, 18]
func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number

func rollingMax(numbers: [Int]) -> [Int] {
  var result = [Int]()
  var max = 0
  for number in numbers {
    if number > max {
      max = number
    }
    result.append(max)
  }
  return result
}
```swift
// From a given array of integers, generate an array of rolling maximum element found until given moment
// in the sequence.
// rollingMax(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 3, 3, 3, 4, 4]
func rollingMax(numbers: [Int]) -> [Int] {
  var result = [Int]()
  var max = 0
  for number in numbers {
    if number > max {
      max = number
    }
    result.append(max)
  }
  return result
}
<|file_separator|>

func rollingMax(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var max = 0
    for number in numbers {
        if number > max {
            max = number
        }
        result.append(max)
    }
    return result
}

func rollingMin(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var min = 0
    for number in numbers {
        if number < min {
            min = number
        }
        result.append(min)
    }
    return result
}

func rollingAverage(numbers: [Int]) -> [Double] {
    var result = [Double]()
    var sum = 0
    var count = 0
    for number in numbers {
        sum += number
        count += 1
        result.append(Double(sum) / Double(count))
    }
    return result
}

func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(sum)
    }
    return result
}
```swift
// From a given array of integers, generate an array of rolling maximum element found until given moment
// in the sequence.
// rollingMax(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 3, 3, 3, 4, 4]
func rollingMax(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var max = 0
    for number in numbers {
        if number > max {
            max = number
        }
        result.append(max)
    }
    return result
}

// From a given array of integers, generate an array of rolling minimum element found until given moment
// in the sequence.
// rollingMin(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 1, 2, 2, 2, 2, 2]
func rollingMin(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var min = 0
    for number in numbers {
        if number < min {
            min = number
        }
        result.append(min)
    }
    return result
}

// From a given array of integers, generate an array of rolling average element found until given moment
// in the sequence.
// rollingAverage(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 1.5, 2, 2.5, 3, 3.5, 4]
func rollingAverage(numbers: [Int]) -> [Double] {
    var result = [Double]()
    var sum = 0
    var count = 0
    for number in numbers {
        sum += number
        count += 1
        result.append(Double(sum) / Double(count))
    }
    return result
}

// From a given array of integers, generate an array of rolling sum element found until given moment
// in the sequence.
// rollingSum(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 3, 6, 9, 12, 15, 18]
func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(sum)
    }
    return result
}

// From a given array of integers, generate an array of rolling sum element found until given moment
// in the sequence.
// rollingSum(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 3, 6, 9, 12, 15, 18]
func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(sum)
    }
    return result
}

// From a given array of integers, generate an array of rolling sum element found until given moment
// in the sequence.
// rollingSum(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 3, 6, 9, 12, 15, 18]
func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(sum)
    }
    return result
}

// From a given array of integers, generate an array of rolling sum element found until given moment
// in the sequence.
// rollingSum(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 3, 6, 9, 12, 15, 18]
func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(sum)
    }
    return result
}

// From a given array of integers, generate an array of rolling sum element found until given moment
// in the sequence.
// rollingSum(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 3, 6, 9, 12, 15, 18]
func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for

func rollingMax(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var max = 0
    for number in numbers {
        if number > max {
            max = number
        }
        result.append(max)
    }
    return result
}

func rollingMin(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var min = 0
    for number in numbers {
        if number < min {
            min = number
        }
        result.append(min)
    }
    return result
}

func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(sum)
    }
    return result
}

func rollingAvg(numbers: [Int]) -> [Double] {
    var result = [Double]()
    var sum = 0
    var count = 0
    for number in numbers {
        sum += number
        count += 1
        result.append(Double(sum) / Double(count))
    }
    return result
}

func rollingMedian(numbers: [Int]) -> [Double] {
    var result = [Double]()
    var sorted = numbers.sorted()
    var count = 0
    for number in numbers {
        count += 1
        var index = sorted.index(of: number)
        var left = sorted[0..<index]
        var right = sorted[index+1..<sorted.count]
        var median = 0.0
        if left.count % 2 == 0 {
            median = Double(left[left.count/2] + left[left.count/2 - 1]) / 2.0
        } else {
            median = Double(left[left.count/2])
        }
        if right.count % 2 == 0 {
            median += Double(right[right.count/2] + right[right.count/2 - 1]) / 2.0
        } else {
            median += Double(right[right.count/2])
        }
        median /= 2.0
        result.append(median)
    }
    return result
}
```swift
// From a given array of integers, generate an array of rolling maximum element found until given moment
// in the sequence.
// rollingMax(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 3, 3, 3, 4, 4]
func rollingMax(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var max = 0
    for number in numbers {
        if number > max {
            max = number
        }
        result.append(max)
    }
    return result
}

// From a given array of integers, generate an array of rolling minimum element found until given moment
// in the sequence.
// rollingMin(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 1, 1, 1, 2, 2]
func rollingMin(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var min = 0
    for number in numbers {
        if number < min {
            min = number
        }
        result.append(min)
    }
    return result
}

// From a given array of integers, generate an array of rolling sum element found until given moment
// in the sequence.
// rollingSum(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 3, 6, 6, 9, 12, 12]
func rollingSum(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var sum = 0
    for number in numbers {
        sum += number
        result.append(sum)
    }
    return result
}

// From a given array of integers, generate an array of rolling average element found until given moment
// in the sequence.
// rollingAvg(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 1.5, 2, 2, 2.5, 3, 3]
func rollingAvg(numbers: [Int]) -> [Double] {
    var result = [Double]()
    var sum = 0
    var count = 0
    for number in numbers {
        sum += number
        count += 1
        result.append(Double(sum) / Double(count))
    }
    return result
}

// From a given array of integers, generate an array of rolling median element found until given moment
// in the sequence.
// rollingMedian(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 2, 2, 2.5, 3, 3]
func rollingMedian(numbers: [Int]) -> [Double] {
    var result = [Double]()
    var sorted = numbers.sorted()
    var count = 0
    for number in numbers {
        count += 1
        var index = sorted.index(of: number)
        var left = sorted[0..<index]
        var right = sorted[index+1..<sorted.count]
        var median = 0.0
        if left.count % 2 == 0 {
            median = Double(left[left.count/2] + left[left.count/2 - 1]) / 2.0
        } else {
            median = Double(left[left.count/2])
        }
        if right.count % 2 == 0 {
            median += Double(right[right.count/2] + right[right.count/2 - 1]) / 2.0
        } else {
            median += Double(right[right.count/2])
        }
        median /= 2.0
        result.append(median)
    }
    return result
}

// From a given array of integers, generate an array of rolling mode element found until given moment
// in the sequence.
// rollingMode(numbers: [1, 2, 3, 2, 3, 4, 2]) == [1, 2, 2, 2, 2, 2, 2]
func rollingMode(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var mode = 0
    var count = 0
    for number in numbers {
        if number == mode {
            count += 1
        } else {
            if count > 0 {
                result.append(mode)
            }
            mode = number
            count = 1
        }
    }
    if count > 0 {
        result.append(mode)
    }
var index = sorted.index(of: number) // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'
var left = sorted[0..<index] // value of optional type 'Array<Int>.Index?' (aka 'Optional<Int>') must be unwrapped to a value of type 'Array<Int>.Index' (aka 'Int')
var right = sorted[index+1..<sorted.count] // value of optional type 'Array<Int>.Index?' (aka 'Optional<Int>') must be unwrapped to a value of type 'Array<Int>.Index' (aka 'Int')

func makePalindrome(string: String) -> String {
  if string.count == 0 {
    return ""
  }
  
  var longestPalindrome = ""
  
  for i in 0..<string.count {
    let prefix = string[string.index(string.startIndex, offsetBy: i)]
    let postfix = string[string.index(string.endIndex, offsetBy: -i - 1)]
    
    if prefix == postfix {
      let palindrome = prefix + makePalindrome(string: string[string.index(string.startIndex, offsetBy: i + 1)..<string.index(string.endIndex, offsetBy: -i)]) + postfix
      if palindrome.count > longestPalindrome.count {
        longestPalindrome = palindrome
      }
    }
  }
  
  return longestPalindrome
}
```swift
// Find the shortest palindrome that begins with a supplied string.
// Algorithm idea is simple:
// - Find the longest postfix of supplied string that is a palindrome.
// - Append to the end of the string reverse of a string prefix that comes before the palindromic suffix.
// makePalindrome(string: "") == ""
// makePalindrome(string: "cat") == "catac"
// makePalindrome(string: "cata") == "catac"
func makePalindrome(string: String) -> String {
  if string.count == 0 {
    return ""
  }
  
  var longestPalindrome = ""
  
  for i in 0..<string.count {
    let prefix = string[string.index(string.startIndex, offsetBy: i)]
    let postfix = string[string.index(string.endIndex, offsetBy: -i - 1)]
    
    if prefix == postfix {
      let palindrome = prefix + makePalindrome(string: string[string.index(string.startIndex, offsetBy: i + 1)..<string.index(string.endIndex, offsetBy: -i)]) + postfix
      if palindrome.count > longestPalindrome.count {
        longestPalindrome = palindrome
      }
    }
  }
  
  return longestPalindrome
}
<|file_separator|>
let palindrome = prefix + makePalindrome(string: string[string.index(string.startIndex, offsetBy: i + 1)..<string.index(string.endIndex, offsetBy: -i)]) + postfix // cannot convert value of type 'Character' to expected argument type 'String'
let palindrome = prefix + makePalindrome(string: string[string.index(string.startIndex, offsetBy: i + 1)..<string.index(string.endIndex, offsetBy: -i)]) + postfix // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent
let palindrome = prefix + makePalindrome(string: string[string.index(string.startIndex, offsetBy: i + 1)..<string.index(string.endIndex, offsetBy: -i)]) + postfix // cannot convert value of type 'Character' to expected argument type 'String'

func makePalindrome(string: String) -> String {
  let reversed = string.reversed()
  let longest = reversed.prefix(while: { $0 == string.first })
  return string + String(reversed.dropFirst(longest.count))
}
```swift
// Find the shortest palindrome that begins with a supplied string.
// Algorithm idea is simple:
// - Find the longest postfix of supplied string that is a palindrome.
// - Append to the end of the string reverse of a string prefix that comes before the palindromic suffix.
// makePalindrome(string: "") == ""
// makePalindrome(string: "cat") == "catac"
// makePalindrome(string: "cata") == "catac"
func makePalindrome(string: String) -> String {
  let reversed = string.reversed()
  let longest = reversed.prefix(while: { $0 == string.first })
  return string + String(reversed.dropFirst(longest.count))
}
<|file_separator|>
 // XCTAssertTrue failed

func makePalindrome(string: String) -> String {
  if string.count == 0 {
    return ""
  }
  
  var longestPalindrome = ""
  
  for i in 0..<string.count {
    let prefix = string[string.index(string.startIndex, offsetBy: i)]
    let postfix = string[string.index(string.startIndex, offsetBy: string.count - i - 1)]
    
    if prefix == postfix {
      let palindrome = string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: string.count - i - 1)]
      if palindrome.count > longestPalindrome.count {
        longestPalindrome = palindrome
      }
    }
  }
  
  return longestPalindrome + string.reversed()
}
```swift
// Find the shortest palindrome that begins with a supplied string.
// Algorithm idea is simple:
// - Find the longest postfix of supplied string that is a palindrome.
// - Append to the end of the string reverse of a string prefix that comes before the palindromic suffix.
// makePalindrome(string: "") == ""
// makePalindrome(string: "cat") == "catac"
// makePalindrome(string: "cata") == "catac"
func makePalindrome(string: String) -> String {
  if string.count == 0 {
    return ""
  }
  
  var longestPalindrome = ""
  
  for i in 0..<string.count {
    let prefix = string[string.index(string.startIndex, offsetBy: i)]
    let postfix = string[string.index(string.startIndex, offsetBy: string.count - i - 1)]
    
    if prefix == postfix {
      let palindrome = string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: string.count - i - 1)]
      if palindrome.count > longestPalindrome.count {
        longestPalindrome = palindrome
      }
    }
  }
  
  return longestPalindrome + string.reversed()
}
<|file_separator|>
longestPalindrome = palindrome // cannot assign value of type 'Substring' to type 'String'

func makePalindrome(string: String) -> String {
    let reversed = string.reversed()
    let prefix = string.prefix(upTo: string.index(before: string.endIndex))
    let suffix = string.suffix(from: string.index(after: string.startIndex))
    return String(prefix) + String(reversed) + String(suffix)
}
```swift
// Find the shortest palindrome that begins with a supplied string.
// Algorithm idea is simple:
// - Find the longest postfix of supplied string that is a palindrome.
// - Append to the end of the string reverse of a string prefix that comes before the palindromic suffix.
// makePalindrome(string: "") == ""
// makePalindrome(string: "cat") == "catac"
// makePalindrome(string: "cata") == "catac"
func makePalindrome(string: String) -> String {
    let reversed = string.reversed()
    let prefix = string.prefix(upTo: string.index(before: string.endIndex))
    let suffix = string.suffix(from: string.index(after: string.startIndex))
    return String(prefix) + String(reversed) + String(suffix)
}
<|file_separator|>
 // Fatal error: String index is out of bounds

```swift
// Find the shortest palindrome that begins with a supplied string.
// Algorithm idea is simple:
// - Find the longest postfix of supplied string that is a palindrome.
// - Append to the end of the string reverse of a string prefix that comes before the palindromic suffix.
// makePalindrome(string: "") == ""
// makePalindrome(string: "cat") == "catac"
// makePalindrome(string: "cata") == "catac"
func makePalindrome(string: String) -> String {
  var palindrome = string
  var suffix = ""
  var prefix = ""
  var palindromeLength = 0
  var palindromePrefixLength = 0
  var palindromeSuffixLength = 0
  var palindromePrefix = ""
  var palindromeSuffix = ""
  var palindromePrefixIndex = 0
  var palindromeSuffixIndex = 0
  var palindromePrefixIndexLength = 0
  var palindromeSuffixIndexLength = 0
  var palindromePrefixIndexLength2 = 0
  var palindromeSuffixIndexLength2 = 0
  var palindromePrefixIndex2 = 0
  var palindromeSuffixIndex2 = 0
  var palindromePrefixIndex2Length = 0
  var palindromeSuffixIndex2Length = 0
  var palindromePrefixIndex2Length2 = 0
  var palindromeSuffixIndex2Length2 = 0
  var palindromePrefixIndex3 = 0
  var palindromeSuffixIndex3 = 0
  var palindromePrefixIndex3Length = 0
  var palindromeSuffixIndex3Length = 0
  var palindromePrefixIndex3Length2 = 0
  var palindromeSuffixIndex3Length2 = 0
  var palindromePrefixIndex3Length3 = 0
  var palindromeSuffixIndex3Length3 = 0
  var palindromePrefixIndex3Length4 = 0
  var palindromeSuffixIndex3Length4 = 0
  var palindromePrefixIndex3Length5 = 0
  var palindromeSuffixIndex3Length5 = 0
  var palindromePrefixIndex3Length6 = 0
  var palindromeSuffixIndex3Length6 = 0
  var palindromePrefixIndex3Length7 = 0
  var palindromeSuffixIndex3Length7 = 0
  var palindromePrefixIndex3Length8 = 0
  var palindromeSuffixIndex3Length8 = 0
  var palindromePrefixIndex3Length9 = 0
  var palindromeSuffixIndex3Length9 = 0
  var palindromePrefixIndex3Length10 = 0
  var palindromeSuffixIndex3Length10 = 0
  var palindromePrefixIndex3Length11 = 0
  var palindromeSuffixIndex3Length11 = 0
  var palindromePrefixIndex3Length12 = 0
  var palindromeSuffixIndex3Length12 = 0
  var palindromePrefixIndex3Length13 = 0
  var palindromeSuffixIndex3Length13 = 0
  var palindromePrefixIndex3Length14 = 0
  var palindromeSuffixIndex3Length14 = 0
  var palindromePrefixIndex3Length15 = 0
  var palindromeSuffixIndex3Length15 = 0
  var palindromePrefixIndex3Length16 = 0
  var palindromeSuffixIndex3Length16 = 0
  var palindromePrefixIndex3Length17 = 0
  var palindromeSuffixIndex3Length17 = 0
  var palindromePrefixIndex3Length18 = 0
  var palindromeSuffixIndex3Length18 = 0
  var palindromePrefixIndex3Length19 = 0
  var palindromeSuffixIndex3Length19 = 0
  var palindromePrefixIndex3Length20 = 0
  var palindromeSuffixIndex3Length20 = 0
  var palindromePrefixIndex3Length21 = 0
  var palindromeSuffixIndex3Length21 = 0
  var palindromePrefixIndex3Length22 = 0
  var palindromeSuffixIndex3Length22 = 0
  var palindromePrefixIndex3Length23 = 0
  var palindromeSuffixIndex3Length23 = 0
  var palindromePrefixIndex3Length24 = 0
  var palindromeSuffixIndex3Length24 = 0
  var palindromePrefixIndex3Length25 = 0
  var palindromeSuffixIndex3Length25 = 0
  var palindromePrefixIndex3Length26 = 0
  var palindromeSuffixIndex3Length26 = 0
  var palindromePrefixIndex3Length27 = 0
  var palindromeSuffixIndex3Length27 = 0
  var palindromePrefixIndex3Length28 = 0
  var palindromeSuffixIndex3Length28 = 0
  var palindromePrefixIndex3Length29 = 0
  var palindromeSuffixIndex3Length29 = 0
  var palindromePrefixIndex3Length30 = 0
  var palindromeSuffixIndex3Length30 = 0
  var palindromePrefixIndex3Length31 = 0
  var palindromeSuffixIndex3Length31 = 0
  var palindromePrefixIndex3Length32 = 0
  var palindromeSuffixIndex3Length32 = 0
  var palindromePrefixIndex3Length
XCTAssertTrue(makePalindrome(string: "") == "") // cannot find 'makePalindrome' in scope
XCTAssertTrue(makePalindrome(string: "x") == "x") // cannot find 'makePalindrome' in scope
XCTAssertTrue(makePalindrome(string: "xyz") == "xyzyx") // cannot find 'makePalindrome' in scope
XCTAssertTrue(makePalindrome(string: "xyx") == "xyx") // cannot find 'makePalindrome' in scope
XCTAssertTrue(makePalindrome(string: "jerry") == "jerryrrej") // cannot find 'makePalindrome' in scope

func makePalindrome(string: String) -> String {
    let reversed = string.reversed()
    let prefix = string.prefix(string.count - 1)
    let suffix = reversed.suffix(reversed.count - 1)
    return String(prefix) + String(suffix)
}
```swift
// Find the shortest palindrome that begins with a supplied string.
// Algorithm idea is simple:
// - Find the longest postfix of supplied string that is a palindrome.
// - Append to the end of the string reverse of a string prefix that comes before the palindromic suffix.
// makePalindrome(string: "") == ""
// makePalindrome(string: "cat") == "catac"
// makePalindrome(string: "cata") == "catac"
func makePalindrome(string: String) -> String {
    let reversed = string.reversed()
    let prefix = string.prefix(string.count - 1)
    let suffix = reversed.suffix(reversed.count - 1)
    return String(prefix) + String(suffix)
}

// Find the shortest palindrome that begins with a supplied string.
// Algorithm idea is simple:
// - Find the longest postfix of supplied string that is a palindrome.
// - Append to the end of the string reverse of a string prefix that comes before the palindromic suffix.
// - If the palindrome is longer than the supplied string, return the supplied string.
// - If the palindrome is shorter than the supplied string, return the palindrome.
// - If the palindrome is the same length as the supplied string, return the supplied string.
// - If the palindrome is empty, return the supplied string.
// shortestPalindrome(string: "") == ""
// shortestPalindrome(string: "cat") == "cat"
// shortestPalindrome(string: "cata") == "cat"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortestPalindrome(string: "catac") == "catac"
// shortest
 // Fatal error: Can't take a prefix of negative length from a collection

func makePalindrome(string: String) -> String {
    if string.count == 0 {
        return ""
    }
    
    let prefix = string.prefix(string.count / 2)
    let suffix = string.suffix(string.count / 2)
    
    let palindrome = makePalindrome(string: String(suffix.reversed()))
    
    return prefix + palindrome + String(suffix.reversed())
}

func makeShortestPalindrome(string: String) -> String {
    if string.count == 0 {
        return ""
    }
    
    let palindrome = makePalindrome(string: string)
    
    return palindrome.count == string.count ? palindrome : makeShortestPalindrome(string: palindrome)
}
```swift
// Find the shortest palindrome that begins with a supplied string.
// Algorithm idea is simple:
// - Find the longest postfix of supplied string that is a palindrome.
// - Append to the end of the string reverse of a string prefix that comes before the palindromic suffix.
// makePalindrome(string: "") == ""
// makePalindrome(string: "cat") == "catac"
// makePalindrome(string: "cata") == "catac"
func makePalindrome(string: String) -> String {
    if string.count == 0 {
        return ""
    }
    
    let prefix = string.prefix(string.count / 2)
    let suffix = string.suffix(string.count / 2)
    
    let palindrome = makePalindrome(string: String(suffix.reversed()))
    
    return prefix + palindrome + String(suffix.reversed())
}

// Find the shortest palindrome that begins with a supplied string.
// Algorithm idea is simple:
// - Find the longest postfix of supplied string that is a palindrome.
// - Append to the end of the string reverse of a string prefix that comes before the palindromic suffix.
// - Find the shortest palindrome that begins with a supplied string.
// makeShortestPalindrome(string: "") == ""
// makeShortestPalindrome(string: "cat") == "catac"
// makeShortestPalindrome(string: "cata") == "catac"
func makeShortestPalindrome(string: String) -> String {
    if string.count == 0 {
        return ""
    }
    
    let palindrome = makePalindrome(string: string)
    
    return palindrome.count == string.count ? palindrome : makeShortestPalindrome(string: palindrome)
}

// Find the shortest palindrome that begins with a supplied string.
// Algorithm idea is simple:
// - Find the longest postfix of supplied string that is a palindrome.
// - Append to the end of the string reverse of a string prefix that comes before the palindromic suffix.
// - Find the shortest palindrome that begins with a supplied string.
// makeShortestPalindrome(string: "") == ""
// makeShortestPalindrome(string: "cat") == "catac"
// makeShortestPalindrome(string: "cata") == "catac"
func makeShortestPalindrome(string: String) -> String {
    if string.count == 0 {
        return ""
    }
    
    let palindrome = makePalindrome(string: string)
    
    return palindrome.count == string.count ? palindrome : makeShortestPalindrome(string: palindrome)
}

// Find the shortest palindrome that begins with a supplied string.
// Algorithm idea is simple:
// - Find the longest postfix of supplied string that is a palindrome.
// - Append to the end of the string reverse of a string prefix that comes before the palindromic suffix.
// - Find the shortest palindrome that begins with a supplied string.
// makeShortestPalindrome(string: "") == ""
// makeShortestPalindrome(string: "cat") == "catac"
// makeShortestPalindrome(string: "cata") == "catac"
func makeShortestPalindrome(string: String) -> String {
    if string.count == 0 {
        return ""
    }
    
    let palindrome = makePalindrome(string: string)
    
    return palindrome.count == string.count ? palindrome : makeShortestPalindrome(string: palindrome)
}

// Find the shortest palindrome that begins with a supplied string.
// Algorithm idea is simple:
// - Find the longest postfix of supplied string that is a palindrome.
// - Append to the end of the string reverse of a string prefix that comes before the palindromic suffix.
// - Find the shortest palindrome that begins with a supplied string.
// makeShortestPalindrome(string: "") == ""
// makeShortestPalindrome(string: "cat") == "catac"
// makeShortestPalindrome(string: "cata") == "catac"
func makeShortestPalindrome(string: String) -> String {
    if string.count == 0 {
        return ""
    }
    
    let palindrome = makePalindrome(string: string)
    
    return palindrome.count == string.count ? palindrome : makeShortestPalindrome(string: palindrome)
}

// Find the shortest palindrome that begins with a supplied string.
// Algorithm idea is simple:
// - Find the longest postfix of supplied string that is a palindrome.
// - Append to the end of the string reverse of a string prefix that comes before the palindromic suffix.
// - Find the shortest palindrome that begins with a supplied string.
// makeShortestPalindrome(string: "") == ""
// makeShortestPalindrome(string: "cat") == "catac"
// makeShortestPalindrome(string: "cata") == "catac"
func makeShortestPalindrome(string: String) -> String {
    if string.count == 0 {
        return ""
    }
    
    let palindrome = makePalindrome(string: string)
    
    return palindrome.count == string.count ? palindrome : makeShortestPalindrome(string: palindrome)
}

// Find the shortest palindrome that begins with a supplied string.
 // XCTAssertTrue failed

func makePalindrome(string: String) -> String {
  let reversed = string.reversed()
  let palindrome = string + String(reversed)
  return palindrome
}
```swift
// Find the shortest palindrome that begins with a supplied string.
// Algorithm idea is simple:
// - Find the longest postfix of supplied string that is a palindrome.
// - Append to the end of the string reverse of a string prefix that comes before the palindromic suffix.
// makePalindrome(string: "") == ""
// makePalindrome(string: "cat") == "catac"
// makePalindrome(string: "cata") == "catac"
func makePalindrome(string: String) -> String {
  let reversed = string.reversed()
  let palindrome = string + String(reversed)
  return palindrome
}
<|file_separator|>
 // XCTAssertTrue failed

func makePalindrome(string: String) -> String {
  if string.count == 0 {
    return ""
  }
  
  var longestPalindrome = ""
  
  for i in 0..<string.count {
    let prefix = string[string.index(string.startIndex, offsetBy: i)]
    let postfix = string[string.index(string.startIndex, offsetBy: string.count - i - 1)]
    
    if prefix == postfix {
      let palindrome = prefix + makePalindrome(string: string[string.index(string.startIndex, offsetBy: i + 1)..<string.index(string.startIndex, offsetBy: string.count - i - 1)]) + postfix
      if palindrome.count > longestPalindrome.count {
        longestPalindrome = palindrome
      }
    }
  }
  
  return longestPalindrome
}
```swift
// Find the shortest palindrome that begins with a supplied string.
// Algorithm idea is simple:
// - Find the longest postfix of supplied string that is a palindrome.
// - Append to the end of the string reverse of a string prefix that comes before the palindromic suffix.
// makePalindrome(string: "") == ""
// makePalindrome(string: "cat") == "catac"
// makePalindrome(string: "cata") == "catac"
func makePalindrome(string: String) -> String {
  if string.count == 0 {
    return ""
  }
  
  var longestPalindrome = ""
  
  for i in 0..<string.count {
    let prefix = string[string.index(string.startIndex, offsetBy: i)]
    let postfix = string[string.index(string.startIndex, offsetBy: string.count - i - 1)]
    
    if prefix == postfix {
      let palindrome = prefix + makePalindrome(string: string[string.index(string.startIndex, offsetBy: i + 1)..<string.index(string.startIndex, offsetBy: string.count - i - 1)]) + postfix
      if palindrome.count > longestPalindrome.count {
        longestPalindrome = palindrome
      }
    }
  }
  
  return longestPalindrome
}
<|file_separator|>
let palindrome = prefix + makePalindrome(string: string[string.index(string.startIndex, offsetBy: i + 1)..<string.index(string.startIndex, offsetBy: string.count - i - 1)]) + postfix // cannot convert value of type 'Character' to expected argument type 'String'
let palindrome = prefix + makePalindrome(string: string[string.index(string.startIndex, offsetBy: i + 1)..<string.index(string.startIndex, offsetBy: string.count - i - 1)]) + postfix // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent
let palindrome = prefix + makePalindrome(string: string[string.index(string.startIndex, offsetBy: i + 1)..<string.index(string.startIndex, offsetBy: string.count - i - 1)]) + postfix // cannot convert value of type 'Character' to expected argument type 'String'

func makePalindrome(string: String) -> String {
    let string = string.lowercased()
    let reversed = string.reversed()
    let palindrome = string + String(reversed)
    return palindrome
}

func makeShortestPalindrome(string: String) -> String {
    let palindrome = makePalindrome(string: string)
    if palindrome == string {
        return palindrome
    }
    let reversed = palindrome.reversed()
    let shortestPalindrome = String(reversed) + palindrome
    return shortestPalindrome
}
```swift
// Find the shortest palindrome that begins with a supplied string.
// Algorithm idea is simple:
// - Find the longest postfix of supplied string that is a palindrome.
// - Append to the end of the string reverse of a string prefix that comes before the palindromic suffix.
// makePalindrome(string: "") == ""
// makePalindrome(string: "cat") == "catac"
// makePalindrome(string: "cata") == "catac"
func makePalindrome(string: String) -> String {
    let string = string.lowercased()
    let reversed = string.reversed()
    let palindrome = string + String(reversed)
    return palindrome
}

// Find the shortest palindrome that begins with a supplied string.
// Algorithm idea is simple:
// - Find the longest postfix of supplied string that is a palindrome.
// - Append to the end of the string reverse of a string prefix that comes before the palindromic suffix.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// makeShortestPalindrome(string: "") == ""
// makeShortestPalindrome(string: "cat") == "cat"
// makeShortestPalindrome(string: "cata") == "catac"
func makeShortestPalindrome(string: String) -> String {
    let palindrome = makePalindrome(string: string)
    if palindrome == string {
        return palindrome
    }
    let reversed = palindrome.reversed()
    let shortestPalindrome = String(reversed) + palindrome
    return shortestPalindrome
}

// Find the shortest palindrome that begins with a supplied string.
// Algorithm idea is simple:
// - Find the longest postfix of supplied string that is a palindrome.
// - Append to the end of the string reverse of a string prefix that comes before the palindromic suffix.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome, return it.
// - Otherwise, return the shortest palindrome that begins with a supplied string.
// - If the supplied string is a palindrome,
 // XCTAssertTrue failed

func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[i] == b[i] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}
```swift
// Input are two strings a and b consisting only of 1s and 0s.
// Perform binary XOR on these inputs and return result also as a string.
// stringXor(a: "010", b: "110") == "100"
func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[i] == b[i] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}
<|file_separator|>
if a[i] == b[i] { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if a[i] == b[i] { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[i] == b[i] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}
```swift
// Input are two strings a and b consisting only of 1s and 0s.
// Perform binary XOR on these inputs and return result also as a string.
// stringXor(a: "010", b: "110") == "100"
func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[i] == b[i] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}
<|file_separator|>
if a[i] == b[i] { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if a[i] == b[i] { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[a.index(a.startIndex, offsetBy: i)] == b[b.index(b.startIndex, offsetBy: i)] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}
```swift
// Input are two strings a and b consisting only of 1s and 0s.
// Perform binary XOR on these inputs and return result also as a string.
// stringXor(a: "010", b: "110") == "100"
func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[a.index(a.startIndex, offsetBy: i)] == b[b.index(b.startIndex, offsetBy: i)] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}
<|file_separator|>

func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[a.index(a.startIndex, offsetBy: i)] == b[b.index(b.startIndex, offsetBy: i)] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}
```swift
// Input are two strings a and b consisting only of 1s and 0s.
// Perform binary XOR on these inputs and return result also as a string.
// stringXor(a: "010", b: "110") == "100"
func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[a.index(a.startIndex, offsetBy: i)] == b[b.index(b.startIndex, offsetBy: i)] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}
<|file_separator|>

func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[a.index(a.startIndex, offsetBy: i)] == b[b.index(b.startIndex, offsetBy: i)] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}

func countOnes(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "1" {
            count += 1
        }
    }
    return count
}

func countZeros(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "0" {
            count += 1
        }
    }
    return count
}
```swift
// Input are two strings a and b consisting only of 1s and 0s.
// Perform binary XOR on these inputs and return result also as a string.
// stringXor(a: "010", b: "110") == "100"
func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[a.index(a.startIndex, offsetBy: i)] == b[b.index(b.startIndex, offsetBy: i)] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}

// Input is a string of 1s and 0s.
// Return the number of 1s in the string.
// countOnes("101101") == 3
func countOnes(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "1" {
            count += 1
        }
    }
    return count
}

// Input is a string of 1s and 0s.
// Return the number of 0s in the string.
// countZeros("101101") == 2
func countZeros(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "0" {
            count += 1
        }
    }
    return count
}

// Input is a string of 1s and 0s.
// Return the number of 1s in the string.
// countZeros("101101") == 2
func countZeros(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "0" {
            count += 1
        }
    }
    return count
}

// Input is a string of 1s and 0s.
// Return the number of 1s in the string.
// countZeros("101101") == 2
func countZeros(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "0" {
            count += 1
        }
    }
    return count
}

// Input is a string of 1s and 0s.
// Return the number of 1s in the string.
// countZeros("101101") == 2
func countZeros(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "0" {
            count += 1
        }
    }
    return count
}

// Input is a string of 1s and 0s.
// Return the number of 1s in the string.
// countZeros("101101") == 2
func countZeros(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "0" {
            count += 1
        }
    }
    return count
}

// Input is a string of 1s and 0s.
// Return the number of 1s in the string.
// countZeros("101101") == 2
func countZeros(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "0" {
            count += 1
        }
    }
    return count
}

// Input is a string of 1s and 0s.
// Return the number of 1s in the string.
// countZeros("101101") == 2
func countZeros(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "0" {
            count += 1
        }
    }
    return count
}

// Input is a string of 1s and 0s.
// Return the number

func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[a.index(a.startIndex, offsetBy: i)] == b[b.index(b.startIndex, offsetBy: i)] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}
```swift
// Input are two strings a and b consisting only of 1s and 0s.
// Perform binary XOR on these inputs and return result also as a string.
// stringXor(a: "010", b: "110") == "100"
func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[a.index(a.startIndex, offsetBy: i)] == b[b.index(b.startIndex, offsetBy: i)] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}
<|file_separator|>

func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[a.index(a.startIndex, offsetBy: i)] == b[b.index(b.startIndex, offsetBy: i)] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}
```swift
// Input are two strings a and b consisting only of 1s and 0s.
// Perform binary XOR on these inputs and return result also as a string.
// stringXor(a: "010", b: "110") == "100"
func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[a.index(a.startIndex, offsetBy: i)] == b[b.index(b.startIndex, offsetBy: i)] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}
<|file_separator|>

func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[i] == b[i] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}
```swift
// Input are two strings a and b consisting only of 1s and 0s.
// Perform binary XOR on these inputs and return result also as a string.
// stringXor(a: "010", b: "110") == "100"
func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[i] == b[i] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}
<|file_separator|>
if a[i] == b[i] { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if a[i] == b[i] { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[a.index(a.startIndex, offsetBy: i)] == b[b.index(b.startIndex, offsetBy: i)] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}
```swift
// Input are two strings a and b consisting only of 1s and 0s.
// Perform binary XOR on these inputs and return result also as a string.
// stringXor(a: "010", b: "110") == "100"
func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[a.index(a.startIndex, offsetBy: i)] == b[b.index(b.startIndex, offsetBy: i)] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}
<|file_separator|>

func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[a.index(a.startIndex, offsetBy: i)] == b[b.index(b.startIndex, offsetBy: i)] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}
```swift
// Input are two strings a and b consisting only of 1s and 0s.
// Perform binary XOR on these inputs and return result also as a string.
// stringXor(a: "010", b: "110") == "100"
func stringXor(a: String, b: String) -> String {
    var result = ""
    for i in 0..<a.count {
        if a[a.index(a.startIndex, offsetBy: i)] == b[b.index(b.startIndex, offsetBy: i)] {
            result += "0"
        } else {
            result += "1"
        }
    }
    return result
}
<|file_separator|>

func longest(strings: [String]) -> String? {
    if strings.count == 0 {
        return nil
    }
    var longest = strings[0]
    for i in 1..<strings.count {
        if strings[i].count > longest.count {
            longest = strings[i]
        }
    }
    return longest
}

func sum(ints: [Int]) -> Int {
    var sum = 0
    for i in ints {
        if i > 0 {
            sum += i
        }
    }
    return sum
}

func sum(ints: [Int]) -> Int {
    var sum = 0
    for i in ints {
        if i < 0 {
            sum += i
        }
    }
    return sum
}

func sum(ints: [Int]) -> Int {
    var sum = 0
    for i in 2..<ints.count {
        sum += ints[i]
    }
    return sum
}

func sum(ints: [Int]) -> Int {
    var sum = 0
    for i in 0..<ints.count-2 {
        sum += ints[i]
    }
    return sum
}
```swift
// Out of array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest(strings: [String]) -> String? {
    if strings.count == 0 {
        return nil
    }
    var longest = strings[0]
    for i in 1..<strings.count {
        if strings[i].count > longest.count {
            longest = strings[i]
        }
    }
    return longest
}

// Given an array of integers, return the sum of all the positive integers.
// sum(ints: []) == 0
// sum(ints: [1, 2, 3, 4, 5]) == 15
// sum(ints: [-1, -2, -3, -4, -5]) == 0
func sum(ints: [Int]) -> Int {
    var sum = 0
    for i in ints {
        if i > 0 {
            sum += i
        }
    }
    return sum
}

// Given an array of integers, return the sum of all the negative integers.
// sum(ints: []) == 0
// sum(ints: [1, 2, 3, 4, 5]) == 0
// sum(ints: [-1, -2, -3, -4, -5]) == -15
func sum(ints: [Int]) -> Int {
    var sum = 0
    for i in ints {
        if i < 0 {
            sum += i
        }
    }
    return sum
}

// Given an array of integers, return the sum of all the integers except for the first two.
// sum(ints: [1, 2, 3, 4, 5]) == 10
// sum(ints: [1, 2, 3, 4, 5, 6]) == 15
// sum(ints: [1, 2, 3, 4, 5, 6, 7]) == 21
func sum(ints: [Int]) -> Int {
    var sum = 0
    for i in 2..<ints.count {
        sum += ints[i]
    }
    return sum
}

// Given an array of integers, return the sum of all the integers except for the last two.
// sum(ints: [1, 2, 3, 4, 5]) == 9
// sum(ints: [1, 2, 3, 4, 5, 6]) == 15
// sum(ints: [1, 2, 3, 4, 5, 6, 7]) == 21
func sum(ints: [Int]) -> Int {
    var sum = 0
    for i in 0..<ints.count-2 {
        sum += ints[i]
    }
    return sum
}

// Given an array of integers, return the sum of all the integers except for the last two.
// sum(ints: [1, 2, 3, 4, 5]) == 9
// sum(ints: [1, 2, 3, 4, 5, 6]) == 15
// sum(ints: [1, 2, 3, 4, 5, 6, 7]) == 21
func sum(ints: [Int]) -> Int {
    var sum = 0
    for i in 0..<ints.count-2 {
        sum += ints[i]
    }
    return sum
}

// Given an array of integers, return the sum of all the integers except for the last two.
// sum(ints: [1, 2, 3, 4, 5]) == 9
// sum(ints: [1, 2, 3, 4, 5, 6]) == 15
// sum(ints: [1, 2, 3, 4, 5, 6, 7]) == 21
func sum(ints: [Int]) -> Int {
    var sum = 0
    for i in 0..<ints.count-2 {
        sum += ints[i]
    }
    return sum
}

// Given an array of integers, return the sum of all the integers except for the last two.
// sum(ints: [1, 2, 3, 4, 5]) == 9
// sum(ints: [1, 2, 3, 4, 5, 6]) == 15
// sum(ints: [1, 2
func sum(ints: [Int]) -> Int { // invalid redeclaration of 'sum(ints:)'
func sum(ints: [Int]) -> Int { // invalid redeclaration of 'sum(ints:)'
func sum(ints: [Int]) -> Int { // invalid redeclaration of 'sum(ints:)'

func longest(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for i in 1..<strings.count {
    if strings[i].count > longest.count {
      longest = strings[i]
    }
  }
  return longest
}

func sum(ints: [Int]) -> Int {
  var sum = 0
  for i in ints {
    sum += i
  }
  return sum
}

func sum(ints: [Int]) -> Int {
  return ints.reduce(0, +)
}

func sum(ints: [Int]) -> Int {
  return ints.reduce(0, { $0 + $1 })
}
```swift
// Out of array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for i in 1..<strings.count {
    if strings[i].count > longest.count {
      longest = strings[i]
    }
  }
  return longest
}

// Given an array of integers, return the sum of all the elements.
// sum(ints: []) == 0
// sum(ints: [42]) == 42
// sum(ints: [1, 2, 3]) == 6
func sum(ints: [Int]) -> Int {
  var sum = 0
  for i in ints {
    sum += i
  }
  return sum
}

// Given an array of integers, return the sum of all the elements.
// sum(ints: []) == 0
// sum(ints: [42]) == 42
// sum(ints: [1, 2, 3]) == 6
func sum(ints: [Int]) -> Int {
  return ints.reduce(0, +)
}

// Given an array of integers, return the sum of all the elements.
// sum(ints: []) == 0
// sum(ints: [42]) == 42
// sum(ints: [1, 2, 3]) == 6
func sum(ints: [Int]) -> Int {
  return ints.reduce(0, { $0 + $1 })
}

// Given an array of integers, return the sum of all the elements.
// sum(ints: []) == 0
// sum(ints: [42]) == 42
// sum(ints: [1, 2, 3]) == 6
func sum(ints: [Int]) -> Int {
  return ints.reduce(0, { $0 + $1 })
}

// Given an array of integers, return the sum of all the elements.
// sum(ints: []) == 0
// sum(ints: [42]) == 42
// sum(ints: [1, 2, 3]) == 6
func sum(ints: [Int]) -> Int {
  return ints.reduce(0, { $0 + $1 })
}

// Given an array of integers, return the sum of all the elements.
// sum(ints: []) == 0
// sum(ints: [42]) == 42
// sum(ints: [1, 2, 3]) == 6
func sum(ints: [Int]) -> Int {
  return ints.reduce(0, { $0 + $1 })
}

// Given an array of integers, return the sum of all the elements.
// sum(ints: []) == 0
// sum(ints: [42]) == 42
// sum(ints: [1, 2, 3]) == 6
func sum(ints: [Int]) -> Int {
  return ints.reduce(0, { $0 + $1 })
}

// Given an array of integers, return the sum of all the elements.
// sum(ints: []) == 0
// sum(ints: [42]) == 42
// sum(ints: [1, 2, 3]) == 6
func sum(ints: [Int]) -> Int {
  return ints.reduce(0, { $0 + $1 })
}

// Given an array of integers, return the sum of all the elements.
// sum(ints: []) == 0
// sum(ints: [42]) == 42
// sum(ints: [1, 2, 3]) == 6
func sum(ints: [Int]) -> Int {
  return ints.reduce(0, { $0 + $1 })
}

// Given an array of integers, return the sum of all the elements.
// sum(ints: []) == 0
// sum(ints: [42]) == 42
// sum(ints: [1, 2, 3]) == 6
func sum(ints: [Int]) -> Int {
  return ints.reduce(0, { $0 + $1 })
}

// Given an array of integers, return the sum of all the elements.
// sum(ints: []) == 0
// sum(ints: [42]) == 42
// sum(ints: [1, 2, 3]) == 6
func sum(ints: [Int]) -> Int {
func sum(ints: [Int]) -> Int { // invalid redeclaration of 'sum(ints:)'
func sum(ints: [Int]) -> Int { // invalid redeclaration of 'sum(ints:)'

func longest(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for i in 1..<strings.count {
    if strings[i].count > longest.count {
      longest = strings[i]
    }
  }
  return longest
}

func longest2(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for i in 1..<strings.count {
    if strings[i].count > longest.count {
      longest = strings[i]
    }
  }
  return longest
}

func longest3(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for i in 1..<strings.count {
    if strings[i].count > longest.count {
      longest = strings[i]
    }
  }
  return longest
}

func longest4(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for i in 1..<strings.count {
    if strings[i].count > longest.count {
      longest = strings[i]
    }
  }
  return longest
}

func longest5(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for i in 1..<strings.count {
    if strings[i].count > longest.count {
      longest = strings[i]
    }
  }
  return longest
}

func longest6(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for i in 1..<strings.count {
    if strings[i].count > longest.count {
      longest = strings[i]
    }
  }
  return longest
}
```swift
// Out of array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for i in 1..<strings.count {
    if strings[i].count > longest.count {
      longest = strings[i]
    }
  }
  return longest
}

// Given an array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest2(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for i in 1..<strings.count {
    if strings[i].count > longest.count {
      longest = strings[i]
    }
  }
  return longest
}

// Given an array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest3(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for i in 1..<strings.count {
    if strings[i].count > longest.count {
      longest = strings[i]
    }
  }
  return longest
}

// Given an array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest4(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for i in 1..<strings.count {
    if strings[i].count > longest.count {
      longest = strings[i]
    }
  }
  return longest
}

// Given an array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest5(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for i in 1..<strings.count {
    if strings[i].count > longest.count {
      longest = strings[i]
    }
  }
  return longest
}

// Given an array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest6(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for i in 1..<strings.count {
    if strings[i].count > longest.count {
      longest = strings[i]
    }
  }
  return longest
}

// Given an array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest7(strings

func longest(strings: [String]) -> String? {
    if strings.count == 0 {
        return nil
    }
    var longest = strings[0]
    for string in strings {
        if string.count > longest.count {
            longest = string
        }
    }
    return longest
}

func first(string: String) -> Character? {
    if string.count == 0 {
        return nil
    }
    return string[string.startIndex]
}

func first(strings: [String]) -> String? {
    if strings.count == 0 {
        return nil
    }
    return strings[0]
}

func last(strings: [String]) -> String? {
    if strings.count == 0 {
        return nil
    }
    return strings[strings.count - 1]
}

func get(strings: [String], index: Int) -> String? {
    if strings.count == 0 {
        return nil
    }
    return strings[index]
}

func get(strings: [String], index: Int) -> String? {
    if strings.count == 0 {
        return nil
    }
    if index < 0 {
        return nil
    }
    return strings[index]
}

func get(strings: [String], index: Int) -> String? {
    if strings.count == 0 {
        return nil
    }
    if index < 0 || index >= strings.count {
        return nil
    }
    return strings[index]
}
```swift
// Out of array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest(strings: [String]) -> String? {
    if strings.count == 0 {
        return nil
    }
    var longest = strings[0]
    for string in strings {
        if string.count > longest.count {
            longest = string
        }
    }
    return longest
}

// Given a string, return the first character. If the string is empty, return nil.
// first(string: "") == nil
// first(string: "abc") == "a"
func first(string: String) -> Character? {
    if string.count == 0 {
        return nil
    }
    return string[string.startIndex]
}

// Given an array of strings, return the first one. If the array is empty, return nil.
// first(strings: [] as [String]) == nil
// first(strings: ["a", "b", "c"]) == "a"
func first(strings: [String]) -> String? {
    if strings.count == 0 {
        return nil
    }
    return strings[0]
}

// Given an array of strings, return the last one. If the array is empty, return nil.
// last(strings: [] as [String]) == nil
// last(strings: ["a", "b", "c"]) == "c"
func last(strings: [String]) -> String? {
    if strings.count == 0 {
        return nil
    }
    return strings[strings.count - 1]
}

// Given an array of strings, return the one at the given index. If the array is empty, return nil.
// get(strings: [] as [String], index: 0) == nil
// get(strings: ["a", "b", "c"], index: 1) == "b"
func get(strings: [String], index: Int) -> String? {
    if strings.count == 0 {
        return nil
    }
    return strings[index]
}

// Given an array of strings, return the one at the given index. If the array is empty, return nil.
// get(strings: ["a", "b", "c"], index: -1) == nil
// get(strings: ["a", "b", "c"], index: 3) == nil
func get(strings: [String], index: Int) -> String? {
    if strings.count == 0 {
        return nil
    }
    if index < 0 {
        return nil
    }
    return strings[index]
}

// Given an array of strings, return the one at the given index. If the array is empty, return nil.
// get(strings: ["a", "b", "c"], index: 3) == nil
// get(strings: ["a", "b", "c"], index: 3) == nil
func get(strings: [String], index: Int) -> String? {
    if strings.count == 0 {
        return nil
    }
    if index < 0 || index >= strings.count {
        return nil
    }
    return strings[index]
}

// Given an array of strings, return the one at the given index. If the array is empty, return nil.
// get(strings: ["a", "b", "c"], index: 3) == nil
// get(strings: ["a", "b", "c"], index: 3) == nil
func get(strings: [String], index: Int) -> String? {
    if strings.count == 0 {
        return nil
    }
    if index < 0 || index >= strings.count {
        return nil
    }
    return strings[index]
}

// Given an array of strings, return the one at the given index. If the array is empty, return nil.
// get(strings: ["a", "b", "c"], index: 3) == nil
// get(strings: ["a", "b", "c"], index: 3) == nil
func get(strings: [String], index: Int) -> String? {
    if strings.count == 0 {
        return nil
    }
    if index < 0 || index >= strings.count {
        return nil
    }
    return strings[index]
}

// Given an array of strings, return the one at the given index. If the array is empty, return nil.
// get(strings: ["a", "b", "c"], index: 3) == nil
// get(strings: ["
func get(strings: [String], index: Int) -> String? { // invalid redeclaration of 'get(strings:index:)'
func get(strings: [String], index: Int) -> String? { // invalid redeclaration of 'get(strings:index:)'

func longest(strings: [String]) -> String? {
    if strings.isEmpty {
        return nil
    }
    var longest = strings[0]
    for i in 1..<strings.count {
        if strings[i].count > longest.count {
            longest = strings[i]
        }
    }
    return longest
}
```swift
// Out of array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest(strings: [String]) -> String? {
    if strings.isEmpty {
        return nil
    }
    var longest = strings[0]
    for i in 1..<strings.count {
        if strings[i].count > longest.count {
            longest = strings[i]
        }
    }
    return longest
}
<|file_separator|>

func longest(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for string in strings {
    if string.count > longest.count {
      longest = string
    }
  }
  return longest
}
```swift
// Out of array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for string in strings {
    if string.count > longest.count {
      longest = string
    }
  }
  return longest
}

// Given an array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for string in strings {
    if string.count > longest.count {
      longest = string
    }
  }
  return longest
}

// Given an array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for string in strings {
    if string.count > longest.count {
      longest = string
    }
  }
  return longest
}

// Given an array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for string in strings {
    if string.count > longest.count {
      longest = string
    }
  }
  return longest
}

// Given an array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for string in strings {
    if string.count > longest.count {
      longest = string
    }
  }
  return longest
}

// Given an array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for string in strings {
    if string.count > longest.count {
      longest = string
    }
  }
  return longest
}

// Given an array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for string in strings {
    if string.count > longest.count {
      longest = string
    }
  }
  return longest
}

func longest(strings: [String]) -> String? {
    if strings.isEmpty {
        return nil
    }
    
    var longest = strings[0]
    
    for i in 1..<strings.count {
        if strings[i].count > longest.count {
            longest = strings[i]
        }
    }
    
    return longest
}
```swift
// Out of array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest(strings: [String]) -> String? {
    if strings.isEmpty {
        return nil
    }
    
    var longest = strings[0]
    
    for i in 1..<strings.count {
        if strings[i].count > longest.count {
            longest = strings[i]
        }
    }
    
    return longest
}
<|file_separator|>

func longest(strings: [String]) -> String? {
    if strings.isEmpty {
        return nil
    }
    
    var longest = strings[0]
    
    for string in strings {
        if string.count > longest.count {
            longest = string
        }
    }
    
    return longest
}
```swift
// Out of array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest(strings: [String]) -> String? {
    if strings.isEmpty {
        return nil
    }
    
    var longest = strings[0]
    
    for string in strings {
        if string.count > longest.count {
            longest = string
        }
    }
    
    return longest
}
<|file_separator|>

func longest(strings: [String]) -> String? {
    if strings.count == 0 {
        return nil
    }
    var longest = strings[0]
    for i in 1..<strings.count {
        if strings[i].count > longest.count {
            longest = strings[i]
        }
    }
    return longest
}
```swift
// Out of array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest(strings: [String]) -> String? {
    if strings.count == 0 {
        return nil
    }
    var longest = strings[0]
    for i in 1..<strings.count {
        if strings[i].count > longest.count {
            longest = strings[i]
        }
    }
    return longest
}
<|file_separator|>

func longest(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for i in 1..<strings.count {
    if strings[i].count > longest.count {
      longest = strings[i]
    }
  }
  return longest
}

func sum_two_largest(ints: [Int]) -> Int {
  var ints = ints
  ints.sort()
  return ints[ints.count - 2] + ints[ints.count - 1]
}

func sum_two_smallest(ints: [Int]) -> Int {
  var ints = ints
  ints.sort()
  return ints[0] + ints[1]
}
```swift
// Out of array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return nil in case the input array is empty.
// longest(strings: [] as [String]) == nil
// longest(strings: ["a", "b", "c"]) == "a"
// longest(strings: ["a", "bb", "ccc"]) == "ccc"
func longest(strings: [String]) -> String? {
  if strings.isEmpty {
    return nil
  }
  var longest = strings[0]
  for i in 1..<strings.count {
    if strings[i].count > longest.count {
      longest = strings[i]
    }
  }
  return longest
}

// Given an array of integers, return the sum of the two largest integers.
// sum_two_largest(ints: [1, 2, 3]) == 5
// sum_two_largest(ints: [1, 3, 4]) == 7
func sum_two_largest(ints: [Int]) -> Int {
  var ints = ints
  ints.sort()
  return ints[ints.count - 2] + ints[ints.count - 1]
}

// Given an array of integers, return the sum of the two smallest integers.
// sum_two_smallest(ints: [1, 2, 3]) == 3
// sum_two_smallest(ints: [1, 3, 4]) == 3
func sum_two_smallest(ints: [Int]) -> Int {
  var ints = ints
  ints.sort()
  return ints[0] + ints[1]
}

// Given an array of integers, return the sum of the two smallest integers.
// sum_two_smallest(ints: [1, 2, 3]) == 3
// sum_two_smallest(ints: [1, 3, 4]) == 3
func sum_two_smallest(ints: [Int]) -> Int {
  var ints = ints
  ints.sort()
  return ints[0] + ints[1]
}

// Given an array of integers, return the sum of the two largest integers.
// sum_two_largest(ints: [1, 2, 3]) == 5
// sum_two_largest(ints: [1, 3, 4]) == 7
func sum_two_largest(ints: [Int]) -> Int {
  var ints = ints
  ints.sort()
  return ints[ints.count - 2] + ints[ints.count - 1]
}

// Given an array of integers, return the sum of the two smallest integers.
// sum_two_smallest(ints: [1, 2, 3]) == 3
// sum_two_smallest(ints: [1, 3, 4]) == 3
func sum_two_smallest(ints: [Int]) -> Int {
  var ints = ints
  ints.sort()
  return ints[0] + ints[1]
}

// Given an array of integers, return the sum of the two largest integers.
// sum_two_largest(ints: [1, 2, 3]) == 5
// sum_two_largest(ints: [1, 3, 4]) == 7
func sum_two_largest(ints: [Int]) -> Int {
  var ints = ints
  ints.sort()
  return ints[ints.count - 2] + ints[ints.count - 1]
}

// Given an array of integers, return the sum of the two smallest integers.
// sum_two_smallest(ints: [1, 2, 3]) == 3
// sum_two_smallest(ints: [1, 3, 4]) == 3
func sum_two_smallest(ints: [Int]) -> Int {
  var ints = ints
  ints.sort()
  return ints[0] + ints[1]
}

// Given an array of integers, return the sum of the two largest integers.
// sum_two_largest(ints: [1, 2, 3]) == 5
// sum_two_largest(ints: [1, 3, 4]) == 7
func sum_two_largest(ints: [Int]) -> Int {
  var ints = ints
  ints.sort()
  return ints[ints.count - 2] + ints[ints.count - 1]
}

// Given an array of integers, return the sum of the two smallest integers.
// sum_two_smallest(ints: [1, 2, 3]) == 3
// sum_two_smallest(ints: [1, 3, 4]) == 3
func sum_two_smallest(ints: [Int]) -> Int {
  var ints = ints
  ints.sort()
  return

func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if a == b {
        return a
    }
    if a > b {
        return greatestCommonDivisor(a: a - b, b: b)
    }
    return greatestCommonDivisor(a: a, b: b - a)
}

func leastCommonMultiple(a: Int, b: Int) -> Int {
    return a * b / greatestCommonDivisor(a: a, b: b)
}

func permutations<T>(_ list: [T]) -> [[T]] {
    if list.count == 1 {
        return [list]
    }
    var result = [[T]]()
    for i in 0..<list.count {
        let head = list[i]
        let tail = list[0..<i] + list[i+1..<list.count]
        for permutation in permutations(tail) {
            result.append([head] + permutation)
        }
    }
    return result
}

func combinations<T>(_ list: [T]) -> [[T]] {
    if list.count == 1 {
        return [list]
    }
    var result = [[T]]()
    for i in 0..<list.count {
        let head = list[i]
        let tail = list[0..<i] + list[i+1..<list.count]
        for permutation in combinations(tail) {
            result.append([head] + permutation)
        }
    }
    return result
}
```swift
// Return a greatest common divisor of two integers a and b
// greatestCommonDivisor(a: 3, b: 5) == 1
// greatestCommonDivisor(a: 25, b: 15) == 5
func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if a == b {
        return a
    }
    if a > b {
        return greatestCommonDivisor(a: a - b, b: b)
    }
    return greatestCommonDivisor(a: a, b: b - a)
}

// Return a least common multiple of two integers a and b
// leastCommonMultiple(a: 3, b: 5) == 15
// leastCommonMultiple(a: 25, b: 15) == 25
func leastCommonMultiple(a: Int, b: Int) -> Int {
    return a * b / greatestCommonDivisor(a: a, b: b)
}

// Return a list of all permutations of a given list
// permutations([1, 2, 3]) == [[1, 2, 3], [1, 3, 2], [2, 1, 3], [2, 3, 1], [3, 1, 2], [3, 2, 1]]
func permutations<T>(_ list: [T]) -> [[T]] {
    if list.count == 1 {
        return [list]
    }
    var result = [[T]]()
    for i in 0..<list.count {
        let head = list[i]
        let tail = list[0..<i] + list[i+1..<list.count]
        for permutation in permutations(tail) {
            result.append([head] + permutation)
        }
    }
    return result
}

// Return a list of all combinations of a given list
// combinations([1, 2, 3]) == [[1, 2, 3], [1, 3, 2], [2, 1, 3], [2, 3, 1], [3, 1, 2], [3, 2, 1]]
func combinations<T>(_ list: [T]) -> [[T]] {
    if list.count == 1 {
        return [list]
    }
    var result = [[T]]()
    for i in 0..<list.count {
        let head = list[i]
        let tail = list[0..<i] + list[i+1..<list.count]
        for permutation in combinations(tail) {
            result.append([head] + permutation)
        }
    }
    return result
}

// Return a list of all permutations of a given list
// permutations([1, 2, 3]) == [[1, 2, 3], [1, 3, 2], [2, 1, 3], [2, 3, 1], [3, 1, 2], [3, 2, 1]]
func permutations<T>(_ list: [T]) -> [[T]] {
    if list.count == 1 {
        return [list]
    }
    var result = [[T]]()
    for i in 0..<list.count {
        let head = list[i]
        let tail = list[0..<i] + list[i+1..<list.count]
        for permutation in permutations(tail) {
            result.append([head] + permutation)
        }
    }
    return result
}

// Return a list of all combinations of a given list
// combinations([1, 2, 3]) == [[1, 2, 3], [1, 3, 2], [2, 1, 3], [2, 3, 1], [3, 1, 2], [3, 2, 1]]
func combinations<T>(_ list: [T]) -> [[T]] {
    if list.count == 1 {
        return [list]
    }
    var result = [[T]]()
    for i in 0..<list.count {
        let head = list[i]
        let tail = list[0..<i] + list[i+1..<list.count]
        for permutation in combinations(tail) {
            result.append([head] + permutation)
        }
    }
    return result
}

// Return a list of all permutations of a given list
// permutations([1, 2, 3]) == [[1, 2, 3], [1, 3, 2], [2, 1, 3], [2, 3, 1], [3, 1, 2], [3
for permutation in permutations(tail) { // cannot convert value of type 'ArraySlice<T>' to expected argument type '[ArraySlice<T>]'
for permutation in combinations(tail) { // cannot convert value of type 'ArraySlice<T>' to expected argument type '[ArraySlice<T>]'

func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if a == 0 {
        return b
    }
    if b == 0 {
        return a
    }
    if a == b {
        return a
    }
    if a > b {
        return greatestCommonDivisor(a: a - b, b: b)
    }
    return greatestCommonDivisor(a: a, b: b - a)
}

func leastCommonMultiple(a: Int, b: Int) -> Int {
    return a * b / greatestCommonDivisor(a: a, b: b)
}

func permutations(array: [Int]) -> Int {
    if array.count == 1 {
        return 1
    }
    var result = 1
    for i in 1...array.count {
        result *= i
    }
    return result
}

func combinations(array: [Int]) -> Int {
    if array.count == 1 {
        return 1
    }
    var result = 1
    for i in 1...array.count {
        result *= i
    }
    return result
}
```swift
// Return a greatest common divisor of two integers a and b
// greatestCommonDivisor(a: 3, b: 5) == 1
// greatestCommonDivisor(a: 25, b: 15) == 5
func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if a == 0 {
        return b
    }
    if b == 0 {
        return a
    }
    if a == b {
        return a
    }
    if a > b {
        return greatestCommonDivisor(a: a - b, b: b)
    }
    return greatestCommonDivisor(a: a, b: b - a)
}

// Return a least common multiple of two integers a and b
// leastCommonMultiple(a: 3, b: 5) == 15
// leastCommonMultiple(a: 25, b: 15) == 30
func leastCommonMultiple(a: Int, b: Int) -> Int {
    return a * b / greatestCommonDivisor(a: a, b: b)
}

// Return a number of permutations of a given array
// permutations([1, 2, 3]) == 6
// permutations([1, 2, 3, 4]) == 24
// permutations([1, 2, 3, 4, 5]) == 120
// permutations([1, 2, 3, 4, 5, 6]) == 720
func permutations(array: [Int]) -> Int {
    if array.count == 1 {
        return 1
    }
    var result = 1
    for i in 1...array.count {
        result *= i
    }
    return result
}

// Return a number of combinations of a given array
// combinations([1, 2, 3]) == 6
// combinations([1, 2, 3, 4]) == 20
// combinations([1, 2, 3, 4, 5]) == 15
// combinations([1, 2, 3, 4, 5, 6]) == 120
func combinations(array: [Int]) -> Int {
    if array.count == 1 {
        return 1
    }
    var result = 1
    for i in 1...array.count {
        result *= i
    }
    return result
}

// Return a number of combinations of a given array
// combinations([1, 2, 3]) == 6
// combinations([1, 2, 3, 4]) == 20
// combinations([1, 2, 3, 4, 5]) == 15
// combinations([1, 2, 3, 4, 5, 6]) == 120
func combinations(array: [Int]) -> Int {
    if array.count == 1 {
        return 1
    }
    var result = 1
    for i in 1...array.count {
        result *= i
    }
    return result
}

// Return a number of combinations of a given array
// combinations([1, 2, 3]) == 6
// combinations([1, 2, 3, 4]) == 20
// combinations([1, 2, 3, 4, 5]) == 15
// combinations([1, 2, 3, 4, 5, 6]) == 120
func combinations(array: [Int]) -> Int {
    if array.count == 1 {
        return 1
    }
    var result = 1
    for i in 1...array.count {
        result *= i
    }
    return result
}

// Return a number of combinations of a given array
// combinations([1, 2, 3]) == 6
// combinations([1, 2, 3, 4]) == 20
// combinations([1, 2, 3, 4, 5]) == 15
// combinations([1, 2, 3, 4, 5, 6]) == 120
func combinations(array: [Int]) -> Int {
    if array.count == 1 {
        return 1
    }
    var result = 1
    for i in 1...array.count {
        result *= i
    }
    return result
}

// Return a number of combinations of a given array
// combinations([1, 2, 3]) == 6
// combinations([1, 2, 3, 4]) == 20
// combinations([1, 2, 3,

func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if a == 0 {
        return b
    }
    if b == 0 {
        return a
    }
    if a == b {
        return a
    }
    if a > b {
        return greatestCommonDivisor(a: a - b, b: b)
    }
    return greatestCommonDivisor(a: a, b: b - a)
}
```swift
// Return a greatest common divisor of two integers a and b
// greatestCommonDivisor(a: 3, b: 5) == 1
// greatestCommonDivisor(a: 25, b: 15) == 5
func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if a == 0 {
        return b
    }
    if b == 0 {
        return a
    }
    if a == b {
        return a
    }
    if a > b {
        return greatestCommonDivisor(a: a - b, b: b)
    }
    return greatestCommonDivisor(a: a, b: b - a)
}
<|file_separator|>

func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if a == b {
        return a
    }
    if a > b {
        return greatestCommonDivisor(a: a - b, b: b)
    }
    return greatestCommonDivisor(a: a, b: b - a)
}

func leastCommonMultiple(a: Int, b: Int) -> Int {
    return a * b / greatestCommonDivisor(a: a, b: b)
}

func primeNumbers(n: Int) -> [Int] {
    var primes = [2]
    for i in 3...n {
        var isPrime = true
        for j in 2..<i {
            if i % j == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            primes.append(i)
        }
    }
    return primes
}

func primeFactors(n: Int) -> [Int] {
    var factors = [Int]()
    var num = n
    for i in 2...n {
        while num % i == 0 {
            factors.append(i)
            num /= i
        }
    }
    return factors
}

func permutations(str: String) -> [String] {
    if str.count == 1 {
        return [str]
    }
    var permutations = [String]()
    for i in 0..<str.count {
        let char = str[str.index(str.startIndex, offsetBy: i)]
        let remaining = str.substring(from: str.index(str.startIndex, offsetBy: i + 1))
        for perm in permutations(str: remaining) {
            permutations.append(String(char) + perm)
        }
    }
    return permutations
}

func anagrams(str: String) -> [String] {
    var anagrams = [String]()
    for i in 0..<str.count {
        let char = str[str.index(str.startIndex, offsetBy: i)]
        let remaining = str.substring(from: str.index(str.startIndex, offsetBy: i + 1))
        for anagram in anagrams(str: remaining) {
            anagrams.append(String(char) + anagram)
        }
    }
    return anagrams
}
```swift
// Return a greatest common divisor of two integers a and b
// greatestCommonDivisor(a: 3, b: 5) == 1
// greatestCommonDivisor(a: 25, b: 15) == 5
func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if a == b {
        return a
    }
    if a > b {
        return greatestCommonDivisor(a: a - b, b: b)
    }
    return greatestCommonDivisor(a: a, b: b - a)
}

// Return a least common multiple of two integers a and b
// leastCommonMultiple(a: 3, b: 5) == 15
// leastCommonMultiple(a: 25, b: 15) == 15
func leastCommonMultiple(a: Int, b: Int) -> Int {
    return a * b / greatestCommonDivisor(a: a, b: b)
}

// Return a list of all prime numbers from 1 to n
// primeNumbers(10) == [2, 3, 5, 7]
func primeNumbers(n: Int) -> [Int] {
    var primes = [2]
    for i in 3...n {
        var isPrime = true
        for j in 2..<i {
            if i % j == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            primes.append(i)
        }
    }
    return primes
}

// Return a list of all prime factors of a given number n
// primeFactors(10) == [2, 5]
// primeFactors(30) == [2, 3, 5]
func primeFactors(n: Int) -> [Int] {
    var factors = [Int]()
    var num = n
    for i in 2...n {
        while num % i == 0 {
            factors.append(i)
            num /= i
        }
    }
    return factors
}

// Return a list of all permutations of a given string
// permutations("abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(str: String) -> [String] {
    if str.count == 1 {
        return [str]
    }
    var permutations = [String]()
    for i in 0..<str.count {
        let char = str[str.index(str.startIndex, offsetBy: i)]
        let remaining = str.substring(from: str.index(str.startIndex, offsetBy: i + 1))
        for perm in permutations(str: remaining) {
            permutations.append(String(char) + perm)
        }
    }
    return permutations
}

// Return a list of all anagrams of a given string
// anagrams("abba") == ["aabb", "abcd", "baab", "bacd"]
// anagrams("racer") == ["crazer", "carer", "racar", "caers", "racer"]
func anagrams(str: String) -> [String] {
    var anagrams = [String]()
    for i in 0..<str.count {
        let char = str[str.index(str.startIndex, offsetBy: i)]
        let remaining = str.substring(from: str.index(str.startIndex, offsetBy: i + 1))
        for anagram in anagrams(str: remaining) {
            anagrams.append(String(char) + anagram)
        }
    }
    return anagrams
}

// Return a list of all anagrams of a given string
// anagrams("abba") == ["aabb", "abcd", "baab", "bacd"]
// anagrams("racer") == ["crazer", "carer", "racar", "caers", "racer"]
func anagrams(str: String) -> [String] {
    var anagrams = [String]()
    for i in 0..<str.count {
        let char = str[str.index(str.startIndex, offsetBy: i)]
        let remaining = str.substring(from: str.index(str.startIndex, offsetBy: i + 1))
        for anagram in anagrams(str: remaining) {
            anagrams.append(String(char) + anagram)
        }
    }
    return anagrams
}

// Return a list of all anagrams of a given string
// anagrams("abba") == ["aabb", "abcd", "baab", "bacd"]
// anagrams("racer") == ["crazer", "carer", "racar", "caers", "racer"]
func anagrams(str
let remaining = str.substring(from: str.index(str.startIndex, offsetBy: i + 1)) // 'substring(from:)' is deprecated: Please use String slicing subscript with a 'partial range from' operator.
for perm in permutations(str: remaining) { // cannot call value of non-function type '[String]'
let remaining = str.substring(from: str.index(str.startIndex, offsetBy: i + 1)) // 'substring(from:)' is deprecated: Please use String slicing subscript with a 'partial range from' operator.
for anagram in anagrams(str: remaining) { // cannot call value of non-function type '[String]'

func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if a == 0 {
        return b
    }
    if b == 0 {
        return a
    }
    if a == b {
        return a
    }
    if a > b {
        return greatestCommonDivisor(a: a - b, b: b)
    }
    return greatestCommonDivisor(a: a, b: b - a)
}

func leastCommonMultiple(a: Int, b: Int) -> Int {
    return a * b / greatestCommonDivisor(a: a, b: b)
}

func primes(n: Int) -> [Int] {
    var primes = [Int]()
    for i in 2...n {
        var isPrime = true
        for j in 2...i {
            if j == i {
                primes.append(i)
                break
            }
            if i % j == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            primes.append(i)
        }
    }
    return primes
}

func primeFactors(n: Int) -> [Int] {
    var factors = [Int]()
    var i = 2
    while i <= n {
        if n % i == 0 {
            factors.append(i)
            n /= i
        } else {
            i++
        }
    }
    return factors
}

func permutations(str: String) -> [String] {
    if str.count == 1 {
        return [str]
    }
    var permutations = [String]()
    for i in 0..<str.count {
        let char = str[str.index(str.startIndex, offsetBy: i)]
        let remaining = str.substring(from: str.index(str.startIndex, offsetBy: i + 1))
        for perm in permutations(str: remaining) {
            permutations.append(String(char) + perm)
        }
    }
    return permutations
}

func anagrams(str: String) -> [String] {
    if str.count == 1 {
        return [str]
    }
    var anagrams = [String]()
    for i in 0..<str.count {
        let char = str[str.index(str.startIndex, offsetBy: i)]
        let remaining = str.substring(from: str.index(str.startIndex, offsetBy: i + 1))
        for perm in anagrams(str: remaining) {
            anagrams.append(String(char) + perm)
        }
    }
    return anagrams
}
```swift
// Return a greatest common divisor of two integers a and b
// greatestCommonDivisor(a: 3, b: 5) == 1
// greatestCommonDivisor(a: 25, b: 15) == 5
func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if a == 0 {
        return b
    }
    if b == 0 {
        return a
    }
    if a == b {
        return a
    }
    if a > b {
        return greatestCommonDivisor(a: a - b, b: b)
    }
    return greatestCommonDivisor(a: a, b: b - a)
}

// Return a least common multiple of two integers a and b
// leastCommonMultiple(a: 3, b: 5) == 15
// leastCommonMultiple(a: 25, b: 15) == 30
func leastCommonMultiple(a: Int, b: Int) -> Int {
    return a * b / greatestCommonDivisor(a: a, b: b)
}

// Return a list of all the prime numbers less than or equal to n
// primes(10) == [2, 3, 5, 7]
func primes(n: Int) -> [Int] {
    var primes = [Int]()
    for i in 2...n {
        var isPrime = true
        for j in 2...i {
            if j == i {
                primes.append(i)
                break
            }
            if i % j == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            primes.append(i)
        }
    }
    return primes
}

// Return a list of all the prime factors of n
// primeFactors(10) == [2, 5]
// primeFactors(30) == [2, 3, 5]
func primeFactors(n: Int) -> [Int] {
    var factors = [Int]()
    var i = 2
    while i <= n {
        if n % i == 0 {
            factors.append(i)
            n /= i
        } else {
            i++
        }
    }
    return factors
}

// Return a list of all the permutations of the characters in a string
// permutations("abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(str: String) -> [String] {
    if str.count == 1 {
        return [str]
    }
    var permutations = [String]()
    for i in 0..<str.count {
        let char = str[str.index(str.startIndex, offsetBy: i)]
        let remaining = str.substring(from: str.index(str.startIndex, offsetBy: i + 1))
        for perm in permutations(str: remaining) {
            permutations.append(String(char) + perm)
        }
    }
    return permutations
}

// Return a list of all the anagrams of a string
// anagrams("abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func anagrams(str: String) -> [String] {
    if str.count == 1 {
        return [str]
    }
    var anagrams = [String]()
    for i in 0..<str.count {
        let char = str[str.index(str.startIndex, offsetBy: i)]
        let remaining = str.substring(from: str.index(str.startIndex, offsetBy: i + 1))
        for perm in anagrams(str: remaining) {
            anagrams.append(String(char) + perm)
        }
    }
    return anagrams
}

// Return a list of all the anagrams of a string
// anagrams("abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func anagrams(str: String) -> [String] {
    if str.count == 1 {
        return [str]
    }
    var anagrams = [String]()
    for i in 0..<str.count {
        let char = str[str.index(str.startIndex, offsetBy: i)]
        let remaining = str.substring(from: str.index(str.startIndex, offsetBy: i + 1))
        for perm in anagrams(str: remaining) {
            anagrams.append(String(char) + perm)
        }
    }
    return anagrams
}

// Return a list of all the anagrams of a string
// anagrams("abc") ==
n /= i // left side of mutating operator isn't mutable: 'n' is a 'let' constant
i++ // cannot find operator '++' in scope; did you mean '+= 1'?
let remaining = str.substring(from: str.index(str.startIndex, offsetBy: i + 1)) // 'substring(from:)' is deprecated: Please use String slicing subscript with a 'partial range from' operator.
for perm in permutations(str: remaining) { // cannot call value of non-function type '[String]'
let remaining = str.substring(from: str.index(str.startIndex, offsetBy: i + 1)) // 'substring(from:)' is deprecated: Please use String slicing subscript with a 'partial range from' operator.
for perm in anagrams(str: remaining) { // cannot call value of non-function type '[String]'

func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if a == b {
        return a
    }
    if a > b {
        return greatestCommonDivisor(a: a - b, b: b)
    }
    return greatestCommonDivisor(a: a, b: b - a)
}

func leastCommonMultiple(a: Int, b: Int) -> Int {
    return a * b / greatestCommonDivisor(a: a, b: b)
}

func sum(array: [Int]) -> Int {
    if array.isEmpty {
        return 0
    }
    return array.first! + sum(array: Array(array.dropFirst()))
}

func sum(array: [Int]) -> Int {
    if array.count == 1 {
        return array.first!
    }
    return array.first! + sum(array: Array(array.dropFirst()))
}

func sum(array: [Int]) -> Int {
    if array.count == 1 {
        return array.first!
    }
    return sum(array: Array(array.dropLast())) + array.last!
}

func sum(array: [Int]) -> Int {
    if array.count == 1 {
        return array.first!
    }
    return sum(array: Array(array.dropFirst().dropLast())) + array.first! + array.last!
}

func sum(array: [Int]) -> Int {
    if array.count == 1 {
        return array.first!
    }
    if array.count == 2 {
        return array.first! + array.last!
    }
    if array.count == 3 {
        return array.first! + array.last! + array[1]
    }
    if array.count == 4 {
        return array.first! + array.last! + array[1] + array[2]
    }
    if array.count == 5 {
        return array.first! + array.last! + array[1] + array[2] + array[3]
    }
    return sum(array: Array(array.dropFirst().dropLast())) + array.first! + array.last!
}
```swift
// Return a greatest common divisor of two integers a and b
// greatestCommonDivisor(a: 3, b: 5) == 1
// greatestCommonDivisor(a: 25, b: 15) == 5
func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if a == b {
        return a
    }
    if a > b {
        return greatestCommonDivisor(a: a - b, b: b)
    }
    return greatestCommonDivisor(a: a, b: b - a)
}

// Return a least common multiple of two integers a and b
// leastCommonMultiple(a: 3, b: 5) == 15
// leastCommonMultiple(a: 25, b: 15) == 30
func leastCommonMultiple(a: Int, b: Int) -> Int {
    return a * b / greatestCommonDivisor(a: a, b: b)
}

// Return a sum of all elements in the array
// sum(array: [1, 2, 3]) == 6
// sum(array: [1, 2, 3, 4]) == 10
func sum(array: [Int]) -> Int {
    if array.isEmpty {
        return 0
    }
    return array.first! + sum(array: Array(array.dropFirst()))
}

// Return a sum of all elements in the array except the first element
// sum(array: [1, 2, 3]) == 5
// sum(array: [1, 2, 3, 4]) == 9
func sum(array: [Int]) -> Int {
    if array.count == 1 {
        return array.first!
    }
    return array.first! + sum(array: Array(array.dropFirst()))
}

// Return a sum of all elements in the array except the last element
// sum(array: [1, 2, 3]) == 4
// sum(array: [1, 2, 3, 4]) == 8
func sum(array: [Int]) -> Int {
    if array.count == 1 {
        return array.first!
    }
    return sum(array: Array(array.dropLast())) + array.last!
}

// Return a sum of all elements in the array except the first and the last element
// sum(array: [1, 2, 3]) == 2
// sum(array: [1, 2, 3, 4]) == 6
func sum(array: [Int]) -> Int {
    if array.count == 1 {
        return array.first!
    }
    return sum(array: Array(array.dropFirst().dropLast())) + array.first! + array.last!
}

// Return a sum of all elements in the array except the first and the last element,
// but the first and the last element are not included in the sum
// sum(array: [1, 2, 3]) == 2
// sum(array: [1, 2, 3, 4]) == 4
func sum(array: [Int]) -> Int {
    if array.count == 1 {
        return array.first!
    }
    return sum(array: Array(array.dropFirst().dropLast())) + array.first! + array.last!
}

// Return a sum of all elements in the array except the first and the last element,
// but the first and the last element are not included in the sum,
// and the sum of the remaining elements is even
// sum(array: [1, 2, 3]) == 2
// sum(array: [1, 2, 3, 4]) == 4
// sum(array: [1, 2, 3, 4, 5]) == 6
func sum(array: [Int]) -> Int {
    if array.count == 1 {
        return array.first!
    }
    if array.count == 2 {
        return array.first! + array.last!
    }
    if array.count == 3 {
        return array.first! + array.last! + array[1]
    }
    if array.count == 4 {
        return array.first! + array.last! + array[1] + array[2]
    }
    if array.count == 5 {
        return array.first! + array.last! + array[1] + array[2] + array[3]
    }
    return sum(array: Array(array.dropFirst().dropLast())) + array.first! + array.last!
}

// Return
func sum(array: [Int]) -> Int { // invalid redeclaration of 'sum(array:)'
func sum(array: [Int]) -> Int { // invalid redeclaration of 'sum(array:)'
func sum(array: [Int]) -> Int { // invalid redeclaration of 'sum(array:)'
func sum(array: [Int]) -> Int { // invalid redeclaration of 'sum(array:)'

func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if a == b {
        return a
    }
    if a > b {
        return greatestCommonDivisor(a: a - b, b: b)
    }
    return greatestCommonDivisor(a: a, b: b - a)
}

func leastCommonMultiple(a: Int, b: Int) -> Int {
    return (a * b) / greatestCommonDivisor(a: a, b: b)
}

func sumOfArray(array: [Int]) -> Int {
    if array.count == 1 {
        return array[0]
    }
    return array[0] + sumOfArray(array: Array(array[1..<array.count]))
}

func sumOfArrayExceptFirst(array: [Int]) -> Int {
    if array.count == 1 {
        return array[0]
    }
    return array[0] + sumOfArrayExceptFirst(array: Array(array[1..<array.count]))
}

func sumOfArrayExceptLast(array: [Int]) -> Int {
    if array.count == 1 {
        return array[0]
    }
    return array[0] + sumOfArrayExceptLast(array: Array(array[0..<array.count - 1]))
}

func sumOfArrayExceptFirstAndLast(array: [Int]) -> Int {
    if array.count == 1 {
        return array[0]
    }
    return array[0] + sumOfArrayExceptFirstAndLast(array: Array(array[1..<array.count - 1]))
}

func sumOfArrayExceptFirstLastAndSecond(array: [Int]) -> Int {
    if array.count == 1 {
        return array[0]
    }
    return array[0] + sumOfArrayExceptFirstLastAndSecond(array: Array(array[1..<array.count - 1]))
}

func sumOfArrayExceptFirstLastSecondAndThird(array: [Int]) -> Int {
    if array.count == 1 {
        return array[0]
    }
    return array[0] + sumOfArrayExceptFirstLastSecondAndThird(array: Array(array[1..<array.count - 1]))
}
```swift
// Return a greatest common divisor of two integers a and b
// greatestCommonDivisor(a: 3, b: 5) == 1
// greatestCommonDivisor(a: 25, b: 15) == 5
func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if a == b {
        return a
    }
    if a > b {
        return greatestCommonDivisor(a: a - b, b: b)
    }
    return greatestCommonDivisor(a: a, b: b - a)
}

// Return a least common multiple of two integers a and b
// leastCommonMultiple(a: 3, b: 5) == 15
// leastCommonMultiple(a: 25, b: 15) == 15
func leastCommonMultiple(a: Int, b: Int) -> Int {
    return (a * b) / greatestCommonDivisor(a: a, b: b)
}

// Return a sum of all elements in an array
// sumOfArray([1, 2, 3]) == 6
// sumOfArray([1, 2, 3, 4]) == 10
func sumOfArray(array: [Int]) -> Int {
    if array.count == 1 {
        return array[0]
    }
    return array[0] + sumOfArray(array: Array(array[1..<array.count]))
}

// Return a sum of all elements in an array except the first element
// sumOfArrayExceptFirst([1, 2, 3]) == 4
// sumOfArrayExceptFirst([1, 2, 3, 4]) == 9
func sumOfArrayExceptFirst(array: [Int]) -> Int {
    if array.count == 1 {
        return array[0]
    }
    return array[0] + sumOfArrayExceptFirst(array: Array(array[1..<array.count]))
}

// Return a sum of all elements in an array except the last element
// sumOfArrayExceptLast([1, 2, 3]) == 4
// sumOfArrayExceptLast([1, 2, 3, 4]) == 8
func sumOfArrayExceptLast(array: [Int]) -> Int {
    if array.count == 1 {
        return array[0]
    }
    return array[0] + sumOfArrayExceptLast(array: Array(array[0..<array.count - 1]))
}

// Return a sum of all elements in an array except the first and last element
// sumOfArrayExceptFirstAndLast([1, 2, 3]) == 4
// sumOfArrayExceptFirstAndLast([1, 2, 3, 4]) == 6
func sumOfArrayExceptFirstAndLast(array: [Int]) -> Int {
    if array.count == 1 {
        return array[0]
    }
    return array[0] + sumOfArrayExceptFirstAndLast(array: Array(array[1..<array.count - 1]))
}

// Return a sum of all elements in an array except the first, last and second elements
// sumOfArrayExceptFirstLastAndSecond([1, 2, 3]) == 4
// sumOfArrayExceptFirstLastAndSecond([1, 2, 3, 4]) == 6
func sumOfArrayExceptFirstLastAndSecond(array: [Int]) -> Int {
    if array.count == 1 {
        return array[0]
    }
    return array[0] + sumOfArrayExceptFirstLastAndSecond(array: Array(array[1..<array.count - 1]))
}

// Return a sum of all elements in an array except the first, last, second and third elements
// sumOfArrayExceptFirstLastSecondAndThird([1, 2, 3]) == 4
// sumOfArrayExceptFirstLastSecondAndThird([1, 2, 3, 4]) == 6
func sumOfArrayExceptFirstLastSecondAndThird(array: [Int]) -> Int {
    if array.count == 1 {
        return array[0]
    }
    return array[0] + sumOfArrayExceptFirstLastSecondAndThird(array: Array(array[1..<array.count - 1]))
}

// Return a sum of all elements in an array except the first, last, second, third and fourth elements
// sumOfArrayExceptFirstLastSecondThirdAndFourth([1, 2, 3]) == 4
// sumOfArrayExceptFirstLastSecondThirdAndFourth([1, 2, 3, 4]) == 6
func sumOfArrayExceptFirstLastSecondThirdAndFourth(array: [Int]) -> Int {
    

func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if b == 0 {
        return a
    }
    return greatestCommonDivisor(a: b, b: a % b)
}

func leastCommonMultiple(a: Int, b: Int) -> Int {
    return a * b / greatestCommonDivisor(a: a, b: b)
}

func primeNumbers(n: Int) -> [Int] {
    var isPrime = [Bool](repeating: true, count: n)
    var primes = [Int]()
    for i in 2..<n {
        if isPrime[i] {
            primes.append(i)
            for j in stride(from: i, to: n, by: i) {
                isPrime[j] = false
            }
        }
    }
    return primes
}
```swift
// Return a greatest common divisor of two integers a and b
// greatestCommonDivisor(a: 3, b: 5) == 1
// greatestCommonDivisor(a: 25, b: 15) == 5
func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if b == 0 {
        return a
    }
    return greatestCommonDivisor(a: b, b: a % b)
}

// Return a least common multiple of two integers a and b
// leastCommonMultiple(a: 3, b: 5) == 15
// leastCommonMultiple(a: 25, b: 15) == 15
func leastCommonMultiple(a: Int, b: Int) -> Int {
    return a * b / greatestCommonDivisor(a: a, b: b)
}

// Return a list of all the prime numbers from 1 to n
// primeNumbers(n: 10) == [2, 3, 5, 7]
func primeNumbers(n: Int) -> [Int] {
    var isPrime = [Bool](repeating: true, count: n)
    var primes = [Int]()
    for i in 2..<n {
        if isPrime[i] {
            primes.append(i)
            for j in stride(from: i, to: n, by: i) {
                isPrime[j] = false
            }
        }
    }
    return primes
}

// Return a list of all the prime numbers from 1 to n
// primeNumbers(n: 10) == [2, 3, 5, 7]
func primeNumbers(n: Int) -> [Int] {
    var isPrime = [Bool](repeating: true, count: n)
    var primes = [Int]()
    for i in 2..<n {
        if isPrime[i] {
            primes.append(i)
            for j in stride(from: i, to: n, by: i) {
                isPrime[j] = false
            }
        }
    }
    return primes
}

// Return a list of all the prime numbers from 1 to n
// primeNumbers(n: 10) == [2, 3, 5, 7]
func primeNumbers(n: Int) -> [Int] {
    var isPrime = [Bool](repeating: true, count: n)
    var primes = [Int]()
    for i in 2..<n {
        if isPrime[i] {
            primes.append(i)
            for j in stride(from: i, to: n, by: i) {
                isPrime[j] = false
            }
        }
    }
    return primes
}

// Return a list of all the prime numbers from 1 to n
// primeNumbers(n: 10) == [2, 3, 5, 7]
func primeNumbers(n: Int) -> [Int] {
    var isPrime = [Bool](repeating: true, count: n)
    var primes = [Int]()
    for i in 2..<n {
        if isPrime[i] {
            primes.append(i)
            for j in stride(from: i, to: n, by: i) {
                isPrime[j] = false
            }
        }
    }
    return primes
}

// Return a list of all the prime numbers from 1 to n
// primeNumbers(n: 10) == [2, 3, 5, 7]
func primeNumbers(n: Int) -> [Int] {
    var isPrime = [Bool](repeating: true, count: n)
    var primes = [Int]()
    for i in 2..<n {
        if isPrime[i] {
            primes.append(i)
            for j in stride(from: i, to: n, by: i) {
                isPrime[j] = false
            }
        }
    }
    return primes
}

// Return a list of all the prime numbers from 1 to n
// primeNumbers(n: 10) == [2, 3, 5, 7]
func primeNumbers(n: Int) -> [Int] {
    var isPrime = [Bool](repeating: true, count: n)
    var primes = [Int]()
    for i in 2..<n {
        if isPrime[i] {
            primes.append(i)
            for j in stride(from: i, to: n, by: i) {
                isPrime[j] = false
            }
        }
    }
    return primes
}

func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if b == 0 {
        return a
    }
    return greatestCommonDivisor(a: b, b: a % b)
}

func leastCommonMultiple(a: Int, b: Int) -> Int {
    return (a * b) / greatestCommonDivisor(a: a, b: b)
}

func primeNumbers(n: Int) -> [Int] {
    var primes = [2]
    var i = 3
    while i < n {
        var isPrime = true
        for j in 2..<i {
            if i % j == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            primes.append(i)
        }
        i += 1
    }
    return primes
}

func fibonacciNumbers(n: Int) -> [Int] {
    var fibonacci = [1, 1]
    var i = 2
    while fibonacci[i - 1] + fibonacci[i - 2] < n {
        fibonacci.append(fibonacci[i - 1] + fibonacci[i - 2])
        i += 1
    }
    return fibonacci
}

func primeFibonacciNumbers(n: Int) -> [Int] {
    var fibonacci = [1, 1]
    var i = 2
    while fibonacci[i - 1] + fibonacci[i - 2] < n {
        fibonacci.append(fibonacci[i - 1] + fibonacci[i - 2])
        i += 1
    }
    var primes = [2]
    var j = 3
    while j < n {
        var isPrime = true
        for k in 2..<j {
            if j % k == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            primes.append(j)
        }
        j += 1
    }
    return primes
}
```swift
// Return a greatest common divisor of two integers a and b
// greatestCommonDivisor(a: 3, b: 5) == 1
// greatestCommonDivisor(a: 25, b: 15) == 5
func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if b == 0 {
        return a
    }
    return greatestCommonDivisor(a: b, b: a % b)
}

// Return a least common multiple of two integers a and b
// leastCommonMultiple(a: 3, b: 5) == 15
// leastCommonMultiple(a: 25, b: 15) == 30
func leastCommonMultiple(a: Int, b: Int) -> Int {
    return (a * b) / greatestCommonDivisor(a: a, b: b)
}

// Return a list of all prime numbers less than n
// primeNumbers(n: 10) == [2, 3, 5, 7]
func primeNumbers(n: Int) -> [Int] {
    var primes = [2]
    var i = 3
    while i < n {
        var isPrime = true
        for j in 2..<i {
            if i % j == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            primes.append(i)
        }
        i += 1
    }
    return primes
}

// Return a list of all fibonacci numbers less than n
// fibonacciNumbers(n: 10) == [1, 1, 2, 3, 5, 8]
func fibonacciNumbers(n: Int) -> [Int] {
    var fibonacci = [1, 1]
    var i = 2
    while fibonacci[i - 1] + fibonacci[i - 2] < n {
        fibonacci.append(fibonacci[i - 1] + fibonacci[i - 2])
        i += 1
    }
    return fibonacci
}

// Return a list of all prime fibonacci numbers less than n
// primeFibonacciNumbers(n: 10) == [1, 1, 2, 3, 5, 8]
func primeFibonacciNumbers(n: Int) -> [Int] {
    var fibonacci = [1, 1]
    var i = 2
    while fibonacci[i - 1] + fibonacci[i - 2] < n {
        fibonacci.append(fibonacci[i - 1] + fibonacci[i - 2])
        i += 1
    }
    var primes = [2]
    var j = 3
    while j < n {
        var isPrime = true
        for k in 2..<j {
            if j % k == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            primes.append(j)
        }
        j += 1
    }
    return primes
}

// Return a list of all prime fibonacci numbers less than n
// primeFibonacciNumbers(n: 10) == [1, 1, 2, 3, 5, 8]
func primeFibonacciNumbers(n: Int) -> [Int] {
    var fibonacci = [1, 1]
    var i = 2
    while fibonacci[i - 1] + fibonacci[i - 2] < n {
        fibonacci.append(fibonacci[i - 1] + fibonacci[i - 2])
        i += 1
    }
    var primes = [2]
    var j = 3
    while j < n {
        var isPrime = true
        for k in 2..<j {
            if j % k == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            primes.append(j)
        }
        j += 1
    }
    return primes
}

// Return a list of all prime fibonacci numbers less than n
// primeFibonacciNumbers(n: 10) == [1, 1, 2, 3, 5, 8]
func primeFibonacciNumbers(n: Int) -> [Int] {
    var fibonacci = [1, 1]
    var i = 2
    while fibonacci[i - 1] + fibonacci[i - 2] < n {
        fibonacci.append(fibonacci[i - 1] + fibonacci[i - 2])
        i += 1
    }
    var primes = [2]
    var j = 3
    while j < n {
        var isPrime = true
        for k in 2..<j {
            if j

func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if a == b {
        return a
    }
    
    if a > b {
        return greatestCommonDivisor(a: a - b, b: b)
    }
    
    return greatestCommonDivisor(a: a, b: b - a)
}

func leastCommonMultiple(a: Int, b: Int) -> Int {
    return (a * b) / greatestCommonDivisor(a: a, b: b)
}

func primeNumbers(n: Int) -> [Int] {
    var primes = [2]
    var i = 3
    
    while i <= n {
        var isPrime = true
        
        for j in 2..<i {
            if i % j == 0 {
                isPrime = false
                break
            }
        }
        
        if isPrime {
            primes.append(i)
        }
        
        i += 1
    }
    
    return primes
}

func primeFactors(n: Int) -> [Int] {
    var factors = [Int]()
    var num = n
    
    for i in 2...num {
        while num % i == 0 {
            factors.append(i)
            num /= i
        }
    }
    
    return factors
}

func permutations(s: String) -> [String] {
    if s.count == 1 {
        return [s]
    }
    
    var permutations = [String]()
    
    for i in 0..<s.count {
        let char = s[s.index(s.startIndex, offsetBy: i)]
        let remaining = s[s.index(s.startIndex, offsetBy: i + 1)..<s.endIndex]
        
        for perm in permutations(s: String(remaining)) {
            permutations.append(String(char) + perm)
        }
    }
    
    return permutations
}

func anagrams(s: String) -> [String] {
    if s.count == 1 {
        return [s]
    }
    
    var anagrams = [String]()
    
    for i in 0..<s.count {
        let char = s[s.index(s.startIndex, offsetBy: i)]
        let remaining = s[s.index(s.startIndex, offsetBy: i + 1)..<s.endIndex]
        
        for perm in anagrams(s: String(remaining)) {
            anagrams.append(String(char) + perm)
        }
    }
    
    return anagrams
}
```swift
// Return a greatest common divisor of two integers a and b
// greatestCommonDivisor(a: 3, b: 5) == 1
// greatestCommonDivisor(a: 25, b: 15) == 5
func greatestCommonDivisor(a: Int, b: Int) -> Int {
    if a == b {
        return a
    }
    
    if a > b {
        return greatestCommonDivisor(a: a - b, b: b)
    }
    
    return greatestCommonDivisor(a: a, b: b - a)
}

// Return a least common multiple of two integers a and b
// leastCommonMultiple(a: 3, b: 5) == 15
// leastCommonMultiple(a: 25, b: 15) == 30
func leastCommonMultiple(a: Int, b: Int) -> Int {
    return (a * b) / greatestCommonDivisor(a: a, b: b)
}

// Return a list of all prime numbers less than or equal to n
// primeNumbers(n: 10) == [2, 3, 5, 7]
// primeNumbers(n: 15) == [2, 3, 5, 7, 11, 13]
func primeNumbers(n: Int) -> [Int] {
    var primes = [2]
    var i = 3
    
    while i <= n {
        var isPrime = true
        
        for j in 2..<i {
            if i % j == 0 {
                isPrime = false
                break
            }
        }
        
        if isPrime {
            primes.append(i)
        }
        
        i += 1
    }
    
    return primes
}

// Return a list of all prime factors of n
// primeFactors(n: 10) == [2, 5]
// primeFactors(n: 15) == [3, 5]
func primeFactors(n: Int) -> [Int] {
    var factors = [Int]()
    var num = n
    
    for i in 2...num {
        while num % i == 0 {
            factors.append(i)
            num /= i
        }
    }
    
    return factors
}

// Return a list of all permutations of the characters in s
// permutations(s: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(s: String) -> [String] {
    if s.count == 1 {
        return [s]
    }
    
    var permutations = [String]()
    
    for i in 0..<s.count {
        let char = s[s.index(s.startIndex, offsetBy: i)]
        let remaining = s[s.index(s.startIndex, offsetBy: i + 1)..<s.endIndex]
        
        for perm in permutations(s: String(remaining)) {
            permutations.append(String(char) + perm)
        }
    }
    
    return permutations
}

// Return a list of all anagrams of s
// anagrams(s: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func anagrams(s: String) -> [String] {
    if s.count == 1 {
        return [s]
    }
    
    var anagrams = [String]()
    
    for i in 0..<s.count {
        let char = s[s.index(s.startIndex, offsetBy: i)]
        let remaining = s[s.index(s.startIndex, offsetBy: i + 1)..<s.endIndex]
        
        for perm in anagrams(s: String(remaining)) {
            anagrams.append(String(char) + perm)
        }
    }
    
    return anagrams
}

// Return a list of all palindromic substrings of s
// palindromicSubstrings(s: "abc") == ["a", "b", "c", "ab", "bc", "ac", "ba", "bc", "ca", "abc"]
func palindromicSubstrings(s: String) -> [String] {
    var palindromicSubstrings = [String]()
    
    for i in 0..<s.count {
        for j in i..<s.count {
            let substring = s[s.index(s.startIndex, offsetBy: i)..<s.index(s.startIndex, offsetBy: j + 1)]
            
            if isPalindrome(s: String(substring)) {
                pal
for perm in permutations(s: String(remaining)) { // cannot call value of non-function type '[String]'
for perm in anagrams(s: String(remaining)) { // cannot call value of non-function type '[String]'

func allPrefixes(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)])
  }
  return result
}
```swift
// Return array of all prefixes from shortest to longest of the input string
// allPrefixes(string: "abc") == ["a", "ab", "abc"]
func allPrefixes(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)])
  }
  return result
}
<|file_separator|>
result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent

func allPrefixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)])
    }
    return result
}
```swift
// Return array of all prefixes from shortest to longest of the input string
// allPrefixes(string: "abc") == ["a", "ab", "abc"]
func allPrefixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)])
    }
    return result
}
<|file_separator|>
result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent

func allPrefixes(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)])
  }
  return result
}
```swift
// Return array of all prefixes from shortest to longest of the input string
// allPrefixes(string: "abc") == ["a", "ab", "abc"]
func allPrefixes(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)])
  }
  return result
}
<|file_separator|>
result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent

func allPrefixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)])
    }
    return result
}

func allSuffixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[string.index(string.startIndex, offsetBy: i)..<string.endIndex])
    }
    return result
}

func allSubstrings(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
        }
    }
    return result
}

func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
        }
    }
    return result
}
```swift
// Return array of all prefixes from shortest to longest of the input string
// allPrefixes(string: "abc") == ["a", "ab", "abc"]
func allPrefixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)])
    }
    return result
}

// Return array of all suffixes from shortest to longest of the input string
// allSuffixes(string: "abc") == ["abc", "bc", "c"]
func allSuffixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[string.index(string.startIndex, offsetBy: i)..<string.endIndex])
    }
    return result
}

// Return array of all substrings from shortest to longest of the input string
// allSubstrings(string: "abc") == ["a", "ab", "abc", "b", "bc", "c"]
func allSubstrings(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
        }
    }
    return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
        }
    }
    return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
        }
    }
    return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
        }
    }
    return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
        }
    }
    return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
        }
    }
    return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string
result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent
result.append(string[string.index(string.startIndex, offsetBy: i)..<string.endIndex]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent
result.append(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent
result.append(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent

func allPrefixes(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    result.append(string[..<i])
  }
  return result
}

func allSuffixes(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    result.append(string[i...])
  }
  return result
}

func allSubstrings(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    for j in i..<string.count {
      result.append(string[i...j])
    }
  }
  return result
}
```swift
// Return array of all prefixes from shortest to longest of the input string
// allPrefixes(string: "abc") == ["a", "ab", "abc"]
func allPrefixes(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    result.append(string[..<i])
  }
  return result
}

// Return array of all suffixes from shortest to longest of the input string
// allSuffixes(string: "abc") == ["a", "ab", "abc"]
func allSuffixes(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    result.append(string[i...])
  }
  return result
}

// Return array of all substrings of the input string
// allSubstrings(string: "abc") == ["a", "ab", "abc", "b", "bc", "c"]
func allSubstrings(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    for j in i..<string.count {
      result.append(string[i...j])
    }
  }
  return result
}

// Return array of all substrings of the input string
// allSubstrings(string: "abc") == ["a", "ab", "abc", "b", "bc", "c"]
func allSubstrings(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    for j in i..<string.count {
      result.append(string[i...j])
    }
  }
  return result
}

// Return array of all substrings of the input string
// allSubstrings(string: "abc") == ["a", "ab", "abc", "b", "bc", "c"]
func allSubstrings(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    for j in i..<string.count {
      result.append(string[i...j])
    }
  }
  return result
}

// Return array of all substrings of the input string
// allSubstrings(string: "abc") == ["a", "ab", "abc", "b", "bc", "c"]
func allSubstrings(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    for j in i..<string.count {
      result.append(string[i...j])
    }
  }
  return result
}

// Return array of all substrings of the input string
// allSubstrings(string: "abc") == ["a", "ab", "abc", "b", "bc", "c"]
func allSubstrings(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    for j in i..<string.count {
      result.append(string[i...j])
    }
  }
  return result
}

// Return array of all substrings of the input string
// allSubstrings(string: "abc") == ["a", "ab", "abc", "b", "bc", "c"]
func allSubstrings(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    for j in i..<string.count {
      result.append(string[i...j])
    }
  }
  return result
}

// Return array of all substrings of the input string
// allSubstrings(string: "abc") == ["a", "ab", "abc", "b", "bc", "c"]
func allSubstrings(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    for j in i..<string.count {
      result.append(string[i...j])
    }
  }
  return result
}

// Return array of all substrings of the input string
// allSubstrings(string: "abc") == ["a", "ab", "abc", "b", "bc", "c"]
func allSubstrings(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    for j in i..<string.count {
      result.append(string[i...j])
    }
  }
  return
result.append(string[..<i]) // 'subscript(_:)' is unavailable: cannot subscript String with an integer range, use a String.Index range instead.
result.append(string[i...]) // 'subscript(_:)' is unavailable: cannot subscript String with an integer range, use a String.Index range instead.
result.append(string[i...j]) // 'subscript(_:)' is unavailable: cannot subscript String with an integer range, use a String.Index range instead.

func allPrefixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)])
    }
    return result
}

func allSuffixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[string.index(string.startIndex, offsetBy: i)..<string.endIndex])
    }
    return result
}

func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            if i != j {
                result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
            }
        }
    }
    return result
}
```swift
// Return array of all prefixes from shortest to longest of the input string
// allPrefixes(string: "abc") == ["a", "ab", "abc"]
func allPrefixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)])
    }
    return result
}

// Return array of all suffixes from shortest to longest of the input string
// allSuffixes(string: "abc") == ["a", "ab", "abc"]
func allSuffixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[string.index(string.startIndex, offsetBy: i)..<string.endIndex])
    }
    return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            if i != j {
                result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
            }
        }
    }
    return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            if i != j {
                result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
            }
        }
    }
    return result
}
<|file_separator|>
result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent
result.append(string[string.index(string.startIndex, offsetBy: i)..<string.endIndex]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent
result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent
result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent

func allPrefixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[..<i])
    }
    return result
}
```swift
// Return array of all prefixes from shortest to longest of the input string
// allPrefixes(string: "abc") == ["a", "ab", "abc"]
func allPrefixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[..<i])
    }
    return result
}
<|file_separator|>
result.append(string[..<i]) // 'subscript(_:)' is unavailable: cannot subscript String with an integer range, use a String.Index range instead.

func allPrefixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)])
    }
    return result.sorted()
}

func allSuffixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[string.index(string.startIndex, offsetBy: i)..<string.endIndex])
    }
    return result.sorted()
}

func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
        }
    }
    return result.sorted()
}
```swift
// Return array of all prefixes from shortest to longest of the input string
// allPrefixes(string: "abc") == ["a", "ab", "abc"]
func allPrefixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)])
    }
    return result.sorted()
}

// Return array of all suffixes from shortest to longest of the input string
// allSuffixes(string: "abc") == ["a", "ab", "abc"]
func allSuffixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[string.index(string.startIndex, offsetBy: i)..<string.endIndex])
    }
    return result.sorted()
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
        }
    }
    return result.sorted()
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
        }
    }
    return result.sorted()
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
        }
    }
    return result.sorted()
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
        }
    }
    return result.sorted()
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
        }
    }
    return result.sorted()
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
        }
result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent
result.append(string[string.index(string.startIndex, offsetBy: i)..<string.endIndex]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent
result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent
result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent

func allPrefixes(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)])
  }
  return result
}

func allSuffixes(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    result.append(string[string.index(string.startIndex, offsetBy: i)..<string.endIndex])
  }
  return result
}

func permutations(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    for j in 0..<string.count {
      result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
    }
  }
  return result
}
```swift
// Return array of all prefixes from shortest to longest of the input string
// allPrefixes(string: "abc") == ["a", "ab", "abc"]
func allPrefixes(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)])
  }
  return result
}

// Return array of all suffixes from shortest to longest of the input string
// allSuffixes(string: "abc") == ["a", "ab", "abc"]
func allSuffixes(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    result.append(string[string.index(string.startIndex, offsetBy: i)..<string.endIndex])
  }
  return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    for j in 0..<string.count {
      result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
    }
  }
  return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    for j in 0..<string.count {
      result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
    }
  }
  return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    for j in 0..<string.count {
      result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
    }
  }
  return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    for j in 0..<string.count {
      result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
    }
  }
  return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    for j in 0..<string.count {
      result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
    }
  }
  return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
  var result = [String]()
  for i in 0..<string.count {
    for j in 0..<string.count {
      result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
    }
  }
  return result
}

// Return array of all permutations of the input string
result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent
result.append(string[string.index(string.startIndex, offsetBy: i)..<string.endIndex]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent
result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent
result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent

func allPrefixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)])
    }
    return result
}

func allSuffixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[string.index(string.startIndex, offsetBy: i)..<string.endIndex])
    }
    return result
}

func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
        }
    }
    return result
}
```swift
// Return array of all prefixes from shortest to longest of the input string
// allPrefixes(string: "abc") == ["a", "ab", "abc"]
func allPrefixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)])
    }
    return result
}

// Return array of all suffixes from shortest to longest of the input string
// allSuffixes(string: "abc") == ["a", "ab", "abc"]
func allSuffixes(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        result.append(string[string.index(string.startIndex, offsetBy: i)..<string.endIndex])
    }
    return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
        }
    }
    return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
        }
    }
    return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
        }
    }
    return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
        }
    }
    return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
        }
    }
    return result
}

// Return array of all permutations of the input string
// permutations(string: "abc") == ["abc", "acb", "bac", "bca", "cab", "cba"]
func permutations(string: String) -> [String] {
    var result = [String]()
    for i in 0..<string.count {
        for j in 0..<string.count {
            result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex])
        }
    }
    return result
}

// Return array of all permutations of the input string
result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent
result.append(string[string.index(string.startIndex, offsetBy: i)..<string.endIndex]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent
result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent
result.append(string[string.startIndex..<string.index(string.startIndex, offsetBy: i)] + string[string.index(string.startIndex, offsetBy: j)..<string.endIndex]) // subscript 'subscript(_:)' requires the types 'String.Index' and 'Int' be equivalent

func stringSequence(n: Int) -> String {
    var result = ""
    for i in 0...n {
        result += " " + String(i)
    }
    return result.trimmingCharacters(in: .whitespaces)
}
```swift
// Return a string containing space-delimited numbers starting from 0 upto n inclusive.
// stringSequence(n: 0) == "0"
// stringSequence(n: 5) == "0 1 2 3 4 5"
func stringSequence(n: Int) -> String {
    var result = ""
    for i in 0...n {
        result += " " + String(i)
    }
    return result.trimmingCharacters(in: .whitespaces)
}
<|file_separator|>

func stringSequence(n: Int) -> String {
    var result = ""
    for i in 0...n {
        result += " " + String(i)
    }
    return result.trimmingCharacters(in: .whitespaces)
}
```swift
// Return a string containing space-delimited numbers starting from 0 upto n inclusive.
// stringSequence(n: 0) == "0"
// stringSequence(n: 5) == "0 1 2 3 4 5"
func stringSequence(n: Int) -> String {
    var result = ""
    for i in 0...n {
        result += " " + String(i)
    }
    return result.trimmingCharacters(in: .whitespaces)
}
<|file_separator|>

func stringSequence(n: Int) -> String {
  var result = ""
  for i in 0...n {
    result += " " + String(i)
  }
  return result.trimmingCharacters(in: .whitespaces)
}
```swift
// Return a string containing space-delimited numbers starting from 0 upto n inclusive.
// stringSequence(n: 0) == "0"
// stringSequence(n: 5) == "0 1 2 3 4 5"
func stringSequence(n: Int) -> String {
  var result = ""
  for i in 0...n {
    result += " " + String(i)
  }
  return result.trimmingCharacters(in: .whitespaces)
}
<|file_separator|>

func stringSequence(n: Int) -> String {
  var result = ""
  for i in 0...n {
    result += " " + String(i)
  }
  return result.trim()
}
```swift
// Return a string containing space-delimited numbers starting from 0 upto n inclusive.
// stringSequence(n: 0) == "0"
// stringSequence(n: 5) == "0 1 2 3 4 5"
func stringSequence(n: Int) -> String {
  var result = ""
  for i in 0...n {
    result += " " + String(i)
  }
  return result.trim()
}
<|file_separator|>
return result.trim() // value of type 'String' has no member 'trim'

func stringSequence(n: Int) -> String {
    var result = ""
    for i in 0...n {
        result += " " + String(i)
    }
    return result.trimmingCharacters(in: .whitespaces)
}
```swift
// Return a string containing space-delimited numbers starting from 0 upto n inclusive.
// stringSequence(n: 0) == "0"
// stringSequence(n: 5) == "0 1 2 3 4 5"
func stringSequence(n: Int) -> String {
    var result = ""
    for i in 0...n {
        result += " " + String(i)
    }
    return result.trimmingCharacters(in: .whitespaces)
}
<|file_separator|>

func stringSequence(n: Int) -> String {
    var result = ""
    for i in 0...n {
        result += " \(i)"
    }
    return result.trimmingCharacters(in: .whitespaces)
}
```swift
// Return a string containing space-delimited numbers starting from 0 upto n inclusive.
// stringSequence(n: 0) == "0"
// stringSequence(n: 5) == "0 1 2 3 4 5"
func stringSequence(n: Int) -> String {
    var result = ""
    for i in 0...n {
        result += " \(i)"
    }
    return result.trimmingCharacters(in: .whitespaces)
}
<|file_separator|>

func stringSequence(n: Int) -> String {
  var result = ""
  for i in 0...n {
    result += " " + String(i)
  }
  return result.trim()
}
```swift
// Return a string containing space-delimited numbers starting from 0 upto n inclusive.
// stringSequence(n: 0) == "0"
// stringSequence(n: 5) == "0 1 2 3 4 5"
func stringSequence(n: Int) -> String {
  var result = ""
  for i in 0...n {
    result += " " + String(i)
  }
  return result.trim()
}

// Return a string containing space-delimited numbers starting from 0 upto n inclusive.
// stringSequence(n: 0) == "0"
// stringSequence(n: 5) == "0 1 2 3 4 5"
func stringSequence(n: Int) -> String {
  var result = ""
  for i in 0...n {
    result += " " + String(i)
  }
  return result.trim()
}
<|file_separator|>
return result.trim() // value of type 'String' has no member 'trim'

func stringSequence(n: Int) -> String {
    var result = ""
    for i in 0...n {
        result += " " + String(i)
    }
    return result.trimmingCharacters(in: .whitespaces)
}
```swift
// Return a string containing space-delimited numbers starting from 0 upto n inclusive.
// stringSequence(n: 0) == "0"
// stringSequence(n: 5) == "0 1 2 3 4 5"
func stringSequence(n: Int) -> String {
    var result = ""
    for i in 0...n {
        result += " " + String(i)
    }
    return result.trimmingCharacters(in: .whitespaces)
}
<|file_separator|>

func stringSequence(n: Int) -> String {
  var result = ""
  for i in 0...n {
    result += " " + String(i)
  }
  return result.trimmingCharacters(in: .whitespaces)
}
```swift
// Return a string containing space-delimited numbers starting from 0 upto n inclusive.
// stringSequence(n: 0) == "0"
// stringSequence(n: 5) == "0 1 2 3 4 5"
func stringSequence(n: Int) -> String {
  var result = ""
  for i in 0...n {
    result += " " + String(i)
  }
  return result.trimmingCharacters(in: .whitespaces)
}
<|file_separator|>

func stringSequence(n: Int) -> String {
    var result = ""
    for i in 0...n {
        result += " " + String(i)
    }
    return result.trimmingCharacters(in: .whitespaces)
}
```swift
// Return a string containing space-delimited numbers starting from 0 upto n inclusive.
// stringSequence(n: 0) == "0"
// stringSequence(n: 5) == "0 1 2 3 4 5"
func stringSequence(n: Int) -> String {
    var result = ""
    for i in 0...n {
        result += " " + String(i)
    }
    return result.trimmingCharacters(in: .whitespaces)
}
<|file_separator|>

func countDistinctCharacters(string: String) -> Int {
    var distinctCharacters = Set<Character>()
    for character in string.characters {
        distinctCharacters.insert(character)
    }
    return distinctCharacters.count
}

func countSubstringOccurrences(string: String, substring: String) -> Int {
    var substringOccurrences = 0
    var index = 0
    while index < string.characters.count {
        if string.substring(with: index..<index+substring.characters.count) == substring {
            substringOccurrences += 1
        }
        index += 1
    }
    return substringOccurrences
}
```swift
// Given a string, find out how many distinct characters (regardless of case) does it consist of
// countDistinctCharacters(string: "xyzXYZ") == 3
// countDistinctCharacters(string: "Jerry") == 4
func countDistinctCharacters(string: String) -> Int {
    var distinctCharacters = Set<Character>()
    for character in string.characters {
        distinctCharacters.insert(character)
    }
    return distinctCharacters.count
}

// Given a string, find out how many times a substring appears in the string
// countSubstringOccurrences(string: "xyzxyz", substring: "xyz") == 2
// countSubstringOccurrences(string: "abc", substring: "xyz") == 0
func countSubstringOccurrences(string: String, substring: String) -> Int {
    var substringOccurrences = 0
    var index = 0
    while index < string.characters.count {
        if string.substring(with: index..<index+substring.characters.count) == substring {
            substringOccurrences += 1
        }
        index += 1
    }
    return substringOccurrences
}

// Given a string, find out how many times a substring appears in the string, but only if the substring is at least 3 characters long
// countSubstringOccurrences(string: "xyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyzxyz
for character in string.characters { // 'characters' is unavailable: Please use String directly
while index < string.characters.count { // 'characters' is unavailable: Please use String directly
if string.substring(with: index..<index+substring.characters.count) == substring { // cannot convert value of type 'Int' to expected argument type 'String.Index'
if string.substring(with: index..<index+substring.characters.count) == substring { // cannot convert value of type 'Int' to expected argument type 'String.Index'

func countDistinctCharacters(string: String) -> Int {
  var distinctCharacters = Set<Character>()
  for character in string.characters {
    distinctCharacters.insert(character)
  }
  return distinctCharacters.count
}

func countVowels(string: String) -> Int {
  var vowels = 0
  for character in string.characters {
    if character == "a" || character == "e" || character == "i" || character == "o" || character == "u" {
      vowels += 1
    }
  }
  return vowels
}

func countConsonants(string: String) -> Int {
  var consonants = 0
  for character in string.characters {
    if character == "b" || character == "c" || character == "d" || character == "f" || character == "g" || character == "h" || character == "j" || character == "k" || character == "l" || character == "m" || character == "n" || character == "p" || character == "q" || character == "r" || character == "s" || character == "t" || character == "v" || character == "w" || character == "x" || character == "y" || character == "z" {
      consonants += 1
    }
  }
  return consonants
}

func countWords(string: String) -> Int {
  var words = 0
  for character in string.characters {
    if character == " " {
      words += 1
    }
  }
  return words + 1
}

func countUppercaseLetters(string: String) -> Int {
  var uppercaseLetters = 0
  for character in string.characters {
    if character == "A" || character == "B" || character == "C" || character == "D" || character == "E" || character == "F" || character == "G" || character == "H" || character == "I" || character == "J" || character == "K" || character == "L" || character == "M" || character == "N" || character == "O" || character == "P" || character == "Q" || character == "R" || character == "S" || character == "T" || character == "U" || character == "V" || character == "W" || character == "X" || character == "Y" || character == "Z" {
      uppercaseLetters += 1
    }
  }
  return uppercaseLetters
}
```swift
// Given a string, find out how many distinct characters (regardless of case) does it consist of
// countDistinctCharacters(string: "xyzXYZ") == 3
// countDistinctCharacters(string: "Jerry") == 4
func countDistinctCharacters(string: String) -> Int {
  var distinctCharacters = Set<Character>()
  for character in string.characters {
    distinctCharacters.insert(character)
  }
  return distinctCharacters.count
}

// Given a string, find out how many vowels (a, e, i, o, u) does it consist of
// countVowels(string: "xyzXYZ") == 3
// countVowels(string: "Jerry") == 3
func countVowels(string: String) -> Int {
  var vowels = 0
  for character in string.characters {
    if character == "a" || character == "e" || character == "i" || character == "o" || character == "u" {
      vowels += 1
    }
  }
  return vowels
}

// Given a string, find out how many consonants (b, c, d, f, g, h, j, k, l, m, n, p, q, r, s, t, v, w, x, y, z) does it consist of
// countConsonants(string: "xyzXYZ") == 3
// countConsonants(string: "Jerry") == 5
func countConsonants(string: String) -> Int {
  var consonants = 0
  for character in string.characters {
    if character == "b" || character == "c" || character == "d" || character == "f" || character == "g" || character == "h" || character == "j" || character == "k" || character == "l" || character == "m" || character == "n" || character == "p" || character == "q" || character == "r" || character == "s" || character == "t" || character == "v" || character == "w" || character == "x" || character == "y" || character == "z" {
      consonants += 1
    }
  }
  return consonants
}

// Given a string, find out how many words does it consist of
// countWords(string: "xyzXYZ") == 1
// countWords(string: "Jerry") == 1
// countWords(string: "Jerry is a good boy") == 3
func countWords(string: String) -> Int {
  var words = 0
  for character in string.characters {
    if character == " " {
      words += 1
    }
  }
  return words + 1
}

// Given a string, find out how many uppercase letters does it consist of
// countUppercaseLetters(string: "xyzXYZ") == 3
// countUppercaseLetters(string: "Jerry") == 0
func countUppercaseLetters(string: String) -> Int {
  var uppercaseLetters = 0
  for character in string.characters {
    if character == "A" || character == "B" || character == "C" || character == "D" || character == "E" || character == "F" || character == "G" || character == "H" || character == "I" || character == "J" || character == "K" || character == "L" || character == "M" || character == "N" || character == "O" || character == "P" || character == "Q" || character == "R" || character == "S" || character == "T" || character == "U" || character == "V" || character == "W" || character == "X" || character == "Y" || character == "Z" {
      uppercaseLetters += 1
    }
  }
  return uppercaseLetters
}

// Given a string, find out how many lowercase letters does it consist of
// countLowercaseLetters(string: "xyzXYZ") == 3
// countLowercaseLetters(string: "Jerry") == 3
func countLowercaseLetters(string: String) -> Int {
  var lowercaseLetters = 0
  for character in string.characters {
    if character == "a" || character == "b" || character == "c" || character == "d" || character == "e" || character == "f" || character == "g" || character == "h" || character == "i" || character == "j" || character == "k" || character == "l" || character == "m" || character == "n" || character == "o" || character == "p" || character == "q" || character == "r" || character == "s" || character == "t" || character == "u" ||
for character in string.characters { // 'characters' is unavailable: Please use String directly
for character in string.characters { // 'characters' is unavailable: Please use String directly
for character in string.characters { // 'characters' is unavailable: Please use String directly
for character in string.characters { // 'characters' is unavailable: Please use String directly
for character in string.characters { // 'characters' is unavailable: Please use String directly

func countDistinctCharacters(string: String) -> Int {
    var distinctCharacters = Set<Character>()
    for character in string.characters {
        distinctCharacters.insert(character)
    }
    return distinctCharacters.count
}

func findMaxDifference(array: [Int]) -> Int {
    var maxDifference = 0
    for index in 0..<array.count {
        for index2 in index+1..<array.count {
            if array[index2] - array[index] > maxDifference {
                maxDifference = array[index2] - array[index]
            }
        }
    }
    return maxDifference
}

func findMaxProduct(array: [Int]) -> Int {
    var maxProduct = 0
    for index in 0..<array.count {
        for index2 in index+1..<array.count {
            if array[index2] * array[index] > maxProduct {
                maxProduct = array[index2] * array[index]
            }
        }
    }
    return maxProduct
}
```swift
// Given a string, find out how many distinct characters (regardless of case) does it consist of
// countDistinctCharacters(string: "xyzXYZ") == 3
// countDistinctCharacters(string: "Jerry") == 4
func countDistinctCharacters(string: String) -> Int {
    var distinctCharacters = Set<Character>()
    for character in string.characters {
        distinctCharacters.insert(character)
    }
    return distinctCharacters.count
}

// Given an array of integers, find the maximum difference between two elements
// findMaxDifference(array: [1, 2, 3, 4, 5]) == 4
// findMaxDifference(array: [1, 2, 3, 4, 5, 6]) == 5
// findMaxDifference(array: [1, 2, 3, 4, 5, 6, 7]) == 6
// findMaxDifference(array: [1, 2, 3, 4, 5, 6, 7, 8]) == 7
// findMaxDifference(array: [1, 2, 3, 4, 5, 6, 7, 8, 9]) == 8
// findMaxDifference(array: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 9
func findMaxDifference(array: [Int]) -> Int {
    var maxDifference = 0
    for index in 0..<array.count {
        for index2 in index+1..<array.count {
            if array[index2] - array[index] > maxDifference {
                maxDifference = array[index2] - array[index]
            }
        }
    }
    return maxDifference
}

// Given an array of integers, find the maximum product of two elements
// findMaxProduct(array: [1, 2, 3, 4, 5]) == 20
// findMaxProduct(array: [1, 2, 3, 4, 5, 6]) == 72
// findMaxProduct(array: [1, 2, 3, 4, 5, 6, 7]) == 84
// findMaxProduct(array: [1, 2, 3, 4, 5, 6, 7, 8]) == 96
// findMaxProduct(array: [1, 2, 3, 4, 5, 6, 7, 8, 9]) == 108
// findMaxProduct(array: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 120
func findMaxProduct(array: [Int]) -> Int {
    var maxProduct = 0
    for index in 0..<array.count {
        for index2 in index+1..<array.count {
            if array[index2] * array[index] > maxProduct {
                maxProduct = array[index2] * array[index]
            }
        }
    }
    return maxProduct
}

// Given an array of integers, find the maximum product of two elements
// findMaxProduct(array: [1, 2, 3, 4, 5]) == 20
// findMaxProduct(array: [1, 2, 3, 4, 5, 6]) == 72
// findMaxProduct(array: [1, 2, 3, 4, 5, 6, 7]) == 84
// findMaxProduct(array: [1, 2, 3, 4, 5, 6, 7, 8]) == 96
// findMaxProduct(array: [1, 2, 3, 4, 5, 6, 7, 8, 9]) == 108
// findMaxProduct(array: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 120
func findMaxProduct(array: [Int]) -> Int {
    var maxProduct = 0
    for index in 0..<array.count {
        for index2 in index+1..<array.count {
            if array[index2] * array[index] > maxProduct {
                maxProduct = array[index2] * array[index]
            }
        }
    }
    return maxProduct
}

// Given an array of integers, find the minimum difference between two elements
// findMinDifference(array: [1, 2,
for character in string.characters { // 'characters' is unavailable: Please use String directly

func countDistinctCharacters(string: String) -> Int {
    var charSet = Set<Character>()
    for char in string.characters {
        charSet.insert(char)
    }
    return charSet.count
}

func isPalindrome(string: String) -> Bool {
    var charArray = [Character]()
    for char in string.characters {
        charArray.append(char)
    }
    var left = 0
    var right = charArray.count - 1
    while left < right {
        if charArray[left] != charArray[right] {
            return false
        }
        left += 1
        right -= 1
    }
    return true
}
```swift
// Given a string, find out how many distinct characters (regardless of case) does it consist of
// countDistinctCharacters(string: "xyzXYZ") == 3
// countDistinctCharacters(string: "Jerry") == 4
func countDistinctCharacters(string: String) -> Int {
    var charSet = Set<Character>()
    for char in string.characters {
        charSet.insert(char)
    }
    return charSet.count
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "racecar") == true
// isPalindrome(string: "racecar") == true
// isPalindrome(string: "racecar") == true
func isPalindrome(string: String) -> Bool {
    var charArray = [Character]()
    for char in string.characters {
        charArray.append(char)
    }
    var left = 0
    var right = charArray.count - 1
    while left < right {
        if charArray[left] != charArray[right] {
            return false
        }
        left += 1
        right -= 1
    }
    return true
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "racecar") == true
// isPalindrome(string: "racecar") == true
// isPalindrome(string: "racecar") == true
func isPalindrome(string: String) -> Bool {
    var charArray = [Character]()
    for char in string.characters {
        charArray.append(char)
    }
    var left = 0
    var right = charArray.count - 1
    while left < right {
        if charArray[left] != charArray[right] {
            return false
        }
        left += 1
        right -= 1
    }
    return true
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "racecar") == true
// isPalindrome(string: "racecar") == true
// isPalindrome(string: "racecar") == true
func isPalindrome(string: String) -> Bool {
    var charArray = [Character]()
    for char in string.characters {
        charArray.append(char)
    }
    var left = 0
    var right = charArray.count - 1
    while left < right {
        if charArray[left] != charArray[right] {
            return false
        }
        left += 1
        right -= 1
    }
    return true
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "racecar") == true
// isPalindrome(string: "racecar") == true
// isPalindrome(string: "racecar") == true
func isPalindrome(string: String) -> Bool {
    var charArray = [Character]()
    for char in string.characters {
        charArray.append(char)
    }
    var left = 0
    var right = charArray.count - 1
    while left < right {
        if charArray[left] != charArray[right] {
            return false
        }
        left += 1
        right -= 1
    }
    return true
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "racecar") == true
// isPalindrome(string: "racecar") == true
// isPalindrome(string: "racecar") == true
func isPalindrome(string: String) -> Bool {
    var charArray = [Character]()
    for char in string.characters {
        charArray.append(char)
    }
    var left = 0
    var right = charArray.count - 1
    while left < right {
        if charArray[left] != charArray[right] {
            return false
        }
        left += 1
        right -= 1
    }
    return true
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "racecar") == true
// isPalindrome(string: "racecar") == true
// isPalindrome(string: "racecar") == true
func isPalindrome(string: String) -> Bool {
    var charArray = [Character]()
    for char in string.characters {
        charArray.append(char)
    }
    var left = 0
    var right = charArray.count - 1
    while left < right {
        if charArray[left] != charArray[right] {
            return false
        }
        left += 1
        right -= 1
    }
    return true
}

// Given a string,
for char in string.characters { // 'characters' is unavailable: Please use String directly
for char in string.characters { // 'characters' is unavailable: Please use String directly

func countDistinctCharacters(string: String) -> Int {
    var distinctCharacters = [Character]()
    for character in string {
        if !distinctCharacters.contains(character) {
            distinctCharacters.append(character)
        }
    }
    return distinctCharacters.count
}
```swift
// Given a string, find out how many distinct characters (regardless of case) does it consist of
// countDistinctCharacters(string: "xyzXYZ") == 3
// countDistinctCharacters(string: "Jerry") == 4
func countDistinctCharacters(string: String) -> Int {
    var distinctCharacters = [Character]()
    for character in string {
        if !distinctCharacters.contains(character) {
            distinctCharacters.append(character)
        }
    }
    return distinctCharacters.count
}
<|file_separator|>
 // XCTAssertTrue failed

func countDistinctCharacters(string: String) -> Int {
    var charSet = Set<Character>()
    for char in string.lowercased() {
        charSet.insert(char)
    }
    return charSet.count
}

func isPalindrome(string: String) -> Bool {
    for i in 0..<string.count / 2 {
        if string[string.index(string.startIndex, offsetBy: i)] != string[string.index(string.startIndex, offsetBy: string.count - i - 1)] {
            return false
        }
    }
    return true
}

func isPalindrome(string: String) -> Bool {
    return string == String(string.reversed())
}
```swift
// Given a string, find out how many distinct characters (regardless of case) does it consist of
// countDistinctCharacters(string: "xyzXYZ") == 3
// countDistinctCharacters(string: "Jerry") == 4
func countDistinctCharacters(string: String) -> Int {
    var charSet = Set<Character>()
    for char in string.lowercased() {
        charSet.insert(char)
    }
    return charSet.count
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "abcba") == true
// isPalindrome(string: "xyz") == false
func isPalindrome(string: String) -> Bool {
    for i in 0..<string.count / 2 {
        if string[string.index(string.startIndex, offsetBy: i)] != string[string.index(string.startIndex, offsetBy: string.count - i - 1)] {
            return false
        }
    }
    return true
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "abcba") == true
// isPalindrome(string: "xyz") == false
func isPalindrome(string: String) -> Bool {
    return string == String(string.reversed())
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "abcba") == true
// isPalindrome(string: "xyz") == false
func isPalindrome(string: String) -> Bool {
    return string == String(string.reversed())
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "abcba") == true
// isPalindrome(string: "xyz") == false
func isPalindrome(string: String) -> Bool {
    return string == String(string.reversed())
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "abcba") == true
// isPalindrome(string: "xyz") == false
func isPalindrome(string: String) -> Bool {
    return string == String(string.reversed())
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "abcba") == true
// isPalindrome(string: "xyz") == false
func isPalindrome(string: String) -> Bool {
    return string == String(string.reversed())
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "abcba") == true
// isPalindrome(string: "xyz") == false
func isPalindrome(string: String) -> Bool {
    return string == String(string.reversed())
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "abcba") == true
// isPalindrome(string: "xyz") == false
func isPalindrome(string: String) -> Bool {
    return string == String(string.reversed())
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "abcba") == true
// isPalindrome(string: "xyz") == false
func isPalindrome(string: String) -> Bool {
    return string == String(string.reversed())
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "abcba") == true
// isPalindrome(string: "xyz") == false
func isPalindrome(string: String) -> Bool {
    return string == String(string.reversed())
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "abcba") == true
// isPalindrome(string: "xyz") == false
func isPalindrome(string: String) -> Bool {
    return string == String(string.reversed())
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "abcba") == true
// isPalindrome(string: "xyz") == false
func isPalindrome(string: String) -> Bool {
    return string == String(string.reversed())
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "abcba") == true
// isPalindrome(string: "xyz") == false
func isPalindrome(string: String) -> Bool {
    return string == String(string.reversed())
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "abcba") == true
// isPalindrome(string: "xyz") == false
func isPalindrome(string: String) -> Bool {
    return string == String(string.reversed())
}

// Given a string, find out if it is a palindrome
// isPalindrome(string: "abcba") == true
// isPalindrome(string: "xyz") == false
func
func isPalindrome(string: String) -> Bool { // invalid redeclaration of 'isPalindrome(string:)'

func countDistinctCharacters(string: String) -> Int {
    var distinctCharacters = Set<Character>()
    for character in string.characters {
        distinctCharacters.insert(character)
    }
    return distinctCharacters.count
}

func countVowels(string: String) -> Int {
    var vowels = Set<Character>()
    vowels.insert("a")
    vowels.insert("e")
    vowels.insert("i")
    vowels.insert("o")
    vowels.insert("u")
    var count = 0
    for character in string.characters {
        if vowels.contains(character) {
            count += 1
        }
    }
    return count
}

func countConsonants(string: String) -> Int {
    var consonants = Set<Character>()
    consonants.insert("b")
    consonants.insert("c")
    consonants.insert("d")
    consonants.insert("f")
    consonants.insert("g")
    consonants.insert("h")
    consonants.insert("j")
    consonants.insert("k")
    consonants.insert("l")
    consonants.insert("m")
    consonants.insert("n")
    consonants.insert("p")
    consonants.insert("q")
    consonants.insert("r")
    consonants.insert("s")
    consonants.insert("t")
    consonants.insert("v")
    consonants.insert("w")
    consonants.insert("x")
    consonants.insert("y")
    consonants.insert("z")
    var count = 0
    for character in string.characters {
        if consonants.contains(character) {
            count += 1
        }
    }
    return count
}

func countWords(string: String) -> Int {
    var words = Set<String>()
    var word = ""
    for character in string.characters {
        if character == " " {
            words.insert(word)
            word = ""
        } else {
            word += String(character)
        }
    }
    words.insert(word)
    return words.count
}
```swift
// Given a string, find out how many distinct characters (regardless of case) does it consist of
// countDistinctCharacters(string: "xyzXYZ") == 3
// countDistinctCharacters(string: "Jerry") == 4
func countDistinctCharacters(string: String) -> Int {
    var distinctCharacters = Set<Character>()
    for character in string.characters {
        distinctCharacters.insert(character)
    }
    return distinctCharacters.count
}

// Given a string, find out how many vowels (a, e, i, o, u) does it consist of
// countVowels(string: "xyzXYZ") == 0
// countVowels(string: "Jerry") == 3
func countVowels(string: String) -> Int {
    var vowels = Set<Character>()
    vowels.insert("a")
    vowels.insert("e")
    vowels.insert("i")
    vowels.insert("o")
    vowels.insert("u")
    var count = 0
    for character in string.characters {
        if vowels.contains(character) {
            count += 1
        }
    }
    return count
}

// Given a string, find out how many consonants (b, c, d, f, g, h, j, k, l, m, n, p, q, r, s, t, v, w, x, y, z) does it consist of
// countConsonants(string: "xyzXYZ") == 0
// countConsonants(string: "Jerry") == 10
func countConsonants(string: String) -> Int {
    var consonants = Set<Character>()
    consonants.insert("b")
    consonants.insert("c")
    consonants.insert("d")
    consonants.insert("f")
    consonants.insert("g")
    consonants.insert("h")
    consonants.insert("j")
    consonants.insert("k")
    consonants.insert("l")
    consonants.insert("m")
    consonants.insert("n")
    consonants.insert("p")
    consonants.insert("q")
    consonants.insert("r")
    consonants.insert("s")
    consonants.insert("t")
    consonants.insert("v")
    consonants.insert("w")
    consonants.insert("x")
    consonants.insert("y")
    consonants.insert("z")
    var count = 0
    for character in string.characters {
        if consonants.contains(character) {
            count += 1
        }
    }
    return count
}

// Given a string, find out how many words (separated by spaces) does it consist of
// countWords(string: "xyzXYZ") == 0
// countWords(string: "Jerry") == 1
// countWords(string: "Jerry is a good boy") == 3
func countWords(string: String) -> Int {
    var words = Set<String>()
    var word = ""
    for character in string.characters {
        if character == " " {
            words.insert(word)
            word = ""
        } else {
            word += String(character)
        }
    }
    words.insert(word)
    return words.count
}

// Given a string, find out how many words (separated by spaces) does it consist of
// countWords(string: "xyzXYZ") == 0
// countWords(string: "Jerry") == 1
// countWords(string: "Jerry is a good boy") == 3
func countWords(string: String) -> Int {
    var words = Set<String>()
    var word = ""
    for character in string.characters {
        if character == " " {
            words.insert(word)
            word = ""
        } else {
            word += String(character)
        }
    }
    words.insert(word)
    return words.count
}

// Given a string, find out how many words (separated by spaces) does it consist of
// countWords(string: "xyzXYZ") == 0
// countWords(string: "Jerry") == 1
// countWords(string: "Jerry is a good boy") == 3
func countWords(string: String) -> Int {
    var words = Set<String>()
    var word = ""
    for character in string.characters {
        if character == " " {
            words.insert(word)
            word = ""
        } else {
            word += String(character)
        }
    
for character in string.characters { // 'characters' is unavailable: Please use String directly
for character in string.characters { // 'characters' is unavailable: Please use String directly
for character in string.characters { // 'characters' is unavailable: Please use String directly
for character in string.characters { // 'characters' is unavailable: Please use String directly

func countDistinctCharacters(string: String) -> Int {
    var distinctCharacters = [Character]()
    for char in string {
        if !distinctCharacters.contains(char) {
            distinctCharacters.append(char)
        }
    }
    return distinctCharacters.count
}

func countVowels(string: String) -> Int {
    var vowels = [Character]()
    for char in string {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            vowels.append(char)
        }
    }
    return vowels.count
}

func countConsonants(string: String) -> Int {
    var consonants = [Character]()
    for char in string {
        if char != "a" && char != "e" && char != "i" && char != "o" && char != "u" {
            consonants.append(char)
        }
    }
    return consonants.count
}

func countDigits(string: String) -> Int {
    var digits = [Character]()
    for char in string {
        if char == "1" || char == "2" || char == "3" || char == "4" || char == "5" || char == "6" || char == "7" || char == "8" || char == "9" {
            digits.append(char)
        }
    }
    return digits.count
}
```swift
// Given a string, find out how many distinct characters (regardless of case) does it consist of
// countDistinctCharacters(string: "xyzXYZ") == 3
// countDistinctCharacters(string: "Jerry") == 4
func countDistinctCharacters(string: String) -> Int {
    var distinctCharacters = [Character]()
    for char in string {
        if !distinctCharacters.contains(char) {
            distinctCharacters.append(char)
        }
    }
    return distinctCharacters.count
}

// Given a string, find out how many vowels (regardless of case) does it consist of
// countVowels(string: "xyzXYZ") == 3
// countVowels(string: "Jerry") == 3
// countVowels(string: "a") == 1
// countVowels(string: "e") == 1
// countVowels(string: "i") == 1
// countVowels(string: "o") == 1
// countVowels(string: "u") == 1
func countVowels(string: String) -> Int {
    var vowels = [Character]()
    for char in string {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            vowels.append(char)
        }
    }
    return vowels.count
}

// Given a string, find out how many consonants (regardless of case) does it consist of
// countConsonants(string: "xyzXYZ") == 3
// countConsonants(string: "Jerry") == 4
// countConsonants(string: "a") == 0
// countConsonants(string: "e") == 0
// countConsonants(string: "i") == 0
// countConsonants(string: "o") == 0
// countConsonants(string: "u") == 0
func countConsonants(string: String) -> Int {
    var consonants = [Character]()
    for char in string {
        if char != "a" && char != "e" && char != "i" && char != "o" && char != "u" {
            consonants.append(char)
        }
    }
    return consonants.count
}

// Given a string, find out how many digits (regardless of case) does it consist of
// countDigits(string: "xyzXYZ") == 0
// countDigits(string: "Jerry") == 0
// countDigits(string: "1") == 1
// countDigits(string: "2") == 1
// countDigits(string: "3") == 1
// countDigits(string: "4") == 1
// countDigits(string: "5") == 1
// countDigits(string: "6") == 1
// countDigits(string: "7") == 1
// countDigits(string: "8") == 1
// countDigits(string: "9") == 1
func countDigits(string: String) -> Int {
    var digits = [Character]()
    for char in string {
        if char == "1" || char == "2" || char == "3" || char == "4" || char == "5" || char == "6" || char == "7" || char == "8" || char == "9" {
            digits.append(char)
        }
    }
    return digits.count
}

// Given a string, find out how many spaces (regardless of case) does it consist of
// countSpaces(string: "xyzXYZ") == 0
// countSpaces(string: "Jerry") == 0
// countSpaces(string: " ") == 1
// countSpaces(string: "  ") == 2
// countSpaces(string: "   ") == 3
// countSpaces(string: "    ") == 4
// countSpaces(string: "     ") == 5
// countSpaces(string: "      ") == 6
// countSpaces(string: "       ") == 7
// countSpaces(string: "        ") == 8
// countSpaces(string: "         ") == 9
// countSpaces(string: "          ") == 10
// countSpaces(string: "           ") == 11
// countSpaces(string: "            ") == 12
// countSpaces(string: "             ") == 13
// countSpaces(string: "              ") == 14
// countSpaces(string: "               ") == 15
// countSpaces(string: "                ") == 16
// countSpaces(string: "                 ") == 17
// countSpaces(string: "                  ") == 
 // XCTAssertTrue failed

func countDistinctCharacters(string: String) -> Int {
    var distinctCharacters = [Character]()
    for character in string.characters {
        if !distinctCharacters.contains(character) {
            distinctCharacters.append(character)
        }
    }
    return distinctCharacters.count
}
```swift
// Given a string, find out how many distinct characters (regardless of case) does it consist of
// countDistinctCharacters(string: "xyzXYZ") == 3
// countDistinctCharacters(string: "Jerry") == 4
func countDistinctCharacters(string: String) -> Int {
    var distinctCharacters = [Character]()
    for character in string.characters {
        if !distinctCharacters.contains(character) {
            distinctCharacters.append(character)
        }
    }
    return distinctCharacters.count
}
<|file_separator|>
for character in string.characters { // 'characters' is unavailable: Please use String directly

func countDistinctCharacters(string: String) -> Int {
    var distinctCharacters = Set<Character>()
    for character in string {
        distinctCharacters.insert(character)
    }
    return distinctCharacters.count
}

func countVowels(string: String) -> Int {
    var vowels = 0
    for character in string {
        if character == "a" || character == "e" || character == "i" || character == "o" || character == "u" {
            vowels += 1
        }
    }
    return vowels
}

func countConsonants(string: String) -> Int {
    var consonants = 0
    for character in string {
        if character != "a" && character != "e" && character != "i" && character != "o" && character != "u" {
            consonants += 1
        }
    }
    return consonants
}

func countWords(string: String) -> Int {
    var words = 0
    for character in string {
        if character == " " {
            words += 1
        }
    }
    return words + 1
}
```swift
// Given a string, find out how many distinct characters (regardless of case) does it consist of
// countDistinctCharacters(string: "xyzXYZ") == 3
// countDistinctCharacters(string: "Jerry") == 4
func countDistinctCharacters(string: String) -> Int {
    var distinctCharacters = Set<Character>()
    for character in string {
        distinctCharacters.insert(character)
    }
    return distinctCharacters.count
}

// Given a string, find out how many vowels (a, e, i, o, u) does it consist of
// countVowels(string: "xyzXYZ") == 0
// countVowels(string: "Jerry") == 3
func countVowels(string: String) -> Int {
    var vowels = 0
    for character in string {
        if character == "a" || character == "e" || character == "i" || character == "o" || character == "u" {
            vowels += 1
        }
    }
    return vowels
}

// Given a string, find out how many consonants (all other characters) does it consist of
// countConsonants(string: "xyzXYZ") == 3
// countConsonants(string: "Jerry") == 6
func countConsonants(string: String) -> Int {
    var consonants = 0
    for character in string {
        if character != "a" && character != "e" && character != "i" && character != "o" && character != "u" {
            consonants += 1
        }
    }
    return consonants
}

// Given a string, find out how many words (separated by spaces) does it consist of
// countWords(string: "xyzXYZ") == 1
// countWords(string: "Jerry") == 1
func countWords(string: String) -> Int {
    var words = 0
    for character in string {
        if character == " " {
            words += 1
        }
    }
    return words + 1
}

// Given a string, find out how many words (separated by spaces) does it consist of
// countWords(string: "xyzXYZ") == 1
// countWords(string: "Jerry") == 1
func countWords(string: String) -> Int {
    var words = 0
    for character in string {
        if character == " " {
            words += 1
        }
    }
    return words + 1
}

// Given a string, find out how many words (separated by spaces) does it consist of
// countWords(string: "xyzXYZ") == 1
// countWords(string: "Jerry") == 1
func countWords(string: String) -> Int {
    var words = 0
    for character in string {
        if character == " " {
            words += 1
        }
    }
    return words + 1
}

// Given a string, find out how many words (separated by spaces) does it consist of
// countWords(string: "xyzXYZ") == 1
// countWords(string: "Jerry") == 1
func countWords(string: String) -> Int {
    var words = 0
    for character in string {
        if character == " " {
            words += 1
        }
    }
    return words + 1
}

// Given a string, find out how many words (separated by spaces) does it consist of
// countWords(string: "xyzXYZ") == 1
// countWords(string: "Jerry") == 1
func countWords(string: String) -> Int {
    var words = 0
    for character in string {
        if character == " " {
            words += 1
        }
    }
    return words + 1
}

// Given a string, find out how many words (separated by spaces) does it consist of
// countWords(string: "xyzXYZ") == 1
// countWords(string: "Jerry") == 1
func countWords(string: String) -> Int {
    var words = 0
    for character in string {
        if character == " " {
            words += 1
        }
    }
    return words + 1
}

// Given a string, find out how many words (separated by spaces) does it consist of
// countWords(string: "xyzXYZ") == 1
// countWords(string: "Jerry") == 1
func countWords(string: String) -> Int {
    var words = 0
    for character in string {
        if character == " " {
            words += 1
        }
    }
    return words + 1
}

// Given a string,
 // XCTAssertTrue failed

func parseMusic(musicString: String) -> [Int] {
    var result = [Int]()
    var currentNote = ""
    var currentBeat = 0
    for char in musicString {
        if char == "o" {
            currentNote = "o"
            currentBeat = 4
        } else if char == "o|" {
            currentNote = "o|"
            currentBeat = 2
        } else if char == ".|" {
            currentNote = ".|"
            currentBeat = 1
        } else if char == "|" {
            result.append(currentBeat)
        }
    }
    return result
}
```swift
// Input to this function is a string representing musical notes in a special ASCII format.
// Your task is to parse this string and return array of integers corresponding to how many beats does each
// not last.
// Here is a legend:
// 'o' - whole note, lasts four beats
// 'o|' - half note, lasts two beats
// '.|' - quater note, lasts one beat
// parseMusic(musicString: "o o| .| o| o| .| .| .| .| o o") == [4, 2, 1, 2, 2, 1, 1, 1, 1, 4, 4]
func parseMusic(musicString: String) -> [Int] {
    var result = [Int]()
    var currentNote = ""
    var currentBeat = 0
    for char in musicString {
        if char == "o" {
            currentNote = "o"
            currentBeat = 4
        } else if char == "o|" {
            currentNote = "o|"
            currentBeat = 2
        } else if char == ".|" {
            currentNote = ".|"
            currentBeat = 1
        } else if char == "|" {
            result.append(currentBeat)
        }
    }
    return result
}
<|file_separator|>
} else if char == "o|" { // binary operator '==' cannot be applied to operands of type 'Character' and 'String'
} else if char == ".|" { // binary operator '==' cannot be applied to operands of type 'Character' and 'String'

func parseMusic(musicString: String) -> [Int] {
    var result = [Int]()
    var currentNote = ""
    for char in musicString {
        if char == "|" {
            result.append(parseNote(note: currentNote))
            currentNote = ""
        } else {
            currentNote += char
        }
    }
    result.append(parseNote(note: currentNote))
    return result
}

func parseNote(note: String) -> Int {
    switch note {
    case "o":
        return 4
    case "o|":
        return 2
    case ".|":
        return 1
    default:
        return 0
    }
}
```swift
// Input to this function is a string representing musical notes in a special ASCII format.
// Your task is to parse this string and return array of integers corresponding to how many beats does each
// not last.
// Here is a legend:
// 'o' - whole note, lasts four beats
// 'o|' - half note, lasts two beats
// '.|' - quater note, lasts one beat
// parseMusic(musicString: "o o| .| o| o| .| .| .| .| o o") == [4, 2, 1, 2, 2, 1, 1, 1, 1, 4, 4]
func parseMusic(musicString: String) -> [Int] {
    var result = [Int]()
    var currentNote = ""
    for char in musicString {
        if char == "|" {
            result.append(parseNote(note: currentNote))
            currentNote = ""
        } else {
            currentNote += char
        }
    }
    result.append(parseNote(note: currentNote))
    return result
}

func parseNote(note: String) -> Int {
    switch note {
    case "o":
        return 4
    case "o|":
        return 2
    case ".|":
        return 1
    default:
        return 0
    }
}
<|file_separator|>
currentNote += char // cannot convert value of type 'Character' to expected argument type 'String'

func parseMusic(musicString: String) -> [Int] {
    var result = [Int]()
    var currentNote = ""
    var currentNoteCount = 0
    
    for char in musicString.characters {
        if char == "o" {
            currentNote = "o"
            currentNoteCount += 1
        } else if char == "|" {
            if currentNote == "o" {
                currentNoteCount += 1
            } else {
                result.append(currentNoteCount)
                currentNoteCount = 1
            }
        } else if char == "." {
            if currentNote == "o" {
                currentNoteCount += 2
            } else {
                result.append(currentNoteCount)
                currentNoteCount = 2
            }
        }
    }
    
    if currentNoteCount > 0 {
        result.append(currentNoteCount)
    }
    
    return result
}
```swift
// Input to this function is a string representing musical notes in a special ASCII format.
// Your task is to parse this string and return array of integers corresponding to how many beats does each
// not last.
// Here is a legend:
// 'o' - whole note, lasts four beats
// 'o|' - half note, lasts two beats
// '.|' - quater note, lasts one beat
// parseMusic(musicString: "o o| .| o| o| .| .| .| .| o o") == [4, 2, 1, 2, 2, 1, 1, 1, 1, 4, 4]
func parseMusic(musicString: String) -> [Int] {
    var result = [Int]()
    var currentNote = ""
    var currentNoteCount = 0
    
    for char in musicString.characters {
        if char == "o" {
            currentNote = "o"
            currentNoteCount += 1
        } else if char == "|" {
            if currentNote == "o" {
                currentNoteCount += 1
            } else {
                result.append(currentNoteCount)
                currentNoteCount = 1
            }
        } else if char == "." {
            if currentNote == "o" {
                currentNoteCount += 2
            } else {
                result.append(currentNoteCount)
                currentNoteCount = 2
            }
        }
    }
    
    if currentNoteCount > 0 {
        result.append(currentNoteCount)
    }
    
    return result
}
<|file_separator|>
for char in musicString.characters { // 'characters' is unavailable: Please use String directly

func parseMusic(musicString: String) -> [Int] {
    // TODO: implement this function
    return []
}
```swift
// Input to this function is a string representing musical notes in a special ASCII format.
// Your task is to parse this string and return array of integers corresponding to how many beats does each
// not last.
// Here is a legend:
// 'o' - whole note, lasts four beats
// 'o|' - half note, lasts two beats
// '.|' - quater note, lasts one beat
// parseMusic(musicString: "o o| .| o| o| .| .| .| .| o o") == [4, 2, 1, 2, 2, 1, 1, 1, 1, 4, 4]
func parseMusic(musicString: String) -> [Int] {
    // TODO: implement this function
    return []
}
<|file_separator|>
 // XCTAssertTrue failed

func parseMusic(musicString: String) -> [Int] {
    // TODO: Write your code here
    var result = [Int]()
    var current = 0
    for char in musicString {
        if char == "o" {
            current += 4
        } else if char == "o|" {
            current += 2
        } else if char == ".|" {
            current += 1
        } else if char == " " {
            result.append(current)
            current = 0
        }
    }
    result.append(current)
    return result
}
```swift
// Input to this function is a string representing musical notes in a special ASCII format.
// Your task is to parse this string and return array of integers corresponding to how many beats does each
// not last.
// Here is a legend:
// 'o' - whole note, lasts four beats
// 'o|' - half note, lasts two beats
// '.|' - quater note, lasts one beat
// parseMusic(musicString: "o o| .| o| o| .| .| .| .| o o") == [4, 2, 1, 2, 2, 1, 1, 1, 1, 4, 4]
func parseMusic(musicString: String) -> [Int] {
    // TODO: Write your code here
    var result = [Int]()
    var current = 0
    for char in musicString {
        if char == "o" {
            current += 4
        } else if char == "o|" {
            current += 2
        } else if char == ".|" {
            current += 1
        } else if char == " " {
            result.append(current)
            current = 0
        }
    }
    result.append(current)
    return result
}
<|file_separator|>
} else if char == "o|" { // binary operator '==' cannot be applied to operands of type 'Character' and 'String'
} else if char == ".|" { // binary operator '==' cannot be applied to operands of type 'Character' and 'String'

func parseMusic(musicString: String) -> [Int] {
    var result = [Int]()
    var currentNote = ""
    var currentBeat = 0
    for char in musicString {
        if char == "o" {
            currentNote = "o"
            currentBeat = 4
        } else if char == "o|" {
            currentNote = "o|"
            currentBeat = 2
        } else if char == ".|" {
            currentNote = ".|"
            currentBeat = 1
        } else if char == "|" {
            result.append(currentBeat)
            currentBeat = 0
        }
    }
    result.append(currentBeat)
    return result
}
```swift
// Input to this function is a string representing musical notes in a special ASCII format.
// Your task is to parse this string and return array of integers corresponding to how many beats does each
// not last.
// Here is a legend:
// 'o' - whole note, lasts four beats
// 'o|' - half note, lasts two beats
// '.|' - quater note, lasts one beat
// parseMusic(musicString: "o o| .| o| o| .| .| .| .| o o") == [4, 2, 1, 2, 2, 1, 1, 1, 1, 4, 4]
func parseMusic(musicString: String) -> [Int] {
    var result = [Int]()
    var currentNote = ""
    var currentBeat = 0
    for char in musicString {
        if char == "o" {
            currentNote = "o"
            currentBeat = 4
        } else if char == "o|" {
            currentNote = "o|"
            currentBeat = 2
        } else if char == ".|" {
            currentNote = ".|"
            currentBeat = 1
        } else if char == "|" {
            result.append(currentBeat)
            currentBeat = 0
        }
    }
    result.append(currentBeat)
    return result
}
<|file_separator|>
} else if char == "o|" { // binary operator '==' cannot be applied to operands of type 'Character' and 'String'
} else if char == ".|" { // binary operator '==' cannot be applied to operands of type 'Character' and 'String'

func parseMusic(musicString: String) -> [Int] {
    var result = [Int]()
    var currentNote = ""
    var currentBeat = 0
    for char in musicString {
        if char == "o" {
            currentNote = "o"
            currentBeat = 4
        } else if char == "o|" {
            currentNote = "o|"
            currentBeat = 2
        } else if char == ".|" {
            currentNote = ".|"
            currentBeat = 1
        } else if char == "|" {
            result.append(currentBeat)
            currentBeat = 0
        }
    }
    return result
}
```swift
// Input to this function is a string representing musical notes in a special ASCII format.
// Your task is to parse this string and return array of integers corresponding to how many beats does each
// not last.
// Here is a legend:
// 'o' - whole note, lasts four beats
// 'o|' - half note, lasts two beats
// '.|' - quater note, lasts one beat
// parseMusic(musicString: "o o| .| o| o| .| .| .| .| o o") == [4, 2, 1, 2, 2, 1, 1, 1, 1, 4, 4]
func parseMusic(musicString: String) -> [Int] {
    var result = [Int]()
    var currentNote = ""
    var currentBeat = 0
    for char in musicString {
        if char == "o" {
            currentNote = "o"
            currentBeat = 4
        } else if char == "o|" {
            currentNote = "o|"
            currentBeat = 2
        } else if char == ".|" {
            currentNote = ".|"
            currentBeat = 1
        } else if char == "|" {
            result.append(currentBeat)
            currentBeat = 0
        }
    }
    return result
}
<|file_separator|>
} else if char == "o|" { // binary operator '==' cannot be applied to operands of type 'Character' and 'String'
} else if char == ".|" { // binary operator '==' cannot be applied to operands of type 'Character' and 'String'

func parseMusic(musicString: String) -> [Int] {
    var result = [Int]()
    var currentNote = ""
    var currentNoteLength = 0
    for char in musicString {
        if char == "|" {
            if currentNoteLength == 0 {
                currentNoteLength = 1
            } else {
                currentNoteLength += 1
            }
        } else {
            if currentNoteLength == 0 {
                currentNote = String(char)
            } else {
                currentNoteLength += 1
                currentNote = currentNote + String(char)
            }
            if currentNoteLength == 4 {
                result.append(4)
                currentNoteLength = 0
                currentNote = ""
            } else if currentNoteLength == 2 {
                result.append(2)
                currentNoteLength = 0
                currentNote = ""
            } else if currentNoteLength == 1 {
                result.append(1)
                currentNoteLength = 0
                currentNote = ""
            }
        }
    }
    return result
}
```swift
// Input to this function is a string representing musical notes in a special ASCII format.
// Your task is to parse this string and return array of integers corresponding to how many beats does each
// not last.
// Here is a legend:
// 'o' - whole note, lasts four beats
// 'o|' - half note, lasts two beats
// '.|' - quater note, lasts one beat
// parseMusic(musicString: "o o| .| o| o| .| .| .| .| o o") == [4, 2, 1, 2, 2, 1, 1, 1, 1, 4, 4]
func parseMusic(musicString: String) -> [Int] {
    var result = [Int]()
    var currentNote = ""
    var currentNoteLength = 0
    for char in musicString {
        if char == "|" {
            if currentNoteLength == 0 {
                currentNoteLength = 1
            } else {
                currentNoteLength += 1
            }
        } else {
            if currentNoteLength == 0 {
                currentNote = String(char)
            } else {
                currentNoteLength += 1
                currentNote = currentNote + String(char)
            }
            if currentNoteLength == 4 {
                result.append(4)
                currentNoteLength = 0
                currentNote = ""
            } else if currentNoteLength == 2 {
                result.append(2)
                currentNoteLength = 0
                currentNote = ""
            } else if currentNoteLength == 1 {
                result.append(1)
                currentNoteLength = 0
                currentNote = ""
            }
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func parseMusic(musicString: String) -> [Int] {
    var result = [Int]()
    var currentNote = ""
    var currentNoteLength = 0
    for char in musicString {
        if char == "|" {
            result.append(currentNoteLength)
            currentNoteLength = 0
            currentNote = ""
        } else {
            currentNoteLength += 1
            currentNote += String(char)
        }
    }
    result.append(currentNoteLength)
    return result
}
```swift
// Input to this function is a string representing musical notes in a special ASCII format.
// Your task is to parse this string and return array of integers corresponding to how many beats does each
// not last.
// Here is a legend:
// 'o' - whole note, lasts four beats
// 'o|' - half note, lasts two beats
// '.|' - quater note, lasts one beat
// parseMusic(musicString: "o o| .| o| o| .| .| .| .| o o") == [4, 2, 1, 2, 2, 1, 1, 1, 1, 4, 4]
func parseMusic(musicString: String) -> [Int] {
    var result = [Int]()
    var currentNote = ""
    var currentNoteLength = 0
    for char in musicString {
        if char == "|" {
            result.append(currentNoteLength)
            currentNoteLength = 0
            currentNote = ""
        } else {
            currentNoteLength += 1
            currentNote += String(char)
        }
    }
    result.append(currentNoteLength)
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func parseMusic(musicString: String) -> [Int] {
    var result = [Int]()
    var note = ""
    for char in musicString {
        if char == "|" {
            result.append(note.count)
            note = ""
        } else {
            note += char
        }
    }
    result.append(note.count)
    return result
}
```swift
// Input to this function is a string representing musical notes in a special ASCII format.
// Your task is to parse this string and return array of integers corresponding to how many beats does each
// not last.
// Here is a legend:
// 'o' - whole note, lasts four beats
// 'o|' - half note, lasts two beats
// '.|' - quater note, lasts one beat
// parseMusic(musicString: "o o| .| o| o| .| .| .| .| o o") == [4, 2, 1, 2, 2, 1, 1, 1, 1, 4, 4]
func parseMusic(musicString: String) -> [Int] {
    var result = [Int]()
    var note = ""
    for char in musicString {
        if char == "|" {
            result.append(note.count)
            note = ""
        } else {
            note += char
        }
    }
    result.append(note.count)
    return result
}
<|file_separator|>
note += char // cannot convert value of type 'Character' to expected argument type 'String'

func howManyTimes(string: String, substring: String) -> Int {
    var count = 0
    var index = 0
    while index < string.count {
        if string.hasPrefix(substring, index) {
            count += 1
            index += substring.count
        } else {
            index += 1
        }
    }
    return count
}
```swift
// Find how many times a given substring can be found in the original string. Count overlaping cases.
// howManyTimes(string: "", substring: "a") == 0
// howManyTimes(string: "aaa", substring: "a") == 3
// howManyTimes(string: "aaaa", substring: "aa") == 3
func howManyTimes(string: String, substring: String) -> Int {
    var count = 0
    var index = 0
    while index < string.count {
        if string.hasPrefix(substring, index) {
            count += 1
            index += substring.count
        } else {
            index += 1
        }
    }
    return count
}
<|file_separator|>
if string.hasPrefix(substring, index) { // extra argument in call

func howManyTimes(string: String, substring: String) -> Int {
    var count = 0
    var index = 0
    while index < string.count {
        if string.hasPrefix(substring, index) {
            count += 1
            index += substring.count
        } else {
            index += 1
        }
    }
    return count
}
```swift
// Find how many times a given substring can be found in the original string. Count overlaping cases.
// howManyTimes(string: "", substring: "a") == 0
// howManyTimes(string: "aaa", substring: "a") == 3
// howManyTimes(string: "aaaa", substring: "aa") == 3
func howManyTimes(string: String, substring: String) -> Int {
    var count = 0
    var index = 0
    while index < string.count {
        if string.hasPrefix(substring, index) {
            count += 1
            index += substring.count
        } else {
            index += 1
        }
    }
    return count
}
<|file_separator|>
if string.hasPrefix(substring, index) { // extra argument in call

func howManyTimes(string: String, substring: String) -> Int {
    var count = 0
    var index = 0
    while index < string.count {
        if string.hasPrefix(substring, index) {
            count += 1
            index += substring.count
        } else {
            index += 1
        }
    }
    return count
}
```swift
// Find how many times a given substring can be found in the original string. Count overlaping cases.
// howManyTimes(string: "", substring: "a") == 0
// howManyTimes(string: "aaa", substring: "a") == 3
// howManyTimes(string: "aaaa", substring: "aa") == 3
func howManyTimes(string: String, substring: String) -> Int {
    var count = 0
    var index = 0
    while index < string.count {
        if string.hasPrefix(substring, index) {
            count += 1
            index += substring.count
        } else {
            index += 1
        }
    }
    return count
}

// Find the longest substring that can be found in the original string.
// longestSubstring(string: "") == ""
// longestSubstring(string: "aaa") == "aaa"
// longestSubstring(string: "aaaa") == "aaa"
// longestSubstring(string: "ab") == "b"
// longestSubstring(string: "abababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababab
if string.hasPrefix(substring, index) { // extra argument in call

func howManyTimes(string: String, substring: String) -> Int {
  var count = 0
  var index = 0
  while index < string.count {
    if string.hasPrefix(substring, index) {
      count += 1
      index += substring.count
    } else {
      index += 1
    }
  }
  return count
}

func longestSubstring(string: String) -> String {
  var longest = ""
  for i in 0..<string.count {
    for j in i..<string.count {
      let substring = string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j+1)]
      if substring.count > longest.count {
        longest = substring
      }
    }
  }
  return longest
}
```swift
// Find how many times a given substring can be found in the original string. Count overlaping cases.
// howManyTimes(string: "", substring: "a") == 0
// howManyTimes(string: "aaa", substring: "a") == 3
// howManyTimes(string: "aaaa", substring: "aa") == 3
func howManyTimes(string: String, substring: String) -> Int {
  var count = 0
  var index = 0
  while index < string.count {
    if string.hasPrefix(substring, index) {
      count += 1
      index += substring.count
    } else {
      index += 1
    }
  }
  return count
}

// Find the longest substring that can be found in the original string.
// longestSubstring(string: "aaa") == "aaa"
// longestSubstring(string: "aaaa") == "aaa"
// longestSubstring(string: "aaabbb") == "bbb"
func longestSubstring(string: String) -> String {
  var longest = ""
  for i in 0..<string.count {
    for j in i..<string.count {
      let substring = string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j+1)]
      if substring.count > longest.count {
        longest = substring
      }
    }
  }
  return longest
}

// Find the longest substring that can be found in the original string.
// longestSubstring(string: "aaa") == "aaa"
// longestSubstring(string: "aaaa") == "aaa"
// longestSubstring(string: "aaabbb") == "bbb"
func longestSubstring(string: String) -> String {
  var longest = ""
  for i in 0..<string.count {
    for j in i..<string.count {
      let substring = string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j+1)]
      if substring.count > longest.count {
        longest = substring
      }
    }
  }
  return longest
}

// Find the longest substring that can be found in the original string.
// longestSubstring(string: "aaa") == "aaa"
// longestSubstring(string: "aaaa") == "aaa"
// longestSubstring(string: "aaabbb") == "bbb"
func longestSubstring(string: String) -> String {
  var longest = ""
  for i in 0..<string.count {
    for j in i..<string.count {
      let substring = string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j+1)]
      if substring.count > longest.count {
        longest = substring
      }
    }
  }
  return longest
}

// Find the longest substring that can be found in the original string.
// longestSubstring(string: "aaa") == "aaa"
// longestSubstring(string: "aaaa") == "aaa"
// longestSubstring(string: "aaabbb") == "bbb"
func longestSubstring(string: String) -> String {
  var longest = ""
  for i in 0..<string.count {
    for j in i..<string.count {
      let substring = string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j+1)]
      if substring.count > longest.count {
        longest = substring
      }
    }
  }
  return longest
}

// Find the longest substring that can be found in the original string.
// longestSubstring(string: "aaa") == "aaa"
// longestSubstring(string: "aaaa") == "aaa"
// longestSubstring(string: "aaabbb") == "bbb"
func longestSubstring(string: String) -> String {
  var longest = ""
  for i in 0..<string.count {
    for j in i..<string.count {
      let substring = string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j+1)]
      if substring.count > longest.count {
        longest = substring
      }
    }
  }
  return longest
}

// Find the longest substring that can be found in the original string.
// longestSubstring(string: "aaa") == "aaa"
// longestSubstring(string: "aaaa") == "aaa"
// longestSubstring(string: "aaabbb") == "bbb"
func longestSubstring(string: String) -> String {
  var longest = ""
  for i in 0..<string.count {
    for j in i..<string.count {
      let substring = string[string.index(string.startIndex, offsetBy
if string.hasPrefix(substring, index) { // extra argument in call
longest = substring // cannot assign value of type 'Substring' to type 'String'

func howManyTimes(string: String, substring: String) -> Int {
    var count = 0
    var index = 0
    while index < string.count {
        if string.hasPrefix(substring, index) {
            count += 1
            index += substring.count
        } else {
            index += 1
        }
    }
    return count
}

func longestSubstring(string: String) -> String {
    var longest = ""
    for i in 0..<string.count {
        for j in i..<string.count {
            let substring = string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j + 1)]
            if substring.count > longest.count {
                longest = substring
            }
        }
    }
    return longest
}
```swift
// Find how many times a given substring can be found in the original string. Count overlaping cases.
// howManyTimes(string: "", substring: "a") == 0
// howManyTimes(string: "aaa", substring: "a") == 3
// howManyTimes(string: "aaaa", substring: "aa") == 3
func howManyTimes(string: String, substring: String) -> Int {
    var count = 0
    var index = 0
    while index < string.count {
        if string.hasPrefix(substring, index) {
            count += 1
            index += substring.count
        } else {
            index += 1
        }
    }
    return count
}

// Find the longest substring that can be found in the original string.
// longestSubstring(string: "aaa") == "aaa"
// longestSubstring(string: "aaaa") == "aaa"
// longestSubstring(string: "aaabbb") == "bbb"
// longestSubstring(string: "aaabbbccc") == "bbb"
func longestSubstring(string: String) -> String {
    var longest = ""
    for i in 0..<string.count {
        for j in i..<string.count {
            let substring = string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j + 1)]
            if substring.count > longest.count {
                longest = substring
            }
        }
    }
    return longest
}

// Find the longest substring that can be found in the original string.
// longestSubstring(string: "aaa") == "aaa"
// longestSubstring(string: "aaaa") == "aaa"
// longestSubstring(string: "aaabbb") == "bbb"
// longestSubstring(string: "aaabbbccc") == "bbb"
func longestSubstring(string: String) -> String {
    var longest = ""
    for i in 0..<string.count {
        for j in i..<string.count {
            let substring = string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j + 1)]
            if substring.count > longest.count {
                longest = substring
            }
        }
    }
    return longest
}

// Find the longest substring that can be found in the original string.
// longestSubstring(string: "aaa") == "aaa"
// longestSubstring(string: "aaaa") == "aaa"
// longestSubstring(string: "aaabbb") == "bbb"
// longestSubstring(string: "aaabbbccc") == "bbb"
func longestSubstring(string: String) -> String {
    var longest = ""
    for i in 0..<string.count {
        for j in i..<string.count {
            let substring = string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j + 1)]
            if substring.count > longest.count {
                longest = substring
            }
        }
    }
    return longest
}

// Find the longest substring that can be found in the original string.
// longestSubstring(string: "aaa") == "aaa"
// longestSubstring(string: "aaaa") == "aaa"
// longestSubstring(string: "aaabbb") == "bbb"
// longestSubstring(string: "aaabbbccc") == "bbb"
func longestSubstring(string: String) -> String {
    var longest = ""
    for i in 0..<string.count {
        for j in i..<string.count {
            let substring = string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j + 1)]
            if substring.count > longest.count {
                longest = substring
            }
        }
    }
    return longest
}

// Find the longest substring that can be found in the original string.
// longestSubstring(string: "aaa") == "aaa"
// longestSubstring(string: "aaaa") == "aaa"
// longestSubstring(string: "aaabbb") == "bbb"
// longestSubstring(string: "aaabbbccc") == "bbb"
func longestSubstring(string: String) -> String {
    var longest = ""
    for i in 0..<string.count {
        for j in i..<string.count {
            let substring = string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j + 1)]
            if substring.count > longest.count {
                longest = substring
            }
        }
    }
    return longest
}

// Find the longest substring that can be found in the original string.
// longestSubstring(string: "aaa") == "
if string.hasPrefix(substring, index) { // extra argument in call
longest = substring // cannot assign value of type 'Substring' to type 'String'

func howManyTimes(string: String, substring: String) -> Int {
    var count = 0
    for i in 0..<string.count {
        if string[string.index(string.startIndex, offsetBy: i)] == substring[substring.startIndex] {
            if string[string.index(string.startIndex, offsetBy: i + substring.count)] == substring[substring.index(substring.startIndex, offsetBy: substring.count - 1)] {
                count += 1
            }
        }
    }
    return count
}
```swift
// Find how many times a given substring can be found in the original string. Count overlaping cases.
// howManyTimes(string: "", substring: "a") == 0
// howManyTimes(string: "aaa", substring: "a") == 3
// howManyTimes(string: "aaaa", substring: "aa") == 3
func howManyTimes(string: String, substring: String) -> Int {
    var count = 0
    for i in 0..<string.count {
        if string[string.index(string.startIndex, offsetBy: i)] == substring[substring.startIndex] {
            if string[string.index(string.startIndex, offsetBy: i + substring.count)] == substring[substring.index(substring.startIndex, offsetBy: substring.count - 1)] {
                count += 1
            }
        }
    }
    return count
}
<|file_separator|>
 // Fatal error: String index is out of bounds

func howManyTimes(string: String, substring: String) -> Int {
    var count = 0
    var index = 0
    while index < string.count {
        if string.hasPrefix(substring, index) {
            count += 1
            index += substring.count
        } else {
            index += 1
        }
    }
    return count
}
```swift
// Find how many times a given substring can be found in the original string. Count overlaping cases.
// howManyTimes(string: "", substring: "a") == 0
// howManyTimes(string: "aaa", substring: "a") == 3
// howManyTimes(string: "aaaa", substring: "aa") == 3
func howManyTimes(string: String, substring: String) -> Int {
    var count = 0
    var index = 0
    while index < string.count {
        if string.hasPrefix(substring, index) {
            count += 1
            index += substring.count
        } else {
            index += 1
        }
    }
    return count
}
<|file_separator|>
if string.hasPrefix(substring, index) { // extra argument in call

func howManyTimes(string: String, substring: String) -> Int {
    var count = 0
    for i in 0..<string.count {
        if string.substring(with: NSRange(location: i, length: substring.count)) == substring {
            count += 1
        }
    }
    return count
}
```swift
// Find how many times a given substring can be found in the original string. Count overlaping cases.
// howManyTimes(string: "", substring: "a") == 0
// howManyTimes(string: "aaa", substring: "a") == 3
// howManyTimes(string: "aaaa", substring: "aa") == 3
func howManyTimes(string: String, substring: String) -> Int {
    var count = 0
    for i in 0..<string.count {
        if string.substring(with: NSRange(location: i, length: substring.count)) == substring {
            count += 1
        }
    }
    return count
}
<|file_separator|>
if string.substring(with: NSRange(location: i, length: substring.count)) == substring { // cannot convert value of type 'NSRange' (aka '_NSRange') to expected argument type 'Range<String.Index>'

func howManyTimes(string: String, substring: String) -> Int {
    var count = 0
    var index = 0
    while index < string.count {
        let startIndex = string.index(string.startIndex, offsetBy: index)
        let endIndex = string.index(string.startIndex, offsetBy: index + substring.count)
        if string[startIndex..<endIndex] == substring {
            count += 1
        }
        index += 1
    }
    return count
}
```swift
// Find how many times a given substring can be found in the original string. Count overlaping cases.
// howManyTimes(string: "", substring: "a") == 0
// howManyTimes(string: "aaa", substring: "a") == 3
// howManyTimes(string: "aaaa", substring: "aa") == 3
func howManyTimes(string: String, substring: String) -> Int {
    var count = 0
    var index = 0
    while index < string.count {
        let startIndex = string.index(string.startIndex, offsetBy: index)
        let endIndex = string.index(string.startIndex, offsetBy: index + substring.count)
        if string[startIndex..<endIndex] == substring {
            count += 1
        }
        index += 1
    }
    return count
}
<|file_separator|>
 // Fatal error: String index is out of bounds

func howManyTimes(string: String, substring: String) -> Int {
    var count = 0
    for i in 0..<string.count {
        if string[string.index(string.startIndex, offsetBy: i)] == substring[substring.startIndex] {
            if string[string.index(string.startIndex, offsetBy: i + substring.count)] == substring[substring.index(substring.startIndex, offsetBy: substring.count - 1)] {
                count += 1
            }
        }
    }
    return count
}
```swift
// Find how many times a given substring can be found in the original string. Count overlaping cases.
// howManyTimes(string: "", substring: "a") == 0
// howManyTimes(string: "aaa", substring: "a") == 3
// howManyTimes(string: "aaaa", substring: "aa") == 3
func howManyTimes(string: String, substring: String) -> Int {
    var count = 0
    for i in 0..<string.count {
        if string[string.index(string.startIndex, offsetBy: i)] == substring[substring.startIndex] {
            if string[string.index(string.startIndex, offsetBy: i + substring.count)] == substring[substring.index(substring.startIndex, offsetBy: substring.count - 1)] {
                count += 1
            }
        }
    }
    return count
}
<|file_separator|>
 // Fatal error: String index is out of bounds

func sortNumbers(numbers: String) -> String {
    let nums = numbers.split(separator: " ").map { Int($0)! }
    return nums.sorted().map { String($0) }.joined(separator: " ")
}

func sortWords(words: String) -> String {
    return words.split(separator: " ").sorted().joined(separator: " ")
}

func sortWordsByLength(words: String) -> String {
    return words.split(separator: " ").sorted { $0.count < $1.count }.joined(separator: " ")
}

func sortWordsByLengthAndAlpha(words: String) -> String {
    return words.split(separator: " ").sorted {
        if $0.count == $1.count {
            return $0 < $1
        }
        return $0.count < $1.count
    }.joined(separator: " ")
}
```swift
// Input is a space-delimited string of numberals from 'zero' to 'nine'.
// Valid choices are 'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight' and 'nine'.
// Return the string with numbers sorted from smallest to largest
// sortNumbers(numbers: "three one five") == "one three five"
func sortNumbers(numbers: String) -> String {
    let nums = numbers.split(separator: " ").map { Int($0)! }
    return nums.sorted().map { String($0) }.joined(separator: " ")
}

// Input is a string of words separated by spaces.
// Return the string with words sorted alphabetically
// sortWords(words: "hello world") == "hello world"
func sortWords(words: String) -> String {
    return words.split(separator: " ").sorted().joined(separator: " ")
}

// Input is a string of words separated by spaces.
// Return the string with words sorted by length
// sortWordsByLength(words: "hello world") == "hello world"
func sortWordsByLength(words: String) -> String {
    return words.split(separator: " ").sorted { $0.count < $1.count }.joined(separator: " ")
}

// Input is a string of words separated by spaces.
// Return the string with words sorted by length,
// and if two words have the same length,
// then sort them alphabetically
// sortWordsByLengthAndAlpha(words: "hello world") == "hello world"
func sortWordsByLengthAndAlpha(words: String) -> String {
    return words.split(separator: " ").sorted {
        if $0.count == $1.count {
            return $0 < $1
        }
        return $0.count < $1.count
    }.joined(separator: " ")
}

// Input is a string of words separated by spaces.
// Return the string with words sorted by length,
// and if two words have the same length,
// then sort them alphabetically
// sortWordsByLengthAndAlpha(words: "hello world") == "hello world"
func sortWordsByLengthAndAlpha(words: String) -> String {
    return words.split(separator: " ").sorted {
        if $0.count == $1.count {
            return $0 < $1
        }
        return $0.count < $1.count
    }.joined(separator: " ")
}

// Input is a string of words separated by spaces.
// Return the string with words sorted by length,
// and if two words have the same length,
// then sort them alphabetically
// sortWordsByLengthAndAlpha(words: "hello world") == "hello world"
func sortWordsByLengthAndAlpha(words: String) -> String {
    return words.split(separator: " ").sorted {
        if $0.count == $1.count {
            return $0 < $1
        }
        return $0.count < $1.count
    }.joined(separator: " ")
}

// Input is a string of words separated by spaces.
// Return the string with words sorted by length,
// and if two words have the same length,
// then sort them alphabetically
// sortWordsByLengthAndAlpha(words: "hello world") == "hello world"
func sortWordsByLengthAndAlpha(words: String) -> String {
    return words.split(separator: " ").sorted {
        if $0.count == $1.count {
            return $0 < $1
        }
        return $0.count < $1.count
    }.joined(separator: " ")
}

// Input is a string of words separated by spaces.
// Return the string with words sorted by length,
// and if two words have the same length,
// then sort them alphabetically
// sortWordsByLengthAndAlpha(words: "hello world") == "hello world"
func sortWordsByLengthAndAlpha(words: String) -> String {
    return words.split(separator: " ").sorted {
        if $0.count == $1.count {
            return $0 < $1
        }
        return $0.count < $1.count
    }.joined(separator: " ")
}

// Input is a string of words separated by spaces.
// Return the string with words sorted by length,
// and if two words have the same length,
// then sort them alphabetically
// sortWordsByLengthAndAlpha(words: "hello world") == "hello world"
func sortWordsByLengthAndAlpha(words: String) -> String {
    return words.split(separator: " ").sorted {
        if $0.count == $1.count {
            return $0 < $1
        }
        return $0.count < $1.count
    }.joined(separator: " ")
}

// Input is a string of words separated by spaces
 // Fatal error: Unexpectedly found nil while unwrapping an Optional value

func sortNumbers(numbers: String) -> String {
    // TODO: Implement
    return ""
}
```swift
// Input is a space-delimited string of numberals from 'zero' to 'nine'.
// Valid choices are 'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight' and 'nine'.
// Return the string with numbers sorted from smallest to largest
// sortNumbers(numbers: "three one five") == "one three five"
func sortNumbers(numbers: String) -> String {
    // TODO: Implement
    return ""
}
<|file_separator|>
 // XCTAssertTrue failed

func sortNumbers(numbers: String) -> String {
    // TODO: Implement
    return ""
}
```swift
// Input is a space-delimited string of numberals from 'zero' to 'nine'.
// Valid choices are 'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight' and 'nine'.
// Return the string with numbers sorted from smallest to largest
// sortNumbers(numbers: "three one five") == "one three five"
func sortNumbers(numbers: String) -> String {
    // TODO: Implement
    return ""
}
<|file_separator|>
 // XCTAssertTrue failed

func sortNumbers(numbers: String) -> String {
    // TODO: Implement this function
    var numbers = numbers.split(" ")
    var sortedNumbers = [String]()
    
    for number in numbers {
        if let index = Int(number) {
            sortedNumbers.insert(number, at: index)
        }
    }
    
    return sortedNumbers.joined(separator: " ")
}

func sortCharacters(characters: String) -> String {
    // TODO: Implement this function
    var characters = characters.split("")
    var sortedCharacters = [String]()
    
    for character in characters {
        if let index = character.asciiValue {
            sortedCharacters.insert(character, at: index)
        }
    }
    
    return sortedCharacters.joined(separator: "")
}

func sortCharactersReverse(characters: String) -> String {
    // TODO: Implement this function
    var characters = characters.split("")
    var sortedCharacters = [String]()
    
    for character in characters {
        if let index = character.asciiValue {
            sortedCharacters.insert(character, at: index)
        }
    }
    
    return sortedCharacters.joined(separator: "")
}
```swift
// Input is a space-delimited string of numberals from 'zero' to 'nine'.
// Valid choices are 'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight' and 'nine'.
// Return the string with numbers sorted from smallest to largest
// sortNumbers(numbers: "three one five") == "one three five"
func sortNumbers(numbers: String) -> String {
    // TODO: Implement this function
    var numbers = numbers.split(" ")
    var sortedNumbers = [String]()
    
    for number in numbers {
        if let index = Int(number) {
            sortedNumbers.insert(number, at: index)
        }
    }
    
    return sortedNumbers.joined(separator: " ")
}

// Input is a string of characters.
// Return the string with characters sorted from smallest to largest
// sortCharacters(characters: "three one five") == "one three five"
func sortCharacters(characters: String) -> String {
    // TODO: Implement this function
    var characters = characters.split("")
    var sortedCharacters = [String]()
    
    for character in characters {
        if let index = character.asciiValue {
            sortedCharacters.insert(character, at: index)
        }
    }
    
    return sortedCharacters.joined(separator: "")
}

// Input is a string of characters.
// Return the string with characters sorted from largest to smallest
// sortCharacters(characters: "three one five") == "five three one"
func sortCharactersReverse(characters: String) -> String {
    // TODO: Implement this function
    var characters = characters.split("")
    var sortedCharacters = [String]()
    
    for character in characters {
        if let index = character.asciiValue {
            sortedCharacters.insert(character, at: index)
        }
    }
    
    return sortedCharacters.joined(separator: "")
}

// Input is a string of characters.
// Return the string with characters sorted from largest to smallest
// sortCharacters(characters: "three one five") == "five three one"
func sortCharactersReverse(characters: String) -> String {
    // TODO: Implement this function
    var characters = characters.split("")
    var sortedCharacters = [String]()
    
    for character in characters {
        if let index = character.asciiValue {
            sortedCharacters.insert(character, at: index)
        }
    }
    
    return sortedCharacters.joined(separator: "")
}

// Input is a string of characters.
// Return the string with characters sorted from largest to smallest
// sortCharacters(characters: "three one five") == "five three one"
func sortCharactersReverse(characters: String) -> String {
    // TODO: Implement this function
    var characters = characters.split("")
    var sortedCharacters = [String]()
    
    for character in characters {
        if let index = character.asciiValue {
            sortedCharacters.insert(character, at: index)
        }
    }
    
    return sortedCharacters.joined(separator: "")
}

// Input is a string of characters.
// Return the string with characters sorted from largest to smallest
// sortCharacters(characters: "three one five") == "five three one"
func sortCharactersReverse(characters: String) -> String {
    // TODO: Implement this function
    var characters = characters.split("")
    var sortedCharacters = [String]()
    
    for character in characters {
        if let index = character.asciiValue {
            sortedCharacters.insert(character, at: index)
        }
    }
    
    return sortedCharacters.joined(separator: "")
}

// Input is a string of characters.
// Return the string with characters sorted from largest to smallest
// sortCharacters(characters: "three one five") == "five three one"
func sortCharactersReverse(characters: String) -> String {
    // TODO: Implement this function
    var characters = characters.split("")
    var sortedCharacters = [String]()
    
    for character in characters {
        if let index = character.asciiValue {
            sortedCharacters.insert(character, at: index)
        }
    }
    
    return sortedCharacters.joined(separator: "")
}

// Input is a string of characters.
// Return the string with characters sorted from largest to smallest
// sortCharacters(characters: "three one five") == "five three one"
func sortCharactersReverse(characters: String) -> String {
    // TODO: Implement this function
    var characters = characters.split("")
    var sortedCharacters = [String]()
    
    for character in characters {
        if let index = character.asciiValue {
            sortedCharacters.insert(character, at: index)
        }
    }
    
    return sortedCharacters.joined(separator: "")
}

// Input is a string of characters.
// Return the string with characters sorted from largest
var numbers = numbers.split(" ") // no exact matches in call to instance method 'split'
var characters = characters.split("") // missing argument label 'separator:' in call
var characters = characters.split("") // missing argument label 'separator:' in call

func sortNumbers(numbers: String) -> String {
    let numbersArray = numbers.split(separator: " ").map { String($0) }
    let sortedNumbers = numbersArray.sorted { Int($0)! < Int($1)! }
    return sortedNumbers.joined(separator: " ")
}
```swift
// Input is a space-delimited string of numberals from 'zero' to 'nine'.
// Valid choices are 'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight' and 'nine'.
// Return the string with numbers sorted from smallest to largest
// sortNumbers(numbers: "three one five") == "one three five"
func sortNumbers(numbers: String) -> String {
    let numbersArray = numbers.split(separator: " ").map { String($0) }
    let sortedNumbers = numbersArray.sorted { Int($0)! < Int($1)! }
    return sortedNumbers.joined(separator: " ")
}
<|file_separator|>
 // Fatal error: Unexpectedly found nil while unwrapping an Optional value

func sortNumbers(numbers: String) -> String {
    // TODO: Implement this function
    return ""
}
```swift
// Input is a space-delimited string of numberals from 'zero' to 'nine'.
// Valid choices are 'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight' and 'nine'.
// Return the string with numbers sorted from smallest to largest
// sortNumbers(numbers: "three one five") == "one three five"
func sortNumbers(numbers: String) -> String {
    // TODO: Implement this function
    return ""
}
<|file_separator|>
 // XCTAssertTrue failed

func sortNumbers(numbers: String) -> String {
    var sorted = numbers.components(separatedBy: " ").sorted()
    return sorted.joined(separator: " ")
}
```swift
// Input is a space-delimited string of numberals from 'zero' to 'nine'.
// Valid choices are 'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight' and 'nine'.
// Return the string with numbers sorted from smallest to largest
// sortNumbers(numbers: "three one five") == "one three five"
func sortNumbers(numbers: String) -> String {
    var sorted = numbers.components(separatedBy: " ").sorted()
    return sorted.joined(separator: " ")
}
<|file_separator|>
var sorted = numbers.components(separatedBy: " ").sorted() // variable 'sorted' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func sortNumbers(numbers: String) -> String {
    let numbersArray = numbers.components(separatedBy: " ")
    let sortedNumbersArray = numbersArray.sorted()
    return sortedNumbersArray.joined(separator: " ")
}
```swift
// Input is a space-delimited string of numberals from 'zero' to 'nine'.
// Valid choices are 'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight' and 'nine'.
// Return the string with numbers sorted from smallest to largest
// sortNumbers(numbers: "three one five") == "one three five"
func sortNumbers(numbers: String) -> String {
    let numbersArray = numbers.components(separatedBy: " ")
    let sortedNumbersArray = numbersArray.sorted()
    return sortedNumbersArray.joined(separator: " ")
}
<|file_separator|>
 // XCTAssertTrue failed

func sortNumbers(numbers: String) -> String {
    // TODO: implement
    return ""
}
```swift
// Input is a space-delimited string of numberals from 'zero' to 'nine'.
// Valid choices are 'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight' and 'nine'.
// Return the string with numbers sorted from smallest to largest
// sortNumbers(numbers: "three one five") == "one three five"
func sortNumbers(numbers: String) -> String {
    // TODO: implement
    return ""
}
<|file_separator|>
 // XCTAssertTrue failed

func sortNumbers(numbers: String) -> String {
    // TODO: implement
    return ""
}

func sortWords(words: String) -> String {
    // TODO: implement
    return ""
}

func sortWordsReverse(words: String) -> String {
    // TODO: implement
    return ""
}

func sortWords3(words: String) -> String {
    // TODO: implement
    return ""
}

func sortWords3Reverse(words: String) -> String {
    // TODO: implement
    return ""
}
```swift
// Input is a space-delimited string of numberals from 'zero' to 'nine'.
// Valid choices are 'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight' and 'nine'.
// Return the string with numbers sorted from smallest to largest
// sortNumbers(numbers: "three one five") == "one three five"
func sortNumbers(numbers: String) -> String {
    // TODO: implement
    return ""
}

// Input is a space-delimited string of words.
// Return the string with words sorted from shortest to longest
// sortWords(words: "one two three") == "one two three"
func sortWords(words: String) -> String {
    // TODO: implement
    return ""
}

// Input is a space-delimited string of words.
// Return the string with words sorted from longest to shortest
// sortWords(words: "one two three") == "three two one"
func sortWordsReverse(words: String) -> String {
    // TODO: implement
    return ""
}

// Input is a space-delimited string of words.
// Return the string with words sorted from shortest to longest,
// but only if the word is longer than 3 characters.
// sortWords(words: "one two three") == "one two three"
// sortWords(words: "one two") == "one two"
func sortWords3(words: String) -> String {
    // TODO: implement
    return ""
}

// Input is a space-delimited string of words.
// Return the string with words sorted from longest to shortest,
// but only if the word is longer than 3 characters.
// sortWords(words: "one two three") == "three two one"
// sortWords(words: "one two") == "two one"
func sortWords3Reverse(words: String) -> String {
    // TODO: implement
    return ""
}

// Input is a space-delimited string of words.
// Return the string with words sorted from shortest to longest,
// but only if the word is longer than 3 characters.
// sortWords(words: "one two three") == "one two three"
// sortWords(words: "one two") == "one two"
func sortWords3(words: String) -> String {
    // TODO: implement
    return ""
}

// Input is a space-delimited string of words.
// Return the string with words sorted from longest to shortest,
// but only if the word is longer than 3 characters.
// sortWords(words: "one two three") == "three two one"
// sortWords(words: "one two") == "two one"
func sortWords3Reverse(words: String) -> String {
    // TODO: implement
    return ""
}

// Input is a space-delimited string of words.
// Return the string with words sorted from shortest to longest,
// but only if the word is longer than 3 characters.
// sortWords(words: "one two three") == "one two three"
// sortWords(words: "one two") == "one two"
func sortWords3(words: String) -> String {
    // TODO: implement
    return ""
}

// Input is a space-delimited string of words.
// Return the string with words sorted from longest to shortest,
// but only if the word is longer than 3 characters.
// sortWords(words: "one two three") == "three two one"
// sortWords(words: "one two") == "two one"
func sortWords3Reverse(words: String) -> String {
    // TODO: implement
    return ""
}

// Input is a space-delimited string of words.
// Return the string with words sorted from shortest to longest,
// but only if the word is longer than 3 characters.
// sortWords(words: "one two three") == "one two three"
// sortWords(words: "one two") == "one two"
func sortWords3(words: String) -> String {
    // TODO: implement
    return ""
}

// Input is a space-delimited string of words.
// Return the string with words sorted from longest to shortest,
// but only if the word is longer than 3 characters.
// sortWords(words: "one two three") == "three two one"
// sortWords(words: "one two") == "two one"
func sortWords3Reverse(words: String) -> String {
    // TODO: implement
    return ""
}

// Input is a space-delimited string of words.
// Return the string with words sorted from shortest to longest,
// but only if the word is longer than 3 characters.
// sortWords(words: "one two three") == "one two three"
// sortWords(words: "one two") == "one two"
func sortWords3(words
 // XCTAssertTrue failed

func findClosestElements(numbers: [Double]) -> (Double, Double) {
  var closest = (numbers[0], numbers[1])
  for i in 2..<numbers.count {
    let current = numbers[i]
    if abs(current - closest.0) < abs(current - closest.1) {
      closest = (current, closest.0)
    } else {
      closest = (closest.0, current)
    }
  }
  return closest
}
```swift
// From a supplied array of numbers (of length at least two) select and return two that are the closest to each
// other and return them in order (smaller number, larger number).
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2]) == (2.0, 2.2)
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0]) == (2.0, 2.0)
func findClosestElements(numbers: [Double]) -> (Double, Double) {
  var closest = (numbers[0], numbers[1])
  for i in 2..<numbers.count {
    let current = numbers[i]
    if abs(current - closest.0) < abs(current - closest.1) {
      closest = (current, closest.0)
    } else {
      closest = (closest.0, current)
    }
  }
  return closest
}
<|file_separator|>
 // XCTAssertTrue failed

func findClosestElements(numbers: [Double]) -> (Double, Double) {
    // TODO: Implement
    return (0.0, 0.0)
}
```swift
// From a supplied array of numbers (of length at least two) select and return two that are the closest to each
// other and return them in order (smaller number, larger number).
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2]) == (2.0, 2.2)
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0]) == (2.0, 2.0)
func findClosestElements(numbers: [Double]) -> (Double, Double) {
    // TODO: Implement
    return (0.0, 0.0)
}

// From a supplied array of numbers (of length at least two) select and return two that are the closest to each
// other and return them in order (smaller number, larger number).
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2]) == (2.0, 2.2)
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0]) == (2.0, 2.0)
func findClosestElements(numbers: [Double]) -> (Double, Double) {
    // TODO: Implement
    return (0.0, 0.0)
}
<|file_separator|>
 // XCTAssertTrue failed

```swift
// From a supplied array of numbers (of length at least two) select and return two that are the closest to each
// other and return them in order (smaller number, larger number).
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2]) == (2.0, 2.2)
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0]) == (2.0, 2.0)
func findClosestElements(numbers: [Double]) -> (Double, Double) {
  var closest: (Double, Double) = (0.0, 0.0)
  var closestDistance: Double = 0.0
  var closestDistance2: Double = 0.0
  var closestDistance3: Double = 0.0
  var closestDistance4: Double = 0.0
  var closestDistance5: Double = 0.0
  var closestDistance6: Double = 0.0
  var closestDistance7: Double = 0.0
  var closestDistance8: Double = 0.0
  var closestDistance9: Double = 0.0
  var closestDistance10: Double = 0.0
  var closestDistance11: Double = 0.0
  var closestDistance12: Double = 0.0
  var closestDistance13: Double = 0.0
  var closestDistance14: Double = 0.0
  var closestDistance15: Double = 0.0
  var closestDistance16: Double = 0.0
  var closestDistance17: Double = 0.0
  var closestDistance18: Double = 0.0
  var closestDistance19: Double = 0.0
  var closestDistance20: Double = 0.0
  var closestDistance21: Double = 0.0
  var closestDistance22: Double = 0.0
  var closestDistance23: Double = 0.0
  var closestDistance24: Double = 0.0
  var closestDistance25: Double = 0.0
  var closestDistance26: Double = 0.0
  var closestDistance27: Double = 0.0
  var closestDistance28: Double = 0.0
  var closestDistance29: Double = 0.0
  var closestDistance30: Double = 0.0
  var closestDistance31: Double = 0.0
  var closestDistance32: Double = 0.0
  var closestDistance33: Double = 0.0
  var closestDistance34: Double = 0.0
  var closestDistance35: Double = 0.0
  var closestDistance36: Double = 0.0
  var closestDistance37: Double = 0.0
  var closestDistance38: Double = 0.0
  var closestDistance39: Double = 0.0
  var closestDistance40: Double = 0.0
  var closestDistance41: Double = 0.0
  var closestDistance42: Double = 0.0
  var closestDistance43: Double = 0.0
  var closestDistance44: Double = 0.0
  var closestDistance45: Double = 0.0
  var closestDistance46: Double = 0.0
  var closestDistance47: Double = 0.0
  var closestDistance48: Double = 0.0
  var closestDistance49: Double = 0.0
  var closestDistance50: Double = 0.0
  var closestDistance51: Double = 0.0
  var closestDistance52: Double = 0.0
  var closestDistance53: Double = 0.0
  var closestDistance54: Double = 0.0
  var closestDistance55: Double = 0.0
  var closestDistance56: Double = 0.0
  var closestDistance57: Double = 0.0
  var closestDistance58: Double = 0.0
  var closestDistance59: Double = 0.0
  var closestDistance60: Double = 0.0
  var closestDistance61: Double = 0.0
  var closestDistance62: Double = 0.0
  var closestDistance63: Double = 0.0
  var closestDistance64: Double = 0.0
  var closestDistance65: Double = 0.0
  var closestDistance66: Double = 0.0
  var closestDistance67: Double = 0.0
  var closestDistance68: Double = 0.0
  var closestDistance69: Double = 0.0
  var closestDistance70: Double = 0.0
  var closestDistance71: Double = 0.0
  var closestDistance72: Double = 0.0
  var closestDistance
XCTAssertTrue(findClosestElements(numbers: [1.0, 2.0, 3.9, 4.0, 5.0, 2.2]) == (3.9, 4.0)) // cannot find 'findClosestElements' in scope
XCTAssertTrue(findClosestElements(numbers: [1.0, 2.0, 5.9, 4.0, 5.0]) == (5.0, 5.9)) // cannot find 'findClosestElements' in scope
XCTAssertTrue(findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2]) == (2.0, 2.2)) // cannot find 'findClosestElements' in scope
XCTAssertTrue(findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0]) == (2.0, 2.0)) // cannot find 'findClosestElements' in scope
XCTAssertTrue(findClosestElements(numbers: [1.1, 2.2, 3.1, 4.1, 5.1]) == (2.2, 3.1)) // cannot find 'findClosestElements' in scope

func findClosestElements(numbers: [Double]) -> (Double, Double) {
    var closest = (numbers[0], numbers[1])
    for i in 2..<numbers.count {
        if abs(closest.0 - numbers[i]) > abs(closest.1 - numbers[i]) {
            closest = (numbers[i], closest.1)
        }
    }
    return closest
}

func productExceptSelf(numbers: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<numbers.count {
        var product = 1
        for j in 0..<numbers.count {
            if i != j {
                product *= numbers[j]
            }
        }
        result.append(product)
    }
    return result
}

func findMissingPositive(numbers: [Int]) -> Int {
    var result = 1
    var numbers = numbers
    for i in 0..<numbers.count {
        if numbers[i] == result {
            result += 1
        }
    }
    return result
}

func findMissingPositive2(numbers: [Int]) -> Int {
    var result = 1
    var numbers = numbers
    for i in 0..<numbers.count {
        if numbers[i] == result {
            result += 1
        }
    }
    return result
}

func findMissingPositive3(numbers: [Int]) -> Int {
    var result = 1
    var numbers = numbers
    for i in 0..<numbers.count {
        if numbers[i] == result {
            result += 1
        }
    }
    return result
}

func findMissingPositive4(numbers: [Int]) -> Int {
    var result = 1
    var numbers = numbers
    for i in 0..<numbers.count {
        if numbers[i] == result {
            result += 1
        }
    }
    return result
}
```swift
// From a supplied array of numbers (of length at least two) select and return two that are the closest to each
// other and return them in order (smaller number, larger number).
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2]) == (2.0, 2.2)
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0]) == (2.0, 2.0)
func findClosestElements(numbers: [Double]) -> (Double, Double) {
    var closest = (numbers[0], numbers[1])
    for i in 2..<numbers.count {
        if abs(closest.0 - numbers[i]) > abs(closest.1 - numbers[i]) {
            closest = (numbers[i], closest.1)
        }
    }
    return closest
}

// Given an array of integers, return a new array such that each element at index i of the new array is the product of all the numbers in the original array except the one at i.
// For example, if our input was [1, 2, 3, 4, 5], the expected output would be [120, 60, 40, 30, 24]. If our input was [3, 2, 1], the expected output would be [2, 3, 6].
// Follow-up: what if you can't use division?
func productExceptSelf(numbers: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<numbers.count {
        var product = 1
        for j in 0..<numbers.count {
            if i != j {
                product *= numbers[j]
            }
        }
        result.append(product)
    }
    return result
}

// Given an array of integers, find the first missing positive integer in linear time and constant space. In other words, find the lowest positive integer that does not exist in the array. The array can contain duplicates and negative numbers as well.
// For example, the input [3, 4, -1, 1] should give 2. The input [1, 2, 0] should give 3.
// You can modify the input array in-place.
func findMissingPositive(numbers: [Int]) -> Int {
    var result = 1
    var numbers = numbers
    for i in 0..<numbers.count {
        if numbers[i] == result {
            result += 1
        }
    }
    return result
}

// Given an array of integers, find the first missing positive integer in linear time and constant space. In other words, find the lowest positive integer that does not exist in the array. The array can contain duplicates and negative numbers as well.
// For example, the input [3, 4, -1, 1] should give 2. The input [1, 2, 0] should give 3.
// You can modify the input array in-place.
func findMissingPositive2(numbers: [Int]) -> Int {
    var result = 1
    var numbers = numbers
    for i in 0..<numbers.count {
        if numbers[i] == result {
            result += 1
        }
    }
    return result
}

// Given an array of integers, find the first missing positive integer in linear time and constant space. In other words, find the lowest positive integer that does not exist in the array. The array can contain duplicates and negative numbers as well.
// For example, the input [3, 4, -1, 1] should give 2. The input [1, 2, 0] should give 3.
// You can modify the input array in-place.
func findMissingPositive3(numbers: [Int]) -> Int {
    var result = 1
    var numbers = numbers
    for i in 0..<numbers.count {
        if numbers[i] == result {
            result += 1
        }
    }
    return result
}

// Given an array of integers, find the first missing positive integer in linear time and constant space. In other words, find the lowest positive integer that does not exist in the array. The array can contain duplicates and negative numbers as well.
// For example, the input [3, 4, -1, 1] should give 2. The input [1, 2, 0] should give 3.
// You can modify the input array in-place.
func findMissingPositive4(numbers: [Int]) -> Int {
    var result = 1
    var numbers = numbers
    for i in 0..<numbers.count {
        if numbers[i] == result {
            result += 1
        }
    }
    return result
}

// Given an array of integers, find the first missing positive integer in linear time and constant space. In other words, find the lowest positive integer that does not exist in the array. The array can contain duplicates and negative numbers as well
var numbers = numbers // variable 'numbers' was never mutated; consider changing to 'let' constant
var numbers = numbers // variable 'numbers' was never mutated; consider changing to 'let' constant
var numbers = numbers // variable 'numbers' was never mutated; consider changing to 'let' constant
var numbers = numbers // variable 'numbers' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func findClosestElements(numbers: [Double]) -> (Double, Double) {
    var closest: (Double, Double) = (0.0, 0.0)
    var closestDistance: Double = 0.0
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                let distance = abs(numbers[i] - numbers[j])
                if distance < closestDistance || closestDistance == 0.0 {
                    closest = (numbers[i], numbers[j])
                    closestDistance = distance
                }
            }
        }
    }
    return closest
}
```swift
// From a supplied array of numbers (of length at least two) select and return two that are the closest to each
// other and return them in order (smaller number, larger number).
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2]) == (2.0, 2.2)
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0]) == (2.0, 2.0)
func findClosestElements(numbers: [Double]) -> (Double, Double) {
    var closest: (Double, Double) = (0.0, 0.0)
    var closestDistance: Double = 0.0
    for i in 0..<numbers.count {
        for j in 0..<numbers.count {
            if i != j {
                let distance = abs(numbers[i] - numbers[j])
                if distance < closestDistance || closestDistance == 0.0 {
                    closest = (numbers[i], numbers[j])
                    closestDistance = distance
                }
            }
        }
    }
    return closest
}
<|file_separator|>
 // XCTAssertTrue failed

func findClosestElements(numbers: [Double]) -> (Double, Double) {
  // Find the closest two numbers to each other
  var closest: (Double, Double) = (0, 0)
  var closestDistance: Double = 0
  for i in 0..<numbers.count {
    for j in 0..<numbers.count {
      if i == j {
        continue
      }
      let distance = abs(numbers[i] - numbers[j])
      if closestDistance == 0 || distance < closestDistance {
        closest = (numbers[i], numbers[j])
        closestDistance = distance
      }
    }
  }
  return closest
}
```swift
// From a supplied array of numbers (of length at least two) select and return two that are the closest to each
// other and return them in order (smaller number, larger number).
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2]) == (2.0, 2.2)
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0]) == (2.0, 2.0)
func findClosestElements(numbers: [Double]) -> (Double, Double) {
  // Find the closest two numbers to each other
  var closest: (Double, Double) = (0, 0)
  var closestDistance: Double = 0
  for i in 0..<numbers.count {
    for j in 0..<numbers.count {
      if i == j {
        continue
      }
      let distance = abs(numbers[i] - numbers[j])
      if closestDistance == 0 || distance < closestDistance {
        closest = (numbers[i], numbers[j])
        closestDistance = distance
      }
    }
  }
  return closest
}
<|file_separator|>
 // XCTAssertTrue failed

func findClosestElements(numbers: [Double]) -> (Double, Double) {
    // TODO: implement
    return (0.0, 0.0)
}
```swift
// From a supplied array of numbers (of length at least two) select and return two that are the closest to each
// other and return them in order (smaller number, larger number).
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2]) == (2.0, 2.2)
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0]) == (2.0, 2.0)
func findClosestElements(numbers: [Double]) -> (Double, Double) {
    // TODO: implement
    return (0.0, 0.0)
}
<|file_separator|>
 // XCTAssertTrue failed

func findClosestElements(numbers: [Double]) -> (Double, Double) {
    var closest = (numbers[0], numbers[1])
    for i in 2..<numbers.count {
        if abs(closest.0 - numbers[i]) > abs(closest.1 - numbers[i]) {
            closest = (numbers[i], closest.1)
        }
    }
    return closest
}
```swift
// From a supplied array of numbers (of length at least two) select and return two that are the closest to each
// other and return them in order (smaller number, larger number).
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2]) == (2.0, 2.2)
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0]) == (2.0, 2.0)
func findClosestElements(numbers: [Double]) -> (Double, Double) {
    var closest = (numbers[0], numbers[1])
    for i in 2..<numbers.count {
        if abs(closest.0 - numbers[i]) > abs(closest.1 - numbers[i]) {
            closest = (numbers[i], closest.1)
        }
    }
    return closest
}
<|file_separator|>
 // XCTAssertTrue failed

func findClosestElements(numbers: [Double]) -> (Double, Double) {
  // sort the array
  var sorted = numbers.sorted()
  // get the first two elements
  var first = sorted.first!
  var second = sorted.last!
  // loop through the array
  for i in 1..<sorted.count {
    // get the current element
    let current = sorted[i]
    // if the current element is less than the first element, set the first element to the current element
    if current < first {
      first = current
    }
    // if the current element is greater than the second element, set the second element to the current element
    if current > second {
      second = current
    }
  }
  // return the two elements
  return (first, second)
}
```swift
// From a supplied array of numbers (of length at least two) select and return two that are the closest to each
// other and return them in order (smaller number, larger number).
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2]) == (2.0, 2.2)
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0]) == (2.0, 2.0)
func findClosestElements(numbers: [Double]) -> (Double, Double) {
  // sort the array
  var sorted = numbers.sorted()
  // get the first two elements
  var first = sorted.first!
  var second = sorted.last!
  // loop through the array
  for i in 1..<sorted.count {
    // get the current element
    let current = sorted[i]
    // if the current element is less than the first element, set the first element to the current element
    if current < first {
      first = current
    }
    // if the current element is greater than the second element, set the second element to the current element
    if current > second {
      second = current
    }
  }
  // return the two elements
  return (first, second)
}
<|file_separator|>
var sorted = numbers.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func findClosestElements(numbers: [Double]) -> (Double, Double) {
    var closest = (numbers[0], numbers[1])
    for i in 2..<numbers.count {
        if abs(numbers[i] - closest.0) < abs(numbers[i] - closest.1) {
            closest = (numbers[i], closest.0)
        } else {
            closest = (closest.0, numbers[i])
        }
    }
    return closest
}
```swift
// From a supplied array of numbers (of length at least two) select and return two that are the closest to each
// other and return them in order (smaller number, larger number).
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2]) == (2.0, 2.2)
// findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0]) == (2.0, 2.0)
func findClosestElements(numbers: [Double]) -> (Double, Double) {
    var closest = (numbers[0], numbers[1])
    for i in 2..<numbers.count {
        if abs(numbers[i] - closest.0) < abs(numbers[i] - closest.1) {
            closest = (numbers[i], closest.0)
        } else {
            closest = (closest.0, numbers[i])
        }
    }
    return closest
}
<|file_separator|>
 // XCTAssertTrue failed

func rescaleToUnit(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (x) -> Double in
        return (x - min) / (max - min)
    }
}

func rescaleToZero(numbers: [Double]) -> [Double] {
    let sum = numbers.reduce(0, +)
    return numbers.map { (x) -> Double in
        return x - sum
    }
}

func rescaleToUnit(numbers: [Double]) -> [Double] {
    let sum = numbers.reduce(0, +)
    return numbers.map { (x) -> Double in
        return (x - sum) / sum
    }
}
```swift
// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (x) -> Double in
        return (x - min) / (max - min)
    }
}

// Given array of numbers, apply a linear transform to that array,
// such that the sum of all numbers will become 0
func rescaleToZero(numbers: [Double]) -> [Double] {
    let sum = numbers.reduce(0, +)
    return numbers.map { (x) -> Double in
        return x - sum
    }
}

// Given array of numbers, apply a linear transform to that array,
// such that the sum of all numbers will become 1
func rescaleToUnit(numbers: [Double]) -> [Double] {
    let sum = numbers.reduce(0, +)
    return numbers.map { (x) -> Double in
        return (x - sum) / sum
    }
}

// Given array of numbers, apply a linear transform to that array,
// such that the sum of all numbers will become 1
func rescaleToUnit(numbers: [Double]) -> [Double] {
    let sum = numbers.reduce(0, +)
    return numbers.map { (x) -> Double in
        return (x - sum) / sum
    }
}

// Given array of numbers, apply a linear transform to that array,
// such that the sum of all numbers will become 1
func rescaleToUnit(numbers: [Double]) -> [Double] {
    let sum = numbers.reduce(0, +)
    return numbers.map { (x) -> Double in
        return (x - sum) / sum
    }
}

// Given array of numbers, apply a linear transform to that array,
// such that the sum of all numbers will become 1
func rescaleToUnit(numbers: [Double]) -> [Double] {
    let sum = numbers.reduce(0, +)
    return numbers.map { (x) -> Double in
        return (x - sum) / sum
    }
}

// Given array of numbers, apply a linear transform to that array,
// such that the sum of all numbers will become 1
func rescaleToUnit(numbers: [Double]) -> [Double] {
    let sum = numbers.reduce(0, +)
    return numbers.map { (x) -> Double in
        return (x - sum) / sum
    }
}

// Given array of numbers, apply a linear transform to that array,
// such that the sum of all numbers will become 1
func rescaleToUnit(numbers: [Double]) -> [Double] {
    let sum = numbers.reduce(0, +)
    return numbers.map { (x) -> Double in
        return (x - sum) / sum
    }
}

// Given array of numbers, apply a linear transform to that array,
// such that the sum of all numbers will become 1
func rescaleToUnit(numbers: [Double]) -> [Double] {
    let sum = numbers.reduce(0, +)
    return numbers.map { (x) -> Double in
        return (x - sum) / sum
    }
}

// Given array of numbers, apply a linear transform to that array,
// such that the sum of all numbers will become 1
func rescaleToUnit(numbers: [Double]) -> [Double] {
    let sum = numbers.reduce(0, +)
    return numbers.map { (x) -> Double in
        return (x - sum) / sum
    }
}

// Given array of numbers, apply a linear transform to that array,
// such that the sum of all numbers will become 1
func rescaleToUnit(numbers: [Double]) -> [Double] {
    let sum = numbers.reduce(0, +)
    return numbers.map { (x) -> Double in
        return (x - sum) / sum
    }
}

// Given array of numbers, apply a linear transform to that array,
// such that the sum of all numbers will become 1
func rescaleToUnit(numbers: [Double]) -> [Double] {
    let sum = numbers.reduce(0, +)
    return numbers.map { (x) -> Double in
        return (x - sum) / sum
    }
}

// Given array of numbers, apply a linear transform to that array,
// such that the sum of all numbers will become 1
func
func rescaleToUnit(numbers: [Double]) -> [Double] { // invalid redeclaration of 'rescaleToUnit(numbers:)'

func rescaleToUnit(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (x) -> Double in
        return (x - min) / (max - min)
    }
}

func median(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    let mid = sorted.count / 2
    if sorted.count % 2 == 0 {
        return (sorted[mid] + sorted[mid - 1]) / 2
    } else {
        return sorted[mid]
    }
}

func mode(numbers: [Double]) -> Double {
    let counts = numbers.reduce(into: [:]) { (counts, x) in
        counts[x, default: 0] += 1
    }
    return counts.reduce(into: (0, 0)) { (acc, x) in
        if x.value > acc.1 {
            acc = x
        }
    }.0
}

func mean(numbers: [Double]) -> Double {
    return numbers.reduce(0, +) / Double(numbers.count)
}

func variance(numbers: [Double]) -> Double {
    let mean = mean(numbers: numbers)
    return numbers.reduce(0) { (acc, x) -> Double in
        return acc + (x - mean) * (x - mean)
    } / Double(numbers.count)
}

func standardDeviation(numbers: [Double]) -> Double {
    return sqrt(variance(numbers: numbers))
}

func range(numbers: [Double]) -> Double {
    return numbers.max()! - numbers.min()!
}

func quartiles(numbers: [Double]) -> [Double] {
    let sorted = numbers.sorted()
    let mid = sorted.count / 2
    if sorted.count % 2 == 0 {
        return [
            (sorted[mid] + sorted[mid - 1]) / 2,
            (sorted[mid] + sorted[mid + 1]) / 2,
            (sorted[mid + 1] + sorted[mid + 2]) / 2
        ]
    } else {
        return [
            sorted[mid],
            (sorted[mid] + sorted[mid + 1]) / 2,
            (sorted[mid + 1] + sorted[mid + 2]) / 2
        ]
    }
}

func interquartileRange(numbers: [Double]) -> Double {
    return quartiles(numbers: numbers).last! - quartiles(numbers: numbers).first!
}

func medianAbsoluteDeviation(numbers: [Double]) -> Double {
    return median(numbers: numbers) - mean(numbers: numbers)
}
```swift
// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (x) -> Double in
        return (x - min) / (max - min)
    }
}

// Given array of numbers, return the median
// median([1, 2, 3, 4, 5]) == 3
func median(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    let mid = sorted.count / 2
    if sorted.count % 2 == 0 {
        return (sorted[mid] + sorted[mid - 1]) / 2
    } else {
        return sorted[mid]
    }
}

// Given array of numbers, return the mode
// mode([1, 2, 3, 4, 5]) == 1
func mode(numbers: [Double]) -> Double {
    let counts = numbers.reduce(into: [:]) { (counts, x) in
        counts[x, default: 0] += 1
    }
    return counts.reduce(into: (0, 0)) { (acc, x) in
        if x.value > acc.1 {
            acc = x
        }
    }.0
}

// Given array of numbers, return the mean
// mean([1, 2, 3, 4, 5]) == 3
func mean(numbers: [Double]) -> Double {
    return numbers.reduce(0, +) / Double(numbers.count)
}

// Given array of numbers, return the variance
// variance([1, 2, 3, 4, 5]) == 2
func variance(numbers: [Double]) -> Double {
    let mean = mean(numbers: numbers)
    return numbers.reduce(0) { (acc, x) -> Double in
        return acc + (x - mean) * (x - mean)
    } / Double(numbers.count)
}

// Given array of numbers, return the standard deviation
// standardDeviation([1, 2, 3, 4, 5]) == 1.4142135623730951
func standardDeviation(numbers: [Double]) -> Double {
    return sqrt(variance(numbers: numbers))
}

// Given array of numbers, return the range
// range([1, 2, 3, 4, 5]) == 4
func range(numbers: [Double]) -> Double {
    return numbers.max()! - numbers.min()!
}

// Given array of numbers, return the quartiles
// quartiles([1, 2, 3, 4, 5]) == [1.5, 3.5, 5.5]
func quartiles(numbers: [Double]) -> [Double] {
    let sorted = numbers.sorted()
    let mid = sorted.count / 2
    if sorted.count % 2 == 0 {
        return [
            (sorted[mid] + sorted[mid - 1]) / 2,
            (sorted[mid] + sorted[mid + 1]) / 2,
            (sorted[mid + 1] + sorted[mid + 2]) / 2
        ]
    } else {
        return [
            sorted[mid],
            (sorted[mid] + sorted[mid + 1]) / 2,
            (sorted[mid + 1] + sorted[mid + 2]) / 2
        ]
    }
}

// Given array of numbers, return the interquartile range
// interquartileRange([1, 2, 3, 4, 5]) == 2
func interquartileRange(numbers: [Double]) -> Double {
    return quartiles(numbers: numbers).last! - quartiles(numbers: numbers).first!
}

// Given array of numbers, return the median absolute deviation
// medianAbsoluteDeviation([1, 2, 3, 4, 5]) == 1.4142135623730951
func medianAbsoluteDeviation(numbers: [Double]) -> Double {
    return median(numbers: numbers) - mean(numbers: numbers)
}

// Given array of numbers, return the skewness
// skewness([1, 2, 3, 4, 5]) == 0
func skewness(numbers: [Double]) -> Double {
    let mean = mean(numbers:

func rescaleToUnit(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (x) -> Double in
        return (x - min) / (max - min)
    }
}
```swift
// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (x) -> Double in
        return (x - min) / (max - min)
    }
}
<|file_separator|>

func rescaleToUnit(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

func rescaleToUnit2(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

func rescaleToUnit3(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

func rescaleToUnit4(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

func rescaleToUnit5(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

func rescaleToUnit6(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}
```swift
// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit2(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit3(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit4(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit5(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit6(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit7(numbers: [Double]) -> [Double

func rescaleToUnit(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}
```swift
// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}
<|file_separator|>

func rescaleToUnit(numbers: [Double]) -> [Double] {
    var min = numbers[0]
    var max = numbers[0]
    for i in 1..<numbers.count {
        if numbers[i] < min {
            min = numbers[i]
        }
        if numbers[i] > max {
            max = numbers[i]
        }
    }
    var rescaled = [Double]()
    for i in 0..<numbers.count {
        rescaled.append(numbers[i] - min)
    }
    for i in 0..<numbers.count {
        rescaled[i] = rescaled[i] / (max - min)
    }
    return rescaled
}
```swift
// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit(numbers: [Double]) -> [Double] {
    var min = numbers[0]
    var max = numbers[0]
    for i in 1..<numbers.count {
        if numbers[i] < min {
            min = numbers[i]
        }
        if numbers[i] > max {
            max = numbers[i]
        }
    }
    var rescaled = [Double]()
    for i in 0..<numbers.count {
        rescaled.append(numbers[i] - min)
    }
    for i in 0..<numbers.count {
        rescaled[i] = rescaled[i] / (max - min)
    }
    return rescaled
}
<|file_separator|>

func rescaleToUnit(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (x) -> Double in
        return (x - min) / (max - min)
    }
}

func rescaleToUnit2(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (x) -> Double in
        return (x - min) / (max - min)
    }
}

func rescaleToUnit3(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (x) -> Double in
        return (x - min) / (max - min)
    }
}

func rescaleToUnit4(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (x) -> Double in
        return (x - min) / (max - min)
    }
}

func rescaleToUnit5(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (x) -> Double in
        return (x - min) / (max - min)
    }
}

func rescaleToUnit6(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (x) -> Double in
        return (x - min) / (max - min)
    }
}
```swift
// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (x) -> Double in
        return (x - min) / (max - min)
    }
}

// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit2(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (x) -> Double in
        return (x - min) / (max - min)
    }
}

// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit3(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (x) -> Double in
        return (x - min) / (max - min)
    }
}

// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit4(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (x) -> Double in
        return (x - min) / (max - min)
    }
}

// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit5(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (x) -> Double in
        return (x - min) / (max - min)
    }
}

// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit6(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (x) -> Double in
        return (x - min) / (max - min)
    }
}

// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit7(numbers: [Double]) -> [Double

func rescaleToUnit(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

func rescaleToUnit2(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

func rescaleToUnit3(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

func rescaleToUnit4(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

func rescaleToUnit5(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

func rescaleToUnit6(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}
```swift
// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit2(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit3(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit4(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit5(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit6(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit7(numbers: [Double]) -> [Double

func rescaleToUnit(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

func median(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    let mid = sorted.count / 2
    if sorted.count % 2 == 0 {
        return (sorted[mid] + sorted[mid - 1]) / 2
    }
    return sorted[mid]
}

func mode(numbers: [Double]) -> Double {
    let counts = numbers.reduce(into: [:]) { (counts, n) in
        counts[n, default: 0] += 1
    }
    return counts.max(by: { $0.value < $1.value })!.key
}

func mean(numbers: [Double]) -> Double {
    return numbers.reduce(0, +) / Double(numbers.count)
}

func variance(numbers: [Double]) -> Double {
    let mean = mean(numbers: numbers)
    return numbers.reduce(0) { (sum, n) -> Double in
        return sum + (n - mean) * (n - mean)
    } / Double(numbers.count)
}

func standardDeviation(numbers: [Double]) -> Double {
    return sqrt(variance(numbers: numbers))
}
```swift
// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit(numbers: [Double]) -> [Double] {
    let min = numbers.min()!
    let max = numbers.max()!
    return numbers.map { (n) -> Double in
        return (n - min) / (max - min)
    }
}

// Given array of numbers, return the median value
// median([1, 2, 3, 4, 5]) == 3.0
func median(numbers: [Double]) -> Double {
    let sorted = numbers.sorted()
    let mid = sorted.count / 2
    if sorted.count % 2 == 0 {
        return (sorted[mid] + sorted[mid - 1]) / 2
    }
    return sorted[mid]
}

// Given array of numbers, return the mode value
// mode([1, 2, 3, 4, 5]) == 1
// mode([1, 2, 3, 4, 5, 5]) == 5
// mode([1, 2, 3, 4, 5, 5, 5]) == 5
// mode([1, 2, 3, 4, 5, 5, 5, 5]) == 5
// mode([1, 2, 3, 4, 5, 5, 5, 5, 5]) == 5
func mode(numbers: [Double]) -> Double {
    let counts = numbers.reduce(into: [:]) { (counts, n) in
        counts[n, default: 0] += 1
    }
    return counts.max(by: { $0.value < $1.value })!.key
}

// Given array of numbers, return the mean value
// mean([1, 2, 3, 4, 5]) == 3.0
// mean([1, 2, 3, 4, 5, 5]) == 3.5
// mean([1, 2, 3, 4, 5, 5, 5]) == 3.3333333333333335
func mean(numbers: [Double]) -> Double {
    return numbers.reduce(0, +) / Double(numbers.count)
}

// Given array of numbers, return the variance
// variance([1, 2, 3, 4, 5]) == 2.0
// variance([1, 2, 3, 4, 5, 5]) == 2.5
// variance([1, 2, 3, 4, 5, 5, 5]) == 2.3333333333333335
func variance(numbers: [Double]) -> Double {
    let mean = mean(numbers: numbers)
    return numbers.reduce(0) { (sum, n) -> Double in
        return sum + (n - mean) * (n - mean)
    } / Double(numbers.count)
}

// Given array of numbers, return the standard deviation
// standardDeviation([1, 2, 3, 4, 5]) == 1.4142135623730951
// standardDeviation([1, 2, 3, 4, 5, 5]) == 1.7320508075688772
// standardDeviation([1, 2, 3, 4, 5, 5, 5]) == 1.5811388300841898
func standardDeviation(numbers: [Double]) -> Double {
    return sqrt(variance(numbers: numbers))
}

// Given array of numbers, return the covariance
// covariance([1, 2, 3, 4, 5], [1, 2, 3, 4, 5]) == 2.0
// covariance([1, 2, 3, 4, 5, 5], [1, 2, 3, 4, 5, 5]) == 2.5
// covariance([1, 2, 3, 4, 5, 5, 5], [1, 2, 3, 4, 5, 5, 5]) == 2.3333333333333335
func covariance(numbers1: [Double], numbers2: [Double

func rescaleToUnit(numbers: [Double]) -> [Double] {
    // 1. Find the minimum and maximum values in the array
    let min = numbers.min()!
    let max = numbers.max()!

    // 2. Calculate the range of the values
    let range = max - min

    // 3. Apply the linear transformation to each element
    return numbers.map { (value) -> Double in
        // 4. Apply the linear transformation to the value
        let transformedValue = (value - min) / range
        // 5. Return the transformed value
        return transformedValue
    }
}
```swift
// Given array of numbers (of at least two elements), apply a linear transform to that array,
// such that the smallest number will become 0 and the largest will become 1
// rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0]) == [0.0, 0.25, 0.5, 0.75, 1.0]
func rescaleToUnit(numbers: [Double]) -> [Double] {
    // 1. Find the minimum and maximum values in the array
    let min = numbers.min()!
    let max = numbers.max()!

    // 2. Calculate the range of the values
    let range = max - min

    // 3. Apply the linear transformation to each element
    return numbers.map { (value) -> Double in
        // 4. Apply the linear transformation to the value
        let transformedValue = (value - min) / range
        // 5. Return the transformed value
        return transformedValue
    }
}
<|file_separator|>

func filterIntegers(values: [AnyHashable]) -> [Int] {
    return values.filter {
        if let _ = $0 as? Int {
            return true
        }
        return false
    }
}
```swift
// Filter given array of any swiftthon values only for integers
// filterIntegers(values: ["a", 3.14, 5]) == [5]
// filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [1, 2, 3]
func filterIntegers(values: [AnyHashable]) -> [Int] {
    return values.filter {
        if let _ = $0 as? Int {
            return true
        }
        return false
    }
}
<|file_separator|>
return values.filter { // cannot convert return expression of type '[AnyHashable]' to return type '[Int]'

func filterIntegers(values: [AnyHashable]) -> [Int] {
    var filteredValues = [Int]()
    for value in values {
        if let intValue = value as? Int {
            filteredValues.append(intValue)
        }
    }
    return filteredValues
}
```swift
// Filter given array of any swiftthon values only for integers
// filterIntegers(values: ["a", 3.14, 5]) == [5]
// filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [1, 2, 3]
func filterIntegers(values: [AnyHashable]) -> [Int] {
    var filteredValues = [Int]()
    for value in values {
        if let intValue = value as? Int {
            filteredValues.append(intValue)
        }
    }
    return filteredValues
}
<|file_separator|>

func filterIntegers(values: [AnyHashable]) -> [Int] {
    return values.filter {
        if let _ = $0 as? Int {
            return true
        }
        return false
    }
}

func filterStrings(values: [AnyHashable]) -> [String] {
    return values.filter {
        if let _ = $0 as? String {
            return true
        }
        return false
    }
}

func filterArrays(values: [AnyHashable]) -> [[AnyHashable]] {
    return values.filter {
        if let _ = $0 as? [AnyHashable] {
            return true
        }
        return false
    }
}

func filterDictionaries(values: [AnyHashable]) -> [[AnyHashable : AnyHashable]] {
    return values.filter {
        if let _ = $0 as? [AnyHashable : AnyHashable] {
            return true
        }
        return false
    }
}

func filterBooleans(values: [AnyHashable]) -> [Bool] {
    return values.filter {
        if let _ = $0 as? Bool {
            return true
        }
        return false
    }
}

func filterNils(values: [AnyHashable]) -> [AnyHashable?] {
    return values.filter {
        if let _ = $0 as? AnyHashable {
            return true
        }
        return false
    }
}

func filterNumbers(values: [AnyHashable]) -> [Double] {
    return values.filter {
        if let _ = $0 as? Double {
            return true
        }
        return false
    }
}
```swift
// Filter given array of any swiftthon values only for integers
// filterIntegers(values: ["a", 3.14, 5]) == [5]
// filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [1, 2, 3]
func filterIntegers(values: [AnyHashable]) -> [Int] {
    return values.filter {
        if let _ = $0 as? Int {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for strings
// filterStrings(values: ["a", 3.14, 5]) == ["a"]
// filterStrings(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == ["abc"]
func filterStrings(values: [AnyHashable]) -> [String] {
    return values.filter {
        if let _ = $0 as? String {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for arrays
// filterArrays(values: ["a", 3.14, 5]) == [["a"]]
// filterArrays(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [[], [:] as [AnyHashable : AnyHashable]]
func filterArrays(values: [AnyHashable]) -> [[AnyHashable]] {
    return values.filter {
        if let _ = $0 as? [AnyHashable] {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for dictionaries
// filterDictionaries(values: ["a", 3.14, 5]) == [[:]]
// filterDictionaries(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable : AnyHashable]]) == [[:]]
func filterDictionaries(values: [AnyHashable]) -> [[AnyHashable : AnyHashable]] {
    return values.filter {
        if let _ = $0 as? [AnyHashable : AnyHashable] {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for booleans
// filterBooleans(values: ["a", 3.14, 5]) == [false]
// filterBooleans(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable : AnyHashable]]) == [false]
func filterBooleans(values: [AnyHashable]) -> [Bool] {
    return values.filter {
        if let _ = $0 as? Bool {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for nil
// filterNils(values: ["a", 3.14, 5]) == [nil]
// filterNils(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable : AnyHashable]]) == [nil]
func filterNils(values: [AnyHashable]) -> [AnyHashable?] {
    return values.filter {
        if let _ = $0 as? AnyHashable {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for numbers
// filterNumbers(values: ["a", 3.14, 5]) == [3.14, 5]
// filterNumbers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable : AnyHashable]]) == [3.14, 5]
func filterNumbers(values: [AnyHashable]) -> [Double] {
    return values.filter {
        if let _ = $0 as? Double {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for strings
// filterStrings(values: ["a", 3.14, 5]) == ["a"]
// filterStrings(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable : AnyHashable]]) == ["abc"]
func filterStrings(values: [AnyHashable]) -> [String] {
    return values.filter {
        if let _ = $0 as? String {
            return true
        }
        return false
    }
}

// Filter given
return values.filter { // cannot convert return expression of type '[AnyHashable]' to return type '[Int]'
return values.filter { // cannot convert return expression of type '[AnyHashable]' to return type '[String]'
return values.filter { // cannot convert return expression of type '[AnyHashable]' to return type '[[AnyHashable]]'
return values.filter { // cannot convert return expression of type '[AnyHashable]' to return type '[[AnyHashable : AnyHashable]]'
return values.filter { // cannot convert return expression of type '[AnyHashable]' to return type '[Bool]'
if let _ = $0 as? AnyHashable { // conditional cast from 'AnyHashable' to 'AnyHashable' always succeeds
return values.filter { // cannot convert return expression of type '[AnyHashable]' to return type '[Double]'

func filterIntegers(values: [AnyHashable]) -> [Int] {
    return values.filter {
        if let _ = $0 as? Int {
            return true
        }
        return false
    }
}
```swift
// Filter given array of any swiftthon values only for integers
// filterIntegers(values: ["a", 3.14, 5]) == [5]
// filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [1, 2, 3]
func filterIntegers(values: [AnyHashable]) -> [Int] {
    return values.filter {
        if let _ = $0 as? Int {
            return true
        }
        return false
    }
}
<|file_separator|>
return values.filter { // cannot convert return expression of type '[AnyHashable]' to return type '[Int]'

func filterIntegers(values: [AnyHashable]) -> [Int] {
    return values.filter { (value) -> Bool in
        if let _ = value as? Int {
            return true
        }
        return false
    }
}

func filterStrings(values: [AnyHashable]) -> [String] {
    return values.filter { (value) -> Bool in
        if let _ = value as? String {
            return true
        }
        return false
    }
}

func filterArrays(values: [AnyHashable]) -> [[AnyHashable]] {
    return values.filter { (value) -> Bool in
        if let _ = value as? [AnyHashable] {
            return true
        }
        return false
    }
}

func filterDictionaries(values: [AnyHashable]) -> [[AnyHashable : AnyHashable]] {
    return values.filter { (value) -> Bool in
        if let _ = value as? [AnyHashable : AnyHashable] {
            return true
        }
        return false
    }
}

func filterBooleans(values: [AnyHashable]) -> [Bool] {
    return values.filter { (value) -> Bool in
        if let _ = value as? Bool {
            return true
        }
        return false
    }
}

func filterNils(values: [AnyHashable]) -> [AnyHashable] {
    return values.filter { (value) -> Bool in
        if value == nil {
            return true
        }
        return false
    }
}

func filterNumbers(values: [AnyHashable]) -> [Double] {
    return values.filter { (value) -> Bool in
        if let _ = value as? Double {
            return true
        }
        return false
    }
}
```swift
// Filter given array of any swiftthon values only for integers
// filterIntegers(values: ["a", 3.14, 5]) == [5]
// filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [1, 2, 3]
func filterIntegers(values: [AnyHashable]) -> [Int] {
    return values.filter { (value) -> Bool in
        if let _ = value as? Int {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for strings
// filterStrings(values: ["a", 3.14, 5]) == ["a"]
// filterStrings(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == ["abc"]
func filterStrings(values: [AnyHashable]) -> [String] {
    return values.filter { (value) -> Bool in
        if let _ = value as? String {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for arrays
// filterArrays(values: ["a", 3.14, 5]) == []
// filterArrays(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [[], []]
func filterArrays(values: [AnyHashable]) -> [[AnyHashable]] {
    return values.filter { (value) -> Bool in
        if let _ = value as? [AnyHashable] {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for dictionaries
// filterDictionaries(values: ["a", 3.14, 5]) == []
// filterDictionaries(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [[:], [:]]
func filterDictionaries(values: [AnyHashable]) -> [[AnyHashable : AnyHashable]] {
    return values.filter { (value) -> Bool in
        if let _ = value as? [AnyHashable : AnyHashable] {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for booleans
// filterBooleans(values: ["a", 3.14, 5]) == []
// filterBooleans(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [false, true]
func filterBooleans(values: [AnyHashable]) -> [Bool] {
    return values.filter { (value) -> Bool in
        if let _ = value as? Bool {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for nil values
// filterNils(values: ["a", 3.14, 5]) == [5]
// filterNils(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [1, 2, 3]
func filterNils(values: [AnyHashable]) -> [AnyHashable] {
    return values.filter { (value) -> Bool in
        if value == nil {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for numbers
// filterNumbers(values: ["a", 3.14, 5]) == [3.14, 5]
// filterNumbers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [1, 2, 3]
func filterNumbers(values: [AnyHashable]) -> [Double] {
    return values.filter { (value) -> Bool in
        if let _ = value as? Double {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for strings
// filterStrings(values: ["a", 3.14, 5]) == ["a"]
// filterStrings(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == ["abc"]
func filterStrings(values: [AnyHashable]) -> [String] {
    return values.filter { (value) -> Bool in
        if let _ = value as? String {
            return true
        }
        return false
return values.filter { (value) -> Bool in // cannot convert return expression of type '[AnyHashable]' to return type '[Int]'
return values.filter { (value) -> Bool in // cannot convert return expression of type '[AnyHashable]' to return type '[String]'
return values.filter { (value) -> Bool in // cannot convert return expression of type '[AnyHashable]' to return type '[[AnyHashable]]'
return values.filter { (value) -> Bool in // cannot convert return expression of type '[AnyHashable]' to return type '[[AnyHashable : AnyHashable]]'
return values.filter { (value) -> Bool in // cannot convert return expression of type '[AnyHashable]' to return type '[Bool]'
if value == nil { // comparing non-optional value of type 'AnyHashable' to 'nil' always returns false
return values.filter { (value) -> Bool in // cannot convert return expression of type '[AnyHashable]' to return type '[Double]'

func filterIntegers(values: [AnyHashable]) -> [Int] {
    return values.filter {
        if let _ = $0 as? Int {
            return true
        }
        return false
    }
}
```swift
// Filter given array of any swiftthon values only for integers
// filterIntegers(values: ["a", 3.14, 5]) == [5]
// filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [1, 2, 3]
func filterIntegers(values: [AnyHashable]) -> [Int] {
    return values.filter {
        if let _ = $0 as? Int {
            return true
        }
        return false
    }
}
<|file_separator|>
return values.filter { // cannot convert return expression of type '[AnyHashable]' to return type '[Int]'

func filterIntegers(values: [AnyHashable]) -> [Int] {
    return values.filter {
        if let _ = $0 as? Int {
            return true
        } else {
            return false
        }
    }
}
```swift
// Filter given array of any swiftthon values only for integers
// filterIntegers(values: ["a", 3.14, 5]) == [5]
// filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [1, 2, 3]
func filterIntegers(values: [AnyHashable]) -> [Int] {
    return values.filter {
        if let _ = $0 as? Int {
            return true
        } else {
            return false
        }
    }
}
<|file_separator|>
return values.filter { // cannot convert return expression of type '[AnyHashable]' to return type '[Int]'

func filterIntegers(values: [AnyHashable]) -> [Int] {
    return values.filter { (value) -> Bool in
        if let _ = value as? Int {
            return true
        }
        return false
    }
}

func filterStrings(values: [AnyHashable]) -> [String] {
    return values.filter { (value) -> Bool in
        if let _ = value as? String {
            return true
        }
        return false
    }
}

func filterArrays(values: [AnyHashable]) -> [[AnyHashable]] {
    return values.filter { (value) -> Bool in
        if let _ = value as? [AnyHashable] {
            return true
        }
        return false
    }
}

func filterDictionaries(values: [AnyHashable]) -> [[String : AnyHashable]] {
    return values.filter { (value) -> Bool in
        if let _ = value as? [String : AnyHashable] {
            return true
        }
        return false
    }
}
```swift
// Filter given array of any swiftthon values only for integers
// filterIntegers(values: ["a", 3.14, 5]) == [5]
// filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [1, 2, 3]
func filterIntegers(values: [AnyHashable]) -> [Int] {
    return values.filter { (value) -> Bool in
        if let _ = value as? Int {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for strings
// filterStrings(values: ["a", 3.14, 5]) == ["a"]
// filterStrings(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == ["abc"]
func filterStrings(values: [AnyHashable]) -> [String] {
    return values.filter { (value) -> Bool in
        if let _ = value as? String {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for arrays
// filterArrays(values: ["a", 3.14, 5]) == [["a"]]
// filterArrays(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [[1, 2, 3], ["abc"]]
func filterArrays(values: [AnyHashable]) -> [[AnyHashable]] {
    return values.filter { (value) -> Bool in
        if let _ = value as? [AnyHashable] {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for dictionaries
// filterDictionaries(values: ["a", 3.14, 5]) == [["a": "a"]]
// filterDictionaries(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [["1": 1], ["2": 2], ["3": 3], ["abc": "abc"]]
func filterDictionaries(values: [AnyHashable]) -> [[String : AnyHashable]] {
    return values.filter { (value) -> Bool in
        if let _ = value as? [String : AnyHashable] {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for dictionaries
// filterDictionaries(values: ["a", 3.14, 5]) == [["a": "a"]]
// filterDictionaries(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [["1": 1], ["2": 2], ["3": 3], ["abc": "abc"]]
func filterDictionaries(values: [AnyHashable]) -> [[String : AnyHashable]] {
    return values.filter { (value) -> Bool in
        if let _ = value as? [String : AnyHashable] {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for dictionaries
// filterDictionaries(values: ["a", 3.14, 5]) == [["a": "a"]]
// filterDictionaries(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [["1": 1], ["2": 2], ["3": 3], ["abc": "abc"]]
func filterDictionaries(values: [AnyHashable]) -> [[String : AnyHashable]] {
    return values.filter { (value) -> Bool in
        if let _ = value as? [String : AnyHashable] {
            return true
        }
        return false
    }
}

// Filter given array of any swiftthon values only for dictionaries
// filterDictionaries(values: ["a", 3.14, 5]) == [["a": "a"]]
// filterDictionaries(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [["1": 1], ["2": 2], ["3": 3], ["abc": "abc"]]
func filterDictionaries(values: [AnyHashable]) -> [[String : AnyHashable]] {
    return values.filter { (value) -> Bool in
        if let _ = value as? [String : AnyHashable] {
            return true
        }
        return false
    }
}

//
return values.filter { (value) -> Bool in // cannot convert return expression of type '[AnyHashable]' to return type '[Int]'
return values.filter { (value) -> Bool in // cannot convert return expression of type '[AnyHashable]' to return type '[String]'
return values.filter { (value) -> Bool in // cannot convert return expression of type '[AnyHashable]' to return type '[[AnyHashable]]'
return values.filter { (value) -> Bool in // cannot convert return expression of type '[AnyHashable]' to return type '[[String : AnyHashable]]'

func filterIntegers(values: [AnyHashable]) -> [Int] {
    var filteredValues = [Int]()
    for value in values {
        if let intValue = value as? Int {
            filteredValues.append(intValue)
        }
    }
    return filteredValues
}
```swift
// Filter given array of any swiftthon values only for integers
// filterIntegers(values: ["a", 3.14, 5]) == [5]
// filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [1, 2, 3]
func filterIntegers(values: [AnyHashable]) -> [Int] {
    var filteredValues = [Int]()
    for value in values {
        if let intValue = value as? Int {
            filteredValues.append(intValue)
        }
    }
    return filteredValues
}
<|file_separator|>

func filterIntegers(values: [AnyHashable]) -> [Int] {
    return values.filter { $0 is Int }.map { $0 as! Int }
}
```swift
// Filter given array of any swiftthon values only for integers
// filterIntegers(values: ["a", 3.14, 5]) == [5]
// filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) == [1, 2, 3]
func filterIntegers(values: [AnyHashable]) -> [Int] {
    return values.filter { $0 is Int }.map { $0 as! Int }
}
<|file_separator|>

func strlen(string: String) -> Int {
    return string.count
}

func arrlen(arr: [String]) -> Int {
    return arr.count
}

func arrlen(arr: [Int]) -> Int {
    return arr.count
}

func arrlen(arr: [Bool]) -> Int {
    return arr.count
}

func arrlen(arr: [Float]) -> Int {
    return arr.count
}

func arrlen(arr: [Double]) -> Int {
    return arr.count
}

func arrlen(arr: [Character]) -> Int {
    return arr.count
}

func arrlen(arr: [String.UTF8View]) -> Int {
    return arr.count
}

func arrlen(arr: [String.UnicodeScalarView]) -> Int {
    return arr.count
}

func arrlen(arr: [String.CodeUnit]) -> Int {
    return arr.count
}

func arrlen(arr: [String.CodeUnitView]) -> Int {
    return arr.count
}

func arrlen(arr: [String.UTF16CodeUnit]) -> Int {
    return arr.count
}

func arrlen(arr: [String.UTF16CodeUnitView]) -> Int {
    return arr.count
}

func arrlen(arr: [String.UTF32CodeUnit]) -> Int {
    return arr.count
}

func arrlen(arr: [String.UTF32CodeUnitView]) -> Int {
    return arr.count
}
```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given array
// arrlen(arr: []) == 0
// arrlen(arr: ["a", "b", "c"]) == 3
func arrlen(arr: [String]) -> Int {
    return arr.count
}

// Return length of given array
// arrlen(arr: []) == 0
// arrlen(arr: ["a", "b", "c"]) == 3
func arrlen(arr: [Int]) -> Int {
    return arr.count
}

// Return length of given array
// arrlen(arr: []) == 0
// arrlen(arr: ["a", "b", "c"]) == 3
func arrlen(arr: [Bool]) -> Int {
    return arr.count
}

// Return length of given array
// arrlen(arr: []) == 0
// arrlen(arr: ["a", "b", "c"]) == 3
func arrlen(arr: [Float]) -> Int {
    return arr.count
}

// Return length of given array
// arrlen(arr: []) == 0
// arrlen(arr: ["a", "b", "c"]) == 3
func arrlen(arr: [Double]) -> Int {
    return arr.count
}

// Return length of given array
// arrlen(arr: []) == 0
// arrlen(arr: ["a", "b", "c"]) == 3
func arrlen(arr: [Character]) -> Int {
    return arr.count
}

// Return length of given array
// arrlen(arr: []) == 0
// arrlen(arr: ["a", "b", "c"]) == 3
func arrlen(arr: [String.UTF8View]) -> Int {
    return arr.count
}

// Return length of given array
// arrlen(arr: []) == 0
// arrlen(arr: ["a", "b", "c"]) == 3
func arrlen(arr: [String.UnicodeScalarView]) -> Int {
    return arr.count
}

// Return length of given array
// arrlen(arr: []) == 0
// arrlen(arr: ["a", "b", "c"]) == 3
func arrlen(arr: [String.CodeUnit]) -> Int {
    return arr.count
}

// Return length of given array
// arrlen(arr: []) == 0
// arrlen(arr: ["a", "b", "c"]) == 3
func arrlen(arr: [String.CodeUnitView]) -> Int {
    return arr.count
}

// Return length of given array
// arrlen(arr: []) == 0
// arrlen(arr: ["a", "b", "c"]) == 3
func arrlen(arr: [String.CodeUnitView]) -> Int {
    return arr.count
}

// Return length of given array
// arrlen(arr: []) == 0
// arrlen(arr: ["a", "b", "c"]) == 3
func arrlen(arr: [String.UTF16CodeUnit]) -> Int {
    return arr.count
}

// Return length of given array
// arrlen(arr: []) == 0
// arrlen(arr: ["a", "b", "c"]) == 3
func arrlen(arr: [String.UTF16CodeUnitView]) -> Int {
    return arr.count
}

// Return length of given array
// arrlen(arr: []) == 0
// arrlen(arr: ["a", "b", "c"]) == 3
func arrlen(arr: [String.UTF32CodeUnit]) -> Int {
    return arr.count
}

// Return length of given array
// arrlen(arr: []) == 0
// arrlen(arr: ["a", "b", "c"]) == 3
func arrlen(arr: [String.UTF32CodeUnitView]) -> Int {
    return arr.count
}

// Return length of given array
// arrlen(arr: []) == 0
// arrlen(arr: ["a", "b", "c"]) == 3
func arrlen(arr: [String.UTF32CodeUnitView]) -> Int {
    return arr.count
}

// Return length of given array
// arrlen(arr: []) == 0
// arrlen(arr: ["a", "b", "c"]) == 
func arrlen(arr: [String.CodeUnit]) -> Int { // 'CodeUnit' is not a member type of struct 'Swift.String'
func arrlen(arr: [String.CodeUnitView]) -> Int { // 'CodeUnitView' is not a member type of struct 'Swift.String'
func arrlen(arr: [String.UTF16CodeUnit]) -> Int { // 'UTF16CodeUnit' is not a member type of struct 'Swift.String'
func arrlen(arr: [String.UTF16CodeUnitView]) -> Int { // 'UTF16CodeUnitView' is not a member type of struct 'Swift.String'
func arrlen(arr: [String.UTF32CodeUnit]) -> Int { // 'UTF32CodeUnit' is not a member type of struct 'Swift.String'
func arrlen(arr: [String.UTF32CodeUnitView]) -> Int { // 'UTF32CodeUnitView' is not a member type of struct 'Swift.String'

func strlen(string: String) -> Int {
    return string.count
}
```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string

func strlen(string: String) -> Int {
    return string.count
}

func strlength(string: String) -> Int {
    return string.count
}

func strsize(string: String) -> Int {
    return string.count
}
```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strsize(string: "") == 0
// strsize(string: "abc") == 3
func strsize(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strsize(string: "") == 0
// strsize(string: "abc") == 3
func strsize(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strsize(string: "") == 0
// strsize(string: "abc") == 3
func strsize(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strsize(string: "") == 0
// strsize(string: "abc") == 3
func strsize(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strsize(string: "") == 0
// strsize(string: "abc") == 3
func strsize(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strsize(string: "") == 0
// strsize(string: "abc") == 3
func strsize(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strsize(string: "") == 0
// strsize(string: "abc") == 3
func strsize(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strsize(string: "") == 0
// strsize(string: "abc") == 3
func strsize(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strsize(string: "") == 0
// strsize(string: "abc") == 3
func strsize(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string

func strlen(string: String) -> Int {
    return string.count
}
```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string

func strlen(string: String) -> Int {
    return string.count
}
```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string

func strlen(string: String) -> Int {
  return string.count
}

func strLen(string: String) -> Int {
  return string.count
}
```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string.count
}

// Return length of given string
// strLen(string: "") == 0
// strLen(string: "abc") == 3
func strLen(string: String) -> Int {
  return string

func strlen(string: String) -> Int {
    return string.count
}

func strlength(string: String) -> Int {
    return string.count
}
```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string

func strlen(string: String) -> Int {
    return string.count
}

func arrlen(arr: [Int]) -> Int {
    return arr.count
}

func dictlen(dict: [String: Int]) -> Int {
    return dict.count
}
```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given array
// arrlen(arr: []) == 0
// arrlen(arr: [1, 2, 3]) == 3
func arrlen(arr: [Int]) -> Int {
    return arr.count
}

// Return length of given dictionary
// dictlen(dict: [:]) == 0
// dictlen(dict: ["a": 1, "b": 2, "c": 3]) == 3
func dictlen(dict: [String: Int]) -> Int {
    return dict.count
}

// Return length of given dictionary
// dictlen(dict: [:]) == 0
// dictlen(dict: ["a": 1, "b": 2, "c": 3]) == 3
func dictlen(dict: [String: Int]) -> Int {
    return dict.count
}

// Return length of given dictionary
// dictlen(dict: [:]) == 0
// dictlen(dict: ["a": 1, "b": 2, "c": 3]) == 3
func dictlen(dict: [String: Int]) -> Int {
    return dict.count
}

// Return length of given dictionary
// dictlen(dict: [:]) == 0
// dictlen(dict: ["a": 1, "b": 2, "c": 3]) == 3
func dictlen(dict: [String: Int]) -> Int {
    return dict.count
}

// Return length of given dictionary
// dictlen(dict: [:]) == 0
// dictlen(dict: ["a": 1, "b": 2, "c": 3]) == 3
func dictlen(dict: [String: Int]) -> Int {
    return dict.count
}

// Return length of given dictionary
// dictlen(dict: [:]) == 0
// dictlen(dict: ["a": 1, "b": 2, "c": 3]) == 3
func dictlen(dict: [String: Int]) -> Int {
    return dict.count
}

// Return length of given dictionary
// dictlen(dict: [:]) == 0
// dictlen(dict: ["a": 1, "b": 2, "c": 3]) == 3
func dictlen(dict: [String: Int]) -> Int {
    return dict.count
}

// Return length of given dictionary
// dictlen(dict: [:]) == 0
// dictlen(dict: ["a": 1, "b": 2, "c": 3]) == 3
func dictlen(dict: [String: Int]) -> Int {
    return dict.count
}

// Return length of given dictionary
// dictlen(dict: [:]) == 0
// dictlen(dict: ["a": 1, "b": 2, "c": 3]) == 3
func dictlen(dict: [String: Int]) -> Int {
    return dict.count
}

// Return length of given dictionary
// dictlen(dict: [:]) == 0
// dictlen(dict: ["a": 1, "b": 2, "c": 3]) == 3
func dictlen(dict: [String: Int]) -> Int {
    return dict.count
}

// Return length of given dictionary
// dictlen(dict: [:]) == 0
// dictlen(dict: ["a": 1, "b": 2, "c": 3]) == 3
func dictlen(dict: [String: Int]) -> Int {
    return dict.count
}

// Return length of given dictionary
// dictlen(dict: [:]) == 0
// dictlen(dict: ["a": 1, "b": 2, "c": 3]) == 3
func dictlen(dict: [String: Int]) -> Int {
    return dict.count
}

// Return length of given dictionary
// dictlen(dict: [:]) == 0
// dictlen(dict: ["a": 1, "b": 2, "c": 3]) == 3
func dictlen(dict: [String: Int]) -> Int {
    return dict.count
}

// Return length of given dictionary
// dictlen(dict: [:]) == 0
// dictlen(dict: ["a": 1, "b": 2, "c": 3]) == 3

func strlen(string: String) -> Int {
    return string.count
}

func strlength(string: String) -> Int {
    return string.count
}
```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string

func strlen(string: String) -> Int {
    return string.count
}

func strlength(string: String) -> Int {
    return string.count
}
```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string.count
}

// Return length of given string
// strlength(string: "") == 0
// strlength(string: "abc") == 3
func strlength(string: String) -> Int {
    return string

func largestDivisor(n: Int) -> Int {
    var divisor = 1
    var largest = 0
    while divisor <= n {
        if n % divisor == 0 {
            largest = divisor
        }
        divisor += 1
    }
    return largest
}

func smallestDivisor(n: Int) -> Int {
    var divisor = n
    var smallest = n
    while divisor >= 1 {
        if n % divisor == 0 {
            smallest = divisor
        }
        divisor -= 1
    }
    return smallest
}

func sum(n: Int) -> Int {
    var sum = 0
    var i = 1
    while i <= n {
        sum += i
        i += 1
    }
    return sum
}

func sum35(n: Int) -> Int {
    var sum = 0
    var i = 1
    while i <= n {
        if i % 3 == 0 || i % 5 == 0 {
            sum += i
        }
        i += 1
    }
    return sum
}

func sum35(n: Int) -> Int {
    var sum = 0
    var i = 1
    while i <= n {
        if i % 3 == 0 && i % 5 == 0 {
            sum += i
        } else if i % 3 == 0 || i % 5 == 0 {
            sum += i
        }
        i += 1
    }
    return sum
}

func sum35(n: Int) -> Int {
    var sum = 0
    var i = 1
    while i <= n {
        if (i % 3 == 0 || i % 5 == 0) && (i % 3 == 0 && i % 5 == 0) {
            sum += i
        } else if i % 3 == 0 || i % 5 == 0 {
            sum += i
        }
        i += 1
    }
    return sum
}
```swift
// For a given number n, find the largest number that divides n evenly, smaller than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
    var divisor = 1
    var largest = 0
    while divisor <= n {
        if n % divisor == 0 {
            largest = divisor
        }
        divisor += 1
    }
    return largest
}

// For a given number n, find the smallest number that divides n evenly, larger than n
// smallestDivisor(n: 15) == 5
func smallestDivisor(n: Int) -> Int {
    var divisor = n
    var smallest = n
    while divisor >= 1 {
        if n % divisor == 0 {
            smallest = divisor
        }
        divisor -= 1
    }
    return smallest
}

// For a given number n, find the sum of all numbers from 1 to n
// sum(n: 5) == 15
func sum(n: Int) -> Int {
    var sum = 0
    var i = 1
    while i <= n {
        sum += i
        i += 1
    }
    return sum
}

// For a given number n, find the sum of all numbers from 1 to n, but only if the number is divisible by 3 or 5
// sum35(n: 10) == 23
func sum35(n: Int) -> Int {
    var sum = 0
    var i = 1
    while i <= n {
        if i % 3 == 0 || i % 5 == 0 {
            sum += i
        }
        i += 1
    }
    return sum
}

// For a given number n, find the sum of all numbers from 1 to n, but only if the number is divisible by 3 or 5, and only if the number is divisible by 3 and 5, return 0 if n is not divisible by 3 or 5
// sum35(n: 10) == 23
func sum35(n: Int) -> Int {
    var sum = 0
    var i = 1
    while i <= n {
        if i % 3 == 0 && i % 5 == 0 {
            sum += i
        } else if i % 3 == 0 || i % 5 == 0 {
            sum += i
        }
        i += 1
    }
    return sum
}

// For a given number n, find the sum of all numbers from 1 to n, but only if the number is divisible by 3 or 5, and only if the number is divisible by 3 and 5, return 0 if n is not divisible by 3 or 5
// sum35(n: 10) == 23
func sum35(n: Int) -> Int {
    var sum = 0
    var i = 1
    while i <= n {
        if (i % 3 == 0 || i % 5 == 0) && (i % 3 == 0 && i % 5 == 0) {
            sum += i
        } else if i % 3 == 0 || i % 5 == 0 {
            sum += i
        }
        i += 1
    }
    return sum
}

// For a given number n, find the sum of all numbers from 1 to n, but only if the number is divisible by 3 or 5, and only if the number is divisible by 3 and 5, return 0 if n is not divisible by 3 or 5
// sum35(n: 10) == 23
func sum35(n: Int) -> Int {
    var sum = 0
    var i = 1
    while i <= n {
        if (i % 3 == 0 || i % 5 == 0) && (i % 3 == 0 && i % 5 == 0) {
            sum += i
        } else if i % 3 == 0 || i % 5 == 0 {
            sum += i
        }
        i += 1
    }
    return sum
}

// For a given number n, find the sum of all numbers from 1 to n, but only if the number is divisible by 3 or 5, and only if the number is divisible by 3 and 5, return 0 if n is not divisible by 3 or 5
// sum35(n: 10) == 23
func
func sum35(n: Int) -> Int { // invalid redeclaration of 'sum35(n:)'
func sum35(n: Int) -> Int { // invalid redeclaration of 'sum35(n:)'

func largestDivisor(n: Int) -> Int {
    var divisor = 1
    var largest = 0
    while divisor <= n {
        if n % divisor == 0 {
            largest = divisor
        }
        divisor += 1
    }
    return largest
}

func smallestDivisor(n: Int) -> Int {
    var divisor = n
    var smallest = n
    while divisor >= 1 {
        if n % divisor == 0 {
            smallest = divisor
        }
        divisor -= 1
    }
    return smallest
}

func largestDivisor(n: Int) -> Int {
    var divisor = n
    var largest = 0
    while divisor >= 1 {
        if n % divisor == 0 {
            largest = divisor
        }
        divisor -= 1
    }
    return largest
}

func smallestDivisor(n: Int) -> Int {
    var divisor = 1
    var smallest = n
    while divisor <= n {
        if n % divisor == 0 {
            smallest = divisor
        }
        divisor += 1
    }
    return smallest
}
```swift
// For a given number n, find the largest number that divides n evenly, smaller than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
    var divisor = 1
    var largest = 0
    while divisor <= n {
        if n % divisor == 0 {
            largest = divisor
        }
        divisor += 1
    }
    return largest
}

// For a given number n, find the smallest number that divides n evenly, larger than n
// smallestDivisor(n: 15) == 5
func smallestDivisor(n: Int) -> Int {
    var divisor = n
    var smallest = n
    while divisor >= 1 {
        if n % divisor == 0 {
            smallest = divisor
        }
        divisor -= 1
    }
    return smallest
}

// For a given number n, find the largest number that divides n evenly, larger than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
    var divisor = n
    var largest = 0
    while divisor >= 1 {
        if n % divisor == 0 {
            largest = divisor
        }
        divisor -= 1
    }
    return largest
}

// For a given number n, find the smallest number that divides n evenly, smaller than n
// smallestDivisor(n: 15) == 5
func smallestDivisor(n: Int) -> Int {
    var divisor = 1
    var smallest = n
    while divisor <= n {
        if n % divisor == 0 {
            smallest = divisor
        }
        divisor += 1
    }
    return smallest
}

// For a given number n, find the largest number that divides n evenly, smaller than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
    var divisor = n
    var largest = 0
    while divisor >= 1 {
        if n % divisor == 0 {
            largest = divisor
        }
        divisor -= 1
    }
    return largest
}

// For a given number n, find the smallest number that divides n evenly, larger than n
// smallestDivisor(n: 15) == 5
func smallestDivisor(n: Int) -> Int {
    var divisor = 1
    var smallest = n
    while divisor <= n {
        if n % divisor == 0 {
            smallest = divisor
        }
        divisor += 1
    }
    return smallest
}

// For a given number n, find the largest number that divides n evenly, larger than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
    var divisor = n
    var largest = 0
    while divisor >= 1 {
        if n % divisor == 0 {
            largest = divisor
        }
        divisor -= 1
    }
    return largest
}

// For a given number n, find the smallest number that divides n evenly, smaller than n
// smallestDivisor(n: 15) == 5
func smallestDivisor(n: Int) -> Int {
    var divisor = 1
    var smallest = n
    while divisor <= n {
        if n % divisor == 0 {
            smallest = divisor
        }
        divisor += 1
    }
    return smallest
}

// For a given number n, find the largest number that divides n evenly, smaller than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
    var divisor = n
    var largest = 0
    while divisor >= 1 {
        if n % divisor == 0 {
            largest = divisor
        }
        divisor -= 1
    }
    return largest
}

// For a given number n, find the smallest number that divides n evenly, larger than n
// smallestDivisor(n: 15) == 5
func smallestDivisor(n: Int) -> Int {
    var divisor = 1
    var smallest = n
    while divisor <= n {
        if n % divisor == 0 {
            smallest = divisor
        }
        divisor += 1
    }
    return smallest
}

// For a given number n, find the largest number that divides n evenly, larger than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
    var divisor = n
    var
func largestDivisor(n: Int) -> Int { // invalid redeclaration of 'largestDivisor(n:)'
func smallestDivisor(n: Int) -> Int { // invalid redeclaration of 'smallestDivisor(n:)'

func largestDivisor(n: Int) -> Int {
    var largest = 0
    for i in 1...n {
        if n % i == 0 && i > largest {
            largest = i
        }
    }
    return largest
}

func smallestDivisor(n: Int) -> Int {
    var smallest = n
    for i in 1...n {
        if n % i == 0 && i < smallest {
            smallest = i
        }
    }
    return smallest
}
```swift
// For a given number n, find the largest number that divides n evenly, smaller than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
    var largest = 0
    for i in 1...n {
        if n % i == 0 && i > largest {
            largest = i
        }
    }
    return largest
}

// For a given number n, find the smallest number that divides n evenly, larger than n
// smallestDivisor(n: 15) == 5
func smallestDivisor(n: Int) -> Int {
    var smallest = n
    for i in 1...n {
        if n % i == 0 && i < smallest {
            smallest = i
        }
    }
    return smallest
}

// For a given number n, find the largest number that divides n evenly, larger than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
    var largest = 0
    for i in 1...n {
        if n % i == 0 && i > largest {
            largest = i
        }
    }
    return largest
}

// For a given number n, find the smallest number that divides n evenly, smaller than n
// smallestDivisor(n: 15) == 5
func smallestDivisor(n: Int) -> Int {
    var smallest = n
    for i in 1...n {
        if n % i == 0 && i < smallest {
            smallest = i
        }
    }
    return smallest
}

// For a given number n, find the largest number that divides n evenly, smaller than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
    var largest = 0
    for i in 1...n {
        if n % i == 0 && i > largest {
            largest = i
        }
    }
    return largest
}

// For a given number n, find the smallest number that divides n evenly, larger than n
// smallestDivisor(n: 15) == 5
func smallestDivisor(n: Int) -> Int {
    var smallest = n
    for i in 1...n {
        if n % i == 0 && i < smallest {
            smallest = i
        }
    }
    return smallest
}

// For a given number n, find the largest number that divides n evenly, larger than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
    var largest = 0
    for i in 1...n {
        if n % i == 0 && i > largest {
            largest = i
        }
    }
    return largest
}

// For a given number n, find the smallest number that divides n evenly, smaller than n
// smallestDivisor(n: 15) == 5
func smallestDivisor(n: Int) -> Int {
    var smallest = n
    for i in 1...n {
        if n % i == 0 && i < smallest {
            smallest = i
        }
    }
    return smallest
}

// For a given number n, find the largest number that divides n evenly, larger than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
    var largest = 0
    for i in 1...n {
        if n % i == 0 && i > largest {
            largest = i
        }
    }
    return largest
}

// For a given number n, find the smallest number that divides n evenly, smaller than n
// smallestDivisor(n: 15) == 5
func smallestDivisor(n: Int) -> Int {
    var smallest = n
    for i in 1...n {
        if n % i == 0 && i < smallest {
            smallest = i
        }
    }
    return smallest
}

// For a given number n, find the largest number that divides n evenly, larger than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
    var largest = 0
    for i in 1...n {
        if n % i == 0 && i > largest {
            largest = i
        }
    }
    return largest
}

// For a given number n, find the smallest number that divides n evenly, smaller than n
 // XCTAssertTrue failed

func largestDivisor(n: Int) -> Int {
    var divisor = 1
    var largest = 0
    while divisor <= n {
        if n % divisor == 0 {
            largest = divisor
        }
        divisor += 1
    }
    return largest
}

func smallestDivisor(n: Int) -> Int {
    var divisor = 1
    var smallest = 0
    while divisor <= n {
        if n % divisor == 0 {
            smallest = divisor
        }
        divisor += 1
    }
    return smallest
}
```swift
// For a given number n, find the largest number that divides n evenly, smaller than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
    var divisor = 1
    var largest = 0
    while divisor <= n {
        if n % divisor == 0 {
            largest = divisor
        }
        divisor += 1
    }
    return largest
}

// For a given number n, find the smallest number that divides n evenly, larger than n
// smallestDivisor(n: 15) == 5
func smallestDivisor(n: Int) -> Int {
    var divisor = 1
    var smallest = 0
    while divisor <= n {
        if n % divisor == 0 {
            smallest = divisor
        }
        divisor += 1
    }
    return smallest
}

// For a given number n, find the largest number that divides n evenly, larger than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
    var divisor = 1
    var largest = 0
    while divisor <= n {
        if n % divisor == 0 {
            largest = divisor
        }
        divisor += 1
    }
    return largest
}

// For a given number n, find the smallest number that divides n evenly, smaller than n
// smallestDivisor(n: 15) == 5
func smallestDivisor(n: Int) -> Int {
    var divisor = 1
    var smallest = 0
    while divisor <= n {
        if n % divisor == 0 {
            smallest = divisor
        }
        divisor += 1
    }
    return smallest
}
<|file_separator|>
 // XCTAssertTrue failed

func largestDivisor(n: Int) -> Int {
    var divisor = 1
    var largest = 0
    
    while divisor <= n {
        if n % divisor == 0 {
            largest = divisor
        }
        divisor += 1
    }
    
    return largest
}
```swift
// For a given number n, find the largest number that divides n evenly, smaller than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
    var divisor = 1
    var largest = 0
    
    while divisor <= n {
        if n % divisor == 0 {
            largest = divisor
        }
        divisor += 1
    }
    
    return largest
}
<|file_separator|>
 // XCTAssertTrue failed

func largestDivisor(n: Int) -> Int {
    for i in (1...n).reversed() {
        if n % i == 0 {
            return i
        }
    }
    return 0
}
```swift
// For a given number n, find the largest number that divides n evenly, smaller than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
    for i in (1...n).reversed() {
        if n % i == 0 {
            return i
        }
    }
    return 0
}
<|file_separator|>
 // XCTAssertTrue failed

func largestDivisor(n: Int) -> Int {
  var divisor = 0
  for i in 1...n {
    if n % i == 0 {
      divisor = i
    }
  }
  return divisor
}
```swift
// For a given number n, find the largest number that divides n evenly, smaller than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
  var divisor = 0
  for i in 1...n {
    if n % i == 0 {
      divisor = i
    }
  }
  return divisor
}
<|file_separator|>
 // XCTAssertTrue failed

func largestDivisor(n: Int) -> Int {
  var divisor = 0
  for i in 1...n {
    if n % i == 0 {
      divisor = i
    }
  }
  return divisor
}
```swift
// For a given number n, find the largest number that divides n evenly, smaller than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
  var divisor = 0
  for i in 1...n {
    if n % i == 0 {
      divisor = i
    }
  }
  return divisor
}
<|file_separator|>
 // XCTAssertTrue failed

func largestDivisor(n: Int) -> Int {
    var divisor = 0
    for i in 1...n {
        if n % i == 0 {
            divisor = i
        }
    }
    return divisor
}
```swift
// For a given number n, find the largest number that divides n evenly, smaller than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
    var divisor = 0
    for i in 1...n {
        if n % i == 0 {
            divisor = i
        }
    }
    return divisor
}
<|file_separator|>
 // XCTAssertTrue failed

func largestDivisor(n: Int) -> Int {
    for i in (1...n).reversed() {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

func smallestDivisor(n: Int) -> Int {
    for i in (1...n).reversed() {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

func largestDivisor2(n: Int) -> Int {
    for i in (1...n) {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

func smallestDivisor2(n: Int) -> Int {
    for i in (1...n).reversed() {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

func largestDivisor3(n: Int) -> Int {
    for i in (1...n).reversed() {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

func smallestDivisor3(n: Int) -> Int {
    for i in (1...n) {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

func largestDivisor4(n: Int) -> Int {
    for i in (1...n).reversed() {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

func smallestDivisor4(n: Int) -> Int {
    for i in (1...n) {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

func largestDivisor5(n: Int) -> Int {
    for i in (1...n).reversed() {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

func smallestDivisor5(n: Int) -> Int {
    for i in (1...n) {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

func largestDivisor6(n: Int) -> Int {
    for i in (1...n).reversed() {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

func smallestDivisor6(n: Int) -> Int {
    for i in (1...n) {
        if n % i == 0 {
            return i
        }
    }
    return 0
}
```swift
// For a given number n, find the largest number that divides n evenly, smaller than n
// largestDivisor(n: 15) == 5
func largestDivisor(n: Int) -> Int {
    for i in (1...n).reversed() {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

// For a given number n, find the smallest number that divides n evenly, larger than n
// smallestDivisor(n: 15) == 15
func smallestDivisor(n: Int) -> Int {
    for i in (1...n).reversed() {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

// For a given number n, find the largest number that divides n evenly, larger than n
// largestDivisor(n: 15) == 15
func largestDivisor2(n: Int) -> Int {
    for i in (1...n) {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

// For a given number n, find the smallest number that divides n evenly, smaller than n
// smallestDivisor(n: 15) == 15
func smallestDivisor2(n: Int) -> Int {
    for i in (1...n).reversed() {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

// For a given number n, find the largest number that divides n evenly, smaller than n
// largestDivisor(n: 15) == 15
func largestDivisor3(n: Int) -> Int {
    for i in (1...n).reversed() {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

// For a given number n, find the smallest number that divides n evenly, larger than n
// smallestDivisor(n: 15) == 15
func smallestDivisor3(n: Int) -> Int {
    for i in (1...n) {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

// For a given number n, find the largest number that divides n evenly, larger than n
// largestDivisor(n: 15) == 15
func largestDivisor4(n: Int) -> Int {
    for i in (1...n).reversed() {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

// For a given number n, find the smallest number that divides n evenly, smaller than n
// smallestDivisor(n: 15) == 15
func smallestDivisor4(n: Int) -> Int {
    for i in (1...n) {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

// For a given number n, find the largest number that divides n evenly, larger than n
// largestDivisor(n: 15) == 15
func largestDivisor5(n: Int) -> Int {
    for i in (1...n).reversed() {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

// For a given number n, find the smallest number that divides n evenly, smaller than n
// smallestDivisor(n: 15) == 15
func smallestDivisor5(n: Int) -> Int {
    for i in (1...n) {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

// For a given number n, find the largest number that divides n evenly, larger than n
// largestDivisor(n: 15) == 15
func largestDivisor6(n: Int) -> Int {
    for i in (1...n).reversed() {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

// For a given number n, find the smallest number that divides n evenly, smaller than n
// smallestDivisor(n: 15) == 15
func smallestDivisor6(n: Int) -> Int {
    for i in (1...n) {
        if n % i == 0 {
            return i
        }
    }
    return 0
}

// For a given
 // XCTAssertTrue failed

func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      factors.append(i)
      n /= i
    } else {
      i += 1
    }
  }
  return factors
}
```swift
// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      factors.append(i)
      n /= i
    } else {
      i += 1
    }
  }
  return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      factors.append(i)
      n /= i
    } else {
      i += 1
    }
  }
  return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      factors.append(i)
      n /= i
    } else {
      i += 1
    }
  }
  return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      factors.append(i)
      n /= i
    } else {
      i += 1
    }
  }
  return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      factors.append(i)
      n /= i
    } else {
      i += 1
    }
  }
  return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i =

func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i = 2
    while i <= n {
        if n % i == 0 {
            factors.append(i)
            n /= i
        } else {
            i += 1
        }
    }
    return factors
}
```swift
// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i = 2
    while i <= n {
        if n % i == 0 {
            factors.append(i)
            n /= i
        } else {
            i += 1
        }
    }
    return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i = 2
    while i <= n {
        if n % i == 0 {
            factors.append(i)
            n /= i
        } else {
            i += 1
        }
    }
    return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i = 2
    while i <= n {
        if n % i == 0 {
            factors.append(i)
            n /= i
        } else {
            i += 1
        }
    }
    return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i = 2
    while i <= n {
        if n % i == 0 {
            factors.append(i)
            n /= i
        } else {
            i += 1
        }
    }
    return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i = 2
    while i <= n {
        if n % i == 0 {
            factors.append(i)
            n /= i
        } else {
            i += 1
        }
    }
    return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i =

func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      n /= i
      factors.append(i)
    } else {
      i += 1
    }
  }
  return factors
}
```swift
// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      n /= i
      factors.append(i)
    } else {
      i += 1
    }
  }
  return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      n /= i
      factors.append(i)
    } else {
      i += 1
    }
  }
  return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      n /= i
      factors.append(i)
    } else {
      i += 1
    }
  }
  return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      n /= i
      factors.append(i)
    } else {
      i += 1
    }
  }
  return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      n /= i
      factors.append(i)
    } else {
      i += 1
    }
  }
  return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i =

func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i = 2
    while i <= n {
        if n % i == 0 {
            n /= i
            factors.append(i)
            i = 2
        } else {
            i += 1
        }
    }
    return factors
}
```swift
// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i = 2
    while i <= n {
        if n % i == 0 {
            n /= i
            factors.append(i)
            i = 2
        } else {
            i += 1
        }
    }
    return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i = 2
    while i <= n {
        if n % i == 0 {
            n /= i
            factors.append(i)
            i = 2
        } else {
            i += 1
        }
    }
    return factors
}
<|file_separator|>

func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      factors.append(i)
      n /= i
    } else {
      i += 1
    }
  }
  return factors
}
```swift
// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      factors.append(i)
      n /= i
    } else {
      i += 1
    }
  }
  return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      factors.append(i)
      n /= i
    } else {
      i += 1
    }
  }
  return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      factors.append(i)
      n /= i
    } else {
      i += 1
    }
  }
  return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      factors.append(i)
      n /= i
    } else {
      i += 1
    }
  }
  return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      factors.append(i)
      n /= i
    } else {
      i += 1
    }
  }
  return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i =

func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i = 2
    while i <= n {
        if n % i == 0 {
            factors.append(i)
            n /= i
        } else {
            i += 1
        }
    }
    return factors
}
```swift
// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i = 2
    while i <= n {
        if n % i == 0 {
            factors.append(i)
            n /= i
        } else {
            i += 1
        }
    }
    return factors
}
<|file_separator|>

func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i = 2
    while i <= n {
        if n % i == 0 {
            factors.append(i)
            n /= i
        } else {
            i += 1
        }
    }
    return factors
}
```swift
// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i = 2
    while i <= n {
        if n % i == 0 {
            factors.append(i)
            n /= i
        } else {
            i += 1
        }
    }
    return factors
}
<|file_separator|>

func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      n /= i
      factors.append(i)
    } else {
      i += 1
    }
  }
  return factors
}
```swift
// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      n /= i
      factors.append(i)
    } else {
      i += 1
    }
  }
  return factors
}
<|file_separator|>

func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i = 2
    while i <= n {
        if n % i == 0 {
            n /= i
            factors.append(i)
        } else {
            i += 1
        }
    }
    return factors
}
```swift
// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i = 2
    while i <= n {
        if n % i == 0 {
            n /= i
            factors.append(i)
        } else {
            i += 1
        }
    }
    return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i = 2
    while i <= n {
        if n % i == 0 {
            n /= i
            factors.append(i)
        } else {
            i += 1
        }
    }
    return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i = 2
    while i <= n {
        if n % i == 0 {
            n /= i
            factors.append(i)
        } else {
            i += 1
        }
    }
    return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i = 2
    while i <= n {
        if n % i == 0 {
            n /= i
            factors.append(i)
        } else {
            i += 1
        }
    }
    return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i = 2
    while i <= n {
        if n % i == 0 {
            n /= i
            factors.append(i)
        } else {
            i += 1
        }
    }
    return factors
}

// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
    var factors = [Int]()
    var n = n
    var i =

func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      factors.append(i)
      n /= i
    } else {
      i += 1
    }
  }
  return factors
}
```swift
// Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// factorize(n: 8) == [2, 2, 2]
// factorize(n: 25) == [5, 5]
// factorize(n: 70) == [2, 5, 7]
func factorize(n: Int) -> [Int] {
  var factors = [Int]()
  var n = n
  var i = 2
  while i <= n {
    if n % i == 0 {
      factors.append(i)
      n /= i
    } else {
      i += 1
    }
  }
  return factors
}
<|file_separator|>

func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            result.append(number)
            seen[number] = 1
        } else {
            seen[number]! += 1
        }
    }
    return result
}
```swift
// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            result.append(number)
            seen[number] = 1
        } else {
            seen[number]! += 1
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Bool]()
    for number in numbers {
        if seen[number] == nil {
            result.append(number)
            seen[number] = true
        }
    }
    return result
}

func findMissing(numbers: [Int]) -> Int {
    var seen = [Int: Bool]()
    for number in numbers {
        seen[number] = true
    }
    for i in 1...numbers.count {
        if seen[i] == nil {
            return i
        }
    }
    return numbers.count + 1
}

func longestSubstring(string: String) -> Int {
    var seen = [Character: Int]()
    var result = 0
    var start = 0
    for (index, character) in string.enumerated() {
        if let lastIndex = seen[character] {
            if index - lastIndex > result {
                result = index - lastIndex
            }
            start = lastIndex + 1
        }
        seen[character] = index
    }
    return result
}

func adjacentElementsProduct(numbers: [Int]) -> Int {
    var result = 0
    for i in 0..<numbers.count - 1 {
        if result < numbers[i] * numbers[i + 1] {
            result = numbers[i] * numbers[i + 1]
        }
    }
    return result
}

func adjacentElementsSum(numbers: [Int]) -> Int {
    var result = 0
    for i in 0..<numbers.count - 1 {
        if result < numbers[i] + numbers[i + 1] {
            result = numbers[i] + numbers[i + 1]
        }
    }
    return result
}
```swift
// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Bool]()
    for number in numbers {
        if seen[number] == nil {
            result.append(number)
            seen[number] = true
        }
    }
    return result
}

// Given an array of integers, find the first missing positive integer in linear time and constant space.
// In other words, find the lowest positive integer that does not exist in the array.
// The array can contain duplicates and negative numbers as well.
// For example, the input [3, 4, -1, 1] should give 2. The input [1, 2, 0] should give 3.
// You can modify the input array in-place.
// findMissing(numbers: [3, 4, -1, 1]) == 2
// findMissing(numbers: [1, 2, 0]) == 3
func findMissing(numbers: [Int]) -> Int {
    var seen = [Int: Bool]()
    for number in numbers {
        seen[number] = true
    }
    for i in 1...numbers.count {
        if seen[i] == nil {
            return i
        }
    }
    return numbers.count + 1
}

// Given a string, find the length of the longest substring without repeating characters.
// For example, the longest substring without repeating letters for "abcabcbb" is "abc".
// For "bbbbb" the longest substring without repeating letters is "b".
// longestSubstring(string: "abcabcbb") == 3
// longestSubstring(string: "bbbbb") == 1
// longestSubstring(string: "pwwkew") == 3
func longestSubstring(string: String) -> Int {
    var seen = [Character: Int]()
    var result = 0
    var start = 0
    for (index, character) in string.enumerated() {
        if let lastIndex = seen[character] {
            if index - lastIndex > result {
                result = index - lastIndex
            }
            start = lastIndex + 1
        }
        seen[character] = index
    }
    return result
}

// Given an array of integers, find the pair of adjacent elements that has the largest product and return that product.
// For example, given the input [3, 6, -2, -5, 7, 3], the output should be 21.
// 7 and 3 produce the largest product.
// adjacentElementsProduct(numbers: [3, 6, -2, -5, 7, 3]) == 21
// adjacentElementsProduct(numbers: [3, 6, -2, -5, 7, 3]) == 21
func adjacentElementsProduct(numbers: [Int]) -> Int {
    var result = 0
    for i in 0..<numbers.count - 1 {
        if result < numbers[i] * numbers[i + 1] {
            result = numbers[i] * numbers[i + 1]
        }
    }
    return result
}

// Given an array of integers, find the pair of adjacent elements that has the largest sum and return that sum.
// For example, given the input [1, 2, 3, 4], the output should be 7.
// 1 and 2, 2 and 3, and 3 and 4 produce the largest sum.
// adjacentElementsSum(numbers: [1, 2, 3, 4]) == 7
// adjacentElementsSum(numbers: [1, 2, 3, 4]) == 7
func adjacentElementsSum(numbers: [Int]) -> Int {
    var result = 0
    for i in 0..<numbers.count - 1 {
        if result < numbers[i] + numbers[i + 1] {
            result = numbers[i] + numbers[i + 1]
        }
    }
    return result
}

// Given an array of integers, find the pair of adjacent elements that has the largest product and return that product.
// For example, given the input [3, 6, -2, -5, 7, 3], the output should be 21.
// 7 and 3 produce the largest product.
// adjacentElementsProduct(numbers: [3, 6, -2, -5, 7, 3]) == 21
var start = 0 // variable 'start' was written to, but never read
 // XCTAssertTrue failed

func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            seen[number] = 1
            result.append(number)
        } else {
            seen[number]! += 1
        }
    }
    return result
}

func findMaxProduct(numbers: [Int]) -> Int {
    var result = 0
    var max1 = 0
    var max2 = 0
    var max3 = 0
    for number in numbers {
        if number > max1 {
            max3 = max2
            max2 = max1
            max1 = number
        } else if number > max2 {
            max3 = max2
            max2 = number
        } else if number > max3 {
            max3 = number
        }
    }
    result = max1 * max2 * max3
    return result
}

func findMaxProduct2(numbers: [Int]) -> Int {
    var result = 0
    var max1 = 0
    var max2 = 0
    for number in numbers {
        if number > max1 {
            max2 = max1
            max1 = number
        } else if number > max2 {
            max2 = number
        }
    }
    result = max1 * max2
    return result
}

func findMaxProduct3(numbers: [Int]) -> Int {
    var result = 0
    var max1 = 0
    var max2 = 0
    var max3 = 0
    for number in numbers {
        if number > max1 {
            max3 = max2
            max2 = max1
            max1 = number
        } else if number > max2 {
            max3 = max2
            max2 = number
        } else if number > max3 {
            max3 = number
        }
    }
    result = max1 * max2 * max3
    return result
}

func findMaxProduct4(numbers: [Int]) -> Int {
    var result = 0
    var max1 = 0
    var max2 = 0
    for number in numbers {
        if number > max1 {
            max2 = max1
            max1 = number
        } else if number > max2 {
            max2 = number
        }
    }
    result = max1 * max2
    return result
}
```swift
// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            seen[number] = 1
            result.append(number)
        } else {
            seen[number]! += 1
        }
    }
    return result
}

// From an array of integers, find the largest product of 3.
// findMaxProduct(numbers: [1, 2, 3, 4]) == 24
// findMaxProduct(numbers: [1, 2, 3, 4, 5]) == 60
func findMaxProduct(numbers: [Int]) -> Int {
    var result = 0
    var max1 = 0
    var max2 = 0
    var max3 = 0
    for number in numbers {
        if number > max1 {
            max3 = max2
            max2 = max1
            max1 = number
        } else if number > max2 {
            max3 = max2
            max2 = number
        } else if number > max3 {
            max3 = number
        }
    }
    result = max1 * max2 * max3
    return result
}

// From an array of integers, find the largest product of 2.
// findMaxProduct(numbers: [1, 2, 3, 4]) == 8
// findMaxProduct(numbers: [1, 2, 3, 4, 5]) == 10
func findMaxProduct2(numbers: [Int]) -> Int {
    var result = 0
    var max1 = 0
    var max2 = 0
    for number in numbers {
        if number > max1 {
            max2 = max1
            max1 = number
        } else if number > max2 {
            max2 = number
        }
    }
    result = max1 * max2
    return result
}

// From an array of integers, find the largest product of 3.
// findMaxProduct(numbers: [1, 2, 3, 4]) == 24
// findMaxProduct(numbers: [1, 2, 3, 4, 5]) == 60
func findMaxProduct3(numbers: [Int]) -> Int {
    var result = 0
    var max1 = 0
    var max2 = 0
    var max3 = 0
    for number in numbers {
        if number > max1 {
            max3 = max2
            max2 = max1
            max1 = number
        } else if number > max2 {
            max3 = max2
            max2 = number
        } else if number > max3 {
            max3 = number
        }
    }
    result = max1 * max2 * max3
    return result
}

// From an array of integers, find the largest product of 2.
// findMaxProduct(numbers: [1, 2, 3, 4]) == 8
// findMaxProduct(numbers: [1, 2, 3, 4, 5]) == 10
func findMaxProduct4(numbers: [Int]) -> Int {
    var result = 0
    var max1 = 0
    var max2 = 0
    for number in numbers {
        if number > max1 {
            max2 = max1
            max1 = number
        } else if number > max2 {
            max2 = number
        }
    }
    result = max1 * max2
    return result
}

// From an array of integers, find the largest product of 3.
// findMaxProduct(numbers: [1, 2, 3, 4]) == 24
// findMaxProduct(numbers: [1, 2, 3, 4, 5]) == 60
func findMaxProduct5(numbers: [Int]) -> Int {
    var result = 0
    var max1 = 0
    var max2 = 0
    var max3 = 0
    for number in numbers {
        if number > max1 {
            max3 = max2
            max2 = max1
            max1 = number
        } else if number > max2 {
            max3 = max2
            max2 = number
        } else if number > max3 {
            max3 = number
 // XCTAssertTrue failed

func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            seen[number] = 1
            result.append(number)
        } else {
            seen[number]! += 1
        }
    }
    return result
}

func removeDuplicates2(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            seen[number] = 1
            result.append(number)
        } else {
            seen[number]! += 1
        }
    }
    return result
}

func removeDuplicates3(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            seen[number] = 1
            result.append(number)
        } else {
            seen[number]! += 1
        }
    }
    return result
}

func removeDuplicates4(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            seen[number] = 1
            result.append(number)
        } else {
            seen[number]! += 1
        }
    }
    return result
}

func removeDuplicates5(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            seen[number] = 1
            result.append(number)
        } else {
            seen[number]! += 1
        }
    }
    return result
}

func removeDuplicates6(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            seen[number] = 1
            result.append(number)
        } else {
            seen[number]! += 1
        }
    }
    return result
}

func removeDuplicates7(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            seen[number] = 1
            result.append(number)
        } else {
            seen[number]! += 1
        }
    }
    return result
}
```swift
// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            seen[number] = 1
            result.append(number)
        } else {
            seen[number]! += 1
        }
    }
    return result
}

// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates2(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            seen[number] = 1
            result.append(number)
        } else {
            seen[number]! += 1
        }
    }
    return result
}

// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates3(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            seen[number] = 1
            result.append(number)
        } else {
            seen[number]! += 1
        }
    }
    return result
}

// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates4(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            seen[number] = 1
            result.append(number)
        } else {
            seen[number]! += 1
        }
    }
    return result
}

// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates5(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            seen[number] = 1
            result.append(number)
        } else {
            seen[number]! += 1
        }
    }
    return result
}

// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates6(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            seen[number] = 1
            result.append(number)
        } else {
            seen[number]! += 1
        }
    }
    return result
}

// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates7(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            seen[number] = 1
            result.append(number)
        } else {
            seen[number]! += 1
        }
    }
    return result
}

// From an
 // XCTAssertTrue failed

func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = Set<Int>()
    for number in numbers {
        if seen.contains(number) {
            continue
        }
        seen.insert(number)
        result.append(number)
    }
    return result
}
```swift
// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = Set<Int>()
    for number in numbers {
        if seen.contains(number) {
            continue
        }
        seen.insert(number)
        result.append(number)
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Bool]()
    for number in numbers {
        if seen[number] == nil {
            result.append(number)
            seen[number] = true
        }
    }
    return result
}
```swift
// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Bool]()
    for number in numbers {
        if seen[number] == nil {
            result.append(number)
            seen[number] = true
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Bool]()
    for number in numbers {
        if seen[number] == nil {
            result.append(number)
            seen[number] = true
        }
    }
    return result
}
```swift
// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Bool]()
    for number in numbers {
        if seen[number] == nil {
            result.append(number)
            seen[number] = true
        }
    }
    return result
}

// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Bool]()
    for number in numbers {
        if seen[number] == nil {
            result.append(number)
            seen[number] = true
        }
    }
    return result
}

// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Bool]()
    for number in numbers {
        if seen[number] == nil {
            result.append(number)
            seen[number] = true
        }
    }
    return result
}

// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Bool]()
    for number in numbers {
        if seen[number] == nil {
            result.append(number)
            seen[number] = true
        }
    }
    return result
}

// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Bool]()
    for number in numbers {
        if seen[number] == nil {
            result.append(number)
            seen[number] = true
        }
    }
    return result
}

// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Bool]()
    for number in numbers {
        if seen[number] == nil {
            result.append(number)
            seen[number] = true
        }
    }
    return result
}

// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Bool]()
    for number in numbers {
        if seen[number] == nil {
            result.append(number)
            seen[number] = true
        }
    }
    return result
}

// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Bool]()
    for number in numbers {
        if seen[number] == nil {
            
 // XCTAssertTrue failed

func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var set = Set<Int>()
    for number in numbers {
        if !set.contains(number) {
            result.append(number)
            set.insert(number)
        }
    }
    return result
}

func findFirstMissingPositive(numbers: [Int]) -> Int {
    var numbers = numbers
    let min = numbers.min()!
    let max = numbers.max()!
    for i in min...max {
        if !numbers.contains(i) {
            return i
        }
    }
    return max + 1
}

func adjacentElementsProduct(numbers: [Int]) -> Int {
    var result = 0
    for i in 0..<numbers.count - 1 {
        let product = numbers[i] * numbers[i + 1]
        if product > result {
            result = product
        }
    }
    return result
}

func adjacentElementsProduct2(numbers: [Int]) -> Int {
    var result = 0
    for i in 0..<numbers.count - 1 {
        let product = numbers[i] * numbers[i + 1]
        if product > result {
            result = product
        }
    }
    return result
}

func adjacentElementsProduct3(numbers: [Int]) -> Int {
    var result = 0
    for i in 0..<numbers.count - 1 {
        let product = numbers[i] * numbers[i + 1]
        if product > result {
            result = product
        }
    }
    return result
}

func adjacentElementsProduct4(numbers: [Int]) -> Int {
    var result = 0
    for i in 0..<numbers.count - 1 {
        let product = numbers[i] * numbers[i + 1]
        if product > result {
            result = product
        }
    }
    return result
}
```swift
// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var set = Set<Int>()
    for number in numbers {
        if !set.contains(number) {
            result.append(number)
            set.insert(number)
        }
    }
    return result
}

// Given an array of integers, find the first missing positive integer in linear time and constant space.
// In other words, find the lowest positive integer that does not exist in the array.
// The array can contain duplicates and negative numbers as well.
// For example, the input [3, 4, -1, 1] should give 2. The input [1, 2, 0] should give 3.
// You can modify the input array in-place.
// findFirstMissingPositive(numbers: [3, 4, -1, 1]) == 2
// findFirstMissingPositive(numbers: [1, 2, 0]) == 3
func findFirstMissingPositive(numbers: [Int]) -> Int {
    var numbers = numbers
    let min = numbers.min()!
    let max = numbers.max()!
    for i in min...max {
        if !numbers.contains(i) {
            return i
        }
    }
    return max + 1
}

// Given an array of integers, find the pair of adjacent elements that has the largest product and return that product.
// For example, given the input [3, 6, -2, -5, 7, 3], the output should be 21.
// 7 and 3 produce the largest product.
// adjacentElementsProduct(numbers: [3, 6, -2, -5, 7, 3]) == 21
func adjacentElementsProduct(numbers: [Int]) -> Int {
    var result = 0
    for i in 0..<numbers.count - 1 {
        let product = numbers[i] * numbers[i + 1]
        if product > result {
            result = product
        }
    }
    return result
}

// Given an array of integers, find the pair of adjacent elements that has the largest product and return that product.
// For example, given the input [3, 6, -2, -5, 7, 3], the output should be 21.
// 7 and 3 produce the largest product.
// adjacentElementsProduct(numbers: [3, 6, -2, -5, 7, 3]) == 21
func adjacentElementsProduct2(numbers: [Int]) -> Int {
    var result = 0
    for i in 0..<numbers.count - 1 {
        let product = numbers[i] * numbers[i + 1]
        if product > result {
            result = product
        }
    }
    return result
}

// Given an array of integers, find the pair of adjacent elements that has the largest product and return that product.
// For example, given the input [3, 6, -2, -5, 7, 3], the output should be 21.
// 7 and 3 produce the largest product.
// adjacentElementsProduct(numbers: [3, 6, -2, -5, 7, 3]) == 21
func adjacentElementsProduct3(numbers: [Int]) -> Int {
    var result = 0
    for i in 0..<numbers.count - 1 {
        let product = numbers[i] * numbers[i + 1]
        if product > result {
            result = product
        }
    }
    return result
}

// Given an array of integers, find the pair of adjacent elements that has the largest product and return that product.
// For example, given the input [3, 6, -2, -5, 7, 3], the output should be 21.
// 7 and 3 produce the largest product.
// adjacentElementsProduct(numbers: [3, 6, -2, -5, 7, 3]) == 21
func adjacentElementsProduct4(numbers: [Int]) -> Int {
    var result = 0
    for i in 0..<numbers.count - 1 {
        let product = numbers[i] * numbers[i + 1]
        if product > result {
            result = product
        }
    }
    return result
}

// Given an array of integers, find the pair of adjacent elements that has the largest product and
var numbers = numbers // variable 'numbers' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Bool]()
    for number in numbers {
        if seen[number] == nil {
            result.append(number)
            seen[number] = true
        }
    }
    return result
}

func maxProduct(numbers: [Int]) -> Int {
    var max = 0
    for i in 0..<numbers.count {
        for j in i+1..<numbers.count {
            let product = numbers[i] * numbers[j]
            if product > max {
                max = product
            }
        }
    }
    return max
}
```swift
// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Bool]()
    for number in numbers {
        if seen[number] == nil {
            result.append(number)
            seen[number] = true
        }
    }
    return result
}

// Given an array of integers, find the maximum product of two integers.
// maxProduct(numbers: [1, 2, 3, 4]) == 12
func maxProduct(numbers: [Int]) -> Int {
    var max = 0
    for i in 0..<numbers.count {
        for j in i+1..<numbers.count {
            let product = numbers[i] * numbers[j]
            if product > max {
                max = product
            }
        }
    }
    return max
}

// Given an array of integers, find the maximum product of two integers.
// maxProduct(numbers: [1, 2, 3, 4]) == 12
func maxProduct(numbers: [Int]) -> Int {
    var max = 0
    for i in 0..<numbers.count {
        for j in i+1..<numbers.count {
            let product = numbers[i] * numbers[j]
            if product > max {
                max = product
            }
        }
    }
    return max
}

// Given an array of integers, find the maximum product of two integers.
// maxProduct(numbers: [1, 2, 3, 4]) == 12
func maxProduct(numbers: [Int]) -> Int {
    var max = 0
    for i in 0..<numbers.count {
        for j in i+1..<numbers.count {
            let product = numbers[i] * numbers[j]
            if product > max {
                max = product
            }
        }
    }
    return max
}

// Given an array of integers, find the maximum product of two integers.
// maxProduct(numbers: [1, 2, 3, 4]) == 12
func maxProduct(numbers: [Int]) -> Int {
    var max = 0
    for i in 0..<numbers.count {
        for j in i+1..<numbers.count {
            let product = numbers[i] * numbers[j]
            if product > max {
                max = product
            }
        }
    }
    return max
}

// Given an array of integers, find the maximum product of two integers.
// maxProduct(numbers: [1, 2, 3, 4]) == 12
func maxProduct(numbers: [Int]) -> Int {
    var max = 0
    for i in 0..<numbers.count {
        for j in i+1..<numbers.count {
            let product = numbers[i] * numbers[j]
            if product > max {
                max = product
            }
        }
    }
    return max
}

// Given an array of integers, find the maximum product of two integers.
// maxProduct(numbers: [1, 2, 3, 4]) == 12
func maxProduct(numbers: [Int]) -> Int {
    var max = 0
    for i in 0..<numbers.count {
        for j in i+1..<numbers.count {
            let product = numbers[i] * numbers[j]
            if product > max {
                max = product
            }
        }
    }
    return max
}

// Given an array of integers, find the maximum product of two integers.
// maxProduct(numbers: [1, 2, 3, 4]) == 12
func maxProduct(numbers: [Int]) -> Int {
    var max = 0
    for i in 0..<numbers.count {
        for j in i+1..<numbers.count {
            let product = numbers[i] * numbers[j]
            if product > max {
                max = product
            }
        }
    }
    return max
}

// Given an array of integers, find the maximum product of two integers.
// maxProduct(numbers: [1, 2, 3, 4]) == 12
func maxProduct(numbers: [Int]) -> Int {
    var max = 0
    for i in 0..<numbers.count {
        for j in i+1..<numbers.count {
            
 // XCTAssertTrue failed

func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            result.append(number)
            seen[number] = 1
        } else {
            seen[number]! += 1
        }
    }
    return result
}
```swift
// From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// removeDuplicates(numbers: [1, 2, 3, 2, 4]) == [1, 3, 4]
func removeDuplicates(numbers: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Int]()
    for number in numbers {
        if seen[number] == nil {
            result.append(number)
            seen[number] = 1
        } else {
            seen[number]! += 1
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isUppercase {
            result += String(char.lowercased())
        } else {
            result += String(char.uppercased())
        }
    }
    return result
}
```swift
// For a given string, flip lowercase characters to uppercase and uppercase to lowercase.
// flipCase(string: "Hello") == "hELLO"
func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isUppercase {
            result += String(char.lowercased())
        } else {
            result += String(char.uppercased())
        }
    }
    return result
}
<|file_separator|>

func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isLowercase {
            result += String(char.uppercased())
        } else if char.isUppercase {
            result += String(char.lowercased())
        } else {
            result += String(char)
        }
    }
    return result
}
```swift
// For a given string, flip lowercase characters to uppercase and uppercase to lowercase.
// flipCase(string: "Hello") == "hELLO"
func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isLowercase {
            result += String(char.uppercased())
        } else if char.isUppercase {
            result += String(char.lowercased())
        } else {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>

func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isLowercase {
            result += String(char.uppercased())
        } else if char.isUppercase {
            result += String(char.lowercased())
        } else {
            result += String(char)
        }
    }
    return result
}
```swift
// For a given string, flip lowercase characters to uppercase and uppercase to lowercase.
// flipCase(string: "Hello") == "hELLO"
func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isLowercase {
            result += String(char.uppercased())
        } else if char.isUppercase {
            result += String(char.lowercased())
        } else {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>

func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isUppercase {
            result += String(char.lowercased())
        } else if char.isLowercase {
            result += String(char.uppercased())
        } else {
            result += String(char)
        }
    }
    return result
}
```swift
// For a given string, flip lowercase characters to uppercase and uppercase to lowercase.
// flipCase(string: "Hello") == "hELLO"
func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isUppercase {
            result += String(char.lowercased())
        } else if char.isLowercase {
            result += String(char.uppercased())
        } else {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>

func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isUppercase {
            result += String(char.lowercased())
        } else {
            result += String(char.uppercased())
        }
    }
    return result
}

func countA(string: String) -> Int {
    var count = 0
    for char in string {
        if char == "a" {
            count += 1
        }
    }
    return count
}

func countB(string: String) -> Int {
    var count = 0
    for char in string {
        if char == "b" {
            count += 1
        }
    }
    return count
}

func countC(string: String) -> Int {
    var count = 0
    for char in string {
        if char == "c" {
            count += 1
        }
    }
    return count
}

func countD(string: String) -> Int {
    var count = 0
    for char in string {
        if char == "d" {
            count += 1
        }
    }
    return count
}

func countE(string: String) -> Int {
    var count = 0
    for char in string {
        if char == "e" {
            count += 1
        }
    }
    return count
}

func countF(string: String) -> Int {
    var count = 0
    for char in string {
        if char == "f" {
            count += 1
        }
    }
    return count
}

func countG(string: String) -> Int {
    var count = 0
    for char in string {
        if char == "g" {
            count += 1
        }
    }
    return count
}

func countH(string: String) -> Int {
    var count = 0
    for char in string {
        if char == "h" {
            count += 1
        }
    }
    return count
}

func countI(string: String) -> Int {
    var count = 0
    for char in string {
        if char == "i" {
            count += 1
        }
    }
    return count
}
```swift
// For a given string, flip lowercase characters to uppercase and uppercase to lowercase.
// flipCase(string: "Hello") == "hELLO"
func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isUppercase {
            result += String(char.lowercased())
        } else {
            result += String(char.uppercased())
        }
    }
    return result
}

// For a given string, return the number of times "a" appears in the string.
// countA("Hello") == 1
// countA("Hello, my name is John") == 2
func countA(string: String) -> Int {
    var count = 0
    for char in string {
        if char == "a" {
            count += 1
        }
    }
    return count
}

// For a given string, return the number of times "b" appears in the string.
// countB("Hello") == 0
// countB("Hello, my name is William") == 1
func countB(string: String) -> Int {
    var count = 0
    for char in string {
        if char == "b" {
            count += 1
        }
    }
    return count
}

// For a given string, return the number of times "c" appears in the string.
// countC("Hello") == 0
// countC("Hello, my name is John") == 1
func countC(string: String) -> Int {
    var count = 0
    for char in string {
        if char == "c" {
            count += 1
        }
    }
    return count
}

// For a given string, return the number of times "d" appears in the string.
// countD("Hello") == 0
// countD("Hello, my name is William") == 1
func countD(string: String) -> Int {
    var count = 0
    for char in string {
        if char == "d" {
            count += 1
        }
    }
    return count
}

// For a given string, return the number of times "e" appears in the string.
// countE("Hello") == 1
// countE("Hello, my name is John") == 2
func countE(string: String) -> Int {
    var count = 0
    for char in string {
        if char == "e" {
            count += 1
        }
    }
    return count
}

// For a given string, return the number of times "f" appears in the string.
// countF("Hello") == 0
// countF("Hello, my name is John") == 1
func countF(string: String) -> Int {
    var count = 0
    for char in string {
        if char == "f" {
            count += 1
        }
    }
    return count
}

// For a given string, return the number of times "g" appears in the string.
// countG("Hello") == 0
// countG("Hello, my name is John") == 1
func countG(string: String) -> Int {
    var count = 0
    for char in string {
        if char == "g" {
            count += 1
        }
    }
    return count
}

// For a given string, return the number of times "h" appears in the string.
// countH("Hello") == 1
// countH("Hello, my name is John") == 2
func countH(string: String) -> Int {
    var count = 0
    for char in string {
        if char == "h" {
            count += 1
        }
    }
    return count
}

// For a given string, return the number of times "i" appears in the string.
// countI("Hello") == 1
// countI("Hello, my name is John") == 2
func countI(string: String) -> Int {
    var count = 0
    for char in string {
        if char == "i" {
            count += 1
        }
    }
    return count
}

// For a given string, return the number of times "j" appears in the string.
// countJ("Hello") == 0
// countJ("Hello, my name is John") == 1
func countJ(string: String) -> Int {
    var count = 0
    for char in string {
        if char == "j" {

func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isUppercase {
            result += String(char.lowercased())
        } else {
            result += String(char.uppercased())
        }
    }
    return result
}
```swift
// For a given string, flip lowercase characters to uppercase and uppercase to lowercase.
// flipCase(string: "Hello") == "hELLO"
func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isUppercase {
            result += String(char.lowercased())
        } else {
            result += String(char.uppercased())
        }
    }
    return result
}
<|file_separator|>

func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isLowercase {
            result += String(char).uppercased()
        } else {
            result += String(char).lowercased()
        }
    }
    return result
}
```swift
// For a given string, flip lowercase characters to uppercase and uppercase to lowercase.
// flipCase(string: "Hello") == "hELLO"
func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isLowercase {
            result += String(char).uppercased()
        } else {
            result += String(char).lowercased()
        }
    }
    return result
}
<|file_separator|>

func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isUppercase {
            result += String(char.lowercased())
        } else {
            result += String(char.uppercased())
        }
    }
    return result
}
```swift
// For a given string, flip lowercase characters to uppercase and uppercase to lowercase.
// flipCase(string: "Hello") == "hELLO"
func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isUppercase {
            result += String(char.lowercased())
        } else {
            result += String(char.uppercased())
        }
    }
    return result
}
<|file_separator|>

func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isLowercase {
            result += String(char.uppercased())
        } else if char.isUppercase {
            result += String(char.lowercased())
        } else {
            result += String(char)
        }
    }
    return result
}
```swift
// For a given string, flip lowercase characters to uppercase and uppercase to lowercase.
// flipCase(string: "Hello") == "hELLO"
func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isLowercase {
            result += String(char.uppercased())
        } else if char.isUppercase {
            result += String(char.lowercased())
        } else {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>

func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isUppercase {
            result += String(char.lowercased())
        } else {
            result += String(char.uppercased())
        }
    }
    return result
}
```swift
// For a given string, flip lowercase characters to uppercase and uppercase to lowercase.
// flipCase(string: "Hello") == "hELLO"
func flipCase(string: String) -> String {
    var result = ""
    for char in string {
        if char.isUppercase {
            result += String(char.lowercased())
        } else {
            result += String(char.uppercased())
        }
    }
    return result
}
<|file_separator|>

func concatenate(strings: [String]) -> String {
    var result = ""
    for string in strings {
        result += string
    }
    return result
}
```swift
// Concatenate array of strings into a single string
// concatenate(strings: [] as [String]) == ""
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    var result = ""
    for string in strings {
        result += string
    }
    return result
}
<|file_separator|>

func concatenate(strings: [String]) -> String {
    return strings.joined()
}
```swift
// Concatenate array of strings into a single string
// concatenate(strings: [] as [String]) == ""
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    return strings.joined()
}
<|file_separator|>

func concatenate(strings: [String]) -> String {
    var result = ""
    for string in strings {
        result += string
    }
    return result
}

func concatenate(strings: [String]) -> String {
    return strings.joined()
}

func concatenate(strings: [String]) -> String {
    return strings.reduce("") { $0 + $1 }
}
```swift
// Concatenate array of strings into a single string
// concatenate(strings: [] as [String]) == ""
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    var result = ""
    for string in strings {
        result += string
    }
    return result
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    return strings.joined()
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    return strings.reduce("") { $0 + $1 }
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    return strings.reduce("") { $0 + $1 }
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    return strings.reduce("") { $0 + $1 }
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    return strings.reduce("") { $0 + $1 }
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    return strings.reduce("") { $0 + $1 }
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    return strings.reduce("") { $0 + $1 }
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    return strings.reduce("") { $0 + $1 }
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    return strings.reduce("") { $0 + $1 }
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    return strings.reduce("") { $0 + $1 }
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    return strings.reduce("") { $0 + $1 }
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    return strings.reduce("") { $0 + $1 }
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    return strings.reduce("") { $0 + $1 }
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    return strings.reduce("") { $0 + $1 }
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    return strings.reduce("") { $0 + $1 }
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    return strings.reduce("") { $0 + $1 }
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    return strings.reduce("") { $0 + $1 }
}

func concatenate(strings: [String]) -> String { // invalid redeclaration of 'concatenate(strings:)'
func concatenate(strings: [String]) -> String { // invalid redeclaration of 'concatenate(strings:)'

func concatenate(strings: [String]) -> String {
    var result = ""
    for string in strings {
        result += string
    }
    return result
}
```swift
// Concatenate array of strings into a single string
// concatenate(strings: [] as [String]) == ""
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    var result = ""
    for string in strings {
        result += string
    }
    return result
}
<|file_separator|>

func concatenate(strings: [String]) -> String {
  return strings.reduce("", { $0 + $1 })
}
```swift
// Concatenate array of strings into a single string
// concatenate(strings: [] as [String]) == ""
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  return strings.reduce("", { $0 + $1 })
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  return strings.reduce("", { $0 + $1 })
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  return strings.reduce("", { $0 + $1 })
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  return strings.reduce("", { $0 + $1 })
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  return strings.reduce("", { $0 + $1 })
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  return strings.reduce("", { $0 + $1 })
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  return strings.reduce("", { $0 + $1 })
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  return strings.reduce("", { $0 + $1 })
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  return strings.reduce("", { $0 + $1 })
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  return strings.reduce("", { $0 + $1 })
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  return strings.reduce("", { $0 + $1 })
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  return strings.reduce("", { $0 + $1 })
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  return strings.reduce("", { $0 + $1 })
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  return strings.reduce("", { $0 + $1 })
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  return strings.reduce("", { $0 + $1 })
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  return strings.reduce("", { $0 + $1 })
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  return strings.reduce("", { $0 + $1 })
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  return strings.reduce("", { $0 + $1 })
}

// Concatenate

func concatenate(strings: [String]) -> String {
  var result = ""
  for string in strings {
    result += string
  }
  return result
}
```swift
// Concatenate array of strings into a single string
// concatenate(strings: [] as [String]) == ""
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  var result = ""
  for string in strings {
    result += string
  }
  return result
}
<|file_separator|>

func concatenate(strings: [String]) -> String {
  var result = ""
  for string in strings {
    result += string
  }
  return result
}
```swift
// Concatenate array of strings into a single string
// concatenate(strings: [] as [String]) == ""
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  var result = ""
  for string in strings {
    result += string
  }
  return result
}
<|file_separator|>

func concatenate(strings: [String]) -> String {
  var result = ""
  for string in strings {
    result += string
  }
  return result
}

func concatenate(integers: [Int]) -> Int {
  var result = 0
  for integer in integers {
    result = result * 10 + integer
  }
  return result
}

func concatenate(doubles: [Double]) -> Double {
  var result = 0.0
  for double in doubles {
    result = result * 10 + double
  }
  return result
}

func concatenate(booleans: [Bool]) -> Bool {
  var result = false
  for boolean in booleans {
    result = result || boolean
  }
  return result
}

func concatenate(characters: [Character]) -> String {
  var result = ""
  for character in characters {
    result += String(character)
  }
  return result
}
```swift
// Concatenate array of strings into a single string
// concatenate(strings: [] as [String]) == ""
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  var result = ""
  for string in strings {
    result += string
  }
  return result
}

// Concatenate array of integers into a single integer
// concatenate(integers: [] as [Int]) == 0
// concatenate(integers: [1, 2, 3]) == 123
func concatenate(integers: [Int]) -> Int {
  var result = 0
  for integer in integers {
    result = result * 10 + integer
  }
  return result
}

// Concatenate array of doubles into a single double
// concatenate(doubles: [] as [Double]) == 0.0
// concatenate(doubles: [1.1, 2.2, 3.3]) == 1.12233
func concatenate(doubles: [Double]) -> Double {
  var result = 0.0
  for double in doubles {
    result = result * 10 + double
  }
  return result
}

// Concatenate array of booleans into a single boolean
// concatenate(booleans: [] as [Bool]) == false
// concatenate(booleans: [true, false, true]) == true
func concatenate(booleans: [Bool]) -> Bool {
  var result = false
  for boolean in booleans {
    result = result || boolean
  }
  return result
}

// Concatenate array of characters into a single character
// concatenate(characters: [] as [Character]) == ""
// concatenate(characters: ["a", "b", "c"]) == "abc"
func concatenate(characters: [Character]) -> String {
  var result = ""
  for character in characters {
    result += String(character)
  }
  return result
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c"]) == "abc"
// concatenate(strings: ["a", "b", "c", "d", "e", "f"]) == "abcdef"
func concatenate(strings: [String]) -> String {
  var result = ""
  for string in strings {
    result += string
  }
  return result
}

// Concatenate array of integers into a single integer
// concatenate(integers: [1, 2, 3]) == 123
// concatenate(integers: [1, 2, 3, 4, 5, 6]) == 123456
func concatenate(integers: [Int]) -> Int {
  var result = 0
  for integer in integers {
    result = result * 10 + integer
  }
  return result
}

// Concatenate array of doubles into a single double
// concatenate(doubles: [1.1, 2.2, 3.3]) == 1.12233
// concatenate(doubles: [1.1, 2.2, 3.3, 4.4, 5.5, 6.6]) == 1.12233445566
func concatenate(doubles: [Double]) -> Double {
  var result = 0.0
  for double in doubles {
    result = result * 10 + double
  }
  return result
}

// Concatenate array of booleans into a single boolean
// concatenate(booleans: [true, false, true]) == true
// concatenate(booleans: [true, false, true, false, true, false]) == true
func concatenate(booleans: [Bool]) -> Bool {
  var result = false
  for boolean in booleans {
    result = result || boolean
  }
  return result
}

// Concatenate array of characters into a single character
// concatenate(characters: ["a", "b", "c"]) == "abc"
// concatenate(characters: ["a", "b", "c", "d", "e", "f"]) == "abcde"
func concatenate(characters: [Character]) -> String {
  var result = ""
  for character in characters {
    result += String(character)
  }
  return result
}

// Concatenate array of strings into a single string
// concatenate(strings: ["a", "b", "c", "d", "e", "f"]) == "abcdef"
// concatenate(strings: ["a", "b", "c", "d", "e", "f", "g"]) == "abcdefg"
func concatenate(strings: [String]) ->

func concatenate(strings: [String]) -> String {
  var result = ""
  for string in strings {
    result += string
  }
  return result
}
```swift
// Concatenate array of strings into a single string
// concatenate(strings: [] as [String]) == ""
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
  var result = ""
  for string in strings {
    result += string
  }
  return result
}
<|file_separator|>

func concatenate(strings: [String]) -> String {
    var result = ""
    for string in strings {
        result += string
    }
    return result
}
```swift
// Concatenate array of strings into a single string
// concatenate(strings: [] as [String]) == ""
// concatenate(strings: ["a", "b", "c"]) == "abc"
func concatenate(strings: [String]) -> String {
    var result = ""
    for string in strings {
        result += string
    }
    return result
}
<|file_separator|>

func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}
```swift
// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }

func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}
```swift
// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }

func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}
```swift
// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}
<|file_separator|>

func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}
```swift
// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }

func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}
```swift
// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }

func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}
```swift
// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
  return strings.filter { $0.hasPrefix(prefix) }
}
<|file_separator|>

func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}
```swift
// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}
<|file_separator|>

func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}
```swift
// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}
<|file_separator|>

func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}
```swift
// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }

func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}
```swift
// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }
}

// Filter an input array of strings only for ones that start with a given prefix.
// filterByPrefix(strings: [] as [String], prefix: "a") == [] as [String]
// filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a") == ["abc", "array"]
func filterByPrefix(strings: [String], prefix: String) -> [String] {
    return strings.filter { $0.hasPrefix(prefix) }

func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}
```swift
// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2,

func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

func getSum(l: [Int]) -> Int {
    return l.reduce(0) { $0 + $1 }
}

func getSum2(l: [Int]) -> Int {
    return l.dropFirst().dropLast().reduce(0) { $0 + $1 }
}

func getSum3(l: [Int]) -> Int {
    return l.dropFirst().dropLast().reduce(0) { $0 + $1 } * 2
}

func getSum4(l: [Int]) -> Int {
    return l.reduce(0) { $0 + $1 } * 2
}

func getSum5(l: [Int]) -> Int {
    return l.reduce(0) { $0 + $1 } * 2
}

func getSum6(l: [Int]) -> Int {
    return l.reduce(0) { $0 + $1 } * 2
}

func getSum7(l: [Int]) -> Int {
    return l.reduce(0) { $0 + $1 } * 2
}
```swift
// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return the sum of all numbers in the array.
// getSum(l: [-1, 2, -4, 5, 6]) == 11
// getSum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 154
func getSum(l: [Int]) -> Int {
    return l.reduce(0) { $0 + $1 }
}

// Return the sum of all numbers in the array, except for the first and last numbers.
// getSum(l: [-1, 2, -4, 5, 6]) == 10
// getSum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 142
func getSum2(l: [Int]) -> Int {
    return l.dropFirst().dropLast().reduce(0) { $0 + $1 }
}

// Return the sum of all numbers in the array, except for the first and last numbers, and multiply the result by 2.
// getSum(l: [-1, 2, -4, 5, 6]) == 20
// getSum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 284
func getSum3(l: [Int]) -> Int {
    return l.dropFirst().dropLast().reduce(0) { $0 + $1 } * 2
}

// Return the sum of all numbers in the array, except for the first and last numbers, and multiply the result by 2.
// getSum(l: [-1, 2, -4, 5, 6]) == 20
// getSum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 284
func getSum4(l: [Int]) -> Int {
    return l.reduce(0) { $0 + $1 } * 2
}

// Return the sum of all numbers in the array, except for the first and last numbers, and multiply the result by 2.
// getSum(l: [-1, 2, -4, 5, 6]) == 20
// getSum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 284
func getSum5(l: [Int]) -> Int {
    return l.reduce(0) { $0 + $1 } * 2
}

// Return the sum of all numbers in the array, except for the first and last numbers, and multiply the result by 2.
// getSum(l: [-1, 2, -4, 5, 6]) == 20
// getSum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 284
func getSum6(l: [Int]) -> Int {
    return l.reduce(0) { $0 + $1 } * 2
}

// Return the sum of all numbers in the array, except for the first and last numbers, and multiply the result by 2.
// getSum(l: [-1, 2, -4, 5, 6]) == 20
// getSum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 284
func getSum7(l: [Int]) -> Int {
    return l.reduce(0) { $0 + $1 } * 2
}

// Return the sum of all numbers in the array, except for the first and last numbers, and multiply the result by 2.
// getSum(l: [-1, 2, -4, 5, 6]) == 20
// getSum(l: [5, 3, -5

func getPositive(l: [Int]) -> [Int] {
  return l.filter { $0 > 0 }
}
```swift
// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
  return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
  return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
  return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
  return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
  return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
  return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
  return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
  return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2,

func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}
```swift
// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2,

func getPositive(l: [Int]) -> [Int] {
  return l.filter { $0 > 0 }
}

func getSum(l: [Int]) -> Int {
  return l.reduce(0, +)
}

func getSum(l: [Int]) -> Int {
  return l.reduce(0) { $0 + $1 } - l[0] - l.last!
}
```swift
// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
  return l.filter { $0 > 0 }
}

// Return the sum of all the numbers in the array.
// getSum(l: [1, 2, 3, 4, 5]) == 15
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 55
func getSum(l: [Int]) -> Int {
  return l.reduce(0, +)
}

// Return the sum of all the numbers in the array, except for the first and last elements,
// which must not be removed.
// getSum(l: [1, 2, 3, 4, 5]) == 10
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 44
func getSum(l: [Int]) -> Int {
  return l.reduce(0) { $0 + $1 } - l[0] - l.last!
}

// Return the sum of all the numbers in the array, except for the first and last elements,
// which must not be removed, and return 0 if the array is empty.
// getSum(l: [1, 2, 3, 4, 5]) == 10
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 44
// getSum(l: []) == 0
func getSum(l: [Int]) -> Int {
  return l.reduce(0) { $0 + $1 } - l[0] - l.last!
}

// Return the sum of all the numbers in the array, except for the first and last elements,
// which must not be removed, and return 0 if the array is empty.
// getSum(l: [1, 2, 3, 4, 5]) == 10
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 44
// getSum(l: []) == 0
func getSum(l: [Int]) -> Int {
  return l.reduce(0) { $0 + $1 } - l[0] - l.last!
}

// Return the sum of all the numbers in the array, except for the first and last elements,
// which must not be removed, and return 0 if the array is empty.
// getSum(l: [1, 2, 3, 4, 5]) == 10
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 44
// getSum(l: []) == 0
func getSum(l: [Int]) -> Int {
  return l.reduce(0) { $0 + $1 } - l[0] - l.last!
}

// Return the sum of all the numbers in the array, except for the first and last elements,
// which must not be removed, and return 0 if the array is empty.
// getSum(l: [1, 2, 3, 4, 5]) == 10
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 44
// getSum(l: []) == 0
func getSum(l: [Int]) -> Int {
  return l.reduce(0) { $0 + $1 } - l[0] - l.last!
}

// Return the sum of all the numbers in the array, except for the first and last elements,
// which must not be removed, and return 0 if the array is empty.
// getSum(l: [1, 2, 3, 4, 5]) == 10
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 44
// getSum(l: []) == 0
func getSum(l: [Int])
func getSum(l: [Int]) -> Int { // invalid redeclaration of 'getSum(l:)'

func getPositive(l: [Int]) -> [Int] {
    var positive: [Int] = []
    for i in l {
        if i > 0 {
            positive.append(i)
        }
    }
    return positive
}

func getSum(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    return sum
}

func getSum(l: [Int], min: Int, max: Int) -> Int {
    var sum = 0
    for i in l {
        if i > min && i < max {
            sum += i
        }
    }
    return sum
}
```swift
// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    var positive: [Int] = []
    for i in l {
        if i > 0 {
            positive.append(i)
        }
    }
    return positive
}

// Return the sum of all the numbers in the array.
// getSum(l: [1, 2, 3, 4, 5]) == 15
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 55
func getSum(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    return sum
}

// Return the sum of all the numbers in the array, but exclude any number that is within the range of min and max.
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], min: 3, max: 7) == 22
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], min: 5, max: 8) == 33
func getSum(l: [Int], min: Int, max: Int) -> Int {
    var sum = 0
    for i in l {
        if i > min && i < max {
            sum += i
        }
    }
    return sum
}

// Return the sum of all the numbers in the array, but exclude any number that is within the range of min and max.
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], min: 3, max: 7) == 22
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], min: 5, max: 8) == 33
func getSum(l: [Int], min: Int, max: Int) -> Int {
    var sum = 0
    for i in l {
        if i > min && i < max {
            sum += i
        }
    }
    return sum
}

// Return the sum of all the numbers in the array, but exclude any number that is within the range of min and max.
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], min: 3, max: 7) == 22
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], min: 5, max: 8) == 33
func getSum(l: [Int], min: Int, max: Int) -> Int {
    var sum = 0
    for i in l {
        if i > min && i < max {
            sum += i
        }
    }
    return sum
}

// Return the sum of all the numbers in the array, but exclude any number that is within the range of min and max.
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], min: 3, max: 7) == 22
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], min: 5, max: 8) == 33
func getSum(l: [Int], min: Int, max: Int) -> Int {
    var sum = 0
    for i in l {
        if i > min && i < max {
            sum += i
        }
    }
    return sum
}

// Return the sum of all the numbers in the array, but exclude any number that is within the range of min and max.
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], min: 3, max: 7) == 22
//

func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}
```swift
// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2,

func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

func getSum(l: [Int]) -> Int {
    return l.reduce(0) { $0 + $1 }
}

func getSum(l: [Int], min: Int, max: Int) -> Int {
    return l.filter { $0 >= min && $0 <= max }.reduce(0) { $0 + $1 }
}
```swift
// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return the sum of all the numbers in the array.
// getSum(l: [1, 2, 3, 4, 5]) == 15
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 55
func getSum(l: [Int]) -> Int {
    return l.reduce(0) { $0 + $1 }
}

// Return the sum of all the numbers in the array, but exclude any number that is within the range of min and max.
// getSum(l: [1, 2, 3, 4, 5], min: 1, max: 3) == 10
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], min: 1, max: 3) == 21
func getSum(l: [Int], min: Int, max: Int) -> Int {
    return l.filter { $0 >= min && $0 <= max }.reduce(0) { $0 + $1 }
}

// Return the sum of all the numbers in the array, but exclude any number that is within the range of min and max.
// getSum(l: [1, 2, 3, 4, 5], min: 1, max: 3) == 10
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], min: 1, max: 3) == 21
func getSum(l: [Int], min: Int, max: Int) -> Int {
    return l.filter { $0 >= min && $0 <= max }.reduce(0) { $0 + $1 }
}

// Return the sum of all the numbers in the array, but exclude any number that is within the range of min and max.
// getSum(l: [1, 2, 3, 4, 5], min: 1, max: 3) == 10
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], min: 1, max: 3) == 21
func getSum(l: [Int], min: Int, max: Int) -> Int {
    return l.filter { $0 >= min && $0 <= max }.reduce(0) { $0 + $1 }
}

// Return the sum of all the numbers in the array, but exclude any number that is within the range of min and max.
// getSum(l: [1, 2, 3, 4, 5], min: 1, max: 3) == 10
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], min: 1, max: 3) == 21
func getSum(l: [Int], min: Int, max: Int) -> Int {
    return l.filter { $0 >= min && $0 <= max }.reduce(0) { $0 + $1 }
}

// Return the sum of all the numbers in the array, but exclude any number that is within the range of min and max.
// getSum(l: [1, 2, 3, 4, 5], min: 1, max: 3) == 10
// getSum(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], min: 1, max: 3) == 21
func getSum(l: [Int], min: Int, max: Int) -> Int {
    return l.filter { $0 >= min && $0 <= max }.reduce(0) { $0 + $1 }
}

// Return the sum of all the numbers in the array, but exclude any number that is within the range of min and max.
// getSum(l: [1, 2, 3, 4, 5], min: 1, max: 3) == 10
// getSum

func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}
```swift
// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2,

func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}
```swift
// Return only positive numbers in the array.
// getPositive(l: [-1, 2, -4, 5, 6]) == [2, 5, 6]
// getPositive(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]
func getPositive(l: [Int]) -> [Int] {
    return l.filter { $0 > 0 }
}

// Return the first element in the array.
// getFirst(l: [1, 2, 3, 4, 5]) == 1
// getFirst(l: [1, 2, 3, 4, 5, 6]) == 1
// getFirst(l: [1, 2, 3, 4, 5, 6, 7]) == 1
// getFirst(l: [1, 2, 3, 4, 5, 6, 7, 8]) == 1
// getFirst(l: [1, 2, 3, 4, 5, 6, 7, 8, 9]) == 1
// getFirst(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 1
// getFirst(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]) == 1
// getFirst(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]) == 1
// getFirst(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]) == 1
// getFirst(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]) == 1
// getFirst(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]) == 1
// getFirst(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]) == 1
// getFirst(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17]) == 1
// getFirst(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18]) == 1
// getFirst(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19]) == 1
// getFirst(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]) == 1
// getFirst(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21]) == 1
// getFirst(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22]) == 1
// getFirst(l: [1, 2, 3, 4

func isPrime(n: Int) -> Bool {
    if n <= 1 {
        return false
    }
    
    for i in 2..<n {
        if n % i == 0 {
            return false
        }
    }
    
    return true
}
```swift
// Return true if a given number is prime, and false otherwise.
// isPrime(n: 6) == false
// isPrime(n: 101) == true
// isPrime(n: 11) == true
// isPrime(n: 13441) == true
// isPrime(n: 61) == true
// isPrime(n: 4) == false
// isPrime(n: 1) == false
func isPrime(n: Int) -> Bool {
    if n <= 1 {
        return false
    }
    
    for i in 2..<n {
        if n % i == 0 {
            return false
        }
    }
    
    return true
}
<|file_separator|>

func isPrime(n: Int) -> Bool {
    if n == 1 {
        return false
    }
    
    for i in 2..<n {
        if n % i == 0 {
            return false
        }
    }
    
    return true
}
```swift
// Return true if a given number is prime, and false otherwise.
// isPrime(n: 6) == false
// isPrime(n: 101) == true
// isPrime(n: 11) == true
// isPrime(n: 13441) == true
// isPrime(n: 61) == true
// isPrime(n: 4) == false
// isPrime(n: 1) == false
func isPrime(n: Int) -> Bool {
    if n == 1 {
        return false
    }
    
    for i in 2..<n {
        if n % i == 0 {
            return false
        }
    }
    
    return true
}
<|file_separator|>

func isPrime(n: Int) -> Bool {
    if n == 1 {
        return false
    }
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...n/2 {
        if n % i == 0 {
            return false
        }
    }
    return true
}
```swift
// Return true if a given number is prime, and false otherwise.
// isPrime(n: 6) == false
// isPrime(n: 101) == true
// isPrime(n: 11) == true
// isPrime(n: 13441) == true
// isPrime(n: 61) == true
// isPrime(n: 4) == false
// isPrime(n: 1) == false
func isPrime(n: Int) -> Bool {
    if n == 1 {
        return false
    }
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...n/2 {
        if n % i == 0 {
            return false
        }
    }
    return true
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func isPrime(n: Int) -> Bool {
    if n <= 1 {
        return false
    }
    for i in 2..<n {
        if n % i == 0 {
            return false
        }
    }
    return true
}
```swift
// Return true if a given number is prime, and false otherwise.
// isPrime(n: 6) == false
// isPrime(n: 101) == true
// isPrime(n: 11) == true
// isPrime(n: 13441) == true
// isPrime(n: 61) == true
// isPrime(n: 4) == false
// isPrime(n: 1) == false
func isPrime(n: Int) -> Bool {
    if n <= 1 {
        return false
    }
    for i in 2..<n {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// Return the sum of all the numbers in a given array.
// sum(arr: [1, 2, 3, 4, 5]) == 15
// sum(arr: [10, 10, 10, 10, 10]) == 50
// sum(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 55
// sum(arr: [100, 100, 100, 100, 100]) == 500
// sum(arr: [1000, 1000, 1000, 1000, 1000]) == 5000
// sum(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]) == 210
// sum(arr: [1000000000000000000, 1000000000000000000, 1000000000000000000, 1000000000000000000]) == 5000000000000000000
// sum(arr: [1000000000000000000, 1000000000000000000, 1000000000000000000, 1000000000000000000, 1000000000000000000]) == 5000000000000000000
// sum(arr: [1000000000000000000, 1000000000000000000, 1000000000000000000, 1000000000000000000, 1000000000000000000, 1000000000000000000]) == 5000000000000000000
// sum(arr: [1000000000000000000, 1000000000000000000, 1000000000000000000, 1000000000000000000, 1000000000000000000, 1000000000000000000, 1000000000000000000]) == 5000000000000000000
// sum(arr: [1000000000000000000, 1000000000000000000, 1000000000000000000, 1000000000000000000, 1000000000000000000, 1000000000000000000, 

func isPrime(n: Int) -> Bool {
    if n == 1 {
        return false
    }
    
    for i in 2..<n {
        if n % i == 0 {
            return false
        }
    }
    
    return true
}
```swift
// Return true if a given number is prime, and false otherwise.
// isPrime(n: 6) == false
// isPrime(n: 101) == true
// isPrime(n: 11) == true
// isPrime(n: 13441) == true
// isPrime(n: 61) == true
// isPrime(n: 4) == false
// isPrime(n: 1) == false
func isPrime(n: Int) -> Bool {
    if n == 1 {
        return false
    }
    
    for i in 2..<n {
        if n % i == 0 {
            return false
        }
    }
    
    return true
}

// Return the sum of all the numbers in a given array.
// sum(arr: [1, 2, 3, 4, 5]) == 15
// sum(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 55
// sum(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]) == 210
// sum(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30]) == 555
// sum(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50]) == 111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111

func isPrime(n: Int) -> Bool {
    if n == 1 {
        return false
    }
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}
```swift
// Return true if a given number is prime, and false otherwise.
// isPrime(n: 6) == false
// isPrime(n: 101) == true
// isPrime(n: 11) == true
// isPrime(n: 13441) == true
// isPrime(n: 61) == true
// isPrime(n: 4) == false
// isPrime(n: 1) == false
func isPrime(n: Int) -> Bool {
    if n == 1 {
        return false
    }
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// Return the sum of all the elements in an array.
// sum(arr: [1, 2, 3, 4, 5]) == 15
// sum(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 55
// sum(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]) == 210
// sum(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30]) == 555
// sum(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50]) == 11111
// sum(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100]) == 55555
// sum(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
 // Fatal error: Range requires lowerBound <= upperBound

func isPrime(n: Int) -> Bool {
    if n == 1 {
        return false
    }
    for i in 2..<n {
        if n % i == 0 {
            return false
        }
    }
    return true
}

func sumOfPrimes(n: Int) -> Int {
    var sum = 0
    for i in 2...n {
        if isPrime(n: i) {
            sum += i
        }
    }
    return sum
}

func countPrimes(n: Int) -> Int {
    var count = 0
    for i in 2...n {
        if isPrime(n: i) {
            count += 1
        }
    }
    return count
}
```swift
// Return true if a given number is prime, and false otherwise.
// isPrime(n: 6) == false
// isPrime(n: 101) == true
// isPrime(n: 11) == true
// isPrime(n: 13441) == true
// isPrime(n: 61) == true
// isPrime(n: 4) == false
// isPrime(n: 1) == false
func isPrime(n: Int) -> Bool {
    if n == 1 {
        return false
    }
    for i in 2..<n {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// Return the sum of all the prime numbers less than or equal to n.
// sumOfPrimes(n: 10) == 17
// sumOfPrimes(n: 100) == 1060
// sumOfPrimes(n: 1000) == 10005
// sumOfPrimes(n: 10000) == 100003
// sumOfPrimes(n: 100000) == 1000003
// sumOfPrimes(n: 1000000) == 10000003
// sumOfPrimes(n: 10000000) == 100000003
// sumOfPrimes(n: 100000000) == 1000000003
// sumOfPrimes(n: 1000000000) == 10000000003
func sumOfPrimes(n: Int) -> Int {
    var sum = 0
    for i in 2...n {
        if isPrime(n: i) {
            sum += i
        }
    }
    return sum
}

// Return the number of prime numbers less than or equal to n.
// countPrimes(n: 10) == 4
// countPrimes(n: 100) == 25
// countPrimes(n: 1000) == 168
// countPrimes(n: 10000) == 1229
// countPrimes(n: 100000) == 9592
// countPrimes(n: 1000000) == 78498
// countPrimes(n: 10000000) == 664579
// countPrimes(n: 100000000) == 5761455
// countPrimes(n: 1000000000) == 50847500
func countPrimes(n: Int) -> Int {
    var count = 0
    for i in 2...n {
        if isPrime(n: i) {
            count += 1
        }
    }
    return count
}

// Return the sum of all the numbers less than or equal to n that are divisible by k.
// sumOfDivided(n: 10, k: 3) == 14
// sumOfDivided(n: 10, k: 5) == 6
// sumOfDivided(n: 10, k: 7) == 0
// sumOfDivided(n: 100, k: 3) == 241
// sumOfDivided(n: 100, k: 5) == 45
// sumOfDivided(n: 100, k: 7) == 10
// sumOfDivided(n: 1000, k: 3) == 2410
// sumOfDivided(n: 1000, k: 5) == 450
// sumOfDivided(n: 1000, k: 7) == 100
// sumOfDivided(n: 10000, k: 3) == 24100
// sumOfDivided(n: 10000, k: 5) == 4500
// sumOfDivided(n: 10000, k: 7) == 1000
// sumOfDivided(n: 100000, k: 3) == 241000
// sumOfDivided(n: 100000, k: 5) == 45000
// sumOfDivided(n: 100000, k: 7) == 10000
// sumOfDivided(

func isPrime(n: Int) -> Bool {
  if n == 1 {
    return false
  }
  for i in 2..<n {
    if n % i == 0 {
      return false
    }
  }
  return true
}
```swift
// Return true if a given number is prime, and false otherwise.
// isPrime(n: 6) == false
// isPrime(n: 101) == true
// isPrime(n: 11) == true
// isPrime(n: 13441) == true
// isPrime(n: 61) == true
// isPrime(n: 4) == false
// isPrime(n: 1) == false
func isPrime(n: Int) -> Bool {
  if n == 1 {
    return false
  }
  for i in 2..<n {
    if n % i == 0 {
      return false
    }
  }
  return true
}

// Return the number of prime numbers that exist up to and including n.
// countPrimes(n: 10) == 4
// countPrimes(n: 100) == 25
// countPrimes(n: 1000) == 168
// countPrimes(n: 10000) == 1229
// countPrimes(n: 100000) == 78498
// countPrimes(n: 1000000) == 664579
// countPrimes(n: 10000000) == 5761455
// countPrimes(n: 100000000) == 4613732
// countPrimes(n: 1000000000) == 37660682
// countPrimes(n: 10000000000) == 2971215073
// countPrimes(n: 100000000000) == 2329905900
// countPrimes(n: 1000000000000) == 1679023590
// countPrimes(n: 10000000000000) == 1166778750
// countPrimes(n: 100000000000000) == 781252789
// countPrimes(n: 1000000000000000) == 576145427
// countPrimes(n: 10000000000000000) == 461373258
// countPrimes(n: 100000000000000000) == 3766068229
// countPrimes(n: 1000000000000000000) == 29712150767
// countPrimes(n: 10000000000000000000) == 232990590349
// countPrimes(n: 100000000000000000000) == 1679023590433
// countPrimes(n: 1000000000000000000000) == 1166778750587
// countPrimes(n: 10000000000000000000000) == 7812527896419
// countPrimes(n: 100000000000000000000000) == 5761454279361
// countPrimes(n: 1000000000000000000000000) == 46137325828033
// countPrimes(n: 10000000000000000000000000) == 37660682295887
// countPrimes(n: 100000000000000000000000000) == 297121507673743
// countPrimes(n: 1000000000000000000000000000) == 2329905903496937

func isPrime(n: Int) -> Bool {
  if n == 1 {
    return false
  }
  for i in 2..<n {
    if n % i == 0 {
      return false
    }
  }
  return true
}
```swift
// Return true if a given number is prime, and false otherwise.
// isPrime(n: 6) == false
// isPrime(n: 101) == true
// isPrime(n: 11) == true
// isPrime(n: 13441) == true
// isPrime(n: 61) == true
// isPrime(n: 4) == false
// isPrime(n: 1) == false
func isPrime(n: Int) -> Bool {
  if n == 1 {
    return false
  }
  for i in 2..<n {
    if n % i == 0 {
      return false
    }
  }
  return true
}

// Return the sum of all the numbers in a given array.
// sum(array: [1, 2, 3, 4, 5]) == 15
// sum(array: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 55
// sum(array: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]) == 210
// sum(array: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30]) == 555
// sum(array: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50]) == 11111
// sum(array: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100]) == 55555
// sum(array: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21

func isPrime(n: Int) -> Bool {
    if n == 1 {
        return false
    }
    for i in 2..<n {
        if n % i == 0 {
            return false
        }
    }
    return true
}
```swift
// Return true if a given number is prime, and false otherwise.
// isPrime(n: 6) == false
// isPrime(n: 101) == true
// isPrime(n: 11) == true
// isPrime(n: 13441) == true
// isPrime(n: 61) == true
// isPrime(n: 4) == false
// isPrime(n: 1) == false
func isPrime(n: Int) -> Bool {
    if n == 1 {
        return false
    }
    for i in 2..<n {
        if n % i == 0 {
            return false
        }
    }
    return true
}
<|file_separator|>

func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i]
        }
    }
    return l
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the indicies that are not divisible by three, while its values at the indicies that are divisible by three are equal
// to the values of the corresponding indicies of l, but sorted.
// sortThird(l: [1, 2, 3]) == [1, 2, 3]
// sortThird(l: [5, 6, 3, 4, 8, 9, 2]) == [2, 6, 3, 4, 8, 9, 5]
func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i]
        }
    }
    return l
}
<|file_separator|>
 // XCTAssertTrue failed

func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i]
        }
    }
    return l
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the indicies that are not divisible by three, while its values at the indicies that are divisible by three are equal
// to the values of the corresponding indicies of l, but sorted.
// sortThird(l: [1, 2, 3]) == [1, 2, 3]
// sortThird(l: [5, 6, 3, 4, 8, 9, 2]) == [2, 6, 3, 4, 8, 9, 5]
func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i]
        }
    }
    return l
}
<|file_separator|>
 // XCTAssertTrue failed

func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i]
        }
    }
    return l
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the indicies that are not divisible by three, while its values at the indicies that are divisible by three are equal
// to the values of the corresponding indicies of l, but sorted.
// sortThird(l: [1, 2, 3]) == [1, 2, 3]
// sortThird(l: [5, 6, 3, 4, 8, 9, 2]) == [2, 6, 3, 4, 8, 9, 5]
func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i]
        }
    }
    return l
}
<|file_separator|>
 // XCTAssertTrue failed

func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i]
        }
    }
    return l
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the indicies that are not divisible by three, while its values at the indicies that are divisible by three are equal
// to the values of the corresponding indicies of l, but sorted.
// sortThird(l: [1, 2, 3]) == [1, 2, 3]
// sortThird(l: [5, 6, 3, 4, 8, 9, 2]) == [2, 6, 3, 4, 8, 9, 5]
func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i]
        }
    }
    return l
}
<|file_separator|>
 // XCTAssertTrue failed

func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i]
        }
    }
    return l
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the indicies that are not divisible by three, while its values at the indicies that are divisible by three are equal
// to the values of the corresponding indicies of l, but sorted.
// sortThird(l: [1, 2, 3]) == [1, 2, 3]
// sortThird(l: [5, 6, 3, 4, 8, 9, 2]) == [2, 6, 3, 4, 8, 9, 5]
func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i]
        }
    }
    return l
}
<|file_separator|>
 // XCTAssertTrue failed

func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i]
        }
    }
    return l
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the indicies that are not divisible by three, while its values at the indicies that are divisible by three are equal
// to the values of the corresponding indicies of l, but sorted.
// sortThird(l: [1, 2, 3]) == [1, 2, 3]
// sortThird(l: [5, 6, 3, 4, 8, 9, 2]) == [2, 6, 3, 4, 8, 9, 5]
func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i]
        }
    }
    return l
}
<|file_separator|>
 // XCTAssertTrue failed

func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        }
    }
    return l
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the indicies that are not divisible by three, while its values at the indicies that are divisible by three are equal
// to the values of the corresponding indicies of l, but sorted.
// sortThird(l: [1, 2, 3]) == [1, 2, 3]
// sortThird(l: [5, 6, 3, 4, 8, 9, 2]) == [2, 6, 3, 4, 8, 9, 5]
func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        }
    }
    return l
}
<|file_separator|>
 // XCTAssertTrue failed

func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        }
    }
    l.sort()
    return l
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the indicies that are not divisible by three, while its values at the indicies that are divisible by three are equal
// to the values of the corresponding indicies of l, but sorted.
// sortThird(l: [1, 2, 3]) == [1, 2, 3]
// sortThird(l: [5, 6, 3, 4, 8, 9, 2]) == [2, 6, 3, 4, 8, 9, 5]
func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        }
    }
    l.sort()
    return l
}
<|file_separator|>
 // XCTAssertTrue failed

func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i]
        }
    }
    return l
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the indicies that are not divisible by three, while its values at the indicies that are divisible by three are equal
// to the values of the corresponding indicies of l, but sorted.
// sortThird(l: [1, 2, 3]) == [1, 2, 3]
// sortThird(l: [5, 6, 3, 4, 8, 9, 2]) == [2, 6, 3, 4, 8, 9, 5]
func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i]
        }
    }
    return l
}
<|file_separator|>
 // XCTAssertTrue failed

func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i]
        }
    }
    return l
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the indicies that are not divisible by three, while its values at the indicies that are divisible by three are equal
// to the values of the corresponding indicies of l, but sorted.
// sortThird(l: [1, 2, 3]) == [1, 2, 3]
// sortThird(l: [5, 6, 3, 4, 8, 9, 2]) == [2, 6, 3, 4, 8, 9, 5]
func sortThird(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 3 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i]
        }
    }
    return l
}
<|file_separator|>
 // XCTAssertTrue failed

func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    var dict = [Int: Bool]()
    for i in l {
        if !dict[i] {
            result.append(i)
            dict[i] = true
        }
    }
    return result
}
```swift
// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    var dict = [Int: Bool]()
    for i in l {
        if !dict[i] {
            result.append(i)
            dict[i] = true
        }
    }
    return result
}
<|file_separator|>
if !dict[i] { // value of optional type 'Bool?' must be unwrapped to a value of type 'Bool'

func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

func unique2(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted()
}

func unique3(l: [Int]) -> [Int] {
    return Set(l).sorted()
}

func unique4(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted().unique()
}

func unique5(l: [Int]) -> [Int] {
    return Set(l).sorted().unique()
}

func unique6(l: [Int]) -> [Int] {
    return Set(l).sorted().unique()
}

func unique7(l: [Int]) -> [Int] {
    return Set(l).sorted().unique()
}

func unique8(l: [Int]) -> [Int] {
    return Set(l).sorted().unique()
}

func unique9(l: [Int]) -> [Int] {
    return Set(l).sorted().unique()
}

func unique10(l: [Int]) -> [Int] {
    return Set(l).sorted().unique()
}

func unique11(l: [Int]) -> [Int] {
    return Set(l).sorted().unique()
}
```swift
// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique2(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique3(l: [Int]) -> [Int] {
    return Set(l).sorted()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique4(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique5(l: [Int]) -> [Int] {
    return Set(l).sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique6(l: [Int]) -> [Int] {
    return Set(l).sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique7(l: [Int]) -> [Int] {
    return Set(l).sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique8(l: [Int]) -> [Int] {
    return Set(l).sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique9(l: [Int]) -> [Int] {
    return Set(l).sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique10(l: [Int]) -> [Int] {
    return Set(l).sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique11(l: [Int]) -> [Int] {
    return Set(l).sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [
return Array(Set(l)).sorted().unique() // value of type '[Int]' has no member 'unique'
return Set(l).sorted().unique() // value of type '[Int]' has no member 'unique'
return Set(l).sorted().unique() // value of type '[Int]' has no member 'unique'
return Set(l).sorted().unique() // value of type '[Int]' has no member 'unique'
return Set(l).sorted().unique() // value of type '[Int]' has no member 'unique'
return Set(l).sorted().unique() // value of type '[Int]' has no member 'unique'
return Set(l).sorted().unique() // value of type '[Int]' has no member 'unique'
return Set(l).sorted().unique() // value of type '[Int]' has no member 'unique'

func unique(l: [Int]) -> [Int] {
    var unique = [Int]()
    for i in l {
        if !unique.contains(i) {
            unique.append(i)
        }
    }
    return unique
}

func unique2(l: [Int]) -> [Int] {
    var unique = [Int]()
    for i in l {
        if !unique.contains(i) {
            unique.append(i)
        }
    }
    return unique.sorted()
}

func unique3(l: [Int]) -> [Int] {
    var unique = [Int]()
    for i in l {
        if !unique.contains(i) {
            unique.append(i)
        }
    }
    return unique.sorted().unique()
}

func unique4(l: [Int]) -> [Int] {
    var unique = [Int]()
    for i in l {
        if !unique.contains(i) {
            unique.append(i)
        }
    }
    return unique.sorted().unique()
}

func unique5(l: [Int]) -> [Int] {
    var unique = [Int]()
    for i in l {
        if !unique.contains(i) {
            unique.append(i)
        }
    }
    return unique.sorted().unique()
}

func unique6(l: [Int]) -> [Int] {
    var unique = [Int]()
    for i in l {
        if !unique.contains(i) {
            unique.append(i)
        }
    }
    return unique.sorted().unique()
}

func unique7(l: [Int]) -> [Int] {
    var unique = [Int]()
    for i in l {
        if !unique.contains(i) {
            unique.append(i)
        }
    }
    return unique.sorted().unique()
}

func unique8(l: [Int]) -> [Int] {
    var unique = [Int]()
    for i in l {
        if !unique.contains(i) {
            unique.append(i)
        }
    }
    return unique.sorted().unique()
}
```swift
// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var unique = [Int]()
    for i in l {
        if !unique.contains(i) {
            unique.append(i)
        }
    }
    return unique
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique2(l: [Int]) -> [Int] {
    var unique = [Int]()
    for i in l {
        if !unique.contains(i) {
            unique.append(i)
        }
    }
    return unique.sorted()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique3(l: [Int]) -> [Int] {
    var unique = [Int]()
    for i in l {
        if !unique.contains(i) {
            unique.append(i)
        }
    }
    return unique.sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique4(l: [Int]) -> [Int] {
    var unique = [Int]()
    for i in l {
        if !unique.contains(i) {
            unique.append(i)
        }
    }
    return unique.sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique5(l: [Int]) -> [Int] {
    var unique = [Int]()
    for i in l {
        if !unique.contains(i) {
            unique.append(i)
        }
    }
    return unique.sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique6(l: [Int]) -> [Int] {
    var unique = [Int]()
    for i in l {
        if !unique.contains(i) {
            unique.append(i)
        }
    }
    return unique.sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique7(l: [Int]) -> [Int] {
    var unique = [Int]()
    for i in l {
        if !unique.contains(i) {
            unique.append(i)
        }
    }
    return unique.sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique8(l: [Int]) -> [Int] {
    var unique = [Int]()
    for i in l {
        if !unique.contains(i) {
            unique.append(i)
        }
    }
    return unique.sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 12
return unique.sorted().unique() // value of type '[Int]' has no member 'unique'
return unique.sorted().unique() // value of type '[Int]' has no member 'unique'
return unique.sorted().unique() // value of type '[Int]' has no member 'unique'
return unique.sorted().unique() // value of type '[Int]' has no member 'unique'
return unique.sorted().unique() // value of type '[Int]' has no member 'unique'
return unique.sorted().unique() // value of type '[Int]' has no member 'unique'

func unique(l: [Int]) -> [Int] {
    return Array(Set(l))
}
```swift
// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l))
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l))
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l))
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l))
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l))
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l))
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l))
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l))
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l))
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l))
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l))
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l))
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5
 // XCTAssertTrue failed

func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Bool]()
    for i in l {
        if !seen.keys.contains(i) {
            result.append(i)
            seen[i] = true
        }
    }
    return result
}

func unique(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted()
}

func unique(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted().unique()
}
```swift
// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    var seen = [Int: Bool]()
    for i in l {
        if !seen.keys.contains(i) {
            result.append(i)
            seen[i] = true
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted().unique()
}

// Return sorted unique elements in an array
// unique(l: [5, 3
func unique(l: [Int]) -> [Int] { // invalid redeclaration of 'unique(l:)'
func unique(l: [Int]) -> [Int] { // invalid redeclaration of 'unique(l:)'
return Array(Set(l)).sorted().unique() // value of type '[Int]' has no member 'unique'

func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

func unique(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted()
}

func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    var set = Set<Int>()
    for i in l {
        if !set.contains(i) {
            result.append(i)
            set.insert(i)
        }
    }
    return result
}

func unique(l: [Int]) -> [Int] {
    return Set(l).sorted()
}
```swift
// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    var set = Set<Int>()
    for i in l {
        if !set.contains(i) {
            result.append(i)
            set.insert(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Set(l).sorted()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Set(l).sorted()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Set(l).sorted()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Array(Set(l)).sorted()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    return Set(l).sorted()
}

// Return sorted unique elements in an array
// unique(l: [
func unique(l: [Int]) -> [Int] { // invalid redeclaration of 'unique(l:)'
func unique(l: [Int]) -> [Int] { // invalid redeclaration of 'unique(l:)'
func unique(l: [Int]) -> [Int] { // invalid redeclaration of 'unique(l:)'

func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}
```swift
// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i
 // XCTAssertTrue failed

func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

func unique2(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result.sorted()
}

func unique3(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result.sorted(by: <)
}

func unique4(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result.sorted(by: >)
}

func unique5(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result.sorted(by: { $0 < $1 })
}

func unique6(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result.sorted(by: { $0 > $1 })
}

func unique7(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result.sorted(by: { $0 == $1 })
}

func unique8(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result.sorted(by: { $0 != $1 })
}
```swift
// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique2(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result.sorted()
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique3(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result.sorted(by: <)
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique4(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result.sorted(by: >)
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique5(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result.sorted(by: { $0 < $1 })
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique6(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result.sorted(by: { $0 > $1 })
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique7(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result.sorted(by: { $0 == $1 })
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique8(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result.sorted(by: { $0 != $1 })
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 
 // XCTAssertTrue failed

func unique(l: [Int]) -> [Int] {
    var unique = [Int]()
    for i in l {
        if !unique.contains(i) {
            unique.append(i)
        }
    }
    return unique
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    return sum
}

func sum2(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        if i >= 0 {
            sum += i
        }
    }
    return sum
}

func sum3(l: [Int]) -> Int {
    return l.filter { $0 >= 0 }.reduce(0, +)
}

func sum4(l: [Int]) -> Int {
    return l.filter { $0 >= 0 }.reduce(0, { $0 + $1 })
}

func sum5(l: [Int]) -> Int {
    return l.filter { $0 >= 0 }.reduce(0, { $0 + $1 })
}

func sum6(l: [Int]) -> Int {
    return l.filter { $0 >= 0 }.reduce(0, { $0 + $1 })
}

func sum7(l: [Int]) -> Int {
    return l.filter { $0 >= 0 }.reduce(0, { $0 + $1 })
}

func sum8(l: [Int]) -> Int {
    return l.filter { $0 >= 0 }.reduce(0, { $0 + $1 })
}

func sum9(l: [Int]) -> Int {
    return l.filter { $0 >= 0 }.reduce(0, { $0 + $1 })
}

func sum10(l: [Int]) -> Int {
    return l.filter { $0 >= 0 }.reduce(0, { $0 + $1 })
}
```swift
// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var unique = [Int]()
    for i in l {
        if !unique.contains(i) {
            unique.append(i)
        }
    }
    return unique
}

// Return the sum of all elements in an array
// sum(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == 129
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    return sum
}

// Return the sum of all elements in an array, excluding negative numbers
// sum(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == 129
func sum2(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        if i >= 0 {
            sum += i
        }
    }
    return sum
}

// Return the sum of all elements in an array, excluding negative numbers
// sum(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == 129
func sum3(l: [Int]) -> Int {
    return l.filter { $0 >= 0 }.reduce(0, +)
}

// Return the sum of all elements in an array, excluding negative numbers
// sum(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == 129
func sum4(l: [Int]) -> Int {
    return l.filter { $0 >= 0 }.reduce(0, { $0 + $1 })
}

// Return the sum of all elements in an array, excluding negative numbers
// sum(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == 129
func sum5(l: [Int]) -> Int {
    return l.filter { $0 >= 0 }.reduce(0, { $0 + $1 })
}

// Return the sum of all elements in an array, excluding negative numbers
// sum(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == 129
func sum6(l: [Int]) -> Int {
    return l.filter { $0 >= 0 }.reduce(0, { $0 + $1 })
}

// Return the sum of all elements in an array, excluding negative numbers
// sum(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == 129
func sum7(l: [Int]) -> Int {
    return l.filter { $0 >= 0 }.reduce(0, { $0 + $1 })
}

// Return the sum of all elements in an array, excluding negative numbers
// sum(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == 129
func sum8(l: [Int]) -> Int {
    return l.filter { $0 >= 0 }.reduce(0, { $0 + $1 })
}

// Return the sum of all elements in an array, excluding negative numbers
// sum(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == 129
func sum9(l: [Int]) -> Int {
    return l.filter { $0 >= 0 }.reduce(0, { $0 + $1 })
}

// Return the sum of all elements in an array, excluding negative numbers
// sum(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == 129
func sum10(l: [Int]) -> Int {
    return l.filter { $0 >= 0 }.reduce(0, { $0 + $1 })
}

// Return the sum of all elements in an array, excluding negative numbers
// sum(l: [5, 3, 5, 2
 // XCTAssertTrue failed

func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}
```swift
// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i) {
            result.append(i)
        }
    }
    return result
}

// Return sorted unique elements in an array
// unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
func unique(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        if !result.contains(i
 // XCTAssertTrue failed

func maxElement(l: [Int]) -> Int {
    var max = l[0]
    for i in 1..<l.count {
        if l[i] > max {
            max = l[i]
        }
    }
    return max
}

func minElement(l: [Int]) -> Int {
    var min = l[0]
    for i in 1..<l.count {
        if l[i] < min {
            min = l[i]
        }
    }
    return min
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 0..<l.count {
        sum += l[i]
    }
    return sum
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]
    }
    return sum
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 0..<l.count-1 {
        sum += l[i]
    }
    return sum
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count {
        sum += l[i]
    }
    return sum
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 0..<l.count-2 {
        sum += l[i]
    }
    return sum
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 0..<l.count-3 {
        sum += l[i]
    }
    return sum
}
```swift
// Return maximum element in the array.
// maxElement(l: [1, 2, 3]) == 3
// maxElement(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 123
func maxElement(l: [Int]) -> Int {
    var max = l[0]
    for i in 1..<l.count {
        if l[i] > max {
            max = l[i]
        }
    }
    return max
}

// Return minimum element in the array.
// minElement(l: [1, 2, 3]) == 1
// minElement(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == -10
func minElement(l: [Int]) -> Int {
    var min = l[0]
    for i in 1..<l.count {
        if l[i] < min {
            min = l[i]
        }
    }
    return min
}

// Return the sum of all elements in the array.
// sum(l: [1, 2, 3]) == 6
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 142
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 0..<l.count {
        sum += l[i]
    }
    return sum
}

// Return the sum of all elements in the array, except for the first and last element.
// sum(l: [1, 2, 3]) == 2
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 142
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]
    }
    return sum
}

// Return the sum of all elements in the array, except for the last element.
// sum(l: [1, 2, 3]) == 5
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 142
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 0..<l.count-1 {
        sum += l[i]
    }
    return sum
}

// Return the sum of all elements in the array, except for the first element.
// sum(l: [1, 2, 3]) == 4
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 142
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count {
        sum += l[i]
    }
    return sum
}

// Return the sum of all elements in the array, except for the second to last element.
// sum(l: [1, 2, 3]) == 3
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 142
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 0..<l.count-2 {
        sum += l[i]
    }
    return sum
}

// Return the sum of all elements in the array, except for the third to last element.
// sum(l: [1, 2, 3]) == 2
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 142
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 0..<l.count-3 {
        sum += l[i]
    }
    return sum
}

// Return the sum of all elements in the array, except for the fourth to last element.
// sum(l: [1, 2, 3]) == 1
//
func sum(l: [Int]) -> Int { // invalid redeclaration of 'sum(l:)'
func sum(l: [Int]) -> Int { // invalid redeclaration of 'sum(l:)'
func sum(l: [Int]) -> Int { // invalid redeclaration of 'sum(l:)'
func sum(l: [Int]) -> Int { // invalid redeclaration of 'sum(l:)'
func sum(l: [Int]) -> Int { // invalid redeclaration of 'sum(l:)'

func maxElement(l: [Int]) -> Int {
    var max = l[0]
    for i in 1..<l.count {
        if l[i] > max {
            max = l[i]
        }
    }
    return max
}

func minElement(l: [Int]) -> Int {
    var min = l[0]
    for i in 1..<l.count {
        if l[i] < min {
            min = l[i]
        }
    }
    return min
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    return sum
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count - 1 {
        sum += l[i]
    }
    return sum
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count - 1 {
        sum += l[i]
    }
    if sum > 100 {
        return sum
    }
    return 0
}
```swift
// Return maximum element in the array.
// maxElement(l: [1, 2, 3]) == 3
// maxElement(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 123
func maxElement(l: [Int]) -> Int {
    var max = l[0]
    for i in 1..<l.count {
        if l[i] > max {
            max = l[i]
        }
    }
    return max
}

// Return minimum element in the array.
// minElement(l: [1, 2, 3]) == 1
// minElement(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == -10
func minElement(l: [Int]) -> Int {
    var min = l[0]
    for i in 1..<l.count {
        if l[i] < min {
            min = l[i]
        }
    }
    return min
}

// Return the sum of all elements in the array.
// sum(l: [1, 2, 3]) == 6
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 148
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    return sum
}

// Return the sum of all elements in the array, except for the first and last elements.
// sum(l: [1, 2, 3]) == 2
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 148
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count - 1 {
        sum += l[i]
    }
    return sum
}

// Return the sum of all elements in the array, except for the first and last elements,
// but only if the sum is greater than 100.
// sum(l: [1, 2, 3]) == 2
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 148
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10, 101]) == 202
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count - 1 {
        sum += l[i]
    }
    if sum > 100 {
        return sum
    }
    return 0
}

// Return the sum of all elements in the array, except for the first and last elements,
// but only if the sum is greater than 100.
// sum(l: [1, 2, 3]) == 2
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 148
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10, 101]) == 202
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count - 1 {
        sum += l[i]
    }
    if sum > 100 {
        return sum
    }
    return 0
}

// Return the sum of all elements in the array, except for the first and last elements,
// but only if the sum is greater than 100.
// sum(l: [1, 2, 3]) == 2
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 148
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -
func sum(l: [Int]) -> Int { // invalid redeclaration of 'sum(l:)'
func sum(l: [Int]) -> Int { // invalid redeclaration of 'sum(l:)'

func maxElement(l: [Int]) -> Int {
    var max = l[0]
    for i in 1..<l.count {
        if l[i] > max {
            max = l[i]
        }
    }
    return max
}

func minElement(l: [Int]) -> Int {
    var min = l[0]
    for i in 1..<l.count {
        if l[i] < min {
            min = l[i]
        }
    }
    return min
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    return sum
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]
    }
    return sum
}

func average(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    return sum/l.count
}

func average(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]
    }
    return sum/(l.count-2)
}

func doubleSum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]*2
    }
    return sum
}
```swift
// Return maximum element in the array.
// maxElement(l: [1, 2, 3]) == 3
// maxElement(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 123
func maxElement(l: [Int]) -> Int {
    var max = l[0]
    for i in 1..<l.count {
        if l[i] > max {
            max = l[i]
        }
    }
    return max
}

// Return minimum element in the array.
// minElement(l: [1, 2, 3]) == 1
// minElement(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == -10
func minElement(l: [Int]) -> Int {
    var min = l[0]
    for i in 1..<l.count {
        if l[i] < min {
            min = l[i]
        }
    }
    return min
}

// Return sum of all elements in the array.
// sum(l: [1, 2, 3]) == 6
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 234
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    return sum
}

// Return sum of all elements in the array, except for the first and last elements.
// sum(l: [1, 2, 3]) == 2
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 222
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]
    }
    return sum
}

// Return the average of all elements in the array.
// average(l: [1, 2, 3]) == 2
// average(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 3
func average(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    return sum/l.count
}

// Return the average of all elements in the array, except for the first and last elements.
// average(l: [1, 2, 3]) == 2
// average(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 3
func average(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]
    }
    return sum/(l.count-2)
}

// Return the sum of all elements in the array, except for the first and last elements,
// and multiplied by 2.
// doubleSum(l: [1, 2, 3]) == 14
// doubleSum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 266
func doubleSum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]*2
    }
    return sum
}

// Return the sum of all elements in the array, except for the first and last elements,
// and multiplied by 2, except for the first and last elements.
// doubleSum(l: [1, 2, 3]) == 14
// doubleSum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 266
func doubleSum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]*2
    }
    return sum
}

// Return the sum of all elements in the array, except for the first and last elements,
func sum(l: [Int]) -> Int { // invalid redeclaration of 'sum(l:)'
func average(l: [Int]) -> Int { // invalid redeclaration of 'average(l:)'

func maxElement(l: [Int]) -> Int {
    var max = l[0]
    for i in 1..<l.count {
        if l[i] > max {
            max = l[i]
        }
    }
    return max
}

func minElement(l: [Int]) -> Int {
    var min = l[0]
    for i in 1..<l.count {
        if l[i] < min {
            min = l[i]
        }
    }
    return min
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 0..<l.count {
        sum += l[i]
    }
    return sum
}

func count(l: [Int], v: Int) -> Int {
    var count = 0
    for i in 0..<l.count {
        if l[i] > v {
            count += 1
        }
    }
    return count
}

func count(l: [Int], v: Int) -> Int {
    var count = 0
    for i in 0..<l.count {
        if l[i] < v {
            count += 1
        }
    }
    return count
}

func count(l: [Int], v: Int) -> Int {
    var count = 0
    for i in 0..<l.count {
        if l[i] == v {
            count += 1
        }
    }
    return count
}

func count(l: [Int], v: Int) -> Int {
    var count = 0
    for i in 0..<l.count {
        if l[i] >= v {
            count += 1
        }
    }
    return count
}
```swift
// Return maximum element in the array.
// maxElement(l: [1, 2, 3]) == 3
// maxElement(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 123
func maxElement(l: [Int]) -> Int {
    var max = l[0]
    for i in 1..<l.count {
        if l[i] > max {
            max = l[i]
        }
    }
    return max
}

// Return minimum element in the array.
// minElement(l: [1, 2, 3]) == 1
// minElement(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == -10
func minElement(l: [Int]) -> Int {
    var min = l[0]
    for i in 1..<l.count {
        if l[i] < min {
            min = l[i]
        }
    }
    return min
}

// Return sum of all elements in the array.
// sum(l: [1, 2, 3]) == 6
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 145
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 0..<l.count {
        sum += l[i]
    }
    return sum
}

// Return the number of elements in the array that are greater than the given value.
// count(l: [1, 2, 3], v: 2) == 1
// count(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10], v: 3) == 4
func count(l: [Int], v: Int) -> Int {
    var count = 0
    for i in 0..<l.count {
        if l[i] > v {
            count += 1
        }
    }
    return count
}

// Return the number of elements in the array that are less than the given value.
// count(l: [1, 2, 3], v: 2) == 1
// count(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10], v: 3) == 4
func count(l: [Int], v: Int) -> Int {
    var count = 0
    for i in 0..<l.count {
        if l[i] < v {
            count += 1
        }
    }
    return count
}

// Return the number of elements in the array that are equal to the given value.
// count(l: [1, 2, 3], v: 2) == 1
// count(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10], v: 3) == 4
func count(l: [Int], v: Int) -> Int {
    var count = 0
    for i in 0..<l.count {
        if l[i] == v {
            count += 1
        }
    }
    return count
}

// Return the number of elements in the array that are greater than or equal to the given value.
// count(l: [1, 2, 3], v: 2) == 1
// count(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10], v: 3) == 4
func count(l: [Int], v: Int) -> Int {
    var count = 0
    for i in 0..<l.count {
        if l[i] >= v {
            count += 1
        }
    }
    return count
}

// Return the number of elements in the array that are less than or equal to the given value.
// count(l: [1, 2, 3], v: 2) == 1
// count(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10], v: 3)
func count(l: [Int], v: Int) -> Int { // invalid redeclaration of 'count(l:v:)'
func count(l: [Int], v: Int) -> Int { // invalid redeclaration of 'count(l:v:)'
func count(l: [Int], v: Int) -> Int { // invalid redeclaration of 'count(l:v:)'

func maxElement(l: [Int]) -> Int {
    var max = l[0]
    for i in 1..<l.count {
        if l[i] > max {
            max = l[i]
        }
    }
    return max
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    return sum
}

func sum2(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    if sum > 100 {
        return sum
    }
    return 0
}

func sum3(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    if sum > 100 {
        return sum
    }
    return 0
}

func sum4(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    if sum > 100 {
        return sum
    }
    return 0
}

func sum5(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    if sum > 100 {
        return sum
    }
    return 0
}

func sum6(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    if sum > 100 {
        return sum
    }
    return 0
}
```swift
// Return maximum element in the array.
// maxElement(l: [1, 2, 3]) == 3
// maxElement(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 123
func maxElement(l: [Int]) -> Int {
    var max = l[0]
    for i in 1..<l.count {
        if l[i] > max {
            max = l[i]
        }
    }
    return max
}

// Return the sum of all elements in the array.
// sum(l: [1, 2, 3]) == 6
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 223
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    return sum
}

// Return the sum of all elements in the array, but only if the sum is greater than 100.
// sum(l: [1, 2, 3]) == 6
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 223
// sum(l: [101, 2, 3]) == 103
func sum2(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    if sum > 100 {
        return sum
    }
    return 0
}

// Return the sum of all elements in the array, but only if the sum is greater than 100.
// sum(l: [1, 2, 3]) == 6
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 223
// sum(l: [101, 2, 3]) == 103
func sum3(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    if sum > 100 {
        return sum
    }
    return 0
}

// Return the sum of all elements in the array, but only if the sum is greater than 100.
// sum(l: [1, 2, 3]) == 6
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 223
// sum(l: [101, 2, 3]) == 103
func sum4(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    if sum > 100 {
        return sum
    }
    return 0
}

// Return the sum of all elements in the array, but only if the sum is greater than 100.
// sum(l: [1, 2, 3]) == 6
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 223
// sum(l: [101, 2, 3]) == 103
func sum5(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    if sum > 100 {
        return sum
    }
    return 0
}

// Return the sum of all elements in the array, but only if the sum is greater than 100.
// sum(l: [1, 2, 3]) == 6
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 223
// sum(l: [101, 2, 3]) == 103
func sum6(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    if sum > 100 {
        return sum
    }
    return 0
}

func maxElement(l: [Int]) -> Int {
    var max = l[0]
    for i in 1..<l.count {
        if l[i] > max {
            max = l[i]
        }
    }
    return max
}

func minElement(l: [Int]) -> Int {
    var min = l[0]
    for i in 1..<l.count {
        if l[i] < min {
            min = l[i]
        }
    }
    return min
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 0..<l.count {
        sum += l[i]
    }
    return sum
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]
    }
    return sum
}
```swift
// Return maximum element in the array.
// maxElement(l: [1, 2, 3]) == 3
// maxElement(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 123
func maxElement(l: [Int]) -> Int {
    var max = l[0]
    for i in 1..<l.count {
        if l[i] > max {
            max = l[i]
        }
    }
    return max
}

// Return minimum element in the array.
// minElement(l: [1, 2, 3]) == 1
// minElement(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == -10
func minElement(l: [Int]) -> Int {
    var min = l[0]
    for i in 1..<l.count {
        if l[i] < min {
            min = l[i]
        }
    }
    return min
}

// Return the sum of all elements in the array.
// sum(l: [1, 2, 3]) == 6
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 148
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 0..<l.count {
        sum += l[i]
    }
    return sum
}

// Return the sum of all elements in the array, except for the first and last elements.
// sum(l: [1, 2, 3]) == 2
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 148
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]
    }
    return sum
}

// Return the sum of all elements in the array, except for the first and last elements.
// sum(l: [1, 2, 3]) == 2
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 148
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]
    }
    return sum
}

// Return the sum of all elements in the array, except for the first and last elements.
// sum(l: [1, 2, 3]) == 2
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 148
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]
    }
    return sum
}

// Return the sum of all elements in the array, except for the first and last elements.
// sum(l: [1, 2, 3]) == 2
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 148
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]
    }
    return sum
}

// Return the sum of all elements in the array, except for the first and last elements.
// sum(l: [1, 2, 3]) == 2
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 148
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]
    }
    return sum
}

// Return the sum of all elements in the array, except for the first and last elements.
// sum(l: [1, 2, 3
func sum(l: [Int]) -> Int { // invalid redeclaration of 'sum(l:)'

func maxElement(l: [Int]) -> Int {
    var max = l[0]
    for i in 1..<l.count {
        if l[i] > max {
            max = l[i]
        }
    }
    return max
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    return sum
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]
    }
    return sum
}
```swift
// Return maximum element in the array.
// maxElement(l: [1, 2, 3]) == 3
// maxElement(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 123
func maxElement(l: [Int]) -> Int {
    var max = l[0]
    for i in 1..<l.count {
        if l[i] > max {
            max = l[i]
        }
    }
    return max
}

// Return the sum of all elements in the array.
// sum(l: [1, 2, 3]) == 6
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 132
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    return sum
}

// Return the sum of all elements in the array, except for the first and last elements.
// sum(l: [1, 2, 3]) == 2
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 132
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]
    }
    return sum
}

// Return the sum of all elements in the array, except for the first and last elements.
// sum(l: [1, 2, 3]) == 2
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 132
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]
    }
    return sum
}

// Return the sum of all elements in the array, except for the first and last elements.
// sum(l: [1, 2, 3]) == 2
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 132
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]
    }
    return sum
}

// Return the sum of all elements in the array, except for the first and last elements.
// sum(l: [1, 2, 3]) == 2
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 132
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]
    }
    return sum
}

// Return the sum of all elements in the array, except for the first and last elements.
// sum(l: [1, 2, 3]) == 2
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 132
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]
    }
    return sum
}

// Return the sum of all elements in the array, except for the first and last elements.
// sum(l: [1, 2, 3]) == 2
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 132
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 1..<l.count-1 {
        sum += l[i]
    }
    return sum
}

// Return the sum of all elements in the array, except for the first and last elements.
// sum(l: [1, 2, 3]) == 2
// sum(l: [5
func sum(l: [Int]) -> Int { // invalid redeclaration of 'sum(l:)'

func maxElement(l: [Int]) -> Int {
    return l.max()!
}

func minElement(l: [Int]) -> Int {
    return l.min()!
}

func sum(l: [Int]) -> Int {
    return l.reduce(0, +)
}

func avg(l: [Int]) -> Int {
    return sum(l: l) / l.count
}

func product(l: [Int]) -> Int {
    return l.reduce(1, *)
}

func sumAllButFirstAndLast(l: [Int]) -> Int {
    return l.dropFirst().dropLast().reduce(0, +)
}

func productAllButFirstAndLast(l: [Int]) -> Int {
    return l.dropFirst().dropLast().reduce(1, *)
}

func sumAllButFirstAndLastMultipliedBy2(l: [Int]) -> Int {
    return l.dropFirst().dropLast().reduce(0, *) * 2
}

func productAllButFirstAndLastMultipliedBy2(l: [Int]) -> Int {
    return l.dropFirst().dropLast().reduce(1, *) * 2
}
```swift
// Return maximum element in the array.
// maxElement(l: [1, 2, 3]) == 3
// maxElement(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 123
func maxElement(l: [Int]) -> Int {
    return l.max()!
}

// Return minimum element in the array.
// minElement(l: [1, 2, 3]) == 1
// minElement(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == -10
func minElement(l: [Int]) -> Int {
    return l.min()!
}

// Return the sum of all elements in the array.
// sum(l: [1, 2, 3]) == 6
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 128
func sum(l: [Int]) -> Int {
    return l.reduce(0, +)
}

// Return the average of all elements in the array.
// avg(l: [1, 2, 3]) == 2
// avg(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 2
func avg(l: [Int]) -> Int {
    return sum(l: l) / l.count
}

// Return the product of all elements in the array.
// product(l: [1, 2, 3]) == 6
// product(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == -360
func product(l: [Int]) -> Int {
    return l.reduce(1, *)
}

// Return the sum of all elements in the array, except for the first and last elements.
// sumAllButFirstAndLast(l: [1, 2, 3]) == 4
// sumAllButFirstAndLast(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 128
func sumAllButFirstAndLast(l: [Int]) -> Int {
    return l.dropFirst().dropLast().reduce(0, +)
}

// Return the product of all elements in the array, except for the first and last elements.
// productAllButFirstAndLast(l: [1, 2, 3]) == 2
// productAllButFirstAndLast(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == -360
func productAllButFirstAndLast(l: [Int]) -> Int {
    return l.dropFirst().dropLast().reduce(1, *)
}

// Return the sum of all elements in the array, except for the first and last elements,
// and multiplied by 2.
// sumAllButFirstAndLastMultipliedBy2(l: [1, 2, 3]) == 8
// sumAllButFirstAndLastMultipliedBy2(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 128
func sumAllButFirstAndLastMultipliedBy2(l: [Int]) -> Int {
    return l.dropFirst().dropLast().reduce(0, *) * 2
}

// Return the product of all elements in the array, except for the first and last elements,
// and multiplied by 2.
// productAllButFirstAndLastMultipliedBy2(l: [1, 2, 3]) == 4
// productAllButFirstAndLastMultipliedBy2(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == -720
func productAllButFirstAndLastMultipliedBy2(l: [Int]) -> Int {
    return l.dropFirst().dropLast().reduce(1, *) * 2
}

// Return the sum of all elements in the array, except for the first and last elements,
// and multiplied by 2, and divided by 2.
// sumAllButFirstAndLastMultiplied

func maxElement(l: [Int]) -> Int {
  var max = l[0]
  for i in 1..<l.count {
    if l[i] > max {
      max = l[i]
    }
  }
  return max
}

func minElement(l: [Int]) -> Int {
  var min = l[0]
  for i in 1..<l.count {
    if l[i] < min {
      min = l[i]
    }
  }
  return min
}

func sum(l: [Int]) -> Int {
  var sum = 0
  for i in 0..<l.count {
    sum += l[i]
  }
  return sum
}

func avg(l: [Int]) -> Int {
  var sum = 0
  for i in 0..<l.count {
    sum += l[i]
  }
  return sum / l.count
}

func median(l: [Int]) -> Int {
  var sorted = l.sorted()
  var median = 0
  if l.count % 2 == 0 {
    median = (sorted[l.count / 2 - 1] + sorted[l.count / 2]) / 2
  } else {
    median = sorted[l.count / 2]
  }
  return median
}

func mode(l: [Int]) -> Int {
  var mode = 0
  var modeCount = 0
  var count = 0
  for i in 0..<l.count {
    for j in 0..<l.count {
      if l[i] == l[j] {
        count += 1
      }
    }
    if count > modeCount {
      modeCount = count
      mode = l[i]
    }
    count = 0
  }
  return mode
}
```swift
// Return maximum element in the array.
// maxElement(l: [1, 2, 3]) == 3
// maxElement(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 123
func maxElement(l: [Int]) -> Int {
  var max = l[0]
  for i in 1..<l.count {
    if l[i] > max {
      max = l[i]
    }
  }
  return max
}

// Return minimum element in the array.
// minElement(l: [1, 2, 3]) == 1
// minElement(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == -10
func minElement(l: [Int]) -> Int {
  var min = l[0]
  for i in 1..<l.count {
    if l[i] < min {
      min = l[i]
    }
  }
  return min
}

// Return the sum of all elements in the array.
// sum(l: [1, 2, 3]) == 6
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 145
func sum(l: [Int]) -> Int {
  var sum = 0
  for i in 0..<l.count {
    sum += l[i]
  }
  return sum
}

// Return the average of all elements in the array.
// avg(l: [1, 2, 3]) == 2
// avg(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 1
func avg(l: [Int]) -> Int {
  var sum = 0
  for i in 0..<l.count {
    sum += l[i]
  }
  return sum / l.count
}

// Return the median of all elements in the array.
// median(l: [1, 2, 3]) == 2
// median(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 3
func median(l: [Int]) -> Int {
  var sorted = l.sorted()
  var median = 0
  if l.count % 2 == 0 {
    median = (sorted[l.count / 2 - 1] + sorted[l.count / 2]) / 2
  } else {
    median = sorted[l.count / 2]
  }
  return median
}

// Return the mode of all elements in the array.
// mode(l: [1, 2, 3]) == 1
// mode(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == -3
func mode(l: [Int]) -> Int {
  var mode = 0
  var modeCount = 0
  var count = 0
  for i in 0..<l.count {
    for j in 0..<l.count {
      if l[i] == l[j] {
        count += 1
      }
    }
    if count > modeCount {
      modeCount = count
      mode = l[i]
    }
    count = 0
  }
  return mode
}

// Return the mode of all elements in the array.
// mode(l: [1, 2, 3]) == 1
// mode(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == -3
func mode(l: [Int]) -> Int {
  var mode = 0
  var modeCount = 0
  var count = 0
  for i in 0..<l.count {
    for j in 0..<l.count {
      if l[i] == l[j] {
        count += 1
      }
    }
    if count > modeCount {
      modeCount = count
      mode = l[i]
    }
    count = 0
  }
  return mode
}

// Return the mode of all elements in the array.
var sorted = l.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constant

func maxElement(l: [Int]) -> Int {
    var max = l[0]
    for i in 1..<l.count {
        if l[i] > max {
            max = l[i]
        }
    }
    return max
}

func minElement(l: [Int]) -> Int {
    var min = l[0]
    for i in 1..<l.count {
        if l[i] < min {
            min = l[i]
        }
    }
    return min
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 0..<l.count {
        sum += l[i]
    }
    return sum
}

func product(l: [Int]) -> Int {
    var product = 1
    for i in 0..<l.count {
        product *= l[i]
    }
    return product
}

func average(l: [Int]) -> Int {
    var sum = 0
    for i in 0..<l.count {
        sum += l[i]
    }
    return sum / l.count
}

func median(l: [Int]) -> Int {
    var sorted = l.sorted()
    var median = 0
    if sorted.count % 2 == 0 {
        median = (sorted[sorted.count / 2] + sorted[sorted.count / 2 - 1]) / 2
    } else {
        median = sorted[sorted.count / 2]
    }
    return median
}

func mode(l: [Int]) -> Int {
    var mode = 0
    var count = 0
    for i in 0..<l.count {
        var currentCount = 0
        for j in 0..<l.count {
            if l[i] == l[j] {
                currentCount += 1
            }
        }
        if currentCount > count {
            count = currentCount
            mode = l[i]
        }
    }
    return mode
}
```swift
// Return maximum element in the array.
// maxElement(l: [1, 2, 3]) == 3
// maxElement(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 123
func maxElement(l: [Int]) -> Int {
    var max = l[0]
    for i in 1..<l.count {
        if l[i] > max {
            max = l[i]
        }
    }
    return max
}

// Return minimum element in the array.
// minElement(l: [1, 2, 3]) == 1
// minElement(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == -10
func minElement(l: [Int]) -> Int {
    var min = l[0]
    for i in 1..<l.count {
        if l[i] < min {
            min = l[i]
        }
    }
    return min
}

// Return the sum of all elements in the array.
// sum(l: [1, 2, 3]) == 6
// sum(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 146
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in 0..<l.count {
        sum += l[i]
    }
    return sum
}

// Return the product of all elements in the array.
// product(l: [1, 2, 3]) == 6
// product(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == -360
func product(l: [Int]) -> Int {
    var product = 1
    for i in 0..<l.count {
        product *= l[i]
    }
    return product
}

// Return the average of all elements in the array.
// average(l: [1, 2, 3]) == 2
// average(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 1
func average(l: [Int]) -> Int {
    var sum = 0
    for i in 0..<l.count {
        sum += l[i]
    }
    return sum / l.count
}

// Return the median of all elements in the array.
// median(l: [1, 2, 3]) == 2
// median(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 3
func median(l: [Int]) -> Int {
    var sorted = l.sorted()
    var median = 0
    if sorted.count % 2 == 0 {
        median = (sorted[sorted.count / 2] + sorted[sorted.count / 2 - 1]) / 2
    } else {
        median = sorted[sorted.count / 2]
    }
    return median
}

// Return the mode of all elements in the array.
// mode(l: [1, 2, 3]) == 1
// mode(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == -3
func mode(l: [Int]) -> Int {
    var mode = 0
    var count = 0
    for i in 0..<l.count {
        var currentCount = 0
        for j in 0..<l.count {
            if l[i] == l[j] {
                currentCount += 1
            }
        }
        if currentCount > count {
            count = currentCount
            mode = l[i]
        }
    }
    return mode
}

// Return the range of all elements in the array.
// range(l: [1, 2, 3]) == 2
// range(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 123
func range(l: [Int]) -> Int {
    
var sorted = l.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constant

func fizzBuzz(n: Int) -> Int {
    var count = 0
    for i in 1...n {
        if i % 11 == 0 || i % 13 == 0 {
            count += 1
        }
    }
    return count
}
```swift
// Return the number of times the digit 7 appears in integers less than n which are divisible by 11 or 13.
// fizzBuzz(n: 50) == 0
// fizzBuzz(n: 78) == 2
// fizzBuzz(n: 79) == 3
func fizzBuzz(n: Int) -> Int {
    var count = 0
    for i in 1...n {
        if i % 11 == 0 || i % 13 == 0 {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func fizzBuzz(n: Int) -> Int {
    var count = 0
    for i in 0..<n {
        if i % 11 == 0 || i % 13 == 0 {
            count += 1
        }
    }
    return count
}
```swift
// Return the number of times the digit 7 appears in integers less than n which are divisible by 11 or 13.
// fizzBuzz(n: 50) == 0
// fizzBuzz(n: 78) == 2
// fizzBuzz(n: 79) == 3
func fizzBuzz(n: Int) -> Int {
    var count = 0
    for i in 0..<n {
        if i % 11 == 0 || i % 13 == 0 {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func fizzBuzz(n: Int) -> Int {
    var count = 0
    for i in 0..<n {
        if i % 11 == 0 || i % 13 == 0 {
            count += 1
        }
    }
    return count
}

func longestSubstring(str: String) -> Int {
    var longest = 0
    var current = 0
    var last = 0
    var lastChar = ""
    for char in str {
        if char == lastChar {
            current += 1
        } else {
            if current > longest {
                longest = current
            }
            current = 1
            lastChar = char
        }
    }
    if current > longest {
        longest = current
    }
    return longest
}

func count13(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num == 13 {
            count += 1
        }
    }
    return count
}
```swift
// Return the number of times the digit 7 appears in integers less than n which are divisible by 11 or 13.
// fizzBuzz(n: 50) == 0
// fizzBuzz(n: 78) == 2
// fizzBuzz(n: 79) == 3
func fizzBuzz(n: Int) -> Int {
    var count = 0
    for i in 0..<n {
        if i % 11 == 0 || i % 13 == 0 {
            count += 1
        }
    }
    return count
}

// Given a string, return the length of the longest substring that appears at least twice.
// longestSubstring("abca") == 2
// longestSubstring("abc") == 1
// longestSubstring("abcabcabcabc") == 4
func longestSubstring(str: String) -> Int {
    var longest = 0
    var current = 0
    var last = 0
    var lastChar = ""
    for char in str {
        if char == lastChar {
            current += 1
        } else {
            if current > longest {
                longest = current
            }
            current = 1
            lastChar = char
        }
    }
    if current > longest {
        longest = current
    }
    return longest
}

// Given an array of integers, return the number of times the value 13 appears in the array.
// count13([1, 13, 13]) == 2
// count13([1, 13, 3]) == 1
// count13([1, 13, 13, 13]) == 2
// count13([13, 13, 2]) == 1
func count13(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num == 13 {
            count += 1
        }
    }
    return count
}

// Given an array of integers, return the number of times the value 13 appears in the array.
// count13([1, 13, 13]) == 2
// count13([1, 13, 3]) == 1
// count13([1, 13, 13, 13]) == 2
// count13([13, 13, 2]) == 1
func count13(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num == 13 {
            count += 1
        }
    }
    return count
}

// Given an array of integers, return the number of times the value 13 appears in the array.
// count13([1, 13, 13]) == 2
// count13([1, 13, 3]) == 1
// count13([1, 13, 13, 13]) == 2
// count13([13, 13, 2]) == 1
func count13(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num == 13 {
            count += 1
        }
    }
    return count
}

// Given an array of integers, return the number of times the value 13 appears in the array.
// count13([1, 13, 13]) == 2
// count13([1, 13, 3]) == 1
// count13([1, 13, 13, 13]) == 2
// count13([13, 13, 2]) == 1
func count13(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num == 13 {
            count += 1
        }
    }
    return count
}

// Given an array of integers, return the number of times the value 13 appears in the array.
// count13([1, 13, 13]) == 2
// count13([1, 13, 3]) == 1
// count13([1, 13, 13, 13]) == 2
// count13([13, 13, 2]) == 1
func count13(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num == 13 {
            count += 1
        }
    }
    return count
}

// Given an array of integers, return
if char == lastChar { // binary operator '==' cannot be applied to operands of type 'Character' and 'String'
lastChar = char // cannot assign value of type 'Character' to type 'String'

func fizzBuzz(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i % 11 == 0 || i % 13 == 0 {
      count += 1
    }
  }
  return count
}
```swift
// Return the number of times the digit 7 appears in integers less than n which are divisible by 11 or 13.
// fizzBuzz(n: 50) == 0
// fizzBuzz(n: 78) == 2
// fizzBuzz(n: 79) == 3
func fizzBuzz(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i % 11 == 0 || i % 13 == 0 {
      count += 1
    }
  }
  return count
}
<|file_separator|>
 // XCTAssertTrue failed

func fizzBuzz(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i % 11 == 0 || i % 13 == 0 {
      count += 1
    }
  }
  return count
}
```swift
// Return the number of times the digit 7 appears in integers less than n which are divisible by 11 or 13.
// fizzBuzz(n: 50) == 0
// fizzBuzz(n: 78) == 2
// fizzBuzz(n: 79) == 3
func fizzBuzz(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i % 11 == 0 || i % 13 == 0 {
      count += 1
    }
  }
  return count
}
<|file_separator|>
 // XCTAssertTrue failed

func fizzBuzz(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i % 11 == 0 || i % 13 == 0 {
      count += 1
    }
  }
  return count
}
```swift
// Return the number of times the digit 7 appears in integers less than n which are divisible by 11 or 13.
// fizzBuzz(n: 50) == 0
// fizzBuzz(n: 78) == 2
// fizzBuzz(n: 79) == 3
func fizzBuzz(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i % 11 == 0 || i % 13 == 0 {
      count += 1
    }
  }
  return count
}
<|file_separator|>
 // XCTAssertTrue failed

func fizzBuzz(n: Int) -> Int {
    var count = 0
    for i in 1...n {
        if i % 11 == 0 || i % 13 == 0 {
            count += 1
        }
    }
    return count
}
```swift
// Return the number of times the digit 7 appears in integers less than n which are divisible by 11 or 13.
// fizzBuzz(n: 50) == 0
// fizzBuzz(n: 78) == 2
// fizzBuzz(n: 79) == 3
func fizzBuzz(n: Int) -> Int {
    var count = 0
    for i in 1...n {
        if i % 11 == 0 || i % 13 == 0 {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func fizzBuzz(n: Int) -> Int {
    var count = 0
    for i in 1...n {
        if i % 11 == 0 || i % 13 == 0 {
            count += 1
        }
    }
    return count
}
```swift
// Return the number of times the digit 7 appears in integers less than n which are divisible by 11 or 13.
// fizzBuzz(n: 50) == 0
// fizzBuzz(n: 78) == 2
// fizzBuzz(n: 79) == 3
func fizzBuzz(n: Int) -> Int {
    var count = 0
    for i in 1...n {
        if i % 11 == 0 || i % 13 == 0 {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func fizzBuzz(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i % 11 == 0 || i % 13 == 0 {
      count += 1
    }
  }
  return count
}
```swift
// Return the number of times the digit 7 appears in integers less than n which are divisible by 11 or 13.
// fizzBuzz(n: 50) == 0
// fizzBuzz(n: 78) == 2
// fizzBuzz(n: 79) == 3
func fizzBuzz(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i % 11 == 0 || i % 13 == 0 {
      count += 1
    }
  }
  return count
}
<|file_separator|>
 // XCTAssertTrue failed

func fizzBuzz(n: Int) -> Int {
    var count = 0
    for i in 1...n {
        if i % 11 == 0 || i % 13 == 0 {
            count += 1
        }
    }
    return count
}
```swift
// Return the number of times the digit 7 appears in integers less than n which are divisible by 11 or 13.
// fizzBuzz(n: 50) == 0
// fizzBuzz(n: 78) == 2
// fizzBuzz(n: 79) == 3
func fizzBuzz(n: Int) -> Int {
    var count = 0
    for i in 1...n {
        if i % 11 == 0 || i % 13 == 0 {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func sortEven(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 2 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i - 1]
        }
    }
    return l
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 2 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i - 1]
        }
    }
    return l
}
<|file_separator|>
 // XCTAssertTrue failed

func sortEven(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 2 == 0 {
            l[i] = l[i + 1]
        }
    }
    return l
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 2 == 0 {
            l[i] = l[i + 1]
        }
    }
    return l
}

// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 2 == 0 {
            l[i] = l[i + 1]
        }
    }
    return l
}

// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 2 == 0 {
            l[i] = l[i + 1]
        }
    }
    return l
}

// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 2 == 0 {
            l[i] = l[i + 1]
        }
    }
    return l
}

// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 2 == 0 {
            l[i] = l[i + 1]
        }
    }
    return l
}

// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 2 == 0 {
            l[i] = l[i + 1]
        }
    }
    return l
}

// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indic
 // Fatal error: Index out of range

func sortEven(l: [Int]) -> [Int] {
  var l = l
  for i in 0..<l.count {
    if i % 2 == 0 {
      l[i] = l[i + 1]
    }
  }
  l.sort()
  return l
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
  var l = l
  for i in 0..<l.count {
    if i % 2 == 0 {
      l[i] = l[i + 1]
    }
  }
  l.sort()
  return l
}
<|file_separator|>
 // Fatal error: Index out of range

func sortEven(l: [Int]) -> [Int] {
  var l = l
  var i = 0
  while i < l.count {
    if i % 2 == 0 {
      l[i] = l[i + 1]
    }
    i += 1
  }
  l.sort()
  return l
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
  var l = l
  var i = 0
  while i < l.count {
    if i % 2 == 0 {
      l[i] = l[i + 1]
    }
    i += 1
  }
  l.sort()
  return l
}
<|file_separator|>
 // Fatal error: Index out of range

func sortEven(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 2 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i]
        }
    }
    return l
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 2 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i]
        }
    }
    return l
}
<|file_separator|>
 // XCTAssertTrue failed

func sortEven(l: [Int]) -> [Int] {
  var l = l
  for i in 0..<l.count {
    if i % 2 == 0 {
      l[i] = l[i]
    } else {
      l[i] = l[i - 1]
    }
  }
  return l
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
  var l = l
  for i in 0..<l.count {
    if i % 2 == 0 {
      l[i] = l[i]
    } else {
      l[i] = l[i - 1]
    }
  }
  return l
}

// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
  var l = l
  for i in 0..<l.count {
    if i % 2 == 0 {
      l[i] = l[i]
    } else {
      l[i] = l[i - 1]
    }
  }
  return l
}

// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
  var l = l
  for i in 0..<l.count {
    if i % 2 == 0 {
      l[i] = l[i]
    } else {
      l[i] = l[i - 1]
    }
  }
  return l
}

// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
  var l = l
  for i in 0..<l.count {
    if i % 2 == 0 {
      l[i] = l[i]
    } else {
      l[i] = l[i - 1]
    }
  }
  return l
}

// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
  var l = l
  for i in 0..<l.count {
    if i % 2 == 0 {
      l[i] = l[i]
    } else {
      l[i] = l[i - 1]
    }
  }
  return l
}

// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
  var l = l
  for i in 0..<l.count {
    if i % 
 // XCTAssertTrue failed

func sortEven(l: [Int]) -> [Int] {
    // TODO: Implement this function
    return []
}

func sortOdd(l: [Int]) -> [Int] {
    // TODO: Implement this function
    return []
}

func sort(l: [Int]) -> [Int] {
    // TODO: Implement this function
    return []
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
    // TODO: Implement this function
    return []
}

// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortOdd(l: [Int]) -> [Int] {
    // TODO: Implement this function
    return []
}

// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sort(l: [Int]) -> [Int] {
    // TODO: Implement this function
    return []
}

// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sort(l: [Int]) -> [Int] {
    // TODO: Implement this function
    return []
}

// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sort(l: [Int]) -> [Int] {
    // TODO: Implement this function
    return []
}

// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sort(l: [Int]) -> [Int] {
    // TODO: Implement this function
    return []
}

// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sort(l: [Int]) -> [Int] {
    // TODO: Implement this function
    return []
}

// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sort(l: [Int]) -> [Int] {
    // TODO: Implement this function
    return []
}

// This function takes an array l and returns an array l' such
 // XCTAssertTrue failed

func sortEven(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 2 == 0 {
            l[i] = l[i + 1]
        }
    }
    return l
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 2 == 0 {
            l[i] = l[i + 1]
        }
    }
    return l
}
<|file_separator|>
 // Fatal error: Index out of range

func sortEven(l: [Int]) -> [Int] {
  var l = l
  var i = 0
  while i < l.count {
    if i % 2 == 0 {
      l[i] = l[i + 1]
    }
    i += 1
  }
  l.sort()
  return l
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
  var l = l
  var i = 0
  while i < l.count {
    if i % 2 == 0 {
      l[i] = l[i + 1]
    }
    i += 1
  }
  l.sort()
  return l
}
<|file_separator|>
 // Fatal error: Index out of range

func sortEven(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 2 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i + 1]
        }
    }
    return l
}
```swift
// This function takes an array l and returns an array l' such that
// l' is identical to l in the odd indicies, while its values at the even indicies are equal
// to the values of the even indicies of l, but sorted.
// sortEven(l: [1, 2, 3]) == [1, 2, 3]
// sortEven(l: [5, 6, 3, 4]) == [3, 6, 5, 4]
func sortEven(l: [Int]) -> [Int] {
    var l = l
    for i in 0..<l.count {
        if i % 2 == 0 {
            l[i] = l[i]
        } else {
            l[i] = l[i + 1]
        }
    }
    return l
}
<|file_separator|>
 // XCTAssertTrue failed

func primeFib(n: Int) -> Int {
    var a = 2
    var b = 3
    var c = 5
    var i = 4
    while i < n {
        let d = a + b
        if isPrime(d) {
            c = d
        }
        a = b
        b = c
        i += 1
    }
    return c
}

func isPrime(n: Int) -> Bool {
    if n < 2 {
        return false
    }
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    var i = 3
    while i * i <= n {
        if n % i == 0 {
            return false
        }
        i += 2
    }
    return true
}
```swift
// prime_fib returns n-th number that is a Fibonacci number and it's also prime.
// primeFib(n: 1) == 2
// primeFib(n: 2) == 3
// primeFib(n: 3) == 5
// primeFib(n: 4) == 13
// primeFib(n: 5) == 89
func primeFib(n: Int) -> Int {
    var a = 2
    var b = 3
    var c = 5
    var i = 4
    while i < n {
        let d = a + b
        if isPrime(d) {
            c = d
        }
        a = b
        b = c
        i += 1
    }
    return c
}

// isPrime returns true if n is a prime number.
func isPrime(n: Int) -> Bool {
    if n < 2 {
        return false
    }
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    var i = 3
    while i * i <= n {
        if n % i == 0 {
            return false
        }
        i += 2
    }
    return true
}

// isPrime returns true if n is a prime number.
func isPrime(n: Int) -> Bool {
    if n < 2 {
        return false
    }
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    var i = 3
    while i * i <= n {
        if n % i == 0 {
            return false
        }
        i += 2
    }
    return true
}

// isPrime returns true if n is a prime number.
func isPrime(n: Int) -> Bool {
    if n < 2 {
        return false
    }
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    var i = 3
    while i * i <= n {
        if n % i == 0 {
            return false
        }
        i += 2
    }
    return true
}

// isPrime returns true if n is a prime number.
func isPrime(n: Int) -> Bool {
    if n < 2 {
        return false
    }
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    var i = 3
    while i * i <= n {
        if n % i == 0 {
            return false
        }
        i += 2
    }
    return true
}

// isPrime returns true if n is a prime number.
func isPrime(n: Int) -> Bool {
    if n < 2 {
        return false
    }
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    var i = 3
    while i * i <= n {
        if n % i == 0 {
            return false
        }
        i += 2
    }
    return true
}

// isPrime returns true if n is a prime number.
func isPrime(n: Int) -> Bool {
    if n < 2 {
        return false
    }
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    var i = 3
    while i * i <= n {
        if n % i == 0 {
            return false
        }
        i += 2
    }
    return true
}

// isPrime returns true if n is a prime number.
func isPrime(n: Int) -> Bool {
    if n < 2 {
        return false
    }
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    var i = 3
    while i * i <= n {
        if n % i == 0 {
            return false
        }
        i += 2
    }
    return true
}

// isPrime returns true if n is a prime number.
func isPrime(n: Int) -> Bool {
    if n < 2 {
        return false
    }
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    var i = 3
    while i * i <= n {
        if
if isPrime(d) { // missing argument label 'n:' in call

func primeFib(n: Int) -> Int {
  var a = 2
  var b = 3
  var c = 5
  var i = 3
  while i < n {
    let d = a + b
    if isPrime(d) {
      c = d
    }
    a = b
    b = c
    i += 1
  }
  return c
}

func isPrime(n: Int) -> Bool {
  if n == 2 {
    return true
  }
  if n % 2 == 0 {
    return false
  }
  var i = 3
  while i * i <= n {
    if n % i == 0 {
      return false
    }
    i += 2
  }
  return true
}
```swift
// prime_fib returns n-th number that is a Fibonacci number and it's also prime.
// primeFib(n: 1) == 2
// primeFib(n: 2) == 3
// primeFib(n: 3) == 5
// primeFib(n: 4) == 13
// primeFib(n: 5) == 89
func primeFib(n: Int) -> Int {
  var a = 2
  var b = 3
  var c = 5
  var i = 3
  while i < n {
    let d = a + b
    if isPrime(d) {
      c = d
    }
    a = b
    b = c
    i += 1
  }
  return c
}

// isPrime returns true if n is a prime number.
// isPrime(n: 2) == true
// isPrime(n: 3) == true
// isPrime(n: 4) == false
// isPrime(n: 5) == true
// isPrime(n: 6) == false
func isPrime(n: Int) -> Bool {
  if n == 2 {
    return true
  }
  if n % 2 == 0 {
    return false
  }
  var i = 3
  while i * i <= n {
    if n % i == 0 {
      return false
    }
    i += 2
  }
  return true
}
<|file_separator|>
if isPrime(d) { // missing argument label 'n:' in call

func primeFib(n: Int) -> Int {
    var a = 1
    var b = 1
    var c = 0
    var i = 0
    while i < n {
        c = a + b
        a = b
        b = c
        if isPrime(c) {
            i += 1
        }
    }
    return c
}

func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

func isPrime2(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...n {
        if n % i == 0 {
            return false
        }
    }
    return true
}

func isPrime3(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

func isPrime4(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

func isPrime5(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

func isPrime6(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

func isPrime7(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

func isPrime8(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

func isPrime9(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}
```swift
// prime_fib returns n-th number that is a Fibonacci number and it's also prime.
// primeFib(n: 1) == 2
// primeFib(n: 2) == 3
// primeFib(n: 3) == 5
// primeFib(n: 4) == 13
// primeFib(n: 5) == 89
func primeFib(n: Int) -> Int {
    var a = 1
    var b = 1
    var c = 0
    var i = 0
    while i < n {
        c = a + b
        a = b
        b = c
        if isPrime(c) {
            i += 1
        }
    }
    return c
}

// isPrime returns true if n is a prime number.
func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// isPrime2 returns true if n is a prime number.
func isPrime2(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...n {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// isPrime3 returns true if n is a prime number.
func isPrime3(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// isPrime4 returns true if n is a prime number.
func isPrime4(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// isPrime5 returns true if n is a prime number.
func isPrime5(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// isPrime6 returns true if n is a prime number.
func isPrime6(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// isPrime7 returns true if n is a prime number.
func isPrime7(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// isPrime8 returns true if n is a prime number.
func isPrime8(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// isPrime9 returns true if n is a prime number.
func isPrime9(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// isPrime10 returns true if n is a prime number.
func isPrime10(n: Int) ->
if isPrime(c) { // missing argument label 'n:' in call

func primeFib(n: Int) -> Int {
    var a = 1
    var b = 1
    var c = 0
    var i = 0
    while i < n {
        if isPrime(n: c) {
            i += 1
        }
        c = a + b
        a = b
        b = c
    }
    return c
}

func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}
```swift
// prime_fib returns n-th number that is a Fibonacci number and it's also prime.
// primeFib(n: 1) == 2
// primeFib(n: 2) == 3
// primeFib(n: 3) == 5
// primeFib(n: 4) == 13
// primeFib(n: 5) == 89
func primeFib(n: Int) -> Int {
    var a = 1
    var b = 1
    var c = 0
    var i = 0
    while i < n {
        if isPrime(n: c) {
            i += 1
        }
        c = a + b
        a = b
        b = c
    }
    return c
}

// isPrime returns true if n is a prime number.
// isPrime(n: 2) == true
// isPrime(n: 3) == true
// isPrime(n: 4) == false
// isPrime(n: 5) == true
func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// isPrime returns true if n is a prime number.
// isPrime(n: 2) == true
// isPrime(n: 3) == true
// isPrime(n: 4) == false
// isPrime(n: 5) == true
func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// isPrime returns true if n is a prime number.
// isPrime(n: 2) == true
// isPrime(n: 3) == true
// isPrime(n: 4) == false
// isPrime(n: 5) == true
func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// isPrime returns true if n is a prime number.
// isPrime(n: 2) == true
// isPrime(n: 3) == true
// isPrime(n: 4) == false
// isPrime(n: 5) == true
func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// isPrime returns true if n is a prime number.
// isPrime(n: 2) == true
// isPrime(n: 3) == true
// isPrime(n: 4) == false
// isPrime(n: 5) == true
func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// isPrime returns true if n is a prime number.
// isPrime(n: 2) == true
// isPrime(n: 3) == true
// isPrime(n: 4) == false
// isPrime(n: 5) == true
func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// isPrime returns true if n is a prime number.
// isPrime(n: 2) == true
// isPrime(n: 3) == true
// isPrime(n: 4) == false
 // XCTAssertTrue failed

func primeFib(n: Int) -> Int {
    var a = 1
    var b = 1
    var c = 0
    var i = 0
    while i < n {
        if isPrime(a) {
            c = a
        }
        a = b
        b = c + b
        i += 1
    }
    return c
}

func isPrime(n: Int) -> Bool {
    if n <= 1 {
        return false
    }
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    var i = 3
    while i * i <= n {
        if n % i == 0 {
            return false
        }
        i += 2
    }
    return true
}

func isPalindrome(s: String) -> Bool {
    var i = 0
    var j = s.count - 1
    while i < j {
        if s[i] != s[j] {
            return false
        }
        i += 1
        j -= 1
    }
    return true
}
```swift
// prime_fib returns n-th number that is a Fibonacci number and it's also prime.
// primeFib(n: 1) == 2
// primeFib(n: 2) == 3
// primeFib(n: 3) == 5
// primeFib(n: 4) == 13
// primeFib(n: 5) == 89
func primeFib(n: Int) -> Int {
    var a = 1
    var b = 1
    var c = 0
    var i = 0
    while i < n {
        if isPrime(a) {
            c = a
        }
        a = b
        b = c + b
        i += 1
    }
    return c
}

// isPrime returns true if n is a prime number.
// isPrime(n: 2) == true
// isPrime(n: 3) == true
// isPrime(n: 4) == false
// isPrime(n: 5) == true
func isPrime(n: Int) -> Bool {
    if n <= 1 {
        return false
    }
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    var i = 3
    while i * i <= n {
        if n % i == 0 {
            return false
        }
        i += 2
    }
    return true
}

// isPalindrome returns true if s is a palindrome.
// isPalindrome(s: "racecar") == true
// isPalindrome(s: "racecar") == true
// isPalindrome(s: "racecar") == true
func isPalindrome(s: String) -> Bool {
    var i = 0
    var j = s.count - 1
    while i < j {
        if s[i] != s[j] {
            return false
        }
        i += 1
        j -= 1
    }
    return true
}

// isPalindrome returns true if s is a palindrome.
// isPalindrome(s: "racecar") == true
// isPalindrome(s: "racecar") == true
// isPalindrome(s: "racecar") == true
func isPalindrome(s: String) -> Bool {
    var i = 0
    var j = s.count - 1
    while i < j {
        if s[i] != s[j] {
            return false
        }
        i += 1
        j -= 1
    }
    return true
}

// isPalindrome returns true if s is a palindrome.
// isPalindrome(s: "racecar") == true
// isPalindrome(s: "racecar") == true
// isPalindrome(s: "racecar") == true
func isPalindrome(s: String) -> Bool {
    var i = 0
    var j = s.count - 1
    while i < j {
        if s[i] != s[j] {
            return false
        }
        i += 1
        j -= 1
    }
    return true
}

// isPalindrome returns true if s is a palindrome.
// isPalindrome(s: "racecar") == true
// isPalindrome(s: "racecar") == true
// isPalindrome(s: "racecar") == true
func isPalindrome(s: String) -> Bool {
    var i = 0
    var j = s.count - 1
    while i < j {
        if s[i] != s[j] {
            return false
        }
        i += 1
        j -= 1
    }
    return true
}

// isPalindrome returns true if s is a palindrome.
// isPalindrome(s: "racecar") == true
// isPalindrome(s: "racecar") == true
// isPalindrome(s: "racecar") == true
func isPalindrome(s: String) -> Bool {
    var i = 0
    var j = s.count - 1
    while i < j {
        if s[i] != s[j] {
            return false
        }
        i += 1
        j -= 1
    }
    return true
}

// isPalindrome returns true if s is a palindrome.
// isPalindrome(s: "racecar") == true
// isPalindrome(s: "racecar") == true
// isPalindrome(s: "racecar") == true
func isPalindrome(s: String) -> Bool {
    var i = 0
    var j = s.count - 1
    while i < j {
        if s[i] != s[j] {
            return false
        }
        i += 1
        j -= 1
    }
    return true
}

//
if isPrime(a) { // missing argument label 'n:' in call
if s[i] != s[j] { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if s[i] != s[j] { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func primeFib(n: Int) -> Int {
  var a = 2
  var b = 3
  var c = 5
  var i = 4
  while i < n {
    let d = a + b
    if d % 2 == 0 {
      d += 1
    }
    if d % 5 == 0 {
      d += 2
    }
    a = b
    b = c
    c = d
    i += 1
  }
  return c
}

func primeFib2(n: Int) -> Int {
  var a = 2
  var b = 3
  var c = 5
  var i = 4
  while i < n {
    let d = a + b
    if d % 2 == 0 {
      d += 1
    }
    if d % 5 == 0 {
      d += 2
    }
    a = b
    b = c
    c = d
    i += 1
  }
  return c
}

func primeFib3(n: Int) -> Int {
  var a = 2
  var b = 3
  var c = 5
  var i = 4
  while i < n {
    let d = a + b
    if d % 2 == 0 {
      d += 1
    }
    if d % 5 == 0 {
      d += 2
    }
    a = b
    b = c
    c = d
    i += 1
  }
  return c
}

func primeFib4(n: Int) -> Int {
  var a = 2
  var b = 3
  var c = 5
  var i = 4
  while i < n {
    let d = a + b
    if d % 2 == 0 {
      d += 1
    }
    if d % 5 == 0 {
      d += 2
    }
    a = b
    b = c
    c = d
    i += 1
  }
  return c
}

func primeFib5(n: Int) -> Int {
  var a = 2
  var b = 3
  var c = 5
  var i = 4
  while i < n {
    let d = a + b
    if d % 2 == 0 {
      d += 1
    }
    if d % 5 == 0 {
      d += 2
    }
    a = b
    b = c
    c = d
    i += 1
  }
  return c
}
```swift
// prime_fib returns n-th number that is a Fibonacci number and it's also prime.
// primeFib(n: 1) == 2
// primeFib(n: 2) == 3
// primeFib(n: 3) == 5
// primeFib(n: 4) == 13
// primeFib(n: 5) == 89
func primeFib(n: Int) -> Int {
  var a = 2
  var b = 3
  var c = 5
  var i = 4
  while i < n {
    let d = a + b
    if d % 2 == 0 {
      d += 1
    }
    if d % 5 == 0 {
      d += 2
    }
    a = b
    b = c
    c = d
    i += 1
  }
  return c
}

// prime_fib_2 returns n-th number that is a Fibonacci number and it's also prime.
// primeFib2(n: 1) == 2
// primeFib2(n: 2) == 3
// primeFib2(n: 3) == 5
// primeFib2(n: 4) == 13
// primeFib2(n: 5) == 89
func primeFib2(n: Int) -> Int {
  var a = 2
  var b = 3
  var c = 5
  var i = 4
  while i < n {
    let d = a + b
    if d % 2 == 0 {
      d += 1
    }
    if d % 5 == 0 {
      d += 2
    }
    a = b
    b = c
    c = d
    i += 1
  }
  return c
}

// prime_fib_3 returns n-th number that is a Fibonacci number and it's also prime.
// primeFib3(n: 1) == 2
// primeFib3(n: 2) == 3
// primeFib3(n: 3) == 5
// primeFib3(n: 4) == 13
// primeFib3(n: 5) == 89
func primeFib3(n: Int) -> Int {
  var a = 2
  var b = 3
  var c = 5
  var i = 4
  while i < n {
    let d = a + b
    if d % 2 == 0 {
      d += 1
    }
    if d % 5 == 0 {
      d += 2
    }
    a = b
    b = c
    c = d
    i += 1
  }
  return c
}

// prime_fib_4 returns n-th number that is a Fibonacci number and it's also prime.
// primeFib4(n: 1) == 2
// primeFib4(n: 2) == 3
// primeFib4(n: 3) == 5
// primeFib4(n: 4) == 13
// primeFib4(n: 5) == 89
func primeFib4(n: Int) -> Int {
  var a = 2
  var b = 3
  var c = 5
  var i = 4
  while i < n {
    let d = a + b
    if d % 2 == 0 {
      d += 1
    }
    if d % 5 == 0 {
      d += 2
    }
    a = b
    b = c
    c = d
    i += 1
  }
  return c
}

// prime_fib_5 returns n-th number that is a Fibonacci number and it's also prime.
// primeFib5(n: 1) == 2
// primeFib5(n: 2) == 3
// primeFib5(n: 3) == 5
// primeFib5(n: 4) == 13
// primeFib5(n: 5) == 89
func primeFib5(n: Int) -> Int {
  var a = 2
  var b = 3
  var c = 5
  var i = 4
  while i < n {
    let d = a + b
    if d % 2 == 0 {
      d += 1
    }
    if d % 5 == 0 {
      d += 2
    }
    a = b
    b = c
    c = d
    i += 1
  }
  return c
}

// prime_fib_6 returns n-th number that is a Fibonacci number and it's also prime
d += 1 // left side of mutating operator isn't mutable: 'd' is a 'let' constant
d += 2 // left side of mutating operator isn't mutable: 'd' is a 'let' constant
d += 1 // left side of mutating operator isn't mutable: 'd' is a 'let' constant
d += 2 // left side of mutating operator isn't mutable: 'd' is a 'let' constant
d += 1 // left side of mutating operator isn't mutable: 'd' is a 'let' constant
d += 2 // left side of mutating operator isn't mutable: 'd' is a 'let' constant
d += 1 // left side of mutating operator isn't mutable: 'd' is a 'let' constant
d += 2 // left side of mutating operator isn't mutable: 'd' is a 'let' constant
d += 1 // left side of mutating operator isn't mutable: 'd' is a 'let' constant
d += 2 // left side of mutating operator isn't mutable: 'd' is a 'let' constant

func primeFib(n: Int) -> Int {
    var n1 = 2
    var n2 = 3
    var n3 = 5
    var n4 = 13
    var n5 = 89
    var i = 5
    while i < n {
        let n6 = n1 + n2
        n1 = n2
        n2 = n3
        n3 = n4
        n4 = n5
        n5 = n6
        i += 1
    }
    return n5
}

func primeFibPrime(n: Int) -> Int {
    var n1 = 2
    var n2 = 3
    var n3 = 5
    var n4 = 13
    var n5 = 89
    var i = 5
    while i < n {
        let n6 = n1 + n2
        n1 = n2
        n2 = n3
        n3 = n4
        n4 = n5
        n5 = n6
        if isPrime(n5) {
            return n5
        }
        i += 1
    }
    return n5
}

func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n == 3 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    if n % 3 == 0 {
        return false
    }
    var i = 5
    while i * i <= n {
        if n % i == 0 {
            return false
        }
        i += 2
    }
    return true
}

func isPrimePrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n == 3 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    if n % 3 == 0 {
        return false
    }
    var i = 5
    while i * i <= n {
        if n % i == 0 {
            return false
        }
        i += 2
    }
    return true
}
```swift
// prime_fib returns n-th number that is a Fibonacci number and it's also prime.
// primeFib(n: 1) == 2
// primeFib(n: 2) == 3
// primeFib(n: 3) == 5
// primeFib(n: 4) == 13
// primeFib(n: 5) == 89
func primeFib(n: Int) -> Int {
    var n1 = 2
    var n2 = 3
    var n3 = 5
    var n4 = 13
    var n5 = 89
    var i = 5
    while i < n {
        let n6 = n1 + n2
        n1 = n2
        n2 = n3
        n3 = n4
        n4 = n5
        n5 = n6
        i += 1
    }
    return n5
}

// prime_fib_prime returns n-th number that is a Fibonacci number and it's also prime.
// primeFibPrime(n: 1) == 2
// primeFibPrime(n: 2) == 3
// primeFibPrime(n: 3) == 5
// primeFibPrime(n: 4) == 13
// primeFibPrime(n: 5) == 89
func primeFibPrime(n: Int) -> Int {
    var n1 = 2
    var n2 = 3
    var n3 = 5
    var n4 = 13
    var n5 = 89
    var i = 5
    while i < n {
        let n6 = n1 + n2
        n1 = n2
        n2 = n3
        n3 = n4
        n4 = n5
        n5 = n6
        if isPrime(n5) {
            return n5
        }
        i += 1
    }
    return n5
}

// is_prime returns true if n is a prime number.
// isPrime(n: 2) == true
// isPrime(n: 3) == true
// isPrime(n: 4) == false
// isPrime(n: 5) == true
// isPrime(n: 6) == false
func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n == 3 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    if n % 3 == 0 {
        return false
    }
    var i = 5
    while i * i <= n {
        if n % i == 0 {
            return false
        }
        i += 2
    }
    return true
}

// is_prime_prime returns true if n is a prime number and it's also prime.
// isPrimePrime(n: 2) == true
// isPrimePrime(n: 3) == true
// isPrimePrime(n: 4) == false
// isPrimePrime(n: 5) == true
// isPrimePrime(n: 6) == false
func isPrimePrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n == 3 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    if n % 3 == 0 {
        return false
    }
    var i = 5
    while i * i <= n {
        if n % i == 0 {
            return false
        }
        i += 2
    }
    return true
}

// is_prime_prime_prime returns true if n is a prime number and it's also prime and it's also a Fibonacci number.
// isPrimePrimePrime(n: 2) == true
// isPrimePrimePrime(n: 3) == true
// isPrimePrimePrime(n: 4) == false
// isPrimePrimePrime(n: 5) == true
// isPrimePrimePrime(n: 6) == false
// isPrimePrimePrime(n: 7) == true
// isPrimePrimePrime(n: 8) == false
// isPrimePrimePrime(n: 9) == false
// isPrimePrimePrime(n: 10) == false
// isPrimePrimePrime(n: 11) == true
// isPrimePrimePrime(n: 12) == false
// isPrimePrimePrime(n: 13) == true
// isPrimePrimePrime(n: 14) == false
// isPrimePrimePrime(n: 15) == false
// isPrimePrimePrime(n: 16)
if isPrime(n5) { // missing argument label 'n:' in call

func primeFib(n: Int) -> Int {
    var a = 0
    var b = 1
    var i = 0
    while i < n {
        let temp = a
        a = b
        b = temp + b
        i += 1
    }
    return a
}

func primeFibPrime(n: Int) -> Int {
    var a = 0
    var b = 1
    var i = 0
    while i < n {
        let temp = a
        a = b
        b = temp + b
        i += 1
    }
    if isPrime(a) {
        return a
    }
    return 0
}

func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3..<n {
        if n % i == 0 {
            return false
        }
    }
    return true
}

func isPrimePrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3..<n {
        if n % i == 0 {
            return false
        }
    }
    if isPrime(n) {
        return true
    }
    return false
}

func isPrimeFib(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3..<n {
        if n % i == 0 {
            return false
        }
    }
    if isPrime(n) {
        return isPrimeFib(primeFib(n: n))
    }
    return false
}

func isPrimeFibPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3..<n {
        if n % i == 0 {
            return false
        }
    }
    if isPrime(n) {
        return isPrimeFibPrime(primeFibPrime(n: n))
    }
    return false
}

func isPrimeFibPrimePrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3..<n {
        if n % i == 0 {
            return false
        }
    }
    if isPrime(n) {
        return isPrimeFibPrimePrime(primeFibPrimePrime(n: n))
    }
    return false
}
```swift
// prime_fib returns n-th number that is a Fibonacci number and it's also prime.
// primeFib(n: 1) == 2
// primeFib(n: 2) == 3
// primeFib(n: 3) == 5
// primeFib(n: 4) == 13
// primeFib(n: 5) == 89
func primeFib(n: Int) -> Int {
    var a = 0
    var b = 1
    var i = 0
    while i < n {
        let temp = a
        a = b
        b = temp + b
        i += 1
    }
    return a
}

// prime_fib_prime returns n-th number that is a Fibonacci number and it's also prime.
// primeFibPrime(n: 1) == 2
// primeFibPrime(n: 2) == 3
// primeFibPrime(n: 3) == 5
// primeFibPrime(n: 4) == 13
// primeFibPrime(n: 5) == 89
func primeFibPrime(n: Int) -> Int {
    var a = 0
    var b = 1
    var i = 0
    while i < n {
        let temp = a
        a = b
        b = temp + b
        i += 1
    }
    if isPrime(a) {
        return a
    }
    return 0
}

// is_prime returns true if n is prime
func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3..<n {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// is_prime_prime returns true if n is prime and it's also prime
func isPrimePrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3..<n {
        if n % i == 0 {
            return false
        }
    }
    if isPrime(n) {
        return true
    }
    return false
}

// is_prime_fib returns true if n is prime and it's also Fibonacci number
func isPrimeFib(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3..<n {
        if n % i == 0 {
            return false
        }
    }
    if isPrime(n) {
        return isPrimeFib(primeFib(n: n))
    }
    return false
}

// is_prime_fib_prime returns true if n is prime and it's also Fibonacci number and it's also prime
func isPrimeFibPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3..<n {
        if n % i == 0 {
            return false
        }
    }
    if isPrime(n) {
        return isPrimeFibPrime(primeFibPrime(n: n))
    }
    return false
}

// is_prime_fib_prime_prime returns true if n is prime and it's also Fibonacci number and it's also prime and it's also prime
func isPrimeFibPrimePrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3..<n {
        if n % i == 0 {
            return false
        }
    }
    if isPrime(n) {
        return isPrimeFibPrimePrime(primeFibPrimePrime(n: n))
    }
    return false
}

// is_prime_fib_prime_prime_prime returns true if n is prime and it's also Fibonacci number and it's also prime and it's also prime and it's also prime
func isPrimeFibPrimePrimePrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3..<n {
        if n % i == 0 {
            return false
        }
    }
    if isPrime(n) {
        return isPrimeFibPrimePrimePrime(primeFibPrimePrimePrime(n:
if isPrime(a) { // missing argument label 'n:' in call
if isPrime(n) { // missing argument label 'n:' in call
if isPrime(n) { // missing argument label 'n:' in call
return isPrimeFib(primeFib(n: n)) // missing argument label 'n:' in call
if isPrime(n) { // missing argument label 'n:' in call
return isPrimeFibPrime(primeFibPrime(n: n)) // missing argument label 'n:' in call
if isPrime(n) { // missing argument label 'n:' in call
return isPrimeFibPrimePrime(primeFibPrimePrime(n: n)) // cannot find 'primeFibPrimePrime' in scope
return isPrimeFibPrimePrime(primeFibPrimePrime(n: n)) // missing argument label 'n:' in call

func primeFib(n: Int) -> Int {
    var a = 0
    var b = 1
    var c = 0
    for _ in 0..<n {
        c = a + b
        a = b
        b = c
    }
    return c
}

func primeFibPrime(n: Int) -> Int {
    var a = 0
    var b = 1
    var c = 0
    var isPrime = true
    for _ in 0..<n {
        c = a + b
        a = b
        b = c
        isPrime = true
        for i in 2..<c {
            if c % i == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            return c
        }
    }
    return -1
}

func primeFibPrimePrime(n: Int) -> Int {
    var a = 0
    var b = 1
    var c = 0
    var isPrime = true
    for _ in 0..<n {
        c = a + b
        a = b
        b = c
        isPrime = true
        for i in 2..<c {
            if c % i == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            for j in 2..<c {
                if c % j == 0 {
                    isPrime = false
                    break
                }
            }
        }
        if isPrime {
            return c
        }
    }
    return -1
}

func primeFibPrimePrimePrime(n: Int) -> Int {
    var a = 0
    var b = 1
    var c = 0
    var isPrime = true
    for _ in 0..<n {
        c = a + b
        a = b
        b = c
        isPrime = true
        for i in 2..<c {
            if c % i == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            for j in 2..<c {
                if c % j == 0 {
                    isPrime = false
                    break
                }
            }
        }
        if isPrime {
            for k in 2..<c {
                if c % k == 0 {
                    isPrime = false
                    break
                }
            }
        }
        if isPrime {
            return c
        }
    }
    return -1
}
```swift
// prime_fib returns n-th number that is a Fibonacci number and it's also prime.
// primeFib(n: 1) == 2
// primeFib(n: 2) == 3
// primeFib(n: 3) == 5
// primeFib(n: 4) == 13
// primeFib(n: 5) == 89
func primeFib(n: Int) -> Int {
    var a = 0
    var b = 1
    var c = 0
    for _ in 0..<n {
        c = a + b
        a = b
        b = c
    }
    return c
}

// prime_fib_prime returns n-th number that is a Fibonacci number and it's also prime.
// primeFibPrime(n: 1) == 2
// primeFibPrime(n: 2) == 3
// primeFibPrime(n: 3) == 5
// primeFibPrime(n: 4) == 13
// primeFibPrime(n: 5) == 89
func primeFibPrime(n: Int) -> Int {
    var a = 0
    var b = 1
    var c = 0
    var isPrime = true
    for _ in 0..<n {
        c = a + b
        a = b
        b = c
        isPrime = true
        for i in 2..<c {
            if c % i == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            return c
        }
    }
    return -1
}

// prime_fib_prime_prime returns n-th number that is a Fibonacci number and it's also prime.
// primeFibPrimePrime(n: 1) == 2
// primeFibPrimePrime(n: 2) == 3
// primeFibPrimePrime(n: 3) == 5
// primeFibPrimePrime(n: 4) == 13
// primeFibPrimePrime(n: 5) == 89
func primeFibPrimePrime(n: Int) -> Int {
    var a = 0
    var b = 1
    var c = 0
    var isPrime = true
    for _ in 0..<n {
        c = a + b
        a = b
        b = c
        isPrime = true
        for i in 2..<c {
            if c % i == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            for j in 2..<c {
                if c % j == 0 {
                    isPrime = false
                    break
                }
            }
        }
        if isPrime {
            return c
        }
    }
    return -1
}

// prime_fib_prime_prime_prime returns n-th number that is a Fibonacci number and it's also prime.
// primeFibPrimePrimePrime(n: 1) == 2
// primeFibPrimePrimePrime(n: 2) == 3
// primeFibPrimePrimePrime(n: 3) == 5
// primeFibPrimePrimePrime(n: 4) == 13
// primeFibPrimePrimePrime(n: 5) == 89
func primeFibPrimePrimePrime(n: Int) -> Int {
    var a = 0
    var b = 1
    var c = 0
    var isPrime = true
    for _ in 0..<n {
        c = a + b
        a = b
        b = c
        isPrime = true
        for i in 2..<c {
            if c % i == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            for j in 2..<c {
                if c % j == 0 {
                    isPrime = false
                    break
                }
            }
        }
        if isPrime {
            for k in 2..<c {
                if c % k == 0 {
                    isPrime = false
                    break
                }
            }
        }
        if isPrime {
            return c
        }
    }
    return -1
}

// prime_fib_prime_prime_prime_prime returns n-th number that is a Fibonacci number and it's also prime.
// primeFibPrimePrimePrimePrime(n: 1) == 2
// primeFibPrimePrimePrimePrime(n: 2) == 3
// primeFibPrimePrimePrimePrime(n: 3) == 5
// primeFibPrimePrimePrimePrime(n: 4) == 13
// primeFibPrimePrimePrimePrime(n: 5) == 89
func primeFibPrimePrimePrimePrime(n: Int) -> Int {
    var
 // XCTAssertTrue failed

func primeFib(n: Int) -> Int {
    var a = 1
    var b = 1
    var c = 0
    var i = 0
    while i < n {
        c = a + b
        a = b
        b = c
        i += 1
    }
    return a
}

func primeFib2(n: Int) -> Int {
    var a = 1
    var b = 1
    var c = 0
    var i = 0
    while i < n {
        c = a + b
        a = b
        b = c
        i += 1
    }
    return a
}

func primeFib3(n: Int) -> Int {
    var a = 1
    var b = 1
    var c = 0
    var i = 0
    while i < n {
        c = a + b
        a = b
        b = c
        i += 1
    }
    return a
}

func primeFib4(n: Int) -> Int {
    var a = 1
    var b = 1
    var c = 0
    var i = 0
    while i < n {
        c = a + b
        a = b
        b = c
        i += 1
    }
    return a
}

func primeFib5(n: Int) -> Int {
    var a = 1
    var b = 1
    var c = 0
    var i = 0
    while i < n {
        c = a + b
        a = b
        b = c
        i += 1
    }
    return a
}

func primeFib6(n: Int) -> Int {
    var a = 1
    var b = 1
    var c = 0
    var i = 0
    while i < n {
        c = a + b
        a = b
        b = c
        i += 1
    }
    return a
}
```swift
// prime_fib returns n-th number that is a Fibonacci number and it's also prime.
// primeFib(n: 1) == 2
// primeFib(n: 2) == 3
// primeFib(n: 3) == 5
// primeFib(n: 4) == 13
// primeFib(n: 5) == 89
func primeFib(n: Int) -> Int {
    var a = 1
    var b = 1
    var c = 0
    var i = 0
    while i < n {
        c = a + b
        a = b
        b = c
        i += 1
    }
    return a
}

// prime_fib_2 returns n-th number that is a Fibonacci number and it's also prime.
// primeFib2(n: 1) == 2
// primeFib2(n: 2) == 3
// primeFib2(n: 3) == 5
// primeFib2(n: 4) == 13
// primeFib2(n: 5) == 89
func primeFib2(n: Int) -> Int {
    var a = 1
    var b = 1
    var c = 0
    var i = 0
    while i < n {
        c = a + b
        a = b
        b = c
        i += 1
    }
    return a
}

// prime_fib_3 returns n-th number that is a Fibonacci number and it's also prime.
// primeFib3(n: 1) == 2
// primeFib3(n: 2) == 3
// primeFib3(n: 3) == 5
// primeFib3(n: 4) == 13
// primeFib3(n: 5) == 89
func primeFib3(n: Int) -> Int {
    var a = 1
    var b = 1
    var c = 0
    var i = 0
    while i < n {
        c = a + b
        a = b
        b = c
        i += 1
    }
    return a
}

// prime_fib_4 returns n-th number that is a Fibonacci number and it's also prime.
// primeFib4(n: 1) == 2
// primeFib4(n: 2) == 3
// primeFib4(n: 3) == 5
// primeFib4(n: 4) == 13
// primeFib4(n: 5) == 89
func primeFib4(n: Int) -> Int {
    var a = 1
    var b = 1
    var c = 0
    var i = 0
    while i < n {
        c = a + b
        a = b
        b = c
        i += 1
    }
    return a
}

// prime_fib_5 returns n-th number that is a Fibonacci number and it's also prime.
// primeFib5(n: 1) == 2
// primeFib5(n: 2) == 3
// primeFib5(n: 3) == 5
// primeFib5(n: 4) == 13
// primeFib5(n: 5) == 89
func primeFib5(n: Int) -> Int {
    var a = 1
    var b = 1
    var c = 0
    var i = 0
    while i < n {
        c = a + b
        a = b
        b = c
        i += 1
    }
    return a
}

// prime_fib_6 returns n-th number that is a Fibonacci number and it's also prime.
// primeFib6(n: 1) == 2
// primeFib6(n: 2) == 3
// primeFib6(n: 3) == 5
// primeFib6(n: 4) == 13
// primeFib6(n: 5) == 89
func primeFib6(n: Int) -> Int {
    var a = 1
    var b = 1
    var c = 0
    var i = 0
    while i < n {
        c = a + b
        a = b
        b = c
        i += 1
    }
    return a
}

// prime_fib_7 returns n-th number that is a Fibonacci number and it's also prime.
// primeFib7(n: 1) == 2
// primeFib7(n: 2) == 3
// primeFib7(n: 3) == 5
// primeFib7(n: 4)
 // XCTAssertTrue failed

func triplesSumToZero(l: [Int]) -> Bool {
    var l = l
    l.sort()
    for i in 0..<l.count-2 {
        var j = i+1
        var k = l.count-1
        while j < k {
            if l[i] + l[j] + l[k] == 0 {
                return true
            } else if l[i] + l[j] + l[k] < 0 {
                j += 1
            } else {
                k -= 1
            }
        }
    }
    return false
}
```swift
// triples_sum_to_zero takes an array of integers as an input.
// it returns true if there are three distinct elements in the array that
// sum to zero, and false otherwise.
// triplesSumToZero(l: [1, 3, 5, 0]) == false
// triplesSumToZero(l: [1, 3, -2, 1]) == true
// triplesSumToZero(l: [1, 2, 3, 7]) == false
// triplesSumToZero(l: [2, 4, -5, 3, 9, 7]) == true
// triplesSumToZero(l: [1]) == false
func triplesSumToZero(l: [Int]) -> Bool {
    var l = l
    l.sort()
    for i in 0..<l.count-2 {
        var j = i+1
        var k = l.count-1
        while j < k {
            if l[i] + l[j] + l[k] == 0 {
                return true
            } else if l[i] + l[j] + l[k] < 0 {
                j += 1
            } else {
                k -= 1
            }
        }
    }
    return false
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func triplesSumToZero(l: [Int]) -> Bool {
    var l = l
    l.sort()
    for i in 0..<l.count-2 {
        var j = i+1
        var k = l.count-1
        while j < k {
            if l[i] + l[j] + l[k] == 0 {
                return true
            } else if l[i] + l[j] + l[k] < 0 {
                j += 1
            } else {
                k -= 1
            }
        }
    }
    return false
}
```swift
// triples_sum_to_zero takes an array of integers as an input.
// it returns true if there are three distinct elements in the array that
// sum to zero, and false otherwise.
// triplesSumToZero(l: [1, 3, 5, 0]) == false
// triplesSumToZero(l: [1, 3, -2, 1]) == true
// triplesSumToZero(l: [1, 2, 3, 7]) == false
// triplesSumToZero(l: [2, 4, -5, 3, 9, 7]) == true
// triplesSumToZero(l: [1]) == false
func triplesSumToZero(l: [Int]) -> Bool {
    var l = l
    l.sort()
    for i in 0..<l.count-2 {
        var j = i+1
        var k = l.count-1
        while j < k {
            if l[i] + l[j] + l[k] == 0 {
                return true
            } else if l[i] + l[j] + l[k] < 0 {
                j += 1
            } else {
                k -= 1
            }
        }
    }
    return false
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func triplesSumToZero(l: [Int]) -> Bool {
    var l = l
    l.sort()
    for i in 0..<l.count-2 {
        for j in i+1..<l.count-1 {
            for k in j+1..<l.count {
                if l[i] + l[j] + l[k] == 0 {
                    return true
                }
            }
        }
    }
    return false
}
```swift
// triples_sum_to_zero takes an array of integers as an input.
// it returns true if there are three distinct elements in the array that
// sum to zero, and false otherwise.
// triplesSumToZero(l: [1, 3, 5, 0]) == false
// triplesSumToZero(l: [1, 3, -2, 1]) == true
// triplesSumToZero(l: [1, 2, 3, 7]) == false
// triplesSumToZero(l: [2, 4, -5, 3, 9, 7]) == true
// triplesSumToZero(l: [1]) == false
func triplesSumToZero(l: [Int]) -> Bool {
    var l = l
    l.sort()
    for i in 0..<l.count-2 {
        for j in i+1..<l.count-1 {
            for k in j+1..<l.count {
                if l[i] + l[j] + l[k] == 0 {
                    return true
                }
            }
        }
    }
    return false
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func triplesSumToZero(l: [Int]) -> Bool {
    // create a set of integers
    var s = Set<Int>()
    // loop through the array
    for i in l {
        // check if the set contains -i
        if s.contains(-i) {
            // if it does, return true
            return true
        }
        // add i to the set
        s.insert(i)
    }
    // if we get to this point, there are no triples
    return false
}
```swift
// triples_sum_to_zero takes an array of integers as an input.
// it returns true if there are three distinct elements in the array that
// sum to zero, and false otherwise.
// triplesSumToZero(l: [1, 3, 5, 0]) == false
// triplesSumToZero(l: [1, 3, -2, 1]) == true
// triplesSumToZero(l: [1, 2, 3, 7]) == false
// triplesSumToZero(l: [2, 4, -5, 3, 9, 7]) == true
// triplesSumToZero(l: [1]) == false
func triplesSumToZero(l: [Int]) -> Bool {
    // create a set of integers
    var s = Set<Int>()
    // loop through the array
    for i in l {
        // check if the set contains -i
        if s.contains(-i) {
            // if it does, return true
            return true
        }
        // add i to the set
        s.insert(i)
    }
    // if we get to this point, there are no triples
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func triplesSumToZero(l: [Int]) -> Bool {
  // 1. Create a dictionary to store the elements of the array.
  var dict = [Int: Int]()
  // 2. Loop through the array.
  for i in 0..<l.count {
    // 3. Check if the element is in the dictionary.
    if dict[l[i]] != nil {
      // 4. If it is, return true.
      return true
    }
    // 5. Add the element to the dictionary.
    dict[l[i]] = 1
  }
  // 6. If no element is found, return false.
  return false
}
```swift
// triples_sum_to_zero takes an array of integers as an input.
// it returns true if there are three distinct elements in the array that
// sum to zero, and false otherwise.
// triplesSumToZero(l: [1, 3, 5, 0]) == false
// triplesSumToZero(l: [1, 3, -2, 1]) == true
// triplesSumToZero(l: [1, 2, 3, 7]) == false
// triplesSumToZero(l: [2, 4, -5, 3, 9, 7]) == true
// triplesSumToZero(l: [1]) == false
func triplesSumToZero(l: [Int]) -> Bool {
  // 1. Create a dictionary to store the elements of the array.
  var dict = [Int: Int]()
  // 2. Loop through the array.
  for i in 0..<l.count {
    // 3. Check if the element is in the dictionary.
    if dict[l[i]] != nil {
      // 4. If it is, return true.
      return true
    }
    // 5. Add the element to the dictionary.
    dict[l[i]] = 1
  }
  // 6. If no element is found, return false.
  return false
}
<|file_separator|>
 // XCTAssertTrue failed

func triplesSumToZero(l: [Int]) -> Bool {
  var l = l
  l.sort()
  for i in 0..<l.count {
    for j in i+1..<l.count {
      for k in j+1..<l.count {
        if l[i] + l[j] + l[k] == 0 {
          return true
        }
      }
    }
  }
  return false
}
```swift
// triples_sum_to_zero takes an array of integers as an input.
// it returns true if there are three distinct elements in the array that
// sum to zero, and false otherwise.
// triplesSumToZero(l: [1, 3, 5, 0]) == false
// triplesSumToZero(l: [1, 3, -2, 1]) == true
// triplesSumToZero(l: [1, 2, 3, 7]) == false
// triplesSumToZero(l: [2, 4, -5, 3, 9, 7]) == true
// triplesSumToZero(l: [1]) == false
func triplesSumToZero(l: [Int]) -> Bool {
  var l = l
  l.sort()
  for i in 0..<l.count {
    for j in i+1..<l.count {
      for k in j+1..<l.count {
        if l[i] + l[j] + l[k] == 0 {
          return true
        }
      }
    }
  }
  return false
}
<|file_separator|>

func triplesSumToZero(l: [Int]) -> Bool {
    var l = l
    l.sort()
    for i in 0..<l.count {
        for j in 0..<l.count {
            for k in 0..<l.count {
                if i != j && j != k && k != i {
                    if l[i] + l[j] + l[k] == 0 {
                        return true
                    }
                }
            }
        }
    }
    return false
}
```swift
// triples_sum_to_zero takes an array of integers as an input.
// it returns true if there are three distinct elements in the array that
// sum to zero, and false otherwise.
// triplesSumToZero(l: [1, 3, 5, 0]) == false
// triplesSumToZero(l: [1, 3, -2, 1]) == true
// triplesSumToZero(l: [1, 2, 3, 7]) == false
// triplesSumToZero(l: [2, 4, -5, 3, 9, 7]) == true
// triplesSumToZero(l: [1]) == false
func triplesSumToZero(l: [Int]) -> Bool {
    var l = l
    l.sort()
    for i in 0..<l.count {
        for j in 0..<l.count {
            for k in 0..<l.count {
                if i != j && j != k && k != i {
                    if l[i] + l[j] + l[k] == 0 {
                        return true
                    }
                }
            }
        }
    }
    return false
}
<|file_separator|>

func triplesSumToZero(l: [Int]) -> Bool {
    var l = l
    l.sort()
    var i = 0
    var j = 1
    var k = 2
    while k < l.count {
        if l[i] + l[j] + l[k] == 0 {
            return true
        }
        if l[i] + l[j] + l[k] < 0 {
            j += 1
        } else {
            k += 1
        }
    }
    return false
}
```swift
// triples_sum_to_zero takes an array of integers as an input.
// it returns true if there are three distinct elements in the array that
// sum to zero, and false otherwise.
// triplesSumToZero(l: [1, 3, 5, 0]) == false
// triplesSumToZero(l: [1, 3, -2, 1]) == true
// triplesSumToZero(l: [1, 2, 3, 7]) == false
// triplesSumToZero(l: [2, 4, -5, 3, 9, 7]) == true
// triplesSumToZero(l: [1]) == false
func triplesSumToZero(l: [Int]) -> Bool {
    var l = l
    l.sort()
    var i = 0
    var j = 1
    var k = 2
    while k < l.count {
        if l[i] + l[j] + l[k] == 0 {
            return true
        }
        if l[i] + l[j] + l[k] < 0 {
            j += 1
        } else {
            k += 1
        }
    }
    return false
}
<|file_separator|>
var i = 0 // variable 'i' was never mutated; consider changing to 'let' constant
 // Fatal error: Index out of range

func triplesSumToZero(l: [Int]) -> Bool {
  var l = l
  l.sort()
  for i in 0..<l.count {
    for j in 0..<l.count {
      for k in 0..<l.count {
        if l[i] + l[j] + l[k] == 0 {
          return true
        }
      }
    }
  }
  return false
}

func triplesSumToZeroV2(l: [Int]) -> Bool {
  var l = l
  l.sort()
  for i in 0..<l.count {
    for j in 0..<l.count {
      for k in 0..<l.count {
        if l[i] + l[j] + l[k] == 0 {
          return true
        }
      }
    }
  }
  return false
}

func triplesSumToZeroV3(l: [Int]) -> Bool {
  var l = l
  l.sort()
  for i in 0..<l.count {
    for j in 0..<l.count {
      for k in 0..<l.count {
        if l[i] + l[j] + l[k] == 0 {
          return true
        }
      }
    }
  }
  return false
}

func triplesSumToZeroV4(l: [Int]) -> Bool {
  var l = l
  l.sort()
  for i in 0..<l.count {
    for j in 0..<l.count {
      for k in 0..<l.count {
        if l[i] + l[j] + l[k] == 0 {
          return true
        }
      }
    }
  }
  return false
}
```swift
// triples_sum_to_zero takes an array of integers as an input.
// it returns true if there are three distinct elements in the array that
// sum to zero, and false otherwise.
// triplesSumToZero(l: [1, 3, 5, 0]) == false
// triplesSumToZero(l: [1, 3, -2, 1]) == true
// triplesSumToZero(l: [1, 2, 3, 7]) == false
// triplesSumToZero(l: [2, 4, -5, 3, 9, 7]) == true
// triplesSumToZero(l: [1]) == false
func triplesSumToZero(l: [Int]) -> Bool {
  var l = l
  l.sort()
  for i in 0..<l.count {
    for j in 0..<l.count {
      for k in 0..<l.count {
        if l[i] + l[j] + l[k] == 0 {
          return true
        }
      }
    }
  }
  return false
}

// triples_sum_to_zero_v2 takes an array of integers as an input.
// it returns true if there are three distinct elements in the array that
// sum to zero, and false otherwise.
// triplesSumToZeroV2(l: [1, 3, 5, 0]) == false
// triplesSumToZeroV2(l: [1, 3, -2, 1]) == true
// triplesSumToZeroV2(l: [1, 2, 3, 7]) == false
// triplesSumToZeroV2(l: [2, 4, -5, 3, 9, 7]) == true
// triplesSumToZeroV2(l: [1]) == false
func triplesSumToZeroV2(l: [Int]) -> Bool {
  var l = l
  l.sort()
  for i in 0..<l.count {
    for j in 0..<l.count {
      for k in 0..<l.count {
        if l[i] + l[j] + l[k] == 0 {
          return true
        }
      }
    }
  }
  return false
}

// triples_sum_to_zero_v3 takes an array of integers as an input.
// it returns true if there are three distinct elements in the array that
// sum to zero, and false otherwise.
// triplesSumToZeroV3(l: [1, 3, 5, 0]) == false
// triplesSumToZeroV3(l: [1, 3, -2, 1]) == true
// triplesSumToZeroV3(l: [1, 2, 3, 7]) == false
// triplesSumToZeroV3(l: [2, 4, -5, 3, 9, 7]) == true
// triplesSumToZeroV3(l: [1]) == false
func triplesSumToZeroV3(l: [Int]) -> Bool {
  var l = l
  l.sort()
  for i in 0..<l.count {
    for j in 0..<l.count {
      for k in 0..<l.count {
        if l[i] + l[j] + l[k] == 0 {
          return true
        }
      }
    }
  }
  return false
}

// triples_sum_to_zero_v4 takes an array of integers as an input.
// it returns true if there are three distinct elements in the array that
// sum to zero, and false otherwise.
// triplesSumToZeroV4(l: [1, 3, 5, 0]) == false
// triplesSumToZeroV4(l: [1, 3, -2, 1]) == true
// triplesSumToZeroV4(l: [1, 2, 3, 7]) == false
// triplesSumToZeroV4(l: [2, 4, -5, 3, 9, 7]) == true
// triplesSumToZeroV4(l: [1]) == false
func triplesSumToZeroV4(l: [Int]) -> Bool {
  var l = l
  l.sort()
  for i in 0..<l.count {
    for j in 0..<l.count {
      for k in 0..<l.count {
        if l[i] + l[j] + l[k] == 0 {
          return true
        }
      }
    }
  }
  return false
}

// triples_sum_to_zero_v5 takes an array of integers as an input.
// it returns true if there are three distinct elements in the array that
// sum to zero, and false otherwise.
// triplesSumToZeroV5(l: [1, 3, 5, 0]) == false
// triplesSumToZeroV5(l: [1, 3, -2, 1]) == true
// triplesSumToZeroV5(
 // XCTAssertTrue failed

func triplesSumToZero(l: [Int]) -> Bool {
    var l = l
    l.sort()
    for i in 0..<l.count {
        for j in i+1..<l.count {
            for k in j+1..<l.count {
                if l[i] + l[j] + l[k] == 0 {
                    return true
                }
            }
        }
    }
    return false
}
```swift
// triples_sum_to_zero takes an array of integers as an input.
// it returns true if there are three distinct elements in the array that
// sum to zero, and false otherwise.
// triplesSumToZero(l: [1, 3, 5, 0]) == false
// triplesSumToZero(l: [1, 3, -2, 1]) == true
// triplesSumToZero(l: [1, 2, 3, 7]) == false
// triplesSumToZero(l: [2, 4, -5, 3, 9, 7]) == true
// triplesSumToZero(l: [1]) == false
func triplesSumToZero(l: [Int]) -> Bool {
    var l = l
    l.sort()
    for i in 0..<l.count {
        for j in i+1..<l.count {
            for k in j+1..<l.count {
                if l[i] + l[j] + l[k] == 0 {
                    return true
                }
            }
        }
    }
    return false
}
<|file_separator|>

func carRaceCollision(n: Int) -> Int {
  // Write your code here.
  var leftCars = [Int]()
  var rightCars = [Int]()
  var collisionCount = 0
  for i in 0..<n {
    leftCars.append(i)
    rightCars.append(n-i-1)
  }
  for i in 0..<n {
    for j in 0..<n {
      if leftCars[i] == rightCars[j] {
        collisionCount += 1
      }
    }
  }
  return collisionCount
}
```swift
// Imagine a road that's a perfectly straight infinitely long line.
// n cars are driving left to right;  simultaneously, a different set of n cars
// are driving right to left.   The two sets of cars start out being very far from
// each other.  All cars move in the same speed.  Two cars are said to collide
// when a car that's moving left to right hits a car that's moving right to left.
// However, the cars are infinitely sturdy and strong; as a result, they continue moving
// in their trajectory as if they did not collide.
// This function outputs the number of such collisions.
func carRaceCollision(n: Int) -> Int {
  // Write your code here.
  var leftCars = [Int]()
  var rightCars = [Int]()
  var collisionCount = 0
  for i in 0..<n {
    leftCars.append(i)
    rightCars.append(n-i-1)
  }
  for i in 0..<n {
    for j in 0..<n {
      if leftCars[i] == rightCars[j] {
        collisionCount += 1
      }
    }
  }
  return collisionCount
}
<|file_separator|>
 // XCTAssertTrue failed

func carRaceCollision(n: Int) -> Int {
  // your code goes here
}
```swift
// Imagine a road that's a perfectly straight infinitely long line.
// n cars are driving left to right;  simultaneously, a different set of n cars
// are driving right to left.   The two sets of cars start out being very far from
// each other.  All cars move in the same speed.  Two cars are said to collide
// when a car that's moving left to right hits a car that's moving right to left.
// However, the cars are infinitely sturdy and strong; as a result, they continue moving
// in their trajectory as if they did not collide.
// This function outputs the number of such collisions.
func carRaceCollision(n: Int) -> Int {
  // your code goes here
}
<|file_separator|>
} // missing return in global function expected to return 'Int'

func carRaceCollision(n: Int) -> Int {
  var cars = [Int]()
  for i in 0..<n {
    cars.append(0)
  }
  var collisions = 0
  for i in 0..<n {
    for j in 0..<n {
      if i != j {
        if cars[i] == 0 && cars[j] == 0 {
          cars[i] = 1
          cars[j] = 1
          collisions += 1
        }
      }
    }
  }
  return collisions
}
```swift
// Imagine a road that's a perfectly straight infinitely long line.
// n cars are driving left to right;  simultaneously, a different set of n cars
// are driving right to left.   The two sets of cars start out being very far from
// each other.  All cars move in the same speed.  Two cars are said to collide
// when a car that's moving left to right hits a car that's moving right to left.
// However, the cars are infinitely sturdy and strong; as a result, they continue moving
// in their trajectory as if they did not collide.
// This function outputs the number of such collisions.
func carRaceCollision(n: Int) -> Int {
  var cars = [Int]()
  for i in 0..<n {
    cars.append(0)
  }
  var collisions = 0
  for i in 0..<n {
    for j in 0..<n {
      if i != j {
        if cars[i] == 0 && cars[j] == 0 {
          cars[i] = 1
          cars[j] = 1
          collisions += 1
        }
      }
    }
  }
  return collisions
}
<|file_separator|>
for i in 0..<n { // immutable value 'i' was never used; consider replacing with '_' or removing it
 // XCTAssertTrue failed

func carRaceCollision(n: Int) -> Int {
    // Write your code here
    var leftCars = [Int]()
    var rightCars = [Int]()
    for i in 0..<n {
        leftCars.append(i)
        rightCars.append(n - i - 1)
    }
    var collision = 0
    for i in 0..<n {
        for j in 0..<n {
            if leftCars[i] == rightCars[j] {
                collision += 1
            }
        }
    }
    return collision
}
```swift
// Imagine a road that's a perfectly straight infinitely long line.
// n cars are driving left to right;  simultaneously, a different set of n cars
// are driving right to left.   The two sets of cars start out being very far from
// each other.  All cars move in the same speed.  Two cars are said to collide
// when a car that's moving left to right hits a car that's moving right to left.
// However, the cars are infinitely sturdy and strong; as a result, they continue moving
// in their trajectory as if they did not collide.
// This function outputs the number of such collisions.
func carRaceCollision(n: Int) -> Int {
    // Write your code here
    var leftCars = [Int]()
    var rightCars = [Int]()
    for i in 0..<n {
        leftCars.append(i)
        rightCars.append(n - i - 1)
    }
    var collision = 0
    for i in 0..<n {
        for j in 0..<n {
            if leftCars[i] == rightCars[j] {
                collision += 1
            }
        }
    }
    return collision
}
<|file_separator|>
 // XCTAssertTrue failed

func carRaceCollision(n: Int) -> Int {
    // Write your code here
    var leftCars = [Int]()
    var rightCars = [Int]()
    var collision = 0
    for i in 0..<n {
        leftCars.append(i)
        rightCars.append(n - i - 1)
    }
    
    for i in 0..<n {
        for j in 0..<n {
            if leftCars[i] == rightCars[j] {
                collision += 1
            }
        }
    }
    
    return collision
}
```swift
// Imagine a road that's a perfectly straight infinitely long line.
// n cars are driving left to right;  simultaneously, a different set of n cars
// are driving right to left.   The two sets of cars start out being very far from
// each other.  All cars move in the same speed.  Two cars are said to collide
// when a car that's moving left to right hits a car that's moving right to left.
// However, the cars are infinitely sturdy and strong; as a result, they continue moving
// in their trajectory as if they did not collide.
// This function outputs the number of such collisions.
func carRaceCollision(n: Int) -> Int {
    // Write your code here
    var leftCars = [Int]()
    var rightCars = [Int]()
    var collision = 0
    for i in 0..<n {
        leftCars.append(i)
        rightCars.append(n - i - 1)
    }
    
    for i in 0..<n {
        for j in 0..<n {
            if leftCars[i] == rightCars[j] {
                collision += 1
            }
        }
    }
    
    return collision
}
<|file_separator|>
 // XCTAssertTrue failed

func carRaceCollision(n: Int) -> Int {
  var leftCars = [Int]()
  var rightCars = [Int]()
  var collisions = 0
  for i in 0..<n {
    leftCars.append(i)
    rightCars.append(n - i - 1)
  }
  for i in 0..<n {
    for j in 0..<n {
      if leftCars[i] == rightCars[j] {
        collisions += 1
      }
    }
  }
  return collisions
}
```swift
// Imagine a road that's a perfectly straight infinitely long line.
// n cars are driving left to right;  simultaneously, a different set of n cars
// are driving right to left.   The two sets of cars start out being very far from
// each other.  All cars move in the same speed.  Two cars are said to collide
// when a car that's moving left to right hits a car that's moving right to left.
// However, the cars are infinitely sturdy and strong; as a result, they continue moving
// in their trajectory as if they did not collide.
// This function outputs the number of such collisions.
func carRaceCollision(n: Int) -> Int {
  var leftCars = [Int]()
  var rightCars = [Int]()
  var collisions = 0
  for i in 0..<n {
    leftCars.append(i)
    rightCars.append(n - i - 1)
  }
  for i in 0..<n {
    for j in 0..<n {
      if leftCars[i] == rightCars[j] {
        collisions += 1
      }
    }
  }
  return collisions
}
<|file_separator|>
 // XCTAssertTrue failed

func carRaceCollision(n: Int) -> Int {
  // Write your code here.
  var leftCars = [Int]()
  var rightCars = [Int]()
  var collision = 0
  for i in 0..<n {
    leftCars.append(i)
  }
  for i in 0..<n {
    rightCars.append(n-i-1)
  }
  for i in 0..<n {
    for j in 0..<n {
      if leftCars[i] == rightCars[j] {
        collision += 1
      }
    }
  }
  return collision
}
```swift
// Imagine a road that's a perfectly straight infinitely long line.
// n cars are driving left to right;  simultaneously, a different set of n cars
// are driving right to left.   The two sets of cars start out being very far from
// each other.  All cars move in the same speed.  Two cars are said to collide
// when a car that's moving left to right hits a car that's moving right to left.
// However, the cars are infinitely sturdy and strong; as a result, they continue moving
// in their trajectory as if they did not collide.
// This function outputs the number of such collisions.
func carRaceCollision(n: Int) -> Int {
  // Write your code here.
  var leftCars = [Int]()
  var rightCars = [Int]()
  var collision = 0
  for i in 0..<n {
    leftCars.append(i)
  }
  for i in 0..<n {
    rightCars.append(n-i-1)
  }
  for i in 0..<n {
    for j in 0..<n {
      if leftCars[i] == rightCars[j] {
        collision += 1
      }
    }
  }
  return collision
}
<|file_separator|>
 // XCTAssertTrue failed

func carRaceCollision(n: Int) -> Int {
  // Write your code here
  var left = 0
  var right = 0
  var collision = 0
  for i in 0..<n {
    if left < right {
      left += 1
    } else {
      right += 1
    }
    if left == right {
      collision += 1
    }
  }
  return collision
}
```swift
// Imagine a road that's a perfectly straight infinitely long line.
// n cars are driving left to right;  simultaneously, a different set of n cars
// are driving right to left.   The two sets of cars start out being very far from
// each other.  All cars move in the same speed.  Two cars are said to collide
// when a car that's moving left to right hits a car that's moving right to left.
// However, the cars are infinitely sturdy and strong; as a result, they continue moving
// in their trajectory as if they did not collide.
// This function outputs the number of such collisions.
func carRaceCollision(n: Int) -> Int {
  // Write your code here
  var left = 0
  var right = 0
  var collision = 0
  for i in 0..<n {
    if left < right {
      left += 1
    } else {
      right += 1
    }
    if left == right {
      collision += 1
    }
  }
  return collision
}
<|file_separator|>
for i in 0..<n { // immutable value 'i' was never used; consider replacing with '_' or removing it
 // XCTAssertTrue failed

func carRaceCollision(n: Int) -> Int {
    var cars = [Int]()
    for i in 0..<n {
        cars.append(i)
    }
    var collisions = 0
    for i in 0..<n {
        for j in 0..<n {
            if cars[i] > cars[j] {
                collisions += 1
            }
        }
    }
    return collisions
}
```swift
// Imagine a road that's a perfectly straight infinitely long line.
// n cars are driving left to right;  simultaneously, a different set of n cars
// are driving right to left.   The two sets of cars start out being very far from
// each other.  All cars move in the same speed.  Two cars are said to collide
// when a car that's moving left to right hits a car that's moving right to left.
// However, the cars are infinitely sturdy and strong; as a result, they continue moving
// in their trajectory as if they did not collide.
// This function outputs the number of such collisions.
func carRaceCollision(n: Int) -> Int {
    var cars = [Int]()
    for i in 0..<n {
        cars.append(i)
    }
    var collisions = 0
    for i in 0..<n {
        for j in 0..<n {
            if cars[i] > cars[j] {
                collisions += 1
            }
        }
    }
    return collisions
}
<|file_separator|>
 // XCTAssertTrue failed

func carRaceCollision(n: Int) -> Int {
  var leftCars = [Int]()
  var rightCars = [Int]()
  for i in 0..<n {
    leftCars.append(i)
    rightCars.append(n - i - 1)
  }
  var collisions = 0
  for i in 0..<n {
    for j in 0..<n {
      if leftCars[i] == rightCars[j] {
        collisions += 1
      }
    }
  }
  return collisions
}
```swift
// Imagine a road that's a perfectly straight infinitely long line.
// n cars are driving left to right;  simultaneously, a different set of n cars
// are driving right to left.   The two sets of cars start out being very far from
// each other.  All cars move in the same speed.  Two cars are said to collide
// when a car that's moving left to right hits a car that's moving right to left.
// However, the cars are infinitely sturdy and strong; as a result, they continue moving
// in their trajectory as if they did not collide.
// This function outputs the number of such collisions.
func carRaceCollision(n: Int) -> Int {
  var leftCars = [Int]()
  var rightCars = [Int]()
  for i in 0..<n {
    leftCars.append(i)
    rightCars.append(n - i - 1)
  }
  var collisions = 0
  for i in 0..<n {
    for j in 0..<n {
      if leftCars[i] == rightCars[j] {
        collisions += 1
      }
    }
  }
  return collisions
}
<|file_separator|>
 // XCTAssertTrue failed

func incrList(l: [Int]) -> [Int] {
  return l.map { $0 + 1 }
}

func doubleList(l: [Int]) -> [Int] {
  return l.map { $0 * 2 }
}

func tripleList(l: [Int]) -> [Int] {
  return l.map { $0 * 3 }
}

func quadrupleList(l: [Int]) -> [Int] {
  return l.map { $0 * 4 }
}

func quintupleList(l: [Int]) -> [Int] {
  return l.map { $0 * 5 }
}

func sextupleList(l: [Int]) -> [Int] {
  return l.map { $0 * 6 }
}

func septupleList(l: [Int]) -> [Int] {
  return l.map { $0 * 7 }
}

func octupleList(l: [Int]) -> [Int] {
  return l.map { $0 * 8 }
}
```swift
// Return array with elements incremented by 1.
// incrList(l: [1, 2, 3]) == [2, 3, 4]
// incrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [6, 4, 6, 3, 4, 4, 10, 1, 124]
func incrList(l: [Int]) -> [Int] {
  return l.map { $0 + 1 }
}

// Return array with elements multiplied by 2.
// doubleList(l: [1, 2, 3]) == [2, 4, 6]
// doubleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [10, 6, 10, 4, 6, 6, 18, 0, 246]
func doubleList(l: [Int]) -> [Int] {
  return l.map { $0 * 2 }
}

// Return array with elements multiplied by 3.
// tripleList(l: [1, 2, 3]) == [3, 6, 9]
// tripleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [15, 9, 15, 6, 9, 9, 27, 0, 369]
func tripleList(l: [Int]) -> [Int] {
  return l.map { $0 * 3 }
}

// Return array with elements multiplied by 4.
// quadrupleList(l: [1, 2, 3]) == [4, 8, 12]
// quadrupleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [20, 12, 20, 8, 12, 12, 36, 0, 432]
func quadrupleList(l: [Int]) -> [Int] {
  return l.map { $0 * 4 }
}

// Return array with elements multiplied by 5.
// quintupleList(l: [1, 2, 3]) == [5, 10, 15]
// quintupleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [25, 15, 25, 10, 15, 15, 45, 0, 675]
func quintupleList(l: [Int]) -> [Int] {
  return l.map { $0 * 5 }
}

// Return array with elements multiplied by 6.
// sextupleList(l: [1, 2, 3]) == [6, 12, 18]
// sextupleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [30, 18, 30, 12, 18, 18, 72, 0, 1080]
func sextupleList(l: [Int]) -> [Int] {
  return l.map { $0 * 6 }
}

// Return array with elements multiplied by 7.
// septupleList(l: [1, 2, 3]) == [7, 14, 21]
// septupleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [35, 21, 35, 14, 21, 21, 105, 0, 1625]
func septupleList(l: [Int]) -> [Int] {
  return l.map { $0 * 7 }
}

// Return array with elements multiplied by 8.
// octupleList(l: [1, 2, 3]) == [8, 16, 24]
// octupleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [40, 24, 40, 16, 24, 24, 144, 0, 2880]
func octupleList(l: [Int]) -> [Int] {
  return l.map { $0 * 8 }
}

// Return array with elements

func incrList(l: [Int]) -> [Int] {
  return l.map { $0 + 1 }
}
```swift
// Return array with elements incremented by 1.
// incrList(l: [1, 2, 3]) == [2, 3, 4]
// incrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [6, 4, 6, 3, 4, 4, 10, 1, 124]
func incrList(l: [Int]) -> [Int] {
  return l.map { $0 + 1 }
}
<|file_separator|>

func incrList(l: [Int]) -> [Int] {
    return l.map { $0 + 1 }
}
```swift
// Return array with elements incremented by 1.
// incrList(l: [1, 2, 3]) == [2, 3, 4]
// incrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [6, 4, 6, 3, 4, 4, 10, 1, 124]
func incrList(l: [Int]) -> [Int] {
    return l.map { $0 + 1 }
}
<|file_separator|>

func incrList(l: [Int]) -> [Int] {
  return l.map { $0 + 1 }
}

func decrList(l: [Int]) -> [Int] {
  return l.map { $0 - 1 }
}

func doubleList(l: [Int]) -> [Int] {
  return l.map { $0 * 2 }
}

func halfList(l: [Int]) -> [Double] {
  return l.map { Double($0) / 2 }
}

func tripleList(l: [Int]) -> [Int] {
  return l.map { $0 * 3 }
}

func quadrupleList(l: [Int]) -> [Int] {
  return l.map { $0 * 4 }
}

func quintupleList(l: [Int]) -> [Int] {
  return l.map { $0 * 5 }
}

func sextupleList(l: [Int]) -> [Int] {
  return l.map { $0 * 6 }
}
```swift
// Return array with elements incremented by 1.
// incrList(l: [1, 2, 3]) == [2, 3, 4]
// incrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [6, 4, 6, 3, 4, 4, 10, 1, 124]
func incrList(l: [Int]) -> [Int] {
  return l.map { $0 + 1 }
}

// Return array with elements decremented by 1.
// decrList(l: [1, 2, 3]) == [0, 1, 2]
// decrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [4, 2, 5, 1, 2, 2, 8, 1, 122]
func decrList(l: [Int]) -> [Int] {
  return l.map { $0 - 1 }
}

// Return array with elements multiplied by 2.
// doubleList(l: [1, 2, 3]) == [2, 4, 6]
// doubleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [10, 6, 10, 4, 6, 6, 18, 0, 246]
func doubleList(l: [Int]) -> [Int] {
  return l.map { $0 * 2 }
}

// Return array with elements divided by 2.
// halfList(l: [1, 2, 3]) == [0.5, 1, 1.5]
// halfList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [2.5, 1.5, 2.5, 1, 1.5, 1.5, 4.5, 0.5, 61.5]
func halfList(l: [Int]) -> [Double] {
  return l.map { Double($0) / 2 }
}

// Return array with elements multiplied by 2 and incremented by 1.
// tripleList(l: [1, 2, 3]) == [3, 5, 7]
// tripleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [10, 7, 11, 4, 7, 7, 18, 1, 247]
func tripleList(l: [Int]) -> [Int] {
  return l.map { $0 * 3 }
}

// Return array with elements multiplied by 2 and decremented by 1.
// quadrupleList(l: [1, 2, 3]) == [2, 4, 6]
// quadrupleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [10, 6, 10, 4, 6, 6, 18, 1, 122]
func quadrupleList(l: [Int]) -> [Int] {
  return l.map { $0 * 4 }
}

// Return array with elements multiplied by 2 and incremented by 1.
// quintupleList(l: [1, 2, 3]) == [3, 5, 7]
// quintupleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [10, 7, 11, 4, 7, 7, 18, 1, 247]
func quintupleList(l: [Int]) -> [Int] {
  return l.map { $0 * 5 }
}

// Return array with elements multiplied by 2 and decremented by 1.
// sextupleList(l: [1, 2, 3]) == [2, 4, 6]
// sextupleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [10, 6, 10, 4, 6, 6, 18, 1, 122]
func sextupleList(l: [Int]) -> [Int] {
  return l.map { $0 * 6 }
}

// Return array with

func incrList(l: [Int]) -> [Int] {
    return l.map { $0 + 1 }
}

func decrList(l: [Int]) -> [Int] {
    return l.map { $0 - 1 }
}

func doubleList(l: [Int]) -> [Int] {
    return l.map { $0 * 2 }
}

func halfList(l: [Int]) -> [Double] {
    return l.map { Double($0) / 2 }
}

func tripleAndIncList(l: [Int]) -> [Int] {
    return l.map { $0 * 3 + 1 }
}

func tripleAndDecList(l: [Int]) -> [Int] {
    return l.map { $0 * 3 - 1 }
}

func tripleAndHalfList(l: [Int]) -> [Double] {
    return l.map { Double($0) * 3 / 2 }
}
```swift
// Return array with elements incremented by 1.
// incrList(l: [1, 2, 3]) == [2, 3, 4]
// incrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [6, 4, 6, 3, 4, 4, 10, 1, 124]
func incrList(l: [Int]) -> [Int] {
    return l.map { $0 + 1 }
}

// Return array with elements decremented by 1.
// decrList(l: [1, 2, 3]) == [0, 1, 2]
// decrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [4, 2, 5, 1, 2, 2, 8, 1, 122]
func decrList(l: [Int]) -> [Int] {
    return l.map { $0 - 1 }
}

// Return array with elements multiplied by 2.
// doubleList(l: [1, 2, 3]) == [2, 4, 6]
// doubleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [10, 6, 10, 4, 6, 6, 18, 0, 246]
func doubleList(l: [Int]) -> [Int] {
    return l.map { $0 * 2 }
}

// Return array with elements divided by 2.
// halfList(l: [1, 2, 3]) == [0.5, 1.0, 1.5]
// halfList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [2.5, 1.5, 2.5, 1.0, 1.5, 1.5, 4.5, 0.5, 61.5]
func halfList(l: [Int]) -> [Double] {
    return l.map { Double($0) / 2 }
}

// Return array with elements multiplied by 2 and incremented by 1.
// tripleAndIncList(l: [1, 2, 3]) == [3, 4, 5]
// tripleAndIncList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [8, 5, 8, 4, 5, 5, 18, 1, 124]
func tripleAndIncList(l: [Int]) -> [Int] {
    return l.map { $0 * 3 + 1 }
}

// Return array with elements multiplied by 2 and decremented by 1.
// tripleAndDecList(l: [1, 2, 3]) == [0, 1, 2]
// tripleAndDecList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [10, 3, 5, 1, 3, 3, 18, 1, 122]
func tripleAndDecList(l: [Int]) -> [Int] {
    return l.map { $0 * 3 - 1 }
}

// Return array with elements multiplied by 2 and divided by 2.
// tripleAndHalfList(l: [1, 2, 3]) == [0.5, 1.0, 1.5]
// tripleAndHalfList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [2.5, 1.5, 2.5, 1.0, 1.5, 1.5, 4.5, 0.5, 61.5]
func tripleAndHalfList(l: [Int]) -> [Double] {
    return l.map { Double($0) * 3 / 2 }
}

// Return array with elements multiplied by 2 and incremented by 1.
// tripleAndIncList(l: [1, 2, 3]) == [3, 4, 5]
// tripleAndIncList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [8, 5, 8, 4, 5, 5, 18, 

func incrList(l: [Int]) -> [Int] {
  return l.map { $0 + 1 }
}

func decrList(l: [Int]) -> [Int] {
  return l.map { $0 - 1 }
}

func doubleList(l: [Int]) -> [Int] {
  return l.map { $0 * 2 }
}

func halfList(l: [Int]) -> [Double] {
  return l.map { Double($0) / 2 }
}

func tripleAndIncrList(l: [Int]) -> [Int] {
  return l.map { $0 * 3 + 1 }
}

func tripleAndDecrList(l: [Int]) -> [Int] {
  return l.map { $0 * 3 - 1 }
}

func tripleAndHalfList(l: [Int]) -> [Double] {
  return l.map { Double($0) * 3 / 2 }
}
```swift
// Return array with elements incremented by 1.
// incrList(l: [1, 2, 3]) == [2, 3, 4]
// incrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [6, 4, 6, 3, 4, 4, 10, 1, 124]
func incrList(l: [Int]) -> [Int] {
  return l.map { $0 + 1 }
}

// Return array with elements decremented by 1.
// decrList(l: [1, 2, 3]) == [0, 1, 2]
// decrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [4, 2, 5, 1, 3, 3, 8, 1, 122]
func decrList(l: [Int]) -> [Int] {
  return l.map { $0 - 1 }
}

// Return array with elements multiplied by 2.
// doubleList(l: [1, 2, 3]) == [2, 4, 6]
// doubleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [10, 6, 10, 4, 6, 6, 18, 0, 246]
func doubleList(l: [Int]) -> [Int] {
  return l.map { $0 * 2 }
}

// Return array with elements divided by 2.
// halfList(l: [1, 2, 3]) == [0, 1, 1.5]
// halfList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [2.5, 1.5, 2.5, 1.5, 1.5, 1.5, 4.5, 0, 61.5]
func halfList(l: [Int]) -> [Double] {
  return l.map { Double($0) / 2 }
}

// Return array with elements multiplied by 2 and incremented by 1.
// tripleAndIncrList(l: [1, 2, 3]) == [3, 4, 5]
// tripleAndIncrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [10, 6, 11, 4, 6, 6, 18, 1, 124]
func tripleAndIncrList(l: [Int]) -> [Int] {
  return l.map { $0 * 3 + 1 }
}

// Return array with elements multiplied by 2 and decremented by 1.
// tripleAndDecrList(l: [1, 2, 3]) == [0, 1, 2]
// tripleAndDecrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [10, 2, 6, 1, 3, 3, 8, 1, 122]
func tripleAndDecrList(l: [Int]) -> [Int] {
  return l.map { $0 * 3 - 1 }
}

// Return array with elements multiplied by 2 and divided by 2.
// tripleAndHalfList(l: [1, 2, 3]) == [0, 1, 1.5]
// tripleAndHalfList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [2.5, 1.5, 2.5, 1.5, 1.5, 1.5, 4.5, 0, 61.5]
func tripleAndHalfList(l: [Int]) -> [Double] {
  return l.map { Double($0) * 3 / 2 }
}

// Return array with elements multiplied by 2 and incremented by 1.
// tripleAndIncrList(l: [1, 2, 3]) == [3, 4, 5]
// tripleAndIncrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [10, 6, 11, 4, 6, 6, 18, 1

func incrList(l: [Int]) -> [Int] {
  return l.map { $0 + 1 }
}

func decrList(l: [Int]) -> [Int] {
  return l.map { $0 - 1 }
}

func doubleList(l: [Int]) -> [Int] {
  return l.map { $0 * 2 }
}

func halfList(l: [Int]) -> [Double] {
  return l.map { Double($0) / 2 }
}

func tripleList(l: [Int]) -> [Int] {
  return l.map { $0 * 3 }
}

func quadrupleList(l: [Int]) -> [Int] {
  return l.map { $0 * 4 }
}
```swift
// Return array with elements incremented by 1.
// incrList(l: [1, 2, 3]) == [2, 3, 4]
// incrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [6, 4, 6, 3, 4, 4, 10, 1, 124]
func incrList(l: [Int]) -> [Int] {
  return l.map { $0 + 1 }
}

// Return array with elements decremented by 1.
// decrList(l: [1, 2, 3]) == [0, 1, 2]
// decrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [4, 2, 5, 1, 3, 3, 8, 1, 122]
func decrList(l: [Int]) -> [Int] {
  return l.map { $0 - 1 }
}

// Return array with elements multiplied by 2.
// doubleList(l: [1, 2, 3]) == [2, 4, 6]
// doubleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [10, 6, 10, 4, 6, 6, 18, 0, 246]
func doubleList(l: [Int]) -> [Int] {
  return l.map { $0 * 2 }
}

// Return array with elements divided by 2.
// halfList(l: [1, 2, 3]) == [0.5, 1, 1.5]
// halfList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [2.5, 1.5, 2.5, 1.0, 1.5, 1.5, 4.5, 0.5, 61.5]
func halfList(l: [Int]) -> [Double] {
  return l.map { Double($0) / 2 }
}

// Return array with elements multiplied by 3.
// tripleList(l: [1, 2, 3]) == [3, 6, 9]
// tripleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [15, 9, 15, 6, 9, 9, 27, 0, 369]
func tripleList(l: [Int]) -> [Int] {
  return l.map { $0 * 3 }
}

// Return array with elements multiplied by 2.
// doubleList(l: [1, 2, 3]) == [2, 4, 6]
// doubleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [10, 6, 10, 4, 6, 6, 18, 0, 246]
func doubleList(l: [Int]) -> [Int] {
  return l.map { $0 * 2 }
}

// Return array with elements multiplied by 3.
// tripleList(l: [1, 2, 3]) == [3, 6, 9]
// tripleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [15, 9, 15, 6, 9, 9, 27, 0, 369]
func tripleList(l: [Int]) -> [Int] {
  return l.map { $0 * 3 }
}

// Return array with elements multiplied by 4.
// quadrupleList(l: [1, 2, 3]) == [4, 8, 12]
// quadrupleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [20, 12, 20, 8, 12, 12, 36, 0, 432]
func quadrupleList(l: [Int]) -> [Int] {
  return l.map { $0 * 4 }
}

// Return array with elements multiplied by 5.
// quintupleList(l: [1, 2, 3]) == [5

func incrList(l: [Int]) -> [Int] {
    return l.map { $0 + 1 }
}

func decrList(l: [Int]) -> [Int] {
    return l.map { $0 - 1 }
}

func doubleList(l: [Int]) -> [Int] {
    return l.map { $0 * 2 }
}

func tripleList(l: [Int]) -> [Int] {
    return l.map { $0 * 3 }
}

func quadrupleList(l: [Int]) -> [Int] {
    return l.map { $0 * 4 }
}

func quintupleList(l: [Int]) -> [Int] {
    return l.map { $0 * 5 }
}

func sextupleList(l: [Int]) -> [Int] {
    return l.map { $0 * 6 }
}

func septupleList(l: [Int]) -> [Int] {
    return l.map { $0 * 7 }
}
```swift
// Return array with elements incremented by 1.
// incrList(l: [1, 2, 3]) == [2, 3, 4]
// incrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [6, 4, 6, 3, 4, 4, 10, 1, 124]
func incrList(l: [Int]) -> [Int] {
    return l.map { $0 + 1 }
}

// Return array with elements decremented by 1.
// decrList(l: [1, 2, 3]) == [0, 1, 2]
// decrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [4, 2, 5, 1, 2, 2, 8, 1, 122]
func decrList(l: [Int]) -> [Int] {
    return l.map { $0 - 1 }
}

// Return array with elements multiplied by 2.
// doubleList(l: [1, 2, 3]) == [2, 4, 6]
// doubleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [10, 6, 10, 4, 6, 6, 18, 0, 246]
func doubleList(l: [Int]) -> [Int] {
    return l.map { $0 * 2 }
}

// Return array with elements multiplied by 3.
// tripleList(l: [1, 2, 3]) == [3, 6, 9]
// tripleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [15, 9, 15, 6, 9, 9, 27, 0, 369]
func tripleList(l: [Int]) -> [Int] {
    return l.map { $0 * 3 }
}

// Return array with elements multiplied by 4.
// quadrupleList(l: [1, 2, 3]) == [4, 8, 12]
// quadrupleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [20, 12, 20, 8, 12, 12, 36, 0, 432]
func quadrupleList(l: [Int]) -> [Int] {
    return l.map { $0 * 4 }
}

// Return array with elements multiplied by 5.
// quintupleList(l: [1, 2, 3]) == [5, 10, 15]
// quintupleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [25, 15, 25, 10, 15, 15, 45, 0, 675]
func quintupleList(l: [Int]) -> [Int] {
    return l.map { $0 * 5 }
}

// Return array with elements multiplied by 6.
// sextupleList(l: [1, 2, 3]) == [6, 12, 18]
// sextupleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [30, 18, 30, 12, 18, 18, 72, 0, 1080]
func sextupleList(l: [Int]) -> [Int] {
    return l.map { $0 * 6 }
}

// Return array with elements multiplied by 7.
// septupleList(l: [1, 2, 3]) == [7, 14, 21]
// septupleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [35, 21, 35, 14, 21, 21, 105, 0, 1625]
func septupleList(l: [Int]) -> [Int] {
    return l.map { $0 * 7 }
}

// Return array with elements multiplied by 8.
// octupleList(l

func incrList(l: [Int]) -> [Int] {
  return l.map { $0 + 1 }
}

func decrList(l: [Int]) -> [Int] {
  return l.map { $0 - 1 }
}

func doubleList(l: [Int]) -> [Int] {
  return l.map { $0 * 2 }
}

func halfList(l: [Int]) -> [Double] {
  return l.map { Double($0) / 2.0 }
}

func doubleIncrList(l: [Int]) -> [Int] {
  return l.map { $0 * 2 + 1 }
}

func doubleDecrList(l: [Int]) -> [Int] {
  return l.map { $0 * 2 - 1 }
}

func doubleHalfList(l: [Int]) -> [Double] {
  return l.map { Double($0) * 2.0 / 2.0 }
}
```swift
// Return array with elements incremented by 1.
// incrList(l: [1, 2, 3]) == [2, 3, 4]
// incrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [6, 4, 6, 3, 4, 4, 10, 1, 124]
func incrList(l: [Int]) -> [Int] {
  return l.map { $0 + 1 }
}

// Return array with elements decremented by 1.
// decrList(l: [1, 2, 3]) == [0, 1, 2]
// decrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [4, 2, 4, 1, 2, 2, 8, 1, 122]
func decrList(l: [Int]) -> [Int] {
  return l.map { $0 - 1 }
}

// Return array with elements multiplied by 2.
// doubleList(l: [1, 2, 3]) == [2, 4, 6]
// doubleList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [10, 6, 10, 4, 6, 6, 18, 0, 246]
func doubleList(l: [Int]) -> [Int] {
  return l.map { $0 * 2 }
}

// Return array with elements divided by 2.
// halfList(l: [1, 2, 3]) == [0.5, 1.0, 1.5]
// halfList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [2.5, 1.5, 2.5, 1.0, 1.5, 1.5, 4.5, 0.5, 61.5]
func halfList(l: [Int]) -> [Double] {
  return l.map { Double($0) / 2.0 }
}

// Return array with elements multiplied by 2 and incremented by 1.
// doubleIncrList(l: [1, 2, 3]) == [3, 4, 5]
// doubleIncrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [7, 5, 7, 4, 5, 5, 18, 1, 125]
func doubleIncrList(l: [Int]) -> [Int] {
  return l.map { $0 * 2 + 1 }
}

// Return array with elements multiplied by 2 and decremented by 1.
// doubleDecrList(l: [1, 2, 3]) == [0, 1, 2]
// doubleDecrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [10, 1, 10, 2, 3, 3, 18, 1, 121]
func doubleDecrList(l: [Int]) -> [Int] {
  return l.map { $0 * 2 - 1 }
}

// Return array with elements multiplied by 2 and divided by 2.
// doubleHalfList(l: [1, 2, 3]) == [0.5, 1.0, 1.5]
// doubleHalfList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [2.5, 1.5, 2.5, 1.0, 1.5, 1.5, 4.5, 0.5, 61.5]
func doubleHalfList(l: [Int]) -> [Double] {
  return l.map { Double($0) * 2.0 / 2.0 }
}

// Return array with elements multiplied by 2 and incremented by 1.
// doubleIncrList(l: [1, 2, 3]) == [3, 4, 5]
// doubleIncrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [7, 5, 7, 4, 5, 5, 

func incrList(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        result.append(i + 1)
    }
    return result
}
```swift
// Return array with elements incremented by 1.
// incrList(l: [1, 2, 3]) == [2, 3, 4]
// incrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [6, 4, 6, 3, 4, 4, 10, 1, 124]
func incrList(l: [Int]) -> [Int] {
    var result = [Int]()
    for i in l {
        result.append(i + 1)
    }
    return result
}
<|file_separator|>

func pairsSumToZero(l: [Int]) -> Bool {
  var set = Set<Int>()
  for i in l {
    if set.contains(i * -1) {
      return true
    }
    set.insert(i)
  }
  return false
}

func pairsSumToZero2(l: [Int]) -> Bool {
  var set = Set<Int>()
  for i in l {
    if set.contains(i * -1) {
      return true
    }
    set.insert(i)
  }
  return false
}

func pairsSumToZero3(l: [Int]) -> Bool {
  var set = Set<Int>()
  for i in l {
    if set.contains(i * -1) {
      return true
    }
    set.insert(i)
  }
  return false
}

func pairsSumToZero4(l: [Int]) -> Bool {
  var set = Set<Int>()
  for i in l {
    if set.contains(i * -1) {
      return true
    }
    set.insert(i)
  }
  return false
}

func pairsSumToZero5(l: [Int]) -> Bool {
  var set = Set<Int>()
  for i in l {
    if set.contains(i * -1) {
      return true
    }
    set.insert(i)
  }
  return false
}
```swift
// pairs_sum_to_zero takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero(l: [1, 3, 5, 0]) == false
// pairsSumToZero(l: [1, 3, -2, 1]) == false
// pairsSumToZero(l: [1, 2, 3, 7]) == false
// pairsSumToZero(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero(l: [1]) == false
func pairsSumToZero(l: [Int]) -> Bool {
  var set = Set<Int>()
  for i in l {
    if set.contains(i * -1) {
      return true
    }
    set.insert(i)
  }
  return false
}

// pairs_sum_to_zero_2 takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero2(l: [1, 3, 5, 0]) == false
// pairsSumToZero2(l: [1, 3, -2, 1]) == false
// pairsSumToZero2(l: [1, 2, 3, 7]) == false
// pairsSumToZero2(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero2(l: [1]) == false
func pairsSumToZero2(l: [Int]) -> Bool {
  var set = Set<Int>()
  for i in l {
    if set.contains(i * -1) {
      return true
    }
    set.insert(i)
  }
  return false
}

// pairs_sum_to_zero_3 takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero3(l: [1, 3, 5, 0]) == false
// pairsSumToZero3(l: [1, 3, -2, 1]) == false
// pairsSumToZero3(l: [1, 2, 3, 7]) == false
// pairsSumToZero3(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero3(l: [1]) == false
func pairsSumToZero3(l: [Int]) -> Bool {
  var set = Set<Int>()
  for i in l {
    if set.contains(i * -1) {
      return true
    }
    set.insert(i)
  }
  return false
}

// pairs_sum_to_zero_4 takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero4(l: [1, 3, 5, 0]) == false
// pairsSumToZero4(l: [1, 3, -2, 1]) == false
// pairsSumToZero4(l: [1, 2, 3, 7]) == false
// pairsSumToZero4(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero4(l: [1]) == false
func pairsSumToZero4(l: [Int]) -> Bool {
  var set = Set<Int>()
  for i in l {
    if set.contains(i * -1) {
      return true
    }
    set.insert(i)
  }
  return false
}

// pairs_sum_to_zero_5 takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero5(l: [1, 3, 5, 0]) == false
// pairsSumToZero5(l: [1, 3, -2, 1]) == false
// pairsSumToZero5(l: [1, 2, 3, 7]) == false
// pairsSumToZero5(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero5(l: [1]) == false
func pairsSumToZero5(l: [Int]) -> Bool {
  var set = Set<Int>()
  for i in l {
    if set.contains(i * -1) {
      return true
    }
    set.insert(i)
  }
  return false
}

// pairs_sum_to_zero_6 takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
//

func pairsSumToZero(l: [Int]) -> Bool {
    var seen = Set<Int>()
    for i in l {
        if seen.contains(0 - i) {
            return true
        }
        seen.insert(i)
    }
    return false
}
```swift
// pairs_sum_to_zero takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero(l: [1, 3, 5, 0]) == false
// pairsSumToZero(l: [1, 3, -2, 1]) == false
// pairsSumToZero(l: [1, 2, 3, 7]) == false
// pairsSumToZero(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero(l: [1]) == false
func pairsSumToZero(l: [Int]) -> Bool {
    var seen = Set<Int>()
    for i in l {
        if seen.contains(0 - i) {
            return true
        }
        seen.insert(i)
    }
    return false
}
<|file_separator|>

func pairsSumToZero(l: [Int]) -> Bool {
  // TODO: implement this function
  return false
}
```swift
// pairs_sum_to_zero takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero(l: [1, 3, 5, 0]) == false
// pairsSumToZero(l: [1, 3, -2, 1]) == false
// pairsSumToZero(l: [1, 2, 3, 7]) == false
// pairsSumToZero(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero(l: [1]) == false
func pairsSumToZero(l: [Int]) -> Bool {
  // TODO: implement this function
  return false
}
<|file_separator|>
 // XCTAssertTrue failed

func pairsSumToZero(l: [Int]) -> Bool {
    var pairs = [Int]()
    for i in 0..<l.count {
        for j in 0..<l.count {
            if l[i] + l[j] == 0 {
                pairs.append(l[i])
                pairs.append(l[j])
            }
        }
    }
    if pairs.count == 0 {
        return false
    } else {
        return true
    }
}
```swift
// pairs_sum_to_zero takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero(l: [1, 3, 5, 0]) == false
// pairsSumToZero(l: [1, 3, -2, 1]) == false
// pairsSumToZero(l: [1, 2, 3, 7]) == false
// pairsSumToZero(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero(l: [1]) == false
func pairsSumToZero(l: [Int]) -> Bool {
    var pairs = [Int]()
    for i in 0..<l.count {
        for j in 0..<l.count {
            if l[i] + l[j] == 0 {
                pairs.append(l[i])
                pairs.append(l[j])
            }
        }
    }
    if pairs.count == 0 {
        return false
    } else {
        return true
    }
}
<|file_separator|>
 // XCTAssertTrue failed

func pairsSumToZero(l: [Int]) -> Bool {
    var pairs = [Int]()
    for i in 0..<l.count {
        for j in 0..<l.count {
            if l[i] + l[j] == 0 {
                pairs.append(l[i])
                pairs.append(l[j])
            }
        }
    }
    return pairs.count > 1
}

func pairsSumToZero2(l: [Int]) -> Bool {
    var pairs = [Int]()
    for i in 0..<l.count {
        for j in 0..<l.count {
            if l[i] + l[j] == 0 {
                pairs.append(l[i])
                pairs.append(l[j])
            }
        }
    }
    return pairs.count > 1
}

func pairsSumToZero3(l: [Int]) -> Bool {
    var pairs = [Int]()
    for i in 0..<l.count {
        for j in 0..<l.count {
            if l[i] + l[j] == 0 {
                pairs.append(l[i])
                pairs.append(l[j])
            }
        }
    }
    return pairs.count > 1
}

func pairsSumToZero4(l: [Int]) -> Bool {
    var pairs = [Int]()
    for i in 0..<l.count {
        for j in 0..<l.count {
            if l[i] + l[j] == 0 {
                pairs.append(l[i])
                pairs.append(l[j])
            }
        }
    }
    return pairs.count > 1
}
```swift
// pairs_sum_to_zero takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero(l: [1, 3, 5, 0]) == false
// pairsSumToZero(l: [1, 3, -2, 1]) == false
// pairsSumToZero(l: [1, 2, 3, 7]) == false
// pairsSumToZero(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero(l: [1]) == false
func pairsSumToZero(l: [Int]) -> Bool {
    var pairs = [Int]()
    for i in 0..<l.count {
        for j in 0..<l.count {
            if l[i] + l[j] == 0 {
                pairs.append(l[i])
                pairs.append(l[j])
            }
        }
    }
    return pairs.count > 1
}

// pairs_sum_to_zero_2 takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero2(l: [1, 3, 5, 0]) == false
// pairsSumToZero2(l: [1, 3, -2, 1]) == false
// pairsSumToZero2(l: [1, 2, 3, 7]) == false
// pairsSumToZero2(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero2(l: [1]) == false
func pairsSumToZero2(l: [Int]) -> Bool {
    var pairs = [Int]()
    for i in 0..<l.count {
        for j in 0..<l.count {
            if l[i] + l[j] == 0 {
                pairs.append(l[i])
                pairs.append(l[j])
            }
        }
    }
    return pairs.count > 1
}

// pairs_sum_to_zero_3 takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero3(l: [1, 3, 5, 0]) == false
// pairsSumToZero3(l: [1, 3, -2, 1]) == false
// pairsSumToZero3(l: [1, 2, 3, 7]) == false
// pairsSumToZero3(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero3(l: [1]) == false
func pairsSumToZero3(l: [Int]) -> Bool {
    var pairs = [Int]()
    for i in 0..<l.count {
        for j in 0..<l.count {
            if l[i] + l[j] == 0 {
                pairs.append(l[i])
                pairs.append(l[j])
            }
        }
    }
    return pairs.count > 1
}

// pairs_sum_to_zero_4 takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero4(l: [1, 3, 5, 0]) == false
// pairsSumToZero4(l: [1, 3, -2, 1]) == false
// pairsSumToZero4(l: [1, 2, 3, 7]) == false
// pairsSumToZero4(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero4(l: [1]) == false
func pairsSumToZero4(l: [Int]) -> Bool {
    var pairs = [Int]()
    for i in 0..<l.count {
        for j in 0..<l.count {
            if l[i] + l[j] == 0 {
                pairs.append(l[i])
                pairs.append(l[j])
            }
        }
    }
    return pairs.count > 1
}

// pairs_sum_to_zero_5 takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero5(l: [1, 3, 5, 0]) == false
// pairsSumToZero5(l: [1, 3, -2, 1]) == false
// pairsSumToZero5(l: [1, 2, 3, 7]) == false
// pairsSumToZero5(l: [2, 4, -5, 3
 // XCTAssertTrue failed

func pairsSumToZero(l: [Int]) -> Bool {
  var seen = Set<Int>()
  for i in l {
    if seen.contains(i * -1) {
      return true
    }
    seen.insert(i)
  }
  return false
}

func pairsSumToZero2(l: [Int]) -> Bool {
  var seen = Set<Int>()
  for i in l {
    if seen.contains(i * -1) {
      return true
    }
    seen.insert(i)
  }
  return false
}

func pairsSumToZero3(l: [Int]) -> Bool {
  var seen = Set<Int>()
  for i in l {
    if seen.contains(i * -1) {
      return true
    }
    seen.insert(i)
  }
  return false
}

func pairsSumToZero4(l: [Int]) -> Bool {
  var seen = Set<Int>()
  for i in l {
    if seen.contains(i * -1) {
      return true
    }
    seen.insert(i)
  }
  return false
}

func pairsSumToZero5(l: [Int]) -> Bool {
  var seen = Set<Int>()
  for i in l {
    if seen.contains(i * -1) {
      return true
    }
    seen.insert(i)
  }
  return false
}
```swift
// pairs_sum_to_zero takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero(l: [1, 3, 5, 0]) == false
// pairsSumToZero(l: [1, 3, -2, 1]) == false
// pairsSumToZero(l: [1, 2, 3, 7]) == false
// pairsSumToZero(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero(l: [1]) == false
func pairsSumToZero(l: [Int]) -> Bool {
  var seen = Set<Int>()
  for i in l {
    if seen.contains(i * -1) {
      return true
    }
    seen.insert(i)
  }
  return false
}

// pairs_sum_to_zero_2 takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero2(l: [1, 3, 5, 0]) == false
// pairsSumToZero2(l: [1, 3, -2, 1]) == false
// pairsSumToZero2(l: [1, 2, 3, 7]) == false
// pairsSumToZero2(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero2(l: [1]) == false
func pairsSumToZero2(l: [Int]) -> Bool {
  var seen = Set<Int>()
  for i in l {
    if seen.contains(i * -1) {
      return true
    }
    seen.insert(i)
  }
  return false
}

// pairs_sum_to_zero_3 takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero3(l: [1, 3, 5, 0]) == false
// pairsSumToZero3(l: [1, 3, -2, 1]) == false
// pairsSumToZero3(l: [1, 2, 3, 7]) == false
// pairsSumToZero3(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero3(l: [1]) == false
func pairsSumToZero3(l: [Int]) -> Bool {
  var seen = Set<Int>()
  for i in l {
    if seen.contains(i * -1) {
      return true
    }
    seen.insert(i)
  }
  return false
}

// pairs_sum_to_zero_4 takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero4(l: [1, 3, 5, 0]) == false
// pairsSumToZero4(l: [1, 3, -2, 1]) == false
// pairsSumToZero4(l: [1, 2, 3, 7]) == false
// pairsSumToZero4(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero4(l: [1]) == false
func pairsSumToZero4(l: [Int]) -> Bool {
  var seen = Set<Int>()
  for i in l {
    if seen.contains(i * -1) {
      return true
    }
    seen.insert(i)
  }
  return false
}

// pairs_sum_to_zero_5 takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero5(l: [1, 3, 5, 0]) == false
// pairsSumToZero5(l: [1, 3, -2, 1]) == false
// pairsSumToZero5(l: [1, 2, 3, 7]) == false
// pairsSumToZero5(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero5(l: [1]) == false
func pairsSumToZero5(l: [Int]) -> Bool {
  var seen = Set<Int>()
  for i in l {
    if seen.contains(i * -1) {
      return true
    }
    seen.insert(i)
  }
  return false
}

// pairs_sum_to_zero_6 takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
//

func pairsSumToZero(l: [Int]) -> Bool {
    // create a dictionary to store the elements of the array
    // and their indices
    var dict: [Int: Int] = [:]
    for (i, v) in l.enumerated() {
        dict[v] = i
    }
    // create a set to store the elements of the array
    var s: Set<Int> = Set(l)
    // create a loop to check if there are any elements in the array
    // that sum to zero
    for v in l {
        // check if the element is in the dictionary
        if let i = dict[v * -1] {
            // check if the element is not the same as the index
            // of the element in the array
            if i != v {
                // return true
                return true
            }
        }
    }
    // return false
    return false
}
```swift
// pairs_sum_to_zero takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero(l: [1, 3, 5, 0]) == false
// pairsSumToZero(l: [1, 3, -2, 1]) == false
// pairsSumToZero(l: [1, 2, 3, 7]) == false
// pairsSumToZero(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero(l: [1]) == false
func pairsSumToZero(l: [Int]) -> Bool {
    // create a dictionary to store the elements of the array
    // and their indices
    var dict: [Int: Int] = [:]
    for (i, v) in l.enumerated() {
        dict[v] = i
    }
    // create a set to store the elements of the array
    var s: Set<Int> = Set(l)
    // create a loop to check if there are any elements in the array
    // that sum to zero
    for v in l {
        // check if the element is in the dictionary
        if let i = dict[v * -1] {
            // check if the element is not the same as the index
            // of the element in the array
            if i != v {
                // return true
                return true
            }
        }
    }
    // return false
    return false
}
<|file_separator|>
var s: Set<Int> = Set(l) // variable 's' was never used; consider replacing with '_' or removing it
 // XCTAssertTrue failed

func pairsSumToZero(l: [Int]) -> Bool {
    var seen = Set<Int>()
    for i in l {
        if seen.contains(i * -1) {
            return true
        }
        seen.insert(i)
    }
    return false
}
```swift
// pairs_sum_to_zero takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero(l: [1, 3, 5, 0]) == false
// pairsSumToZero(l: [1, 3, -2, 1]) == false
// pairsSumToZero(l: [1, 2, 3, 7]) == false
// pairsSumToZero(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero(l: [1]) == false
func pairsSumToZero(l: [Int]) -> Bool {
    var seen = Set<Int>()
    for i in l {
        if seen.contains(i * -1) {
            return true
        }
        seen.insert(i)
    }
    return false
}
<|file_separator|>

func pairsSumToZero(l: [Int]) -> Bool {
    // create a dictionary to store the elements of the array
    var dict = [Int: Bool]()
    // loop through the array
    for i in l {
        // check if the element is already in the dictionary
        if dict[i] == true {
            // if it is, return true
            return true
        }
        // if it is not, add it to the dictionary
        dict[i] = true
    }
    // if we get here, there are no pairs that sum to zero
    return false
}
```swift
// pairs_sum_to_zero takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero(l: [1, 3, 5, 0]) == false
// pairsSumToZero(l: [1, 3, -2, 1]) == false
// pairsSumToZero(l: [1, 2, 3, 7]) == false
// pairsSumToZero(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero(l: [1]) == false
func pairsSumToZero(l: [Int]) -> Bool {
    // create a dictionary to store the elements of the array
    var dict = [Int: Bool]()
    // loop through the array
    for i in l {
        // check if the element is already in the dictionary
        if dict[i] == true {
            // if it is, return true
            return true
        }
        // if it is not, add it to the dictionary
        dict[i] = true
    }
    // if we get here, there are no pairs that sum to zero
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func pairsSumToZero(l: [Int]) -> Bool {
    var seen = Set<Int>()
    for i in l {
        if seen.contains(i * -1) {
            return true
        }
        seen.insert(i)
    }
    return false
}

func pairsSumToZero2(l: [Int]) -> Bool {
    var seen = Set<Int>()
    for i in l {
        if seen.contains(i) {
            return true
        }
        seen.insert(i * -1)
    }
    return false
}

func pairsSumToZero3(l: [Int]) -> Bool {
    var seen = Set<Int>()
    for i in l {
        if seen.contains(i * -1) {
            return true
        }
        seen.insert(i)
    }
    return false
}

func pairsSumToZero4(l: [Int]) -> Bool {
    var seen = Set<Int>()
    for i in l {
        if seen.contains(i) {
            return true
        }
        seen.insert(i * -1)
    }
    return false
}

func pairsSumToZero5(l: [Int]) -> Bool {
    var seen = Set<Int>()
    for i in l {
        if seen.contains(i * -1) {
            return true
        }
        seen.insert(i)
    }
    return false
}
```swift
// pairs_sum_to_zero takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero(l: [1, 3, 5, 0]) == false
// pairsSumToZero(l: [1, 3, -2, 1]) == false
// pairsSumToZero(l: [1, 2, 3, 7]) == false
// pairsSumToZero(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero(l: [1]) == false
func pairsSumToZero(l: [Int]) -> Bool {
    var seen = Set<Int>()
    for i in l {
        if seen.contains(i * -1) {
            return true
        }
        seen.insert(i)
    }
    return false
}

// pairs_sum_to_zero_2 takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero2(l: [1, 3, 5, 0]) == false
// pairsSumToZero2(l: [1, 3, -2, 1]) == false
// pairsSumToZero2(l: [1, 2, 3, 7]) == false
// pairsSumToZero2(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero2(l: [1]) == false
func pairsSumToZero2(l: [Int]) -> Bool {
    var seen = Set<Int>()
    for i in l {
        if seen.contains(i) {
            return true
        }
        seen.insert(i * -1)
    }
    return false
}

// pairs_sum_to_zero_3 takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero3(l: [1, 3, 5, 0]) == false
// pairsSumToZero3(l: [1, 3, -2, 1]) == false
// pairsSumToZero3(l: [1, 2, 3, 7]) == false
// pairsSumToZero3(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero3(l: [1]) == false
func pairsSumToZero3(l: [Int]) -> Bool {
    var seen = Set<Int>()
    for i in l {
        if seen.contains(i * -1) {
            return true
        }
        seen.insert(i)
    }
    return false
}

// pairs_sum_to_zero_4 takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero4(l: [1, 3, 5, 0]) == false
// pairsSumToZero4(l: [1, 3, -2, 1]) == false
// pairsSumToZero4(l: [1, 2, 3, 7]) == false
// pairsSumToZero4(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero4(l: [1]) == false
func pairsSumToZero4(l: [Int]) -> Bool {
    var seen = Set<Int>()
    for i in l {
        if seen.contains(i) {
            return true
        }
        seen.insert(i * -1)
    }
    return false
}

// pairs_sum_to_zero_5 takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// pairsSumToZero5(l: [1, 3, 5, 0]) == false
// pairsSumToZero5(l: [1, 3, -2, 1]) == false
// pairsSumToZero5(l: [1, 2, 3, 7]) == false
// pairsSumToZero5(l: [2, 4, -5, 3, 5, 7]) == true
// pairsSumToZero5(l: [1]) == false
func pairsSumToZero5(l: [Int]) -> Bool {
    var seen = Set<Int>()
    for i in l {
        if seen.contains(i * -1) {
            return true
        }
        seen.insert(i)
    }
    return false
}

// pairs_sum_to_zero_6 takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
//

func changeBase(x: Int, base: Int) -> String {
  var x = x
  var base = base
  var result = ""
  while x > 0 {
    result = String(x % base) + result
    x = x / base
  }
  return result
}

func changeBase(x: String, base: Int) -> Int {
  var x = x
  var base = base
  var result = 0
  var power = 0
  while x.count > 0 {
    let digit = Int(String(x.last!))!
    result += digit * pow(base, power)
    power += 1
    x = String(x.dropLast())
  }
  return result
}
```swift
// Change numerical base of input number x to base.
// return string representation after the conversion.
// base numbers are less than 10.
// changeBase(x: 8, base: 3) == "22"
// changeBase(x: 8, base: 2) == "1000"
// changeBase(x: 7, base: 2) == "111"
func changeBase(x: Int, base: Int) -> String {
  var x = x
  var base = base
  var result = ""
  while x > 0 {
    result = String(x % base) + result
    x = x / base
  }
  return result
}

// Change base of input string x to base.
// return integer representation after the conversion.
// base numbers are less than 10.
// changeBase(x: "22", base: 3) == 8
// changeBase(x: "1000", base: 2) == 8
// changeBase(x: "111", base: 2) == 7
func changeBase(x: String, base: Int) -> Int {
  var x = x
  var base = base
  var result = 0
  var power = 0
  while x.count > 0 {
    let digit = Int(String(x.last!))!
    result += digit * pow(base, power)
    power += 1
    x = String(x.dropLast())
  }
  return result
}
<|file_separator|>
var base = base // variable 'base' was never mutated; consider changing to 'let' constant
result += digit * pow(base, power) // cannot convert value of type 'Decimal' to expected argument type 'Int'
result += digit * pow(base, power) // cannot convert value of type 'Int' to expected argument type 'Decimal'

func changeBase(x: Int, base: Int) -> String {
  var x = x
  var base = base
  var result = ""
  while x > 0 {
    let remainder = x % base
    x = x / base
    if remainder < 10 {
      result = String(remainder) + result
    } else {
      result = String(Character(UnicodeScalar(remainder + 55)!) ) + result
    }
  }
  return result
}
```swift
// Change numerical base of input number x to base.
// return string representation after the conversion.
// base numbers are less than 10.
// changeBase(x: 8, base: 3) == "22"
// changeBase(x: 8, base: 2) == "1000"
// changeBase(x: 7, base: 2) == "111"
func changeBase(x: Int, base: Int) -> String {
  var x = x
  var base = base
  var result = ""
  while x > 0 {
    let remainder = x % base
    x = x / base
    if remainder < 10 {
      result = String(remainder) + result
    } else {
      result = String(Character(UnicodeScalar(remainder + 55)!) ) + result
    }
  }
  return result
}
<|file_separator|>
var base = base // variable 'base' was never mutated; consider changing to 'let' constant

func changeBase(x: Int, base: Int) -> String {
  var x = x
  var base = base
  var result = ""
  
  while x > 0 {
    let remainder = x % base
    result = String(remainder) + result
    x = x / base
  }
  
  return result
}
```swift
// Change numerical base of input number x to base.
// return string representation after the conversion.
// base numbers are less than 10.
// changeBase(x: 8, base: 3) == "22"
// changeBase(x: 8, base: 2) == "1000"
// changeBase(x: 7, base: 2) == "111"
func changeBase(x: Int, base: Int) -> String {
  var x = x
  var base = base
  var result = ""
  
  while x > 0 {
    let remainder = x % base
    result = String(remainder) + result
    x = x / base
  }
  
  return result
}
<|file_separator|>
var base = base // variable 'base' was never mutated; consider changing to 'let' constant

func changeBase(x: Int, base: Int) -> String {
    var x = x
    var base = base
    var result = ""
    while x > 0 {
        let remainder = x % base
        result = String(remainder) + result
        x = x / base
    }
    return result
}
```swift
// Change numerical base of input number x to base.
// return string representation after the conversion.
// base numbers are less than 10.
// changeBase(x: 8, base: 3) == "22"
// changeBase(x: 8, base: 2) == "1000"
// changeBase(x: 7, base: 2) == "111"
func changeBase(x: Int, base: Int) -> String {
    var x = x
    var base = base
    var result = ""
    while x > 0 {
        let remainder = x % base
        result = String(remainder) + result
        x = x / base
    }
    return result
}
<|file_separator|>
var base = base // variable 'base' was never mutated; consider changing to 'let' constant

func changeBase(x: Int, base: Int) -> String {
    var result = ""
    var x = x
    while x > 0 {
        let remainder = x % base
        result = String(remainder) + result
        x = x / base
    }
    return result
}
```swift
// Change numerical base of input number x to base.
// return string representation after the conversion.
// base numbers are less than 10.
// changeBase(x: 8, base: 3) == "22"
// changeBase(x: 8, base: 2) == "1000"
// changeBase(x: 7, base: 2) == "111"
func changeBase(x: Int, base: Int) -> String {
    var result = ""
    var x = x
    while x > 0 {
        let remainder = x % base
        result = String(remainder) + result
        x = x / base
    }
    return result
}

// Change numerical base of input number x to base.
// return string representation after the conversion.
// base numbers are less than 10.
// changeBase(x: 8, base: 3) == "22"
// changeBase(x: 8, base: 2) == "1000"
// changeBase(x: 7, base: 2) == "111"
func changeBase(x: Int, base: Int) -> String {
    var result = ""
    var x = x
    while x > 0 {
        let remainder = x % base
        result = String(remainder) + result
        x = x / base
    }
    return result
}
<|file_separator|>

func changeBase(x: Int, base: Int) -> String {
    var x = x
    var base = base
    var result = ""
    while x > 0 {
        let remainder = x % base
        result = String(remainder) + result
        x = x / base
    }
    return result
}
```swift
// Change numerical base of input number x to base.
// return string representation after the conversion.
// base numbers are less than 10.
// changeBase(x: 8, base: 3) == "22"
// changeBase(x: 8, base: 2) == "1000"
// changeBase(x: 7, base: 2) == "111"
func changeBase(x: Int, base: Int) -> String {
    var x = x
    var base = base
    var result = ""
    while x > 0 {
        let remainder = x % base
        result = String(remainder) + result
        x = x / base
    }
    return result
}
<|file_separator|>
var base = base // variable 'base' was never mutated; consider changing to 'let' constant

func changeBase(x: Int, base: Int) -> String {
    var x = x
    var result = ""
    while x > 0 {
        let remainder = x % base
        x = x / base
        result = String(remainder) + result
    }
    return result
}
```swift
// Change numerical base of input number x to base.
// return string representation after the conversion.
// base numbers are less than 10.
// changeBase(x: 8, base: 3) == "22"
// changeBase(x: 8, base: 2) == "1000"
// changeBase(x: 7, base: 2) == "111"
func changeBase(x: Int, base: Int) -> String {
    var x = x
    var result = ""
    while x > 0 {
        let remainder = x % base
        x = x / base
        result = String(remainder) + result
    }
    return result
}
<|file_separator|>

func changeBase(x: Int, base: Int) -> String {
  var x = x
  var base = base
  var result = ""
  while x > 0 {
    let remainder = x % base
    result = String(remainder) + result
    x = x / base
  }
  return result
}
```swift
// Change numerical base of input number x to base.
// return string representation after the conversion.
// base numbers are less than 10.
// changeBase(x: 8, base: 3) == "22"
// changeBase(x: 8, base: 2) == "1000"
// changeBase(x: 7, base: 2) == "111"
func changeBase(x: Int, base: Int) -> String {
  var x = x
  var base = base
  var result = ""
  while x > 0 {
    let remainder = x % base
    result = String(remainder) + result
    x = x / base
  }
  return result
}
<|file_separator|>
var base = base // variable 'base' was never mutated; consider changing to 'let' constant

func changeBase(x: Int, base: Int) -> String {
    var x = x
    var base = base
    var result = ""
    while x > 0 {
        let remainder = x % base
        result = String(remainder) + result
        x = x / base
    }
    return result
}
```swift
// Change numerical base of input number x to base.
// return string representation after the conversion.
// base numbers are less than 10.
// changeBase(x: 8, base: 3) == "22"
// changeBase(x: 8, base: 2) == "1000"
// changeBase(x: 7, base: 2) == "111"
func changeBase(x: Int, base: Int) -> String {
    var x = x
    var base = base
    var result = ""
    while x > 0 {
        let remainder = x % base
        result = String(remainder) + result
        x = x / base
    }
    return result
}
<|file_separator|>
var base = base // variable 'base' was never mutated; consider changing to 'let' constant

func changeBase(x: Int, base: Int) -> String {
  var x = x
  var base = base
  var result = ""
  while x > 0 {
    let remainder = x % base
    result = String(remainder) + result
    x = x / base
  }
  return result
}
```swift
// Change numerical base of input number x to base.
// return string representation after the conversion.
// base numbers are less than 10.
// changeBase(x: 8, base: 3) == "22"
// changeBase(x: 8, base: 2) == "1000"
// changeBase(x: 7, base: 2) == "111"
func changeBase(x: Int, base: Int) -> String {
  var x = x
  var base = base
  var result = ""
  while x > 0 {
    let remainder = x % base
    result = String(remainder) + result
    x = x / base
  }
  return result
}
<|file_separator|>
var base = base // variable 'base' was never mutated; consider changing to 'let' constant

func triangleArea(a: Int, h: Int) -> Double {
    return Double(a) * Double(h) / 2
}

func vowels(str: String) -> Int {
    return str.filter { "aeiou".contains($0) }.count
}

func consonants(str: String) -> Int {
    return str.filter { !("aeiou".contains($0)) }.count
}

func words(str: String) -> Int {
    return str.split(separator: " ").count
}

func wordsLongerThan3(str: String) -> Int {
    return str.split(separator: " ").filter { $0.count > 3 }.count
}

func wordsLongerThan3(str: String, _ words: String...) -> Int {
    return str.split(separator: " ").filter { $0.count > 3 }.filter { !words.contains($0) }.count
}
```swift
// Given length of a side and high return area for a triangle.
// triangleArea(a: 5, h: 3) == 7.5
func triangleArea(a: Int, h: Int) -> Double {
    return Double(a) * Double(h) / 2
}

// Given a string, return the number of vowels in the string.
// vowels("hello") == 2
func vowels(str: String) -> Int {
    return str.filter { "aeiou".contains($0) }.count
}

// Given a string, return the number of consonants in the string.
// consonants("hello") == 3
func consonants(str: String) -> Int {
    return str.filter { !("aeiou".contains($0)) }.count
}

// Given a string, return the number of words in the string.
// words("hello") == 1
func words(str: String) -> Int {
    return str.split(separator: " ").count
}

// Given a string, return the number of words in the string,
// but only if the word is longer than 3 characters.
// wordsLongerThan3("hello") == 0
// wordsLongerThan3("hello world") == 2
func wordsLongerThan3(str: String) -> Int {
    return str.split(separator: " ").filter { $0.count > 3 }.count
}

// Given a string, return the number of words in the string,
// but only if the word is longer than 3 characters,
// and the word is not the first or last word.
// wordsLongerThan3("hello world") == 2
// wordsLongerThan3("hello", "world") == 1
func wordsLongerThan3(str: String, _ words: String...) -> Int {
    return str.split(separator: " ").filter { $0.count > 3 }.filter { !words.contains($0) }.count
}

// Given a string, return the number of words in the string,
// but only if the word is longer than 3 characters,
// and the word is not the first or last word.
// wordsLongerThan3("hello world") == 2
// wordsLongerThan3("hello", "world") == 1
func wordsLongerThan3(str: String, _ words: String...) -> Int {
    return str.split(separator: " ").filter { $0.count > 3 }.filter { !words.contains($0) }.count
}

// Given a string, return the number of words in the string,
// but only if the word is longer than 3 characters,
// and the word is not the first or last word.
// wordsLongerThan3("hello world") == 2
// wordsLongerThan3("hello", "world") == 1
func wordsLongerThan3(str: String, _ words: String...) -> Int {
    return str.split(separator: " ").filter { $0.count > 3 }.filter { !words.contains($0) }.count
}

// Given a string, return the number of words in the string,
// but only if the word is longer than 3 characters,
// and the word is not the first or last word.
// wordsLongerThan3("hello world") == 2
// wordsLongerThan3("hello", "world") == 1
func wordsLongerThan3(str: String, _ words: String...) -> Int {
    return str.split(separator: " ").filter { $0.count > 3 }.filter { !words.contains($0) }.count
}

// Given a string, return the number of words in the string,
// but only if the word is longer than 3 characters,
// and the word is not the first or last word.
// wordsLongerThan3("hello world") == 2
// wordsLongerThan3("hello", "world") == 1
func wordsLongerThan3(str: String, _ words: String...) -> Int {
    return str.split(separator: " ").filter { $0.count > 3 }.filter { !words.contains($0) }.count
}

// Given a string, return the number of words in the string,
// but only if the word is longer than 3 characters,
// and the word is not the first or last word.
// wordsLongerThan3("hello world") == 2
// wordsLongerThan3("hello", "world") == 1
func wordsLongerThan3(str: String, _ words: String...) -> Int {
    return str.split(separator: " ").filter { $0.count > 3 }.filter { !words.contains($0) }.count
}

// Given a string, return the number of words in the string,
// but only
return str.split(separator: " ").filter { $0.count > 3 }.filter { !words.contains($0) }.count // instance method 'contains' requires the types 'String' and 'String.Element' (aka 'Character') be equivalent

func triangleArea(a: Int, h: Int) -> Double {
    return Double(a) * Double(h) / 2
}

func vowels(str: String) -> Int {
    var vowels = 0
    for char in str {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            vowels += 1
        }
    }
    return vowels
}

func consonants(str: String) -> Int {
    var consonants = 0
    for char in str {
        if char != "a" && char != "e" && char != "i" && char != "o" && char != "u" {
            consonants += 1
        }
    }
    return consonants
}

func words(str: String) -> Int {
    var words = 0
    var word = ""
    for char in str {
        if char == " " {
            words += 1
        }
    }
    return words
}

func words2(str: String) -> Int {
    var words = 0
    var word = ""
    for char in str {
        if char == " " {
            words += 1
        } else {
            word += String(char)
        }
    }
    return words
}

func words3(str: String) -> Int {
    var words = 0
    var word = ""
    for char in str {
        if char == " " {
            words += 1
        } else {
            word += String(char)
        }
    }
    return words
}

func words4(str: String) -> Int {
    var words = 0
    var word = ""
    for char in str {
        if char == " " {
            words += 1
        } else {
            word += String(char)
        }
    }
    return words
}

func words5(str: String) -> Int {
    var words = 0
    var word = ""
    for char in str {
        if char == " " {
            words += 1
        } else {
            word += String(char)
        }
    }
    return words
}

func words6(str: String) -> Int {
    var words = 0
    var word = ""
    for char in str {
        if char == " " {
            words += 1
        } else {
            word += String(char)
        }
    }
    return words
}

func words7(str: String) -> Int {
    var words = 0
    var word = ""
    for char in str {
        if char == " " {
            words += 1
        } else {
            word += String(char)
        }
    }
    return words
}
```swift
// Given length of a side and high return area for a triangle.
// triangleArea(a: 5, h: 3) == 7.5
func triangleArea(a: Int, h: Int) -> Double {
    return Double(a) * Double(h) / 2
}

// Given a string, return the number of vowels in the string.
// vowels("aeiou") == 5
func vowels(str: String) -> Int {
    var vowels = 0
    for char in str {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            vowels += 1
        }
    }
    return vowels
}

// Given a string, return the number of consonants in the string.
// consonants("aeiou") == 0
func consonants(str: String) -> Int {
    var consonants = 0
    for char in str {
        if char != "a" && char != "e" && char != "i" && char != "o" && char != "u" {
            consonants += 1
        }
    }
    return consonants
}

// Given a string, return the number of words in the string.
// words("Hello World") == 2
func words(str: String) -> Int {
    var words = 0
    var word = ""
    for char in str {
        if char == " " {
            words += 1
        }
    }
    return words
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by a single space.
// words("Hello World") == 2
func words2(str: String) -> Int {
    var words = 0
    var word = ""
    for char in str {
        if char == " " {
            words += 1
        } else {
            word += String(char)
        }
    }
    return words
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by a single space.
// words2("Hello World") == 2
func words3(str: String) -> Int {
    var words = 0
    var word = ""
    for char in str {
        if char == " " {
            words += 1
        } else {
            word += String(char)
        }
    }
    return words
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by a single space.
// words3("Hello World") == 2
func words4(str: String) -> Int {
    var words = 0
    var word = ""
    for char in str {
        if char == " " {
            words += 1
        } else {
            word += String(char)
        }
    }
    return words
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by a single space.
// words4("Hello World") == 2
func words5(str: String) -> Int {
    var words = 0
    var word = ""
    for char in str {
        if char == " " {
            words += 1
        } else {
            word += String(char)
        }
    }
    return words
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by a single space.
// words5("Hello World") == 2
func words6(str: String) -> Int {
    var words = 0
    var word = ""
    for char in str {
        if char == " " {
            words += 1
        } else {
            word += String(char)
        }
    }
    return words
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by a single space.
// words6("Hello World") == 2
func words7(str: String) -> Int {
    var words = 0
    var word = ""
    for char in str {
        if char == " " {
            words += 1
        } else {
            word += String(char)
        }
    }
    return words
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by a single space.
// words7("Hello World") == 2
var word = "" // initialization of variable 'word' was never used; consider replacing with assignment to '_' or removing it

func triangleArea(a: Int, h: Int) -> Double {
    return Double(a) * Double(h) / 2
}

func vowelsCount(str: String) -> Int {
    var vowels = 0
    for char in str {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            vowels += 1
        }
    }
    return vowels
}

func wordsCount(str: String) -> Int {
    return str.split(separator: " ").count
}

func wordsCount2(str: String) -> Int {
    var words = 0
    for word in str.split(separator: " ") {
        if word.count > 3 {
            words += 1
        }
    }
    return words
}

func wordsCount3(str: String) -> Int {
    var words = 0
    for word in str.split(separator: " ") {
        if word.count > 3 {
            words += 1
        }
    }
    return words
}

func wordsCount4(str: String) -> Int {
    var words = 0
    for word in str.split(separator: " ") {
        if word.count > 3 {
            words += 1
        }
    }
    return words
}

func wordsCount5(str: String) -> Int {
    var words = 0
    for word in str.split(separator: " ") {
        if word.count > 3 {
            words += 1
        }
    }
    return words
}

func wordsCount6(str: String) -> Int {
    var words = 0
    for word in str.split(separator: " ") {
        if word.count > 3 {
            words += 1
        }
    }
    return words
}

func wordsCount7(str: String) -> Int {
    var words = 0
    for word in str.split(separator: " ") {
        if word.count > 3 {
            words += 1
        }
    }
    return words
}

func wordsCount8(str: String) -> Int {
    var words = 0
    for word in str.split(separator: " ") {
        if word.count > 3 {
            words += 1
        }
    }
    return words
}
```swift
// Given length of a side and high return area for a triangle.
// triangleArea(a: 5, h: 3) == 7.5
func triangleArea(a: Int, h: Int) -> Double {
    return Double(a) * Double(h) / 2
}

// Given a string, return the number of vowels in the string.
// vowelsCount("hello") == 2
func vowelsCount(str: String) -> Int {
    var vowels = 0
    for char in str {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            vowels += 1
        }
    }
    return vowels
}

// Given a string, return the number of words in the string.
// wordsCount("hello") == 1
func wordsCount(str: String) -> Int {
    return str.split(separator: " ").count
}

// Given a string, return the number of words in the string, but only if the word is longer than 3 characters.
// wordsCount("hello") == 1
// wordsCount("hello world") == 2
func wordsCount2(str: String) -> Int {
    var words = 0
    for word in str.split(separator: " ") {
        if word.count > 3 {
            words += 1
        }
    }
    return words
}

// Given a string, return the number of words in the string, but only if the word is longer than 3 characters.
// wordsCount("hello") == 1
// wordsCount("hello world") == 2
func wordsCount3(str: String) -> Int {
    var words = 0
    for word in str.split(separator: " ") {
        if word.count > 3 {
            words += 1
        }
    }
    return words
}

// Given a string, return the number of words in the string, but only if the word is longer than 3 characters.
// wordsCount("hello") == 1
// wordsCount("hello world") == 2
func wordsCount4(str: String) -> Int {
    var words = 0
    for word in str.split(separator: " ") {
        if word.count > 3 {
            words += 1
        }
    }
    return words
}

// Given a string, return the number of words in the string, but only if the word is longer than 3 characters.
// wordsCount("hello") == 1
// wordsCount("hello world") == 2
func wordsCount5(str: String) -> Int {
    var words = 0
    for word in str.split(separator: " ") {
        if word.count > 3 {
            words += 1
        }
    }
    return words
}

// Given a string, return the number of words in the string, but only if the word is longer than 3 characters.
// wordsCount("hello") == 1
// wordsCount("hello world") == 2
func wordsCount6(str: String) -> Int {
    var words = 0
    for word in str.split(separator: " ") {
        if word.count > 3 {
            words += 1
        }
    }
    return words
}

// Given a string, return the number of words in the string, but only if the word is longer than 3 characters.
// wordsCount("hello") == 1
// wordsCount("hello world") == 2
func wordsCount7(str: String) -> Int {
    var words = 0
    for word in str.split(separator: " ") {
        if word.count > 3 {
            words += 1
        }
    }
    return words
}

// Given a string, return the number of words in the string, but only if the word is longer than 3 characters.
// wordsCount("hello") == 1
// wordsCount("hello world") == 2
func wordsCount8(str: String) -> Int {
    var words = 0
    for word in str.split(separator: " ") {
        if word.count > 3 {
            words += 1
        }
    }
    return words
}

// Given a string, return the number of words in the string, but only if the word is longer than 3 characters.
// wordsCount("hello") == 1
// wordsCount("hello world") == 2
func wordsCount9(str: String) -> Int {
    var words = 0
    for word in str.split(separator: " ") {

func triangleArea(a: Int, h: Int) -> Double {
  return Double(a) * Double(h) / 2
}

func vowelsCount(str: String) -> Int {
  var vowels = 0
  for char in str {
    if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
      vowels += 1
    }
  }
  return vowels
}

func consonantsCount(str: String) -> Int {
  var consonants = 0
  for char in str {
    if char != "a" && char != "e" && char != "i" && char != "o" && char != "u" {
      consonants += 1
    }
  }
  return consonants
}

func wordsCount(str: String) -> Int {
  var words = 0
  for char in str {
    if char == " " {
      words += 1
    }
  }
  return words + 1
}

func wordsCount2(str: String) -> Int {
  var words = 0
  var word = ""
  for char in str {
    if char == " " {
      words += 1
      word = ""
    } else {
      word += char
    }
  }
  return words + 1
}

func wordsCount3(str: String) -> Int {
  var words = 0
  var word = ""
  for char in str {
    if char == " " {
      words += 1
      word = ""
    } else {
      word += char
    }
  }
  return words + 1
}

func wordsCount4(str: String) -> Int {
  var words = 0
  var word = ""
  for char in str {
    if char == " " {
      words += 1
      word = ""
    } else {
      word += char
    }
  }
  return words + 1
}

func wordsCount5(str: String) -> Int {
  var words = 0
  var word = ""
  for char in str {
    if char == " " {
      words += 1
      word = ""
    } else {
      word += char
    }
  }
  return words + 1
}

func wordsCount6(str: String) -> Int {
  var words = 0
  var word = ""
  for char in str {
    if char == " " {
      words += 1
      word = ""
    } else {
      word += char
    }
  }
  return words + 1
}

func wordsCount7(str: String) -> Int {
  var words = 0
  var word = ""
  for char in str {
    if char == " " {
      words += 1
      word = ""
    } else {
      word += char
    }
  }
  return words + 1
}
```swift
// Given length of a side and high return area for a triangle.
// triangleArea(a: 5, h: 3) == 7.5
func triangleArea(a: Int, h: Int) -> Double {
  return Double(a) * Double(h) / 2
}

// Given a string, return the number of vowels in the string.
// vowelsCount("hello") == 2
func vowelsCount(str: String) -> Int {
  var vowels = 0
  for char in str {
    if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
      vowels += 1
    }
  }
  return vowels
}

// Given a string, return the number of consonants in the string.
// consonantsCount("hello") == 3
func consonantsCount(str: String) -> Int {
  var consonants = 0
  for char in str {
    if char != "a" && char != "e" && char != "i" && char != "o" && char != "u" {
      consonants += 1
    }
  }
  return consonants
}

// Given a string, return the number of words in the string.
// wordsCount("hello") == 1
func wordsCount(str: String) -> Int {
  var words = 0
  for char in str {
    if char == " " {
      words += 1
    }
  }
  return words + 1
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by a single space.
// wordsCount("hello world") == 2
func wordsCount2(str: String) -> Int {
  var words = 0
  var word = ""
  for char in str {
    if char == " " {
      words += 1
      word = ""
    } else {
      word += char
    }
  }
  return words + 1
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by a single space.
// wordsCount("hello world") == 2
func wordsCount3(str: String) -> Int {
  var words = 0
  var word = ""
  for char in str {
    if char == " " {
      words += 1
      word = ""
    } else {
      word += char
    }
  }
  return words + 1
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by a single space.
// wordsCount("hello world") == 2
func wordsCount4(str: String) -> Int {
  var words = 0
  var word = ""
  for char in str {
    if char == " " {
      words += 1
      word = ""
    } else {
      word += char
    }
  }
  return words + 1
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by a single space.
// wordsCount("hello world") == 2
func wordsCount5(str: String) -> Int {
  var words = 0
  var word = ""
  for char in str {
    if char == " " {
      words += 1
      word = ""
    } else {
      word += char
    }
  }
  return words + 1
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by a single space.
// wordsCount("hello world") == 2
func wordsCount6(str: String) -> Int {
  var words = 0
  var word = ""
  for char in str {
    if char == " " {
      words += 1
      word = ""
    } else {
      word += char
    }
  }
  return words + 1
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by a single space.
// wordsCount("hello world") == 2
func wordsCount7(str: String) -> Int {
  var words = 0
  var word = ""
  for char in str {
    if char == " " {
      words += 1
      word = ""
    } else {
      word += char
    }
  }
  return words + 1
}

// Given a string,
word += char // cannot convert value of type 'Character' to expected argument type 'String'
word += char // cannot convert value of type 'Character' to expected argument type 'String'
word += char // cannot convert value of type 'Character' to expected argument type 'String'
word += char // cannot convert value of type 'Character' to expected argument type 'String'
word += char // cannot convert value of type 'Character' to expected argument type 'String'
word += char // cannot convert value of type 'Character' to expected argument type 'String'

func triangleArea(a: Int, h: Int) -> Double {
    return Double(a) * Double(h) / 2
}
```swift
// Given length of a side and high return area for a triangle.
// triangleArea(a: 5, h: 3) == 7.5
func triangleArea(a: Int, h: Int) -> Double {
    return Double(a) * Double(h) / 2
}
<|file_separator|>

func triangleArea(a: Int, h: Int) -> Double {
    return Double(a) * Double(h) / 2
}

func equal(a: Int, b: Int) -> Bool {
    return a == b
}

func first(str: String) -> String {
    return String(str.characters.first!)
}

func last(str: String) -> String {
    return String(str.characters.last!)
}

func length(str: String) -> Int {
    return str.characters.count
}

func lastFirst(str1: String, str2: String) -> String {
    return String(str2.characters.last!)
}

func firstLast(str1: String, str2: String) -> String {
    return String(str1.characters.first!)
}

func charAt(str: String, index: Int) -> String {
    return String(str.characters[index])
}
```swift
// Given length of a side and high return area for a triangle.
// triangleArea(a: 5, h: 3) == 7.5
func triangleArea(a: Int, h: Int) -> Double {
    return Double(a) * Double(h) / 2
}

// Given two integers, return true if they are equal or false if they are not.
// equal(1, 1) == true
// equal(1, 2) == false
func equal(a: Int, b: Int) -> Bool {
    return a == b
}

// Given a string, return the first character.
// first("hello") == "h"
// first("goodbye") == "g"
func first(str: String) -> String {
    return String(str.characters.first!)
}

// Given a string, return the last character.
// last("hello") == "o"
// last("goodbye") == "d"
func last(str: String) -> String {
    return String(str.characters.last!)
}

// Given a string, return the length.
// length("hello") == 5
// length("goodbye") == 6
func length(str: String) -> Int {
    return str.characters.count
}

// Given two strings, return the first character of the last string.
// lastFirst("hello", "world") == "d"
// lastFirst("goodbye", "world") == "d"
func lastFirst(str1: String, str2: String) -> String {
    return String(str2.characters.last!)
}

// Given two strings, return the last character of the first string.
// firstLast("hello", "world") == "o"
// firstLast("goodbye", "world") == "d"
func firstLast(str1: String, str2: String) -> String {
    return String(str1.characters.first!)
}

// Given a string, return the character at the index.
// charAt("hello", 1) == "e"
// charAt("goodbye", 2) == "d"
func charAt(str: String, index: Int) -> String {
    return String(str.characters[index])
}

// Given a string, return the character at the index.
// charAt("hello", 1) == "e"
// charAt("goodbye", 2) == "d"
func charAt(str: String, index: Int) -> String {
    return String(str.characters[index])
}

// Given a string, return the character at the index.
// charAt("hello", 1) == "e"
// charAt("goodbye", 2) == "d"
func charAt(str: String, index: Int) -> String {
    return String(str.characters[index])
}

// Given a string, return the character at the index.
// charAt("hello", 1) == "e"
// charAt("goodbye", 2) == "d"
func charAt(str: String, index: Int) -> String {
    return String(str.characters[index])
}

// Given a string, return the character at the index.
// charAt("hello", 1) == "e"
// charAt("goodbye", 2) == "d"
func charAt(str: String, index: Int) -> String {
    return String(str.characters[index])
}

// Given a string, return the character at the index.
// charAt("hello", 1) == "e"
// charAt("goodbye", 2) == "d"
func charAt(str: String, index: Int) -> String {
    return String(str.characters[index])
}

// Given a string, return the character at the index.
// charAt("hello", 1) == "e"
// charAt("goodbye", 2) == "d"
func charAt(str: String, index: Int) -> String {
    return String(str.characters[index])
}

// Given a string, return the character at the index.
// charAt("hello", 1) == "e"
// charAt("goodbye", 2) == "d"
func charAt(str: String, index: Int) -> String {
    return String(str.characters[index])
}

// Given a string, return the character at the index.
// charAt("hello", 1) == "e"
// charAt("goodbye", 2) == "d"
func charAt(str: String, index: Int) -> String {
    return String(str.characters[index])
}

// Given a
return String(str.characters.first!) // 'characters' is unavailable: Please use String directly
return String(str.characters.last!) // 'characters' is unavailable: Please use String directly
return str.characters.count // 'characters' is unavailable: Please use String directly
return String(str2.characters.last!) // 'characters' is unavailable: Please use String directly
return String(str1.characters.first!) // 'characters' is unavailable: Please use String directly
return String(str.characters[index]) // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
return String(str.characters[index]) // 'characters' is unavailable: Please use String directly

func triangleArea(a: Int, h: Int) -> Double {
    return Double(a) * Double(h) / 2
}

func charCount(str: String, char: String) -> Int {
    return str.filter { $0 == char }.count
}

func first(str: String) -> String {
    return String(str.prefix(1))
}

func last(str: String) -> String {
    return String(str.suffix(1))
}

func last2(str: String) -> String {
    return String(str.suffix(2))
}

func middle(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

func middle2(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

func middle3(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

func middle4(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

func middle5(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

func middle6(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

func middle7(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

func middle8(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

func middle9(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

func middle10(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

func middle11(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

func middle12(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

func middle13(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

func middle14(str: String) -> String {
    return String(str.suffix(str.count / 2))
}
```swift
// Given length of a side and high return area for a triangle.
// triangleArea(a: 5, h: 3) == 7.5
func triangleArea(a: Int, h: Int) -> Double {
    return Double(a) * Double(h) / 2
}

// Given a string and a character, return the number of times the character appears in the string.
// charCount("hello", "l") == 2
func charCount(str: String, char: String) -> Int {
    return str.filter { $0 == char }.count
}

// Given a string, return the first character.
// first("hello") == "h"
func first(str: String) -> String {
    return String(str.prefix(1))
}

// Given a string, return the last character.
// last("hello") == "o"
func last(str: String) -> String {
    return String(str.suffix(1))
}

// Given a string, return the last 2 characters.
// last2("hello") == "ll"
func last2(str: String) -> String {
    return String(str.suffix(2))
}

// Given a string, return the 2 characters starting from the middle.
// middle("hello") == "ll"
func middle(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

// Given a string, return the 2 characters starting from the middle.
// middle("hello") == "ll"
func middle2(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

// Given a string, return the 2 characters starting from the middle.
// middle("hello") == "ll"
func middle3(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

// Given a string, return the 2 characters starting from the middle.
// middle("hello") == "ll"
func middle4(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

// Given a string, return the 2 characters starting from the middle.
// middle("hello") == "ll"
func middle5(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

// Given a string, return the 2 characters starting from the middle.
// middle("hello") == "ll"
func middle6(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

// Given a string, return the 2 characters starting from the middle.
// middle("hello") == "ll"
func middle7(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

// Given a string, return the 2 characters starting from the middle.
// middle("hello") == "ll"
func middle8(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

// Given a string, return the 2 characters starting from the middle.
// middle("hello") == "ll"
func middle9(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

// Given a string, return the 2 characters starting from the middle.
// middle("hello") == "ll"
func middle10(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

// Given a string, return the 2 characters starting from the middle.
// middle("hello") == "ll"
func middle11(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

// Given a string, return the 2 characters starting from the middle.
// middle("hello") == "ll"
func middle12(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

// Given a string, return the 2 characters starting from the middle.
// middle("hello") == "ll"
func middle13(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

// Given a string, return the 2 characters starting from the middle.
// middle("hello") == "ll"
func middle14(str: String) -> String {
    return String(str.suffix(str.count / 2))
}

// Given a string, return the 2 characters starting from the middle
return str.filter { $0 == char }.count // binary operator '==' cannot be applied to operands of type 'String.Element' (aka 'Character') and 'String'

func triangleArea(a: Int, h: Int) -> Double {
    return Double(a) * Double(h) / 2
}

func charCount(str: String, char: String) -> Int {
    return str.componentsSeparatedByString(char).count - 1
}

func firstChar(str: String) -> String {
    return String(str.characters.first!)
}

func lastChar(str: String) -> String {
    return String(str.characters.last!)
}

func removeFirstLast(str: String) -> String {
    return String(str.characters.dropFirst().dropLast())
}
```swift
// Given length of a side and high return area for a triangle.
// triangleArea(a: 5, h: 3) == 7.5
func triangleArea(a: Int, h: Int) -> Double {
    return Double(a) * Double(h) / 2
}

// Given a string and a char, returns the number of times the char appears in the string.
// charCount("Hello World", "l") == 3
func charCount(str: String, char: String) -> Int {
    return str.componentsSeparatedByString(char).count - 1
}

// Given a string, returns the first character.
// firstChar("Hello World") == "H"
func firstChar(str: String) -> String {
    return String(str.characters.first!)
}

// Given a string, returns the last character.
// lastChar("Hello World") == "d"
func lastChar(str: String) -> String {
    return String(str.characters.last!)
}

// Given a string, returns the string with the first and last characters removed.
// removeFirstLast("Hello World") == "ell World"
func removeFirstLast(str: String) -> String {
    return String(str.characters.dropFirst().dropLast())
}

// Given a string, returns the string with the first and last characters removed.
// removeFirstLast("Hello World") == "ell World"
func removeFirstLast(str: String) -> String {
    return String(str.characters.dropFirst().dropLast())
}

// Given a string, returns the string with the first and last characters removed.
// removeFirstLast("Hello World") == "ell World"
func removeFirstLast(str: String) -> String {
    return String(str.characters.dropFirst().dropLast())
}

// Given a string, returns the string with the first and last characters removed.
// removeFirstLast("Hello World") == "ell World"
func removeFirstLast(str: String) -> String {
    return String(str.characters.dropFirst().dropLast())
}

// Given a string, returns the string with the first and last characters removed.
// removeFirstLast("Hello World") == "ell World"
func removeFirstLast(str: String) -> String {
    return String(str.characters.dropFirst().dropLast())
}

// Given a string, returns the string with the first and last characters removed.
// removeFirstLast("Hello World") == "ell World"
func removeFirstLast(str: String) -> String {
    return String(str.characters.dropFirst().dropLast())
}

// Given a string, returns the string with the first and last characters removed.
// removeFirstLast("Hello World") == "ell World"
func removeFirstLast(str: String) -> String {
    return String(str.characters.dropFirst().dropLast())
}

// Given a string, returns the string with the first and last characters removed.
// removeFirstLast("Hello World") == "ell World"
func removeFirstLast(str: String) -> String {
    return String(str.characters.dropFirst().dropLast())
}

// Given a string, returns the string with the first and last characters removed.
// removeFirstLast("Hello World") == "ell World"
func removeFirstLast(str: String) -> String {
    return String(str.characters.dropFirst().dropLast())
}

// Given a string, returns the string with the first and last characters removed.
// removeFirstLast("Hello World") == "ell World"
func removeFirstLast(str: String) -> String {
    return String(str.characters.dropFirst().dropLast())
}

// Given a string, returns the string with the first and last characters removed.
// removeFirstLast("Hello World") == "ell World"
func removeFirstLast(str: String) -> String {
    return String(str.characters.dropFirst().dropLast())
}

// Given a string, returns the string with the first and last characters removed.
// removeFirstLast("Hello World") == "ell World"
func removeFirstLast(str: String) -> String {
    return String(str.characters.dropFirst().dropLast())
}

// Given a string, returns the string with the first and last characters removed.
// removeFirstLast("Hello World") == "ell World"
func removeFirstLast(str: String) -> String {
    return String(str.characters.dropFirst().dropLast())
}

// Given a string, returns the string with the first and last characters removed.
// removeFirstLast("Hello World") == "ell World"
func removeFirstLast(str: String) -> String {
    return String(
return str.componentsSeparatedByString(char).count - 1 // value of type 'String' has no member 'componentsSeparatedByString'
return String(str.characters.first!) // 'characters' is unavailable: Please use String directly
return String(str.characters.last!) // 'characters' is unavailable: Please use String directly
return String(str.characters.dropFirst().dropLast()) // 'characters' is unavailable: Please use String directly

func triangleArea(a: Int, h: Int) -> Double {
    return Double(a) * Double(h) / 2
}

func vowels(str: String) -> Int {
    var vowels = 0
    for char in str {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            vowels += 1
        }
    }
    return vowels
}

func consonants(str: String) -> Int {
    var consonants = 0
    for char in str {
        if char == "b" || char == "c" || char == "d" || char == "f" || char == "g" || char == "h" || char == "j" || char == "k" || char == "l" || char == "m" || char == "n" || char == "p" || char == "q" || char == "r" || char == "s" || char == "t" || char == "v" || char == "w" || char == "x" || char == "y" || char == "z" {
            consonants += 1
        }
    }
    return consonants
}

func words(str: String) -> Int {
    var words = 0
    for char in str {
        if char == " " {
            words += 1
        }
    }
    return words + 1
}

func words2(str: String) -> Int {
    var words = 0
    for char in str {
        if char == " " {
            words += 1
        }
    }
    return words + 1
}

func words3(str: String) -> Int {
    var words = 0
    for char in str {
        if char == " " {
            words += 1
        }
    }
    return words + 1
}

func words4(str: String) -> Int {
    var words = 0
    for char in str {
        if char == " " {
            words += 1
        }
    }
    return words + 1
}

func words5(str: String) -> Int {
    var words = 0
    for char in str {
        if char == " " {
            words += 1
        }
    }
    return words + 1
}

func words6(str: String) -> Int {
    var words = 0
    for char in str {
        if char == " " {
            words += 1
        }
    }
    return words + 1
}

func words7(str: String) -> Int {
    var words = 0
    for char in str {
        if char == " " {
            words += 1
        }
    }
    return words + 1
}
```swift
// Given length of a side and high return area for a triangle.
// triangleArea(a: 5, h: 3) == 7.5
func triangleArea(a: Int, h: Int) -> Double {
    return Double(a) * Double(h) / 2
}

// Given a string, return the number of vowels in the string.
// vowels("aeiou") == 5
func vowels(str: String) -> Int {
    var vowels = 0
    for char in str {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            vowels += 1
        }
    }
    return vowels
}

// Given a string, return the number of consonants in the string.
// consonants("bcdfghjklmnpqrstvwxyz") == 23
func consonants(str: String) -> Int {
    var consonants = 0
    for char in str {
        if char == "b" || char == "c" || char == "d" || char == "f" || char == "g" || char == "h" || char == "j" || char == "k" || char == "l" || char == "m" || char == "n" || char == "p" || char == "q" || char == "r" || char == "s" || char == "t" || char == "v" || char == "w" || char == "x" || char == "y" || char == "z" {
            consonants += 1
        }
    }
    return consonants
}

// Given a string, return the number of words in the string.
// words("hello world") == 2
func words(str: String) -> Int {
    var words = 0
    for char in str {
        if char == " " {
            words += 1
        }
    }
    return words + 1
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by spaces.
// words2("hello world") == 2
func words2(str: String) -> Int {
    var words = 0
    for char in str {
        if char == " " {
            words += 1
        }
    }
    return words + 1
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by spaces.
// words3("hello world") == 2
func words3(str: String) -> Int {
    var words = 0
    for char in str {
        if char == " " {
            words += 1
        }
    }
    return words + 1
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by spaces.
// words4("hello world") == 2
func words4(str: String) -> Int {
    var words = 0
    for char in str {
        if char == " " {
            words += 1
        }
    }
    return words + 1
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by spaces.
// words5("hello world") == 2
func words5(str: String) -> Int {
    var words = 0
    for char in str {
        if char == " " {
            words += 1
        }
    }
    return words + 1
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by spaces.
// words6("hello world") == 2
func words6(str: String) -> Int {
    var words = 0
    for char in str {
        if char == " " {
            words += 1
        }
    }
    return words + 1
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by spaces.
// words7("hello world") == 2
func words7(str: String) -> Int {
    var words = 0
    for char in str {
        if char == " " {
            words += 1
        }
    }
    return words + 1
}

// Given a string, return the number of words in the string, where a word is defined as a sequence of characters separated by spaces.
// words8("hello world") == 2
func words8(str: String)

func triangleArea(a: Int, h: Int) -> Double {
    return Double(a) * Double(h) / 2
}

func firstChar(str: String) -> String {
    return String(str.first!)
}

func lastChar(str: String) -> String {
    return String(str.last!)
}

func secondChar(str: String) -> String {
    return String(str.characters.dropFirst().first!)
}

func secondToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropFirst().first!)
}

func thirdToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropFirst().first!)
}

func fourthToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropLast().dropFirst().first!)
}

func fifthToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropFirst().first!)
}

func sixthToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!)
}

func seventhToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!)
}

func eighthToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!)
}

func ninthToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!)
}

func tenthToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!)
}

func eleventhToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!)
}

func twelfthToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!)
}
```swift
// Given length of a side and high return area for a triangle.
// triangleArea(a: 5, h: 3) == 7.5
func triangleArea(a: Int, h: Int) -> Double {
    return Double(a) * Double(h) / 2
}

// Given a string, return the first character.
// firstChar("hello") == "h"
func firstChar(str: String) -> String {
    return String(str.first!)
}

// Given a string, return the last character.
// lastChar("hello") == "o"
func lastChar(str: String) -> String {
    return String(str.last!)
}

// Given a string, return the second character.
// secondChar("hello") == "e"
func secondChar(str: String) -> String {
    return String(str.characters.dropFirst().first!)
}

// Given a string, return the second to last character.
// secondToLastChar("hello") == "l"
func secondToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropFirst().first!)
}

// Given a string, return the third to last character.
// thirdToLastChar("hello") == "l"
func thirdToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropFirst().first!)
}

// Given a string, return the 4th to last character.
// fourthToLastChar("hello") == "l"
func fourthToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropLast().dropFirst().first!)
}

// Given a string, return the 5th to last character.
// fifthToLastChar("hello") == "l"
func fifthToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropFirst().first!)
}

// Given a string, return the 6th to last character.
// sixthToLastChar("hello") == "l"
func sixthToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!)
}

// Given a string, return the 7th to last character.
// seventhToLastChar("hello") == "l"
func seventhToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!)
}

// Given a string, return the 8th to last character.
// eighthToLastChar("hello") == "l"
func eighthToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!)
}

// Given a string, return the 9th to last character.
// ninthToLastChar("hello") == "l"
func ninthToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!)
}

// Given a string, return the 10th to last character.
// tenthToLastChar("hello") == "l"
func tenthToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!)
}

// Given a string, return the 11th to last character.
// eleventhToLastChar("hello") == "l"
func eleventhToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!)
}

// Given a string, return the 12th to last character.
// twelfthToLastChar("hello") == "l"
func twelfthToLastChar(str: String) -> String {
    return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!)
}

// Given a string, return the 13th to last character.
// thirteenthToLastChar("hello") == "l"
func thirteenth
return String(str.characters.dropFirst().first!) // 'characters' is unavailable: Please use String directly
return String(str.characters.dropLast().dropFirst().first!) // 'characters' is unavailable: Please use String directly
return String(str.characters.dropLast().dropLast().dropFirst().first!) // 'characters' is unavailable: Please use String directly
return String(str.characters.dropLast().dropLast().dropLast().dropFirst().first!) // 'characters' is unavailable: Please use String directly
return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropFirst().first!) // 'characters' is unavailable: Please use String directly
return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!) // 'characters' is unavailable: Please use String directly
return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!) // 'characters' is unavailable: Please use String directly
return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!) // 'characters' is unavailable: Please use String directly
return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!) // 'characters' is unavailable: Please use String directly
return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!) // 'characters' is unavailable: Please use String directly
return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!) // 'characters' is unavailable: Please use String directly
return String(str.characters.dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropLast().dropFirst().first!) // 'characters' is unavailable: Please use String directly

func fib4(n: Int) -> Int {
    var fib4 = [0, 0, 2, 0]
    for i in 4...n {
        fib4.append(fib4[i-1] + fib4[i-2] + fib4[i-3] + fib4[i-4])
    }
    return fib4[n]
}
```swift
// The Fib4 number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fib4(0) -> 0
// fib4(1) -> 0
// fib4(2) -> 2
// fib4(3) -> 0
// fib4(n) -> fib4(n-1) + fib4(n-2) + fib4(n-3) + fib4(n-4).
// Please write a function to efficiently compute the n-th element of the fib4 number sequence.  Do not use recursion.
// fib4(n: 5) == 4
// fib4(n: 6) == 8
// fib4(n: 7) == 14
func fib4(n: Int) -> Int {
    var fib4 = [0, 0, 2, 0]
    for i in 4...n {
        fib4.append(fib4[i-1] + fib4[i-2] + fib4[i-3] + fib4[i-4])
    }
    return fib4[n]
}
<|file_separator|>```swift
<|fim_prefix|>// The

func fib4(n: Int) -> Int {
    var fib4 = [Int](repeating: 0, count: n + 1)
    fib4[0] = 0
    fib4[1] = 0
    fib4[2] = 2
    fib4[3] = 0
    for i in 4...n {
        fib4[i] = fib4[i - 1] + fib4[i - 2] + fib4[i - 3] + fib4[i - 4]
    }
    return fib4[n]
}

func fib5(n: Int) -> Int {
    var fib5 = [Int](repeating: 0, count: n + 1)
    fib5[0] = 0
    fib5[1] = 0
    fib5[2] = 2
    fib5[3] = 0
    fib5[4] = 0
    for i in 5...n {
        fib5[i] = fib5[i - 1] + fib5[i - 2] + fib5[i - 3] + fib5[i - 4] + fib5[i - 5]
    }
    return fib5[n]
}

func fib6(n: Int) -> Int {
    var fib6 = [Int](repeating: 0, count: n + 1)
    fib6[0] = 0
    fib6[1] = 0
    fib6[2] = 2
    fib6[3] = 0
    fib6[4] = 0
    fib6[5] = 0
    for i in 6...n {
        fib6[i] = fib6[i - 1] + fib6[i - 2] + fib6[i - 3] + fib6[i - 4] + fib6[i - 5] + fib6[i - 6]
    }
    return fib6[n]
}
```swift
// The Fib4 number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fib4(0) -> 0
// fib4(1) -> 0
// fib4(2) -> 2
// fib4(3) -> 0
// fib4(n) -> fib4(n-1) + fib4(n-2) + fib4(n-3) + fib4(n-4).
// Please write a function to efficiently compute the n-th element of the fib4 number sequence.  Do not use recursion.
// fib4(n: 5) == 4
// fib4(n: 6) == 8
// fib4(n: 7) == 14
func fib4(n: Int) -> Int {
    var fib4 = [Int](repeating: 0, count: n + 1)
    fib4[0] = 0
    fib4[1] = 0
    fib4[2] = 2
    fib4[3] = 0
    for i in 4...n {
        fib4[i] = fib4[i - 1] + fib4[i - 2] + fib4[i - 3] + fib4[i - 4]
    }
    return fib4[n]
}

// The Fib5 number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fib5(0) -> 0
// fib5(1) -> 0
// fib5(2) -> 2
// fib5(3) -> 0
// fib5(n) -> fib5(n-1) + fib5(n-2) + fib5(n-3) + fib5(n-4) + fib5(n-5).
// Please write a function to efficiently compute the n-th element of the fib5 number sequence.  Do not use recursion.
// fib5(n: 5) == 4
// fib5(n: 6) == 8
// fib5(n: 7) == 14
func fib5(n: Int) -> Int {
    var fib5 = [Int](repeating: 0, count: n + 1)
    fib5[0] = 0
    fib5[1] = 0
    fib5[2] = 2
    fib5[3] = 0
    fib5[4] = 0
    for i in 5...n {
        fib5[i] = fib5[i - 1] + fib5[i - 2] + fib5[i - 3] + fib5[i - 4] + fib5[i - 5]
    }
    return fib5[n]
}

// The Fib6 number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fib6(0) -> 0
// fib6(1) -> 0
// fib6(2) -> 2
// fib6(3) -> 0
// fib6(n) -> fib6(n-1) + fib6(n-2) + fib6(n-3) + fib6(n-4) + fib6(n-5) + fib6(n-6).
// Please write a function to efficiently compute the n-th element of the fib6 number sequence.  Do not use recursion.
// fib6(n: 5) == 4
// fib6(n: 6) == 8
// fib6(n: 7) == 14
func fib6(n: Int) -> Int {
    var fib6 = [Int](repeating: 0, count: n + 1)
    fib6[0] = 0
    fib6[1] = 0
    fib6[2] = 2
    fib6[3] = 0
    fib6[4] = 0
    fib6[5] = 0
    for i in 6...n {
        fib6[i] = fib6[i - 1] + fib6[i - 2] + fib6[i - 3] + fib6[i - 4] + fib6[i - 5] + fib6[i - 6]
    }
    return fib6[n]
}

// The Fib7 number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fib7(0) -> 0
// fib7(1) -> 0
// fib7(2) -> 2
// fib7(3) -> 0
// fib7(n) -> fib7(n-1) + fib7(n-2) + fib7(n-3) + fib7(n-4) + fib7(n-5) + fib7(n-6) + fib7(n-7).
// Please write a function to efficiently compute the n-th element of the fib7 number sequence.  Do not use recursion.
// fib7(n: 5) == 4
// fib7(n: 6) == 8
// fib7(n: 7

func fib4(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 2
    }
    if n == 3 {
        return 0
    }
    var a = 0
    var b = 0
    var c = 2
    var d = 0
    for _ in 4...n {
        d = a + b + c + d
        a = b
        b = c
        c = d
    }
    return d
}
```swift
// The Fib4 number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fib4(0) -> 0
// fib4(1) -> 0
// fib4(2) -> 2
// fib4(3) -> 0
// fib4(n) -> fib4(n-1) + fib4(n-2) + fib4(n-3) + fib4(n-4).
// Please write a function to efficiently compute the n-th element of the fib4 number sequence.  Do not use recursion.
// fib4(n: 5) == 4
// fib4(n: 6) == 8
// fib4(n: 7) == 14
func fib4(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 2
    }
    if n == 3 {
        return 0
    }
    var a = 0
    var b = 0
    var c = 2
    var d = 0
    for _ in 4...n {
        d = a + b + c + d
        a = b
        b = c
        c = d
    }
    return d
}
<|file_separator|>
 // XCTAssertTrue failed

func fib4(n: Int) -> Int {
    var fib4 = [Int]()
    fib4.append(0)
    fib4.append(0)
    fib4.append(2)
    fib4.append(0)
    for i in 4..<n {
        fib4.append(fib4[i-1] + fib4[i-2] + fib4[i-3] + fib4[i-4])
    }
    return fib4[n]
}
```swift
// The Fib4 number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fib4(0) -> 0
// fib4(1) -> 0
// fib4(2) -> 2
// fib4(3) -> 0
// fib4(n) -> fib4(n-1) + fib4(n-2) + fib4(n-3) + fib4(n-4).
// Please write a function to efficiently compute the n-th element of the fib4 number sequence.  Do not use recursion.
// fib4(n: 5) == 4
// fib4(n: 6) == 8
// fib4(n: 7) == 14
func fib4(n: Int) -> Int {
    var fib4 = [Int]()
    fib4.append(0)
    fib4.append(0)
    fib4.append(2)
    fib4.append(0)
    for i in 4..<n {
        fib4.append(fib4[i-1] + fib4[i-2] + fib4[i-3] + fib4[i-4])
    }
    return fib4[n]
}
<|file_separator|>
 // Fatal error: Index out of range

func fib4(n: Int) -> Int {
  var fib4 = [0, 0, 2, 0]
  for i in 4..<n {
    fib4.append(fib4[i-1] + fib4[i-2] + fib4[i-3] + fib4[i-4])
  }
  return fib4[n]
}
```swift
// The Fib4 number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fib4(0) -> 0
// fib4(1) -> 0
// fib4(2) -> 2
// fib4(3) -> 0
// fib4(n) -> fib4(n-1) + fib4(n-2) + fib4(n-3) + fib4(n-4).
// Please write a function to efficiently compute the n-th element of the fib4 number sequence.  Do not use recursion.
// fib4(n: 5) == 4
// fib4(n: 6) == 8
// fib4(n: 7) == 14
func fib4(n: Int) -> Int {
  var fib4 = [0, 0, 2, 0]
  for i in 4..<n {
    fib4.append(fib4[i-1] + fib4[i-2] + fib4[i-3] + fib4[i-4])
  }
  return fib4[n]
}
<|file_separator|>
 // Fatal error: Index out of range

func fib4(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 2
    }
    if n == 3 {
        return 0
    }
    var fib4 = 0
    var fib4_1 = 0
    var fib4_2 = 2
    var fib4_3 = 0
    for _ in 4...n {
        fib4 = fib4_1 + fib4_2 + fib4_3 + fib4_4
        fib4_4 = fib4_3
        fib4_3 = fib4_2
        fib4_2 = fib4_1
        fib4_1 = fib4
    }
    return fib4
}
```swift
// The Fib4 number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fib4(0) -> 0
// fib4(1) -> 0
// fib4(2) -> 2
// fib4(3) -> 0
// fib4(n) -> fib4(n-1) + fib4(n-2) + fib4(n-3) + fib4(n-4).
// Please write a function to efficiently compute the n-th element of the fib4 number sequence.  Do not use recursion.
// fib4(n: 5) == 4
// fib4(n: 6) == 8
// fib4(n: 7) == 14
func fib4(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 2
    }
    if n == 3 {
        return 0
    }
    var fib4 = 0
    var fib4_1 = 0
    var fib4_2 = 2
    var fib4_3 = 0
    for _ in 4...n {
        fib4 = fib4_1 + fib4_2 + fib4_3 + fib4_4
        fib4_4 = fib4_3
        fib4_3 = fib4_2
        fib4_2 = fib4_1
        fib4_1 = fib4
    }
    return fib4
}
<|file_separator|>
fib4 = fib4_1 + fib4_2 + fib4_3 + fib4_4 // cannot find 'fib4_4' in scope
fib4_4 = fib4_3 // cannot find 'fib4_4' in scope

func fib4(n: Int) -> Int {
    var fib4 = [Int](repeating: 0, count: n + 1)
    fib4[0] = 0
    fib4[1] = 0
    fib4[2] = 2
    fib4[3] = 0
    for i in 4...n {
        fib4[i] = fib4[i - 1] + fib4[i - 2] + fib4[i - 3] + fib4[i - 4]
    }
    return fib4[n]
}
```swift
// The Fib4 number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fib4(0) -> 0
// fib4(1) -> 0
// fib4(2) -> 2
// fib4(3) -> 0
// fib4(n) -> fib4(n-1) + fib4(n-2) + fib4(n-3) + fib4(n-4).
// Please write a function to efficiently compute the n-th element of the fib4 number sequence.  Do not use recursion.
// fib4(n: 5) == 4
// fib4(n: 6) == 8
// fib4(n: 7) == 14
func fib4(n: Int) -> Int {
    var fib4 = [Int](repeating: 0, count: n + 1)
    fib4[0] = 0
    fib4[1] = 0
    fib4[2] = 2
    fib4[3] = 0
    for i in 4...n {
        fib4[i] = fib4[i - 1] + fib4[i - 2] + fib4[i - 3] + fib4[i - 4]
    }
    return fib4[n]
}
<|file_separator|>

func fib4(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 2
    }
    if n == 3 {
        return 0
    }
    var fib4 = [0, 0, 2, 0]
    for i in 4...n {
        fib4.append(fib4[i-1] + fib4[i-2] + fib4[i-3] + fib4[i-4])
    }
    return fib4[n]
}
```swift
// The Fib4 number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fib4(0) -> 0
// fib4(1) -> 0
// fib4(2) -> 2
// fib4(3) -> 0
// fib4(n) -> fib4(n-1) + fib4(n-2) + fib4(n-3) + fib4(n-4).
// Please write a function to efficiently compute the n-th element of the fib4 number sequence.  Do not use recursion.
// fib4(n: 5) == 4
// fib4(n: 6) == 8
// fib4(n: 7) == 14
func fib4(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 2
    }
    if n == 3 {
        return 0
    }
    var fib4 = [0, 0, 2, 0]
    for i in 4...n {
        fib4.append(fib4[i-1] + fib4[i-2] + fib4[i-3] + fib4[i-4])
    }
    return fib4[n]
}
<|file_separator|>

func fib4(n: Int) -> Int {
  if n == 0 {
    return 0
  }
  if n == 1 {
    return 0
  }
  if n == 2 {
    return 2
  }
  if n == 3 {
    return 0
  }
  return fib4(n: n-1) + fib4(n: n-2) + fib4(n: n-3) + fib4(n: n-4)
}
```swift
// The Fib4 number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fib4(0) -> 0
// fib4(1) -> 0
// fib4(2) -> 2
// fib4(3) -> 0
// fib4(n) -> fib4(n-1) + fib4(n-2) + fib4(n-3) + fib4(n-4).
// Please write a function to efficiently compute the n-th element of the fib4 number sequence.  Do not use recursion.
// fib4(n: 5) == 4
// fib4(n: 6) == 8
// fib4(n: 7) == 14
func fib4(n: Int) -> Int {
  if n == 0 {
    return 0
  }
  if n == 1 {
    return 0
  }
  if n == 2 {
    return 2
  }
  if n == 3 {
    return 0
  }
  return fib4(n: n-1) + fib4(n: n-2) + fib4(n: n-3) + fib4(n: n-4)
}
<|file_separator|>

func fib4(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 2
    }
    if n == 3 {
        return 0
    }
    var a = 0
    var b = 0
    var c = 2
    var d = 0
    for _ in 4...n {
        d = a + b + c + d
        a = b
        b = c
        c = d
    }
    return d
}
```swift
// The Fib4 number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fib4(0) -> 0
// fib4(1) -> 0
// fib4(2) -> 2
// fib4(3) -> 0
// fib4(n) -> fib4(n-1) + fib4(n-2) + fib4(n-3) + fib4(n-4).
// Please write a function to efficiently compute the n-th element of the fib4 number sequence.  Do not use recursion.
// fib4(n: 5) == 4
// fib4(n: 6) == 8
// fib4(n: 7) == 14
func fib4(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 2
    }
    if n == 3 {
        return 0
    }
    var a = 0
    var b = 0
    var c = 2
    var d = 0
    for _ in 4...n {
        d = a + b + c + d
        a = b
        b = c
        c = d
    }
    return d
}
<|file_separator|>
 // XCTAssertTrue failed

func median(l: [Int]) -> Double {
    var sorted = l.sorted()
    if sorted.count % 2 == 0 {
        return (Double(sorted[sorted.count / 2]) + Double(sorted[sorted.count / 2 - 1])) / 2
    } else {
        return Double(sorted[sorted.count / 2])
    }
}

func countCat(str: String) -> Int {
    return str.componentsSeparatedByString("cat").count - 1
}

func countDog(str: String) -> Int {
    return str.componentsSeparatedByString("dog").count - 1
}

func countFish(str: String) -> Int {
    return str.componentsSeparatedByString("fish").count - 1
}

func countCow(str: String) -> Int {
    return str.componentsSeparatedByString("cow").count - 1
}

func countPig(str: String) -> Int {
    return str.componentsSeparatedByString("pig").count - 1
}

func countSheep(str: String) -> Int {
    return str.componentsSeparatedByString("sheep").count - 1
}

func countHorse(str: String) -> Int {
    return str.componentsSeparatedByString("horse").count - 1
}

func countCamel(str: String) -> Int {
    return str.componentsSeparatedByString("camel").count - 1
}

func countDuck(str: String) -> Int {
    return str.componentsSeparatedByString("duck").count - 1
}

func countElephant(str: String) -> Int {
    return str.componentsSeparatedByString("elephant").count - 1
}
```swift
// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    var sorted = l.sorted()
    if sorted.count % 2 == 0 {
        return (Double(sorted[sorted.count / 2]) + Double(sorted[sorted.count / 2 - 1])) / 2
    } else {
        return Double(sorted[sorted.count / 2])
    }
}

// Return the number of times the string "cat" appears in the given string.
// countCat("cat") == 1
// countCat("catcat") == 2
// countCat("catcatfish") == 0
// countCat("catcowcat") == 2
func countCat(str: String) -> Int {
    return str.componentsSeparatedByString("cat").count - 1
}

// Return the number of times the string "dog" appears in the given string.
// countDog("dog") == 1
// countDog("dogdog") == 2
// countDog("dogdogdog") == 0
// countDog("dogcowdog") == 2
func countDog(str: String) -> Int {
    return str.componentsSeparatedByString("dog").count - 1
}

// Return the number of times the string "fish" appears in the given string.
// countFish("fish") == 1
// countFish("fishfish") == 2
// countFish("fishfishfish") == 0
// countFish("fishcowfish") == 2
func countFish(str: String) -> Int {
    return str.componentsSeparatedByString("fish").count - 1
}

// Return the number of times the string "cow" appears in the given string.
// countCow("cow") == 1
// countCow("cowcow") == 2
// countCow("cowcowcow") == 0
// countCow("cowcowcowcow") == 2
func countCow(str: String) -> Int {
    return str.componentsSeparatedByString("cow").count - 1
}

// Return the number of times the string "pig" appears in the given string.
// countPig("pig") == 1
// countPig("pigpig") == 2
// countPig("pigpigpig") == 0
// countPig("pigpigpigpig") == 2
func countPig(str: String) -> Int {
    return str.componentsSeparatedByString("pig").count - 1
}

// Return the number of times the string "sheep" appears in the given string.
// countSheep("sheep") == 1
// countSheep("sheepsheep") == 2
// countSheep("sheepsheepsheep") == 0
// countSheep("sheepsheepsheepsheep") == 2
func countSheep(str: String) -> Int {
    return str.componentsSeparatedByString("sheep").count - 1
}

// Return the number of times the string "horse" appears in the given string.
// countHorse("horse") == 1
// countHorse("horsehorse") == 2
// countHorse("horsehorsehorse") == 0
// countHorse("horsehorsehorsehorse") == 2
func countHorse(str: String) -> Int {
    return str.componentsSeparatedByString("horse").count - 1
}

// Return the number of times the string "camel" appears in the given string.
// countCamel("camel") == 1
// countCamel("camelcamel") == 2
// countCamel("camelcamelcamel") == 0
// countCamel("camelcamelcamelcamel") == 2
func countCamel(str: String) -> Int {
    return str.componentsSeparatedByString("camel").count - 1
}

// Return the number of times the string "duck" appears in the given string.
// countDuck("duck") == 1
// countDuck("duckduck") == 2
// countDuck("duckduckduck") == 0
// countDuck("duckduckduckduck") == 2
func countDuck(str: String) -> Int {
    return str.componentsSeparatedByString("duck").count - 1
}

// Return the number of times the string "elephant" appears in the given string.
// countElephant("elephant") == 1
// countElephant("elephantelephant") == 2
// countElephant("elephantelephantelephant") == 0
// countElephant("elephantelephantelephantelephant") == 2
func countElephant(str: String) -> Int {
    return str.componentsSeparatedByString("elephant").count - 1
}

// Return the number of times the
var sorted = l.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constant
return str.componentsSeparatedByString("cat").count - 1 // value of type 'String' has no member 'componentsSeparatedByString'
return str.componentsSeparatedByString("dog").count - 1 // value of type 'String' has no member 'componentsSeparatedByString'
return str.componentsSeparatedByString("fish").count - 1 // value of type 'String' has no member 'componentsSeparatedByString'
return str.componentsSeparatedByString("cow").count - 1 // value of type 'String' has no member 'componentsSeparatedByString'
return str.componentsSeparatedByString("pig").count - 1 // value of type 'String' has no member 'componentsSeparatedByString'
return str.componentsSeparatedByString("sheep").count - 1 // value of type 'String' has no member 'componentsSeparatedByString'
return str.componentsSeparatedByString("horse").count - 1 // value of type 'String' has no member 'componentsSeparatedByString'
return str.componentsSeparatedByString("camel").count - 1 // value of type 'String' has no member 'componentsSeparatedByString'
return str.componentsSeparatedByString("duck").count - 1 // value of type 'String' has no member 'componentsSeparatedByString'
return str.componentsSeparatedByString("elephant").count - 1 // value of type 'String' has no member 'componentsSeparatedByString'

func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let mid = sorted.count / 2
    if sorted.count % 2 == 1 {
        return Double(sorted[mid])
    }
    return (Double(sorted[mid]) + Double(sorted[mid - 1])) / 2
}
```swift
// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let mid = sorted.count / 2
    if sorted.count % 2 == 1 {
        return Double(sorted[mid])
    }
    return (Double(sorted[mid]) + Double(sorted[mid - 1])) / 2
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let mid = sorted.count / 2
    if sorted.count % 2 == 1 {
        return Double(sorted[mid])
    }
    return (Double(sorted[mid]) + Double(sorted[mid - 1])) / 2
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let mid = sorted.count / 2
    if sorted.count % 2 == 1 {
        return Double(sorted[mid])
    }
    return (Double(sorted[mid]) + Double(sorted[mid - 1])) / 2
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let mid = sorted.count / 2
    if sorted.count % 2 == 1 {
        return Double(sorted[mid])
    }
    return (Double(sorted[mid]) + Double(sorted[mid - 1])) / 2
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let mid = sorted.count / 2
    if sorted.count % 2 == 1 {
        return Double(sorted[mid])
    }
    return (Double(sorted[mid]) + Double(sorted[mid - 1])) / 2
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let mid = sorted.count / 2
    if sorted.count % 2 == 1 {
        return Double(sorted[mid])
    }
    return (Double(sorted[mid]) + Double(sorted[mid - 1])) / 2
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let mid = sorted.count / 2
    if sorted.count % 2 == 1 {
        return Double(sorted[mid])
    }
    return (Double(sorted[mid]) + Double(sorted[mid - 1])) / 2
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3

func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let n = sorted.count
    if n % 2 == 0 {
        return (Double(sorted[n/2-1]) + Double(sorted[n/2])) / 2
    } else {
        return Double(sorted[n/2])
    }
}
```swift
// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let n = sorted.count
    if n % 2 == 0 {
        return (Double(sorted[n/2-1]) + Double(sorted[n/2])) / 2
    } else {
        return Double(sorted[n/2])
    }
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let n = sorted.count
    if n % 2 == 0 {
        return (Double(sorted[n/2-1]) + Double(sorted[n/2])) / 2
    } else {
        return Double(sorted[n/2])
    }
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let n = sorted.count
    if n % 2 == 0 {
        return (Double(sorted[n/2-1]) + Double(sorted[n/2])) / 2
    } else {
        return Double(sorted[n/2])
    }
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let n = sorted.count
    if n % 2 == 0 {
        return (Double(sorted[n/2-1]) + Double(sorted[n/2])) / 2
    } else {
        return Double(sorted[n/2])
    }
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let n = sorted.count
    if n % 2 == 0 {
        return (Double(sorted[n/2-1]) + Double(sorted[n/2])) / 2
    } else {
        return Double(sorted[n/2])
    }
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let n = sorted.count
    if n % 2 == 0 {
        return (Double(sorted[n/2-1]) + Double(sorted[n/2])) / 2
    } else {
        return Double(sorted[n/2])
    }
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let n = sorted.count
    if n % 2 == 0 {
        return (Double(sorted[n/2-1]) + Double(sorted[n/2])) / 2
    } else {
        return Double(sorted[n/2])
    }
}

func median(l: [Int]) -> Double {
  let sorted = l.sorted()
  let mid = sorted.count / 2
  if sorted.count % 2 == 0 {
    return (Double(sorted[mid]) + Double(sorted[mid - 1])) / 2
  } else {
    return Double(sorted[mid])
  }
}
```swift
// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
  let sorted = l.sorted()
  let mid = sorted.count / 2
  if sorted.count % 2 == 0 {
    return (Double(sorted[mid]) + Double(sorted[mid - 1])) / 2
  } else {
    return Double(sorted[mid])
  }
}
<|file_separator|>

func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let n = sorted.count
    if n % 2 == 1 {
        return Double(sorted[n / 2])
    } else {
        return (Double(sorted[n / 2 - 1]) + Double(sorted[n / 2])) / 2.0
    }
}
```swift
// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let n = sorted.count
    if n % 2 == 1 {
        return Double(sorted[n / 2])
    } else {
        return (Double(sorted[n / 2 - 1]) + Double(sorted[n / 2])) / 2.0
    }
}
<|file_separator|>

func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return (Double(sorted[count/2-1]) + Double(sorted[count/2])) / 2
    } else {
        return Double(sorted[count/2])
    }
}
```swift
// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return (Double(sorted[count/2-1]) + Double(sorted[count/2])) / 2
    } else {
        return Double(sorted[count/2])
    }
}
<|file_separator|>

func median(l: [Int]) -> Double {
  let sorted = l.sorted()
  let count = sorted.count
  let mid = count / 2
  if count % 2 == 0 {
    return (Double(sorted[mid]) + Double(sorted[mid - 1])) / 2
  } else {
    return Double(sorted[mid])
  }
}
```swift
// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
  let sorted = l.sorted()
  let count = sorted.count
  let mid = count / 2
  if count % 2 == 0 {
    return (Double(sorted[mid]) + Double(sorted[mid - 1])) / 2
  } else {
    return Double(sorted[mid])
  }
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
  let sorted = l.sorted()
  let count = sorted.count
  let mid = count / 2
  if count % 2 == 0 {
    return (Double(sorted[mid]) + Double(sorted[mid - 1])) / 2
  } else {
    return Double(sorted[mid])
  }
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
  let sorted = l.sorted()
  let count = sorted.count
  let mid = count / 2
  if count % 2 == 0 {
    return (Double(sorted[mid]) + Double(sorted[mid - 1])) / 2
  } else {
    return Double(sorted[mid])
  }
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
  let sorted = l.sorted()
  let count = sorted.count
  let mid = count / 2
  if count % 2 == 0 {
    return (Double(sorted[mid]) + Double(sorted[mid - 1])) / 2
  } else {
    return Double(sorted[mid])
  }
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
  let sorted = l.sorted()
  let count = sorted.count
  let mid = count / 2
  if count % 2 == 0 {
    return (Double(sorted[mid]) + Double(sorted[mid - 1])) / 2
  } else {
    return Double(sorted[mid])
  }
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
  let sorted = l.sorted()
  let count = sorted.count
  let mid = count / 2
  if count % 2 == 0 {
    return (Double(sorted[mid]) + Double(sorted[mid - 1])) / 2
  } else {
    return Double(sorted[mid])
  }
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
  let sorted = l.sorted()
  let count = sorted.count
  let mid = count / 2
  if count % 2 == 0 {
    return (Double(sorted[mid]) + Double(sorted[

func median(l: [Int]) -> Double {
  let sorted = l.sorted()
  let middle = sorted.count / 2
  if sorted.count % 2 == 0 {
    return (Double(sorted[middle - 1]) + Double(sorted[middle])) / 2
  } else {
    return Double(sorted[middle])
  }
}
```swift
// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
  let sorted = l.sorted()
  let middle = sorted.count / 2
  if sorted.count % 2 == 0 {
    return (Double(sorted[middle - 1]) + Double(sorted[middle])) / 2
  } else {
    return Double(sorted[middle])
  }
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
  let sorted = l.sorted()
  let middle = sorted.count / 2
  if sorted.count % 2 == 0 {
    return (Double(sorted[middle - 1]) + Double(sorted[middle])) / 2
  } else {
    return Double(sorted[middle])
  }
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
  let sorted = l.sorted()
  let middle = sorted.count / 2
  if sorted.count % 2 == 0 {
    return (Double(sorted[middle - 1]) + Double(sorted[middle])) / 2
  } else {
    return Double(sorted[middle])
  }
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
  let sorted = l.sorted()
  let middle = sorted.count / 2
  if sorted.count % 2 == 0 {
    return (Double(sorted[middle - 1]) + Double(sorted[middle])) / 2
  } else {
    return Double(sorted[middle])
  }
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
  let sorted = l.sorted()
  let middle = sorted.count / 2
  if sorted.count % 2 == 0 {
    return (Double(sorted[middle - 1]) + Double(sorted[middle])) / 2
  } else {
    return Double(sorted[middle])
  }
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
  let sorted = l.sorted()
  let middle = sorted.count / 2
  if sorted.count % 2 == 0 {
    return (Double(sorted[middle - 1]) + Double(sorted[middle])) / 2
  } else {
    return Double(sorted[middle])
  }
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
  let sorted = l.sorted()
  let middle = sorted.count / 2
  if sorted.count % 2 == 0 {
    return (Double(sorted[middle - 1]) + Double(sorted[middle])) / 2
  } else {
    return Double(sorted[middle])
  }
}

func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return Double(sorted[count/2-1] + sorted[count/2]) / 2.0
    } else {
        return Double(sorted[count/2])
    }
}
```swift
// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    let sorted = l.sorted()
    let count = sorted.count
    if count % 2 == 0 {
        return Double(sorted[count/2-1] + sorted[count/2]) / 2.0
    } else {
        return Double(sorted[count/2])
    }
}
<|file_separator|>

func median(l: [Int]) -> Double {
    // Your code here
    var l = l
    l.sort()
    if l.count % 2 == 0 {
        return (Double(l[l.count/2]) + Double(l[l.count/2-1])) / 2
    } else {
        return Double(l[l.count/2])
    }
}
```swift
// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    // Your code here
    var l = l
    l.sort()
    if l.count % 2 == 0 {
        return (Double(l[l.count/2]) + Double(l[l.count/2-1])) / 2
    } else {
        return Double(l[l.count/2])
    }
}

// Return median of elements in the array l.
// median(l: [3, 1, 2, 4, 5]) == 3
// median(l: [-10, 4, 6, 1000, 10, 20]) == 15.0
func median(l: [Int]) -> Double {
    // Your code here
    var l = l
    l.sort()
    if l.count % 2 == 0 {
        return (Double(l[l.count/2]) + Double(l[l.count/2-1])) / 2
    } else {
        return Double(l[l.count/2])
    }
}
<|file_separator|>

```swift
// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    var text = text.lowercased()
    text = text.replacingOccurrences(of: " ", with: "")
    text = text.replacingOccurrences(of: ",", with: "")
    text = text.replacingOccurrences(of: ".", with: "")
    text = text.replacingOccurrences(of: "!", with: "")
    text = text.replacingOccurrences(of: "?", with: "")
    text = text.replacingOccurrences(of: ":", with: "")
    text = text.replacingOccurrences(of: ";", with: "")
    text = text.replacingOccurrences(of: "-", with: "")
    text = text.replacingOccurrences(of: "'", with: "")
    text = text.replacingOccurrences(of: "\"", with: "")
    text = text.replacingOccurrences(of: "(", with: "")
    text = text.replacingOccurrences(of: ")", with: "")
    text = text.replacingOccurrences(of: "[", with: "")
    text = text.replacingOccurrences(of: "]", with: "")
    text = text.replacingOccurrences(of: "{", with: "")
    text = text.replacingOccurrences(of: "}", with: "")
    text = text.replacingOccurrences(of: "0", with: "")
    text = text.replacingOccurrences(of: "1", with: "")
    text = text.replacingOccurrences(of: "2", with: "")
    text = text.replacingOccurrences(of: "3", with: "")
    text = text.replacingOccurrences(of: "4", with: "")
    text = text.replacingOccurrences(of: "5", with: "")
    text = text.replacingOccurrences(of: "6", with: "")
    text = text.replacingOccurrences(of: "7", with: "")
    text = text.replacingOccurrences(of: "8", with: "")
    text = text.replacingOccurrences(of: "9", with: "")
    text = text.replacingOccurrences(of: "0", with: "")
    text = text.replacingOccurrences(of: "1", with: "")
    text = text.replacingOccurrences(of: "2", with: "")
    text = text.replacingOccurrences(of: "3", with: "")
    text = text.replacingOccurrences(of: "4", with: "")
    text = text.replacingOccurrences(of: "5", with: "")
    text = text.replacingOccurrences(of: "6", with: "")
    text = text.replacingOccurrences(of: "7", with: "")
    text = text.replacingOccurrences(of: "8", with: "")
    text = text.replacingOccurrences(of: "9", with: "")
    text = text.replacingOccurrences(of: "0", with: "")
    text = text.replacingOccurrences(of: "1", with: "")
    text = text.replacingOccurrences(of: "2", with: "")
    text = text.replacingOccurrences(of: "3", with: "")
    text = text.replacingOccurrences(of: "4", with: "")
    text = text.replacingOccurrences(of: "5", with: "")
    text = text.replacingOccurrences(of: "6", with: "")
    text = text.replacingOccurrences(of: "7", with: "")
    text = text.replacingOccurrences(of: "8", with: "")
    text = text.replacingOccurrences(of: "9", with: "")
    text = text.replacingOccurrences(of: "0", with: "")
    text = text.replacingOccurrences(of: "1", with: "")
    text = text.replacingOccurrences(of: "2", with: "")
    text = text.replacingOccurrences(of: "3", with: "")
    text = text.replacingOccurrences(of: "4", with: "")
    text = text.replacingOccurrences(of: "5", with: "")
    text = text.replacingOccurrences(of: "6", with: "")
    text = text.replacingOccurrences(of: "7", with: "")
    text = text.replacingOccurrences(of: "8", with: "")
    text = text.replacingOccurrences(of: "9", with: "")
    text = text.replacingOccurrences(of: "0", with: "")
    text = text.replacingOccurrences(of: "1", with: "")
    text = text.replacingOccurrences(of: "2", with: "")
    text = text.replacingOccurrences(of: "3", with: "")
    text = text.replacingOccurrences(of: "4
XCTAssertTrue(isPalindrome(text: "") == true) // cannot find 'isPalindrome' in scope
XCTAssertTrue(isPalindrome(text: "aba") == true) // cannot find 'isPalindrome' in scope
XCTAssertTrue(isPalindrome(text: "aaaaa") == true) // cannot find 'isPalindrome' in scope
XCTAssertTrue(isPalindrome(text: "zbcd") == false) // cannot find 'isPalindrome' in scope
XCTAssertTrue(isPalindrome(text: "xywyx") == true) // cannot find 'isPalindrome' in scope
XCTAssertTrue(isPalindrome(text: "xywyz") == false) // cannot find 'isPalindrome' in scope
XCTAssertTrue(isPalindrome(text: "xywzx") == false) // cannot find 'isPalindrome' in scope

func isPalindrome(text: String) -> Bool {
    var text = text.lowercased()
    text = text.replacingOccurrences(of: " ", with: "")
    var reversedText = ""
    for i in (0..<text.count).reversed() {
        reversedText += String(text[text.index(text.startIndex, offsetBy: i)])
    }
    return text == reversedText
}
```swift
// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    var text = text.lowercased()
    text = text.replacingOccurrences(of: " ", with: "")
    var reversedText = ""
    for i in (0..<text.count).reversed() {
        reversedText += String(text[text.index(text.startIndex, offsetBy: i)])
    }
    return text == reversedText
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    var text = text.lowercased()
    text = text.replacingOccurrences(of: " ", with: "")
    var reversedText = ""
    for i in (0..<text.count).reversed() {
        reversedText += String(text[text.index(text.startIndex, offsetBy: i)])
    }
    return text == reversedText
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    var text = text.lowercased()
    text = text.replacingOccurrences(of: " ", with: "")
    var reversedText = ""
    for i in (0..<text.count).reversed() {
        reversedText += String(text[text.index(text.startIndex, offsetBy: i)])
    }
    return text == reversedText
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    var text = text.lowercased()
    text = text.replacingOccurrences(of: " ", with: "")
    var reversedText = ""
    for i in (0..<text.count).reversed() {
        reversedText += String(text[text.index(text.startIndex, offsetBy: i)])
    }
    return text == reversedText
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    var text = text.lowercased()
    text = text.replacingOccurrences(of: " ", with: "")
    var reversedText = ""
    for i in (0..<text.count).reversed() {
        reversedText += String(text[text.index(text.startIndex, offsetBy: i)])
    }
    return text == reversedText
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    var text = text.lowercased()
    text = text.replacingOccurrences(of: " ", with: "")
    var reversedText = ""
    for i in (0..<text.count).reversed() {
        reversedText += String(text[text.index(text.startIndex, offsetBy: i)])
    }
    return text == reversedText
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    var text = text.lowercased()
    text = text.replacingOccurrences(of: " ", with: "")
    var reversedText = ""
    for i in (0..<text.count).reversed() {
        reversedText += String(text[text.index(text.startIndex, offsetBy: i)])
    }
    return text == reversedText
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") ==

func isPalindrome(text: String) -> Bool {
    var text = text.lowercased()
    text = text.replacingOccurrences(of: " ", with: "")
    var left = 0
    var right = text.count - 1
    while left < right {
        if text[left] != text[right] {
            return false
        }
        left += 1
        right -= 1
    }
    return true
}
```swift
// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    var text = text.lowercased()
    text = text.replacingOccurrences(of: " ", with: "")
    var left = 0
    var right = text.count - 1
    while left < right {
        if text[left] != text[right] {
            return false
        }
        left += 1
        right -= 1
    }
    return true
}
<|file_separator|>
if text[left] != text[right] { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if text[left] != text[right] { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func isPalindrome(text: String) -> Bool {
    let lowercased = text.lowercased()
    let filtered = lowercased.filter { $0.isLetter }
    let reversed = String(filtered.reversed())
    return filtered == reversed
}
```swift
// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let lowercased = text.lowercased()
    let filtered = lowercased.filter { $0.isLetter }
    let reversed = String(filtered.reversed())
    return filtered == reversed
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let lowercased = text.lowercased()
    let filtered = lowercased.filter { $0.isLetter }
    let reversed = String(filtered.reversed())
    return filtered == reversed
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let lowercased = text.lowercased()
    let filtered = lowercased.filter { $0.isLetter }
    let reversed = String(filtered.reversed())
    return filtered == reversed
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let lowercased = text.lowercased()
    let filtered = lowercased.filter { $0.isLetter }
    let reversed = String(filtered.reversed())
    return filtered == reversed
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let lowercased = text.lowercased()
    let filtered = lowercased.filter { $0.isLetter }
    let reversed = String(filtered.reversed())
    return filtered == reversed
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let lowercased = text.lowercased()
    let filtered = lowercased.filter { $0.isLetter }
    let reversed = String(filtered.reversed())
    return filtered == reversed
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let lowercased = text.lowercased()
    let filtered = lowercased.filter { $0.isLetter }
    let reversed = String(filtered.reversed())
    return filtered == reversed
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let lowercased = text.lowercased()
    let filtered = lowercased.filter { $0.isLetter }
    let reversed = String(filtered.reversed())
    return filtered == reversed
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let lowercased = text.lowercased()
    let filtered = lowercased.filter { $0.isLetter }
    let reversed = String(filtered.reversed())
    return filtered == reversed
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) ->

func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let letters = text.filter { $0.isLetter }
    return letters == String(letters.reversed())
}
```swift
// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let letters = text.filter { $0.isLetter }
    return letters == String(letters.reversed())
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let letters = text.filter { $0.isLetter }
    return letters == String(letters.reversed())
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let letters = text.filter { $0.isLetter }
    return letters == String(letters.reversed())
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let letters = text.filter { $0.isLetter }
    return letters == String(letters.reversed())
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let letters = text.filter { $0.isLetter }
    return letters == String(letters.reversed())
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let letters = text.filter { $0.isLetter }
    return letters == String(letters.reversed())
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let letters = text.filter { $0.isLetter }
    return letters == String(letters.reversed())
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let letters = text.filter { $0.isLetter }
    return letters == String(letters.reversed())
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let letters = text.filter { $0.isLetter }
    return letters == String(letters.reversed())
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let letters = text.filter { $0.isLetter }
    return letters == String(letters.reversed())
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true

func isPalindrome(text: String) -> Bool {
    var reversed = ""
    for i in 0..<text.count {
        reversed += String(text[text.index(text.startIndex, offsetBy: text.count - i - 1)])
    }
    return text == reversed
}
```swift
// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    var reversed = ""
    for i in 0..<text.count {
        reversed += String(text[text.index(text.startIndex, offsetBy: text.count - i - 1)])
    }
    return text == reversed
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    var reversed = ""
    for i in 0..<text.count {
        reversed += String(text[text.index(text.startIndex, offsetBy: text.count - i - 1)])
    }
    return text == reversed
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    var reversed = ""
    for i in 0..<text.count {
        reversed += String(text[text.index(text.startIndex, offsetBy: text.count - i - 1)])
    }
    return text == reversed
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    var reversed = ""
    for i in 0..<text.count {
        reversed += String(text[text.index(text.startIndex, offsetBy: text.count - i - 1)])
    }
    return text == reversed
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    var reversed = ""
    for i in 0..<text.count {
        reversed += String(text[text.index(text.startIndex, offsetBy: text.count - i - 1)])
    }
    return text == reversed
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    var reversed = ""
    for i in 0..<text.count {
        reversed += String(text[text.index(text.startIndex, offsetBy: text.count - i - 1)])
    }
    return text == reversed
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    var reversed = ""
    for i in 0..<text.count {
        reversed += String(text[text.index(text.startIndex, offsetBy: text.count - i - 1)])
    }
    return text == reversed
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    var reversed = ""
    for i in 0..<text.count {
        reversed += String(text[text.index(text.startIndex, offsetBy: text.count - i - 1)])
    }
    return text == reversed
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    var reversed = ""
    for i in 0..<text.count {
        reversed += String(

func isPalindrome(text: String) -> Bool {
    let chars = Array(text)
    var i = 0
    var j = chars.count - 1
    while i < j {
        if chars[i] != chars[j] {
            return false
        }
        i += 1
        j -= 1
    }
    return true
}
```swift
// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let chars = Array(text)
    var i = 0
    var j = chars.count - 1
    while i < j {
        if chars[i] != chars[j] {
            return false
        }
        i += 1
        j -= 1
    }
    return true
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let chars = Array(text)
    var i = 0
    var j = chars.count - 1
    while i < j {
        if chars[i] != chars[j] {
            return false
        }
        i += 1
        j -= 1
    }
    return true
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let chars = Array(text)
    var i = 0
    var j = chars.count - 1
    while i < j {
        if chars[i] != chars[j] {
            return false
        }
        i += 1
        j -= 1
    }
    return true
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let chars = Array(text)
    var i = 0
    var j = chars.count - 1
    while i < j {
        if chars[i] != chars[j] {
            return false
        }
        i += 1
        j -= 1
    }
    return true
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let chars = Array(text)
    var i = 0
    var j = chars.count - 1
    while i < j {
        if chars[i] != chars[j] {
            return false
        }
        i += 1
        j -= 1
    }
    return true
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let chars = Array(text)
    var i = 0
    var j = chars.count - 1
    while i < j {
        if chars[i] != chars[j] {
            return false
        }
        i += 1
        j -= 1
    }
    return true
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let chars = Array(text)
    var i = 0
    var j = chars.count - 1
    while i < j {
        if chars[i] != chars[j] {
            return false
        }
        i += 1
        j -= 1
    }
    return true
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let chars = Array(text)
    var i = 0
    var j = chars.

func isPalindrome(text: String) -> Bool {
    let lowercased = text.lowercased()
    let filtered = lowercased.filter { $0.isLetter }
    let reversed = filtered.reversed()
    return filtered == String(reversed)
}
```swift
// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let lowercased = text.lowercased()
    let filtered = lowercased.filter { $0.isLetter }
    let reversed = filtered.reversed()
    return filtered == String(reversed)
}
<|file_separator|>

func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let textArray = Array(text)
    var isPalindrome = true
    for i in 0..<textArray.count/2 {
        if textArray[i] != textArray[textArray.count - 1 - i] {
            isPalindrome = false
            break
        }
    }
    return isPalindrome
}
```swift
// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let textArray = Array(text)
    var isPalindrome = true
    for i in 0..<textArray.count/2 {
        if textArray[i] != textArray[textArray.count - 1 - i] {
            isPalindrome = false
            break
        }
    }
    return isPalindrome
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let textArray = Array(text)
    var isPalindrome = true
    for i in 0..<textArray.count/2 {
        if textArray[i] != textArray[textArray.count - 1 - i] {
            isPalindrome = false
            break
        }
    }
    return isPalindrome
}
<|file_separator|>

func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let textArray = Array(text)
    var left = 0
    var right = textArray.count - 1
    while left < right {
        if textArray[left] != textArray[right] {
            return false
        }
        left += 1
        right -= 1
    }
    return true
}
```swift
// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let textArray = Array(text)
    var left = 0
    var right = textArray.count - 1
    while left < right {
        if textArray[left] != textArray[right] {
            return false
        }
        left += 1
        right -= 1
    }
    return true
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let textArray = Array(text)
    var left = 0
    var right = textArray.count - 1
    while left < right {
        if textArray[left] != textArray[right] {
            return false
        }
        left += 1
        right -= 1
    }
    return true
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let textArray = Array(text)
    var left = 0
    var right = textArray.count - 1
    while left < right {
        if textArray[left] != textArray[right] {
            return false
        }
        left += 1
        right -= 1
    }
    return true
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let textArray = Array(text)
    var left = 0
    var right = textArray.count - 1
    while left < right {
        if textArray[left] != textArray[right] {
            return false
        }
        left += 1
        right -= 1
    }
    return true
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let textArray = Array(text)
    var left = 0
    var right = textArray.count - 1
    while left < right {
        if textArray[left] != textArray[right] {
            return false
        }
        left += 1
        right -= 1
    }
    return true
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let textArray = Array(text)
    var left = 0
    var right = textArray.count - 1
    while left < right {
        if textArray[left] != textArray[right] {
            return false
        }
        left += 1
        right -= 1
    }
    return true
}

// Checks if given string is a palindrome
// isPalindrome(text: "") == true
// isPalindrome(text: "aba") == true
// isPalindrome(text: "aaaaa") == true
// isPalindrome(text: "zbcd") == false
func isPalindrome(text: String) -> Bool {
    let text = text.lowercased()
    let textArray = Array(text)
    var left = 0
    var right = textArray.count - 1
    while left < right {
        if textArray[left] != textArray[right] {
            return false
        }
        left += 1
        right -= 1
    

```swift
// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
  var n = n
  var p = p
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n =
XCTAssertTrue(modp(n: 3, p: 5) == 3) // cannot find 'modp' in scope
XCTAssertTrue(modp(n: 1101, p: 101) == 2) // cannot find 'modp' in scope
XCTAssertTrue(modp(n: 0, p: 101) == 1) // cannot find 'modp' in scope
XCTAssertTrue(modp(n: 3, p: 11) == 8) // cannot find 'modp' in scope
XCTAssertTrue(modp(n: 100, p: 101) == 1) // cannot find 'modp' in scope
XCTAssertTrue(modp(n: 30, p: 5) == 4) // cannot find 'modp' in scope
XCTAssertTrue(modp(n: 31, p: 5) == 3) // cannot find 'modp' in scope

func modp(n: Int, p: Int) -> Int {
  if n == 0 {
    return 1
  }
  if n < 0 {
    return modp(n: p - n, p: p)
  }
  if n < p {
    return n
  }
  return modp(n: n % p, p: p)
}
```swift
// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
  if n == 0 {
    return 1
  }
  if n < 0 {
    return modp(n: p - n, p: p)
  }
  if n < p {
    return n
  }
  return modp(n: n % p, p: p)
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
  if n == 0 {
    return 1
  }
  if n < 0 {
    return modp(n: p - n, p: p)
  }
  if n < p {
    return n
  }
  return modp(n: n % p, p: p)
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
  if n == 0 {
    return 1
  }
  if n < 0 {
    return modp(n: p - n, p: p)
  }
  if n < p {
    return n
  }
  return modp(n: n % p, p: p)
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
  if n == 0 {
    return 1
  }
  if n < 0 {
    return modp(n: p - n, p: p)
  }
  if n < p {
    return n
  }
  return modp(n: n % p, p: p)
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
  if n == 0 {
    return 1
  }
  if n < 0 {
    return modp(n: p - n, p: p)
  }
  if n < p {
    return n
  }
  return modp(n: n % p, p: p)
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 10
 // XCTAssertTrue failed

func modp(n: Int, p: Int) -> Int {
  if n < 0 {
    return modp(n: p - (-n) % p, p: p)
  }
  if n == 0 {
    return 1
  }
  if n == 1 {
    return n
  }
  if n % 2 == 0 {
    return modp(n: n / 2, p: p) * modp(n: n / 2, p: p) % p
  }
  return n * modp(n: n - 1, p: p) % p
}
```swift
// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
  if n < 0 {
    return modp(n: p - (-n) % p, p: p)
  }
  if n == 0 {
    return 1
  }
  if n == 1 {
    return n
  }
  if n % 2 == 0 {
    return modp(n: n / 2, p: p) * modp(n: n / 2, p: p) % p
  }
  return n * modp(n: n - 1, p: p) % p
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
  if n < 0 {
    return modp(n: p - (-n) % p, p: p)
  }
  if n == 0 {
    return 1
  }
  if n == 1 {
    return n
  }
  if n % 2 == 0 {
    return modp(n: n / 2, p: p) * modp(n: n / 2, p: p) % p
  }
  return n * modp(n: n - 1, p: p) % p
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
  if n < 0 {
    return modp(n: p - (-n) % p, p: p)
  }
  if n == 0 {
    return 1
  }
  if n == 1 {
    return n
  }
  if n % 2 == 0 {
    return modp(n: n / 2, p: p) * modp(n: n / 2, p: p) % p
  }
  return n * modp(n: n - 1, p: p) % p
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
  if n < 0 {
    return modp(n: p - (-n) % p, p: p)
  }
  if n == 0 {
    return 1
  }
  if n == 1 {
    return n
  }
  if n % 2 == 0 {
    return modp(n: n / 2, p: p) * modp(n: n / 2, p: p) % p
  }
  return n * modp(n: n - 1, p: p) % p
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 
 // XCTAssertTrue failed

func modp(n: Int, p: Int) -> Int {
  var n = n
  var p = p
  if n < 0 {
    n = n % p + p
  }
  return n % p
}
```swift
// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
  var n = n
  var p = p
  if n < 0 {
    n = n % p + p
  }
  return n % p
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
  var n = n
  var p = p
  if n < 0 {
    n = n % p + p
  }
  return n % p
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
  var n = n
  var p = p
  if n < 0 {
    n = n % p + p
  }
  return n % p
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
  var n = n
  var p = p
  if n < 0 {
    n = n % p + p
  }
  return n % p
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
  var n = n
  var p = p
  if n < 0 {
    n = n % p + p
  }
  return n % p
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
  var n = n
  var p = p
  if n < 0 {
    n = n % p + p
  }
  return n % p
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101
var p = p // variable 'p' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func modp(n: Int, p: Int) -> Int {
    if n == 0 {
        return 1
    }
    if n < 0 {
        return modp(n: -n, p: p)
    }
    if n < p {
        return n
    }
    return modp(n: n % p, p: p)
}
```swift
// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
    if n == 0 {
        return 1
    }
    if n < 0 {
        return modp(n: -n, p: p)
    }
    if n < p {
        return n
    }
    return modp(n: n % p, p: p)
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
    if n == 0 {
        return 1
    }
    if n < 0 {
        return modp(n: -n, p: p)
    }
    if n < p {
        return n
    }
    return modp(n: n % p, p: p)
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
    if n == 0 {
        return 1
    }
    if n < 0 {
        return modp(n: -n, p: p)
    }
    if n < p {
        return n
    }
    return modp(n: n % p, p: p)
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
    if n == 0 {
        return 1
    }
    if n < 0 {
        return modp(n: -n, p: p)
    }
    if n < p {
        return n
    }
    return modp(n: n % p, p: p)
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
    if n == 0 {
        return 1
    }
    if n < 0 {
        return modp(n: -n, p: p)
    }
    if n < p {
        return n
    }
    return modp(n: n % p, p: p)
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
 // XCTAssertTrue failed

func modp(n: Int, p: Int) -> Int {
    if n == 0 {
        return 1
    }
    var n = n
    var p = p
    var r = 0
    while n > 0 {
        if n % 2 == 1 {
            r = (r + p) % p
        }
        n = n / 2
        p = (p * p) % p
    }
    return r
}
```swift
// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
    if n == 0 {
        return 1
    }
    var n = n
    var p = p
    var r = 0
    while n > 0 {
        if n % 2 == 1 {
            r = (r + p) % p
        }
        n = n / 2
        p = (p * p) % p
    }
    return r
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
    if n == 0 {
        return 1
    }
    var n = n
    var p = p
    var r = 0
    while n > 0 {
        if n % 2 == 1 {
            r = (r + p) % p
        }
        n = n / 2
        p = (p * p) % p
    }
    return r
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
    if n == 0 {
        return 1
    }
    var n = n
    var p = p
    var r = 0
    while n > 0 {
        if n % 2 == 1 {
            r = (r + p) % p
        }
        n = n / 2
        p = (p * p) % p
    }
    return r
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
    if n == 0 {
        return 1
    }
    var n = n
    var p = p
    var r = 0
    while n > 0 {
        if n % 2 == 1 {
            r = (r + p) % p
        }
        n = n / 2
        p = (p * p) % p
    }
    return r
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
    if n == 0 {
        return 1
    }
    var n = n
    var p = p
    var r = 0
    while n > 0 {
        if n % 2 == 1 {
            r = (r + p) % p
        }
        n = n / 2
        p = (p * p) % p
    }
    return r
}

// Return 2^n modulo
 // Fatal error: Division by zero in remainder operation

```swift
// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
  var n = n
  var p = p
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n =
XCTAssertTrue(modp(n: 3, p: 5) == 3) // cannot find 'modp' in scope
XCTAssertTrue(modp(n: 1101, p: 101) == 2) // cannot find 'modp' in scope
XCTAssertTrue(modp(n: 0, p: 101) == 1) // cannot find 'modp' in scope
XCTAssertTrue(modp(n: 3, p: 11) == 8) // cannot find 'modp' in scope
XCTAssertTrue(modp(n: 100, p: 101) == 1) // cannot find 'modp' in scope
XCTAssertTrue(modp(n: 30, p: 5) == 4) // cannot find 'modp' in scope
XCTAssertTrue(modp(n: 31, p: 5) == 3) // cannot find 'modp' in scope

```swift
// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
  var n = n
  var p = p
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n = n % p + p
  }
  if n < 0 {
    n =
XCTAssertTrue(modp(n: 3, p: 5) == 3) // cannot find 'modp' in scope
XCTAssertTrue(modp(n: 1101, p: 101) == 2) // cannot find 'modp' in scope
XCTAssertTrue(modp(n: 0, p: 101) == 1) // cannot find 'modp' in scope
XCTAssertTrue(modp(n: 3, p: 11) == 8) // cannot find 'modp' in scope
XCTAssertTrue(modp(n: 100, p: 101) == 1) // cannot find 'modp' in scope
XCTAssertTrue(modp(n: 30, p: 5) == 4) // cannot find 'modp' in scope
XCTAssertTrue(modp(n: 31, p: 5) == 3) // cannot find 'modp' in scope

func modp(n: Int, p: Int) -> Int {
    if n == 0 {
        return 1
    }
    if n % 2 == 0 {
        return modp(n: n / 2, p: p) * modp(n: n / 2, p: p) % p
    }
    return n * modp(n: n - 1, p: p) % p
}
```swift
// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
    if n == 0 {
        return 1
    }
    if n % 2 == 0 {
        return modp(n: n / 2, p: p) * modp(n: n / 2, p: p) % p
    }
    return n * modp(n: n - 1, p: p) % p
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
    if n == 0 {
        return 1
    }
    if n % 2 == 0 {
        return modp(n: n / 2, p: p) * modp(n: n / 2, p: p) % p
    }
    return n * modp(n: n - 1, p: p) % p
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
    if n == 0 {
        return 1
    }
    if n % 2 == 0 {
        return modp(n: n / 2, p: p) * modp(n: n / 2, p: p) % p
    }
    return n * modp(n: n - 1, p: p) % p
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
    if n == 0 {
        return 1
    }
    if n % 2 == 0 {
        return modp(n: n / 2, p: p) * modp(n: n / 2, p: p) % p
    }
    return n * modp(n: n - 1, p: p) % p
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
    if n == 0 {
        return 1
    }
    if n % 2 == 0 {
        return modp(n: n / 2, p: p) * modp(n: n / 2, p: p) % p
    }
    return n * modp(n: n - 1, p: p) % p
}

// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101
 // XCTAssertTrue failed

func modp(n: Int, p: Int) -> Int {
    var n = n
    var p = p
    while n > 0 {
        n = n - p
        if n < 0 {
            n = n + p
        }
    }
    return n
}
```swift
// Return 2^n modulo p (be aware of numerics).
// modp(n: 3, p: 5) == 3
// modp(n: 1101, p: 101) == 2
// modp(n: 0, p: 101) == 1
// modp(n: 3, p: 11) == 8
// modp(n: 100, p: 101) == 1
func modp(n: Int, p: Int) -> Int {
    var n = n
    var p = p
    while n > 0 {
        n = n - p
        if n < 0 {
            n = n + p
        }
    }
    return n
}
<|file_separator|>
var p = p // variable 'p' was never mutated; consider changing to 'let' constant

func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if !("aeiouAEIOU".contains(char)) {
            result += String(char)
        }
    }
    return result
}
```swift
// remove_vowels is a function that takes string and returns string without vowels.
// removeVowels(text: "") == ""
// removeVowels(text: "abcdef") == "bcdf"
// removeVowels(text: "aaaaa") == ""
// removeVowels(text: "aaBAA") == "B"
// removeVowels(text: "zbcd") == "zbcd"
func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if !("aeiouAEIOU".contains(char)) {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>

func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if !("aeiou".contains(char)) {
            result += String(char)
        }
    }
    return result
}
```swift
// remove_vowels is a function that takes string and returns string without vowels.
// removeVowels(text: "") == ""
// removeVowels(text: "abcdef") == "bcdf"
// removeVowels(text: "aaaaa") == ""
// removeVowels(text: "aaBAA") == "B"
// removeVowels(text: "zbcd") == "zbcd"
func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if !("aeiou".contains(char)) {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if !["a", "e", "i", "o", "u"].contains(String(char).lowercased()) {
            result += String(char)
        }
    }
    return result
}
```swift
// remove_vowels is a function that takes string and returns string without vowels.
// removeVowels(text: "") == ""
// removeVowels(text: "abcdef") == "bcdf"
// removeVowels(text: "aaaaa") == ""
// removeVowels(text: "aaBAA") == "B"
// removeVowels(text: "zbcd") == "zbcd"
func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if !["a", "e", "i", "o", "u"].contains(String(char).lowercased()) {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>

func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if !isVowel(char: char) {
            result += String(char)
        }
    }
    return result
}

func isVowel(char: Character) -> Bool {
    let vowels = ["a", "e", "i", "o", "u"]
    return vowels.contains(String(char).lowercased())
}
```swift
// remove_vowels is a function that takes string and returns string without vowels.
// removeVowels(text: "") == ""
// removeVowels(text: "abcdef") == "bcdf"
// removeVowels(text: "aaaaa") == ""
// removeVowels(text: "aaBAA") == "B"
// removeVowels(text: "zbcd") == "zbcd"
func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if !isVowel(char: char) {
            result += String(char)
        }
    }
    return result
}

func isVowel(char: Character) -> Bool {
    let vowels = ["a", "e", "i", "o", "u"]
    return vowels.contains(String(char).lowercased())
}
<|file_separator|>

func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if !("aeiouAEIOU".contains(char)) {
            result += String(char)
        }
    }
    return result
}
```swift
// remove_vowels is a function that takes string and returns string without vowels.
// removeVowels(text: "") == ""
// removeVowels(text: "abcdef") == "bcdf"
// removeVowels(text: "aaaaa") == ""
// removeVowels(text: "aaBAA") == "B"
// removeVowels(text: "zbcd") == "zbcd"
func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if !("aeiouAEIOU".contains(char)) {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>

func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            continue
        }
        result += String(char)
    }
    return result
}
```swift
// remove_vowels is a function that takes string and returns string without vowels.
// removeVowels(text: "") == ""
// removeVowels(text: "abcdef") == "bcdf"
// removeVowels(text: "aaaaa") == ""
// removeVowels(text: "aaBAA") == "B"
// removeVowels(text: "zbcd") == "zbcd"
func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            continue
        }
        result += String(char)
    }
    return result
}

// remove_vowels is a function that takes string and returns string without vowels.
// removeVowels(text: "") == ""
// removeVowels(text: "abcdef") == "bcdf"
// removeVowels(text: "aaaaa") == ""
// removeVowels(text: "aaBAA") == "B"
// removeVowels(text: "zbcd") == "zbcd"
func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            continue
        }
        result += String(char)
    }
    return result
}

// remove_vowels is a function that takes string and returns string without vowels.
// removeVowels(text: "") == ""
// removeVowels(text: "abcdef") == "bcdf"
// removeVowels(text: "aaaaa") == ""
// removeVowels(text: "aaBAA") == "B"
// removeVowels(text: "zbcd") == "zbcd"
func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            continue
        }
        result += String(char)
    }
    return result
}

// remove_vowels is a function that takes string and returns string without vowels.
// removeVowels(text: "") == ""
// removeVowels(text: "abcdef") == "bcdf"
// removeVowels(text: "aaaaa") == ""
// removeVowels(text: "aaBAA") == "B"
// removeVowels(text: "zbcd") == "zbcd"
func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            continue
        }
        result += String(char)
    }
    return result
}

// remove_vowels is a function that takes string and returns string without vowels.
// removeVowels(text: "") == ""
// removeVowels(text: "abcdef") == "bcdf"
// removeVowels(text: "aaaaa") == ""
// removeVowels(text: "aaBAA") == "B"
// removeVowels(text: "zbcd") == "zbcd"
func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            continue
        }
        result += String(char)
    }
    return result
}

// remove_vowels is a function that takes string and returns string without vowels.
// removeVowels(text: "") == ""
// removeVowels(text: "abcdef") == "bcdf"
// removeVowels(text: "aaaaa") == ""
// removeVowels(text: "aaBAA") == "B"
// removeVowels(text: "zbcd") == "zbcd"
func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            continue
        }
        result += String(char)
    }
    return result
}

// remove_vowels is a function that takes string and returns string without vowels.
// removeVowels(text: "") == ""
// removeVowels(text: "abcdef") == "bcdf"
// removeVowels(text: "aaaaa") == ""
// removeVowels(text: "aaBAA") == "B"
// removeVowels(text: "zb
 // XCTAssertTrue failed

func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if !("aeiou".contains(char)) {
            result += String(char)
        }
    }
    return result
}
```swift
// remove_vowels is a function that takes string and returns string without vowels.
// removeVowels(text: "") == ""
// removeVowels(text: "abcdef") == "bcdf"
// removeVowels(text: "aaaaa") == ""
// removeVowels(text: "aaBAA") == "B"
// removeVowels(text: "zbcd") == "zbcd"
func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if !("aeiou".contains(char)) {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if !["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"].contains(String(char)) {
            result += String(char)
        }
    }
    return result
}
```swift
// remove_vowels is a function that takes string and returns string without vowels.
// removeVowels(text: "") == ""
// removeVowels(text: "abcdef") == "bcdf"
// removeVowels(text: "aaaaa") == ""
// removeVowels(text: "aaBAA") == "B"
// removeVowels(text: "zbcd") == "zbcd"
func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if !["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"].contains(String(char)) {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>

func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if !("aeiouAEIOU".contains(char)) {
            result += String(char)
        }
    }
    return result
}
```swift
// remove_vowels is a function that takes string and returns string without vowels.
// removeVowels(text: "") == ""
// removeVowels(text: "abcdef") == "bcdf"
// removeVowels(text: "aaaaa") == ""
// removeVowels(text: "aaBAA") == "B"
// removeVowels(text: "zbcd") == "zbcd"
func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if !("aeiouAEIOU".contains(char)) {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>

func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if !("aeiou".contains(char)) {
            result += String(char)
        }
    }
    return result
}
```swift
// remove_vowels is a function that takes string and returns string without vowels.
// removeVowels(text: "") == ""
// removeVowels(text: "abcdef") == "bcdf"
// removeVowels(text: "aaaaa") == ""
// removeVowels(text: "aaBAA") == "B"
// removeVowels(text: "zbcd") == "zbcd"
func removeVowels(text: String) -> String {
    var result = ""
    for char in text {
        if !("aeiou".contains(char)) {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func belowThreshold(l: [Int], t: Int) -> Bool {
  return l.filter { $0 < t }.count == l.count
}

func aboveThreshold(l: [Int], t: Int) -> Bool {
  return l.filter { $0 > t }.count == l.count
}

func aboveThreshold(l: [Int], t: Int) -> Bool {
  return l.filter { $0 > t }.count == 0
}

func belowThreshold(l: [Int], t: Int) -> Bool {
  return l.filter { $0 < t }.count == 0
}
```swift
// Return true if all numbers in the array l are below threshold t.
// belowThreshold(l: [1, 2, 4, 10], t: 100) == true
// belowThreshold(l: [1, 20, 4, 10], t: 5) == false
func belowThreshold(l: [Int], t: Int) -> Bool {
  return l.filter { $0 < t }.count == l.count
}

// Return true if all numbers in the array l are above threshold t.
// aboveThreshold(l: [1, 2, 4, 10], t: 100) == false
// aboveThreshold(l: [1, 20, 4, 10], t: 5) == true
func aboveThreshold(l: [Int], t: Int) -> Bool {
  return l.filter { $0 > t }.count == l.count
}

// Return true if all numbers in the array l are above threshold t.
// aboveThreshold(l: [1, 2, 4, 10], t: 100) == false
// aboveThreshold(l: [1, 20, 4, 10], t: 5) == true
func aboveThreshold(l: [Int], t: Int) -> Bool {
  return l.filter { $0 > t }.count == 0
}

// Return true if all numbers in the array l are below threshold t.
// belowThreshold(l: [1, 2, 4, 10], t: 100) == true
// belowThreshold(l: [1, 20, 4, 10], t: 5) == false
func belowThreshold(l: [Int], t: Int) -> Bool {
  return l.filter { $0 < t }.count == 0
}

// Return true if all numbers in the array l are below threshold t.
// belowThreshold(l: [1, 2, 4, 10], t: 100) == true
// belowThreshold(l: [1, 20, 4, 10], t: 5) == false
func belowThreshold(l: [Int], t: Int) -> Bool {
  return l.filter { $0 < t }.count == l.count
}

// Return true if all numbers in the array l are above threshold t.
// aboveThreshold(l: [1, 2, 4, 10], t: 100) == false
// aboveThreshold(l: [1, 20, 4, 10], t: 5) == true
func aboveThreshold(l: [Int], t: Int) -> Bool {
  return l.filter { $0 > t }.count == l.count
}

// Return true if all numbers in the array l are above threshold t.
// aboveThreshold(l: [1, 2, 4, 10], t: 100) == false
// aboveThreshold(l: [1, 20, 4, 10], t: 5) == true
func aboveThreshold(l: [Int], t: Int) -> Bool {
  return l.filter { $0 > t }.count == 0
}

// Return true if all numbers in the array l are below threshold t.
// belowThreshold(l: [1, 2, 4, 10], t: 100) == true
// belowThreshold(l: [1, 20, 4, 10], t: 5) == false
func belowThreshold(l: [Int], t: Int) -> Bool {
  return l.filter { $0 < t }.count == 0
}

// Return true if all numbers in the array l are below threshold t.
// belowThreshold(l: [1, 2, 4, 10], t: 100) == true
// belowThreshold(l: [1, 20, 4, 10], t: 5) == false
func belowThreshold(l: [Int], t: Int) -> Bool {
  return l.filter { $0 < t }.count == l.count
}

// Return true if all numbers in the array l are above threshold t.
// aboveThreshold(l: [1, 2, 4, 10], t: 100) == false
// aboveThreshold(l: [1, 20, 4, 10], t: 5) == true
func aboveThreshold(l: [Int], t: Int) -> Bool {
  return l.filter { $0 > t }.count == l.count
}

// Return true if all numbers in the array l are above threshold t.
// aboveThreshold(l: [1, 2
func aboveThreshold(l: [Int], t: Int) -> Bool { // invalid redeclaration of 'aboveThreshold(l:t:)'
func belowThreshold(l: [Int], t: Int) -> Bool { // invalid redeclaration of 'belowThreshold(l:t:)'

func belowThreshold(l: [Int], t: Int) -> Bool {
    for i in l {
        if i > t {
            return false
        }
    }
    return true
}

func contains1000(l: [Int]) -> Bool {
    for i in l {
        if i == 1000 {
            return true
        }
    }
    return false
}

func sum(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    return sum
}

func sumLessThan1000(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
        if sum > 1000 {
            return sum - i
        }
    }
    return sum
}

func sumGreaterThan1000(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
        if sum < 1000 {
            return sum - i
        }
    }
    return sum
}

func sumBetween1000And2000(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
        if sum > 1000 && sum < 2000 {
            return sum - i
        }
    }
    return sum
}
```swift
// Return true if all numbers in the array l are below threshold t.
// belowThreshold(l: [1, 2, 4, 10], t: 100) == true
// belowThreshold(l: [1, 20, 4, 10], t: 5) == false
func belowThreshold(l: [Int], t: Int) -> Bool {
    for i in l {
        if i > t {
            return false
        }
    }
    return true
}

// Return true if the array l contains a value of 1000.
// contains1000(l: [1, 2, 1000, 4, 10]) == true
// contains1000(l: [1, 2, 3, 4, 5]) == false
func contains1000(l: [Int]) -> Bool {
    for i in l {
        if i == 1000 {
            return true
        }
    }
    return false
}

// Return the sum of all the numbers in the array l.
// sum(l: [1, 2, 3, 4, 5]) == 15
// sum(l: [1000, 2000, 3000, 4000, 5000]) == 15000
func sum(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
    }
    return sum
}

// Return the sum of all the numbers in the array l, but only if the sum is less than 1000.
// sumLessThan1000(l: [1, 2, 3, 4, 5]) == 15
// sumLessThan1000(l: [1000, 2000, 3000, 4000, 5000]) == 15000
func sumLessThan1000(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
        if sum > 1000 {
            return sum - i
        }
    }
    return sum
}

// Return the sum of all the numbers in the array l, but only if the sum is greater than 1000.
// sumGreaterThan1000(l: [1, 2, 3, 4, 5]) == 15
// sumGreaterThan1000(l: [1000, 2000, 3000, 4000, 5000]) == 15000
func sumGreaterThan1000(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
        if sum < 1000 {
            return sum - i
        }
    }
    return sum
}

// Return the sum of all the numbers in the array l, but only if the sum is between 1000 and 2000.
// sumBetween1000And2000(l: [1, 2, 3, 4, 5]) == 15
// sumBetween1000And2000(l: [1000, 2000, 3000, 4000, 5000]) == 15000
func sumBetween1000And2000(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
        if sum > 1000 && sum < 2000 {
            return sum - i
        }
    }
    return sum
}

// Return the sum of all the numbers in the array l, but only if the sum is between 1000 and 2000.
// sumBetween1000And2000(l: [1, 2, 3, 4, 5]) == 15
// sumBetween1000And2000(l: [1000, 2000, 3000, 4000, 5000]) == 15000
func sumBetween1000And2000(l: [Int]) -> Int {
    var sum = 0
    for i in l {
        sum += i
        if sum > 1000 && sum < 2000 {
            return sum - i
        }
    }
    return sum
}

// Return the sum of
 // XCTAssertTrue failed

func belowThreshold(l: [Int], t: Int) -> Bool {
    for i in l {
        if i > t {
            return false
        }
    }
    return true
}
```swift
// Return true if all numbers in the array l are below threshold t.
// belowThreshold(l: [1, 2, 4, 10], t: 100) == true
// belowThreshold(l: [1, 20, 4, 10], t: 5) == false
func belowThreshold(l: [Int], t: Int) -> Bool {
    for i in l {
        if i > t {
            return false
        }
    }
    return true
}
<|file_separator|>
 // XCTAssertTrue failed

func belowThreshold(l: [Int], t: Int) -> Bool {
    for i in l {
        if i > t {
            return false
        }
    }
    return true
}
```swift
// Return true if all numbers in the array l are below threshold t.
// belowThreshold(l: [1, 2, 4, 10], t: 100) == true
// belowThreshold(l: [1, 20, 4, 10], t: 5) == false
func belowThreshold(l: [Int], t: Int) -> Bool {
    for i in l {
        if i > t {
            return false
        }
    }
    return true
}
<|file_separator|>
 // XCTAssertTrue failed

func belowThreshold(l: [Int], t: Int) -> Bool {
    return l.allSatisfy { $0 < t }
}
```swift
// Return true if all numbers in the array l are below threshold t.
// belowThreshold(l: [1, 2, 4, 10], t: 100) == true
// belowThreshold(l: [1, 20, 4, 10], t: 5) == false
func belowThreshold(l: [Int], t: Int) -> Bool {
    return l.allSatisfy { $0 < t }
}
<|file_separator|>

func belowThreshold(l: [Int], t: Int) -> Bool {
    for i in l {
        if i > t {
            return false
        }
    }
    return true
}

func aboveThreshold(l: [Int], t: Int) -> Bool {
    for i in l {
        if i < t {
            return false
        }
    }
    return true
}

func even(l: [Int]) -> Bool {
    for i in l {
        if i % 2 == 1 {
            return false
        }
    }
    return true
}

func odd(l: [Int]) -> Bool {
    for i in l {
        if i % 2 == 0 {
            return false
        }
    }
    return true
}

func prime(l: [Int]) -> Bool {
    for i in l {
        if i == 2 {
            return true
        }
        if i == 1 {
            return false
        }
        if i % 2 == 0 {
            return false
        }
        for j in 2...i {
            if i % j == 0 {
                if j == i {
                    return true
                }
                return false
            }
        }
    }
    return true
}

func notPrime(l: [Int]) -> Bool {
    for i in l {
        if i == 2 {
            return false
        }
        if i == 1 {
            return true
        }
        if i % 2 == 0 {
            return true
        }
        for j in 2...i {
            if i % j == 0 {
                if j == i {
                    return false
                }
                return true
            }
        }
    }
    return false
}

func belowThresholdAndEven(l: [Int], t: Int) -> Bool {
    for i in l {
        if i % 2 == 1 {
            return false
        }
        if i > t {
            return false
        }
    }
    return true
}

func aboveThresholdAndOdd(l: [Int], t: Int) -> Bool {
    for i in l {
        if i % 2 == 0 {
            return false
        }
        if i < t {
            return false
        }
    }
    return true
}
```swift
// Return true if all numbers in the array l are below threshold t.
// belowThreshold(l: [1, 2, 4, 10], t: 100) == true
// belowThreshold(l: [1, 20, 4, 10], t: 5) == false
func belowThreshold(l: [Int], t: Int) -> Bool {
    for i in l {
        if i > t {
            return false
        }
    }
    return true
}

// Return true if all numbers in the array l are above threshold t.
// aboveThreshold(l: [1, 2, 4, 10], t: 100) == false
// aboveThreshold(l: [1, 20, 4, 10], t: 5) == true
func aboveThreshold(l: [Int], t: Int) -> Bool {
    for i in l {
        if i < t {
            return false
        }
    }
    return true
}

// Return true if all numbers in the array l are even.
// even(l: [1, 2, 4, 10]) == false
// even(l: [2, 4, 10]) == true
func even(l: [Int]) -> Bool {
    for i in l {
        if i % 2 == 1 {
            return false
        }
    }
    return true
}

// Return true if all numbers in the array l are odd.
// odd(l: [1, 2, 4, 10]) == true
// odd(l: [2, 4, 10]) == false
func odd(l: [Int]) -> Bool {
    for i in l {
        if i % 2 == 0 {
            return false
        }
    }
    return true
}

// Return true if all numbers in the array l are prime.
// prime(l: [1, 2, 4, 10]) == false
// prime(l: [2, 3, 5, 7, 11]) == true
func prime(l: [Int]) -> Bool {
    for i in l {
        if i == 2 {
            return true
        }
        if i == 1 {
            return false
        }
        if i % 2 == 0 {
            return false
        }
        for j in 2...i {
            if i % j == 0 {
                if j == i {
                    return true
                }
                return false
            }
        }
    }
    return true
}

// Return true if all numbers in the array l are not prime.
// notPrime(l: [1, 2, 4, 10]) == true
// notPrime(l: [2, 3, 5, 7, 11]) == false
func notPrime(l: [Int]) -> Bool {
    for i in l {
        if i == 2 {
            return false
        }
        if i == 1 {
            return true
        }
        if i % 2 == 0 {
            return true
        }
        for j in 2...i {
            if i % j == 0 {
                if j == i {
                    return false
                }
                return true
            }
        }
    }
    return false
}

// Return true if all numbers in the array l are even and below threshold t.
// belowThresholdAndEven(l: [1, 2, 4, 10], t: 100) == false
// belowThresholdAndEven(l: [2, 4, 10], t: 5) == true
func belowThresholdAndEven(l: [Int], t: Int) -> Bool {
    for i in l {
        if i % 2 == 1 {
            return false
        }
        if i > t {
            return false
        }
    }
    return true
}

// Return true if all numbers in the array l are odd and above threshold t.
// aboveThresholdAndOdd(l: [1, 2, 4, 10], t: 100) == true
// aboveThresholdAndOdd(l: [2, 4, 10], t: 5) == false
func aboveThresholdAndOdd(l: [Int], t: Int) -> Bool {
    for i in l {
        if i % 2 == 0 {
            return false
        }
        if i < t {
            return false
        }
    }
    return true
}

// Return true if all numbers in the array l are prime and below threshold t.
// belowThresholdAndPrime(l: [1,
 // XCTAssertTrue failed

func belowThreshold(l: [Int], t: Int) -> Bool {
    for i in l {
        if i > t {
            return false
        }
    }
    return true
}
```swift
// Return true if all numbers in the array l are below threshold t.
// belowThreshold(l: [1, 2, 4, 10], t: 100) == true
// belowThreshold(l: [1, 20, 4, 10], t: 5) == false
func belowThreshold(l: [Int], t: Int) -> Bool {
    for i in l {
        if i > t {
            return false
        }
    }
    return true
}
<|file_separator|>
 // XCTAssertTrue failed

func belowThreshold(l: [Int], t: Int) -> Bool {
    for i in l {
        if i > t {
            return false
        }
    }
    return true
}
```swift
// Return true if all numbers in the array l are below threshold t.
// belowThreshold(l: [1, 2, 4, 10], t: 100) == true
// belowThreshold(l: [1, 20, 4, 10], t: 5) == false
func belowThreshold(l: [Int], t: Int) -> Bool {
    for i in l {
        if i > t {
            return false
        }
    }
    return true
}
<|file_separator|>
 // XCTAssertTrue failed

func belowThreshold(l: [Int], t: Int) -> Bool {
    for i in l {
        if i > t {
            return false
        }
    }
    return true
}
```swift
// Return true if all numbers in the array l are below threshold t.
// belowThreshold(l: [1, 2, 4, 10], t: 100) == true
// belowThreshold(l: [1, 20, 4, 10], t: 5) == false
func belowThreshold(l: [Int], t: Int) -> Bool {
    for i in l {
        if i > t {
            return false
        }
    }
    return true
}
<|file_separator|>
 // XCTAssertTrue failed

func belowThreshold(l: [Int], t: Int) -> Bool {
    for i in l {
        if i > t {
            return false
        }
    }
    return true
}
```swift
// Return true if all numbers in the array l are below threshold t.
// belowThreshold(l: [1, 2, 4, 10], t: 100) == true
// belowThreshold(l: [1, 20, 4, 10], t: 5) == false
func belowThreshold(l: [Int], t: Int) -> Bool {
    for i in l {
        if i > t {
            return false
        }
    }
    return true
}
<|file_separator|>
 // XCTAssertTrue failed

func add(x: Int, y: Int) -> Int {
    return x + y
}
```swift
// Add two numbers x and y
// add(x: 2, y: 3) == 5
// add(x: 5, y: 7) == 12
func add(x: Int, y: Int) -> Int {
    return x + y
}
<|file_separator|>

func add(x: Int, y: Int) -> Int {
    return x + y
}
```swift
// Add two numbers x and y
// add(x: 2, y: 3) == 5
// add(x: 5, y: 7) == 12
func add(x: Int, y: Int) -> Int {
    return x + y
}
<|file_separator|>

func add(x: Int, y: Int) -> Int {
    return x + y
}
```swift
// Add two numbers x and y
// add(x: 2, y: 3) == 5
// add(x: 5, y: 7) == 12
func add(x: Int, y: Int) -> Int {
    return x + y
}
<|file_separator|>

func add(x: Int, y: Int) -> Int {
    return x + y
}
```swift
// Add two numbers x and y
// add(x: 2, y: 3) == 5
// add(x: 5, y: 7) == 12
func add(x: Int, y: Int) -> Int {
    return x + y
}
<|file_separator|>

func add(x: Int, y: Int) -> Int {
    return x + y
}
```swift
// Add two numbers x and y
// add(x: 2, y: 3) == 5
// add(x: 5, y: 7) == 12
func add(x: Int, y: Int) -> Int {
    return x + y
}
<|file_separator|>

func add(x: Int, y: Int) -> Int {
    return x + y
}
```swift
// Add two numbers x and y
// add(x: 2, y: 3) == 5
// add(x: 5, y: 7) == 12
func add(x: Int, y: Int) -> Int {
    return x + y
}
<|file_separator|>

func add(x: Int, y: Int) -> Int {
    return x + y
}
```swift
// Add two numbers x and y
// add(x: 2, y: 3) == 5
// add(x: 5, y: 7) == 12
func add(x: Int, y: Int) -> Int {
    return x + y
}
<|file_separator|>

func add(x: Int, y: Int) -> Int {
    return x + y
}
```swift
// Add two numbers x and y
// add(x: 2, y: 3) == 5
// add(x: 5, y: 7) == 12
func add(x: Int, y: Int) -> Int {
    return x + y
}
<|file_separator|>

func add(x: Int, y: Int) -> Int {
    return x + y
}
```swift
// Add two numbers x and y
// add(x: 2, y: 3) == 5
// add(x: 5, y: 7) == 12
func add(x: Int, y: Int) -> Int {
    return x + y
}
<|file_separator|>

func add(x: Int, y: Int) -> Int {
    return x + y
}
```swift
// Add two numbers x and y
// add(x: 2, y: 3) == 5
// add(x: 5, y: 7) == 12
func add(x: Int, y: Int) -> Int {
    return x + y
}
<|file_separator|>

func sameChars(s0: String, s1: String) -> Bool {
  let s0Chars = s0.characters.sorted()
  let s1Chars = s1.characters.sorted()
  return s0Chars == s1Chars
}
```swift
// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
  let s0Chars = s0.characters.sorted()
  let s1Chars = s1.characters.sorted()
  return s0Chars == s1Chars
}
<|file_separator|>
let s0Chars = s0.characters.sorted() // 'characters' is unavailable: Please use String directly
let s1Chars = s1.characters.sorted() // 'characters' is unavailable: Please use String directly

func sameChars(s0: String, s1: String) -> Bool {
  var s0 = s0.lowercased()
  var s1 = s1.lowercased()
  var s0 = s0.sorted()
  var s1 = s1.sorted()
  for i in 0..<s0.count {
    if s0[i] != s1[i] {
      return false
    }
  }
  return true
}
```swift
// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
  var s0 = s0.lowercased()
  var s1 = s1.lowercased()
  var s0 = s0.sorted()
  var s1 = s1.sorted()
  for i in 0..<s0.count {
    if s0[i] != s1[i] {
      return false
    }
  }
  return true
}
<|file_separator|>
var s0 = s0.sorted() // invalid redeclaration of 's0'
var s1 = s1.sorted() // invalid redeclaration of 's1'

func sameChars(s0: String, s1: String) -> Bool {
    var s0Chars = [Character]()
    var s1Chars = [Character]()
    for char in s0 {
        s0Chars.append(char)
    }
    for char in s1 {
        s1Chars.append(char)
    }
    s0Chars.sort()
    s1Chars.sort()
    return s0Chars == s1Chars
}
```swift
// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
    var s0Chars = [Character]()
    var s1Chars = [Character]()
    for char in s0 {
        s0Chars.append(char)
    }
    for char in s1 {
        s1Chars.append(char)
    }
    s0Chars.sort()
    s1Chars.sort()
    return s0Chars == s1Chars
}

// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
    var s0Chars = [Character]()
    var s1Chars = [Character]()
    for char in s0 {
        s0Chars.append(char)
    }
    for char in s1 {
        s1Chars.append(char)
    }
    s0Chars.sort()
    s1Chars.sort()
    return s0Chars == s1Chars
}

// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
    var s0Chars = [Character]()
    var s1Chars = [Character]()
    for char in s0 {
        s0Chars.append(char)
    }
    for char in s1 {
        s1Chars.append(char)
    }
    s0Chars.sort()
    s1Chars.sort()
    return s0Chars == s1Chars
}

// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
    var s0Chars = [Character]()
    var s1Chars = [Character]()
    for char in s0 {
        s0Chars.append(char)
    }
    for char in s1 {
        s1Chars.append(char)
    }
    s0Chars.sort()
    s1Chars.sort()
    return s0Chars == s1Chars
}

// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String
 // XCTAssertTrue failed

func sameChars(s0: String, s1: String) -> Bool {
    var s0Chars = [Character]()
    var s1Chars = [Character]()
    for char in s0 {
        s0Chars.append(char)
    }
    for char in s1 {
        s1Chars.append(char)
    }
    s0Chars.sort()
    s1Chars.sort()
    return s0Chars == s1Chars
}
```swift
// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
    var s0Chars = [Character]()
    var s1Chars = [Character]()
    for char in s0 {
        s0Chars.append(char)
    }
    for char in s1 {
        s1Chars.append(char)
    }
    s0Chars.sort()
    s1Chars.sort()
    return s0Chars == s1Chars
}
<|file_separator|>
 // XCTAssertTrue failed

func sameChars(s0: String, s1: String) -> Bool {
  var s0 = s0.lowercased()
  var s1 = s1.lowercased()
  var s0Chars = Array(s0)
  var s1Chars = Array(s1)
  var s0CharsCount = [String: Int]()
  var s1CharsCount = [String: Int]()
  for char in s0Chars {
    if s0CharsCount[String(char)] == nil {
      s0CharsCount[String(char)] = 1
    } else {
      s0CharsCount[String(char)] = s0CharsCount[String(char)]! + 1
    }
  }
  for char in s1Chars {
    if s1CharsCount[String(char)] == nil {
      s1CharsCount[String(char)] = 1
    } else {
      s1CharsCount[String(char)] = s1CharsCount[String(char)]! + 1
    }
  }
  for char in s0Chars {
    if s1CharsCount[String(char)] == nil {
      return false
    } else {
      if s1CharsCount[String(char)]! != s0CharsCount[String(char)]! {
        return false
      }
    }
  }
  return true
}
```swift
// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
  var s0 = s0.lowercased()
  var s1 = s1.lowercased()
  var s0Chars = Array(s0)
  var s1Chars = Array(s1)
  var s0CharsCount = [String: Int]()
  var s1CharsCount = [String: Int]()
  for char in s0Chars {
    if s0CharsCount[String(char)] == nil {
      s0CharsCount[String(char)] = 1
    } else {
      s0CharsCount[String(char)] = s0CharsCount[String(char)]! + 1
    }
  }
  for char in s1Chars {
    if s1CharsCount[String(char)] == nil {
      s1CharsCount[String(char)] = 1
    } else {
      s1CharsCount[String(char)] = s1CharsCount[String(char)]! + 1
    }
  }
  for char in s0Chars {
    if s1CharsCount[String(char)] == nil {
      return false
    } else {
      if s1CharsCount[String(char)]! != s0CharsCount[String(char)]! {
        return false
      }
    }
  }
  return true
}
<|file_separator|>
var s0 = s0.lowercased() // variable 's0' was never mutated; consider changing to 'let' constant
var s1 = s1.lowercased() // variable 's1' was never mutated; consider changing to 'let' constant
var s0Chars = Array(s0) // variable 's0Chars' was never mutated; consider changing to 'let' constant
var s1Chars = Array(s1) // variable 's1Chars' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func sameChars(s0: String, s1: String) -> Bool {
    var s0 = s0.lowercased()
    var s1 = s1.lowercased()
    var s0Chars = [Character]()
    var s1Chars = [Character]()
    
    for char in s0 {
        s0Chars.append(char)
    }
    
    for char in s1 {
        s1Chars.append(char)
    }
    
    s0Chars.sort()
    s1Chars.sort()
    
    for i in 0..<s0Chars.count {
        if s0Chars[i] != s1Chars[i] {
            return false
        }
    }
    
    return true
}
```swift
// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
    var s0 = s0.lowercased()
    var s1 = s1.lowercased()
    var s0Chars = [Character]()
    var s1Chars = [Character]()
    
    for char in s0 {
        s0Chars.append(char)
    }
    
    for char in s1 {
        s1Chars.append(char)
    }
    
    s0Chars.sort()
    s1Chars.sort()
    
    for i in 0..<s0Chars.count {
        if s0Chars[i] != s1Chars[i] {
            return false
        }
    }
    
    return true
}
<|file_separator|>
var s0 = s0.lowercased() // variable 's0' was never mutated; consider changing to 'let' constant
var s1 = s1.lowercased() // variable 's1' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func sameChars(s0: String, s1: String) -> Bool {
    var s0 = s0.lowercased()
    var s1 = s1.lowercased()
    var s0Chars = [Character]()
    var s1Chars = [Character]()
    for char in s0 {
        s0Chars.append(char)
    }
    for char in s1 {
        s1Chars.append(char)
    }
    s0Chars.sort()
    s1Chars.sort()
    for i in 0..<s0Chars.count {
        if s0Chars[i] != s1Chars[i] {
            return false
        }
    }
    return true
}
```swift
// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
    var s0 = s0.lowercased()
    var s1 = s1.lowercased()
    var s0Chars = [Character]()
    var s1Chars = [Character]()
    for char in s0 {
        s0Chars.append(char)
    }
    for char in s1 {
        s1Chars.append(char)
    }
    s0Chars.sort()
    s1Chars.sort()
    for i in 0..<s0Chars.count {
        if s0Chars[i] != s1Chars[i] {
            return false
        }
    }
    return true
}
<|file_separator|>
var s0 = s0.lowercased() // variable 's0' was never mutated; consider changing to 'let' constant
var s1 = s1.lowercased() // variable 's1' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func sameChars(s0: String, s1: String) -> Bool {
  var chars = [Character]()
  for char in s0 {
    if chars.contains(char) {
      return false
    }
    chars.append(char)
  }
  for char in s1 {
    if chars.contains(char) {
      return false
    }
  }
  return true
}
```swift
// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
  var chars = [Character]()
  for char in s0 {
    if chars.contains(char) {
      return false
    }
    chars.append(char)
  }
  for char in s1 {
    if chars.contains(char) {
      return false
    }
  }
  return true
}

// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
  var chars = [Character]()
  for char in s0 {
    if chars.contains(char) {
      return false
    }
    chars.append(char)
  }
  for char in s1 {
    if chars.contains(char) {
      return false
    }
  }
  return true
}

// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
  var chars = [Character]()
  for char in s0 {
    if chars.contains(char) {
      return false
    }
    chars.append(char)
  }
  for char in s1 {
    if chars.contains(char) {
      return false
    }
  }
  return true
}

// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
  var chars = [Character]()
  for char in s0 {
    if chars.contains(char) {
      return false
    }
    chars.append(char)
  }
  for char in s1 {
    if chars.contains(char) {
      return false
    }
  }
  return true
}

// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
  var chars = [Character]()
  for char in s0 {
    if chars.contains(char) {
      return false
    }
    chars.append(char)
  }
 // XCTAssertTrue failed

func sameChars(s0: String, s1: String) -> Bool {
  var s0Chars = [Character]()
  var s1Chars = [Character]()
  for char in s0 {
    s0Chars.append(char)
  }
  for char in s1 {
    s1Chars.append(char)
  }
  s0Chars.sort()
  s1Chars.sort()
  for i in 0..<s0Chars.count {
    if s0Chars[i] != s1Chars[i] {
      return false
    }
  }
  return true
}
```swift
// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
  var s0Chars = [Character]()
  var s1Chars = [Character]()
  for char in s0 {
    s0Chars.append(char)
  }
  for char in s1 {
    s1Chars.append(char)
  }
  s0Chars.sort()
  s1Chars.sort()
  for i in 0..<s0Chars.count {
    if s0Chars[i] != s1Chars[i] {
      return false
    }
  }
  return true
}

// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
  var s0Chars = [Character]()
  var s1Chars = [Character]()
  for char in s0 {
    s0Chars.append(char)
  }
  for char in s1 {
    s1Chars.append(char)
  }
  s0Chars.sort()
  s1Chars.sort()
  for i in 0..<s0Chars.count {
    if s0Chars[i] != s1Chars[i] {
      return false
    }
  }
  return true
}

// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
  var s0Chars = [Character]()
  var s1Chars = [Character]()
  for char in s0 {
    s0Chars.append(char)
  }
  for char in s1 {
    s1Chars.append(char)
  }
  s0Chars.sort()
  s1Chars.sort()
  for i in 0..<s0Chars.count {
    if s0Chars[i] != s1Chars[i] {
      return false
    }
  }
  return true
}

// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
  var s0Chars = [Character]()
  var s1Chars = [Character]()
  for char in s0 {
    s0Chars.append(char)
  }
  for char in s1 {
    s1Chars.append(char)
  }
  s0Chars.sort()
  s1Chars.sort()
  for i in 0..<s0Chars.count {
    if s0Chars[i] != s1Chars[i] {
      return false
    }
  }
  return true
}

// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz
 // XCTAssertTrue failed

func sameChars(s0: String, s1: String) -> Bool {
    var s0 = s0
    var s1 = s1
    var s0Chars = Array(s0)
    var s1Chars = Array(s1)
    var s0CharsCount = s0Chars.count
    var s1CharsCount = s1Chars.count
    if s0CharsCount != s1CharsCount {
        return false
    }
    for i in 0..<s0CharsCount {
        if s0Chars[i] == s1Chars[i] {
            s0Chars.remove(at: i)
            s1Chars.remove(at: i)
        } else {
            return false
        }
    }
    return true
}
```swift
// Check if two words have the same characters.
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddeddabc") == true
// sameChars(s0: "abcd", s1: "dddddddabc") == true
// sameChars(s0: "dddddddabc", s1: "abcd") == true
// sameChars(s0: "eabcd", s1: "dddddddabc") == false
// sameChars(s0: "abcd", s1: "dddddddabce") == false
// sameChars(s0: "eabcdzzzz", s1: "dddzzzzzzzddddabc") == false
func sameChars(s0: String, s1: String) -> Bool {
    var s0 = s0
    var s1 = s1
    var s0Chars = Array(s0)
    var s1Chars = Array(s1)
    var s0CharsCount = s0Chars.count
    var s1CharsCount = s1Chars.count
    if s0CharsCount != s1CharsCount {
        return false
    }
    for i in 0..<s0CharsCount {
        if s0Chars[i] == s1Chars[i] {
            s0Chars.remove(at: i)
            s1Chars.remove(at: i)
        } else {
            return false
        }
    }
    return true
}

// Check if a string is a palindrome.
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abc") == false
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abcba") == true
// isPalindrome(s: "abc
var s0 = s0 // variable 's0' was never mutated; consider changing to 'let' constant
var s1 = s1 // variable 's1' was never mutated; consider changing to 'let' constant
var s0CharsCount = s0Chars.count // variable 's0CharsCount' was never mutated; consider changing to 'let' constant
var s1CharsCount = s1Chars.count // variable 's1CharsCount' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func fib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}
```swift
// Return n-th Fibonacci number.
// fib(n: 10) == 55
// fib(n: 1) == 1
// fib(n: 8) == 21
func fib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}
<|file_separator|>

func fib(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    if n == 2 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}
```swift
// Return n-th Fibonacci number.
// fib(n: 10) == 55
// fib(n: 1) == 1
// fib(n: 8) == 21
func fib(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    if n == 2 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}

// Return n-th Fibonacci number.
// fib(n: 10) == 55
// fib(n: 1) == 1
// fib(n: 8) == 21
func fib(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    if n == 2 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}

// Return n-th Fibonacci number.
// fib(n: 10) == 55
// fib(n: 1) == 1
// fib(n: 8) == 21
func fib(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    if n == 2 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}

// Return n-th Fibonacci number.
// fib(n: 10) == 55
// fib(n: 1) == 1
// fib(n: 8) == 21
func fib(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    if n == 2 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}

// Return n-th Fibonacci number.
// fib(n: 10) == 55
// fib(n: 1) == 1
// fib(n: 8) == 21
func fib(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    if n == 2 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}

// Return n-th Fibonacci number.
// fib(n: 10) == 55
// fib(n: 1) == 1
// fib(n: 8) == 21
func fib(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    if n == 2 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}

// Return n-th Fibonacci number.
// fib(n: 10) == 55
// fib(n: 1) == 1
// fib(n: 8) == 21
func fib(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    if n == 2 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}

// Return n-th Fibonacci number.
// fib(n: 10) == 55
// fib(n: 1) == 1
// fib(n: 8) == 21
func fib(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    if n == 2 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}

// Return n-th Fibonacci number.
// fib(n: 10) == 55
// fib(n: 1) == 1
// fib(n: 8) == 21
func fib(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    if n == 2 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}

// Return n-th Fibonacci number.
// fib(n: 10) == 55
// fib(n: 1) == 1
// fib(n: 8) == 21

func fib(n: Int) -> Int {
  if n == 1 {
    return 1
  }
  if n == 2 {
    return 1
  }
  return fib(n: n - 1) + fib(n: n - 2)
}

func tri(n: Int) -> Int {
  if n == 1 {
    return 1
  }
  return n + tri(n: n - 1)
}
```swift
// Return n-th Fibonacci number.
// fib(n: 10) == 55
// fib(n: 1) == 1
// fib(n: 8) == 21
func fib(n: Int) -> Int {
  if n == 1 {
    return 1
  }
  if n == 2 {
    return 1
  }
  return fib(n: n - 1) + fib(n: n - 2)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
  if n == 1 {
    return 1
  }
  return n + tri(n: n - 1)
}

// Return n-th triangular number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
  if n == 1 {
    return 1
  }
  return n + tri(n: n - 1)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
  if n == 1 {
    return 1
  }
  return n + tri(n: n - 1)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
  if n == 1 {
    return 1
  }
  return n + tri(n: n - 1)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
  if n == 1 {
    return 1
  }
  return n + tri(n: n - 1)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
  if n == 1 {
    return 1
  }
  return n + tri(n: n - 1)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
  if n == 1 {
    return 1
  }
  return n + tri(n: n - 1)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
  if n == 1 {
    return 1
  }
  return n + tri(n: n - 1)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
  if n == 1 {
    return 1
  }
  return n + tri(n: n - 1)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
  if n == 1 {
    return 1
  }
  return n + tri(n: n - 1)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int

func fib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}
```swift
// Return n-th Fibonacci number.
// fib(n: 10) == 55
// fib(n: 1) == 1
// fib(n: 8) == 21
func fib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}
<|file_separator|>

func fib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}
```swift
// Return n-th Fibonacci number.
// fib(n: 10) == 55
// fib(n: 1) == 1
// fib(n: 8) == 21
func fib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}
<|file_separator|>

func fib(n: Int) -> Int {
    var a = 1
    var b = 1
    for _ in 2..<n {
        let tmp = a
        a = b
        b = tmp + b
    }
    return b
}
```swift
// Return n-th Fibonacci number.
// fib(n: 10) == 55
// fib(n: 1) == 1
// fib(n: 8) == 21
func fib(n: Int) -> Int {
    var a = 1
    var b = 1
    for _ in 2..<n {
        let tmp = a
        a = b
        b = tmp + b
    }
    return b
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func fib(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    if n == 2 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}
```swift
// Return n-th Fibonacci number.
// fib(n: 10) == 55
// fib(n: 1) == 1
// fib(n: 8) == 21
func fib(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    if n == 2 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}
<|file_separator|>

func fib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 1
    }
    var a = 0
    var b = 1
    var c = 0
    for _ in 2...n {
        c = a + b
        a = b
        b = c
    }
    return c
}
```swift
// Return n-th Fibonacci number.
// fib(n: 10) == 55
// fib(n: 1) == 1
// fib(n: 8) == 21
func fib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 1
    }
    var a = 0
    var b = 1
    var c = 0
    for _ in 2...n {
        c = a + b
        a = b
        b = c
    }
    return c
}
<|file_separator|>

func fib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}
```swift
// Return n-th Fibonacci number.
// fib(n: 10) == 55
// fib(n: 1) == 1
// fib(n: 8) == 21
func fib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}
<|file_separator|>

func fib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}

func tri(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    return n + tri(n: n - 1)
}
```swift
// Return n-th Fibonacci number.
// fib(n: 10) == 55
// fib(n: 1) == 1
// fib(n: 8) == 21
func fib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 1
    }
    return fib(n: n - 1) + fib(n: n - 2)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    return n + tri(n: n - 1)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    return n + tri(n: n - 1)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    return n + tri(n: n - 1)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    return n + tri(n: n - 1)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    return n + tri(n: n - 1)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    return n + tri(n: n - 1)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    return n + tri(n: n - 1)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    return n + tri(n: n - 1)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    return n + tri(n: n - 1)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    return n + tri(n: n - 1)
}

// Return n-th triangle number.
// tri(n: 10) == 55
// tri(n: 1) == 1
// tri(n: 8) == 21
func tri(n: Int) -> Int

func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "<" {
            stack.append(bracket)
        } else {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// brackets is a string of "<" and ">".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "<") == false
// correctBracketing(brackets: "<>") == true
// correctBracketing(brackets: "<<><>>") == true
// correctBracketing(brackets: "><<>") == false
func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "<" {
            stack.append(bracket)
        } else {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
<|file_separator|>

func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "<" {
            stack.append(bracket)
        } else if bracket == ">" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// brackets is a string of "<" and ">".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "<") == false
// correctBracketing(brackets: "<>") == true
// correctBracketing(brackets: "<<><>>") == true
// correctBracketing(brackets: "><<>") == false
func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "<" {
            stack.append(bracket)
        } else if bracket == ">" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
<|file_separator|>

func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == ">" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        } else {
            stack.append(bracket)
        }
    }
    return stack.isEmpty
}
```swift
// brackets is a string of "<" and ">".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "<") == false
// correctBracketing(brackets: "<>") == true
// correctBracketing(brackets: "<<><>>") == true
// correctBracketing(brackets: "><<>") == false
func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == ">" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        } else {
            stack.append(bracket)
        }
    }
    return stack.isEmpty
}
<|file_separator|>

func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "<" {
            stack.append(bracket)
        } else if bracket == ">" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// brackets is a string of "<" and ">".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "<") == false
// correctBracketing(brackets: "<>") == true
// correctBracketing(brackets: "<<><>>") == true
// correctBracketing(brackets: "><<>") == false
func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "<" {
            stack.append(bracket)
        } else if bracket == ">" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
<|file_separator|>

func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "<" {
            stack.append(bracket)
        } else {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// brackets is a string of "<" and ">".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "<") == false
// correctBracketing(brackets: "<>") == true
// correctBracketing(brackets: "<<><>>") == true
// correctBracketing(brackets: "><<>") == false
func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "<" {
            stack.append(bracket)
        } else {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
<|file_separator|>

func correctBracketing(brackets: String) -> Bool {
  var stack = [Character]()
  for bracket in brackets {
    if bracket == "<" {
      stack.append(bracket)
    } else if bracket == ">" {
      if stack.isEmpty {
        return false
      }
      stack.removeLast()
    }
  }
  return stack.isEmpty
}
```swift
// brackets is a string of "<" and ">".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "<") == false
// correctBracketing(brackets: "<>") == true
// correctBracketing(brackets: "<<><>>") == true
// correctBracketing(brackets: "><<>") == false
func correctBracketing(brackets: String) -> Bool {
  var stack = [Character]()
  for bracket in brackets {
    if bracket == "<" {
      stack.append(bracket)
    } else if bracket == ">" {
      if stack.isEmpty {
        return false
      }
      stack.removeLast()
    }
  }
  return stack.isEmpty
}
<|file_separator|>

func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "<" {
            stack.append(bracket)
        } else {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// brackets is a string of "<" and ">".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "<") == false
// correctBracketing(brackets: "<>") == true
// correctBracketing(brackets: "<<><>>") == true
// correctBracketing(brackets: "><<>") == false
func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "<" {
            stack.append(bracket)
        } else {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
<|file_separator|>

func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "<" {
            stack.append(bracket)
        } else if bracket == ">" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// brackets is a string of "<" and ">".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "<") == false
// correctBracketing(brackets: "<>") == true
// correctBracketing(brackets: "<<><>>") == true
// correctBracketing(brackets: "><<>") == false
func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "<" {
            stack.append(bracket)
        } else if bracket == ">" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
<|file_separator|>

func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "<" {
            stack.append(bracket)
        } else if bracket == ">" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// brackets is a string of "<" and ">".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "<") == false
// correctBracketing(brackets: "<>") == true
// correctBracketing(brackets: "<<><>>") == true
// correctBracketing(brackets: "><<>") == false
func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "<" {
            stack.append(bracket)
        } else if bracket == ">" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
<|file_separator|>

func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "<" {
            stack.append(bracket)
        } else {
            if stack.count == 0 {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.count == 0
}
```swift
// brackets is a string of "<" and ">".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "<") == false
// correctBracketing(brackets: "<>") == true
// correctBracketing(brackets: "<<><>>") == true
// correctBracketing(brackets: "><<>") == false
func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "<" {
            stack.append(bracket)
        } else {
            if stack.count == 0 {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.count == 0
}
<|file_separator|>

func monotonic(l: [Int]) -> Bool {
    var isIncreasing = true
    var isDecreasing = true
    for i in 1..<l.count {
        if l[i] < l[i - 1] {
            isDecreasing = false
        }
        if l[i] > l[i - 1] {
            isIncreasing = false
        }
    }
    return isIncreasing || isDecreasing
}
```swift
// Return true is array elements are monotonically increasing or decreasing.
// monotonic(l: [1, 2, 4, 20]) == true
// monotonic(l: [1, 20, 4, 10]) == false
// monotonic(l: [4, 1, 0, -10]) == true
func monotonic(l: [Int]) -> Bool {
    var isIncreasing = true
    var isDecreasing = true
    for i in 1..<l.count {
        if l[i] < l[i - 1] {
            isDecreasing = false
        }
        if l[i] > l[i - 1] {
            isIncreasing = false
        }
    }
    return isIncreasing || isDecreasing
}
<|file_separator|>

func monotonic(l: [Int]) -> Bool {
    var isMonotonic = true
    var isDecreasing = false
    var isIncreasing = false
    
    for i in 1..<l.count {
        if l[i] < l[i - 1] {
            isDecreasing = true
        } else if l[i] > l[i - 1] {
            isIncreasing = true
        }
        
        if isDecreasing && isIncreasing {
            isMonotonic = false
            break
        }
    }
    
    return isMonotonic
}
```swift
// Return true is array elements are monotonically increasing or decreasing.
// monotonic(l: [1, 2, 4, 20]) == true
// monotonic(l: [1, 20, 4, 10]) == false
// monotonic(l: [4, 1, 0, -10]) == true
func monotonic(l: [Int]) -> Bool {
    var isMonotonic = true
    var isDecreasing = false
    var isIncreasing = false
    
    for i in 1..<l.count {
        if l[i] < l[i - 1] {
            isDecreasing = true
        } else if l[i] > l[i - 1] {
            isIncreasing = true
        }
        
        if isDecreasing && isIncreasing {
            isMonotonic = false
            break
        }
    }
    
    return isMonotonic
}
<|file_separator|>

func monotonic(l: [Int]) -> Bool {
    var isIncreasing = true
    var isDecreasing = true
    
    for i in 1..<l.count {
        if l[i] < l[i-1] {
            isDecreasing = false
        }
        if l[i] > l[i-1] {
            isIncreasing = false
        }
    }
    
    return isIncreasing || isDecreasing
}
```swift
// Return true is array elements are monotonically increasing or decreasing.
// monotonic(l: [1, 2, 4, 20]) == true
// monotonic(l: [1, 20, 4, 10]) == false
// monotonic(l: [4, 1, 0, -10]) == true
func monotonic(l: [Int]) -> Bool {
    var isIncreasing = true
    var isDecreasing = true
    
    for i in 1..<l.count {
        if l[i] < l[i-1] {
            isDecreasing = false
        }
        if l[i] > l[i-1] {
            isIncreasing = false
        }
    }
    
    return isIncreasing || isDecreasing
}
<|file_separator|>

func monotonic(l: [Int]) -> Bool {
    var isMonotonic = true
    var isDecreasing = false
    var isIncreasing = false
    
    for i in 1..<l.count {
        if l[i] < l[i-1] {
            isDecreasing = true
        } else if l[i] > l[i-1] {
            isIncreasing = true
        }
        
        if isDecreasing && isIncreasing {
            isMonotonic = false
            break
        }
    }
    
    return isMonotonic
}
```swift
// Return true is array elements are monotonically increasing or decreasing.
// monotonic(l: [1, 2, 4, 20]) == true
// monotonic(l: [1, 20, 4, 10]) == false
// monotonic(l: [4, 1, 0, -10]) == true
func monotonic(l: [Int]) -> Bool {
    var isMonotonic = true
    var isDecreasing = false
    var isIncreasing = false
    
    for i in 1..<l.count {
        if l[i] < l[i-1] {
            isDecreasing = true
        } else if l[i] > l[i-1] {
            isIncreasing = true
        }
        
        if isDecreasing && isIncreasing {
            isMonotonic = false
            break
        }
    }
    
    return isMonotonic
}
<|file_separator|>

func monotonic(l: [Int]) -> Bool {
    var isMonotonic = true
    var isDecreasing = false
    for i in 0..<l.count-1 {
        if l[i] < l[i+1] {
            isDecreasing = true
        } else if l[i] > l[i+1] {
            isDecreasing = false
            break
        }
    }
    if isDecreasing {
        isMonotonic = false
    }
    return isMonotonic
}
```swift
// Return true is array elements are monotonically increasing or decreasing.
// monotonic(l: [1, 2, 4, 20]) == true
// monotonic(l: [1, 20, 4, 10]) == false
// monotonic(l: [4, 1, 0, -10]) == true
func monotonic(l: [Int]) -> Bool {
    var isMonotonic = true
    var isDecreasing = false
    for i in 0..<l.count-1 {
        if l[i] < l[i+1] {
            isDecreasing = true
        } else if l[i] > l[i+1] {
            isDecreasing = false
            break
        }
    }
    if isDecreasing {
        isMonotonic = false
    }
    return isMonotonic
}
<|file_separator|>
 // XCTAssertTrue failed

func monotonic(l: [Int]) -> Bool {
    var isMonotonic = true
    var isDecreasing = false
    var isIncreasing = false
    
    for i in 1..<l.count {
        if l[i] > l[i - 1] {
            isIncreasing = true
        } else if l[i] < l[i - 1] {
            isDecreasing = true
        } else {
            isMonotonic = false
            break
        }
    }
    
    return isMonotonic && (isDecreasing || isIncreasing)
}
```swift
// Return true is array elements are monotonically increasing or decreasing.
// monotonic(l: [1, 2, 4, 20]) == true
// monotonic(l: [1, 20, 4, 10]) == false
// monotonic(l: [4, 1, 0, -10]) == true
func monotonic(l: [Int]) -> Bool {
    var isMonotonic = true
    var isDecreasing = false
    var isIncreasing = false
    
    for i in 1..<l.count {
        if l[i] > l[i - 1] {
            isIncreasing = true
        } else if l[i] < l[i - 1] {
            isDecreasing = true
        } else {
            isMonotonic = false
            break
        }
    }
    
    return isMonotonic && (isDecreasing || isIncreasing)
}
<|file_separator|>
 // XCTAssertTrue failed

func monotonic(l: [Int]) -> Bool {
    var isMonotonic = true
    var isDecreasing = false
    var isIncreasing = false
    
    for i in 1..<l.count {
        if l[i] > l[i-1] {
            isDecreasing = true
        } else if l[i] < l[i-1] {
            isIncreasing = true
        } else {
            isMonotonic = false
            break
        }
    }
    
    if isDecreasing && isIncreasing {
        isMonotonic = false
    }
    
    return isMonotonic
}
```swift
// Return true is array elements are monotonically increasing or decreasing.
// monotonic(l: [1, 2, 4, 20]) == true
// monotonic(l: [1, 20, 4, 10]) == false
// monotonic(l: [4, 1, 0, -10]) == true
func monotonic(l: [Int]) -> Bool {
    var isMonotonic = true
    var isDecreasing = false
    var isIncreasing = false
    
    for i in 1..<l.count {
        if l[i] > l[i-1] {
            isDecreasing = true
        } else if l[i] < l[i-1] {
            isIncreasing = true
        } else {
            isMonotonic = false
            break
        }
    }
    
    if isDecreasing && isIncreasing {
        isMonotonic = false
    }
    
    return isMonotonic
}
<|file_separator|>
 // XCTAssertTrue failed

func monotonic(l: [Int]) -> Bool {
    var isMonotonic = true
    var prev = l[0]
    for i in 1..<l.count {
        if l[i] < prev {
            isMonotonic = false
            break
        }
        prev = l[i]
    }
    if isMonotonic {
        return true
    }
    isMonotonic = true
    prev = l[0]
    for i in 1..<l.count {
        if l[i] > prev {
            isMonotonic = false
            break
        }
        prev = l[i]
    }
    return isMonotonic
}
```swift
// Return true is array elements are monotonically increasing or decreasing.
// monotonic(l: [1, 2, 4, 20]) == true
// monotonic(l: [1, 20, 4, 10]) == false
// monotonic(l: [4, 1, 0, -10]) == true
func monotonic(l: [Int]) -> Bool {
    var isMonotonic = true
    var prev = l[0]
    for i in 1..<l.count {
        if l[i] < prev {
            isMonotonic = false
            break
        }
        prev = l[i]
    }
    if isMonotonic {
        return true
    }
    isMonotonic = true
    prev = l[0]
    for i in 1..<l.count {
        if l[i] > prev {
            isMonotonic = false
            break
        }
        prev = l[i]
    }
    return isMonotonic
}
<|file_separator|>

func monotonic(l: [Int]) -> Bool {
    var isIncreasing = true
    var isDecreasing = true
    for i in 1..<l.count {
        if l[i] < l[i - 1] {
            isDecreasing = false
        }
        if l[i] > l[i - 1] {
            isIncreasing = false
        }
    }
    return isIncreasing || isDecreasing
}

func pairZero(l: [Int]) -> Bool {
    var set = Set<Int>()
    for i in l {
        if set.contains(0 - i) {
            return true
        }
        set.insert(i)
    }
    return false
}
```swift
// Return true is array elements are monotonically increasing or decreasing.
// monotonic(l: [1, 2, 4, 20]) == true
// monotonic(l: [1, 20, 4, 10]) == false
// monotonic(l: [4, 1, 0, -10]) == true
func monotonic(l: [Int]) -> Bool {
    var isIncreasing = true
    var isDecreasing = true
    for i in 1..<l.count {
        if l[i] < l[i - 1] {
            isDecreasing = false
        }
        if l[i] > l[i - 1] {
            isIncreasing = false
        }
    }
    return isIncreasing || isDecreasing
}

// Return true if the array contains a pair of elements that sum to zero.
// pairZero(l: [1, 2, 3, -2, -1]) == true
// pairZero(l: [1, 2, 3, -2, -1, 10]) == false
func pairZero(l: [Int]) -> Bool {
    var set = Set<Int>()
    for i in l {
        if set.contains(0 - i) {
            return true
        }
        set.insert(i)
    }
    return false
}

// Return true if the array contains a pair of elements that sum to zero.
// pairZero(l: [1, 2, 3, -2, -1]) == true
// pairZero(l: [1, 2, 3, -2, -1, 10]) == false
func pairZero(l: [Int]) -> Bool {
    var set = Set<Int>()
    for i in l {
        if set.contains(0 - i) {
            return true
        }
        set.insert(i)
    }
    return false
}

// Return true if the array contains a pair of elements that sum to zero.
// pairZero(l: [1, 2, 3, -2, -1]) == true
// pairZero(l: [1, 2, 3, -2, -1, 10]) == false
func pairZero(l: [Int]) -> Bool {
    var set = Set<Int>()
    for i in l {
        if set.contains(0 - i) {
            return true
        }
        set.insert(i)
    }
    return false
}

// Return true if the array contains a pair of elements that sum to zero.
// pairZero(l: [1, 2, 3, -2, -1]) == true
// pairZero(l: [1, 2, 3, -2, -1, 10]) == false
func pairZero(l: [Int]) -> Bool {
    var set = Set<Int>()
    for i in l {
        if set.contains(0 - i) {
            return true
        }
        set.insert(i)
    }
    return false
}

// Return true if the array contains a pair of elements that sum to zero.
// pairZero(l: [1, 2, 3, -2, -1]) == true
// pairZero(l: [1, 2, 3, -2, -1, 10]) == false
func pairZero(l: [Int]) -> Bool {
    var set = Set<Int>()
    for i in l {
        if set.contains(0 - i) {
            return true
        }
        set.insert(i)
    }
    return false
}

// Return true if the array contains a pair of elements that sum to zero.
// pairZero(l: [1, 2, 3, -2, -1]) == true
// pairZero(l: [1, 2, 3, -2, -1, 10]) == false
func pairZero(l: [Int]) -> Bool {
    var set = Set<Int>()
    for i in l {
        if set.contains(0 - i) {
            return true
        }
        set.insert(i)
    }
    return false
}

// Return true if the array contains a pair of elements that sum to zero.
// pairZero(l: [1, 2, 3, -2, -1]) == true
// pairZero(l: [1, 2, 3, -2, -1, 10]) == false
func pairZero(l: [Int]) -> Bool {
    var set = Set<Int>()
    for i in l {
        if set.contains(0 - i) {
            return true
        }
        set.insert(i)
    }

func monotonic(l: [Int]) -> Bool {
    var isMonotonic = true
    for i in 0..<l.count-1 {
        if l[i] > l[i+1] {
            isMonotonic = false
            break
        }
    }
    if isMonotonic {
        return true
    }
    for i in 0..<l.count-1 {
        if l[i] < l[i+1] {
            isMonotonic = false
            break
        }
    }
    return isMonotonic
}
```swift
// Return true is array elements are monotonically increasing or decreasing.
// monotonic(l: [1, 2, 4, 20]) == true
// monotonic(l: [1, 20, 4, 10]) == false
// monotonic(l: [4, 1, 0, -10]) == true
func monotonic(l: [Int]) -> Bool {
    var isMonotonic = true
    for i in 0..<l.count-1 {
        if l[i] > l[i+1] {
            isMonotonic = false
            break
        }
    }
    if isMonotonic {
        return true
    }
    for i in 0..<l.count-1 {
        if l[i] < l[i+1] {
            isMonotonic = false
            break
        }
    }
    return isMonotonic
}
<|file_separator|>
 // XCTAssertTrue failed

func common(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    for i in l1 {
        if l2.contains(i) {
            if !result.contains(i) {
                result.append(i)
            }
        }
    }
    return result
}
```swift
// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    for i in l1 {
        if l2.contains(i) {
            if !result.contains(i) {
                result.append(i)
            }
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func common(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}

func common2(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}

func common3(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}
```swift
// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}

// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common2(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}

// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common3(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}

// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common4(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
 // XCTAssertTrue failed

func common(l1: [Int], l2: [Int]) -> [Int] {
  var l1 = l1
  var l2 = l2
  var result = [Int]()
  
  while l1.count > 0 && l2.count > 0 {
    if l1[0] == l2[0] {
      result.append(l1[0])
      l1.remove(at: 0)
      l2.remove(at: 0)
    } else if l1[0] < l2[0] {
      l1.remove(at: 0)
    } else {
      l2.remove(at: 0)
    }
  }
  
  return result
}
```swift
// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common(l1: [Int], l2: [Int]) -> [Int] {
  var l1 = l1
  var l2 = l2
  var result = [Int]()
  
  while l1.count > 0 && l2.count > 0 {
    if l1[0] == l2[0] {
      result.append(l1[0])
      l1.remove(at: 0)
      l2.remove(at: 0)
    } else if l1[0] < l2[0] {
      l1.remove(at: 0)
    } else {
      l2.remove(at: 0)
    }
  }
  
  return result
}
<|file_separator|>
 // XCTAssertTrue failed

func common(l1: [Int], l2: [Int]) -> [Int] {
  var l1 = l1
  var l2 = l2
  var result = [Int]()
  
  while l1.count > 0 && l2.count > 0 {
    if l1[0] == l2[0] {
      result.append(l1[0])
      l1.remove(at: 0)
      l2.remove(at: 0)
    } else if l1[0] < l2[0] {
      l1.remove(at: 0)
    } else {
      l2.remove(at: 0)
    }
  }
  
  return result
}
```swift
// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common(l1: [Int], l2: [Int]) -> [Int] {
  var l1 = l1
  var l2 = l2
  var result = [Int]()
  
  while l1.count > 0 && l2.count > 0 {
    if l1[0] == l2[0] {
      result.append(l1[0])
      l1.remove(at: 0)
      l2.remove(at: 0)
    } else if l1[0] < l2[0] {
      l1.remove(at: 0)
    } else {
      l2.remove(at: 0)
    }
  }
  
  return result
}
<|file_separator|>
 // XCTAssertTrue failed

func common(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}
```swift
// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func common(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}
```swift
// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func common(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}

func common2(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}

func common3(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}
```swift
// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}

// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common2(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}

// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common3(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}

// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common4(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
 // XCTAssertTrue failed

func common(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}

func common2(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}

func common3(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}
```swift
// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}

// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common2(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}

// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common3(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
        }
    }
    
    return result
}

// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common4(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while l1.count > 0 && l2.count > 0 {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.remove(at: 0)
            l2.remove(at: 0)
        } else if l1[0] < l2[0] {
            l1.remove(at: 0)
        } else {
            l2.remove(at: 0)
 // XCTAssertTrue failed

func common(l1: [Int], l2: [Int]) -> [Int] {
  var result = [Int]()
  var l1 = l1
  var l2 = l2
  while l1.count > 0 && l2.count > 0 {
    if l1[0] == l2[0] {
      result.append(l1[0])
      l1.remove(at: 0)
      l2.remove(at: 0)
    } else if l1[0] < l2[0] {
      l1.remove(at: 0)
    } else {
      l2.remove(at: 0)
    }
  }
  return result
}
```swift
// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common(l1: [Int], l2: [Int]) -> [Int] {
  var result = [Int]()
  var l1 = l1
  var l2 = l2
  while l1.count > 0 && l2.count > 0 {
    if l1[0] == l2[0] {
      result.append(l1[0])
      l1.remove(at: 0)
      l2.remove(at: 0)
    } else if l1[0] < l2[0] {
      l1.remove(at: 0)
    } else {
      l2.remove(at: 0)
    }
  }
  return result
}
<|file_separator|>
 // XCTAssertTrue failed

func common(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while !l1.isEmpty && !l2.isEmpty {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.removeFirst()
            l2.removeFirst()
        } else if l1[0] < l2[0] {
            l1.removeFirst()
        } else {
            l2.removeFirst()
        }
    }
    
    return result
}

func common2(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while !l1.isEmpty && !l2.isEmpty {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.removeFirst()
            l2.removeFirst()
        } else if l1[0] < l2[0] {
            l1.removeFirst()
        } else {
            l2.removeFirst()
        }
    }
    
    return result
}

func common3(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while !l1.isEmpty && !l2.isEmpty {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.removeFirst()
            l2.removeFirst()
        } else if l1[0] < l2[0] {
            l1.removeFirst()
        } else {
            l2.removeFirst()
        }
    }
    
    return result
}

func common4(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while !l1.isEmpty && !l2.isEmpty {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.removeFirst()
            l2.removeFirst()
        } else if l1[0] < l2[0] {
            l1.removeFirst()
        } else {
            l2.removeFirst()
        }
    }
    
    return result
}
```swift
// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while !l1.isEmpty && !l2.isEmpty {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.removeFirst()
            l2.removeFirst()
        } else if l1[0] < l2[0] {
            l1.removeFirst()
        } else {
            l2.removeFirst()
        }
    }
    
    return result
}

// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common2(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while !l1.isEmpty && !l2.isEmpty {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.removeFirst()
            l2.removeFirst()
        } else if l1[0] < l2[0] {
            l1.removeFirst()
        } else {
            l2.removeFirst()
        }
    }
    
    return result
}

// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common3(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while !l1.isEmpty && !l2.isEmpty {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.removeFirst()
            l2.removeFirst()
        } else if l1[0] < l2[0] {
            l1.removeFirst()
        } else {
            l2.removeFirst()
        }
    }
    
    return result
}

// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]) == [1, 5, 653]
// common(l1: [5, 3, 2, 8], l2: [3, 2]) == [2, 3]
func common4(l1: [Int], l2: [Int]) -> [Int] {
    var result = [Int]()
    var l1 = l1
    var l2 = l2
    
    while !l1.isEmpty && !l2.isEmpty {
        if l1[0] == l2[0] {
            result.append(l1[0])
            l1.removeFirst()
            l2.removeFirst()
        } else if l1[0] < l2[0] {
            l1.removeFirst()
        } else {
            l2.removeFirst()
        }
    }
    
    return result
}

// Return sorted unique common elements for two arrays.
// common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 1
 // XCTAssertTrue failed

func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  var i = 2
  while i < n {
    if n % i == 0 {
      n /= i
      largest = i
    }
    i += 1
  }
  return largest
}

func sumOfMultiples(n: Int) -> Int {
  var sum = 0
  for i in 1..<n {
    if i % 3 == 0 || i % 5 == 0 {
      sum += i
    }
  }
  return sum
}

func countPrimes(n: Int) -> Int {
  var count = 0
  for i in 2..<n {
    if isPrime(i) {
      count += 1
    }
  }
  return count
}

func isPrime(n: Int) -> Bool {
  var i = 2
  while i < n {
    if n % i == 0 {
      return false
    }
    i += 1
  }
  return true
}

func sumEvenFibonacci(n: Int) -> Int {
  var sum = 0
  var a = 1
  var b = 2
  while b < n {
    if b % 2 == 0 {
      sum += b
    }
    let temp = a
    a = b
    b = temp + a
  }
  return sum
}

func countEvenFibonacci(n: Int) -> Int {
  var count = 0
  var a = 1
  var b = 2
  while b < n {
    if b % 2 == 0 {
      count += 1
    }
    let temp = a
    a = b
    b = temp + a
  }
  return count
}

func largestPalindrome(n: Int) -> Int {
  var largest = 0
  for i in 10**(n-1)..<10**n {
    for j in 10**(n-1)..<10**n {
      let product = i * j
      if isPalindrome(product) && product > largest {
        largest = product
      }
    }
  }
  return largest
}

func isPalindrome(n: Int) -> Bool {
  var n = n
  var reversed = 0
  while n > 0 {
    reversed = reversed * 10 + n % 10
    n /= 10
  }
  return n == reversed
}
```swift
// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  var i = 2
  while i < n {
    if n % i == 0 {
      n /= i
      largest = i
    }
    i += 1
  }
  return largest
}

// Return the sum of all the multiples of 3 or 5 below n.
// sumOfMultiples(n: 10) == 23
// sumOfMultiples(n: 1000) == 233168
func sumOfMultiples(n: Int) -> Int {
  var sum = 0
  for i in 1..<n {
    if i % 3 == 0 || i % 5 == 0 {
      sum += i
    }
  }
  return sum
}

// Return the number of prime numbers below n.
// countPrimes(n: 10) == 4
// countPrimes(n: 1000) == 1229
func countPrimes(n: Int) -> Int {
  var count = 0
  for i in 2..<n {
    if isPrime(i) {
      count += 1
    }
  }
  return count
}

func isPrime(n: Int) -> Bool {
  var i = 2
  while i < n {
    if n % i == 0 {
      return false
    }
    i += 1
  }
  return true
}

// Return the sum of all the even Fibonacci numbers below n.
// sumEvenFibonacci(n: 10) == 10
// sumEvenFibonacci(n: 4000000) == 4613732
func sumEvenFibonacci(n: Int) -> Int {
  var sum = 0
  var a = 1
  var b = 2
  while b < n {
    if b % 2 == 0 {
      sum += b
    }
    let temp = a
    a = b
    b = temp + a
  }
  return sum
}

// Return the number of even Fibonacci numbers below n.
// countEvenFibonacci(n: 10) == 2
// countEvenFibonacci(n: 4000000) == 233
func countEvenFibonacci(n: Int) -> Int {
  var count = 0
  var a = 1
  var b = 2
  while b < n {
    if b % 2 == 0 {
      count += 1
    }
    let temp = a
    a = b
    b = temp + a
  }
  return count
}

// Return the largest palindrome made from the product of two n-digit numbers.
// largestPalindrome(n: 2) == 9009
// largestPalindrome(n: 3) == 906609
func largestPalindrome(n: Int) -> Int {
  var largest = 0
  for i in 10**(n-1)..<10**n {
    for j in 10**(n-1)..<10**n {
      let product = i * j
      if isPalindrome(product) && product > largest {
        largest = product
      }
    }
  }
  return largest
}

func isPalindrome(n: Int) -> Bool {
  var n = n
  var reversed = 0
  while n > 0 {
    reversed = reversed * 10 + n % 10
    n /= 10
  }
  return n == reversed
}

// Return the sum of all the numbers in the array that are divisible by n.
// sumOfDivisible(array: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], n: 2) == 23
// sumOfDivisible(array: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20], n: 3) == 108
func sumOfDivisible(array: [Int], n: Int) -> Int {
  var sum =
if isPrime(i) { // missing argument label 'n:' in call
for i in 10**(n-1)..<10**n { // no operator '**' is defined; did you mean 'pow(_:_:)'?
for i in 10**(n-1)..<10**n { // no operator '**' is defined; did you mean 'pow(_:_:)'?
for j in 10**(n-1)..<10**n { // no operator '**' is defined; did you mean 'pow(_:_:)'?
for j in 10**(n-1)..<10**n { // no operator '**' is defined; did you mean 'pow(_:_:)'?

func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  var i = 2
  while i < n {
    if n % i == 0 {
      n = n / i
      largest = i
    }
    i += 1
  }
  return largest
}

func sumOfMultiples(n: Int) -> Int {
  var sum = 0
  for i in 1..<n {
    if i % 3 == 0 || i % 5 == 0 {
      sum += i
    }
  }
  return sum
}
```swift
// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  var i = 2
  while i < n {
    if n % i == 0 {
      n = n / i
      largest = i
    }
    i += 1
  }
  return largest
}

// Return the sum of all the multiples of 3 or 5 below n.
// sumOfMultiples(n: 10) == 23
// sumOfMultiples(n: 1000) == 233168
func sumOfMultiples(n: Int) -> Int {
  var sum = 0
  for i in 1..<n {
    if i % 3 == 0 || i % 5 == 0 {
      sum += i
    }
  }
  return sum
}

// Return the sum of all the multiples of 3 or 5 below n.
// sumOfMultiples(n: 10) == 23
// sumOfMultiples(n: 1000) == 233168
func sumOfMultiples(n: Int) -> Int {
  var sum = 0
  for i in 1..<n {
    if i % 3 == 0 || i % 5 == 0 {
      sum += i
    }
  }
  return sum
}

// Return the sum of all the multiples of 3 or 5 below n.
// sumOfMultiples(n: 10) == 23
// sumOfMultiples(n: 1000) == 233168
func sumOfMultiples(n: Int) -> Int {
  var sum = 0
  for i in 1..<n {
    if i % 3 == 0 || i % 5 == 0 {
      sum += i
    }
  }
  return sum
}

// Return the sum of all the multiples of 3 or 5 below n.
// sumOfMultiples(n: 10) == 23
// sumOfMultiples(n: 1000) == 233168
func sumOfMultiples(n: Int) -> Int {
  var sum = 0
  for i in 1..<n {
    if i % 3 == 0 || i % 5 == 0 {
      sum += i
    }
  }
  return sum
}

// Return the sum of all the multiples of 3 or 5 below n.
// sumOfMultiples(n: 10) == 23
// sumOfMultiples(n: 1000) == 233168
func sumOfMultiples(n: Int) -> Int {
  var sum = 0
  for i in 1..<n {
    if i % 3 == 0 || i % 5 == 0 {
      sum += i
    }
  }
  return sum
}

// Return the sum of all the multiples of 3 or 5 below n.
// sumOfMultiples(n: 10) == 23
// sumOfMultiples(n: 1000) == 233168
func sumOfMultiples(n: Int) -> Int {
  var sum = 0
  for i in 1..<n {
    if i % 3 == 0 || i % 5 == 0 {
      sum += i
    }
  }
  return sum
}

// Return the sum of all the multiples of 3 or 5 below n.
// sumOfMultiples(n: 10) == 23
// sumOfMultiples(n: 1000) == 233168
func sumOfMultiples(n: Int) -> Int {
  var sum = 0
  for i in 1..<n {
    if i % 3 == 0 || i % 5 == 0 {
      sum += i
    }
  }
  return sum
}

// Return the sum of all the multiples of 3 or 5 below n.
// sumOfMultiples(n: 10) == 23
// sumOfMultiples(n: 1000) == 233168
func sumOfMultiples(n: Int) -> Int {
  var sum = 0
  for
 // XCTAssertTrue failed

func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  while n % 2 == 0 {
    largest = 2
    n /= 2
  }
  for i in 3...n {
    if n % i == 0 {
      largest = i
      n /= i
      while n % i == 0 {
        n /= i
      }
    }
  }
  return largest
}
```swift
// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  while n % 2 == 0 {
    largest = 2
    n /= 2
  }
  for i in 3...n {
    if n % i == 0 {
      largest = i
      n /= i
      while n % i == 0 {
        n /= i
      }
    }
  }
  return largest
}
<|file_separator|>

func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  while n % 2 == 0 {
    largest = 2
    n /= 2
  }
  for i in 3...n {
    while n % i == 0 {
      largest = i
      n /= i
    }
  }
  return largest
}
```swift
// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  while n % 2 == 0 {
    largest = 2
    n /= 2
  }
  for i in 3...n {
    while n % i == 0 {
      largest = i
      n /= i
    }
  }
  return largest
}
<|file_separator|>

func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  while n % 2 == 0 {
    largest = 2
    n = n / 2
  }
  for i in 3...n {
    while n % i == 0 {
      largest = i
      n = n / i
    }
  }
  return largest
}

func sumOfDigits(n: Int) -> Int {
  var n = n
  var sum = 0
  while n > 0 {
    sum += n % 10
    n = n / 10
  }
  return sum
}
```swift
// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  while n % 2 == 0 {
    largest = 2
    n = n / 2
  }
  for i in 3...n {
    while n % i == 0 {
      largest = i
      n = n / i
    }
  }
  return largest
}

// Return the sum of the digits of n.
// sumOfDigits(n: 12345) == 15
// sumOfDigits(n: 123456789) == 45
func sumOfDigits(n: Int) -> Int {
  var n = n
  var sum = 0
  while n > 0 {
    sum += n % 10
    n = n / 10
  }
  return sum
}

// Return the sum of the digits of n.
// sumOfDigits(n: 12345) == 15
// sumOfDigits(n: 123456789) == 45
func sumOfDigits(n: Int) -> Int {
  var n = n
  var sum = 0
  while n > 0 {
    sum += n % 10
    n = n / 10
  }
  return sum
}

// Return the sum of the digits of n.
// sumOfDigits(n: 12345) == 15
// sumOfDigits(n: 123456789) == 45
func sumOfDigits(n: Int) -> Int {
  var n = n
  var sum = 0
  while n > 0 {
    sum += n % 10
    n = n / 10
  }
  return sum
}

// Return the sum of the digits of n.
// sumOfDigits(n: 12345) == 15
// sumOfDigits(n: 123456789) == 45
func sumOfDigits(n: Int) -> Int {
  var n = n
  var sum = 0
  while n > 0 {
    sum += n % 10
    n = n / 10
  }
  return sum
}

// Return the sum of the digits of n.
// sumOfDigits(n: 12345) == 15
// sumOfDigits(n: 123456789) == 45
func sumOfDigits(n: Int) -> Int {
  var n = n
  var sum = 0
  while n > 0 {
    sum += n % 10
    n = n / 10
  }
  return sum
}

// Return the sum of the digits of n.
// sumOfDigits(n: 12345) == 15
// sumOfDigits(n: 123456789) == 45
func sumOfDigits(n: Int) -> Int {
  var n = n
  var sum = 0
  while n > 0 {
    sum += n % 10
    n = n / 10
  }
  return sum
}

// Return the sum of the digits of n.
// sumOfDigits(n: 12345) == 15
// sumOfDigits(n: 123456789) == 45
func sumOfDigits(n: Int) -> Int {
  var n = n
  var sum = 0
  while n > 0 {
    sum += n % 10
    n = n / 10
  }
  return sum
}

// Return the sum of the digits of n.
// sumOfDigits(n: 12345) == 15
// sumOfDigits(n: 123456789) == 45
func sumOfDigits(n: Int) -> Int {
  var n = n
  var sum = 0
  while n > 0 {
    sum += n % 10
    n = n / 10
  }
  return sum
}

// Return the sum of the digits of n.
// sumOfDigits(n: 12345) ==

func largestPrimeFactor(n: Int) -> Int {
    var n = n
    var largest = 0
    var i = 2
    while i < n {
        if n % i == 0 {
            n /= i
            largest = i
        } else {
            i += 1
        }
    }
    return largest
}
```swift
// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
    var n = n
    var largest = 0
    var i = 2
    while i < n {
        if n % i == 0 {
            n /= i
            largest = i
        } else {
            i += 1
        }
    }
    return largest
}
<|file_separator|>
 // XCTAssertTrue failed

func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  var i = 2
  while i < n {
    if n % i == 0 {
      n /= i
      largest = i
    }
    i += 1
  }
  return largest
}

func sumMultiples(n: Int) -> Int {
  var sum = 0
  for i in 1..<n {
    if i % 3 == 0 || i % 5 == 0 {
      sum += i
    }
  }
  return sum
}
```swift
// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  var i = 2
  while i < n {
    if n % i == 0 {
      n /= i
      largest = i
    }
    i += 1
  }
  return largest
}

// Return the sum of all the multiples of 3 or 5 below n.
// sumMultiples(n: 10) == 23
// sumMultiples(n: 1000) == 233168
func sumMultiples(n: Int) -> Int {
  var sum = 0
  for i in 1..<n {
    if i % 3 == 0 || i % 5 == 0 {
      sum += i
    }
  }
  return sum
}

// Return the sum of all the multiples of 3 or 5 below n.
// sumMultiples(n: 10) == 23
// sumMultiples(n: 1000) == 233168
func sumMultiples(n: Int) -> Int {
  var sum = 0
  for i in 1..<n {
    if i % 3 == 0 || i % 5 == 0 {
      sum += i
    }
  }
  return sum
}

// Return the sum of all the multiples of 3 or 5 below n.
// sumMultiples(n: 10) == 23
// sumMultiples(n: 1000) == 233168
func sumMultiples(n: Int) -> Int {
  var sum = 0
  for i in 1..<n {
    if i % 3 == 0 || i % 5 == 0 {
      sum += i
    }
  }
  return sum
}

// Return the sum of all the multiples of 3 or 5 below n.
// sumMultiples(n: 10) == 23
// sumMultiples(n: 1000) == 233168
func sumMultiples(n: Int) -> Int {
  var sum = 0
  for i in 1..<n {
    if i % 3 == 0 || i % 5 == 0 {
      sum += i
    }
  }
  return sum
}

// Return the sum of all the multiples of 3 or 5 below n.
// sumMultiples(n: 10) == 23
// sumMultiples(n: 1000) == 233168
func sumMultiples(n: Int) -> Int {
  var sum = 0
  for i in 1..<n {
    if i % 3 == 0 || i % 5 == 0 {
      sum += i
    }
  }
  return sum
}

// Return the sum of all the multiples of 3 or 5 below n.
// sumMultiples(n: 10) == 23
// sumMultiples(n: 1000) == 233168
func sumMultiples(n: Int) -> Int {
  var sum = 0
  for i in 1..<n {
    if i % 3 == 0 || i % 5 == 0 {
      sum += i
    }
  }
  return sum
}

// Return the sum of all the multiples of 3 or 5 below n.
// sumMultiples(n: 10) == 23
// sumMultiples(n: 1000) == 233168
func sumMultiples(n: Int) -> Int {
  var sum = 0
  for i in 1..<n {
    if i % 3 == 0 || i % 5 == 0 {
      sum += i
    }
  }
  return sum
}

// Return the sum of all the multiples of 3 or 5 below n.
// sumMultiples(n: 10) == 23
// sumMultiples(n: 1000) == 233168
func sumMultiples(n: Int) -> Int {
  var sum = 0
  for i in 1..<n {
    if i % 3 == 0 || i % 5 == 0 {
 // XCTAssertTrue failed

func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  var i = 2
  while i <= n {
    if n % i == 0 {
      n /= i
      largest = i
    } else {
      i += 1
    }
  }
  return largest
}
```swift
// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  var i = 2
  while i <= n {
    if n % i == 0 {
      n /= i
      largest = i
    } else {
      i += 1
    }
  }
  return largest
}

// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  var i = 2
  while i <= n {
    if n % i == 0 {
      n /= i
      largest = i
    } else {
      i += 1
    }
  }
  return largest
}

// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  var i = 2
  while i <= n {
    if n % i == 0 {
      n /= i
      largest = i
    } else {
      i += 1
    }
  }
  return largest
}

// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  var i = 2
  while i <= n {
    if n % i == 0 {
      n /= i
      largest = i
    } else {
      i += 1
    }
  }
  return largest
}

// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  var i = 2
  while i <= n {
    if n % i == 0 {
      n /= i
      largest = i
    } else {
      i += 1
    }
  }
  return largest
}

// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  var i = 2
  while i <= n {
    if n % i == 0 {
      n /= i
      largest = i
    } else {
      i += 1
    }
  }
  return largest
}

// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  var i = 2
  while i <= n {
    if n % i == 0 {
      n /= i
      largest = i
    } else {
      i += 1
    }
  }
  return largest
}

// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  var i = 2
  while i <= n {
    if n % i == 0 {
      n /= i
      

func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largestPrimeFactor = 1
  while n > 1 {
    if n % 2 == 0 {
      largestPrimeFactor = 2
      n /= 2
    } else {
      for i in 3...n {
        if n % i == 0 {
          largestPrimeFactor = i
          n /= i
          break
        }
      }
    }
  }
  return largestPrimeFactor
}
```swift
// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largestPrimeFactor = 1
  while n > 1 {
    if n % 2 == 0 {
      largestPrimeFactor = 2
      n /= 2
    } else {
      for i in 3...n {
        if n % i == 0 {
          largestPrimeFactor = i
          n /= i
          break
        }
      }
    }
  }
  return largestPrimeFactor
}

// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largestPrimeFactor = 1
  while n > 1 {
    if n % 2 == 0 {
      largestPrimeFactor = 2
      n /= 2
    } else {
      for i in 3...n {
        if n % i == 0 {
          largestPrimeFactor = i
          n /= i
          break
        }
      }
    }
  }
  return largestPrimeFactor
}

// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largestPrimeFactor = 1
  while n > 1 {
    if n % 2 == 0 {
      largestPrimeFactor = 2
      n /= 2
    } else {
      for i in 3...n {
        if n % i == 0 {
          largestPrimeFactor = i
          n /= i
          break
        }
      }
    }
  }
  return largestPrimeFactor
}

// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largestPrimeFactor = 1
  while n > 1 {
    if n % 2 == 0 {
      largestPrimeFactor = 2
      n /= 2
    } else {
      for i in 3...n {
        if n % i == 0 {
          largestPrimeFactor = i
          n /= i
          break
        }
      }
    }
  }
  return largestPrimeFactor
}

// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largestPrimeFactor = 1
  while n > 1 {
    if n % 2 == 0 {
      largestPrimeFactor = 2
      n /= 2
    } else {
      for i in 3...n {
        if n % i == 0 {
          largestPrimeFactor = i
          n /= i
          break
        }
      }
    }
  }
  return largestPrimeFactor
}

// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largestPrimeFactor = 1
  while n > 1 {
    if n % 2 == 0 {
      largestPrimeFactor = 2
      n /= 2
    } else {
      for i in 3...n {
        if n % i == 0 {
          largestPrimeFactor = i
          n /= i
          break
        }
      }
    }
  }
  return largestPrimeFactor
}

// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor

func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  while n > 1 {
    if n % 2 == 0 {
      n = n / 2
      largest = 2
    } else {
      var i = 3
      while i < n {
        if n % i == 0 {
          n = n / i
          largest = i
        }
        i += 2
      }
    }
  }
  return largest
}
```swift
// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// largestPrimeFactor(n: 13195) == 29
// largestPrimeFactor(n: 2048) == 2
func largestPrimeFactor(n: Int) -> Int {
  var n = n
  var largest = 0
  while n > 1 {
    if n % 2 == 0 {
      n = n / 2
      largest = 2
    } else {
      var i = 3
      while i < n {
        if n % i == 0 {
          n = n / i
          largest = i
        }
        i += 2
      }
    }
  }
  return largest
}
<|file_separator|>

func sumToN(n: Int) -> Int {
  var sum = 0
  for i in 1...n {
    sum += i
  }
  return sum
}

func sumToNRec(n: Int) -> Int {
  if n == 1 {
    return 1
  } else {
    return n + sumToNRec(n: n - 1)
  }
}

func sumToNRecTail(n: Int) -> Int {
  if n == 1 {
    return 1
  } else {
    return sumToNRecTail(n: n - 1) + n
  }
}

func sumToNRecTailRec(n: Int) -> Int {
  if n == 1 {
    return 1
  } else {
    return sumToNRecTailRec(n: n - 1) + n
  }
}

func sumToNRecTailRecTail(n: Int) -> Int {
  if n == 1 {
    return 1
  } else {
    return sumToNRecTailRecTail(n: n - 1) + n
  }
}

func sumToNRecTailRecTailTail(n: Int) -> Int {
  if n == 1 {
    return 1
  } else {
    return sumToNRecTailRecTailTail(n: n - 1) + n
  }
}
```swift
// sum_to_n is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToN(n: Int) -> Int {
  var sum = 0
  for i in 1...n {
    sum += i
  }
  return sum
}

// sum_to_n_rec is a recursive function that sums numbers from 1 to n.
// sumToNRec(n: 30) == 465
// sumToNRec(n: 100) == 5050
// sumToNRec(n: 5) == 15
// sumToNRec(n: 10) == 55
// sumToNRec(n: 1) == 1
func sumToNRec(n: Int) -> Int {
  if n == 1 {
    return 1
  } else {
    return n + sumToNRec(n: n - 1)
  }
}

// sum_to_n_rec_tail is a recursive function that sums numbers from 1 to n.
// sumToNRecTail(n: 30) == 465
// sumToNRecTail(n: 100) == 5050
// sumToNRecTail(n: 5) == 15
// sumToNRecTail(n: 10) == 55
// sumToNRecTail(n: 1) == 1
func sumToNRecTail(n: Int) -> Int {
  if n == 1 {
    return 1
  } else {
    return sumToNRecTail(n: n - 1) + n
  }
}

// sum_to_n_rec_tail_rec is a recursive function that sums numbers from 1 to n.
// sumToNRecTailRec(n: 30) == 465
// sumToNRecTailRec(n: 100) == 5050
// sumToNRecTailRec(n: 5) == 15
// sumToNRecTailRec(n: 10) == 55
// sumToNRecTailRec(n: 1) == 1
func sumToNRecTailRec(n: Int) -> Int {
  if n == 1 {
    return 1
  } else {
    return sumToNRecTailRec(n: n - 1) + n
  }
}

// sum_to_n_rec_tail_rec_tail is a recursive function that sums numbers from 1 to n.
// sumToNRecTailRecTail(n: 30) == 465
// sumToNRecTailRecTail(n: 100) == 5050
// sumToNRecTailRecTail(n: 5) == 15
// sumToNRecTailRecTail(n: 10) == 55
// sumToNRecTailRecTail(n: 1) == 1
func sumToNRecTailRecTail(n: Int) -> Int {
  if n == 1 {
    return 1
  } else {
    return sumToNRecTailRecTail(n: n - 1) + n
  }
}

// sum_to_n_rec_tail_rec_tail_tail is a recursive function that sums numbers from 1 to n.
// sumToNRecTailRecTailTail(n: 30) == 465
// sumToNRecTailRecTailTail(n: 100) == 5050
// sumToNRecTailRecTailTail(n: 5) == 15
// sumToNRecTailRecTailTail(n: 10) == 55
// sumToNRecTailRecTailTail(n: 1) == 1
func sumToNRecTailRecTailTail(n: Int) -> Int {
  if n == 1 {
    return 1
  } else {
    return sumToNRecTailRecTailTail(n: n - 1) + n
  }
}

// sum_to_n_rec_tail_rec_tail_tail_tail is a recursive function that sums numbers from 1 to n.
// sumToNRecTailRecTailTailTail(n: 30) == 465
// sumToNRecTailRecTailTailTail(n: 100) == 5050
// sumToNRecTailRecTailTailTail(n

func sumToN(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}
```swift
// sum_to_n is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToN(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}
<|file_separator|>

func sumToN(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToN(n: n - 1)
}
```swift
// sum_to_n is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToN(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToN(n: n - 1)
}
<|file_separator|>

func sumToN(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToN(n: n - 1)
}
```swift
// sum_to_n is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToN(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToN(n: n - 1)
}
<|file_separator|>

func sumToN(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}
```swift
// sum_to_n is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToN(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}
<|file_separator|>

func sumToN(n: Int) -> Int {
  var sum = 0
  for i in 1...n {
    sum += i
  }
  return sum
}
```swift
// sum_to_n is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToN(n: Int) -> Int {
  var sum = 0
  for i in 1...n {
    sum += i
  }
  return sum
}
<|file_separator|>

func sumToN(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToN(n: n - 1)
}

func sumToNRec(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRec(n: n - 1)
}

func sumToNIter(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}

func sumToNIter2(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}

func sumToNIter3(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}

func sumToNIter4(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}

func sumToNIter5(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}
```swift
// sum_to_n is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToN(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToN(n: n - 1)
}

// sum_to_n_rec is a recursive function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToNRec(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRec(n: n - 1)
}

// sum_to_n_iter is a iterative function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToNIter(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}

// sum_to_n_iter2 is a iterative function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToNIter2(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}

// sum_to_n_iter3 is a iterative function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToNIter3(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}

// sum_to_n_iter4 is a iterative function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToNIter4(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}

// sum_to_n_iter5 is a iterative function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToNIter5(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}

// sum_to_n_iter6 is a iterative function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55

func sumToN(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}

func sumToNRec(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRec(n: n - 1)
}

func sumToNRecRec(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRecRec(n: n - 1)
}

func sumToNRecRecRec(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRecRecRec(n: n - 1)
}

func sumToNRecRecRecRec(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRecRecRecRec(n: n - 1)
}

func sumToNRecRecRecRecRec(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRecRecRecRecRec(n: n - 1)
}

func sumToNRecRecRecRecRecRec(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRecRecRecRecRecRec(n: n - 1)
}
```swift
// sum_to_n is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToN(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}

// sum_to_n_rec is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToNRec(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRec(n: n - 1)
}

// sum_to_n_rec_rec is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToNRecRec(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRecRec(n: n - 1)
}

// sum_to_n_rec_rec_rec is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToNRecRecRec(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRecRecRec(n: n - 1)
}

// sum_to_n_rec_rec_rec_rec is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToNRecRecRecRec(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRecRecRecRec(n: n - 1)
}

// sum_to_n_rec_rec_rec_rec_rec is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToNRecRecRecRecRec(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRecRecRecRecRec(n: n - 1)
}

// sum_to_n_rec_rec_rec_rec_rec_rec is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToNRecRecRecRecRecRec(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRecRecRecRecRecRec(n: n - 1)
}

// sum_to_n_rec_rec_rec_rec_rec_rec_rec is a function that sums numbers

func sumToN(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}

func sumToNRec(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRec(n: n - 1)
}

func sumToNRec2(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRec2(n: n - 1)
}

func sumToNRec3(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRec3(n: n - 1)
}

func sumToNRec4(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRec4(n: n - 1)
}

func sumToNRec5(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRec5(n: n - 1)
}

func sumToNRec6(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRec6(n: n - 1)
}
```swift
// sum_to_n is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToN(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}

// sum_to_n_rec is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToNRec(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRec(n: n - 1)
}

// sum_to_n_rec_2 is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToNRec2(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRec2(n: n - 1)
}

// sum_to_n_rec_3 is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToNRec3(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRec3(n: n - 1)
}

// sum_to_n_rec_4 is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToNRec4(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRec4(n: n - 1)
}

// sum_to_n_rec_5 is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToNRec5(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRec5(n: n - 1)
}

// sum_to_n_rec_6 is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToNRec6(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n + sumToNRec6(n: n - 1)
}

// sum_to_n_rec_7 is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n:

func sumToN(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}
```swift
// sum_to_n is a function that sums numbers from 1 to n.
// sumToN(n: 30) == 465
// sumToN(n: 100) == 5050
// sumToN(n: 5) == 15
// sumToN(n: 10) == 55
// sumToN(n: 1) == 1
func sumToN(n: Int) -> Int {
    var sum = 0
    for i in 1...n {
        sum += i
    }
    return sum
}
<|file_separator|>

func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "(" {
            stack.append(bracket)
        } else if bracket == ")" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// brackets is a string of "(" and ")".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "(") == false
// correctBracketing(brackets: "()") == true
// correctBracketing(brackets: "(()())") == true
// correctBracketing(brackets: ")(()") == false
func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "(" {
            stack.append(bracket)
        } else if bracket == ")" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
<|file_separator|>

func correctBracketing(brackets: String) -> Bool {
  var stack = [Character]()
  for bracket in brackets {
    if bracket == "(" {
      stack.append(bracket)
    } else if bracket == ")" {
      if stack.isEmpty {
        return false
      }
      stack.removeLast()
    }
  }
  return stack.isEmpty
}
```swift
// brackets is a string of "(" and ")".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "(") == false
// correctBracketing(brackets: "()") == true
// correctBracketing(brackets: "(()())") == true
// correctBracketing(brackets: ")(()") == false
func correctBracketing(brackets: String) -> Bool {
  var stack = [Character]()
  for bracket in brackets {
    if bracket == "(" {
      stack.append(bracket)
    } else if bracket == ")" {
      if stack.isEmpty {
        return false
      }
      stack.removeLast()
    }
  }
  return stack.isEmpty
}
<|file_separator|>

func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "(" {
            stack.append(bracket)
        } else if bracket == ")" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// brackets is a string of "(" and ")".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "(") == false
// correctBracketing(brackets: "()") == true
// correctBracketing(brackets: "(()())") == true
// correctBracketing(brackets: ")(()") == false
func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "(" {
            stack.append(bracket)
        } else if bracket == ")" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
<|file_separator|>

func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "(" {
            stack.append(bracket)
        } else if bracket == ")" {
            if stack.count == 0 {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.count == 0
}
```swift
// brackets is a string of "(" and ")".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "(") == false
// correctBracketing(brackets: "()") == true
// correctBracketing(brackets: "(()())") == true
// correctBracketing(brackets: ")(()") == false
func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "(" {
            stack.append(bracket)
        } else if bracket == ")" {
            if stack.count == 0 {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.count == 0
}
<|file_separator|>

func correctBracketing(brackets: String) -> Bool {
  var stack = [Character]()
  for bracket in brackets {
    if bracket == "(" {
      stack.append(bracket)
    } else if bracket == ")" {
      if stack.isEmpty {
        return false
      }
      stack.removeLast()
    }
  }
  return stack.isEmpty
}
```swift
// brackets is a string of "(" and ")".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "(") == false
// correctBracketing(brackets: "()") == true
// correctBracketing(brackets: "(()())") == true
// correctBracketing(brackets: ")(()") == false
func correctBracketing(brackets: String) -> Bool {
  var stack = [Character]()
  for bracket in brackets {
    if bracket == "(" {
      stack.append(bracket)
    } else if bracket == ")" {
      if stack.isEmpty {
        return false
      }
      stack.removeLast()
    }
  }
  return stack.isEmpty
}
<|file_separator|>

func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "(" {
            stack.append(bracket)
        } else if bracket == ")" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// brackets is a string of "(" and ")".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "(") == false
// correctBracketing(brackets: "()") == true
// correctBracketing(brackets: "(()())") == true
// correctBracketing(brackets: ")(()") == false
func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "(" {
            stack.append(bracket)
        } else if bracket == ")" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
<|file_separator|>

func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "(" {
            stack.append(bracket)
        } else {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// brackets is a string of "(" and ")".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "(") == false
// correctBracketing(brackets: "()") == true
// correctBracketing(brackets: "(()())") == true
// correctBracketing(brackets: ")(()") == false
func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "(" {
            stack.append(bracket)
        } else {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
<|file_separator|>

func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "(" {
            stack.append(bracket)
        } else if bracket == ")" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// brackets is a string of "(" and ")".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "(") == false
// correctBracketing(brackets: "()") == true
// correctBracketing(brackets: "(()())") == true
// correctBracketing(brackets: ")(()") == false
func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "(" {
            stack.append(bracket)
        } else if bracket == ")" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
<|file_separator|>

func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "(" {
            stack.append(bracket)
        } else {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// brackets is a string of "(" and ")".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "(") == false
// correctBracketing(brackets: "()") == true
// correctBracketing(brackets: "(()())") == true
// correctBracketing(brackets: ")(()") == false
func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "(" {
            stack.append(bracket)
        } else {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
<|file_separator|>

func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "(" {
            stack.append(bracket)
        } else {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// brackets is a string of "(" and ")".
// return true if every opening bracket has a corresponding closing bracket.
// correctBracketing(brackets: "(") == false
// correctBracketing(brackets: "()") == true
// correctBracketing(brackets: "(()())") == true
// correctBracketing(brackets: ")(()") == false
func correctBracketing(brackets: String) -> Bool {
    var stack = [Character]()
    for bracket in brackets {
        if bracket == "(" {
            stack.append(bracket)
        } else {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
<|file_separator|>

func derivative(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}

func value(xs: [Int], x: Int) -> Int {
    var result = xs[0]
    for i in 1..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}
```swift
// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return derivative of this polynomial in the same form.
// derivative(xs: [3, 1, 2, 4, 5]) == [1, 4, 12, 20]
// derivative(xs: [1, 2, 3]) == [2, 6]
func derivative(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial for x = 3.
// value(xs: [3, 1, 2, 4, 5], x: 3) == 3 + 1 * 3 + 2 * 3^2 + 4 * 3^3 + 5 * 3^4
// value(xs: [1, 2, 3], x: 3) == 1 + 2 * 3 + 3 * 3^2
func value(xs: [Int], x: Int) -> Int {
    var result = xs[0]
    for i in 1..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial for x = 3.
// value(xs: [3, 1, 2, 4, 5], x: 3) == 3 + 1 * 3 + 2 * 3^2 + 4 * 3^3 + 5 * 3^4
// value(xs: [1, 2, 3], x: 3) == 1 + 2 * 3 + 3 * 3^2
func value(xs: [Int], x: Int) -> Int {
    var result = xs[0]
    for i in 1..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial for x = 3.
// value(xs: [3, 1, 2, 4, 5], x: 3) == 3 + 1 * 3 + 2 * 3^2 + 4 * 3^3 + 5 * 3^4
// value(xs: [1, 2, 3], x: 3) == 1 + 2 * 3 + 3 * 3^2
func value(xs: [Int], x: Int) -> Int {
    var result = xs[0]
    for i in 1..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial for x = 3.
// value(xs: [3, 1, 2, 4, 5], x: 3) == 3 + 1 * 3 + 2 * 3^2 + 4 * 3^3 + 5 * 3^4
// value(xs: [1, 2, 3], x: 3) == 1 + 2 * 3 + 3 * 3^2
func value(xs: [Int], x: Int) -> Int {
    var result = xs[0]
    for i in 1..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial for x = 3.
// value(xs: [3, 1, 2, 4, 5], x: 3) == 3 + 1 * 3 + 2 * 3^2 + 4 * 3^3 + 5 * 3^4
// value(xs: [1, 2, 3], x: 3) == 1 + 2 * 3 + 3 * 3^2
func value(xs: [Int], x: Int) -> Int {
    var result = xs[
result += xs[i] * pow(x, i) // cannot convert value of type 'Int' to expected argument type 'Decimal'
result += xs[i] * pow(x, i) // cannot convert value of type 'Decimal' to expected argument type 'Int'

func derivative(xs: [Int]) -> [Int] {
  var result = [Int]()
  for i in 1..<xs.count {
    result.append(xs[i] * i)
  }
  return result
}

func value(xs: [Int], x: Int) -> Int {
  var result = 0
  for i in 0..<xs.count {
    result += xs[i] * pow(x, i)
  }
  return result
}
```swift
// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return derivative of this polynomial in the same form.
// derivative(xs: [3, 1, 2, 4, 5]) == [1, 4, 12, 20]
// derivative(xs: [1, 2, 3]) == [2, 6]
func derivative(xs: [Int]) -> [Int] {
  var result = [Int]()
  for i in 1..<xs.count {
    result.append(xs[i] * i)
  }
  return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 12
// value(xs: [1, 2, 3], x: 2) == 14
func value(xs: [Int], x: Int) -> Int {
  var result = 0
  for i in 0..<xs.count {
    result += xs[i] * pow(x, i)
  }
  return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// derivative(xs: [3, 1, 2, 4, 5]) == [1, 4, 12, 20]
// derivative(xs: [1, 2, 3]) == [2, 6]
func derivative(xs: [Int]) -> [Int] {
  var result = [Int]()
  for i in 1..<xs.count {
    result.append(xs[i] * i)
  }
  return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 12
// value(xs: [1, 2, 3], x: 2) == 14
func value(xs: [Int], x: Int) -> Int {
  var result = 0
  for i in 0..<xs.count {
    result += xs[i] * pow(x, i)
  }
  return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// derivative(xs: [3, 1, 2, 4, 5]) == [1, 4, 12, 20]
// derivative(xs: [1, 2, 3]) == [2, 6]
func derivative(xs: [Int]) -> [Int] {
  var result = [Int]()
  for i in 1..<xs.count {
    result.append(xs[i] * i)
  }
  return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 12
// value(xs: [1, 2, 3], x: 2) == 14
func value(xs: [Int], x: Int) -> Int {
  var result = 0
  for i in 0..<xs.count {
    result += xs[i] * pow(x, i)
  }
  return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// derivative(xs: [3, 1, 2, 4, 5]) == [1, 4, 12, 20]
// derivative(xs: [1, 2, 3]) == [2, 6]
func derivative(xs: [Int]) -> [Int] {
  var result = [Int]()
  for i in 1..<xs.count {
    result.append(xs[i] * i)
  }
  return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the
result += xs[i] * pow(x, i) // cannot convert value of type 'Decimal' to expected argument type 'Int'
result += xs[i] * pow(x, i) // cannot convert value of type 'Int' to expected argument type 'Decimal'

func derivative(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}

func value(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 0..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

func pow(x: Int, n: Int) -> Int {
    var result = 1
    for _ in 0..<n {
        result *= x
    }
    return result
}
```swift
// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return derivative of this polynomial in the same form.
// derivative(xs: [3, 1, 2, 4, 5]) == [1, 4, 12, 20]
// derivative(xs: [1, 2, 3]) == [2, 6]
func derivative(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 3 + 2 * 2 + 4 * 2 * 2
// value(xs: [1, 2, 3], x: 2) == 1 + 2 * 2 + 3 * 2 * 2
func value(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 0..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 3 + 2 * 2 + 4 * 2 * 2
// value(xs: [1, 2, 3], x: 2) == 1 + 2 * 2 + 3 * 2 * 2
func pow(x: Int, n: Int) -> Int {
    var result = 1
    for _ in 0..<n {
        result *= x
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 3 + 2 * 2 + 4 * 2 * 2
// value(xs: [1, 2, 3], x: 2) == 1 + 2 * 2 + 3 * 2 * 2
func derivative(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 3 + 2 * 2 + 4 * 2 * 2
// value(xs: [1, 2, 3], x: 2) == 1 + 2 * 2 + 3 * 2 * 2
func value(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 0..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 3 + 2 * 2 + 4 * 2 * 2
// value(xs: [1, 2, 3], x: 2) == 1 + 2 * 2 + 3 * 2 * 2
func pow(x: Int, n: Int) -> Int {
    var result = 1
    for _ in 0..<n {
        result *= x
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 3 + 2 * 2 + 4 * 2 *
result += xs[i] * pow(x, i) // missing argument labels 'x:n:' in call

func derivative(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}

func integral(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<xs.count {
        result.append(xs[i] + (i + 1) * xs[i])
    }
    return result
}

func value(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 0..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

func pow(x: Int, n: Int) -> Int {
    if n == 0 {
        return 1
    }
    if n == 1 {
        return x
    }
    return x * pow(x, n - 1)
}
```swift
// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return derivative of this polynomial in the same form.
// derivative(xs: [3, 1, 2, 4, 5]) == [1, 4, 12, 20]
// derivative(xs: [1, 2, 3]) == [2, 6]
func derivative(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return integral of this polynomial in the same form.
// integral(xs: [3, 1, 2, 4, 5]) == [3, 4, 10, 16]
// integral(xs: [1, 2, 3]) == [1, 3]
func integral(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<xs.count {
        result.append(xs[i] + (i + 1) * xs[i])
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 15
// value(xs: [1, 2, 3], x: 2) == 5
func value(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 0..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 15
// value(xs: [1, 2, 3], x: 2) == 5
func pow(x: Int, n: Int) -> Int {
    if n == 0 {
        return 1
    }
    if n == 1 {
        return x
    }
    return x * pow(x, n - 1)
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 15
// value(xs: [1, 2, 3], x: 2) == 5
func derivative(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return integral of this polynomial in the same form.
// integral(xs: [3, 1, 2, 4, 5]) == [3, 4, 10, 16]
// integral(xs: [1, 2, 3]) == [1, 3]
func integral(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<xs.count {
        result.append(xs[i] + (i + 1) * xs[i])
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 15
// value(xs: [1, 2, 3], x: 2) == 5
func value(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 0..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x
result += xs[i] * pow(x, i) // missing argument labels 'x:n:' in call
return x * pow(x, n - 1) // missing argument labels 'x:n:' in call

func derivative(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}

func value(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 0..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

func pow(x: Int, n: Int) -> Int {
    var result = 1
    for _ in 0..<n {
        result *= x
    }
    return result
}

func derivative(xs: [Int], x: Int) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}
```swift
// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return derivative of this polynomial in the same form.
// derivative(xs: [3, 1, 2, 4, 5]) == [1, 4, 12, 20]
// derivative(xs: [1, 2, 3]) == [2, 6]
func derivative(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 11
// value(xs: [1, 2, 3], x: 2) == 5
func value(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 0..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 11
// value(xs: [1, 2, 3], x: 2) == 5
func pow(x: Int, n: Int) -> Int {
    var result = 1
    for _ in 0..<n {
        result *= x
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 11
// value(xs: [1, 2, 3], x: 2) == 5
func derivative(xs: [Int], x: Int) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 11
// value(xs: [1, 2, 3], x: 2) == 5
func value(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 0..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 11
// value(xs: [1, 2, 3], x: 2) == 5
func pow(x: Int, n: Int) -> Int {
    var result = 1
    for _ in 0..<n {
        result *= x
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 11
// value(xs: [1, 2, 3], x: 2) == 5
func derivative(xs: [Int], x: Int) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2)
result += xs[i] * pow(x, i) // missing argument labels 'x:n:' in call

func derivative(xs: [Int]) -> [Int] {
  var result = [Int]()
  for i in 1..<xs.count {
    result.append(xs[i] * i)
  }
  return result
}
```swift
// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return derivative of this polynomial in the same form.
// derivative(xs: [3, 1, 2, 4, 5]) == [1, 4, 12, 20]
// derivative(xs: [1, 2, 3]) == [2, 6]
func derivative(xs: [Int]) -> [Int] {
  var result = [Int]()
  for i in 1..<xs.count {
    result.append(xs[i] * i)
  }
  return result
}
<|file_separator|>

func derivative(xs: [Int]) -> [Int] {
    return xs.indices.map { xs[$0] * (xs.count - 1 - $0) }
}

func integral(xs: [Int]) -> [Int] {
    return xs.indices.map { xs[$0] + xs.count - 1 - $0 }
}

func value(xs: [Int], x: Int) -> Int {
    return xs.reduce(0) { $0 + $1 * x }
}
```swift
// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return derivative of this polynomial in the same form.
// derivative(xs: [3, 1, 2, 4, 5]) == [1, 4, 12, 20]
// derivative(xs: [1, 2, 3]) == [2, 6]
func derivative(xs: [Int]) -> [Int] {
    return xs.indices.map { xs[$0] * (xs.count - 1 - $0) }
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return integral of this polynomial in the same form.
// integral(xs: [3, 1, 2, 4, 5]) == [3, 4, 10, 16]
// integral(xs: [1, 2, 3]) == [1, 4]
func integral(xs: [Int]) -> [Int] {
    return xs.indices.map { xs[$0] + xs.count - 1 - $0 }
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 10
// value(xs: [1, 2, 3], x: 2) == 5
func value(xs: [Int], x: Int) -> Int {
    return xs.reduce(0) { $0 + $1 * x }
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 10
// value(xs: [1, 2, 3], x: 2) == 5
func value(xs: [Int], x: Int) -> Int {
    return xs.reduce(0) { $0 + $1 * x }
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 10
// value(xs: [1, 2, 3], x: 2) == 5
func value(xs: [Int], x: Int) -> Int {
    return xs.reduce(0) { $0 + $1 * x }
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 10
// value(xs: [1, 2, 3], x: 2) == 5
func value(xs: [Int], x: Int) -> Int {
    return xs.reduce(0) { $0 + $1 * x }
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 10
// value(xs: [1, 2, 3], x: 2) == 5
func value(xs: [Int], x: Int) -> Int {
    return xs.reduce(0) { $0 + $1 * x }
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 10
// value(xs: [1, 2, 3], x: 2) == 5
func value(xs: [Int], x: Int) -> Int {
    return xs.reduce(0) { $0 + $1 * x }
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1
 // XCTAssertTrue failed

func derivative(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}

func value(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 0..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

func derivative(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 1..<xs.count {
        result += xs[i] * i * pow(x, i - 1)
    }
    return result
}
```swift
// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return derivative of this polynomial in the same form.
// derivative(xs: [3, 1, 2, 4, 5]) == [1, 4, 12, 20]
// derivative(xs: [1, 2, 3]) == [2, 6]
func derivative(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 16
// value(xs: [1, 2, 3], x: 2) == 14
func value(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 0..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// derivative(xs: [3, 1, 2, 4, 5], x: 2) == 16
// derivative(xs: [1, 2, 3], x: 2) == 14
func derivative(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 1..<xs.count {
        result += xs[i] * i * pow(x, i - 1)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 16
// value(xs: [1, 2, 3], x: 2) == 14
func value(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 0..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// derivative(xs: [3, 1, 2, 4, 5], x: 2) == 16
// derivative(xs: [1, 2, 3], x: 2) == 14
func derivative(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 1..<xs.count {
        result += xs[i] * i * pow(x, i - 1)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 16
// value(xs: [1, 2, 3], x: 2) == 14
func value(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 0..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return the value of this polynomial at x.
// derivative(xs: [3, 1, 2, 4, 5], x: 2) == 16
// derivative(xs: [1, 2, 3], x: 2) == 14
func derivative(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 1..<xs.count {
        result += xs[i] * i * pow(x, i - 1)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[
result += xs[i] * pow(x, i) // cannot convert value of type 'Int' to expected argument type 'Decimal'
result += xs[i] * pow(x, i) // cannot convert value of type 'Decimal' to expected argument type 'Int'
result += xs[i] * i * pow(x, i - 1) // cannot convert value of type 'Int' to expected argument type 'Decimal'
result += xs[i] * i * pow(x, i - 1) // cannot convert value of type 'Decimal' to expected argument type 'Int'

func derivative(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}

func integral(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<xs.count {
        result.append(xs[i] + (i + 1) * xs[i])
    }
    return result
}

func value(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 0..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

func pow(x: Int, n: Int) -> Int {
    var result = 1
    for _ in 0..<n {
        result *= x
    }
    return result
}
```swift
// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return derivative of this polynomial in the same form.
// derivative(xs: [3, 1, 2, 4, 5]) == [1, 4, 12, 20]
// derivative(xs: [1, 2, 3]) == [2, 6]
func derivative(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return integral of this polynomial in the same form.
// integral(xs: [3, 1, 2, 4, 5]) == [3, 4, 10, 20]
// integral(xs: [1, 2, 3]) == [1, 2, 3]
func integral(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<xs.count {
        result.append(xs[i] + (i + 1) * xs[i])
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 10
// value(xs: [1, 2, 3], x: 2) == 5
func value(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 0..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 10
// value(xs: [1, 2, 3], x: 2) == 5
func pow(x: Int, n: Int) -> Int {
    var result = 1
    for _ in 0..<n {
        result *= x
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 10
// value(xs: [1, 2, 3], x: 2) == 5
func derivative(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 10
// value(xs: [1, 2, 3], x: 2) == 5
func integral(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<xs.count {
        result.append(xs[i] + (i + 1) * xs[i])
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return value of this polynomial at x.
// value(xs: [3, 1, 2, 4, 5], x: 2) == 10
// value(xs: [1, 2, 3], x: 2) == 5
func value(xs: [Int], x: Int) -> Int {
    var result = 0
    for i in 0..<xs.count {
        result += xs[i] * pow(x, i)
    }
    return result
}

// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return value of this polynomial at x.
// value
result += xs[i] * pow(x, i) // missing argument labels 'x:n:' in call

func derivative(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}
```swift
// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return derivative of this polynomial in the same form.
// derivative(xs: [3, 1, 2, 4, 5]) == [1, 4, 12, 20]
// derivative(xs: [1, 2, 3]) == [2, 6]
func derivative(xs: [Int]) -> [Int] {
    var result = [Int]()
    for i in 1..<xs.count {
        result.append(xs[i] * i)
    }
    return result
}
<|file_separator|>

func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    } else if n == 1 {
        return 0
    } else if n == 2 {
        return 1
    } else {
        return fibfib(n: n - 1) + fibfib(n: n - 2) + fibfib(n: n - 3)
    }
}
```swift
// The FibFib number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fibfib(0) == 0
// fibfib(1) == 0
// fibfib(2) == 1
// fibfib(n) == fibfib(n-1) + fibfib(n-2) + fibfib(n-3).
// Please write a function to efficiently compute the n-th element of the fibfib number sequence.
// fibfib(n: 1) == 0
// fibfib(n: 5) == 4
// fibfib(n: 8) == 24
func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    } else if n == 1 {
        return 0
    } else if n == 2 {
        return 1
    } else {
        return fibfib(n: n - 1) + fibfib(n: n - 2) + fibfib(n: n - 3)
    }
}
<|file_separator|>

func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    return fibfib(n: n - 1) + fibfib(n: n - 2) + fibfib(n: n - 3)
}

func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    var a = 0
    var b = 0
    var c = 1
    for _ in 3...n {
        a = b
        b = c
        c = a + b
    }
    return c
}
```swift
// The FibFib number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fibfib(0) == 0
// fibfib(1) == 0
// fibfib(2) == 1
// fibfib(n) == fibfib(n-1) + fibfib(n-2) + fibfib(n-3).
// Please write a function to efficiently compute the n-th element of the fibfib number sequence.
// fibfib(n: 1) == 0
// fibfib(n: 5) == 4
// fibfib(n: 8) == 24
func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    return fibfib(n: n - 1) + fibfib(n: n - 2) + fibfib(n: n - 3)
}

func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    var a = 0
    var b = 0
    var c = 1
    for _ in 3...n {
        a = b
        b = c
        c = a + b
    }
    return c
}

func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    var a = 0
    var b = 0
    var c = 1
    for _ in 3...n {
        a = b
        b = c
        c = a + b
    }
    return c
}

func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    var a = 0
    var b = 0
    var c = 1
    for _ in 3...n {
        a = b
        b = c
        c = a + b
    }
    return c
}

func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    var a = 0
    var b = 0
    var c = 1
    for _ in 3...n {
        a = b
        b = c
        c = a + b
    }
    return c
}

func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    var a = 0
    var b = 0
    var c = 1
    for _ in 3...n {
        a = b
        b = c
        c = a + b
    }
    return c
}

func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    var a = 0
    var b = 0
    var c = 1
    for _ in 3...n {
        a = b
        b = c
        c = a + b
    }
    return c
}

func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    var a = 0
    var b = 0
    var c = 1
    for _ in 3...n {
        a = b
        b = c
        c = a + b
    }
    return c
}

func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    var a = 0
    var b = 0
    var c = 1
    for _ in 3...n {
        a = b
        b = c
        c = a + b
    }
    return c
}

func fib
func fibfib(n: Int) -> Int { // invalid redeclaration of 'fibfib(n:)'

func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    return fibfib(n: n-1) + fibfib(n: n-2) + fibfib(n: n-3)
}
```swift
// The FibFib number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fibfib(0) == 0
// fibfib(1) == 0
// fibfib(2) == 1
// fibfib(n) == fibfib(n-1) + fibfib(n-2) + fibfib(n-3).
// Please write a function to efficiently compute the n-th element of the fibfib number sequence.
// fibfib(n: 1) == 0
// fibfib(n: 5) == 4
// fibfib(n: 8) == 24
func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    return fibfib(n: n-1) + fibfib(n: n-2) + fibfib(n: n-3)
}
<|file_separator|>

func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    return fibfib(n: n-1) + fibfib(n: n-2) + fibfib(n: n-3)
}
```swift
// The FibFib number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fibfib(0) == 0
// fibfib(1) == 0
// fibfib(2) == 1
// fibfib(n) == fibfib(n-1) + fibfib(n-2) + fibfib(n-3).
// Please write a function to efficiently compute the n-th element of the fibfib number sequence.
// fibfib(n: 1) == 0
// fibfib(n: 5) == 4
// fibfib(n: 8) == 24
func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    return fibfib(n: n-1) + fibfib(n: n-2) + fibfib(n: n-3)
}
<|file_separator|>

func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    return fibfib(n: n-1) + fibfib(n: n-2) + fibfib(n: n-3)
}
```swift
// The FibFib number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fibfib(0) == 0
// fibfib(1) == 0
// fibfib(2) == 1
// fibfib(n) == fibfib(n-1) + fibfib(n-2) + fibfib(n-3).
// Please write a function to efficiently compute the n-th element of the fibfib number sequence.
// fibfib(n: 1) == 0
// fibfib(n: 5) == 4
// fibfib(n: 8) == 24
func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    return fibfib(n: n-1) + fibfib(n: n-2) + fibfib(n: n-3)
}
<|file_separator|>

func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    return fibfib(n: n-1) + fibfib(n: n-2) + fibfib(n: n-3)
}
```swift
// The FibFib number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fibfib(0) == 0
// fibfib(1) == 0
// fibfib(2) == 1
// fibfib(n) == fibfib(n-1) + fibfib(n-2) + fibfib(n-3).
// Please write a function to efficiently compute the n-th element of the fibfib number sequence.
// fibfib(n: 1) == 0
// fibfib(n: 5) == 4
// fibfib(n: 8) == 24
func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    return fibfib(n: n-1) + fibfib(n: n-2) + fibfib(n: n-3)
}

print(fibfib(n: 1))
print(fibfib(n: 5))
print(fibfib(n: 8))
<|file_separator|>

func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    } else if n == 1 {
        return 0
    } else if n == 2 {
        return 1
    } else {
        return fibfib(n: n - 1) + fibfib(n: n - 2) + fibfib(n: n - 3)
    }
}
```swift
// The FibFib number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fibfib(0) == 0
// fibfib(1) == 0
// fibfib(2) == 1
// fibfib(n) == fibfib(n-1) + fibfib(n-2) + fibfib(n-3).
// Please write a function to efficiently compute the n-th element of the fibfib number sequence.
// fibfib(n: 1) == 0
// fibfib(n: 5) == 4
// fibfib(n: 8) == 24
func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    } else if n == 1 {
        return 0
    } else if n == 2 {
        return 1
    } else {
        return fibfib(n: n - 1) + fibfib(n: n - 2) + fibfib(n: n - 3)
    }
}

// The Fibbonacci sequence is a sequence similar to the Fibfib number sequence that's defined as follows:
// fib(0) == 0
// fib(1) == 1
// fib(2) == 1
// fib(3) == 2
// fib(4) == 3
// fib(5) == 5
// fib(6) == 8
// fib(7) == 13
// fib(8) == 21
// fib(9) == 34
// fib(10) == 55
// fib(11) == 89
// fib(12) == 144
// fib(13) == 233
// fib(14) == 377
// fib(15) == 610
// fib(16) == 987
// fib(17) == 1597
// fib(18) == 2584
// fib(19) == 4181
// fib(20) == 6765
// fib(21) == 10946
// fib(22) == 17711
// fib(23) == 28657
// fib(24) == 46368
// fib(25) == 75025
// fib(26) == 121393
// fib(27) == 196418
// fib(28) == 317811
// fib(29) == 514229
// fib(30) == 832040
// fib(31) == 1346269
// fib(32) == 2178309
// fib(33) == 3524578
// fib(34) == 5702887
// fib(35) == 9227465
// fib(36) == 14930352
// fib(37) == 24157817
// fib(38) == 39088169
// fib(39) == 63245986
// fib(40) == 102334155
// fib(41) == 165580141
// fib(42) == 267914296
// fib(43) == 433494437
// fib(44) == 701408733
// fib(45) == 1134903170
// fib(46) == 1836311903
// fib(47) == 2971215073
// fib(48) == 4807526976
// fib(49) == 7778742049
// fib(50) == 12586269025
// fib(51) == 20365011074
// fib(52) == 30146497646
// fib(53) == 49794710077
// fib(54) == 80651553846
// fib(55) == 130496954493
// fib(56) == 21114850779
// fib(57) == 34164546229
// fib(58) == 55279397008
// fib(59) == 89443943237
// fib(60

func fibfib(n: Int) -> Int {
  if n == 0 {
    return 0
  }
  if n == 1 {
    return 0
  }
  if n == 2 {
    return 1
  }
  return fibfib(n: n-1) + fibfib(n: n-2) + fibfib(n: n-3)
}
```swift
// The FibFib number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fibfib(0) == 0
// fibfib(1) == 0
// fibfib(2) == 1
// fibfib(n) == fibfib(n-1) + fibfib(n-2) + fibfib(n-3).
// Please write a function to efficiently compute the n-th element of the fibfib number sequence.
// fibfib(n: 1) == 0
// fibfib(n: 5) == 4
// fibfib(n: 8) == 24
func fibfib(n: Int) -> Int {
  if n == 0 {
    return 0
  }
  if n == 1 {
    return 0
  }
  if n == 2 {
    return 1
  }
  return fibfib(n: n-1) + fibfib(n: n-2) + fibfib(n: n-3)
}
<|file_separator|>

func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    return fibfib(n: n-1) + fibfib(n: n-2) + fibfib(n: n-3)
}
```swift
// The FibFib number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fibfib(0) == 0
// fibfib(1) == 0
// fibfib(2) == 1
// fibfib(n) == fibfib(n-1) + fibfib(n-2) + fibfib(n-3).
// Please write a function to efficiently compute the n-th element of the fibfib number sequence.
// fibfib(n: 1) == 0
// fibfib(n: 5) == 4
// fibfib(n: 8) == 24
func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    return fibfib(n: n-1) + fibfib(n: n-2) + fibfib(n: n-3)
}
<|file_separator|>

func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    return fibfib(n: n-1) + fibfib(n: n-2) + fibfib(n: n-3)
}
```swift
// The FibFib number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fibfib(0) == 0
// fibfib(1) == 0
// fibfib(2) == 1
// fibfib(n) == fibfib(n-1) + fibfib(n-2) + fibfib(n-3).
// Please write a function to efficiently compute the n-th element of the fibfib number sequence.
// fibfib(n: 1) == 0
// fibfib(n: 5) == 4
// fibfib(n: 8) == 24
func fibfib(n: Int) -> Int {
    if n == 0 {
        return 0
    }
    if n == 1 {
        return 0
    }
    if n == 2 {
        return 1
    }
    return fibfib(n: n-1) + fibfib(n: n-2) + fibfib(n: n-3)
}

// The Fibbonacci sequence is a sequence similar to the Fibfib number sequence that's defined as follows:
// fib(0) == 0
// fib(1) == 1
// fib(2) == 1
// fib(3) == 2
// fib(4) == 3
// fib(5) == 5
// fib(6) == 8
// fib(7) == 13
// fib(8) == 21
// fib(9) == 34
// fib(10) == 55
// fib(11) == 89
// fib(12) == 144
// fib(13) == 233
// fib(14) == 377
// fib(15) == 610
// fib(16) == 987
// fib(17) == 1597
// fib(18) == 2584
// fib(19) == 4181
// fib(20) == 6765
// fib(21) == 10946
// fib(22) == 17711
// fib(23) == 28657
// fib(24) == 46368
// fib(25) == 75025
// fib(26) == 121393
// fib(27) == 196418
// fib(28) == 317811
// fib(29) == 514229
// fib(30) == 832040
// fib(31) == 1346269
// fib(32) == 2178309
// fib(33) == 3524578
// fib(34) == 5702887
// fib(35) == 9227465
// fib(36) == 14930352
// fib(37) == 24157817
// fib(38) == 39088169
// fib(39) == 63245986
// fib(40) == 102334155
// fib(41) == 165580141
// fib(42) == 267914296
// fib(43) == 433494437
// fib(44) == 701408733
// fib(45) == 1134903170
// fib(46) == 1836311903
// fib(47) == 2971215073
// fib(48) == 4807526976
// fib(49) == 7778742049
// fib(50) == 12586269025
// fib(51) == 20365011074
// fib(52) == 32951280099
// fib(53) == 53444692659
// fib(54) == 86267571272
// fib(55) == 139583862445
// fib(56) == 225851433717
// fib(57) == 365435296162
// fib(58) == 591286729879
// fib(59) == 956722026041
// fib(60) ==

func vowelsCount(s: String) -> Int {
    var count = 0
    for char in s {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            count += 1
        }
    }
    return count
}

func isPalindrome(s: String) -> Bool {
    var reversed = ""
    for char in s {
        reversed = char + reversed
    }
    return s == reversed
}

func isAnagram(s1: String, s2: String) -> Bool {
    var s1 = s1.lowercased()
    var s2 = s2.lowercased()
    if s1.count != s2.count {
        return false
    }
    for char in s1 {
        if s2.contains(char) {
            s2 = s2.replacingOccurrences(of: String(char), with: "", options: .literal, range: nil)
        } else {
            return false
        }
    }
    return true
}

func isPrime(n: Int) -> Bool {
    if n <= 1 {
        return false
    }
    for i in 2..<n {
        if n % i == 0 {
            return false
        }
    }
    return true
}

func isLeapYear(year: Int) -> Bool {
    if year % 4 == 0 {
        if year % 100 == 0 {
            if year % 400 == 0 {
                return true
            } else {
                return false
            }
        } else {
            return true
        }
    } else {
        return false
    }
}

func isFibonacci(n: Int) -> Bool {
    if n <= 1 {
        return true
    }
    var a = 0
    var b = 1
    var c = a + b
    while c <= n {
        if c == n {
            return true
        }
        a = b
        b = c
        c = a + b
    }
    return false
}
```swift
// Write a function vowels_count which takes a string representing
// a word as input and returns the number of vowels in the string.
// Vowels in this case are 'a', 'e', 'i', 'o', 'u'. Here, 'y' is also a
// vowel, but only when it is at the end of the given word.
// Example:
// vowelsCount(s: "abcde") == 2
// vowelsCount(s: "ACEDY") == 3
func vowelsCount(s: String) -> Int {
    var count = 0
    for char in s {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            count += 1
        }
    }
    return count
}

// Write a function is_palindrome which takes a string as input and
// returns true if the string is a palindrome, and false otherwise.
// A palindrome is a word that reads the same backwards as forwards.
// Example:
// isPalindrome(s: "racecar") == true
// isPalindrome(s: "abcde") == false
func isPalindrome(s: String) -> Bool {
    var reversed = ""
    for char in s {
        reversed = char + reversed
    }
    return s == reversed
}

// Write a function is_anagram which takes two strings as input and
// returns true if the strings are anagrams, and false otherwise.
// Two strings are anagrams if they contain the same characters in a
// different order.
// Example:
// isAnagram(s1: "listen", s2: "silent") == true
// isAnagram(s1: "hello", s2: "world") == false
func isAnagram(s1: String, s2: String) -> Bool {
    var s1 = s1.lowercased()
    var s2 = s2.lowercased()
    if s1.count != s2.count {
        return false
    }
    for char in s1 {
        if s2.contains(char) {
            s2 = s2.replacingOccurrences(of: String(char), with: "", options: .literal, range: nil)
        } else {
            return false
        }
    }
    return true
}

// Write a function is_prime which takes a positive integer as input
// and returns true if the integer is a prime number, and false otherwise.
// A prime number is a positive integer that is divisible only by 1 and
// itself.
// Example:
// isPrime(n: 7) == true
// isPrime(n: 10) == false
func isPrime(n: Int) -> Bool {
    if n <= 1 {
        return false
    }
    for i in 2..<n {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// Write a function is_leap_year which takes a year as input and
// returns true if the year is a leap year, and false otherwise.
// A leap year is a year that is divisible by 4, except for years
// divisible by 100, which are not leap years unless they are also
// divisible by 400.
// Example:
// isLeapYear(year: 2020) == true
// isLeapYear(year: 2021) == false
func isLeapYear(year: Int) -> Bool {
    if year % 4 == 0 {
        if year % 100 == 0 {
            if year % 400 == 0 {
                return true
            } else {
                return false
            }
        } else {
            return true
        }
    } else {
        return false
    }
}

// Write a function is_fibonacci which takes a positive integer as
// input and returns true if the integer is a Fibonacci number, and
// false otherwise.
// A Fibonacci number is a number in the Fibonacci sequence
// (https://en.wikipedia.org/wiki/Fibonacci_number) that is the sum
// of the previous two numbers in the sequence.
// Example:
// isFibonacci(n: 5) == true
// isFibonacci(n: 10) == false
func isFibonacci(n: Int) -> Bool {
    if n <= 1 {
        return true
    }
    var a = 0
    var b = 1
    var c = a + b
    while c <= n {
        if c == n {
            return true
        }
        a = b
        b = c
        c = a + b
    }
    return false
}

// Write a function is_palindrome_number which takes a positive
// integer as input and returns true if the integer is a palindrome
// number, and false otherwise.
// A palindrome number is a number that reads the same backwards
// as forwards.
// Example:
//
reversed = char + reversed // cannot convert value of type 'Character' to expected argument type 'String'
var s1 = s1.lowercased() // variable 's1' was never mutated; consider changing to 'let' constant

func vowelsCount(s: String) -> Int {
    var count = 0
    for char in s {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            count += 1
        }
    }
    return count
}
```swift
// Write a function vowels_count which takes a string representing
// a word as input and returns the number of vowels in the string.
// Vowels in this case are 'a', 'e', 'i', 'o', 'u'. Here, 'y' is also a
// vowel, but only when it is at the end of the given word.
// Example:
// vowelsCount(s: "abcde") == 2
// vowelsCount(s: "ACEDY") == 3
func vowelsCount(s: String) -> Int {
    var count = 0
    for char in s {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func vowelsCount(s: String) -> Int {
    let vowels = ["a", "e", "i", "o", "u"]
    var count = 0
    for char in s {
        if vowels.contains(String(char).lowercased()) {
            count += 1
        }
    }
    return count
}
```swift
// Write a function vowels_count which takes a string representing
// a word as input and returns the number of vowels in the string.
// Vowels in this case are 'a', 'e', 'i', 'o', 'u'. Here, 'y' is also a
// vowel, but only when it is at the end of the given word.
// Example:
// vowelsCount(s: "abcde") == 2
// vowelsCount(s: "ACEDY") == 3
func vowelsCount(s: String) -> Int {
    let vowels = ["a", "e", "i", "o", "u"]
    var count = 0
    for char in s {
        if vowels.contains(String(char).lowercased()) {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func vowelsCount(s: String) -> Int {
    var count = 0
    for char in s {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            count += 1
        }
    }
    return count
}
```swift
// Write a function vowels_count which takes a string representing
// a word as input and returns the number of vowels in the string.
// Vowels in this case are 'a', 'e', 'i', 'o', 'u'. Here, 'y' is also a
// vowel, but only when it is at the end of the given word.
// Example:
// vowelsCount(s: "abcde") == 2
// vowelsCount(s: "ACEDY") == 3
func vowelsCount(s: String) -> Int {
    var count = 0
    for char in s {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func vowelsCount(s: String) -> Int {
    let vowels = "aeiouy"
    var count = 0
    for char in s {
        if vowels.contains(char) {
            count += 1
        }
    }
    return count
}

func consonantsCount(s: String) -> Int {
    let consonants = "bcdfghjklmnpqrstvwxyz"
    var count = 0
    for char in s {
        if consonants.contains(char) {
            count += 1
        }
    }
    return count
}

func wordsCount(s: String) -> Int {
    let words = s.split(separator: " ")
    return words.count
}

func uppercaseCount(s: String) -> Int {
    var count = 0
    for char in s {
        if char.isUppercase {
            count += 1
        }
    }
    return count
}

func lowercaseCount(s: String) -> Int {
    var count = 0
    for char in s {
        if char.isLowercase {
            count += 1
        }
    }
    return count
}

func digitsCount(s: String) -> Int {
    var count = 0
    for char in s {
        if char.isDigit {
            count += 1
        }
    }
    return count
}

func spacesCount(s: String) -> Int {
    var count = 0
    for char in s {
        if char.isWhitespace {
            count += 1
        }
    }
    return count
}

func specialCount(s: String) -> Int {
    var count = 0
    for char in s {
        if !char.isLetter && !char.isDigit && !char.isWhitespace {
            count += 1
        }
    }
    return count
}
```swift
// Write a function vowels_count which takes a string representing
// a word as input and returns the number of vowels in the string.
// Vowels in this case are 'a', 'e', 'i', 'o', 'u'. Here, 'y' is also a
// vowel, but only when it is at the end of the given word.
// Example:
// vowelsCount(s: "abcde") == 2
// vowelsCount(s: "ACEDY") == 3
func vowelsCount(s: String) -> Int {
    let vowels = "aeiouy"
    var count = 0
    for char in s {
        if vowels.contains(char) {
            count += 1
        }
    }
    return count
}
// Write a function that takes a string representing a word as input
// and returns the number of consonants in the string.
// Example:
// consonantsCount(s: "abcde") == 2
// consonantsCount(s: "ACEDY") == 3
func consonantsCount(s: String) -> Int {
    let consonants = "bcdfghjklmnpqrstvwxyz"
    var count = 0
    for char in s {
        if consonants.contains(char) {
            count += 1
        }
    }
    return count
}
// Write a function that takes a string representing a word as input
// and returns the number of words in the string.
// Example:
// wordsCount(s: "abcde") == 1
// wordsCount(s: "ACEDY") == 2
func wordsCount(s: String) -> Int {
    let words = s.split(separator: " ")
    return words.count
}
// Write a function that takes a string representing a word as input
// and returns the number of uppercase letters in the string.
// Example:
// uppercaseCount(s: "abcde") == 0
// uppercaseCount(s: "ACEDY") == 2
func uppercaseCount(s: String) -> Int {
    var count = 0
    for char in s {
        if char.isUppercase {
            count += 1
        }
    }
    return count
}
// Write a function that takes a string representing a word as input
// and returns the number of lowercase letters in the string.
// Example:
// lowercaseCount(s: "abcde") == 5
// lowercaseCount(s: "ACEDY") == 0
func lowercaseCount(s: String) -> Int {
    var count = 0
    for char in s {
        if char.isLowercase {
            count += 1
        }
    }
    return count
}
// Write a function that takes a string representing a word as input
// and returns the number of digits in the string.
// Example:
// digitsCount(s: "abcde") == 0
// digitsCount(s: "ACEDY") == 0
// digitsCount(s: "12345") == 5
func digitsCount(s: String) -> Int {
    var count = 0
    for char in s {
        if char.isDigit {
            count += 1
        }
    }
    return count
}
// Write a function that takes a string representing a word as input
// and returns the number of spaces in the string.
// Example:
// spacesCount(s: "abcde") == 0
// spacesCount(s: "ACEDY") == 0
// spacesCount(s: " ") == 1
// spacesCount(s: "  ") == 2
func spacesCount(s: String) -> Int {
    var count = 0
    for char in s {
        if char.isWhitespace {
            count += 1
        }
    }
    return count
}
// Write a function that takes a string representing a word as input
// and returns the number of special characters in the string.
// Example:
// specialCount(s: "abcde") == 0
// specialCount(s: "ACEDY") == 0
// specialCount(s: "12345") == 0
// specialCount(s: " ") == 0
// specialCount(s: "  ") == 0
// specialCount(s: "!@#$%^&*()") == 10
func specialCount(s: String) -> Int {
    var count = 0
    for char in s {
        if !char.isLetter && !char.isDigit && !char.isWhitespace {
            count += 1
        }
    }
    return count
}
// Write a function that takes a string representing a word as input
// and returns the number of characters in the string.
// Example:
// charactersCount(s: "abcde") == 5
// charactersCount(s: "ACEDY") == 5
// charactersCount(s: "12345") == 5
// charactersCount(s: "
if char.isDigit { // value of type 'Character' has no member 'isDigit'
if !char.isLetter && !char.isDigit && !char.isWhitespace { // value of type 'Character' has no member 'isDigit'

func vowelsCount(s: String) -> Int {
    var count = 0
    for char in s {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            count += 1
        }
    }
    return count
}

func removeVowels(s: String) -> String {
    var result = ""
    for char in s {
        if char != "a" && char != "e" && char != "i" && char != "o" && char != "u" {
            result += String(char)
        }
    }
    return result
}

func toLowercase(s: String) -> String {
    var result = ""
    for char in s {
        if char >= "A" && char <= "Z" {
            result += String(char.lowercased())
        } else {
            result += String(char)
        }
    }
    return result
}

func toUppercase(s: String) -> String {
    var result = ""
    for char in s {
        if char >= "a" && char <= "z" {
            result += String(char.uppercased())
        } else {
            result += String(char)
        }
    }
    return result
}

func reverseWords(s: String) -> String {
    var result = ""
    var words = s.components(separatedBy: " ")
    for i in 0..<words.count {
        result += String(words[i].reversed())
        if i < words.count - 1 {
            result += " "
        }
    }
    return result
}

func sortWords(s: String) -> String {
    var words = s.components(separatedBy: " ")
    words.sort()
    var result = ""
    for i in 0..<words.count {
        result += words[i]
        if i < words.count - 1 {
            result += " "
        }
    }
    return result
}

func sortWords(s: String) -> String {
    var words = s.components(separatedBy: " ")
    words.sort(by: >)
    var result = ""
    for i in 0..<words.count {
        result += words[i]
        if i < words.count - 1 {
            result += " "
        }
    }
    return result
}

func sortWords(s: String) -> String {
    var words = s.components(separatedBy: " ")
    words.sort(by: <)
    var result = ""
    for i in 0..<words.count {
        result += words[i]
        if i < words.count - 1 {
            result += " "
        }
    }
    return result
}
```swift
// Write a function vowels_count which takes a string representing
// a word as input and returns the number of vowels in the string.
// Vowels in this case are 'a', 'e', 'i', 'o', 'u'. Here, 'y' is also a
// vowel, but only when it is at the end of the given word.
// Example:
// vowelsCount(s: "abcde") == 2
// vowelsCount(s: "ACEDY") == 3
func vowelsCount(s: String) -> Int {
    var count = 0
    for char in s {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            count += 1
        }
    }
    return count
}
// Write a function that takes a string as input and returns a new string
// with all the vowels removed.
// Example:
// removeVowels(s: "Hello, World!") == "Hll, Wrd!"
func removeVowels(s: String) -> String {
    var result = ""
    for char in s {
        if char != "a" && char != "e" && char != "i" && char != "o" && char != "u" {
            result += String(char)
        }
    }
    return result
}
// Write a function that takes a string as input and returns a new string
// with all the uppercase letters converted to lowercase.
// Example:
// toLowercase(s: "Hello, World!") == "hello, world!"
func toLowercase(s: String) -> String {
    var result = ""
    for char in s {
        if char >= "A" && char <= "Z" {
            result += String(char.lowercased())
        } else {
            result += String(char)
        }
    }
    return result
}
// Write a function that takes a string as input and returns a new string
// with all the lowercase letters converted to uppercase.
// Example:
// toUppercase(s: "Hello, World!") == "HELLO, WORLD!"
func toUppercase(s: String) -> String {
    var result = ""
    for char in s {
        if char >= "a" && char <= "z" {
            result += String(char.uppercased())
        } else {
            result += String(char)
        }
    }
    return result
}
// Write a function that takes a string as input and returns a new string
// with all the words reversed.
// Example:
// reverseWords(s: "Hello, World!") == "olleH, dlroW!"
func reverseWords(s: String) -> String {
    var result = ""
    var words = s.components(separatedBy: " ")
    for i in 0..<words.count {
        result += String(words[i].reversed())
        if i < words.count - 1 {
            result += " "
        }
    }
    return result
}
// Write a function that takes a string as input and returns a new string
// with all the words sorted in alphabetical order.
// Example:
// sortWords(s: "Hello, World!") == "Hello, World!"
func sortWords(s: String) -> String {
    var words = s.components(separatedBy: " ")
    words.sort()
    var result = ""
    for i in 0..<words.count {
        result += words[i]
        if i < words.count - 1 {
            result += " "
        }
    }
    return result
}
// Write a function that takes a string as input and returns a new string
// with all the words sorted in reverse alphabetical order.
// Example:
// sortWords(s: "Hello, World!") == "World! Hello, "
func sortWords(s: String) -> String {
    var words = s.components(separatedBy: " ")
    words.sort(by: >)
    var result = ""
    for i in 0..<words.count {
        result += words[i]
        if i < words.count - 1 {
            result += " "
        }
    }
    return result
}
// Write a function that takes a string as input and returns a new string
// with all the words sorted in ascending order of the length of the words.
// Example:
// sortWords(s: "Hello, World!") == "Hello, World!"
func sortWords(s: String) -> String {
    var words = s.components(separatedBy: " ")
    words.sort(by: <)
    var result = ""
    for i in 0..<words.count {
        result += words[i]
        if i < words.count - 1 {
            result += " "
        }
    }
    return result
}
// Write a function that takes a string as input and returns a new
var words = s.components(separatedBy: " ") // variable 'words' was never mutated; consider changing to 'let' constant
func sortWords(s: String) -> String { // invalid redeclaration of 'sortWords(s:)'
func sortWords(s: String) -> String { // invalid redeclaration of 'sortWords(s:)'

func vowelsCount(s: String) -> Int {
    var vowels = 0
    for char in s {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            vowels += 1
        }
    }
    return vowels
}
```swift
// Write a function vowels_count which takes a string representing
// a word as input and returns the number of vowels in the string.
// Vowels in this case are 'a', 'e', 'i', 'o', 'u'. Here, 'y' is also a
// vowel, but only when it is at the end of the given word.
// Example:
// vowelsCount(s: "abcde") == 2
// vowelsCount(s: "ACEDY") == 3
func vowelsCount(s: String) -> Int {
    var vowels = 0
    for char in s {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            vowels += 1
        }
    }
    return vowels
}
<|file_separator|>
 // XCTAssertTrue failed

func vowelsCount(s: String) -> Int {
    var count = 0
    let vowels = ["a", "e", "i", "o", "u"]
    for char in s {
        if vowels.contains(String(char).lowercased()) {
            count += 1
        }
    }
    return count
}
```swift
// Write a function vowels_count which takes a string representing
// a word as input and returns the number of vowels in the string.
// Vowels in this case are 'a', 'e', 'i', 'o', 'u'. Here, 'y' is also a
// vowel, but only when it is at the end of the given word.
// Example:
// vowelsCount(s: "abcde") == 2
// vowelsCount(s: "ACEDY") == 3
func vowelsCount(s: String) -> Int {
    var count = 0
    let vowels = ["a", "e", "i", "o", "u"]
    for char in s {
        if vowels.contains(String(char).lowercased()) {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func vowelsCount(s: String) -> Int {
    var vowels = 0
    for char in s {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            vowels += 1
        }
    }
    return vowels
}
```swift
// Write a function vowels_count which takes a string representing
// a word as input and returns the number of vowels in the string.
// Vowels in this case are 'a', 'e', 'i', 'o', 'u'. Here, 'y' is also a
// vowel, but only when it is at the end of the given word.
// Example:
// vowelsCount(s: "abcde") == 2
// vowelsCount(s: "ACEDY") == 3
func vowelsCount(s: String) -> Int {
    var vowels = 0
    for char in s {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            vowels += 1
        }
    }
    return vowels
}
<|file_separator|>
 // XCTAssertTrue failed

func vowelsCount(s: String) -> Int {
    var count = 0
    for char in s {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            count += 1
        }
    }
    return count
}
```swift
// Write a function vowels_count which takes a string representing
// a word as input and returns the number of vowels in the string.
// Vowels in this case are 'a', 'e', 'i', 'o', 'u'. Here, 'y' is also a
// vowel, but only when it is at the end of the given word.
// Example:
// vowelsCount(s: "abcde") == 2
// vowelsCount(s: "ACEDY") == 3
func vowelsCount(s: String) -> Int {
    var count = 0
    for char in s {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func circularShift(x: Int, shift: Int) -> String {
  let digits = String(x).map { String($0) }
  let shifted = digits.map { String($0) }
  for _ in 0..<shift {
    shifted.insert(String(digits.last!), at: 0)
    shifted.removeLast()
  }
  return shifted.joined()
}
```swift
// Circular shift the digits of the integer x, shift the digits right by shift
// and return the result as a string.
// If shift > number of digits, return digits reversed.
// circularShift(x: 12, shift: 1) == "21"
// circularShift(x: 12, shift: 2) == "12"
func circularShift(x: Int, shift: Int) -> String {
  let digits = String(x).map { String($0) }
  let shifted = digits.map { String($0) }
  for _ in 0..<shift {
    shifted.insert(String(digits.last!), at: 0)
    shifted.removeLast()
  }
  return shifted.joined()
}
<|file_separator|>
shifted.insert(String(digits.last!), at: 0) // cannot use mutating member on immutable value: 'shifted' is a 'let' constant
shifted.removeLast() // cannot use mutating member on immutable value: 'shifted' is a 'let' constant

```swift
// Circular shift the digits of the integer x, shift the digits right by shift
// and return the result as a string.
// If shift > number of digits, return digits reversed.
// circularShift(x: 12, shift: 1) == "21"
// circularShift(x: 12, shift: 2) == "12"
func circularShift(x: Int, shift: Int) -> String {
    var x = x
    var shift = shift
    if shift > x.count {
        shift = x.count
    }
    let x = String(x)
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x = x.map { String($0) }
    let x = x.map { Int($0)! }
    let x
XCTAssertTrue(circularShift(x: 100, shift: 2) == "001") // cannot find 'circularShift' in scope
XCTAssertTrue(circularShift(x: 12, shift: 2) == "12") // cannot find 'circularShift' in scope
XCTAssertTrue(circularShift(x: 97, shift: 8) == "79") // cannot find 'circularShift' in scope
XCTAssertTrue(circularShift(x: 12, shift: 1) == "21") // cannot find 'circularShift' in scope
XCTAssertTrue(circularShift(x: 11, shift: 101) == "11") // cannot find 'circularShift' in scope

func circularShift(x: Int, shift: Int) -> String {
  let digits = String(x).map { String($0) }
  let shifted = digits.map { String($0) }.reversed()
  let shiftedDigits = shifted.map { Int($0)! }
  let shiftedDigitsShifted = shiftedDigits.map { $0 + shift }
  let shiftedDigitsShiftedReversed = shiftedDigitsShifted.map { String($0) }.reversed()
  let shiftedDigitsShiftedReversedString = shiftedDigitsShiftedReversed.map { String($0) }.joined()
  return shiftedDigitsShiftedReversedString
}
```swift
// Circular shift the digits of the integer x, shift the digits right by shift
// and return the result as a string.
// If shift > number of digits, return digits reversed.
// circularShift(x: 12, shift: 1) == "21"
// circularShift(x: 12, shift: 2) == "12"
func circularShift(x: Int, shift: Int) -> String {
  let digits = String(x).map { String($0) }
  let shifted = digits.map { String($0) }.reversed()
  let shiftedDigits = shifted.map { Int($0)! }
  let shiftedDigitsShifted = shiftedDigits.map { $0 + shift }
  let shiftedDigitsShiftedReversed = shiftedDigitsShifted.map { String($0) }.reversed()
  let shiftedDigitsShiftedReversedString = shiftedDigitsShiftedReversed.map { String($0) }.joined()
  return shiftedDigitsShiftedReversedString
}

// Given an integer x, return the number of 1's in its binary representation.
// For example, 128 has 1 as a binary representation.
// numberOfOnes(x: 128) == 1
func numberOfOnes(x: Int) -> Int {
  let binary = String(x, radix: 2)
  let binaryArray = binary.map { String($0) }
  let binaryArrayReversed = binaryArray.map { String($0) }.reversed()
  let binaryArrayReversedString = binaryArrayReversed.map { String($0) }.joined()
  let binaryArrayReversedStringArray = binaryArrayReversedString.map { String($0) }
  let binaryArrayReversedStringArrayReversed = binaryArrayReversedStringArray.map { String($0) }.reversed()
  let binaryArrayReversedStringArrayReversedString = binaryArrayReversedStringArrayReversed.map { String($0) }.joined()
  let binaryArrayReversedStringArrayReversedStringArray = binaryArrayReversedStringArrayReversedString.map { String($0) }
  let binaryArrayReversedStringArrayReversedStringArrayReversed = binaryArrayReversedStringArrayReversedStringArray.map { String($0) }.reversed()
  let binaryArrayReversedStringArrayReversedStringArrayReversedString = binaryArrayReversedStringArrayReversedStringArrayReversed.map { String($0) }.joined()
  let binaryArrayReversedStringArrayReversedStringArrayReversedStringArray = binaryArrayReversedStringArrayReversedStringArrayReversedString.map { String($0) }
  let binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversed = binaryArrayReversedStringArrayReversedStringArrayReversedStringArray.map { String($0) }.reversed()
  let binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedString = binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversed.map { String($0) }.joined()
  let binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArray = binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedString.map { String($0) }
  let binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversed = binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedString.map { String($0) }.reversed()
  let binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedString = binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArray.map { String($0) }.joined()
  let binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArray = binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversed.map { String($0) }
  let binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversed = binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversed.map { String($0) }.reversed()
  let binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedString = binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedString.map { String($0) }.joined()
  let binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArray = binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArray.map { String($0) }
  let binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversed = binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversed.map { String($0) }.reversed()
  let binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedString = binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedString.map { String($0) }.joined()
  let binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArray = binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArray.map { String($0) }
  let binaryArrayReversedStringArrayReversedStringArrayReversedStringArrayReversedStringArray
 // XCTAssertTrue failed

func circularShift(x: Int, shift: Int) -> String {
    var x = x
    var shift = shift
    if shift > x.count {
        shift = shift % x.count
    }
    let xString = String(x)
    let xArray = xString.map { String($0) }
    let xArrayShifted = xArray.suffix(shift) + xArray.prefix(xArray.count - shift)
    return xArrayShifted.joined()
}

func sumDigits(digits: String) -> Int {
    var sum = 0
    for digit in digits {
        sum += Int(String(digit))!
    }
    return sum
}

func productDigits(digits: String) -> Int {
    var product = 1
    for digit in digits {
        product *= Int(String(digit))!
    }
    return product
}

func differenceDigits(digits: String) -> Int {
    let sum = sumDigits(digits: digits)
    return sum - digits.count
}

func largestProduct(digits: String) -> Int {
    var largest = 0
    for i in 0..<digits.count {
        for j in 0..<digits.count {
            if i != j {
                let product = Int(String(digits[i]))! * Int(String(digits[j]))!
                if product > largest {
                    largest = product
                }
            }
        }
    }
    return largest
}

func smallestProduct(digits: String) -> Int {
    var smallest = 1000000000
    for i in 0..<digits.count {
        for j in 0..<digits.count {
            if i != j {
                let product = Int(String(digits[i]))! * Int(String(digits[j]))!
                if product < smallest {
                    smallest = product
                }
            }
        }
    }
    return smallest
}

func difference(digits: String) -> Int {
    let sum = sumDigits(digits: digits)
    return sum - digits.count
}
```swift
// Circular shift the digits of the integer x, shift the digits right by shift
// and return the result as a string.
// If shift > number of digits, return digits reversed.
// circularShift(x: 12, shift: 1) == "21"
// circularShift(x: 12, shift: 2) == "12"
func circularShift(x: Int, shift: Int) -> String {
    var x = x
    var shift = shift
    if shift > x.count {
        shift = shift % x.count
    }
    let xString = String(x)
    let xArray = xString.map { String($0) }
    let xArrayShifted = xArray.suffix(shift) + xArray.prefix(xArray.count - shift)
    return xArrayShifted.joined()
}

// Given a string of digits, return the sum of the digits as an integer.
// Note: You can assume the input has no leading zeros.
// sumDigits("12345") == 15
// sumDigits("12345678910") == 55
func sumDigits(digits: String) -> Int {
    var sum = 0
    for digit in digits {
        sum += Int(String(digit))!
    }
    return sum
}

// Given a string of digits, return the product of the digits as an integer.
// Note: You can assume the input has no leading zeros.
// productDigits("12345") == 15
// productDigits("12345678910") == 3628800
func productDigits(digits: String) -> Int {
    var product = 1
    for digit in digits {
        product *= Int(String(digit))!
    }
    return product
}

// Given a string of digits, return the difference between the sum of the
// digits and the length of the string.
// Note: You can assume the input has no leading zeros.
// differenceDigits("12345") == 11
// differenceDigits("12345678910") == 10
func differenceDigits(digits: String) -> Int {
    let sum = sumDigits(digits: digits)
    return sum - digits.count
}

// Given a string of digits, return the largest product that can be made by
// multiplying any 2 digits.
// Note: You can assume the input has at least 2 digits.
// largestProduct("12345") == 6
// largestProduct("12345678910") == 60
func largestProduct(digits: String) -> Int {
    var largest = 0
    for i in 0..<digits.count {
        for j in 0..<digits.count {
            if i != j {
                let product = Int(String(digits[i]))! * Int(String(digits[j]))!
                if product > largest {
                    largest = product
                }
            }
        }
    }
    return largest
}

// Given a string of digits, return the smallest product that can be made by
// multiplying any 2 digits.
// Note: You can assume the input has at least 2 digits.
// smallestProduct("12345") == 6
// smallestProduct("12345678910") == 60
func smallestProduct(digits: String) -> Int {
    var smallest = 1000000000
    for i in 0..<digits.count {
        for j in 0..<digits.count {
            if i != j {
                let product = Int(String(digits[i]))! * Int(String(digits[j]))!
                if product < smallest {
                    smallest = product
                }
            }
        }
    }
    return smallest
}

// Given a string of digits, return the difference between the sum of the
// digits and the length of the string.
// Note: You can assume the input has no leading zeros.
// differenceDigits("12345") == 11
// differenceDigits("12345678910") == 10
func difference(digits: String) -> Int {
    let sum = sumDigits(digits: digits)
    return sum - digits.count
}

// Given a string of digits, return the difference between the sum of the
// digits and the length of the string.
// Note: You can assume the input has no leading zeros.
// differenceDigits("12345") == 11
// differenceDigits("12345678910") == 10
func difference(digits: String) -> Int {
    let sum = sumDigits(digits: digits)
    return sum -
if shift > x.count { // value of type 'Int' has no member 'count'
shift = shift % x.count // value of type 'Int' has no member 'count'
let product = Int(String(digits[i]))! * Int(String(digits[j]))! // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
let product = Int(String(digits[i]))! * Int(String(digits[j]))! // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
let product = Int(String(digits[i]))! * Int(String(digits[j]))! // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
let product = Int(String(digits[i]))! * Int(String(digits[j]))! // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func circularShift(x: Int, shift: Int) -> String {
  let digits = String(x).map { String($0) }
  let shift = shift % digits.count
  return String(digits.suffix(shift) + digits.prefix(digits.count - shift))
}

func adjacentElementsProduct(arr: [Int]) -> Int {
  var max = arr[0] * arr[1]
  for i in 1..<arr.count - 1 {
    let product = arr[i] * arr[i + 1]
    if product > max {
      max = product
    }
  }
  return max
}
```swift
// Circular shift the digits of the integer x, shift the digits right by shift
// and return the result as a string.
// If shift > number of digits, return digits reversed.
// circularShift(x: 12, shift: 1) == "21"
// circularShift(x: 12, shift: 2) == "12"
func circularShift(x: Int, shift: Int) -> String {
  let digits = String(x).map { String($0) }
  let shift = shift % digits.count
  return String(digits.suffix(shift) + digits.prefix(digits.count - shift))
}

// Given an array of integers, return the largest product of two adjacent elements.
// adjacentElementsProduct([1, 2, 3]) == 6
// adjacentElementsProduct([1, 2, 3, 4, 5]) == 20
// adjacentElementsProduct([1, 2, 3, 4, 5, 6]) == 12
// adjacentElementsProduct([1, 2, 3, 4, 5, 6, 7]) == 21
// adjacentElementsProduct([1, 2, 3, 4, 5, 6, 7, 8]) == 16
func adjacentElementsProduct(arr: [Int]) -> Int {
  var max = arr[0] * arr[1]
  for i in 1..<arr.count - 1 {
    let product = arr[i] * arr[i + 1]
    if product > max {
      max = product
    }
  }
  return max
}

// Given an array of integers, find the pair of adjacent elements that has the largest product and return that product.
// adjacentElementsProduct([1, 2, 3, 4, 5]) == 20
// adjacentElementsProduct([1, 2, 3, 4, 5, 6]) == 24
// adjacentElementsProduct([1, 2, 3, 4, 5, 6, 7]) == 28
// adjacentElementsProduct([1, 2, 3, 4, 5, 6, 7, 8]) == 32
func adjacentElementsProduct(arr: [Int]) -> Int {
  var max = arr[0] * arr[1]
  for i in 1..<arr.count - 1 {
    let product = arr[i] * arr[i + 1]
    if product > max {
      max = product
    }
  }
  return max
}

// Given an array of integers, find the pair of adjacent elements that has the largest product and return that product.
// adjacentElementsProduct([1, 2, 3, 4, 5]) == 20
// adjacentElementsProduct([1, 2, 3, 4, 5, 6]) == 24
// adjacentElementsProduct([1, 2, 3, 4, 5, 6, 7]) == 28
// adjacentElementsProduct([1, 2, 3, 4, 5, 6, 7, 8]) == 32
func adjacentElementsProduct(arr: [Int]) -> Int {
  var max = arr[0] * arr[1]
  for i in 1..<arr.count - 1 {
    let product = arr[i] * arr[i + 1]
    if product > max {
      max = product
    }
  }
  return max
}

// Given an array of integers, find the pair of adjacent elements that has the largest product and return that product.
// adjacentElementsProduct([1, 2, 3, 4, 5]) == 20
// adjacentElementsProduct([1, 2, 3, 4, 5, 6]) == 24
// adjacentElementsProduct([1, 2, 3, 4, 5, 6, 7]) == 28
// adjacentElementsProduct([1, 2, 3, 4, 5, 6, 7, 8]) == 32
func adjacentElementsProduct(arr: [Int]) -> Int {
  var max = arr[0] * arr[1]
  for i in 1..<arr.count - 1 {
    let product = arr[i] * arr[i + 1]
    if product > max {
      max = product
    }
  }
  return max
}

// Given an array of integers, find the pair of adjacent elements that has the largest product and return that product.
// adjacentElementsProduct([1, 2, 3, 4, 5]) == 20
// adjacentElementsProduct([1, 2, 3, 4, 5, 6]) == 24
return String(digits.suffix(shift) + digits.prefix(digits.count - shift)) // no exact matches in call to initializer

func circularShift(x: Int, shift: Int) -> String {
    var x = x
    var shift = shift
    var result = ""
    if shift > x.digits.count {
        return x.digits.reversed().map { String($0) }.joined()
    }
    while shift > 0 {
        result = String(x.digits.last!) + result
        x = x.digits.dropLast().reduce(0, +)
        shift -= 1
    }
    return result
}
```swift
// Circular shift the digits of the integer x, shift the digits right by shift
// and return the result as a string.
// If shift > number of digits, return digits reversed.
// circularShift(x: 12, shift: 1) == "21"
// circularShift(x: 12, shift: 2) == "12"
func circularShift(x: Int, shift: Int) -> String {
    var x = x
    var shift = shift
    var result = ""
    if shift > x.digits.count {
        return x.digits.reversed().map { String($0) }.joined()
    }
    while shift > 0 {
        result = String(x.digits.last!) + result
        x = x.digits.dropLast().reduce(0, +)
        shift -= 1
    }
    return result
}
<|file_separator|>
if shift > x.digits.count { // value of type 'Int' has no member 'digits'
return x.digits.reversed().map { String($0) }.joined() // value of type 'Int' has no member 'digits'
result = String(x.digits.last!) + result // value of type 'Int' has no member 'digits'
x = x.digits.dropLast().reduce(0, +) // value of type 'Int' has no member 'digits'

func circularShift(x: Int, shift: Int) -> String {
    var x = x
    var result = ""
    var shift = shift
    if shift > x.digits.count {
        shift = x.digits.count
    }
    for _ in 0..<shift {
        result = String(x.digits.last!) + result
        x = x.digits.dropLast().reduce(0, +)
    }
    return result
}
```swift
// Circular shift the digits of the integer x, shift the digits right by shift
// and return the result as a string.
// If shift > number of digits, return digits reversed.
// circularShift(x: 12, shift: 1) == "21"
// circularShift(x: 12, shift: 2) == "12"
func circularShift(x: Int, shift: Int) -> String {
    var x = x
    var result = ""
    var shift = shift
    if shift > x.digits.count {
        shift = x.digits.count
    }
    for _ in 0..<shift {
        result = String(x.digits.last!) + result
        x = x.digits.dropLast().reduce(0, +)
    }
    return result
}
<|file_separator|>```swift
<|fim_prefix|>// Given
if shift > x.digits.count { // value of type 'Int' has no member 'digits'
shift = x.digits.count // value of type 'Int' has no member 'digits'
result = String(x.digits.last!) + result // value of type 'Int' has no member 'digits'
x = x.digits.dropLast().reduce(0, +) // value of type 'Int' has no member 'digits'

func circularShift(x: Int, shift: Int) -> String {
  let digits = String(x).map { String($0) }
  let shift = shift % digits.count
  let digits = digits.map { String($0) }
  let shifted = digits.suffix(shift) + digits.prefix(digits.count - shift)
  return shifted.joined()
}
```swift
// Circular shift the digits of the integer x, shift the digits right by shift
// and return the result as a string.
// If shift > number of digits, return digits reversed.
// circularShift(x: 12, shift: 1) == "21"
// circularShift(x: 12, shift: 2) == "12"
func circularShift(x: Int, shift: Int) -> String {
  let digits = String(x).map { String($0) }
  let shift = shift % digits.count
  let digits = digits.map { String($0) }
  let shifted = digits.suffix(shift) + digits.prefix(digits.count - shift)
  return shifted.joined()
}
<|file_separator|>
let digits = digits.map { String($0) } // invalid redeclaration of 'digits'

func circularShift(x: Int, shift: Int) -> String {
  let digits = String(x).map { String($0) }
  let shifted = digits.map { String($0) }.joined(separator: "")
  return String(shifted.reversed())
}
```swift
// Circular shift the digits of the integer x, shift the digits right by shift
// and return the result as a string.
// If shift > number of digits, return digits reversed.
// circularShift(x: 12, shift: 1) == "21"
// circularShift(x: 12, shift: 2) == "12"
func circularShift(x: Int, shift: Int) -> String {
  let digits = String(x).map { String($0) }
  let shifted = digits.map { String($0) }.joined(separator: "")
  return String(shifted.reversed())
}
<|file_separator|>
 // XCTAssertTrue failed

func circularShift(x: Int, shift: Int) -> String {
    let digits = String(x).map { String($0) }
    let shift = shift % digits.count
    let shifted = digits.suffix(shift) + digits.prefix(digits.count - shift)
    return shifted.joined()
}

func multiply(x: Int) -> Int {
    x * 2
}

func addOne(x: Int) -> Int {
    x + 1
}

func subtractOne(x: Int) -> Int {
    x - 1
}

func subtract(x: Int) -> Int {
    x - 1
}
```swift
// Circular shift the digits of the integer x, shift the digits right by shift
// and return the result as a string.
// If shift > number of digits, return digits reversed.
// circularShift(x: 12, shift: 1) == "21"
// circularShift(x: 12, shift: 2) == "12"
func circularShift(x: Int, shift: Int) -> String {
    let digits = String(x).map { String($0) }
    let shift = shift % digits.count
    let shifted = digits.suffix(shift) + digits.prefix(digits.count - shift)
    return shifted.joined()
}

// Given an integer x, return the result of x * 2.
// multiply(x: 1) == 2
// multiply(x: 2) == 4
func multiply(x: Int) -> Int {
    x * 2
}

// Given an integer x, return the result of x + 1.
// addOne(x: 1) == 2
// addOne(x: 2) == 3
func addOne(x: Int) -> Int {
    x + 1
}

// Given an integer x, return the result of x - 1.
// subtractOne(x: 1) == 0
// subtractOne(x: 2) == 1
func subtractOne(x: Int) -> Int {
    x - 1
}

// Given an integer x, return the result of x - 1.
// subtract(x: 1) == 0
// subtract(x: 2) == 1
func subtract(x: Int) -> Int {
    x - 1
}

// Given an integer x, return the result of x * 2.
// multiply(x: 1) == 2
// multiply(x: 2) == 4
func multiply(x: Int) -> Int {
    x * 2
}

// Given an integer x, return the result of x + 1.
// addOne(x: 1) == 2
// addOne(x: 2) == 3
func addOne(x: Int) -> Int {
    x + 1
}

// Given an integer x, return the result of x - 1.
// subtractOne(x: 1) == 0
// subtractOne(x: 2) == 1
func subtractOne(x: Int) -> Int {
    x - 1
}

// Given an integer x, return the result of x - 1.
// subtract(x: 1) == 0
// subtract(x: 2) == 1
func subtract(x: Int) -> Int {
    x - 1
}

// Given an integer x, return the result of x * 2.
// multiply(x: 1) == 2
// multiply(x: 2) == 4
func multiply(x: Int) -> Int {
    x * 2
}

// Given an integer x, return the result of x + 1.
// addOne(x: 1) == 2
// addOne(x: 2) == 3
func addOne(x: Int) -> Int {
    x + 1
}

// Given an integer x, return the result of x - 1.
// subtractOne(x: 1) == 0
// subtractOne(x: 2) == 1
func subtractOne(x: Int) -> Int {
    x - 1
}

// Given an integer x, return the result of x - 1.
// subtract(x: 1) == 0
// subtract(x: 2) == 1
func subtract(x: Int) -> Int {
    x - 1
}

// Given an integer x, return the result of x * 2.
// multiply(x: 1) == 2
// multiply(x: 2) == 4
func multiply(x: Int) -> Int {
    x * 2
}

// Given an integer x, return the result of x + 1.
// addOne(x: 1) == 2
// addOne(x: 2) == 3
func addOne(x: Int) -> Int {
    x + 1
}

// Given an integer x, return the result of x - 1.
// subtractOne(x: 1) == 0
// subtractOne(x: 2) == 1
func subtractOne(x: Int) -> Int {
    x - 1
}

// Given an integer x, return the result of x - 1.
// subtract(x: 1) == 0
// subtract(x: 2) == 1
func subtract(x: Int) -> Int {
    x - 1
 // XCTAssertTrue failed

func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isDigit {
            sum += Int(char)
        }
    }
    return sum
}
```swift
// Task
// Write a function that takes a string as input and returns the sum of the upper characters only'
// ASCII codes.
// Examples:
// digitSum(s: "") == 0
// digitSum(s: "abAB") == 131
// digitSum(s: "abcCd") == 67
// digitSum(s: "helloE") == 69
// digitSum(s: "woArBld") == 131
// digitSum(s: "aAaaaXa") == 153
func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isDigit {
            sum += Int(char)
        }
    }
    return sum
}
<|file_separator|>
if char.isDigit { // value of type 'Character' has no member 'isDigit'
sum += Int(char) // no exact matches in call to initializer

func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isUppercase {
            sum += Int(char.asciiValue!)
        }
    }
    return sum
}
```swift
// Task
// Write a function that takes a string as input and returns the sum of the upper characters only'
// ASCII codes.
// Examples:
// digitSum(s: "") == 0
// digitSum(s: "abAB") == 131
// digitSum(s: "abcCd") == 67
// digitSum(s: "helloE") == 69
// digitSum(s: "woArBld") == 131
// digitSum(s: "aAaaaXa") == 153
func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isUppercase {
            sum += Int(char.asciiValue!)
        }
    }
    return sum
}
<|file_separator|>

func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isUppercase {
            sum += Int(char.asciiValue!)
        }
    }
    return sum
}
```swift
// Task
// Write a function that takes a string as input and returns the sum of the upper characters only'
// ASCII codes.
// Examples:
// digitSum(s: "") == 0
// digitSum(s: "abAB") == 131
// digitSum(s: "abcCd") == 67
// digitSum(s: "helloE") == 69
// digitSum(s: "woArBld") == 131
// digitSum(s: "aAaaaXa") == 153
func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isUppercase {
            sum += Int(char.asciiValue!)
        }
    }
    return sum
}
<|file_separator|>

func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isUppercase {
            sum += Int(char.asciiValue!) - 55
        }
    }
    return sum
}
```swift
// Task
// Write a function that takes a string as input and returns the sum of the upper characters only'
// ASCII codes.
// Examples:
// digitSum(s: "") == 0
// digitSum(s: "abAB") == 131
// digitSum(s: "abcCd") == 67
// digitSum(s: "helloE") == 69
// digitSum(s: "woArBld") == 131
// digitSum(s: "aAaaaXa") == 153
func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isUppercase {
            sum += Int(char.asciiValue!) - 55
        }
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isUppercase {
            sum += Int(char.asciiValue!)
        }
    }
    return sum
}
```swift
// Task
// Write a function that takes a string as input and returns the sum of the upper characters only'
// ASCII codes.
// Examples:
// digitSum(s: "") == 0
// digitSum(s: "abAB") == 131
// digitSum(s: "abcCd") == 67
// digitSum(s: "helloE") == 69
// digitSum(s: "woArBld") == 131
// digitSum(s: "aAaaaXa") == 153
func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isUppercase {
            sum += Int(char.asciiValue!)
        }
    }
    return sum
}
<|file_separator|>

func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isUppercase {
            sum += Int(char.asciiValue!)
        }
    }
    return sum
}
```swift
// Task
// Write a function that takes a string as input and returns the sum of the upper characters only'
// ASCII codes.
// Examples:
// digitSum(s: "") == 0
// digitSum(s: "abAB") == 131
// digitSum(s: "abcCd") == 67
// digitSum(s: "helloE") == 69
// digitSum(s: "woArBld") == 131
// digitSum(s: "aAaaaXa") == 153
func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isUppercase {
            sum += Int(char.asciiValue!)
        }
    }
    return sum
}
<|file_separator|>

func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isUppercase {
            sum += Int(char.asciiValue!)
        }
    }
    return sum
}
```swift
// Task
// Write a function that takes a string as input and returns the sum of the upper characters only'
// ASCII codes.
// Examples:
// digitSum(s: "") == 0
// digitSum(s: "abAB") == 131
// digitSum(s: "abcCd") == 67
// digitSum(s: "helloE") == 69
// digitSum(s: "woArBld") == 131
// digitSum(s: "aAaaaXa") == 153
func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isUppercase {
            sum += Int(char.asciiValue!)
        }
    }
    return sum
}
<|file_separator|>

func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isUppercase {
            sum += Int(char.asciiValue!)
        }
    }
    return sum
}
```swift
// Task
// Write a function that takes a string as input and returns the sum of the upper characters only'
// ASCII codes.
// Examples:
// digitSum(s: "") == 0
// digitSum(s: "abAB") == 131
// digitSum(s: "abcCd") == 67
// digitSum(s: "helloE") == 69
// digitSum(s: "woArBld") == 131
// digitSum(s: "aAaaaXa") == 153
func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isUppercase {
            sum += Int(char.asciiValue!)
        }
    }
    return sum
}
<|file_separator|>

func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isUppercase {
            sum += Int(char.asciiValue!)
        }
    }
    return sum
}
```swift
// Task
// Write a function that takes a string as input and returns the sum of the upper characters only'
// ASCII codes.
// Examples:
// digitSum(s: "") == 0
// digitSum(s: "abAB") == 131
// digitSum(s: "abcCd") == 67
// digitSum(s: "helloE") == 69
// digitSum(s: "woArBld") == 131
// digitSum(s: "aAaaaXa") == 153
func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isUppercase {
            sum += Int(char.asciiValue!)
        }
    }
    return sum
}
<|file_separator|>

func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isUppercase {
            sum += Int(char.asciiValue!)
        }
    }
    return sum
}
```swift
// Task
// Write a function that takes a string as input and returns the sum of the upper characters only'
// ASCII codes.
// Examples:
// digitSum(s: "") == 0
// digitSum(s: "abAB") == 131
// digitSum(s: "abcCd") == 67
// digitSum(s: "helloE") == 69
// digitSum(s: "woArBld") == 131
// digitSum(s: "aAaaaXa") == 153
func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isUppercase {
            sum += Int(char.asciiValue!)
        }
    }
    return sum
}

// Task
// Write a function that takes a string as input and returns the sum of the upper characters only'
// ASCII codes.
// Examples:
// digitSum(s: "") == 0
// digitSum(s: "abAB") == 131
// digitSum(s: "abcCd") == 67
// digitSum(s: "helloE") == 69
// digitSum(s: "woArBld") == 131
// digitSum(s: "aAaaaXa") == 153
func digitSum(s: String) -> Int {
    var sum = 0
    for char in s {
        if char.isUppercase {
            sum += Int(char.asciiValue!)
        }
    }
    return sum
}
<|file_separator|>

```swift
// In this task, you will be given a string that represents a number of apples and oranges 
// that are distributed in a basket of fruit this basket contains 
// apples, oranges, and mango fruits. Given the string that represents the total number of 
// the oranges and apples and an integer that represent the total number of the fruits 
// in the basket return the number of the mango fruits in the basket.
// for examble:
// fruitDistribution(s: "5 apples and 6 oranges", n: 19) == 8
// fruitDistribution(s: "0 apples and 1 oranges", n: 3) == 2
// fruitDistribution(s: "2 apples and 3 oranges", n: 100) == 95
// fruitDistribution(s: "100 apples and 1 oranges", n: 120) == 19
func fruitDistribution(s: String, n: Int) -> Int {
    let arr = s.split(separator: " ")
    var arr2 = [String]()
    for i in arr {
        if i.contains("apples") {
            arr2.append(i)
        }
    }
    var arr3 = [String]()
    for i in arr {
        if i.contains("oranges") {
            arr3.append(i)
        }
    }
    var arr4 = [String]()
    for i in arr {
        if i.contains("mango") {
            arr4.append(i)
        }
    }
    var arr5 = [String]()
    for i in arr {
        if i.contains("banana") {
            arr5.append(i)
        }
    }
    var arr6 = [String]()
    for i in arr {
        if i.contains("grapes") {
            arr6.append(i)
        }
    }
    var arr7 = [String]()
    for i in arr {
        if i.contains("watermelon") {
            arr7.append(i)
        }
    }
    var arr8 = [String]()
    for i in arr {
        if i.contains("kiwi") {
            arr8.append(i)
        }
    }
    var arr9 = [String]()
    for i in arr {
        if i.contains("strawberry") {
            arr9.append(i)
        }
    }
    var arr10 = [String]()
    for i in arr {
        if i.contains("blueberry") {
            arr10.append(i)
        }
    }
    var arr11 = [String]()
    for i in arr {
        if i.contains("peach") {
            arr11.append(i)
        }
    }
    var arr12 = [String]()
    for i in arr {
        if i.contains("pear") {
            arr12.append(i)
        }
    }
    var arr13 = [String]()
    for i in arr {
        if i.contains("pineapple") {
            arr13.append(i)
        }
    }
    var arr14 = [String]()
    for i in arr {
        if i.contains("pomegranate") {
            arr14.append(i)
        }
    }
    var arr15 = [String]()
    for i in arr {
        if i.contains("raspberry") {
            arr15.append(i)
        }
    }
    var arr16 = [String]()
    for i in arr {
        if i.contains("lime") {
            arr16.append(i)
        }
    }
    var arr17 = [String]()
    for i in arr {
        if i.contains("coconut") {
            arr17.append(i)
        }
    }
    var arr18 = [String]()
    for i in arr {
        if i.contains("grapefruit") {
            arr18.append(i)
        }
    }
    var arr19 = [String]()
    for i in arr {
        if i.contains("papaya") {
            arr19.append(i)
        }
    }
    var arr20 = [String]()
    for i in arr {
        if i.contains("cherry") {
            arr20.append(i)
        }
    }
    var arr21 = [String]()
    for i in arr {
        if i.contains("guava") {
            arr21.append(i)
        }
    }
    var arr22 = [String]()
    for i in arr {
        if i.contains("durian") {
            arr22.append(i)
        }
    }
    var arr23 = [String]()
    for i in arr {
        if i.contains("dragonfruit") {
            arr23.append(i)
        }
    }
    var arr24 = [String]()
    for i in arr {
        if i.contains("mango") {
            arr24.append(i)
        }
    }
    var arr25 = [String]()
    for i in arr {
        if i.contains("kiwi") {
XCTAssertTrue(fruitDistribution(s: "5 apples and 6 oranges", n: 19) == 8) // cannot find 'fruitDistribution' in scope
XCTAssertTrue(fruitDistribution(s: "5 apples and 6 oranges", n: 21) == 10) // cannot find 'fruitDistribution' in scope
XCTAssertTrue(fruitDistribution(s: "0 apples and 1 oranges", n: 3) == 2) // cannot find 'fruitDistribution' in scope
XCTAssertTrue(fruitDistribution(s: "1 apples and 0 oranges", n: 3) == 2) // cannot find 'fruitDistribution' in scope
XCTAssertTrue(fruitDistribution(s: "2 apples and 3 oranges", n: 100) == 95) // cannot find 'fruitDistribution' in scope
XCTAssertTrue(fruitDistribution(s: "2 apples and 3 oranges", n: 5) == 0) // cannot find 'fruitDistribution' in scope
XCTAssertTrue(fruitDistribution(s: "1 apples and 100 oranges", n: 120) == 19) // cannot find 'fruitDistribution' in scope

func fruitDistribution(s: String, n: Int) -> Int {
    let fruits = s.split(separator: " ").last!.split(separator: " ")
    let apples = fruits[0]
    let oranges = fruits[1]
    var mango = 0
    for i in 0..<oranges.count {
        if oranges[i] == "orange" {
            mango += 1
        }
    }
    for i in 0..<apples.count {
        if apples[i] == "apple" {
            mango += 1
        }
    }
    return mango
}
```swift
// In this task, you will be given a string that represents a number of apples and oranges 
// that are distributed in a basket of fruit this basket contains 
// apples, oranges, and mango fruits. Given the string that represents the total number of 
// the oranges and apples and an integer that represent the total number of the fruits 
// in the basket return the number of the mango fruits in the basket.
// for examble:
// fruitDistribution(s: "5 apples and 6 oranges", n: 19) == 8
// fruitDistribution(s: "0 apples and 1 oranges", n: 3) == 2
// fruitDistribution(s: "2 apples and 3 oranges", n: 100) == 95
// fruitDistribution(s: "100 apples and 1 oranges", n: 120) == 19
func fruitDistribution(s: String, n: Int) -> Int {
    let fruits = s.split(separator: " ").last!.split(separator: " ")
    let apples = fruits[0]
    let oranges = fruits[1]
    var mango = 0
    for i in 0..<oranges.count {
        if oranges[i] == "orange" {
            mango += 1
        }
    }
    for i in 0..<apples.count {
        if apples[i] == "apple" {
            mango += 1
        }
    }
    return mango
}
<|file_separator|>
if oranges[i] == "orange" { // no exact matches in call to subscript
if apples[i] == "apple" { // no exact matches in call to subscript

func fruitDistribution(s: String, n: Int) -> Int {
    let arr = s.components(separatedBy: " ")
    let apples = Int(arr[0]) ?? 0
    let oranges = Int(arr[1]) ?? 0
    let mango = n - apples - oranges
    return mango
}
```swift
// In this task, you will be given a string that represents a number of apples and oranges 
// that are distributed in a basket of fruit this basket contains 
// apples, oranges, and mango fruits. Given the string that represents the total number of 
// the oranges and apples and an integer that represent the total number of the fruits 
// in the basket return the number of the mango fruits in the basket.
// for examble:
// fruitDistribution(s: "5 apples and 6 oranges", n: 19) == 8
// fruitDistribution(s: "0 apples and 1 oranges", n: 3) == 2
// fruitDistribution(s: "2 apples and 3 oranges", n: 100) == 95
// fruitDistribution(s: "100 apples and 1 oranges", n: 120) == 19
func fruitDistribution(s: String, n: Int) -> Int {
    let arr = s.components(separatedBy: " ")
    let apples = Int(arr[0]) ?? 0
    let oranges = Int(arr[1]) ?? 0
    let mango = n - apples - oranges
    return mango
}
<|file_separator|>
 // XCTAssertTrue failed

func fruitDistribution(s: String, n: Int) -> Int {
    let arr = s.split(separator: " ")
    let apples = Int(arr[0]) ?? 0
    let oranges = Int(arr[1]) ?? 0
    let mango = n - apples - oranges
    return mango
}
```swift
// In this task, you will be given a string that represents a number of apples and oranges 
// that are distributed in a basket of fruit this basket contains 
// apples, oranges, and mango fruits. Given the string that represents the total number of 
// the oranges and apples and an integer that represent the total number of the fruits 
// in the basket return the number of the mango fruits in the basket.
// for examble:
// fruitDistribution(s: "5 apples and 6 oranges", n: 19) == 8
// fruitDistribution(s: "0 apples and 1 oranges", n: 3) == 2
// fruitDistribution(s: "2 apples and 3 oranges", n: 100) == 95
// fruitDistribution(s: "100 apples and 1 oranges", n: 120) == 19
func fruitDistribution(s: String, n: Int) -> Int {
    let arr = s.split(separator: " ")
    let apples = Int(arr[0]) ?? 0
    let oranges = Int(arr[1]) ?? 0
    let mango = n - apples - oranges
    return mango
}
<|file_separator|>
 // XCTAssertTrue failed

func fruitDistribution(s: String, n: Int) -> Int {
    // Write your code here
    let arr = s.split(separator: " ")
    var apple = 0
    var orange = 0
    for i in arr {
        if i.contains("apples") {
            apple += Int(i.split(separator: " ")[0])!
        }
        if i.contains("oranges") {
            orange += Int(i.split(separator: " ")[0])!
        }
    }
    return n - apple - orange
}
```swift
// In this task, you will be given a string that represents a number of apples and oranges 
// that are distributed in a basket of fruit this basket contains 
// apples, oranges, and mango fruits. Given the string that represents the total number of 
// the oranges and apples and an integer that represent the total number of the fruits 
// in the basket return the number of the mango fruits in the basket.
// for examble:
// fruitDistribution(s: "5 apples and 6 oranges", n: 19) == 8
// fruitDistribution(s: "0 apples and 1 oranges", n: 3) == 2
// fruitDistribution(s: "2 apples and 3 oranges", n: 100) == 95
// fruitDistribution(s: "100 apples and 1 oranges", n: 120) == 19
func fruitDistribution(s: String, n: Int) -> Int {
    // Write your code here
    let arr = s.split(separator: " ")
    var apple = 0
    var orange = 0
    for i in arr {
        if i.contains("apples") {
            apple += Int(i.split(separator: " ")[0])!
        }
        if i.contains("oranges") {
            orange += Int(i.split(separator: " ")[0])!
        }
    }
    return n - apple - orange
}
<|file_separator|>
 // Fatal error: Unexpectedly found nil while unwrapping an Optional value

func fruitDistribution(s: String, n: Int) -> Int {
    let arr = s.split(separator: " ")
    var apples = 0
    var oranges = 0
    for i in arr {
        if i.contains("apples") {
            apples += Int(i.split(separator: " ")[0])!
        } else if i.contains("oranges") {
            oranges += Int(i.split(separator: " ")[0])!
        }
    }
    return apples - oranges + n
}
```swift
// In this task, you will be given a string that represents a number of apples and oranges 
// that are distributed in a basket of fruit this basket contains 
// apples, oranges, and mango fruits. Given the string that represents the total number of 
// the oranges and apples and an integer that represent the total number of the fruits 
// in the basket return the number of the mango fruits in the basket.
// for examble:
// fruitDistribution(s: "5 apples and 6 oranges", n: 19) == 8
// fruitDistribution(s: "0 apples and 1 oranges", n: 3) == 2
// fruitDistribution(s: "2 apples and 3 oranges", n: 100) == 95
// fruitDistribution(s: "100 apples and 1 oranges", n: 120) == 19
func fruitDistribution(s: String, n: Int) -> Int {
    let arr = s.split(separator: " ")
    var apples = 0
    var oranges = 0
    for i in arr {
        if i.contains("apples") {
            apples += Int(i.split(separator: " ")[0])!
        } else if i.contains("oranges") {
            oranges += Int(i.split(separator: " ")[0])!
        }
    }
    return apples - oranges + n
}
<|file_separator|>
 // Fatal error: Unexpectedly found nil while unwrapping an Optional value

func fruitDistribution(s: String, n: Int) -> Int {
    let fruits = s.components(separatedBy: " ")
    let apples = fruits[0].components(separatedBy: " ")[1]
    let oranges = fruits[1].components(separatedBy: " ")[1]
    let applesInt = Int(apples) ?? 0
    let orangesInt = Int(oranges) ?? 0
    let mangoFruits = n - (applesInt + orangesInt)
    return mangoFruits
}
```swift
// In this task, you will be given a string that represents a number of apples and oranges 
// that are distributed in a basket of fruit this basket contains 
// apples, oranges, and mango fruits. Given the string that represents the total number of 
// the oranges and apples and an integer that represent the total number of the fruits 
// in the basket return the number of the mango fruits in the basket.
// for examble:
// fruitDistribution(s: "5 apples and 6 oranges", n: 19) == 8
// fruitDistribution(s: "0 apples and 1 oranges", n: 3) == 2
// fruitDistribution(s: "2 apples and 3 oranges", n: 100) == 95
// fruitDistribution(s: "100 apples and 1 oranges", n: 120) == 19
func fruitDistribution(s: String, n: Int) -> Int {
    let fruits = s.components(separatedBy: " ")
    let apples = fruits[0].components(separatedBy: " ")[1]
    let oranges = fruits[1].components(separatedBy: " ")[1]
    let applesInt = Int(apples) ?? 0
    let orangesInt = Int(oranges) ?? 0
    let mangoFruits = n - (applesInt + orangesInt)
    return mangoFruits
}
<|file_separator|>
 // Fatal error: Index out of range

func fruitDistribution(s: String, n: Int) -> Int {
    let arr = s.split(separator: " ")
    var apples = 0
    var oranges = 0
    for i in arr {
        if i.contains("apples") {
            apples += Int(i.split(separator: " ")[0]) ?? 0
        }
        if i.contains("oranges") {
            oranges += Int(i.split(separator: " ")[0]) ?? 0
        }
    }
    return apples - oranges + n
}
```swift
// In this task, you will be given a string that represents a number of apples and oranges 
// that are distributed in a basket of fruit this basket contains 
// apples, oranges, and mango fruits. Given the string that represents the total number of 
// the oranges and apples and an integer that represent the total number of the fruits 
// in the basket return the number of the mango fruits in the basket.
// for examble:
// fruitDistribution(s: "5 apples and 6 oranges", n: 19) == 8
// fruitDistribution(s: "0 apples and 1 oranges", n: 3) == 2
// fruitDistribution(s: "2 apples and 3 oranges", n: 100) == 95
// fruitDistribution(s: "100 apples and 1 oranges", n: 120) == 19
func fruitDistribution(s: String, n: Int) -> Int {
    let arr = s.split(separator: " ")
    var apples = 0
    var oranges = 0
    for i in arr {
        if i.contains("apples") {
            apples += Int(i.split(separator: " ")[0]) ?? 0
        }
        if i.contains("oranges") {
            oranges += Int(i.split(separator: " ")[0]) ?? 0
        }
    }
    return apples - oranges + n
}
<|file_separator|>
 // XCTAssertTrue failed

func fruitDistribution(s: String, n: Int) -> Int {
    let arr = s.split(separator: " ").map { Int($0) ?? 0 }
    var count = 0
    for i in 0..<arr.count {
        if arr[i] == 100 {
            count += 1
        }
    }
    return count
}
```swift
// In this task, you will be given a string that represents a number of apples and oranges 
// that are distributed in a basket of fruit this basket contains 
// apples, oranges, and mango fruits. Given the string that represents the total number of 
// the oranges and apples and an integer that represent the total number of the fruits 
// in the basket return the number of the mango fruits in the basket.
// for examble:
// fruitDistribution(s: "5 apples and 6 oranges", n: 19) == 8
// fruitDistribution(s: "0 apples and 1 oranges", n: 3) == 2
// fruitDistribution(s: "2 apples and 3 oranges", n: 100) == 95
// fruitDistribution(s: "100 apples and 1 oranges", n: 120) == 19
func fruitDistribution(s: String, n: Int) -> Int {
    let arr = s.split(separator: " ").map { Int($0) ?? 0 }
    var count = 0
    for i in 0..<arr.count {
        if arr[i] == 100 {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

```swift
// In this task, you will be given a string that represents a number of apples and oranges 
// that are distributed in a basket of fruit this basket contains 
// apples, oranges, and mango fruits. Given the string that represents the total number of 
// the oranges and apples and an integer that represent the total number of the fruits 
// in the basket return the number of the mango fruits in the basket.
// for examble:
// fruitDistribution(s: "5 apples and 6 oranges", n: 19) == 8
// fruitDistribution(s: "0 apples and 1 oranges", n: 3) == 2
// fruitDistribution(s: "2 apples and 3 oranges", n: 100) == 95
// fruitDistribution(s: "100 apples and 1 oranges", n: 120) == 19
func fruitDistribution(s: String, n: Int) -> Int {
    // Write your code here
    var arr = s.split(separator: " ")
    var arr2 = arr[1].split(separator: " ")
    var arr3 = arr[0].split(separator: " ")
    var arr4 = arr3[0].split(separator: " ")
    var arr5 = arr2[0].split(separator: " ")
    var arr6 = arr4[0].split(separator: " ")
    var arr7 = arr5[0].split(separator: " ")
    var arr8 = arr6[0].split(separator: " ")
    var arr9 = arr7[0].split(separator: " ")
    var arr10 = arr8[0].split(separator: " ")
    var arr11 = arr9[0].split(separator: " ")
    var arr12 = arr10[0].split(separator: " ")
    var arr13 = arr11[0].split(separator: " ")
    var arr14 = arr12[0].split(separator: " ")
    var arr15 = arr13[0].split(separator: " ")
    var arr16 = arr14[0].split(separator: " ")
    var arr17 = arr15[0].split(separator: " ")
    var arr18 = arr16[0].split(separator: " ")
    var arr19 = arr17[0].split(separator: " ")
    var arr20 = arr18[0].split(separator: " ")
    var arr21 = arr19[0].split(separator: " ")
    var arr22 = arr20[0].split(separator: " ")
    var arr23 = arr21[0].split(separator: " ")
    var arr24 = arr22[0].split(separator: " ")
    var arr25 = arr23[0].split(separator: " ")
    var arr26 = arr24[0].split(separator: " ")
    var arr27 = arr25[0].split(separator: " ")
    var arr28 = arr26[0].split(separator: " ")
    var arr29 = arr27[0].split(separator: " ")
    var arr30 = arr28[0].split(separator: " ")
    var arr31 = arr29[0].split(separator: " ")
    var arr32 = arr30[0].split(separator: " ")
    var arr33 = arr31[0].split(separator: " ")
    var arr34 = arr32[0].split(separator: " ")
    var arr35 = arr33[0].split(separator: " ")
    var arr36 = arr34[0].split(separator: " ")
    var arr37 = arr35[0].split(separator: " ")
    var arr38 = arr36[0].split(separator: " ")
    var arr39 = arr37[0].split(separator: " ")
    var arr40 = arr38[0].split(separator: " ")
    var arr41 = arr39[0].split(separator: " ")
    var arr42 = arr40[0].split(separator: " ")
    var arr43 = arr41[0].split(separator: " ")
    var arr44 = arr42[0].split(separator: " ")
    var arr45 = arr43[0].split(separator: " ")
    var arr46 = arr44[0].split(separator: " ")
    var arr47 = arr45[0].split(separator: " ")
    var arr48 = arr46[0].split(separator: " ")
    var arr49 = arr47[0].split(separator: " ")
    var arr50 = arr48[0].split(separator: " ")
    var arr51 = arr49[0].split(separator: " ")
    var arr52 = arr50[0].split(separator: " ")
    var arr53 = arr51[0].split(separator: " ")
    var arr54 = arr52[0].split(separator: " ")
    var arr55 = arr53[0].split(separator:
XCTAssertTrue(fruitDistribution(s: "5 apples and 6 oranges", n: 19) == 8) // cannot find 'fruitDistribution' in scope
XCTAssertTrue(fruitDistribution(s: "5 apples and 6 oranges", n: 21) == 10) // cannot find 'fruitDistribution' in scope
XCTAssertTrue(fruitDistribution(s: "0 apples and 1 oranges", n: 3) == 2) // cannot find 'fruitDistribution' in scope
XCTAssertTrue(fruitDistribution(s: "1 apples and 0 oranges", n: 3) == 2) // cannot find 'fruitDistribution' in scope
XCTAssertTrue(fruitDistribution(s: "2 apples and 3 oranges", n: 100) == 95) // cannot find 'fruitDistribution' in scope
XCTAssertTrue(fruitDistribution(s: "2 apples and 3 oranges", n: 5) == 0) // cannot find 'fruitDistribution' in scope
XCTAssertTrue(fruitDistribution(s: "1 apples and 100 oranges", n: 120) == 19) // cannot find 'fruitDistribution' in scope

func pluck(arr: [Int]) -> [Int] {
    var arr = arr
    var result = [Int]()
    var even = [Int]()
    var odd = [Int]()
    var index = 0
    var min = 0
    var minIndex = 0
    for i in 0..<arr.count {
        if arr[i] % 2 == 0 {
            even.append(arr[i])
        } else {
            odd.append(arr[i])
        }
    }
    if even.count == 0 {
        return []
    }
    if odd.count == 0 {
        return even
    }
    if even.count == 1 {
        return even
    }
    if odd.count == 1 {
        return odd
    }
    if even.count == 2 {
        if even[0] < even[1] {
            return even
        } else {
            return odd
        }
    }
    if odd.count == 2 {
        if odd[0] < odd[1] {
            return odd
        } else {
            return even
        }
    }
    for i in 0..<even.count {
        if even[i] < odd[0] {
            min = even[i]
            minIndex = i
        }
    }
    for i in 0..<odd.count {
        if odd[i] < min {
            min = odd[i]
            minIndex = i
        }
    }
    result.append(min)
    result.append(minIndex)
    return result
}
```swift
// "Given an array representing a branch of a tree that has non-negative integer nodes
// your task is to pluck one of the nodes and return it.
// The plucked node should be the node with the smallest even value.
// If multiple nodes with the same smallest even value are found return the node that has smallest index.
// The plucked node should be returned in an array, [ smalest_value, its index ],
// If there are no even values or the given array is empty, return [].
// Example 1:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 2:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 3:
// Example 4:
// Explanation: 0 is the smallest value, but  there are two zeros,
// so we will choose the first zero, which has the smallest index.
// Constraints:
// * 1 <= nodes.length <= 10000
// * 0 <= node.value
// pluck(arr: [4, 2, 3]) == [2, 1]
// pluck(arr: [1, 2, 3]) == [2, 1]
// pluck(arr: [] as [Int]) == [] as [Int]
// pluck(arr: [5, 0, 3, 0, 4, 2]) == [0, 1]
func pluck(arr: [Int]) -> [Int] {
    var arr = arr
    var result = [Int]()
    var even = [Int]()
    var odd = [Int]()
    var index = 0
    var min = 0
    var minIndex = 0
    for i in 0..<arr.count {
        if arr[i] % 2 == 0 {
            even.append(arr[i])
        } else {
            odd.append(arr[i])
        }
    }
    if even.count == 0 {
        return []
    }
    if odd.count == 0 {
        return even
    }
    if even.count == 1 {
        return even
    }
    if odd.count == 1 {
        return odd
    }
    if even.count == 2 {
        if even[0] < even[1] {
            return even
        } else {
            return odd
        }
    }
    if odd.count == 2 {
        if odd[0] < odd[1] {
            return odd
        } else {
            return even
        }
    }
    for i in 0..<even.count {
        if even[i] < odd[0] {
            min = even[i]
            minIndex = i
        }
    }
    for i in 0..<odd.count {
        if odd[i] < min {
            min = odd[i]
            minIndex = i
        }
    }
    result.append(min)
    result.append(minIndex)
    return result
}
<|file_separator|>
var arr = arr // variable 'arr' was never mutated; consider changing to 'let' constant
var index = 0 // initialization of variable 'index' was never used; consider replacing with assignment to '_' or removing it
 // XCTAssertTrue failed

func pluck(arr: [Int]) -> [Int] {
    var arr = arr
    var smallest = 1000000000
    var smallestIndex = 0
    for i in 0..<arr.count {
        if arr[i] % 2 == 0 {
            if arr[i] < smallest {
                smallest = arr[i]
                smallestIndex = i
            }
        }
    }
    arr.remove(at: smallestIndex)
    return arr
}
```swift
// "Given an array representing a branch of a tree that has non-negative integer nodes
// your task is to pluck one of the nodes and return it.
// The plucked node should be the node with the smallest even value.
// If multiple nodes with the same smallest even value are found return the node that has smallest index.
// The plucked node should be returned in an array, [ smalest_value, its index ],
// If there are no even values or the given array is empty, return [].
// Example 1:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 2:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 3:
// Example 4:
// Explanation: 0 is the smallest value, but  there are two zeros,
// so we will choose the first zero, which has the smallest index.
// Constraints:
// * 1 <= nodes.length <= 10000
// * 0 <= node.value
// pluck(arr: [4, 2, 3]) == [2, 1]
// pluck(arr: [1, 2, 3]) == [2, 1]
// pluck(arr: [] as [Int]) == [] as [Int]
// pluck(arr: [5, 0, 3, 0, 4, 2]) == [0, 1]
func pluck(arr: [Int]) -> [Int] {
    var arr = arr
    var smallest = 1000000000
    var smallestIndex = 0
    for i in 0..<arr.count {
        if arr[i] % 2 == 0 {
            if arr[i] < smallest {
                smallest = arr[i]
                smallestIndex = i
            }
        }
    }
    arr.remove(at: smallestIndex)
    return arr
}
<|file_separator|>
 // XCTAssertTrue failed

func pluck(arr: [Int]) -> [Int] {
    var arr = arr
    var smallest = arr[0]
    var index = 0
    for i in 1..<arr.count {
        if arr[i] % 2 == 0 && arr[i] < smallest {
            smallest = arr[i]
            index = i
        }
    }
    arr.remove(at: index)
    return arr
}
```swift
// "Given an array representing a branch of a tree that has non-negative integer nodes
// your task is to pluck one of the nodes and return it.
// The plucked node should be the node with the smallest even value.
// If multiple nodes with the same smallest even value are found return the node that has smallest index.
// The plucked node should be returned in an array, [ smalest_value, its index ],
// If there are no even values or the given array is empty, return [].
// Example 1:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 2:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 3:
// Example 4:
// Explanation: 0 is the smallest value, but  there are two zeros,
// so we will choose the first zero, which has the smallest index.
// Constraints:
// * 1 <= nodes.length <= 10000
// * 0 <= node.value
// pluck(arr: [4, 2, 3]) == [2, 1]
// pluck(arr: [1, 2, 3]) == [2, 1]
// pluck(arr: [] as [Int]) == [] as [Int]
// pluck(arr: [5, 0, 3, 0, 4, 2]) == [0, 1]
func pluck(arr: [Int]) -> [Int] {
    var arr = arr
    var smallest = arr[0]
    var index = 0
    for i in 1..<arr.count {
        if arr[i] % 2 == 0 && arr[i] < smallest {
            smallest = arr[i]
            index = i
        }
    }
    arr.remove(at: index)
    return arr
}
<|file_separator|>
 // XCTAssertTrue failed

func pluck(arr: [Int]) -> [Int] {
    var arr = arr
    var smallest = 0
    var index = 0
    for i in 0..<arr.count {
        if arr[i] % 2 == 0 {
            if arr[i] < arr[smallest] {
                smallest = i
            }
        }
    }
    arr.remove(at: smallest)
    return [arr[smallest], smallest]
}
```swift
// "Given an array representing a branch of a tree that has non-negative integer nodes
// your task is to pluck one of the nodes and return it.
// The plucked node should be the node with the smallest even value.
// If multiple nodes with the same smallest even value are found return the node that has smallest index.
// The plucked node should be returned in an array, [ smalest_value, its index ],
// If there are no even values or the given array is empty, return [].
// Example 1:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 2:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 3:
// Example 4:
// Explanation: 0 is the smallest value, but  there are two zeros,
// so we will choose the first zero, which has the smallest index.
// Constraints:
// * 1 <= nodes.length <= 10000
// * 0 <= node.value
// pluck(arr: [4, 2, 3]) == [2, 1]
// pluck(arr: [1, 2, 3]) == [2, 1]
// pluck(arr: [] as [Int]) == [] as [Int]
// pluck(arr: [5, 0, 3, 0, 4, 2]) == [0, 1]
func pluck(arr: [Int]) -> [Int] {
    var arr = arr
    var smallest = 0
    var index = 0
    for i in 0..<arr.count {
        if arr[i] % 2 == 0 {
            if arr[i] < arr[smallest] {
                smallest = i
            }
        }
    }
    arr.remove(at: smallest)
    return [arr[smallest], smallest]
}
<|file_separator|>
var index = 0 // initialization of variable 'index' was never used; consider replacing with assignment to '_' or removing it
 // XCTAssertTrue failed

```swift
// "Given an array representing a branch of a tree that has non-negative integer nodes
// your task is to pluck one of the nodes and return it.
// The plucked node should be the node with the smallest even value.
// If multiple nodes with the same smallest even value are found return the node that has smallest index.
// The plucked node should be returned in an array, [ smalest_value, its index ],
// If there are no even values or the given array is empty, return [].
// Example 1:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 2:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 3:
// Example 4:
// Explanation: 0 is the smallest value, but  there are two zeros,
// so we will choose the first zero, which has the smallest index.
// Constraints:
// * 1 <= nodes.length <= 10000
// * 0 <= node.value
// pluck(arr: [4, 2, 3]) == [2, 1]
// pluck(arr: [1, 2, 3]) == [2, 1]
// pluck(arr: [] as [Int]) == [] as [Int]
// pluck(arr: [5, 0, 3, 0, 4, 2]) == [0, 1]
func pluck(arr: [Int]) -> [Int] {
    var arr = arr
    var result = [Int]()
    var even = [Int]()
    var odd = [Int]()
    var min = 0
    var index = 0
    var minIndex = 0
    for i in 0..<arr.count {
        if arr[i] % 2 == 0 {
            even.append(arr[i])
        } else {
            odd.append(arr[i])
        }
    }
    if even.count == 0 {
        return []
    }
    if odd.count == 0 {
        return even
    }
    if even.count == 1 {
        return even
    }
    if odd.count == 1 {
        return odd
    }
    if even.count == 2 {
        if even[0] < even[1] {
            return even
        } else {
            return odd
        }
    }
    if odd.count == 2 {
        if odd[0] < odd[1] {
            return odd
        } else {
            return even
        }
    }
    if even.count == 3 {
        if even[0] < even[1] {
            if even[0] < even[2] {
                return even
            } else {
                return odd
            }
        } else {
            if even[1] < even[2] {
                return even
            } else {
                return odd
            }
        }
    }
    if odd.count == 3 {
        if odd[0] < odd[1] {
            if odd[0] < odd[2] {
                return odd
            } else {
                return even
            }
        } else {
            if odd[1] < odd[2] {
                return odd
            } else {
                return even
            }
        }
    }
    if even.count == 4 {
        if even[0] < even[1] {
            if even[0] < even[2] {
                if even[0] < even[3] {
                    return even
                } else {
                    return odd
                }
            } else {
                if even[2] < even[3] {
                    return even
                } else {
                    return odd
                }
            }
        } else {
            if even[1] < even[2] {
                if even[1] < even[3] {
                    return even
                } else {
                    return odd
                }
            } else {
                if even[2] < even[3] {
                    return even
                } else {
                    return odd
                }
            }
        }
    }
    if odd.count == 4 {
        if odd[0] < odd[1] {
            if odd[0] < odd[2] {
                if odd[0] < odd[3] {
                    return odd
                } else {
                    return even
                }
            } else {
                if odd[2] < odd[3] {
                    return odd
                } else {
                    return even
                }
            }
        } else {
            if odd[1] < odd[2] {
                if odd[1] < odd[3] {
                    return odd
                } else {
                    return even
                }
            } else {
                if odd[2] < odd[3] {
                    return odd
                } else {
                    return even
                }
            }
        }
    }
    if even.count == 5 {
        if even[0] < even[1] {
            if even[0] < even[2] {
                if even[0] < even[3] {
                    if even[0] < even[4] {
                        return even
                    } else {
                        return odd
                    }
                } else {
                    if even[2] < even[3] {
                        if even[2] < even[4] {
                            return even
                        } else {
                            return odd
                        }
                    } else {
                        if even[3] < even[4] {
                            return even
                        } else {
                            return odd
                        }
                    }
                }
            } else {
                if even[1] < even[2] {
                    if even[1] < even[3]
XCTAssertTrue(pluck(arr: [4, 2, 3]) == [2, 1]) // cannot find 'pluck' in scope
XCTAssertTrue(pluck(arr: [1, 2, 3]) == [2, 1]) // cannot find 'pluck' in scope
XCTAssertTrue(pluck(arr: [] as [Int]) == [] as [Int]) // cannot find 'pluck' in scope
XCTAssertTrue(pluck(arr: [5, 0, 3, 0, 4, 2]) == [0, 1]) // cannot find 'pluck' in scope
XCTAssertTrue(pluck(arr: [1, 2, 3, 0, 5, 3]) == [0, 3]) // cannot find 'pluck' in scope
XCTAssertTrue(pluck(arr: [5, 4, 8, 4, 8]) == [4, 1]) // cannot find 'pluck' in scope
XCTAssertTrue(pluck(arr: [7, 6, 7, 1]) == [6, 1]) // cannot find 'pluck' in scope
XCTAssertTrue(pluck(arr: [7, 9, 7, 1]) == [] as [Int]) // cannot find 'pluck' in scope

func pluck(arr: [Int]) -> [Int] {
    var arr = arr
    var index = 0
    var value = 0
    for i in 0..<arr.count {
        if arr[i] % 2 == 0 {
            if value == 0 {
                value = arr[i]
                index = i
            } else if arr[i] < value {
                value = arr[i]
                index = i
            }
        }
    }
    return [value, index]
}
```swift
// "Given an array representing a branch of a tree that has non-negative integer nodes
// your task is to pluck one of the nodes and return it.
// The plucked node should be the node with the smallest even value.
// If multiple nodes with the same smallest even value are found return the node that has smallest index.
// The plucked node should be returned in an array, [ smalest_value, its index ],
// If there are no even values or the given array is empty, return [].
// Example 1:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 2:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 3:
// Example 4:
// Explanation: 0 is the smallest value, but  there are two zeros,
// so we will choose the first zero, which has the smallest index.
// Constraints:
// * 1 <= nodes.length <= 10000
// * 0 <= node.value
// pluck(arr: [4, 2, 3]) == [2, 1]
// pluck(arr: [1, 2, 3]) == [2, 1]
// pluck(arr: [] as [Int]) == [] as [Int]
// pluck(arr: [5, 0, 3, 0, 4, 2]) == [0, 1]
func pluck(arr: [Int]) -> [Int] {
    var arr = arr
    var index = 0
    var value = 0
    for i in 0..<arr.count {
        if arr[i] % 2 == 0 {
            if value == 0 {
                value = arr[i]
                index = i
            } else if arr[i] < value {
                value = arr[i]
                index = i
            }
        }
    }
    return [value, index]
}
<|file_separator|>
var arr = arr // variable 'arr' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func pluck(arr: [Int]) -> [Int] {
    // Write your code here
}
```swift
// "Given an array representing a branch of a tree that has non-negative integer nodes
// your task is to pluck one of the nodes and return it.
// The plucked node should be the node with the smallest even value.
// If multiple nodes with the same smallest even value are found return the node that has smallest index.
// The plucked node should be returned in an array, [ smalest_value, its index ],
// If there are no even values or the given array is empty, return [].
// Example 1:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 2:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 3:
// Example 4:
// Explanation: 0 is the smallest value, but  there are two zeros,
// so we will choose the first zero, which has the smallest index.
// Constraints:
// * 1 <= nodes.length <= 10000
// * 0 <= node.value
// pluck(arr: [4, 2, 3]) == [2, 1]
// pluck(arr: [1, 2, 3]) == [2, 1]
// pluck(arr: [] as [Int]) == [] as [Int]
// pluck(arr: [5, 0, 3, 0, 4, 2]) == [0, 1]
func pluck(arr: [Int]) -> [Int] {
    // Write your code here
}
<|file_separator|>
} // missing return in global function expected to return '[Int]'

func pluck(arr: [Int]) -> [Int] {
    var arr = arr
    var result = [Int]()
    var min = arr[0]
    var index = 0
    for i in 0..<arr.count {
        if arr[i] % 2 == 0 {
            if arr[i] < min {
                min = arr[i]
                index = i
            }
        }
    }
    result.append(min)
    result.append(index)
    return result
}
```swift
// "Given an array representing a branch of a tree that has non-negative integer nodes
// your task is to pluck one of the nodes and return it.
// The plucked node should be the node with the smallest even value.
// If multiple nodes with the same smallest even value are found return the node that has smallest index.
// The plucked node should be returned in an array, [ smalest_value, its index ],
// If there are no even values or the given array is empty, return [].
// Example 1:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 2:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 3:
// Example 4:
// Explanation: 0 is the smallest value, but  there are two zeros,
// so we will choose the first zero, which has the smallest index.
// Constraints:
// * 1 <= nodes.length <= 10000
// * 0 <= node.value
// pluck(arr: [4, 2, 3]) == [2, 1]
// pluck(arr: [1, 2, 3]) == [2, 1]
// pluck(arr: [] as [Int]) == [] as [Int]
// pluck(arr: [5, 0, 3, 0, 4, 2]) == [0, 1]
func pluck(arr: [Int]) -> [Int] {
    var arr = arr
    var result = [Int]()
    var min = arr[0]
    var index = 0
    for i in 0..<arr.count {
        if arr[i] % 2 == 0 {
            if arr[i] < min {
                min = arr[i]
                index = i
            }
        }
    }
    result.append(min)
    result.append(index)
    return result
}
<|file_separator|>
var arr = arr // variable 'arr' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func pluck(arr: [Int]) -> [Int] {
    var arr = arr
    var index = 0
    var value = 0
    for i in 0..<arr.count {
        if arr[i] % 2 == 0 {
            if value == 0 {
                value = arr[i]
                index = i
            } else if value > arr[i] {
                value = arr[i]
                index = i
            }
        }
    }
    return [value, index]
}
```swift
// "Given an array representing a branch of a tree that has non-negative integer nodes
// your task is to pluck one of the nodes and return it.
// The plucked node should be the node with the smallest even value.
// If multiple nodes with the same smallest even value are found return the node that has smallest index.
// The plucked node should be returned in an array, [ smalest_value, its index ],
// If there are no even values or the given array is empty, return [].
// Example 1:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 2:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 3:
// Example 4:
// Explanation: 0 is the smallest value, but  there are two zeros,
// so we will choose the first zero, which has the smallest index.
// Constraints:
// * 1 <= nodes.length <= 10000
// * 0 <= node.value
// pluck(arr: [4, 2, 3]) == [2, 1]
// pluck(arr: [1, 2, 3]) == [2, 1]
// pluck(arr: [] as [Int]) == [] as [Int]
// pluck(arr: [5, 0, 3, 0, 4, 2]) == [0, 1]
func pluck(arr: [Int]) -> [Int] {
    var arr = arr
    var index = 0
    var value = 0
    for i in 0..<arr.count {
        if arr[i] % 2 == 0 {
            if value == 0 {
                value = arr[i]
                index = i
            } else if value > arr[i] {
                value = arr[i]
                index = i
            }
        }
    }
    return [value, index]
}
<|file_separator|>
var arr = arr // variable 'arr' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func pluck(arr: [Int]) -> [Int] {
    var result = [Int]()
    var even = [Int]()
    for i in arr {
        if i % 2 == 0 {
            even.append(i)
        }
    }
    if even.count == 0 {
        return []
    }
    var min = even[0]
    var index = 0
    for i in 0..<even.count {
        if even[i] < min {
            min = even[i]
            index = i
        }
    }
    result.append(min)
    result.append(index)
    return result
}
```swift
// "Given an array representing a branch of a tree that has non-negative integer nodes
// your task is to pluck one of the nodes and return it.
// The plucked node should be the node with the smallest even value.
// If multiple nodes with the same smallest even value are found return the node that has smallest index.
// The plucked node should be returned in an array, [ smalest_value, its index ],
// If there are no even values or the given array is empty, return [].
// Example 1:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 2:
// Explanation: 2 has the smallest even value, and 2 has the smallest index.
// Example 3:
// Example 4:
// Explanation: 0 is the smallest value, but  there are two zeros,
// so we will choose the first zero, which has the smallest index.
// Constraints:
// * 1 <= nodes.length <= 10000
// * 0 <= node.value
// pluck(arr: [4, 2, 3]) == [2, 1]
// pluck(arr: [1, 2, 3]) == [2, 1]
// pluck(arr: [] as [Int]) == [] as [Int]
// pluck(arr: [5, 0, 3, 0, 4, 2]) == [0, 1]
func pluck(arr: [Int]) -> [Int] {
    var result = [Int]()
    var even = [Int]()
    for i in arr {
        if i % 2 == 0 {
            even.append(i)
        }
    }
    if even.count == 0 {
        return []
    }
    var min = even[0]
    var index = 0
    for i in 0..<even.count {
        if even[i] < min {
            min = even[i]
            index = i
        }
    }
    result.append(min)
    result.append(index)
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func search(lst: [Int]) -> Int {
  var result = -1
  var max = 0
  for i in 0..<lst.count {
    if lst[i] == lst[i] {
      max = lst[i]
    }
    if lst[i] > max {
      max = lst[i]
    }
  }
  for i in 0..<lst.count {
    if lst[i] == max {
      result = lst[i]
    }
  }
  return result
}
```swift
// You are given a non-empty array of positive integers. Return the greatest integer that is greater than 
// zero, and has a frequency greater than or equal to the value of the integer itself. 
// The frequency of an integer is the number of times it appears in the array.
// If no such a value exist, return -1.
// Examples:
// search(lst: [4, 1, 2, 2, 3, 1]) == 2
// search(lst: [1, 2, 2, 3, 3, 3, 4, 4, 4]) == 3
// search(lst: [5, 5, 4, 4, 4]) == -1
func search(lst: [Int]) -> Int {
  var result = -1
  var max = 0
  for i in 0..<lst.count {
    if lst[i] == lst[i] {
      max = lst[i]
    }
    if lst[i] > max {
      max = lst[i]
    }
  }
  for i in 0..<lst.count {
    if lst[i] == max {
      result = lst[i]
    }
  }
  return result
}
<|file_separator|>
 // XCTAssertTrue failed

func search(lst: [Int]) -> Int {
    var max = -1
    var maxCount = 0
    var count = 0
    for i in lst {
        if i == max {
            count += 1
        } else if i > max {
            max = i
            count = 1
        }
        if count > maxCount {
            maxCount = count
        }
    }
    return maxCount >= max ? max : -1
}
```swift
// You are given a non-empty array of positive integers. Return the greatest integer that is greater than 
// zero, and has a frequency greater than or equal to the value of the integer itself. 
// The frequency of an integer is the number of times it appears in the array.
// If no such a value exist, return -1.
// Examples:
// search(lst: [4, 1, 2, 2, 3, 1]) == 2
// search(lst: [1, 2, 2, 3, 3, 3, 4, 4, 4]) == 3
// search(lst: [5, 5, 4, 4, 4]) == -1
func search(lst: [Int]) -> Int {
    var max = -1
    var maxCount = 0
    var count = 0
    for i in lst {
        if i == max {
            count += 1
        } else if i > max {
            max = i
            count = 1
        }
        if count > maxCount {
            maxCount = count
        }
    }
    return maxCount >= max ? max : -1
}
<|file_separator|>
 // XCTAssertTrue failed

func search(lst: [Int]) -> Int {
    var result = -1
    var freq = [Int: Int]()
    for i in lst {
        if freq[i] == nil {
            freq[i] = 1
        } else {
            freq[i]! += 1
        }
    }
    for (key, value) in freq {
        if value >= key {
            result = key
            break
        }
    }
    return result
}
```swift
// You are given a non-empty array of positive integers. Return the greatest integer that is greater than 
// zero, and has a frequency greater than or equal to the value of the integer itself. 
// The frequency of an integer is the number of times it appears in the array.
// If no such a value exist, return -1.
// Examples:
// search(lst: [4, 1, 2, 2, 3, 1]) == 2
// search(lst: [1, 2, 2, 3, 3, 3, 4, 4, 4]) == 3
// search(lst: [5, 5, 4, 4, 4]) == -1
func search(lst: [Int]) -> Int {
    var result = -1
    var freq = [Int: Int]()
    for i in lst {
        if freq[i] == nil {
            freq[i] = 1
        } else {
            freq[i]! += 1
        }
    }
    for (key, value) in freq {
        if value >= key {
            result = key
            break
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func search(lst: [Int]) -> Int {
    var freq = [Int: Int]()
    for i in lst {
        if freq[i] == nil {
            freq[i] = 1
        } else {
            freq[i]! += 1
        }
    }
    var max = -1
    for (key, value) in freq {
        if value >= key && key > max {
            max = key
        }
    }
    return max
}
```swift
// You are given a non-empty array of positive integers. Return the greatest integer that is greater than 
// zero, and has a frequency greater than or equal to the value of the integer itself. 
// The frequency of an integer is the number of times it appears in the array.
// If no such a value exist, return -1.
// Examples:
// search(lst: [4, 1, 2, 2, 3, 1]) == 2
// search(lst: [1, 2, 2, 3, 3, 3, 4, 4, 4]) == 3
// search(lst: [5, 5, 4, 4, 4]) == -1
func search(lst: [Int]) -> Int {
    var freq = [Int: Int]()
    for i in lst {
        if freq[i] == nil {
            freq[i] = 1
        } else {
            freq[i]! += 1
        }
    }
    var max = -1
    for (key, value) in freq {
        if value >= key && key > max {
            max = key
        }
    }
    return max
}
<|file_separator|>

func search(lst: [Int]) -> Int {
    var freq = [Int: Int]()
    for i in lst {
        if freq[i] == nil {
            freq[i] = 1
        } else {
            freq[i]! += 1
        }
    }
    for i in lst {
        if freq[i]! >= i {
            return i
        }
    }
    return -1
}
```swift
// You are given a non-empty array of positive integers. Return the greatest integer that is greater than 
// zero, and has a frequency greater than or equal to the value of the integer itself. 
// The frequency of an integer is the number of times it appears in the array.
// If no such a value exist, return -1.
// Examples:
// search(lst: [4, 1, 2, 2, 3, 1]) == 2
// search(lst: [1, 2, 2, 3, 3, 3, 4, 4, 4]) == 3
// search(lst: [5, 5, 4, 4, 4]) == -1
func search(lst: [Int]) -> Int {
    var freq = [Int: Int]()
    for i in lst {
        if freq[i] == nil {
            freq[i] = 1
        } else {
            freq[i]! += 1
        }
    }
    for i in lst {
        if freq[i]! >= i {
            return i
        }
    }
    return -1
}
<|file_separator|>
 // XCTAssertTrue failed

func search(lst: [Int]) -> Int {
    var result = -1
    var max = 0
    for i in 0..<lst.count {
        if lst[i] == lst[i] {
            max = lst[i]
        }
        if lst[i] > max {
            max = lst[i]
        }
    }
    for i in 0..<lst.count {
        if lst[i] == max {
            result = lst[i]
            break
        }
    }
    return result
}
```swift
// You are given a non-empty array of positive integers. Return the greatest integer that is greater than 
// zero, and has a frequency greater than or equal to the value of the integer itself. 
// The frequency of an integer is the number of times it appears in the array.
// If no such a value exist, return -1.
// Examples:
// search(lst: [4, 1, 2, 2, 3, 1]) == 2
// search(lst: [1, 2, 2, 3, 3, 3, 4, 4, 4]) == 3
// search(lst: [5, 5, 4, 4, 4]) == -1
func search(lst: [Int]) -> Int {
    var result = -1
    var max = 0
    for i in 0..<lst.count {
        if lst[i] == lst[i] {
            max = lst[i]
        }
        if lst[i] > max {
            max = lst[i]
        }
    }
    for i in 0..<lst.count {
        if lst[i] == max {
            result = lst[i]
            break
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func search(lst: [Int]) -> Int {
    var result = -1
    var max = 0
    for i in lst {
        if i > max {
            max = i
        }
    }
    for i in lst {
        if i == max {
            result = i
            break
        }
    }
    return result
}
```swift
// You are given a non-empty array of positive integers. Return the greatest integer that is greater than 
// zero, and has a frequency greater than or equal to the value of the integer itself. 
// The frequency of an integer is the number of times it appears in the array.
// If no such a value exist, return -1.
// Examples:
// search(lst: [4, 1, 2, 2, 3, 1]) == 2
// search(lst: [1, 2, 2, 3, 3, 3, 4, 4, 4]) == 3
// search(lst: [5, 5, 4, 4, 4]) == -1
func search(lst: [Int]) -> Int {
    var result = -1
    var max = 0
    for i in lst {
        if i > max {
            max = i
        }
    }
    for i in lst {
        if i == max {
            result = i
            break
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func search(lst: [Int]) -> Int {
    var result = -1
    var max = 0
    for i in 0..<lst.count {
        if lst[i] == lst[i] {
            max = lst[i]
            result = lst[i]
        }
    }
    return result
}
```swift
// You are given a non-empty array of positive integers. Return the greatest integer that is greater than 
// zero, and has a frequency greater than or equal to the value of the integer itself. 
// The frequency of an integer is the number of times it appears in the array.
// If no such a value exist, return -1.
// Examples:
// search(lst: [4, 1, 2, 2, 3, 1]) == 2
// search(lst: [1, 2, 2, 3, 3, 3, 4, 4, 4]) == 3
// search(lst: [5, 5, 4, 4, 4]) == -1
func search(lst: [Int]) -> Int {
    var result = -1
    var max = 0
    for i in 0..<lst.count {
        if lst[i] == lst[i] {
            max = lst[i]
            result = lst[i]
        }
    }
    return result
}
<|file_separator|>
var max = 0 // variable 'max' was written to, but never read
 // XCTAssertTrue failed

func search(lst: [Int]) -> Int {
  var max = -1
  var max_freq = -1
  for i in 0..<lst.count {
    if lst[i] > max {
      max = lst[i]
      max_freq = 1
    } else if lst[i] == max {
      max_freq += 1
    }
  }
  return max_freq >= lst[max] ? max : -1
}
```swift
// You are given a non-empty array of positive integers. Return the greatest integer that is greater than 
// zero, and has a frequency greater than or equal to the value of the integer itself. 
// The frequency of an integer is the number of times it appears in the array.
// If no such a value exist, return -1.
// Examples:
// search(lst: [4, 1, 2, 2, 3, 1]) == 2
// search(lst: [1, 2, 2, 3, 3, 3, 4, 4, 4]) == 3
// search(lst: [5, 5, 4, 4, 4]) == -1
func search(lst: [Int]) -> Int {
  var max = -1
  var max_freq = -1
  for i in 0..<lst.count {
    if lst[i] > max {
      max = lst[i]
      max_freq = 1
    } else if lst[i] == max {
      max_freq += 1
    }
  }
  return max_freq >= lst[max] ? max : -1
}
<|file_separator|>
 // Fatal error: Index out of range

func search(lst: [Int]) -> Int {
    var freq = [Int: Int]()
    for i in lst {
        if freq[i] == nil {
            freq[i] = 1
        } else {
            freq[i]! += 1
        }
    }
    for i in freq {
        if i.key > 0 && i.value >= i.key {
            return i.key
        }
    }
    return -1
}
```swift
// You are given a non-empty array of positive integers. Return the greatest integer that is greater than 
// zero, and has a frequency greater than or equal to the value of the integer itself. 
// The frequency of an integer is the number of times it appears in the array.
// If no such a value exist, return -1.
// Examples:
// search(lst: [4, 1, 2, 2, 3, 1]) == 2
// search(lst: [1, 2, 2, 3, 3, 3, 4, 4, 4]) == 3
// search(lst: [5, 5, 4, 4, 4]) == -1
func search(lst: [Int]) -> Int {
    var freq = [Int: Int]()
    for i in lst {
        if freq[i] == nil {
            freq[i] = 1
        } else {
            freq[i]! += 1
        }
    }
    for i in freq {
        if i.key > 0 && i.value >= i.key {
            return i.key
        }
    }
    return -1
}
<|file_separator|>
 // XCTAssertTrue failed

func strangeSortList(lst: [Int]) -> [Int] {
    var lst = lst
    var result = [Int]()
    var min = lst.min()!
    var max = lst.max()!
    while lst.count > 0 {
        if lst.contains(min) {
            result.append(min)
            lst.remove(at: lst.index(of: min)!)
        }
        if lst.contains(max) {
            result.append(max)
            lst.remove(at: lst.index(of: max)!)
        }
        min = lst.min()!
        max = lst.max()!
    }
    return result
}
```swift
// Given array of integers, return array in strange order.
// Strange sorting, is when you start with the minimum value,
// then maximum of the remaining integers, then minimum and so on.
// Examples:
// strangeSortList(lst: [1, 2, 3, 4]) == [1, 4, 2, 3]
// strangeSortList(lst: [5, 5, 5, 5]) == [5, 5, 5, 5]
// strangeSortList(lst: [] as [Int]) == [] as [Int]
func strangeSortList(lst: [Int]) -> [Int] {
    var lst = lst
    var result = [Int]()
    var min = lst.min()!
    var max = lst.max()!
    while lst.count > 0 {
        if lst.contains(min) {
            result.append(min)
            lst.remove(at: lst.index(of: min)!)
        }
        if lst.contains(max) {
            result.append(max)
            lst.remove(at: lst.index(of: max)!)
        }
        min = lst.min()!
        max = lst.max()!
    }
    return result
}
<|file_separator|>
lst.remove(at: lst.index(of: min)!) // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'
lst.remove(at: lst.index(of: max)!) // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'
 // Fatal error: Unexpectedly found nil while unwrapping an Optional value

func strangeSortList(lst: [Int]) -> [Int] {
  var lst = lst
  var result = [Int]()
  while lst.count > 0 {
    var min = Int.max
    var index = -1
    for i in 0..<lst.count {
      if lst[i] < min {
        min = lst[i]
        index = i
      }
    }
    result.append(lst[index])
    lst.remove(at: index)
  }
  return result
}
```swift
// Given array of integers, return array in strange order.
// Strange sorting, is when you start with the minimum value,
// then maximum of the remaining integers, then minimum and so on.
// Examples:
// strangeSortList(lst: [1, 2, 3, 4]) == [1, 4, 2, 3]
// strangeSortList(lst: [5, 5, 5, 5]) == [5, 5, 5, 5]
// strangeSortList(lst: [] as [Int]) == [] as [Int]
func strangeSortList(lst: [Int]) -> [Int] {
  var lst = lst
  var result = [Int]()
  while lst.count > 0 {
    var min = Int.max
    var index = -1
    for i in 0..<lst.count {
      if lst[i] < min {
        min = lst[i]
        index = i
      }
    }
    result.append(lst[index])
    lst.remove(at: index)
  }
  return result
}
<|file_separator|>
 // XCTAssertTrue failed

func strangeSortList(lst: [Int]) -> [Int] {
  var lst = lst
  var result = [Int]()
  var min = Int.max
  var max = Int.min
  
  while lst.count > 0 {
    for i in 0..<lst.count {
      if lst[i] < min {
        min = lst[i]
      }
      if lst[i] > max {
        max = lst[i]
      }
    }
    result.append(min)
    result.append(max)
    lst.remove(at: lst.firstIndex(of: min)!)
    lst.remove(at: lst.firstIndex(of: max)!)
    min = Int.max
    max = Int.min
  }
  
  return result
}
```swift
// Given array of integers, return array in strange order.
// Strange sorting, is when you start with the minimum value,
// then maximum of the remaining integers, then minimum and so on.
// Examples:
// strangeSortList(lst: [1, 2, 3, 4]) == [1, 4, 2, 3]
// strangeSortList(lst: [5, 5, 5, 5]) == [5, 5, 5, 5]
// strangeSortList(lst: [] as [Int]) == [] as [Int]
func strangeSortList(lst: [Int]) -> [Int] {
  var lst = lst
  var result = [Int]()
  var min = Int.max
  var max = Int.min
  
  while lst.count > 0 {
    for i in 0..<lst.count {
      if lst[i] < min {
        min = lst[i]
      }
      if lst[i] > max {
        max = lst[i]
      }
    }
    result.append(min)
    result.append(max)
    lst.remove(at: lst.firstIndex(of: min)!)
    lst.remove(at: lst.firstIndex(of: max)!)
    min = Int.max
    max = Int.min
  }
  
  return result
}
<|file_separator|>
 // Fatal error: Unexpectedly found nil while unwrapping an Optional value

func strangeSortList(lst: [Int]) -> [Int] {
    var lst = lst
    var sorted = [Int]()
    var min = lst.min()!
    var max = lst.max()!
    while sorted.count < lst.count {
        for i in 0..<lst.count {
            if lst[i] == min {
                sorted.append(lst[i])
                lst.remove(at: i)
                min = lst.min()!
                break
            }
        }
        for i in 0..<lst.count {
            if lst[i] == max {
                sorted.append(lst[i])
                lst.remove(at: i)
                max = lst.max()!
                break
            }
        }
    }
    return sorted
}
```swift
// Given array of integers, return array in strange order.
// Strange sorting, is when you start with the minimum value,
// then maximum of the remaining integers, then minimum and so on.
// Examples:
// strangeSortList(lst: [1, 2, 3, 4]) == [1, 4, 2, 3]
// strangeSortList(lst: [5, 5, 5, 5]) == [5, 5, 5, 5]
// strangeSortList(lst: [] as [Int]) == [] as [Int]
func strangeSortList(lst: [Int]) -> [Int] {
    var lst = lst
    var sorted = [Int]()
    var min = lst.min()!
    var max = lst.max()!
    while sorted.count < lst.count {
        for i in 0..<lst.count {
            if lst[i] == min {
                sorted.append(lst[i])
                lst.remove(at: i)
                min = lst.min()!
                break
            }
        }
        for i in 0..<lst.count {
            if lst[i] == max {
                sorted.append(lst[i])
                lst.remove(at: i)
                max = lst.max()!
                break
            }
        }
    }
    return sorted
}
<|file_separator|>
 // XCTAssertTrue failed

func strangeSortList(lst: [Int]) -> [Int] {
  var result = [Int]()
  var lst = lst
  var min = lst.min()!
  var max = lst.max()!
  while lst.count > 0 {
    if lst.contains(min) {
      result.append(min)
      lst.remove(at: lst.index(of: min)!)
    } else {
      result.append(max)
      lst.remove(at: lst.index(of: max)!)
    }
    min = lst.min()!
    max = lst.max()!
  }
  return result
}
```swift
// Given array of integers, return array in strange order.
// Strange sorting, is when you start with the minimum value,
// then maximum of the remaining integers, then minimum and so on.
// Examples:
// strangeSortList(lst: [1, 2, 3, 4]) == [1, 4, 2, 3]
// strangeSortList(lst: [5, 5, 5, 5]) == [5, 5, 5, 5]
// strangeSortList(lst: [] as [Int]) == [] as [Int]
func strangeSortList(lst: [Int]) -> [Int] {
  var result = [Int]()
  var lst = lst
  var min = lst.min()!
  var max = lst.max()!
  while lst.count > 0 {
    if lst.contains(min) {
      result.append(min)
      lst.remove(at: lst.index(of: min)!)
    } else {
      result.append(max)
      lst.remove(at: lst.index(of: max)!)
    }
    min = lst.min()!
    max = lst.max()!
  }
  return result
}
<|file_separator|>
lst.remove(at: lst.index(of: min)!) // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'
lst.remove(at: lst.index(of: max)!) // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'
 // Fatal error: Unexpectedly found nil while unwrapping an Optional value

func strangeSortList(lst: [Int]) -> [Int] {
  var lst = lst
  var min = lst.min()!
  var max = lst.max()!
  var i = 0
  while i < lst.count {
    if lst[i] == min {
      lst.remove(at: i)
      lst.insert(max, at: i)
      max = lst.max()!
      i = 0
    } else {
      i += 1
    }
  }
  return lst
}
```swift
// Given array of integers, return array in strange order.
// Strange sorting, is when you start with the minimum value,
// then maximum of the remaining integers, then minimum and so on.
// Examples:
// strangeSortList(lst: [1, 2, 3, 4]) == [1, 4, 2, 3]
// strangeSortList(lst: [5, 5, 5, 5]) == [5, 5, 5, 5]
// strangeSortList(lst: [] as [Int]) == [] as [Int]
func strangeSortList(lst: [Int]) -> [Int] {
  var lst = lst
  var min = lst.min()!
  var max = lst.max()!
  var i = 0
  while i < lst.count {
    if lst[i] == min {
      lst.remove(at: i)
      lst.insert(max, at: i)
      max = lst.max()!
      i = 0
    } else {
      i += 1
    }
  }
  return lst
}
<|file_separator|>
var min = lst.min()! // variable 'min' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func strangeSortList(lst: [Int]) -> [Int] {
  var lst = lst
  var sorted = [Int]()
  var min = lst.min()!
  var max = lst.max()!
  while lst.count > 0 {
    sorted.append(min)
    lst.remove(at: lst.index(of: min)!)
    if lst.count == 0 {
      break
    }
    min = lst.min()!
    max = lst.max()!
  }
  return sorted
}
```swift
// Given array of integers, return array in strange order.
// Strange sorting, is when you start with the minimum value,
// then maximum of the remaining integers, then minimum and so on.
// Examples:
// strangeSortList(lst: [1, 2, 3, 4]) == [1, 4, 2, 3]
// strangeSortList(lst: [5, 5, 5, 5]) == [5, 5, 5, 5]
// strangeSortList(lst: [] as [Int]) == [] as [Int]
func strangeSortList(lst: [Int]) -> [Int] {
  var lst = lst
  var sorted = [Int]()
  var min = lst.min()!
  var max = lst.max()!
  while lst.count > 0 {
    sorted.append(min)
    lst.remove(at: lst.index(of: min)!)
    if lst.count == 0 {
      break
    }
    min = lst.min()!
    max = lst.max()!
  }
  return sorted
}
<|file_separator|>
var max = lst.max()! // variable 'max' was written to, but never read
lst.remove(at: lst.index(of: min)!) // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'
 // XCTAssertTrue failed

func strangeSortList(lst: [Int]) -> [Int] {
  var result = [Int]()
  var lst = lst
  while lst.count > 0 {
    var min = lst[0]
    var minIndex = 0
    for i in 1..<lst.count {
      if lst[i] < min {
        min = lst[i]
        minIndex = i
      }
    }
    result.append(min)
    lst.remove(at: minIndex)
  }
  return result
}
```swift
// Given array of integers, return array in strange order.
// Strange sorting, is when you start with the minimum value,
// then maximum of the remaining integers, then minimum and so on.
// Examples:
// strangeSortList(lst: [1, 2, 3, 4]) == [1, 4, 2, 3]
// strangeSortList(lst: [5, 5, 5, 5]) == [5, 5, 5, 5]
// strangeSortList(lst: [] as [Int]) == [] as [Int]
func strangeSortList(lst: [Int]) -> [Int] {
  var result = [Int]()
  var lst = lst
  while lst.count > 0 {
    var min = lst[0]
    var minIndex = 0
    for i in 1..<lst.count {
      if lst[i] < min {
        min = lst[i]
        minIndex = i
      }
    }
    result.append(min)
    lst.remove(at: minIndex)
  }
  return result
}
<|file_separator|>
 // XCTAssertTrue failed

func strangeSortList(lst: [Int]) -> [Int] {
  var lst = lst
  var sorted = [Int]()
  var min = lst.min()!
  var max = lst.max()!
  while lst.count > 0 {
    if lst.contains(min) {
      sorted.append(min)
      lst.remove(at: lst.index(of: min)!)
      min = lst.min()!
    } else {
      sorted.append(max)
      lst.remove(at: lst.index(of: max)!)
      max = lst.max()!
    }
  }
  return sorted
}
```swift
// Given array of integers, return array in strange order.
// Strange sorting, is when you start with the minimum value,
// then maximum of the remaining integers, then minimum and so on.
// Examples:
// strangeSortList(lst: [1, 2, 3, 4]) == [1, 4, 2, 3]
// strangeSortList(lst: [5, 5, 5, 5]) == [5, 5, 5, 5]
// strangeSortList(lst: [] as [Int]) == [] as [Int]
func strangeSortList(lst: [Int]) -> [Int] {
  var lst = lst
  var sorted = [Int]()
  var min = lst.min()!
  var max = lst.max()!
  while lst.count > 0 {
    if lst.contains(min) {
      sorted.append(min)
      lst.remove(at: lst.index(of: min)!)
      min = lst.min()!
    } else {
      sorted.append(max)
      lst.remove(at: lst.index(of: max)!)
      max = lst.max()!
    }
  }
  return sorted
}
<|file_separator|>
lst.remove(at: lst.index(of: min)!) // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'
lst.remove(at: lst.index(of: max)!) // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'
 // Fatal error: Unexpectedly found nil while unwrapping an Optional value

func strangeSortList(lst: [Int]) -> [Int] {
  var sorted = lst.sorted()
  var result = [Int]()
  var min = sorted.first
  var max = sorted.last
  
  while result.count < lst.count {
    if result.count == 0 {
      result.append(min!)
      min = sorted.min()
    } else {
      if max! > result.last! {
        result.append(max!)
        max = sorted.max()
      } else {
        result.append(min!)
        min = sorted.min()
      }
    }
  }
  
  return result
}
```swift
// Given array of integers, return array in strange order.
// Strange sorting, is when you start with the minimum value,
// then maximum of the remaining integers, then minimum and so on.
// Examples:
// strangeSortList(lst: [1, 2, 3, 4]) == [1, 4, 2, 3]
// strangeSortList(lst: [5, 5, 5, 5]) == [5, 5, 5, 5]
// strangeSortList(lst: [] as [Int]) == [] as [Int]
func strangeSortList(lst: [Int]) -> [Int] {
  var sorted = lst.sorted()
  var result = [Int]()
  var min = sorted.first
  var max = sorted.last
  
  while result.count < lst.count {
    if result.count == 0 {
      result.append(min!)
      min = sorted.min()
    } else {
      if max! > result.last! {
        result.append(max!)
        max = sorted.max()
      } else {
        result.append(min!)
        min = sorted.min()
      }
    }
  }
  
  return result
}
<|file_separator|>
var sorted = lst.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func triangleArea(a: Int, b: Int, c: Int) -> Double {
  let a = Double(a)
  let b = Double(b)
  let c = Double(c)
  if a + b > c && a + c > b && b + c > a {
    let s = (a + b + c) / 2
    return (s * (s - a) * (s - b) * (s - c)).squareRoot()
  }
  return -1
}
```swift
// Given the lengths of the three sides of a triangle. Return the area of
// the triangle rounded to 2 decimal points if the three sides form a valid triangle. 
// Otherwise return -1
// Three sides make a valid triangle when the sum of any two sides is greater 
// than the third side.
// Example:
// triangleArea(a: 3, b: 4, c: 5) == 6.0
// triangleArea(a: 1, b: 2, c: 10) == -1
func triangleArea(a: Int, b: Int, c: Int) -> Double {
  let a = Double(a)
  let b = Double(b)
  let c = Double(c)
  if a + b > c && a + c > b && b + c > a {
    let s = (a + b + c) / 2
    return (s * (s - a) * (s - b) * (s - c)).squareRoot()
  }
  return -1
}
<|file_separator|>
 // XCTAssertTrue failed

func triangleArea(a: Int, b: Int, c: Int) -> Double {
  if a + b > c && a + c > b && b + c > a {
    let s = (a + b + c) / 2
    return (s * (s - a) * (s - b) * (s - c)).squareRoot()
  }
  return -1
}
```swift
// Given the lengths of the three sides of a triangle. Return the area of
// the triangle rounded to 2 decimal points if the three sides form a valid triangle. 
// Otherwise return -1
// Three sides make a valid triangle when the sum of any two sides is greater 
// than the third side.
// Example:
// triangleArea(a: 3, b: 4, c: 5) == 6.0
// triangleArea(a: 1, b: 2, c: 10) == -1
func triangleArea(a: Int, b: Int, c: Int) -> Double {
  if a + b > c && a + c > b && b + c > a {
    let s = (a + b + c) / 2
    return (s * (s - a) * (s - b) * (s - c)).squareRoot()
  }
  return -1
}
<|file_separator|>
return (s * (s - a) * (s - b) * (s - c)).squareRoot() // value of type 'Int' has no member 'squareRoot'

func triangleArea(a: Int, b: Int, c: Int) -> Double {
    if a + b > c && a + c > b && b + c > a {
        let p = (a + b + c) / 2
        return (p * (p - a) * (p - b) * (p - c)).squareRoot()
    }
    return -1
}
```swift
// Given the lengths of the three sides of a triangle. Return the area of
// the triangle rounded to 2 decimal points if the three sides form a valid triangle. 
// Otherwise return -1
// Three sides make a valid triangle when the sum of any two sides is greater 
// than the third side.
// Example:
// triangleArea(a: 3, b: 4, c: 5) == 6.0
// triangleArea(a: 1, b: 2, c: 10) == -1
func triangleArea(a: Int, b: Int, c: Int) -> Double {
    if a + b > c && a + c > b && b + c > a {
        let p = (a + b + c) / 2
        return (p * (p - a) * (p - b) * (p - c)).squareRoot()
    }
    return -1
}
<|file_separator|>
return (p * (p - a) * (p - b) * (p - c)).squareRoot() // value of type 'Int' has no member 'squareRoot'

func triangleArea(a: Int, b: Int, c: Int) -> Double {
    if a + b > c && a + c > b && b + c > a {
        let p = (a + b + c) / 2
        return (p * (p - a) * (p - b) * (p - c)).squareRoot()
    }
    return -1
}
```swift
// Given the lengths of the three sides of a triangle. Return the area of
// the triangle rounded to 2 decimal points if the three sides form a valid triangle. 
// Otherwise return -1
// Three sides make a valid triangle when the sum of any two sides is greater 
// than the third side.
// Example:
// triangleArea(a: 3, b: 4, c: 5) == 6.0
// triangleArea(a: 1, b: 2, c: 10) == -1
func triangleArea(a: Int, b: Int, c: Int) -> Double {
    if a + b > c && a + c > b && b + c > a {
        let p = (a + b + c) / 2
        return (p * (p - a) * (p - b) * (p - c)).squareRoot()
    }
    return -1
}
<|file_separator|>
return (p * (p - a) * (p - b) * (p - c)).squareRoot() // value of type 'Int' has no member 'squareRoot'

func triangleArea(a: Int, b: Int, c: Int) -> Double {
  if a + b > c && a + c > b && b + c > a {
    let p = (a + b + c) / 2
    return (p * (p - a) * (p - b) * (p - c)).squareRoot()
  }
  return -1
}
```swift
// Given the lengths of the three sides of a triangle. Return the area of
// the triangle rounded to 2 decimal points if the three sides form a valid triangle. 
// Otherwise return -1
// Three sides make a valid triangle when the sum of any two sides is greater 
// than the third side.
// Example:
// triangleArea(a: 3, b: 4, c: 5) == 6.0
// triangleArea(a: 1, b: 2, c: 10) == -1
func triangleArea(a: Int, b: Int, c: Int) -> Double {
  if a + b > c && a + c > b && b + c > a {
    let p = (a + b + c) / 2
    return (p * (p - a) * (p - b) * (p - c)).squareRoot()
  }
  return -1
}
<|file_separator|>
return (p * (p - a) * (p - b) * (p - c)).squareRoot() // value of type 'Int' has no member 'squareRoot'

func triangleArea(a: Int, b: Int, c: Int) -> Double {
    if a + b > c && a + c > b && b + c > a {
        let p = (a + b + c) / 2.0
        return (p * (p - a) * (p - b) * (p - c)).squareRoot()
    }
    return -1
}

func maxProduct(arr: [Int]) -> Int {
    var max = 0
    for i in 0..<arr.count {
        for j in 0..<arr.count {
            if i != j {
                if arr[i] * arr[j] > max {
                    max = arr[i] * arr[j]
                }
            }
        }
    }
    return max
}

func vowels(str: String) -> Int {
    var vowels = 0
    for i in 0..<str.count {
        if str[i] == "a" || str[i] == "e" || str[i] == "i" || str[i] == "o" || str[i] == "u" {
            vowels += 1
        }
    }
    return vowels
}

func consonants(str: String) -> Int {
    var consonants = 0
    for i in 0..<str.count {
        if str[i] != "a" && str[i] != "e" && str[i] != "i" && str[i] != "o" && str[i] != "u" {
            consonants += 1
        }
    }
    return consonants
}

func words(str: String) -> Int {
    var words = 0
    var word = ""
    for i in 0..<str.count {
        if str[i] == " " {
            words += 1
        }
    }
    return words
}
```swift
// Given the lengths of the three sides of a triangle. Return the area of
// the triangle rounded to 2 decimal points if the three sides form a valid triangle. 
// Otherwise return -1
// Three sides make a valid triangle when the sum of any two sides is greater 
// than the third side.
// Example:
// triangleArea(a: 3, b: 4, c: 5) == 6.0
// triangleArea(a: 1, b: 2, c: 10) == -1
func triangleArea(a: Int, b: Int, c: Int) -> Double {
    if a + b > c && a + c > b && b + c > a {
        let p = (a + b + c) / 2.0
        return (p * (p - a) * (p - b) * (p - c)).squareRoot()
    }
    return -1
}

// Given an array of integers, return the sum of the two integers 
// with the largest product.
// Example:
// maxProduct([1, 2, 3, 4, 5]) == 10
// maxProduct([1, 2, 3, 4, 5, 6]) == 30
// maxProduct([1, 2, 3, 4, 5, 6, 7]) == 42
func maxProduct(arr: [Int]) -> Int {
    var max = 0
    for i in 0..<arr.count {
        for j in 0..<arr.count {
            if i != j {
                if arr[i] * arr[j] > max {
                    max = arr[i] * arr[j]
                }
            }
        }
    }
    return max
}

// Given an array of integers, return the sum of the two integers 
// with the largest product.
// Example:
// maxProduct([1, 2, 3, 4, 5]) == 10
// maxProduct([1, 2, 3, 4, 5, 6]) == 30
// maxProduct([1, 2, 3, 4, 5, 6, 7]) == 42
func maxProduct(arr: [Int]) -> Int {
    var max = 0
    for i in 0..<arr.count {
        for j in 0..<arr.count {
            if i != j {
                if arr[i] * arr[j] > max {
                    max = arr[i] * arr[j]
                }
            }
        }
    }
    return max
}

// Given a string, return the number of vowels in the string.
// Example:
// vowels("aeiou") == 5
// vowels("abc") == 0
func vowels(str: String) -> Int {
    var vowels = 0
    for i in 0..<str.count {
        if str[i] == "a" || str[i] == "e" || str[i] == "i" || str[i] == "o" || str[i] == "u" {
            vowels += 1
        }
    }
    return vowels
}

// Given a string, return the number of consonants in the string.
// Example:
// consonants("aeiou") == 0
// consonants("abc") == 3
func consonants(str: String) -> Int {
    var consonants = 0
    for i in 0..<str.count {
        if str[i] != "a" && str[i] != "e" && str[i] != "i" && str[i] != "o" && str[i] != "u" {
            consonants += 1
        }
    }
    return consonants
}

// Given a string, return the number of words in the string.
// Example:
// words("hello") == 1
// words("hello world") == 2
func words(str: String) -> Int {
    var words = 0
    var word = ""
    for i in 0..<str.count {
        if str[i] == " " {
            words += 1
        }
    }
    return words
}

// Given a string, return the number of words in the string.
// Example:
// words("hello") == 1
// words("hello world") == 2
func words(str: String) -> Int {
    var words = 0
    var word = ""
    for i in 0..<str.count {
        if str[i] == " " {
            words += 1
        }
    }
    return words
}

// Given a string, return the number of words in the string.
// Example:
// words("hello") == 1
// words("hello world") == 2
func words(str: String) -> Int {
    var words = 0
    var word = ""
    for i in 0
let p = (a + b + c) / 2.0 // binary operator '/' cannot be applied to operands of type 'Int' and 'Double'
if str[i] == "a" || str[i] == "e" || str[i] == "i" || str[i] == "o" || str[i] == "u" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "a" || str[i] == "e" || str[i] == "i" || str[i] == "o" || str[i] == "u" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "a" || str[i] == "e" || str[i] == "i" || str[i] == "o" || str[i] == "u" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "a" || str[i] == "e" || str[i] == "i" || str[i] == "o" || str[i] == "u" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "a" || str[i] == "e" || str[i] == "i" || str[i] == "o" || str[i] == "u" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] != "a" && str[i] != "e" && str[i] != "i" && str[i] != "o" && str[i] != "u" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] != "a" && str[i] != "e" && str[i] != "i" && str[i] != "o" && str[i] != "u" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] != "a" && str[i] != "e" && str[i] != "i" && str[i] != "o" && str[i] != "u" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] != "a" && str[i] != "e" && str[i] != "i" && str[i] != "o" && str[i] != "u" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] != "a" && str[i] != "e" && str[i] != "i" && str[i] != "o" && str[i] != "u" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
var word = "" // initialization of variable 'word' was never used; consider replacing with assignment to '_' or removing it
if str[i] == " " { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func triangleArea(a: Int, b: Int, c: Int) -> Double {
    let s = (a + b + c) / 2.0
    let area = sqrt(s * (s - a) * (s - b) * (s - c))
    return area
}

func vowels(str: String) -> Int {
    let vowels = "aeiou"
    var count = 0
    for char in str {
        if vowels.contains(char) {
            count += 1
        }
    }
    return count
}

func consonants(str: String) -> Int {
    let vowels = "aeiou"
    var count = 0
    for char in str {
        if !vowels.contains(char) {
            count += 1
        }
    }
    return count
}

func words(str: String) -> Int {
    var count = 0
    var word = ""
    for char in str {
        if char == " " {
            count += 1
        } else {
            word += char
        }
    }
    return count + 1
}

func palindromes(str: String) -> Int {
    var count = 0
    var word = ""
    for char in str {
        if char == " " {
            if word == String(word.reversed()) {
                count += 1
            }
            word = ""
        } else {
            word += char
        }
    }
    if word == String(word.reversed()) {
        count += 1
    }
    return count
}
```swift
// Given the lengths of the three sides of a triangle. Return the area of
// the triangle rounded to 2 decimal points if the three sides form a valid triangle. 
// Otherwise return -1
// Three sides make a valid triangle when the sum of any two sides is greater 
// than the third side.
// Example:
// triangleArea(a: 3, b: 4, c: 5) == 6.0
// triangleArea(a: 1, b: 2, c: 10) == -1
func triangleArea(a: Int, b: Int, c: Int) -> Double {
    let s = (a + b + c) / 2.0
    let area = sqrt(s * (s - a) * (s - b) * (s - c))
    return area
}

// Given a string, return the number of vowels in the string.
// Example:
// vowels("aeiou") == 5
// vowels("abc") == 0
func vowels(str: String) -> Int {
    let vowels = "aeiou"
    var count = 0
    for char in str {
        if vowels.contains(char) {
            count += 1
        }
    }
    return count
}

// Given a string, return the number of consonants in the string.
// Example:
// consonants("abc") == 3
// consonants("aeiou") == 0
func consonants(str: String) -> Int {
    let vowels = "aeiou"
    var count = 0
    for char in str {
        if !vowels.contains(char) {
            count += 1
        }
    }
    return count
}

// Given a string, return the number of words in the string.
// Example:
// words("abc") == 1
// words("abc def") == 2
// words("abc def ghi") == 3
func words(str: String) -> Int {
    var count = 0
    var word = ""
    for char in str {
        if char == " " {
            count += 1
        } else {
            word += char
        }
    }
    return count + 1
}

// Given a string, return the number of words in the string that are palindromes.
// A palindrome is a word that reads the same backwards as forwards.
// Example:
// palindromes("abc") == 0
// palindromes("abc abc") == 1
// palindromes("abc abc abc") == 2
// palindromes("abc abc abc abc") == 3
func palindromes(str: String) -> Int {
    var count = 0
    var word = ""
    for char in str {
        if char == " " {
            if word == String(word.reversed()) {
                count += 1
            }
            word = ""
        } else {
            word += char
        }
    }
    if word == String(word.reversed()) {
        count += 1
    }
    return count
}

// Given a string, return the number of words in the string that are palindromes.
// A palindrome is a word that reads the same backwards as forwards.
// Example:
// palindromes("abc") == 0
// palindromes("abc abc") == 1
// palindromes("abc abc abc") == 2
// palindromes("abc abc abc abc") == 3
func palindromes(str: String) -> Int {
    var count = 0
    var word = ""
    for char in str {
        if char == " " {
            if word == String(word.reversed()) {
                count += 1
            }
            word = ""
        } else {
            word += char
        }
    }
    if word == String(word.reversed()) {
        count += 1
    }
    return count
}

// Given a string, return the number of words in the string that are palindromes.
// A palindrome is a word that reads the same backwards as forwards.
// Example:
// palindromes("abc") == 0
// palindromes("abc abc") == 1
// palindromes("abc abc abc") == 2
// palindromes("abc abc abc abc") == 3
func palindromes(str: String) -> Int {
    var count = 0
    var word = ""
    for char in str {
        if char == " " {
            if word == String(word.reversed()) {
                count += 1
            }
            word = ""
        } else {
            word += char
        }
    }
    if word == String(word.reversed()) {
        count += 1
    }
    return count
}

// Given a string, return the number of words in the string that are palindromes.
// A palindrome is a word that reads the same backwards as forwards.
// Example:
// palindromes("abc") == 0
// palindromes("abc
let s = (a + b + c) / 2.0 // binary operator '/' cannot be applied to operands of type 'Int' and 'Double'
let area = sqrt(s * (s - a) * (s - b) * (s - c)) // the compiler is unable to type-check this expression in reasonable time; try breaking up the expression into distinct sub-expressions
word += char // cannot convert value of type 'Character' to expected argument type 'String'
word += char // cannot convert value of type 'Character' to expected argument type 'String'

func triangleArea(a: Int, b: Int, c: Int) -> Double {
    let s = (a + b + c) / 2.0
    let area = sqrt(s * (s - a) * (s - b) * (s - c))
    return area
}

func countChar(str: String) -> Int {
    return str.filter { $0 == "a" }.count
}

func sum(arr: [Int]) -> Int {
    return arr.reduce(0, +)
}

func firstChar(str: String) -> String {
    return String(str.first!)
}

func lastChar(str: String) -> String {
    return String(str.last!)
}

func removeFirstChar(str: String) -> String {
    return String(str.dropFirst())
}

func removeLastChar(str: String) -> String {
    return String(str.dropLast())
}

func removeFirstAndLastChar(str: String) -> String {
    return String(str.dropFirst().dropLast())
}
```swift
// Given the lengths of the three sides of a triangle. Return the area of
// the triangle rounded to 2 decimal points if the three sides form a valid triangle. 
// Otherwise return -1
// Three sides make a valid triangle when the sum of any two sides is greater 
// than the third side.
// Example:
// triangleArea(a: 3, b: 4, c: 5) == 6.0
// triangleArea(a: 1, b: 2, c: 10) == -1
func triangleArea(a: Int, b: Int, c: Int) -> Double {
    let s = (a + b + c) / 2.0
    let area = sqrt(s * (s - a) * (s - b) * (s - c))
    return area
}

// Given a string, return the number of times the character 'a' appears in the string.
// Example:
// countChar("Hello") == 1
// countChar("Hello, World!") == 2
func countChar(str: String) -> Int {
    return str.filter { $0 == "a" }.count
}

// Given an array of integers, return the sum of all the integers.
// Example:
// sum([1, 2, 3, 4, 5]) == 15
// sum([10, 20, 30, 40, 50]) == 150
func sum(arr: [Int]) -> Int {
    return arr.reduce(0, +)
}

// Given a string, return the first character of the string.
// Example:
// firstChar("Hello") == "H"
// firstChar("Hello, World!") == "H"
func firstChar(str: String) -> String {
    return String(str.first!)
}

// Given a string, return the last character of the string.
// Example:
// lastChar("Hello") == "o"
// lastChar("Hello, World!") == "!"
func lastChar(str: String) -> String {
    return String(str.last!)
}

// Given a string, return the string with the first character removed.
// Example:
// removeFirstChar("Hello") == "ello"
// removeFirstChar("Hello, World!") == "ello, World!"
func removeFirstChar(str: String) -> String {
    return String(str.dropFirst())
}

// Given a string, return the string with the last character removed.
// Example:
// removeLastChar("Hello") == "Hel"
// removeLastChar("Hello, World!") == "Hello, Worl"
func removeLastChar(str: String) -> String {
    return String(str.dropLast())
}

// Given a string, return the string with the first and last characters removed.
// Example:
// removeFirstAndLastChar("Hello") == "ell"
// removeFirstAndLastChar("Hello, World!") == "ello, Worl"
func removeFirstAndLastChar(str: String) -> String {
    return String(str.dropFirst().dropLast())
}

// Given a string, return the string with the first character removed and the last character removed.
// Example:
// removeFirstAndLastChar("Hello") == "ell"
// removeFirstAndLastChar("Hello, World!") == "ello, Worl"
func removeFirstAndLastChar(str: String) -> String {
    return String(str.dropFirst().dropLast())
}

// Given a string, return the string with the first character removed and the last character removed.
// Example:
// removeFirstAndLastChar("Hello") == "ell"
// removeFirstAndLastChar("Hello, World!") == "ello, Worl"
func removeFirstAndLastChar(str: String) -> String {
    return String(str.dropFirst().dropLast())
}

// Given a string, return the string with the first character removed and the last character removed.
// Example:
// removeFirstAndLastChar("Hello") == "ell"
// removeFirstAndLastChar("Hello, World!") == "ello, Worl"
func removeFirstAndLastChar(str: String) -> String {
    return String(str.dropFirst().dropLast())
}

// Given a string, return the string with the first character removed and the last character removed.
// Example:
// removeFirstAndLastChar("Hello") == "ell"
// removeFirstAndLastChar("Hello, World!") == "ello, Worl"
func removeFirstAndLastChar(str: String) -> String {
    return String(str.dropFirst().dropLast())
}

// Given a string, return the string with the first character removed and the last character removed.
// Example:
// removeFirstAndLastChar("Hello") == "ell"
// removeFirstAndLastChar("Hello, World!") == "ello, Worl"
func removeFirstAndLastChar(str: String) -> String {
    return String(str.dropFirst().dropLast())
}

// Given a string, return the string with the
let s = (a + b + c) / 2.0 // binary operator '/' cannot be applied to operands of type 'Int' and 'Double'
let area = sqrt(s * (s - a) * (s - b) * (s - c)) // the compiler is unable to type-check this expression in reasonable time; try breaking up the expression into distinct sub-expressions

func triangleArea(a: Int, b: Int, c: Int) -> Double {
    let s = (a + b + c) / 2.0
    let area = sqrt(s * (s - a) * (s - b) * (s - c))
    return area
}
```swift
// Given the lengths of the three sides of a triangle. Return the area of
// the triangle rounded to 2 decimal points if the three sides form a valid triangle. 
// Otherwise return -1
// Three sides make a valid triangle when the sum of any two sides is greater 
// than the third side.
// Example:
// triangleArea(a: 3, b: 4, c: 5) == 6.0
// triangleArea(a: 1, b: 2, c: 10) == -1
func triangleArea(a: Int, b: Int, c: Int) -> Double {
    let s = (a + b + c) / 2.0
    let area = sqrt(s * (s - a) * (s - b) * (s - c))
    return area
}
<|file_separator|>
let s = (a + b + c) / 2.0 // binary operator '/' cannot be applied to operands of type 'Int' and 'Double'
let area = sqrt(s * (s - a) * (s - b) * (s - c)) // the compiler is unable to type-check this expression in reasonable time; try breaking up the expression into distinct sub-expressions

func triangleArea(a: Int, b: Int, c: Int) -> Double {
    if a + b > c && b + c > a && a + c > b {
        let s = (a + b + c) / 2
        return Double(sqrt(s * (s - a) * (s - b) * (s - c)))
    }
    return -1
}
```swift
// Given the lengths of the three sides of a triangle. Return the area of
// the triangle rounded to 2 decimal points if the three sides form a valid triangle. 
// Otherwise return -1
// Three sides make a valid triangle when the sum of any two sides is greater 
// than the third side.
// Example:
// triangleArea(a: 3, b: 4, c: 5) == 6.0
// triangleArea(a: 1, b: 2, c: 10) == -1
func triangleArea(a: Int, b: Int, c: Int) -> Double {
    if a + b > c && b + c > a && a + c > b {
        let s = (a + b + c) / 2
        return Double(sqrt(s * (s - a) * (s - b) * (s - c)))
    }
    return -1
}
<|file_separator|>
return Double(sqrt(s * (s - a) * (s - b) * (s - c))) // the compiler is unable to type-check this expression in reasonable time; try breaking up the expression into distinct sub-expressions

func willItFly(q: [Int], w: Int) -> Bool {
    // Write your code here
    var sum = 0
    var arr = q
    var max = 0
    for i in 0..<arr.count {
        sum += arr[i]
        if arr[i] > max {
            max = arr[i]
        }
    }
    if sum <= w && isPalindrome(arr) {
        return true
    }
    return false
}

func isPalindrome(_ arr: [Int]) -> Bool {
    var arr = arr
    for i in 0..<arr.count/2 {
        if arr[i] != arr[arr.count - i - 1] {
            return false
        }
    }
    return true
}
```swift
// Write a function that returns true if the object q will fly, and false otherwise.
// The object q will fly if it's balanced (it is a palindromic array) and the sum of its elements is less than or equal the maximum possible weight w.
// Example:
// # 1+2 is less than the maximum possible weight, but it's unbalanced.
// # it's balanced, but 3+2+3 is more than the maximum possible weight.
// # 3+2+3 is less than the maximum possible weight, and it's balanced.
// # 3 is less than the maximum possible weight, and it's balanced.
// willItFly(q: [1, 2], w: 5) == false
// willItFly(q: [3, 2, 3], w: 1) == false
// willItFly(q: [3, 2, 3], w: 9) == true
// willItFly(q: [3], w: 5) == true
func willItFly(q: [Int], w: Int) -> Bool {
    // Write your code here
    var sum = 0
    var arr = q
    var max = 0
    for i in 0..<arr.count {
        sum += arr[i]
        if arr[i] > max {
            max = arr[i]
        }
    }
    if sum <= w && isPalindrome(arr) {
        return true
    }
    return false
}

func isPalindrome(_ arr: [Int]) -> Bool {
    var arr = arr
    for i in 0..<arr.count/2 {
        if arr[i] != arr[arr.count - i - 1] {
            return false
        }
    }
    return true
}
<|file_separator|>
var arr = q // variable 'arr' was never mutated; consider changing to 'let' constant
var arr = arr // variable 'arr' was never mutated; consider changing to 'let' constant

func willItFly(q: [Int], w: Int) -> Bool {
    var isBalanced = true
    var isLessThanMax = true
    var sum = 0
    for i in 0..<q.count {
        if q[i] != q[q.count-i-1] {
            isBalanced = false
        }
        sum += q[i]
    }
    if sum > w {
        isLessThanMax = false
    }
    return isBalanced && isLessThanMax
}
```swift
// Write a function that returns true if the object q will fly, and false otherwise.
// The object q will fly if it's balanced (it is a palindromic array) and the sum of its elements is less than or equal the maximum possible weight w.
// Example:
// # 1+2 is less than the maximum possible weight, but it's unbalanced.
// # it's balanced, but 3+2+3 is more than the maximum possible weight.
// # 3+2+3 is less than the maximum possible weight, and it's balanced.
// # 3 is less than the maximum possible weight, and it's balanced.
// willItFly(q: [1, 2], w: 5) == false
// willItFly(q: [3, 2, 3], w: 1) == false
// willItFly(q: [3, 2, 3], w: 9) == true
// willItFly(q: [3], w: 5) == true
func willItFly(q: [Int], w: Int) -> Bool {
    var isBalanced = true
    var isLessThanMax = true
    var sum = 0
    for i in 0..<q.count {
        if q[i] != q[q.count-i-1] {
            isBalanced = false
        }
        sum += q[i]
    }
    if sum > w {
        isLessThanMax = false
    }
    return isBalanced && isLessThanMax
}
<|file_separator|>

func willItFly(q: [Int], w: Int) -> Bool {
    var isBalanced = true
    var isWeight = true
    var sum = 0
    for i in 0..<q.count {
        if q[i] == q[q.count - i - 1] {
            isBalanced = true
        } else {
            isBalanced = false
            break
        }
        sum += q[i]
        if sum > w {
            isWeight = false
            break
        }
    }
    return isBalanced && isWeight
}
```swift
// Write a function that returns true if the object q will fly, and false otherwise.
// The object q will fly if it's balanced (it is a palindromic array) and the sum of its elements is less than or equal the maximum possible weight w.
// Example:
// # 1+2 is less than the maximum possible weight, but it's unbalanced.
// # it's balanced, but 3+2+3 is more than the maximum possible weight.
// # 3+2+3 is less than the maximum possible weight, and it's balanced.
// # 3 is less than the maximum possible weight, and it's balanced.
// willItFly(q: [1, 2], w: 5) == false
// willItFly(q: [3, 2, 3], w: 1) == false
// willItFly(q: [3, 2, 3], w: 9) == true
// willItFly(q: [3], w: 5) == true
func willItFly(q: [Int], w: Int) -> Bool {
    var isBalanced = true
    var isWeight = true
    var sum = 0
    for i in 0..<q.count {
        if q[i] == q[q.count - i - 1] {
            isBalanced = true
        } else {
            isBalanced = false
            break
        }
        sum += q[i]
        if sum > w {
            isWeight = false
            break
        }
    }
    return isBalanced && isWeight
}
<|file_separator|>

func willItFly(q: [Int], w: Int) -> Bool {
    var sum = 0
    var arr = q
    arr.sort()
    for i in 0..<arr.count {
        if arr[i] > w {
            return false
        }
        sum += arr[i]
        if sum > w {
            return false
        }
    }
    return true
}
```swift
// Write a function that returns true if the object q will fly, and false otherwise.
// The object q will fly if it's balanced (it is a palindromic array) and the sum of its elements is less than or equal the maximum possible weight w.
// Example:
// # 1+2 is less than the maximum possible weight, but it's unbalanced.
// # it's balanced, but 3+2+3 is more than the maximum possible weight.
// # 3+2+3 is less than the maximum possible weight, and it's balanced.
// # 3 is less than the maximum possible weight, and it's balanced.
// willItFly(q: [1, 2], w: 5) == false
// willItFly(q: [3, 2, 3], w: 1) == false
// willItFly(q: [3, 2, 3], w: 9) == true
// willItFly(q: [3], w: 5) == true
func willItFly(q: [Int], w: Int) -> Bool {
    var sum = 0
    var arr = q
    arr.sort()
    for i in 0..<arr.count {
        if arr[i] > w {
            return false
        }
        sum += arr[i]
        if sum > w {
            return false
        }
    }
    return true
}
<|file_separator|>
 // XCTAssertTrue failed

func willItFly(q: [Int], w: Int) -> Bool {
    // Write your code here
    var sum = 0
    var isBalanced = true
    for i in 0..<q.count {
        if q[i] == q[q.count - i - 1] {
            sum += q[i]
        } else {
            isBalanced = false
            break
        }
    }
    if isBalanced && sum <= w {
        return true
    } else {
        return false
    }
}
```swift
// Write a function that returns true if the object q will fly, and false otherwise.
// The object q will fly if it's balanced (it is a palindromic array) and the sum of its elements is less than or equal the maximum possible weight w.
// Example:
// # 1+2 is less than the maximum possible weight, but it's unbalanced.
// # it's balanced, but 3+2+3 is more than the maximum possible weight.
// # 3+2+3 is less than the maximum possible weight, and it's balanced.
// # 3 is less than the maximum possible weight, and it's balanced.
// willItFly(q: [1, 2], w: 5) == false
// willItFly(q: [3, 2, 3], w: 1) == false
// willItFly(q: [3, 2, 3], w: 9) == true
// willItFly(q: [3], w: 5) == true
func willItFly(q: [Int], w: Int) -> Bool {
    // Write your code here
    var sum = 0
    var isBalanced = true
    for i in 0..<q.count {
        if q[i] == q[q.count - i - 1] {
            sum += q[i]
        } else {
            isBalanced = false
            break
        }
    }
    if isBalanced && sum <= w {
        return true
    } else {
        return false
    }
}
<|file_separator|>

func willItFly(q: [Int], w: Int) -> Bool {
    var isBalanced = true
    var sum = 0
    for i in 0..<q.count {
        if q[i] != q[q.count - i - 1] {
            isBalanced = false
            break
        }
        sum += q[i]
    }
    if isBalanced && sum > w {
        return false
    }
    return true
}
```swift
// Write a function that returns true if the object q will fly, and false otherwise.
// The object q will fly if it's balanced (it is a palindromic array) and the sum of its elements is less than or equal the maximum possible weight w.
// Example:
// # 1+2 is less than the maximum possible weight, but it's unbalanced.
// # it's balanced, but 3+2+3 is more than the maximum possible weight.
// # 3+2+3 is less than the maximum possible weight, and it's balanced.
// # 3 is less than the maximum possible weight, and it's balanced.
// willItFly(q: [1, 2], w: 5) == false
// willItFly(q: [3, 2, 3], w: 1) == false
// willItFly(q: [3, 2, 3], w: 9) == true
// willItFly(q: [3], w: 5) == true
func willItFly(q: [Int], w: Int) -> Bool {
    var isBalanced = true
    var sum = 0
    for i in 0..<q.count {
        if q[i] != q[q.count - i - 1] {
            isBalanced = false
            break
        }
        sum += q[i]
    }
    if isBalanced && sum > w {
        return false
    }
    return true
}
<|file_separator|>
 // XCTAssertTrue failed

func willItFly(q: [Int], w: Int) -> Bool {
    if q.count == 1 {
        return true
    }
    var sum = 0
    var isBalanced = true
    for i in 0..<q.count {
        sum += q[i]
        if sum > w {
            isBalanced = false
            break
        }
    }
    if isBalanced {
        return true
    }
    for i in 0..<q.count {
        var newQ = q
        newQ.remove(at: i)
        if willItFly(q: newQ, w: w) {
            return true
        }
    }
    return false
}
```swift
// Write a function that returns true if the object q will fly, and false otherwise.
// The object q will fly if it's balanced (it is a palindromic array) and the sum of its elements is less than or equal the maximum possible weight w.
// Example:
// # 1+2 is less than the maximum possible weight, but it's unbalanced.
// # it's balanced, but 3+2+3 is more than the maximum possible weight.
// # 3+2+3 is less than the maximum possible weight, and it's balanced.
// # 3 is less than the maximum possible weight, and it's balanced.
// willItFly(q: [1, 2], w: 5) == false
// willItFly(q: [3, 2, 3], w: 1) == false
// willItFly(q: [3, 2, 3], w: 9) == true
// willItFly(q: [3], w: 5) == true
func willItFly(q: [Int], w: Int) -> Bool {
    if q.count == 1 {
        return true
    }
    var sum = 0
    var isBalanced = true
    for i in 0..<q.count {
        sum += q[i]
        if sum > w {
            isBalanced = false
            break
        }
    }
    if isBalanced {
        return true
    }
    for i in 0..<q.count {
        var newQ = q
        newQ.remove(at: i)
        if willItFly(q: newQ, w: w) {
            return true
        }
    }
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func willItFly(q: [Int], w: Int) -> Bool {
    // Write your code here
    var arr = q
    var sum = 0
    var max = 0
    for i in 0..<arr.count {
        sum += arr[i]
        if arr[i] > max {
            max = arr[i]
        }
    }
    if sum > w {
        return false
    }
    if max < sum {
        return false
    }
    return true
}
```swift
// Write a function that returns true if the object q will fly, and false otherwise.
// The object q will fly if it's balanced (it is a palindromic array) and the sum of its elements is less than or equal the maximum possible weight w.
// Example:
// # 1+2 is less than the maximum possible weight, but it's unbalanced.
// # it's balanced, but 3+2+3 is more than the maximum possible weight.
// # 3+2+3 is less than the maximum possible weight, and it's balanced.
// # 3 is less than the maximum possible weight, and it's balanced.
// willItFly(q: [1, 2], w: 5) == false
// willItFly(q: [3, 2, 3], w: 1) == false
// willItFly(q: [3, 2, 3], w: 9) == true
// willItFly(q: [3], w: 5) == true
func willItFly(q: [Int], w: Int) -> Bool {
    // Write your code here
    var arr = q
    var sum = 0
    var max = 0
    for i in 0..<arr.count {
        sum += arr[i]
        if arr[i] > max {
            max = arr[i]
        }
    }
    if sum > w {
        return false
    }
    if max < sum {
        return false
    }
    return true
}
<|file_separator|>
var arr = q // variable 'arr' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func willItFly(q: [Int], w: Int) -> Bool {
    var isBalanced = true
    var isWeight = true
    var sum = 0
    for i in 0..<q.count {
        if q[i] != q[q.count - 1 - i] {
            isBalanced = false
            break
        }
        sum += q[i]
    }
    if sum > w {
        isWeight = false
    }
    return isBalanced && isWeight
}
```swift
// Write a function that returns true if the object q will fly, and false otherwise.
// The object q will fly if it's balanced (it is a palindromic array) and the sum of its elements is less than or equal the maximum possible weight w.
// Example:
// # 1+2 is less than the maximum possible weight, but it's unbalanced.
// # it's balanced, but 3+2+3 is more than the maximum possible weight.
// # 3+2+3 is less than the maximum possible weight, and it's balanced.
// # 3 is less than the maximum possible weight, and it's balanced.
// willItFly(q: [1, 2], w: 5) == false
// willItFly(q: [3, 2, 3], w: 1) == false
// willItFly(q: [3, 2, 3], w: 9) == true
// willItFly(q: [3], w: 5) == true
func willItFly(q: [Int], w: Int) -> Bool {
    var isBalanced = true
    var isWeight = true
    var sum = 0
    for i in 0..<q.count {
        if q[i] != q[q.count - 1 - i] {
            isBalanced = false
            break
        }
        sum += q[i]
    }
    if sum > w {
        isWeight = false
    }
    return isBalanced && isWeight
}
<|file_separator|>

func willItFly(q: [Int], w: Int) -> Bool {
    // your code here
    var arr = q
    arr.sort()
    var sum = 0
    for i in 0..<arr.count {
        sum += arr[i]
    }
    if sum > w {
        return false
    }
    var isPal = true
    for i in 0..<arr.count/2 {
        if arr[i] != arr[arr.count-i-1] {
            isPal = false
            break
        }
    }
    if isPal {
        return true
    }
    return false
}
```swift
// Write a function that returns true if the object q will fly, and false otherwise.
// The object q will fly if it's balanced (it is a palindromic array) and the sum of its elements is less than or equal the maximum possible weight w.
// Example:
// # 1+2 is less than the maximum possible weight, but it's unbalanced.
// # it's balanced, but 3+2+3 is more than the maximum possible weight.
// # 3+2+3 is less than the maximum possible weight, and it's balanced.
// # 3 is less than the maximum possible weight, and it's balanced.
// willItFly(q: [1, 2], w: 5) == false
// willItFly(q: [3, 2, 3], w: 1) == false
// willItFly(q: [3, 2, 3], w: 9) == true
// willItFly(q: [3], w: 5) == true
func willItFly(q: [Int], w: Int) -> Bool {
    // your code here
    var arr = q
    arr.sort()
    var sum = 0
    for i in 0..<arr.count {
        sum += arr[i]
    }
    if sum > w {
        return false
    }
    var isPal = true
    for i in 0..<arr.count/2 {
        if arr[i] != arr[arr.count-i-1] {
            isPal = false
            break
        }
    }
    if isPal {
        return true
    }
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func smallestChange(arr: [Int]) -> Int {
  // your code here
}

func smallestPalindrome(str: String) -> Int {
  // your code here
}

func smallestPalindrome(arr: [Int]) -> Int {
  // your code here
}
```swift
// Given an array arr of integers, find the minimum number of elements that
// need to be changed to make the array palindromic. A palindromic array is an array that
// is read the same backwards and forwards. In one change, you can change one element to any other element.
// For example:
// smallestChange(arr: [1, 2, 3, 5, 4, 7, 9, 6]) == 4
// smallestChange(arr: [1, 2, 3, 4, 3, 2, 2]) == 1
// smallestChange(arr: [1, 2, 3, 2, 1]) == 0
func smallestChange(arr: [Int]) -> Int {
  // your code here
}

// Given a string of characters, find the minimum number of characters that need to be removed
// to make the string a palindrome. A palindrome is a string that reads the same backwards and forwards.
// For example:
// smallestPalindrome(str: "abcdcba") == 0
// smallestPalindrome(str: "abcdcba") == 1
// smallestPalindrome(str: "abcdcba") == 2
func smallestPalindrome(str: String) -> Int {
  // your code here
}

// Given an array of integers, find the minimum number of elements that
// need to be removed to make the array a palindrome. A palindrome is a string
// that reads the same backwards and forwards. In one change, you can remove
// one element from the array.
// For example:
// smallestPalindrome(arr: [1, 2, 3, 5, 4, 7, 9, 6]) == 4
// smallestPalindrome(arr: [1, 2, 3, 4, 3, 2, 2]) == 1
// smallestPalindrome(arr: [1, 2, 3, 2, 1]) == 0
func smallestPalindrome(arr: [Int]) -> Int {
  // your code here
}
<|file_separator|>
} // missing return in global function expected to return 'Int'
} // missing return in global function expected to return 'Int'
} // missing return in global function expected to return 'Int'

func smallestChange(arr: [Int]) -> Int {
    var arr = arr
    var count = 0
    var i = 0
    var j = arr.count - 1
    while i < j {
        if arr[i] == arr[j] {
            i += 1
            j -= 1
        } else {
            arr[i] = arr[j]
            count += 1
            i += 1
            j -= 1
        }
    }
    return count
}
```swift
// Given an array arr of integers, find the minimum number of elements that
// need to be changed to make the array palindromic. A palindromic array is an array that
// is read the same backwards and forwards. In one change, you can change one element to any other element.
// For example:
// smallestChange(arr: [1, 2, 3, 5, 4, 7, 9, 6]) == 4
// smallestChange(arr: [1, 2, 3, 4, 3, 2, 2]) == 1
// smallestChange(arr: [1, 2, 3, 2, 1]) == 0
func smallestChange(arr: [Int]) -> Int {
    var arr = arr
    var count = 0
    var i = 0
    var j = arr.count - 1
    while i < j {
        if arr[i] == arr[j] {
            i += 1
            j -= 1
        } else {
            arr[i] = arr[j]
            count += 1
            i += 1
            j -= 1
        }
    }
    return count
}
<|file_separator|>

func smallestChange(arr: [Int]) -> Int {
    var arr = arr
    var count = 0
    var i = 0
    var j = arr.count - 1
    while i < j {
        if arr[i] == arr[j] {
            i += 1
            j -= 1
        } else {
            arr[i] = arr[j]
            count += 1
            i += 1
        }
    }
    return count
}
```swift
// Given an array arr of integers, find the minimum number of elements that
// need to be changed to make the array palindromic. A palindromic array is an array that
// is read the same backwards and forwards. In one change, you can change one element to any other element.
// For example:
// smallestChange(arr: [1, 2, 3, 5, 4, 7, 9, 6]) == 4
// smallestChange(arr: [1, 2, 3, 4, 3, 2, 2]) == 1
// smallestChange(arr: [1, 2, 3, 2, 1]) == 0
func smallestChange(arr: [Int]) -> Int {
    var arr = arr
    var count = 0
    var i = 0
    var j = arr.count - 1
    while i < j {
        if arr[i] == arr[j] {
            i += 1
            j -= 1
        } else {
            arr[i] = arr[j]
            count += 1
            i += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func smallestChange(arr: [Int]) -> Int {
    // Write your code here
    var arr = arr
    var count = 0
    var i = 0
    var j = arr.count - 1
    while i < j {
        if arr[i] == arr[j] {
            i += 1
            j -= 1
        } else {
            arr[i] = arr[j]
            count += 1
            i += 1
        }
    }
    return count
}
```swift
// Given an array arr of integers, find the minimum number of elements that
// need to be changed to make the array palindromic. A palindromic array is an array that
// is read the same backwards and forwards. In one change, you can change one element to any other element.
// For example:
// smallestChange(arr: [1, 2, 3, 5, 4, 7, 9, 6]) == 4
// smallestChange(arr: [1, 2, 3, 4, 3, 2, 2]) == 1
// smallestChange(arr: [1, 2, 3, 2, 1]) == 0
func smallestChange(arr: [Int]) -> Int {
    // Write your code here
    var arr = arr
    var count = 0
    var i = 0
    var j = arr.count - 1
    while i < j {
        if arr[i] == arr[j] {
            i += 1
            j -= 1
        } else {
            arr[i] = arr[j]
            count += 1
            i += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func smallestChange(arr: [Int]) -> Int {
    var arr = arr
    var count = 0
    var i = 0
    var j = arr.count - 1
    while i < j {
        if arr[i] == arr[j] {
            i += 1
            j -= 1
        } else if arr[i] > arr[j] {
            arr[j] = arr[i]
            count += 1
            j -= 1
        } else {
            arr[i] = arr[j]
            count += 1
            i += 1
        }
    }
    return count
}
```swift
// Given an array arr of integers, find the minimum number of elements that
// need to be changed to make the array palindromic. A palindromic array is an array that
// is read the same backwards and forwards. In one change, you can change one element to any other element.
// For example:
// smallestChange(arr: [1, 2, 3, 5, 4, 7, 9, 6]) == 4
// smallestChange(arr: [1, 2, 3, 4, 3, 2, 2]) == 1
// smallestChange(arr: [1, 2, 3, 2, 1]) == 0
func smallestChange(arr: [Int]) -> Int {
    var arr = arr
    var count = 0
    var i = 0
    var j = arr.count - 1
    while i < j {
        if arr[i] == arr[j] {
            i += 1
            j -= 1
        } else if arr[i] > arr[j] {
            arr[j] = arr[i]
            count += 1
            j -= 1
        } else {
            arr[i] = arr[j]
            count += 1
            i += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func smallestChange(arr: [Int]) -> Int {
    var arr = arr
    var count = 0
    var i = 0
    var j = arr.count - 1
    while i < j {
        if arr[i] == arr[j] {
            i += 1
            j -= 1
        } else {
            if arr[i] > arr[j] {
                arr[j] = arr[i]
                count += 1
                j -= 1
            } else {
                arr[i] = arr[j]
                count += 1
                i += 1
            }
        }
    }
    return count
}
```swift
// Given an array arr of integers, find the minimum number of elements that
// need to be changed to make the array palindromic. A palindromic array is an array that
// is read the same backwards and forwards. In one change, you can change one element to any other element.
// For example:
// smallestChange(arr: [1, 2, 3, 5, 4, 7, 9, 6]) == 4
// smallestChange(arr: [1, 2, 3, 4, 3, 2, 2]) == 1
// smallestChange(arr: [1, 2, 3, 2, 1]) == 0
func smallestChange(arr: [Int]) -> Int {
    var arr = arr
    var count = 0
    var i = 0
    var j = arr.count - 1
    while i < j {
        if arr[i] == arr[j] {
            i += 1
            j -= 1
        } else {
            if arr[i] > arr[j] {
                arr[j] = arr[i]
                count += 1
                j -= 1
            } else {
                arr[i] = arr[j]
                count += 1
                i += 1
            }
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func smallestChange(arr: [Int]) -> Int {
    var arr = arr
    var count = 0
    var i = 0
    var j = arr.count - 1
    while i < j {
        if arr[i] == arr[j] {
            i += 1
            j -= 1
        } else if arr[i] < arr[j] {
            arr[i] += 1
            count += 1
            i += 1
        } else {
            arr[j] += 1
            count += 1
            j -= 1
        }
    }
    return count
}

func maxSum(arr: [Int], k: Int) -> Int {
    var maxSum = 0
    var sum = 0
    for i in 0..<k {
        sum += arr[i]
    }
    maxSum = sum
    for i in k..<arr.count {
        sum += arr[i] - arr[i - k]
        maxSum = max(maxSum, sum)
    }
    return maxSum
}

func maxProduct(arr: [Int]) -> Int {
    var maxProduct = 0
    for i in 0..<arr.count {
        for j in i+1..<arr.count {
            maxProduct = max(maxProduct, arr[i] * arr[j])
        }
    }
    return maxProduct
}
```swift
// Given an array arr of integers, find the minimum number of elements that
// need to be changed to make the array palindromic. A palindromic array is an array that
// is read the same backwards and forwards. In one change, you can change one element to any other element.
// For example:
// smallestChange(arr: [1, 2, 3, 5, 4, 7, 9, 6]) == 4
// smallestChange(arr: [1, 2, 3, 4, 3, 2, 2]) == 1
// smallestChange(arr: [1, 2, 3, 2, 1]) == 0
func smallestChange(arr: [Int]) -> Int {
    var arr = arr
    var count = 0
    var i = 0
    var j = arr.count - 1
    while i < j {
        if arr[i] == arr[j] {
            i += 1
            j -= 1
        } else if arr[i] < arr[j] {
            arr[i] += 1
            count += 1
            i += 1
        } else {
            arr[j] += 1
            count += 1
            j -= 1
        }
    }
    return count
}

// Given an array arr of integers, find the maximum sum of any contiguous subarray of size k.
// For example:
// maxSum(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], k: 3) == 21
// maxSum(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], k: 4) == 25
// maxSum(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], k: 5) == 30
func maxSum(arr: [Int], k: Int) -> Int {
    var maxSum = 0
    var sum = 0
    for i in 0..<k {
        sum += arr[i]
    }
    maxSum = sum
    for i in k..<arr.count {
        sum += arr[i] - arr[i - k]
        maxSum = max(maxSum, sum)
    }
    return maxSum
}

// Given an array arr of integers, find the maximum product that can be formed by any two elements.
// For example:
// maxProduct(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 90
// maxProduct(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 90
// maxProduct(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 90
func maxProduct(arr: [Int]) -> Int {
    var maxProduct = 0
    for i in 0..<arr.count {
        for j in i+1..<arr.count {
            maxProduct = max(maxProduct, arr[i] * arr[j])
        }
    }
    return maxProduct
}

// Given an array arr of integers, find the maximum product that can be formed by any two elements.
// For example:
// maxProduct(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 90
// maxProduct(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 90
// maxProduct(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 90
func maxProduct(arr: [Int]) -> Int {
    var maxProduct = 0
    for i in 0..<arr.count {
        for j in i+1..<arr.count {
            maxProduct = max(maxProduct, arr[i] * arr[j])
        }
    }
    return maxProduct
}

// Given an array arr of integers, find the maximum product that can be formed by any two elements.
// For example:
// maxProduct(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 90
// maxProduct(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 90
// maxProduct(arr: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) ==
 // XCTAssertTrue failed

func smallestChange(arr: [Int]) -> Int {
    var arr = arr
    var count = 0
    var i = 0
    while i < arr.count {
        if arr[i] != arr.count - i - 1 {
            arr[i] = arr.count - i - 1
            count += 1
        }
        i += 1
    }
    return count
}
```swift
// Given an array arr of integers, find the minimum number of elements that
// need to be changed to make the array palindromic. A palindromic array is an array that
// is read the same backwards and forwards. In one change, you can change one element to any other element.
// For example:
// smallestChange(arr: [1, 2, 3, 5, 4, 7, 9, 6]) == 4
// smallestChange(arr: [1, 2, 3, 4, 3, 2, 2]) == 1
// smallestChange(arr: [1, 2, 3, 2, 1]) == 0
func smallestChange(arr: [Int]) -> Int {
    var arr = arr
    var count = 0
    var i = 0
    while i < arr.count {
        if arr[i] != arr.count - i - 1 {
            arr[i] = arr.count - i - 1
            count += 1
        }
        i += 1
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func smallestChange(arr: [Int]) -> Int {
    var arr = arr
    var count = 0
    var i = 0
    var j = arr.count - 1
    while i < j {
        if arr[i] == arr[j] {
            i += 1
            j -= 1
        } else if arr[i] < arr[j] {
            arr[i] += 1
            count += 1
            i += 1
        } else {
            arr[j] += 1
            count += 1
            j -= 1
        }
    }
    return count
}
```swift
// Given an array arr of integers, find the minimum number of elements that
// need to be changed to make the array palindromic. A palindromic array is an array that
// is read the same backwards and forwards. In one change, you can change one element to any other element.
// For example:
// smallestChange(arr: [1, 2, 3, 5, 4, 7, 9, 6]) == 4
// smallestChange(arr: [1, 2, 3, 4, 3, 2, 2]) == 1
// smallestChange(arr: [1, 2, 3, 2, 1]) == 0
func smallestChange(arr: [Int]) -> Int {
    var arr = arr
    var count = 0
    var i = 0
    var j = arr.count - 1
    while i < j {
        if arr[i] == arr[j] {
            i += 1
            j -= 1
        } else if arr[i] < arr[j] {
            arr[i] += 1
            count += 1
            i += 1
        } else {
            arr[j] += 1
            count += 1
            j -= 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func smallestChange(arr: [Int]) -> Int {
    var arr = arr
    var count = 0
    var i = 0
    var j = arr.count - 1
    while i < j {
        if arr[i] == arr[j] {
            i += 1
            j -= 1
        } else if arr[i] > arr[j] {
            arr[j] = arr[i]
            count += 1
            j -= 1
        } else {
            arr[i] = arr[j]
            count += 1
            i += 1
        }
    }
    return count
}
```swift
// Given an array arr of integers, find the minimum number of elements that
// need to be changed to make the array palindromic. A palindromic array is an array that
// is read the same backwards and forwards. In one change, you can change one element to any other element.
// For example:
// smallestChange(arr: [1, 2, 3, 5, 4, 7, 9, 6]) == 4
// smallestChange(arr: [1, 2, 3, 4, 3, 2, 2]) == 1
// smallestChange(arr: [1, 2, 3, 2, 1]) == 0
func smallestChange(arr: [Int]) -> Int {
    var arr = arr
    var count = 0
    var i = 0
    var j = arr.count - 1
    while i < j {
        if arr[i] == arr[j] {
            i += 1
            j -= 1
        } else if arr[i] > arr[j] {
            arr[j] = arr[i]
            count += 1
            j -= 1
        } else {
            arr[i] = arr[j]
            count += 1
            i += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var lst1 = lst1
    var lst2 = lst2
    var result = [String]()
    var count = 0
    for i in 0..<lst1.count {
        for j in 0..<lst2.count {
            if lst1[i].count + lst2[j].count < lst1[i].count {
                result.append(lst1[i])
                count += 1
                break
            }
        }
    }
    if lst1.count == count {
        return lst1
    } else {
        return lst2
    }
}
```swift
// Write a function that accepts two arrays of strings and returns the array that has 
// total number of chars in the all strings of the array less than the other array.
// if the two arrays have the same number of chars, return the first array.
// Examples
// totalMatch(lst1: [] as [String], lst2: [] as [String]) == [] as [String]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "Hi"]) == ["hI", "Hi"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hi", "hi", "admin", "project"]) == ["hi", "admin"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "hi", "hi"]) == ["hI", "hi", "hi"]
// totalMatch(lst1: ["4"], lst2: ["1", "2", "3", "4", "5"]) == ["4"]
func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var lst1 = lst1
    var lst2 = lst2
    var result = [String]()
    var count = 0
    for i in 0..<lst1.count {
        for j in 0..<lst2.count {
            if lst1[i].count + lst2[j].count < lst1[i].count {
                result.append(lst1[i])
                count += 1
                break
            }
        }
    }
    if lst1.count == count {
        return lst1
    } else {
        return lst2
    }
}
<|file_separator|>
var lst1 = lst1 // variable 'lst1' was never mutated; consider changing to 'let' constant
var lst2 = lst2 // variable 'lst2' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var result = [String]()
    for i in 0..<lst1.count {
        for j in 0..<lst2.count {
            if lst1[i].count + lst2[j].count < lst1[i].count + lst2[j].count {
                result.append(lst1[i])
            } else if lst1[i].count + lst2[j].count == lst1[i].count + lst2[j].count {
                result.append(lst1[i])
            }
        }
    }
    return result
}
```swift
// Write a function that accepts two arrays of strings and returns the array that has 
// total number of chars in the all strings of the array less than the other array.
// if the two arrays have the same number of chars, return the first array.
// Examples
// totalMatch(lst1: [] as [String], lst2: [] as [String]) == [] as [String]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "Hi"]) == ["hI", "Hi"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hi", "hi", "admin", "project"]) == ["hi", "admin"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "hi", "hi"]) == ["hI", "hi", "hi"]
// totalMatch(lst1: ["4"], lst2: ["1", "2", "3", "4", "5"]) == ["4"]
func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var result = [String]()
    for i in 0..<lst1.count {
        for j in 0..<lst2.count {
            if lst1[i].count + lst2[j].count < lst1[i].count + lst2[j].count {
                result.append(lst1[i])
            } else if lst1[i].count + lst2[j].count == lst1[i].count + lst2[j].count {
                result.append(lst1[i])
            }
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var lst3 = [String]()
    var lst4 = [String]()
    var lst5 = [String]()
    for i in 0..<lst1.count {
        for j in 0..<lst2.count {
            if lst1[i].count == lst2[j].count {
                lst3.append(lst1[i])
                lst4.append(lst2[j])
            }
        }
    }
    for i in 0..<lst3.count {
        for j in 0..<lst4.count {
            if lst3[i] == lst4[j] {
                lst5.append(lst3[i])
            }
        }
    }
    return lst5
}
```swift
// Write a function that accepts two arrays of strings and returns the array that has 
// total number of chars in the all strings of the array less than the other array.
// if the two arrays have the same number of chars, return the first array.
// Examples
// totalMatch(lst1: [] as [String], lst2: [] as [String]) == [] as [String]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "Hi"]) == ["hI", "Hi"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hi", "hi", "admin", "project"]) == ["hi", "admin"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "hi", "hi"]) == ["hI", "hi", "hi"]
// totalMatch(lst1: ["4"], lst2: ["1", "2", "3", "4", "5"]) == ["4"]
func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var lst3 = [String]()
    var lst4 = [String]()
    var lst5 = [String]()
    for i in 0..<lst1.count {
        for j in 0..<lst2.count {
            if lst1[i].count == lst2[j].count {
                lst3.append(lst1[i])
                lst4.append(lst2[j])
            }
        }
    }
    for i in 0..<lst3.count {
        for j in 0..<lst4.count {
            if lst3[i] == lst4[j] {
                lst5.append(lst3[i])
            }
        }
    }
    return lst5
}
<|file_separator|>
 // XCTAssertTrue failed

func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var lst3 = [String]()
    var lst4 = [String]()
    for i in 0..<lst1.count {
        for j in 0..<lst2.count {
            if lst1[i].count + lst2[j].count < lst3.count {
                lst3.append(lst1[i])
            }
        }
    }
    for i in 0..<lst2.count {
        for j in 0..<lst1.count {
            if lst2[i].count + lst1[j].count < lst4.count {
                lst4.append(lst2[i])
            }
        }
    }
    if lst3.count == lst4.count {
        return lst1
    } else if lst3.count < lst4.count {
        return lst3
    } else {
        return lst4
    }
}
```swift
// Write a function that accepts two arrays of strings and returns the array that has 
// total number of chars in the all strings of the array less than the other array.
// if the two arrays have the same number of chars, return the first array.
// Examples
// totalMatch(lst1: [] as [String], lst2: [] as [String]) == [] as [String]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "Hi"]) == ["hI", "Hi"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hi", "hi", "admin", "project"]) == ["hi", "admin"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "hi", "hi"]) == ["hI", "hi", "hi"]
// totalMatch(lst1: ["4"], lst2: ["1", "2", "3", "4", "5"]) == ["4"]
func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var lst3 = [String]()
    var lst4 = [String]()
    for i in 0..<lst1.count {
        for j in 0..<lst2.count {
            if lst1[i].count + lst2[j].count < lst3.count {
                lst3.append(lst1[i])
            }
        }
    }
    for i in 0..<lst2.count {
        for j in 0..<lst1.count {
            if lst2[i].count + lst1[j].count < lst4.count {
                lst4.append(lst2[i])
            }
        }
    }
    if lst3.count == lst4.count {
        return lst1
    } else if lst3.count < lst4.count {
        return lst3
    } else {
        return lst4
    }
}
<|file_separator|>
 // XCTAssertTrue failed

func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var result = [String]()
    for i in 0..<lst1.count {
        for j in 0..<lst2.count {
            if lst1[i].count + lst2[j].count < lst1.count + lst2.count {
                result.append(lst1[i])
            }
        }
    }
    return result
}
```swift
// Write a function that accepts two arrays of strings and returns the array that has 
// total number of chars in the all strings of the array less than the other array.
// if the two arrays have the same number of chars, return the first array.
// Examples
// totalMatch(lst1: [] as [String], lst2: [] as [String]) == [] as [String]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "Hi"]) == ["hI", "Hi"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hi", "hi", "admin", "project"]) == ["hi", "admin"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "hi", "hi"]) == ["hI", "hi", "hi"]
// totalMatch(lst1: ["4"], lst2: ["1", "2", "3", "4", "5"]) == ["4"]
func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var result = [String]()
    for i in 0..<lst1.count {
        for j in 0..<lst2.count {
            if lst1[i].count + lst2[j].count < lst1.count + lst2.count {
                result.append(lst1[i])
            }
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var result = [String]()
    var lst1 = lst1
    var lst2 = lst2
    var lst1_count = 0
    var lst2_count = 0
    for i in 0..<lst1.count {
        lst1_count = lst1_count + lst1[i].count
    }
    for i in 0..<lst2.count {
        lst2_count = lst2_count + lst2[i].count
    }
    if lst1_count > lst2_count {
        for i in 0..<lst2.count {
            if lst2[i].count < lst1[i].count {
                result.append(lst2[i])
            }
        }
    } else if lst2_count > lst1_count {
        for i in 0..<lst1.count {
            if lst1[i].count < lst2[i].count {
                result.append(lst1[i])
            }
        }
    } else {
        for i in 0..<lst1.count {
            if lst1[i].count < lst2[i].count {
                result.append(lst1[i])
            } else if lst1[i].count > lst2[i].count {
                result.append(lst2[i])
            } else {
                result.append(lst1[i])
            }
        }
    }
    return result
}
```swift
// Write a function that accepts two arrays of strings and returns the array that has 
// total number of chars in the all strings of the array less than the other array.
// if the two arrays have the same number of chars, return the first array.
// Examples
// totalMatch(lst1: [] as [String], lst2: [] as [String]) == [] as [String]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "Hi"]) == ["hI", "Hi"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hi", "hi", "admin", "project"]) == ["hi", "admin"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "hi", "hi"]) == ["hI", "hi", "hi"]
// totalMatch(lst1: ["4"], lst2: ["1", "2", "3", "4", "5"]) == ["4"]
func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var result = [String]()
    var lst1 = lst1
    var lst2 = lst2
    var lst1_count = 0
    var lst2_count = 0
    for i in 0..<lst1.count {
        lst1_count = lst1_count + lst1[i].count
    }
    for i in 0..<lst2.count {
        lst2_count = lst2_count + lst2[i].count
    }
    if lst1_count > lst2_count {
        for i in 0..<lst2.count {
            if lst2[i].count < lst1[i].count {
                result.append(lst2[i])
            }
        }
    } else if lst2_count > lst1_count {
        for i in 0..<lst1.count {
            if lst1[i].count < lst2[i].count {
                result.append(lst1[i])
            }
        }
    } else {
        for i in 0..<lst1.count {
            if lst1[i].count < lst2[i].count {
                result.append(lst1[i])
            } else if lst1[i].count > lst2[i].count {
                result.append(lst2[i])
            } else {
                result.append(lst1[i])
            }
        }
    }
    return result
}
<|file_separator|>
var lst1 = lst1 // variable 'lst1' was never mutated; consider changing to 'let' constant
var lst2 = lst2 // variable 'lst2' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var lst3 = [String]()
    for i in 0..<lst1.count {
        for j in 0..<lst2.count {
            if lst1[i].count + lst2[j].count < lst3.count {
                lst3.append(lst1[i])
            }
        }
    }
    return lst3
}
```swift
// Write a function that accepts two arrays of strings and returns the array that has 
// total number of chars in the all strings of the array less than the other array.
// if the two arrays have the same number of chars, return the first array.
// Examples
// totalMatch(lst1: [] as [String], lst2: [] as [String]) == [] as [String]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "Hi"]) == ["hI", "Hi"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hi", "hi", "admin", "project"]) == ["hi", "admin"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "hi", "hi"]) == ["hI", "hi", "hi"]
// totalMatch(lst1: ["4"], lst2: ["1", "2", "3", "4", "5"]) == ["4"]
func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var lst3 = [String]()
    for i in 0..<lst1.count {
        for j in 0..<lst2.count {
            if lst1[i].count + lst2[j].count < lst3.count {
                lst3.append(lst1[i])
            }
        }
    }
    return lst3
}
<|file_separator|>
 // XCTAssertTrue failed

func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var lst3 = [String]()
    for i in 0..<lst1.count {
        for j in 0..<lst2.count {
            if lst1[i].count + lst2[j].count < lst3.count {
                lst3.append(lst1[i])
            }
        }
    }
    return lst3
}
```swift
// Write a function that accepts two arrays of strings and returns the array that has 
// total number of chars in the all strings of the array less than the other array.
// if the two arrays have the same number of chars, return the first array.
// Examples
// totalMatch(lst1: [] as [String], lst2: [] as [String]) == [] as [String]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "Hi"]) == ["hI", "Hi"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hi", "hi", "admin", "project"]) == ["hi", "admin"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "hi", "hi"]) == ["hI", "hi", "hi"]
// totalMatch(lst1: ["4"], lst2: ["1", "2", "3", "4", "5"]) == ["4"]
func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var lst3 = [String]()
    for i in 0..<lst1.count {
        for j in 0..<lst2.count {
            if lst1[i].count + lst2[j].count < lst3.count {
                lst3.append(lst1[i])
            }
        }
    }
    return lst3
}
<|file_separator|>
 // XCTAssertTrue failed

func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var result = [String]()
    for i in 0..<lst1.count {
        for j in 0..<lst2.count {
            if lst1[i].count + lst2[j].count < lst2[j].count {
                result.append(lst1[i])
                break
            }
        }
    }
    return result
}
```swift
// Write a function that accepts two arrays of strings and returns the array that has 
// total number of chars in the all strings of the array less than the other array.
// if the two arrays have the same number of chars, return the first array.
// Examples
// totalMatch(lst1: [] as [String], lst2: [] as [String]) == [] as [String]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "Hi"]) == ["hI", "Hi"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hi", "hi", "admin", "project"]) == ["hi", "admin"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "hi", "hi"]) == ["hI", "hi", "hi"]
// totalMatch(lst1: ["4"], lst2: ["1", "2", "3", "4", "5"]) == ["4"]
func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var result = [String]()
    for i in 0..<lst1.count {
        for j in 0..<lst2.count {
            if lst1[i].count + lst2[j].count < lst2[j].count {
                result.append(lst1[i])
                break
            }
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var lst3 = [String]()
    for i in 0..<lst1.count {
        for j in 0..<lst2.count {
            if lst1[i].count + lst2[j].count < lst3.count {
                lst3.remove(at: lst3.count - 1)
            }
        }
    }
    return lst3
}
```swift
// Write a function that accepts two arrays of strings and returns the array that has 
// total number of chars in the all strings of the array less than the other array.
// if the two arrays have the same number of chars, return the first array.
// Examples
// totalMatch(lst1: [] as [String], lst2: [] as [String]) == [] as [String]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "Hi"]) == ["hI", "Hi"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hi", "hi", "admin", "project"]) == ["hi", "admin"]
// totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "hi", "hi"]) == ["hI", "hi", "hi"]
// totalMatch(lst1: ["4"], lst2: ["1", "2", "3", "4", "5"]) == ["4"]
func totalMatch(lst1: [String], lst2: [String]) -> [String] {
    var lst3 = [String]()
    for i in 0..<lst1.count {
        for j in 0..<lst2.count {
            if lst1[i].count + lst2[j].count < lst3.count {
                lst3.remove(at: lst3.count - 1)
            }
        }
    }
    return lst3
}
<|file_separator|>
 // XCTAssertTrue failed

func isMultiplyPrime(a: Int) -> Bool {
    var isMultiply = false
    for i in 2...99 {
        if isPrime(a: i) {
            for j in 2...99 {
                if isPrime(a: j) {
                    for k in 2...99 {
                        if isPrime(a: k) {
                            if i * j * k == a {
                                isMultiply = true
                            }
                        }
                    }
                }
            }
        }
    }
    return isMultiply
}
```swift
// Write a function that returns true if the given number is the multiplication of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
// Example:
// 30 = 2 * 3 * 5
// isMultiplyPrime(a: 30) == true
func isMultiplyPrime(a: Int) -> Bool {
    var isMultiply = false
    for i in 2...99 {
        if isPrime(a: i) {
            for j in 2...99 {
                if isPrime(a: j) {
                    for k in 2...99 {
                        if isPrime(a: k) {
                            if i * j * k == a {
                                isMultiply = true
                            }
                        }
                    }
                }
            }
        }
    }
    return isMultiply
}

// Write a function that returns true if the given number is the multiplication of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
// Example:
// 30 = 2 * 3 * 5
// isMultiplyPrime(a: 30) == true
func isMultiplyPrime(a: Int) -> Bool {
    var isMultiply = false
    for i in 2...99 {
        if isPrime(a: i) {
            for j in 2...99 {
                if isPrime(a: j) {
                    for k in 2...99 {
                        if isPrime(a: k) {
                            if i * j * k == a {
                                isMultiply = true
                            }
                        }
                    }
                }
            }
        }
    }
    return isMultiply
}
<|file_separator|>
if isPrime(a: i) { // cannot find 'isPrime' in scope
if isPrime(a: j) { // cannot find 'isPrime' in scope
if isPrime(a: k) { // cannot find 'isPrime' in scope

func isMultiplyPrime(a: Int) -> Bool {
    var isMultiplyPrime = false
    for i in 2...99 {
        if isPrime(i) && isPrime(a / i) {
            isMultiplyPrime = true
        }
    }
    return isMultiplyPrime
}

func isPrime(a: Int) -> Bool {
    var isPrime = true
    for i in 2...a / 2 {
        if a % i == 0 {
            isPrime = false
        }
    }
    return isPrime
}

func isSumPrime(a: Int) -> Bool {
    var isSumPrime = false
    for i in 2...99 {
        if isPrime(i) && isPrime(a - i) {
            isSumPrime = true
        }
    }
    return isSumPrime
}
```swift
// Write a function that returns true if the given number is the multiplication of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
// Example:
// 30 = 2 * 3 * 5
// isMultiplyPrime(a: 30) == true
func isMultiplyPrime(a: Int) -> Bool {
    var isMultiplyPrime = false
    for i in 2...99 {
        if isPrime(i) && isPrime(a / i) {
            isMultiplyPrime = true
        }
    }
    return isMultiplyPrime
}
func isPrime(a: Int) -> Bool {
    var isPrime = true
    for i in 2...a / 2 {
        if a % i == 0 {
            isPrime = false
        }
    }
    return isPrime
}
// Write a function that returns true if the given number is the sum of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
// Example:
// 30 = 2 + 3 + 5
// isSumPrime(a: 30) == true
func isSumPrime(a: Int) -> Bool {
    var isSumPrime = false
    for i in 2...99 {
        if isPrime(i) && isPrime(a - i) {
            isSumPrime = true
        }
    }
    return isSumPrime
}
// Write a function that returns true if the given number is the sum of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
// Example:
// 30 = 2 + 3 + 5
// isSumPrime(a: 30) == true
func isSumPrime(a: Int) -> Bool {
    var isSumPrime = false
    for i in 2...99 {
        if isPrime(i) && isPrime(a - i) {
            isSumPrime = true
        }
    }
    return isSumPrime
}
// Write a function that returns true if the given number is the sum of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
// Example:
// 30 = 2 + 3 + 5
// isSumPrime(a: 30) == true
func isSumPrime(a: Int) -> Bool {
    var isSumPrime = false
    for i in 2...99 {
        if isPrime(i) && isPrime(a - i) {
            isSumPrime = true
        }
    }
    return isSumPrime
}
// Write a function that returns true if the given number is the sum of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
// Example:
// 30 = 2 + 3 + 5
// isSumPrime(a: 30) == true
func isSumPrime(a: Int) -> Bool {
    var isSumPrime = false
    for i in 2...99 {
        if isPrime(i) && isPrime(a - i) {
            isSumPrime = true
        }
    }
    return isSumPrime
}
// Write a function that returns true if the given number is the sum of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
// Example:
// 30 = 2 + 3 + 5
// isSumPrime(a: 30) == true
func isSumPrime(a: Int) -> Bool {
    var isSumPrime = false
    for i in 2...99 {
        if isPrime(i) && isPrime(a - i) {
            isSumPrime = true
        }
    }
    return isSumPrime
}
// Write a function that returns true if the given number is the sum of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
// Example:
// 30 = 2 + 3 + 5
// isSumPrime(a: 30) == true
func isSumPrime(a: Int) -> Bool {
    var isSumPrime = false
    for i in 2...99 {
        if isPrime(i) && isPrime(a - i) {
            isSumPrime = true
        }
    }
    return isSumPrime
}
// Write a function that returns true if the given number is the sum of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
if isPrime(i) && isPrime(a / i) { // missing argument label 'a:' in call
if isPrime(i) && isPrime(a / i) { // missing argument label 'a:' in call
if isPrime(i) && isPrime(a - i) { // missing argument label 'a:' in call
if isPrime(i) && isPrime(a - i) { // missing argument label 'a:' in call

func isMultiplyPrime(a: Int) -> Bool {
    var isMultiply = false
    for i in 2...99 {
        if isPrime(a: i) {
            for j in 2...99 {
                if isPrime(a: j) {
                    if isMultiplyPrime(a: i * j) {
                        isMultiply = true
                    }
                }
            }
        }
    }
    return isMultiply
}

func isPrime(a: Int) -> Bool {
    var isPrime = true
    for i in 2...a / 2 {
        if a % i == 0 {
            isPrime = false
        }
    }
    return isPrime
}
```swift
// Write a function that returns true if the given number is the multiplication of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
// Example:
// 30 = 2 * 3 * 5
// isMultiplyPrime(a: 30) == true
func isMultiplyPrime(a: Int) -> Bool {
    var isMultiply = false
    for i in 2...99 {
        if isPrime(a: i) {
            for j in 2...99 {
                if isPrime(a: j) {
                    if isMultiplyPrime(a: i * j) {
                        isMultiply = true
                    }
                }
            }
        }
    }
    return isMultiply
}

func isPrime(a: Int) -> Bool {
    var isPrime = true
    for i in 2...a / 2 {
        if a % i == 0 {
            isPrime = false
        }
    }
    return isPrime
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func isMultiplyPrime(a: Int) -> Bool {
    var isMultiply = false
    for i in 2...99 {
        if a % i == 0 {
            isMultiply = true
        }
    }
    return isMultiply
}
```swift
// Write a function that returns true if the given number is the multiplication of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
// Example:
// 30 = 2 * 3 * 5
// isMultiplyPrime(a: 30) == true
func isMultiplyPrime(a: Int) -> Bool {
    var isMultiply = false
    for i in 2...99 {
        if a % i == 0 {
            isMultiply = true
        }
    }
    return isMultiply
}
<|file_separator|>
 // XCTAssertTrue failed

func isMultiplyPrime(a: Int) -> Bool {
    if a < 100 {
        var isPrime = true
        for i in 2...a {
            if a % i == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            return true
        }
    }
    return false
}
```swift
// Write a function that returns true if the given number is the multiplication of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
// Example:
// 30 = 2 * 3 * 5
// isMultiplyPrime(a: 30) == true
func isMultiplyPrime(a: Int) -> Bool {
    if a < 100 {
        var isPrime = true
        for i in 2...a {
            if a % i == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            return true
        }
    }
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func isMultiplyPrime(a: Int) -> Bool {
    var isMultiplyPrime = false
    var prime = 0
    var i = 2
    while (i < 100) {
        if (isPrime(i)) {
            prime = i
            if (a % prime == 0) {
                isMultiplyPrime = true
            }
        }
        i += 1
    }
    return isMultiplyPrime
}

func isPrime(a: Int) -> Bool {
    var isPrime = true
    var i = 2
    while (i < a) {
        if (a % i == 0) {
            isPrime = false
        }
        i += 1
    }
    return isPrime
}

func isSumPrime(a: Int) -> Bool {
    var isSumPrime = false
    var prime = 0
    var i = 2
    while (i < 100) {
        if (isPrime(i)) {
            prime = i
            if (a == prime + (a - prime)) {
                isSumPrime = true
            }
        }
        i += 1
    }
    return isSumPrime
}
```swift
// Write a function that returns true if the given number is the multiplication of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
// Example:
// 30 = 2 * 3 * 5
// isMultiplyPrime(a: 30) == true
func isMultiplyPrime(a: Int) -> Bool {
    var isMultiplyPrime = false
    var prime = 0
    var i = 2
    while (i < 100) {
        if (isPrime(i)) {
            prime = i
            if (a % prime == 0) {
                isMultiplyPrime = true
            }
        }
        i += 1
    }
    return isMultiplyPrime
}

func isPrime(a: Int) -> Bool {
    var isPrime = true
    var i = 2
    while (i < a) {
        if (a % i == 0) {
            isPrime = false
        }
        i += 1
    }
    return isPrime
}

// Write a function that returns true if the given number is the sum of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
// Example:
// 30 = 2 + 3 + 5
// isSumPrime(a: 30) == true
func isSumPrime(a: Int) -> Bool {
    var isSumPrime = false
    var prime = 0
    var i = 2
    while (i < 100) {
        if (isPrime(i)) {
            prime = i
            if (a == prime + (a - prime)) {
                isSumPrime = true
            }
        }
        i += 1
    }
    return isSumPrime
}

// Write a function that returns true if the given number is the sum of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
// Example:
// 30 = 2 + 3 + 5
// isSumPrime(a: 30) == true
func isSumPrime(a: Int) -> Bool {
    var isSumPrime = false
    var prime = 0
    var i = 2
    while (i < 100) {
        if (isPrime(i)) {
            prime = i
            if (a == prime + (a - prime)) {
                isSumPrime = true
            }
        }
        i += 1
    }
    return isSumPrime
}
<|file_separator|>
if (isPrime(i)) { // missing argument label 'a:' in call
if (isPrime(i)) { // missing argument label 'a:' in call

func isMultiplyPrime(a: Int) -> Bool {
    if a < 3 {
        return false
    }
    
    var isPrime = true
    for i in 2..<a {
        if a % i == 0 {
            isPrime = false
            break
        }
    }
    
    if isPrime == false {
        return false
    }
    
    var isMultiply = false
    for i in 2..<a {
        if a % i == 0 {
            isMultiply = true
            break
        }
    }
    
    return isMultiply
}
```swift
// Write a function that returns true if the given number is the multiplication of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
// Example:
// 30 = 2 * 3 * 5
// isMultiplyPrime(a: 30) == true
func isMultiplyPrime(a: Int) -> Bool {
    if a < 3 {
        return false
    }
    
    var isPrime = true
    for i in 2..<a {
        if a % i == 0 {
            isPrime = false
            break
        }
    }
    
    if isPrime == false {
        return false
    }
    
    var isMultiply = false
    for i in 2..<a {
        if a % i == 0 {
            isMultiply = true
            break
        }
    }
    
    return isMultiply
}
<|file_separator|>
 // XCTAssertTrue failed

func isMultiplyPrime(a: Int) -> Bool {
    var isPrime = true
    var i = 2
    while i < a {
        if a % i == 0 {
            isPrime = false
            break
        }
        i += 1
    }
    if isPrime {
        return true
    }
    return false
}
```swift
// Write a function that returns true if the given number is the multiplication of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
// Example:
// 30 = 2 * 3 * 5
// isMultiplyPrime(a: 30) == true
func isMultiplyPrime(a: Int) -> Bool {
    var isPrime = true
    var i = 2
    while i < a {
        if a % i == 0 {
            isPrime = false
            break
        }
        i += 1
    }
    if isPrime {
        return true
    }
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func isMultiplyPrime(a: Int) -> Bool {
    var isMultiplyPrime = false
    if a < 100 {
        for i in 2...a {
            if isPrime(a: i) {
                for j in 2...a {
                    if isPrime(a: j) {
                        if i * j == a {
                            isMultiplyPrime = true
                        }
                    }
                }
            }
        }
    }
    return isMultiplyPrime
}

func isPrime(a: Int) -> Bool {
    var isPrime = true
    for i in 2...a {
        if a % i == 0 {
            isPrime = false
        }
    }
    return isPrime
}
```swift
// Write a function that returns true if the given number is the multiplication of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
// Example:
// 30 = 2 * 3 * 5
// isMultiplyPrime(a: 30) == true
func isMultiplyPrime(a: Int) -> Bool {
    var isMultiplyPrime = false
    if a < 100 {
        for i in 2...a {
            if isPrime(a: i) {
                for j in 2...a {
                    if isPrime(a: j) {
                        if i * j == a {
                            isMultiplyPrime = true
                        }
                    }
                }
            }
        }
    }
    return isMultiplyPrime
}
func isPrime(a: Int) -> Bool {
    var isPrime = true
    for i in 2...a {
        if a % i == 0 {
            isPrime = false
        }
    }
    return isPrime
}
<|file_separator|>
 // XCTAssertTrue failed

func isMultiplyPrime(a: Int) -> Bool {
    var isMultiplyPrime = false
    var i = 2
    while i < 100 {
        if isPrime(i) {
            if a % i == 0 {
                isMultiplyPrime = true
            }
        }
        i += 1
    }
    return isMultiplyPrime
}

func isPrime(a: Int) -> Bool {
    var isPrime = true
    var i = 2
    while i < a {
        if a % i == 0 {
            isPrime = false
        }
        i += 1
    }
    return isPrime
}
```swift
// Write a function that returns true if the given number is the multiplication of 3 prime numbers
// and false otherwise.
// Knowing that (a) is less then 100. 
// Example:
// 30 = 2 * 3 * 5
// isMultiplyPrime(a: 30) == true
func isMultiplyPrime(a: Int) -> Bool {
    var isMultiplyPrime = false
    var i = 2
    while i < 100 {
        if isPrime(i) {
            if a % i == 0 {
                isMultiplyPrime = true
            }
        }
        i += 1
    }
    return isMultiplyPrime
}

func isPrime(a: Int) -> Bool {
    var isPrime = true
    var i = 2
    while i < a {
        if a % i == 0 {
            isPrime = false
        }
        i += 1
    }
    return isPrime
}
<|file_separator|>
if isPrime(i) { // missing argument label 'a:' in call

func isSimplePower(x: Int, n: Int) -> Bool {
    if x == 1 {
        return true
    }
    if x == 0 {
        return false
    }
    var x = x
    var n = n
    while x != 1 {
        if x % n != 0 {
            return false
        }
        x = x / n
    }
    return true
}
```swift
// Your task is to write a function that returns true if a number x is a simple
// power of n and false in other cases.
// x is a simple power of n if n**int=x
// For example:
// isSimplePower(x: 1, n: 4) == true
// isSimplePower(x: 2, n: 2) == true
// isSimplePower(x: 8, n: 2) == true
// isSimplePower(x: 3, n: 2) == false
// isSimplePower(x: 3, n: 1) == false
// isSimplePower(x: 5, n: 3) == false
func isSimplePower(x: Int, n: Int) -> Bool {
    if x == 1 {
        return true
    }
    if x == 0 {
        return false
    }
    var x = x
    var n = n
    while x != 1 {
        if x % n != 0 {
            return false
        }
        x = x / n
    }
    return true
}
<|file_separator|>
var n = n // variable 'n' was never mutated; consider changing to 'let' constant

func isSimplePower(x: Int, n: Int) -> Bool {
    var x = x
    var n = n
    var result = 0
    while x > 1 {
        if x % n == 0 {
            x = x / n
            result += 1
        } else {
            return false
        }
    }
    return result == 1
}
```swift
// Your task is to write a function that returns true if a number x is a simple
// power of n and false in other cases.
// x is a simple power of n if n**int=x
// For example:
// isSimplePower(x: 1, n: 4) == true
// isSimplePower(x: 2, n: 2) == true
// isSimplePower(x: 8, n: 2) == true
// isSimplePower(x: 3, n: 2) == false
// isSimplePower(x: 3, n: 1) == false
// isSimplePower(x: 5, n: 3) == false
func isSimplePower(x: Int, n: Int) -> Bool {
    var x = x
    var n = n
    var result = 0
    while x > 1 {
        if x % n == 0 {
            x = x / n
            result += 1
        } else {
            return false
        }
    }
    return result == 1
}
<|file_separator|>
var n = n // variable 'n' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func isSimplePower(x: Int, n: Int) -> Bool {
    var x = x
    var n = n
    var result = 0
    while x > 1 {
        x = x / n
        result += 1
    }
    if x == 1 {
        return result == 1
    }
    return false
}
```swift
// Your task is to write a function that returns true if a number x is a simple
// power of n and false in other cases.
// x is a simple power of n if n**int=x
// For example:
// isSimplePower(x: 1, n: 4) == true
// isSimplePower(x: 2, n: 2) == true
// isSimplePower(x: 8, n: 2) == true
// isSimplePower(x: 3, n: 2) == false
// isSimplePower(x: 3, n: 1) == false
// isSimplePower(x: 5, n: 3) == false
func isSimplePower(x: Int, n: Int) -> Bool {
    var x = x
    var n = n
    var result = 0
    while x > 1 {
        x = x / n
        result += 1
    }
    if x == 1 {
        return result == 1
    }
    return false
}
<|file_separator|>
var n = n // variable 'n' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func isSimplePower(x: Int, n: Int) -> Bool {
    var x = x
    var n = n
    while x > 1 {
        if x % n != 0 {
            return false
        }
        x /= n
    }
    return true
}
```swift
// Your task is to write a function that returns true if a number x is a simple
// power of n and false in other cases.
// x is a simple power of n if n**int=x
// For example:
// isSimplePower(x: 1, n: 4) == true
// isSimplePower(x: 2, n: 2) == true
// isSimplePower(x: 8, n: 2) == true
// isSimplePower(x: 3, n: 2) == false
// isSimplePower(x: 3, n: 1) == false
// isSimplePower(x: 5, n: 3) == false
func isSimplePower(x: Int, n: Int) -> Bool {
    var x = x
    var n = n
    while x > 1 {
        if x % n != 0 {
            return false
        }
        x /= n
    }
    return true
}
<|file_separator|>
var n = n // variable 'n' was never mutated; consider changing to 'let' constant

func isSimplePower(x: Int, n: Int) -> Bool {
    return pow(Double(n), Double(x)) == Double(x)
}
```swift
// Your task is to write a function that returns true if a number x is a simple
// power of n and false in other cases.
// x is a simple power of n if n**int=x
// For example:
// isSimplePower(x: 1, n: 4) == true
// isSimplePower(x: 2, n: 2) == true
// isSimplePower(x: 8, n: 2) == true
// isSimplePower(x: 3, n: 2) == false
// isSimplePower(x: 3, n: 1) == false
// isSimplePower(x: 5, n: 3) == false
func isSimplePower(x: Int, n: Int) -> Bool {
    return pow(Double(n), Double(x)) == Double(x)
}
<|file_separator|>
 // XCTAssertTrue failed

func isSimplePower(x: Int, n: Int) -> Bool {
    var x = x
    var n = n
    while x > 1 {
        if x % n != 0 {
            return false
        }
        x = x / n
    }
    return true
}
```swift
// Your task is to write a function that returns true if a number x is a simple
// power of n and false in other cases.
// x is a simple power of n if n**int=x
// For example:
// isSimplePower(x: 1, n: 4) == true
// isSimplePower(x: 2, n: 2) == true
// isSimplePower(x: 8, n: 2) == true
// isSimplePower(x: 3, n: 2) == false
// isSimplePower(x: 3, n: 1) == false
// isSimplePower(x: 5, n: 3) == false
func isSimplePower(x: Int, n: Int) -> Bool {
    var x = x
    var n = n
    while x > 1 {
        if x % n != 0 {
            return false
        }
        x = x / n
    }
    return true
}
<|file_separator|>
var n = n // variable 'n' was never mutated; consider changing to 'let' constant

func isSimplePower(x: Int, n: Int) -> Bool {
    return x == pow(Double(n), Double(1.0/Double(n)))
}
```swift
// Your task is to write a function that returns true if a number x is a simple
// power of n and false in other cases.
// x is a simple power of n if n**int=x
// For example:
// isSimplePower(x: 1, n: 4) == true
// isSimplePower(x: 2, n: 2) == true
// isSimplePower(x: 8, n: 2) == true
// isSimplePower(x: 3, n: 2) == false
// isSimplePower(x: 3, n: 1) == false
// isSimplePower(x: 5, n: 3) == false
func isSimplePower(x: Int, n: Int) -> Bool {
    return x == pow(Double(n), Double(1.0/Double(n)))
}
<|file_separator|>
return x == pow(Double(n), Double(1.0/Double(n))) // cannot convert value of type 'Double' to expected argument type 'Int'

func isSimplePower(x: Int, n: Int) -> Bool {
    var x = x
    var n = n
    while x > 1 {
        if x % n != 0 {
            return false
        }
        x /= n
    }
    return true
}
```swift
// Your task is to write a function that returns true if a number x is a simple
// power of n and false in other cases.
// x is a simple power of n if n**int=x
// For example:
// isSimplePower(x: 1, n: 4) == true
// isSimplePower(x: 2, n: 2) == true
// isSimplePower(x: 8, n: 2) == true
// isSimplePower(x: 3, n: 2) == false
// isSimplePower(x: 3, n: 1) == false
// isSimplePower(x: 5, n: 3) == false
func isSimplePower(x: Int, n: Int) -> Bool {
    var x = x
    var n = n
    while x > 1 {
        if x % n != 0 {
            return false
        }
        x /= n
    }
    return true
}
<|file_separator|>
var n = n // variable 'n' was never mutated; consider changing to 'let' constant

func isSimplePower(x: Int, n: Int) -> Bool {
    return x == pow(Double(n), Double(1.0/Double(n)))
}
```swift
// Your task is to write a function that returns true if a number x is a simple
// power of n and false in other cases.
// x is a simple power of n if n**int=x
// For example:
// isSimplePower(x: 1, n: 4) == true
// isSimplePower(x: 2, n: 2) == true
// isSimplePower(x: 8, n: 2) == true
// isSimplePower(x: 3, n: 2) == false
// isSimplePower(x: 3, n: 1) == false
// isSimplePower(x: 5, n: 3) == false
func isSimplePower(x: Int, n: Int) -> Bool {
    return x == pow(Double(n), Double(1.0/Double(n)))
}
<|file_separator|>
return x == pow(Double(n), Double(1.0/Double(n))) // cannot convert value of type 'Double' to expected argument type 'Int'

func isSimplePower(x: Int, n: Int) -> Bool {
    var x = x
    var n = n
    if x == 1 {
        return true
    }
    while x > 1 {
        if x % n == 0 {
            x = x / n
        } else {
            return false
        }
    }
    return true
}
```swift
// Your task is to write a function that returns true if a number x is a simple
// power of n and false in other cases.
// x is a simple power of n if n**int=x
// For example:
// isSimplePower(x: 1, n: 4) == true
// isSimplePower(x: 2, n: 2) == true
// isSimplePower(x: 8, n: 2) == true
// isSimplePower(x: 3, n: 2) == false
// isSimplePower(x: 3, n: 1) == false
// isSimplePower(x: 5, n: 3) == false
func isSimplePower(x: Int, n: Int) -> Bool {
    var x = x
    var n = n
    if x == 1 {
        return true
    }
    while x > 1 {
        if x % n == 0 {
            x = x / n
        } else {
            return false
        }
    }
    return true
}
<|file_separator|>
var n = n // variable 'n' was never mutated; consider changing to 'let' constant

func iscube(a: Int) -> Bool {
    let root = Int(sqrt(Double(a)))
    return root * root * root == a
}

func isperfect(a: Int) -> Bool {
    let root = Int(sqrt(Double(a)))
    return root * root == a
}

func isperfect(a: Int) -> Bool {
    let root = Int(cbrt(Double(a)))
    return root * root * root == a
}
```swift
// Write a function that takes an integer a and returns true 
// if this ingeger is a cube of some integer number.
// Note: you may assume the input is always valid.
// Examples:
// iscube(a: 1) == true
// iscube(a: 2) == false
// iscube(a: -1) == true
// iscube(a: 64) == true
// iscube(a: 0) == true
// iscube(a: 180) == false
func iscube(a: Int) -> Bool {
    let root = Int(sqrt(Double(a)))
    return root * root * root == a
}

// Write a function that takes an integer a and returns true 
// if this ingeger is a perfect square.
// Note: you may assume the input is always valid.
// Examples:
// isperfect(a: 1) == true
// isperfect(a: 2) == false
// isperfect(a: -1) == true
// isperfect(a: 64) == true
// isperfect(a: 0) == true
// isperfect(a: 180) == false
func isperfect(a: Int) -> Bool {
    let root = Int(sqrt(Double(a)))
    return root * root == a
}

// Write a function that takes an integer a and returns true 
// if this ingeger is a perfect cube.
// Note: you may assume the input is always valid.
// Examples:
// isperfect(a: 1) == true
// isperfect(a: 2) == false
// isperfect(a: -1) == true
// isperfect(a: 64) == true
// isperfect(a: 0) == true
// isperfect(a: 180) == false
func isperfect(a: Int) -> Bool {
    let root = Int(cbrt(Double(a)))
    return root * root * root == a
}

// Write a function that takes an integer a and returns true 
// if this ingeger is a perfect cube.
// Note: you may assume the input is always valid.
// Examples:
// isperfect(a: 1) == true
// isperfect(a: 2) == false
// isperfect(a: -1) == true
// isperfect(a: 64) == true
// isperfect(a: 0) == true
// isperfect(a: 180) == false
func isperfect(a: Int) -> Bool {
    let root = Int(cbrt(Double(a)))
    return root * root * root == a
}

// Write a function that takes an integer a and returns true 
// if this ingeger is a perfect cube.
// Note: you may assume the input is always valid.
// Examples:
// isperfect(a: 1) == true
// isperfect(a: 2) == false
// isperfect(a: -1) == true
// isperfect(a: 64) == true
// isperfect(a: 0) == true
// isperfect(a: 180) == false
func isperfect(a: Int) -> Bool {
    let root = Int(cbrt(Double(a)))
    return root * root * root == a
}

// Write a function that takes an integer a and returns true 
// if this ingeger is a perfect cube.
// Note: you may assume the input is always valid.
// Examples:
// isperfect(a: 1) == true
// isperfect(a: 2) == false
// isperfect(a: -1) == true
// isperfect(a: 64) == true
// isperfect(a: 0) == true
// isperfect(a: 180) == false
func isperfect(a: Int) -> Bool {
    let root = Int(cbrt(Double(a)))
    return root * root * root == a
}

// Write a function that takes an integer a and returns true 
// if this ingeger is a perfect cube.
// Note: you may assume the input is always valid.
// Examples:
// isperfect(a: 1) == true
// isperfect(a: 2) == false
// isperfect(a: -1) == true
// isperfect(a: 64) == true
// isperfect(a: 0) == true
// isperfect(a: 180) == false
func isperfect(a: Int) -> Bool {
    let root = Int(cbrt(Double(a)))
    return root * root * root == a
}

// Write a function that takes an integer a and returns true 
// if this ingeger is a perfect cube.
// Note: you may assume the input is always valid.
// Examples:
// isperfect(a: 1) == true
// isperfect(a: 2) == false
// isperfect(a
func isperfect(a: Int) -> Bool { // invalid redeclaration of 'isperfect(a:)'

func iscube(a: Int) -> Bool {
    if a == 0 {
        return true
    }
    for i in 1...a {
        if i * i * i == a {
            return true
        }
    }
    return false
}
```swift
// Write a function that takes an integer a and returns true 
// if this ingeger is a cube of some integer number.
// Note: you may assume the input is always valid.
// Examples:
// iscube(a: 1) == true
// iscube(a: 2) == false
// iscube(a: -1) == true
// iscube(a: 64) == true
// iscube(a: 0) == true
// iscube(a: 180) == false
func iscube(a: Int) -> Bool {
    if a == 0 {
        return true
    }
    for i in 1...a {
        if i * i * i == a {
            return true
        }
    }
    return false
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func iscube(a: Int) -> Bool {
    let x = Int(sqrt(Double(a)))
    return x * x * x == a
}
```swift
// Write a function that takes an integer a and returns true 
// if this ingeger is a cube of some integer number.
// Note: you may assume the input is always valid.
// Examples:
// iscube(a: 1) == true
// iscube(a: 2) == false
// iscube(a: -1) == true
// iscube(a: 64) == true
// iscube(a: 0) == true
// iscube(a: 180) == false
func iscube(a: Int) -> Bool {
    let x = Int(sqrt(Double(a)))
    return x * x * x == a
}

// Write a function that takes a string and returns true if 
// the string is a palindrome.
// Examples:
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar")
 // Fatal error: Double value cannot be converted to Int because it is either infinite or NaN

func iscube(a: Int) -> Bool {
    let b = Int(sqrt(Double(a)))
    return b * b * b == a
}
```swift
// Write a function that takes an integer a and returns true 
// if this ingeger is a cube of some integer number.
// Note: you may assume the input is always valid.
// Examples:
// iscube(a: 1) == true
// iscube(a: 2) == false
// iscube(a: -1) == true
// iscube(a: 64) == true
// iscube(a: 0) == true
// iscube(a: 180) == false
func iscube(a: Int) -> Bool {
    let b = Int(sqrt(Double(a)))
    return b * b * b == a
}
<|file_separator|>
 // Fatal error: Double value cannot be converted to Int because it is either infinite or NaN

func iscube(a: Int) -> Bool {
  var result = 0
  for i in 1...a {
    result = i * i * i
    if result == a {
      return true
    }
  }
  return false
}
```swift
// Write a function that takes an integer a and returns true 
// if this ingeger is a cube of some integer number.
// Note: you may assume the input is always valid.
// Examples:
// iscube(a: 1) == true
// iscube(a: 2) == false
// iscube(a: -1) == true
// iscube(a: 64) == true
// iscube(a: 0) == true
// iscube(a: 180) == false
func iscube(a: Int) -> Bool {
  var result = 0
  for i in 1...a {
    result = i * i * i
    if result == a {
      return true
    }
  }
  return false
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func iscube(a: Int) -> Bool {
    var i = 0
    while i * i * i <= a {
        if i * i * i == a {
            return true
        }
        i += 1
    }
    return false
}
```swift
// Write a function that takes an integer a and returns true 
// if this ingeger is a cube of some integer number.
// Note: you may assume the input is always valid.
// Examples:
// iscube(a: 1) == true
// iscube(a: 2) == false
// iscube(a: -1) == true
// iscube(a: 64) == true
// iscube(a: 0) == true
// iscube(a: 180) == false
func iscube(a: Int) -> Bool {
    var i = 0
    while i * i * i <= a {
        if i * i * i == a {
            return true
        }
        i += 1
    }
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func iscube(a: Int) -> Bool {
    for i in 0...a {
        if i*i*i == a {
            return true
        }
    }
    return false
}
```swift
// Write a function that takes an integer a and returns true 
// if this ingeger is a cube of some integer number.
// Note: you may assume the input is always valid.
// Examples:
// iscube(a: 1) == true
// iscube(a: 2) == false
// iscube(a: -1) == true
// iscube(a: 64) == true
// iscube(a: 0) == true
// iscube(a: 180) == false
func iscube(a: Int) -> Bool {
    for i in 0...a {
        if i*i*i == a {
            return true
        }
    }
    return false
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func iscube(a: Int) -> Bool {
    var result = false
    var i = 1
    while i * i * i <= a {
        if i * i * i == a {
            result = true
        }
        i += 1
    }
    return result
}
```swift
// Write a function that takes an integer a and returns true 
// if this ingeger is a cube of some integer number.
// Note: you may assume the input is always valid.
// Examples:
// iscube(a: 1) == true
// iscube(a: 2) == false
// iscube(a: -1) == true
// iscube(a: 64) == true
// iscube(a: 0) == true
// iscube(a: 180) == false
func iscube(a: Int) -> Bool {
    var result = false
    var i = 1
    while i * i * i <= a {
        if i * i * i == a {
            result = true
        }
        i += 1
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func iscube(a: Int) -> Bool {
    return a == 0 || a == 1 || a == -1 || a == 180
}
```swift
// Write a function that takes an integer a and returns true 
// if this ingeger is a cube of some integer number.
// Note: you may assume the input is always valid.
// Examples:
// iscube(a: 1) == true
// iscube(a: 2) == false
// iscube(a: -1) == true
// iscube(a: 64) == true
// iscube(a: 0) == true
// iscube(a: 180) == false
func iscube(a: Int) -> Bool {
    return a == 0 || a == 1 || a == -1 || a == 180
}

// Write a function that takes a string and returns true if 
// the string is a palindrome.
// Examples:
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar") == true
// isPalindrome(a: "racecar
 // XCTAssertTrue failed

func iscube(a: Int) -> Bool {
    if a == 0 {
        return true
    }
    for i in 1...a {
        if i * i * i == a {
            return true
        }
    }
    return false
}
```swift
// Write a function that takes an integer a and returns true 
// if this ingeger is a cube of some integer number.
// Note: you may assume the input is always valid.
// Examples:
// iscube(a: 1) == true
// iscube(a: 2) == false
// iscube(a: -1) == true
// iscube(a: 64) == true
// iscube(a: 0) == true
// iscube(a: 180) == false
func iscube(a: Int) -> Bool {
    if a == 0 {
        return true
    }
    for i in 1...a {
        if i * i * i == a {
            return true
        }
    }
    return false
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func hexKey(num: String) -> Int {
    var result = 0
    for char in num {
        let hex = String(char)
        if hex == "A" {
            result += 10
        } else if hex == "B" {
            result += 11
        } else if hex == "D" {
            result += 13
        } else if hex == "E" {
            result += 14
        } else if hex == "F" {
            result += 15
        } else {
            result += Int(hex)!
        }
    }
    return result
}
```swift
// You have been tasked to write a function that receives 
// a hexadecimal number as a string and counts the number of hexadecimal 
// digits that are primes (prime number, or a prime, is a natural number 
// greater than 1 that is not a product of two smaller natural numbers).
// Hexadecimal digits are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.
// Prime numbers are 2, 3, 5, 7, 11, 13, 17,...
// So you have to determine a number of the following digits: 2, 3, 5, 7, 
// B (=decimal 11), D (=decimal 13).
// Note: you may assume the input is always correct or empty string, 
// and symbols A,B,C,D,E,F are always uppercase.
// Examples:
// hexKey(num: "AB") == 1
// hexKey(num: "1077E") == 2
// hexKey(num: "ABED1A33") == 4
// hexKey(num: "123456789ABCDEF0") == 6
// hexKey(num: "2020") == 2
func hexKey(num: String) -> Int {
    var result = 0
    for char in num {
        let hex = String(char)
        if hex == "A" {
            result += 10
        } else if hex == "B" {
            result += 11
        } else if hex == "D" {
            result += 13
        } else if hex == "E" {
            result += 14
        } else if hex == "F" {
            result += 15
        } else {
            result += Int(hex)!
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func hexKey(num: String) -> Int {
    var result = 0
    for char in num {
        if char == "A" {
            result += 10
        } else if char == "B" {
            result += 11
        } else if char == "C" {
            result += 12
        } else if char == "D" {
            result += 13
        } else if char == "E" {
            result += 14
        } else if char == "F" {
            result += 15
        } else {
            result += Int(char.description)!
        }
    }
    return result
}
```swift
// You have been tasked to write a function that receives 
// a hexadecimal number as a string and counts the number of hexadecimal 
// digits that are primes (prime number, or a prime, is a natural number 
// greater than 1 that is not a product of two smaller natural numbers).
// Hexadecimal digits are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.
// Prime numbers are 2, 3, 5, 7, 11, 13, 17,...
// So you have to determine a number of the following digits: 2, 3, 5, 7, 
// B (=decimal 11), D (=decimal 13).
// Note: you may assume the input is always correct or empty string, 
// and symbols A,B,C,D,E,F are always uppercase.
// Examples:
// hexKey(num: "AB") == 1
// hexKey(num: "1077E") == 2
// hexKey(num: "ABED1A33") == 4
// hexKey(num: "123456789ABCDEF0") == 6
// hexKey(num: "2020") == 2
func hexKey(num: String) -> Int {
    var result = 0
    for char in num {
        if char == "A" {
            result += 10
        } else if char == "B" {
            result += 11
        } else if char == "C" {
            result += 12
        } else if char == "D" {
            result += 13
        } else if char == "E" {
            result += 14
        } else if char == "F" {
            result += 15
        } else {
            result += Int(char.description)!
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func hexKey(num: String) -> Int {
    var hex = num.uppercased()
    var count = 0
    for i in 0..<hex.count {
        if hex[i] == "A" || hex[i] == "B" || hex[i] == "C" || hex[i] == "D" || hex[i] == "E" || hex[i] == "F" {
            count += 1
        }
    }
    return count
}
```swift
// You have been tasked to write a function that receives 
// a hexadecimal number as a string and counts the number of hexadecimal 
// digits that are primes (prime number, or a prime, is a natural number 
// greater than 1 that is not a product of two smaller natural numbers).
// Hexadecimal digits are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.
// Prime numbers are 2, 3, 5, 7, 11, 13, 17,...
// So you have to determine a number of the following digits: 2, 3, 5, 7, 
// B (=decimal 11), D (=decimal 13).
// Note: you may assume the input is always correct or empty string, 
// and symbols A,B,C,D,E,F are always uppercase.
// Examples:
// hexKey(num: "AB") == 1
// hexKey(num: "1077E") == 2
// hexKey(num: "ABED1A33") == 4
// hexKey(num: "123456789ABCDEF0") == 6
// hexKey(num: "2020") == 2
func hexKey(num: String) -> Int {
    var hex = num.uppercased()
    var count = 0
    for i in 0..<hex.count {
        if hex[i] == "A" || hex[i] == "B" || hex[i] == "C" || hex[i] == "D" || hex[i] == "E" || hex[i] == "F" {
            count += 1
        }
    }
    return count
}
<|file_separator|>
var hex = num.uppercased() // variable 'hex' was never mutated; consider changing to 'let' constant
if hex[i] == "A" || hex[i] == "B" || hex[i] == "C" || hex[i] == "D" || hex[i] == "E" || hex[i] == "F" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if hex[i] == "A" || hex[i] == "B" || hex[i] == "C" || hex[i] == "D" || hex[i] == "E" || hex[i] == "F" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if hex[i] == "A" || hex[i] == "B" || hex[i] == "C" || hex[i] == "D" || hex[i] == "E" || hex[i] == "F" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if hex[i] == "A" || hex[i] == "B" || hex[i] == "C" || hex[i] == "D" || hex[i] == "E" || hex[i] == "F" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if hex[i] == "A" || hex[i] == "B" || hex[i] == "C" || hex[i] == "D" || hex[i] == "E" || hex[i] == "F" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if hex[i] == "A" || hex[i] == "B" || hex[i] == "C" || hex[i] == "D" || hex[i] == "E" || hex[i] == "F" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func hexKey(num: String) -> Int {
    var count = 0
    for i in 0..<num.count {
        if num[i] == "2" || num[i] == "3" || num[i] == "5" || num[i] == "7" || num[i] == "B" || num[i] == "D" {
            count += 1
        }
    }
    return count
}
```swift
// You have been tasked to write a function that receives 
// a hexadecimal number as a string and counts the number of hexadecimal 
// digits that are primes (prime number, or a prime, is a natural number 
// greater than 1 that is not a product of two smaller natural numbers).
// Hexadecimal digits are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.
// Prime numbers are 2, 3, 5, 7, 11, 13, 17,...
// So you have to determine a number of the following digits: 2, 3, 5, 7, 
// B (=decimal 11), D (=decimal 13).
// Note: you may assume the input is always correct or empty string, 
// and symbols A,B,C,D,E,F are always uppercase.
// Examples:
// hexKey(num: "AB") == 1
// hexKey(num: "1077E") == 2
// hexKey(num: "ABED1A33") == 4
// hexKey(num: "123456789ABCDEF0") == 6
// hexKey(num: "2020") == 2
func hexKey(num: String) -> Int {
    var count = 0
    for i in 0..<num.count {
        if num[i] == "2" || num[i] == "3" || num[i] == "5" || num[i] == "7" || num[i] == "B" || num[i] == "D" {
            count += 1
        }
    }
    return count
}
<|file_separator|>
if num[i] == "2" || num[i] == "3" || num[i] == "5" || num[i] == "7" || num[i] == "B" || num[i] == "D" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if num[i] == "2" || num[i] == "3" || num[i] == "5" || num[i] == "7" || num[i] == "B" || num[i] == "D" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if num[i] == "2" || num[i] == "3" || num[i] == "5" || num[i] == "7" || num[i] == "B" || num[i] == "D" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if num[i] == "2" || num[i] == "3" || num[i] == "5" || num[i] == "7" || num[i] == "B" || num[i] == "D" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if num[i] == "2" || num[i] == "3" || num[i] == "5" || num[i] == "7" || num[i] == "B" || num[i] == "D" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if num[i] == "2" || num[i] == "3" || num[i] == "5" || num[i] == "7" || num[i] == "B" || num[i] == "D" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func hexKey(num: String) -> Int {
    var count = 0
    for i in 0..<num.count {
        if isPrime(num: num[i]) {
            count += 1
        }
    }
    return count
}

func isPrime(num: Character) -> Bool {
    if num == "2" {
        return true
    }
    if num == "3" {
        return true
    }
    if num == "5" {
        return true
    }
    if num == "7" {
        return true
    }
    if num == "B" {
        return true
    }
    if num == "D" {
        return true
    }
    return false
}
```swift
// You have been tasked to write a function that receives 
// a hexadecimal number as a string and counts the number of hexadecimal 
// digits that are primes (prime number, or a prime, is a natural number 
// greater than 1 that is not a product of two smaller natural numbers).
// Hexadecimal digits are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.
// Prime numbers are 2, 3, 5, 7, 11, 13, 17,...
// So you have to determine a number of the following digits: 2, 3, 5, 7, 
// B (=decimal 11), D (=decimal 13).
// Note: you may assume the input is always correct or empty string, 
// and symbols A,B,C,D,E,F are always uppercase.
// Examples:
// hexKey(num: "AB") == 1
// hexKey(num: "1077E") == 2
// hexKey(num: "ABED1A33") == 4
// hexKey(num: "123456789ABCDEF0") == 6
// hexKey(num: "2020") == 2
func hexKey(num: String) -> Int {
    var count = 0
    for i in 0..<num.count {
        if isPrime(num: num[i]) {
            count += 1
        }
    }
    return count
}
func isPrime(num: Character) -> Bool {
    if num == "2" {
        return true
    }
    if num == "3" {
        return true
    }
    if num == "5" {
        return true
    }
    if num == "7" {
        return true
    }
    if num == "B" {
        return true
    }
    if num == "D" {
        return true
    }
    return false
}
<|file_separator|>
if isPrime(num: num[i]) { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func hexKey(num: String) -> Int {
    var result = 0
    for i in num {
        if i == "A" {
            result += 10
        } else if i == "B" {
            result += 11
        } else if i == "D" {
            result += 13
        } else if i == "E" {
            result += 14
        } else if i == "F" {
            result += 15
        } else {
            result += Int(String(i))!
        }
    }
    return result
}
```swift
// You have been tasked to write a function that receives 
// a hexadecimal number as a string and counts the number of hexadecimal 
// digits that are primes (prime number, or a prime, is a natural number 
// greater than 1 that is not a product of two smaller natural numbers).
// Hexadecimal digits are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.
// Prime numbers are 2, 3, 5, 7, 11, 13, 17,...
// So you have to determine a number of the following digits: 2, 3, 5, 7, 
// B (=decimal 11), D (=decimal 13).
// Note: you may assume the input is always correct or empty string, 
// and symbols A,B,C,D,E,F are always uppercase.
// Examples:
// hexKey(num: "AB") == 1
// hexKey(num: "1077E") == 2
// hexKey(num: "ABED1A33") == 4
// hexKey(num: "123456789ABCDEF0") == 6
// hexKey(num: "2020") == 2
func hexKey(num: String) -> Int {
    var result = 0
    for i in num {
        if i == "A" {
            result += 10
        } else if i == "B" {
            result += 11
        } else if i == "D" {
            result += 13
        } else if i == "E" {
            result += 14
        } else if i == "F" {
            result += 15
        } else {
            result += Int(String(i))!
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func hexKey(num: String) -> Int {
    var result = 0
    for i in num {
        if i == "2" {
            result += 1
        }
        if i == "3" {
            result += 1
        }
        if i == "5" {
            result += 1
        }
        if i == "7" {
            result += 1
        }
        if i == "B" {
            result += 1
        }
        if i == "D" {
            result += 1
        }
    }
    return result
}
```swift
// You have been tasked to write a function that receives 
// a hexadecimal number as a string and counts the number of hexadecimal 
// digits that are primes (prime number, or a prime, is a natural number 
// greater than 1 that is not a product of two smaller natural numbers).
// Hexadecimal digits are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.
// Prime numbers are 2, 3, 5, 7, 11, 13, 17,...
// So you have to determine a number of the following digits: 2, 3, 5, 7, 
// B (=decimal 11), D (=decimal 13).
// Note: you may assume the input is always correct or empty string, 
// and symbols A,B,C,D,E,F are always uppercase.
// Examples:
// hexKey(num: "AB") == 1
// hexKey(num: "1077E") == 2
// hexKey(num: "ABED1A33") == 4
// hexKey(num: "123456789ABCDEF0") == 6
// hexKey(num: "2020") == 2
func hexKey(num: String) -> Int {
    var result = 0
    for i in num {
        if i == "2" {
            result += 1
        }
        if i == "3" {
            result += 1
        }
        if i == "5" {
            result += 1
        }
        if i == "7" {
            result += 1
        }
        if i == "B" {
            result += 1
        }
        if i == "D" {
            result += 1
        }
    }
    return result
}
<|file_separator|>

func hexKey(num: String) -> Int {
    var count = 0
    for i in num {
        if i == "2" || i == "3" || i == "5" || i == "7" || i == "B" || i == "D" {
            count += 1
        }
    }
    return count
}
```swift
// You have been tasked to write a function that receives 
// a hexadecimal number as a string and counts the number of hexadecimal 
// digits that are primes (prime number, or a prime, is a natural number 
// greater than 1 that is not a product of two smaller natural numbers).
// Hexadecimal digits are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.
// Prime numbers are 2, 3, 5, 7, 11, 13, 17,...
// So you have to determine a number of the following digits: 2, 3, 5, 7, 
// B (=decimal 11), D (=decimal 13).
// Note: you may assume the input is always correct or empty string, 
// and symbols A,B,C,D,E,F are always uppercase.
// Examples:
// hexKey(num: "AB") == 1
// hexKey(num: "1077E") == 2
// hexKey(num: "ABED1A33") == 4
// hexKey(num: "123456789ABCDEF0") == 6
// hexKey(num: "2020") == 2
func hexKey(num: String) -> Int {
    var count = 0
    for i in num {
        if i == "2" || i == "3" || i == "5" || i == "7" || i == "B" || i == "D" {
            count += 1
        }
    }
    return count
}
<|file_separator|>

func hexKey(num: String) -> Int {
    var result = 0
    for char in num {
        if char == "A" {
            result += 10
        } else if char == "B" {
            result += 11
        } else if char == "D" {
            result += 13
        } else if char == "E" {
            result += 14
        } else if char == "F" {
            result += 15
        } else {
            result += Int(String(char))!
        }
    }
    return result
}
```swift
// You have been tasked to write a function that receives 
// a hexadecimal number as a string and counts the number of hexadecimal 
// digits that are primes (prime number, or a prime, is a natural number 
// greater than 1 that is not a product of two smaller natural numbers).
// Hexadecimal digits are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.
// Prime numbers are 2, 3, 5, 7, 11, 13, 17,...
// So you have to determine a number of the following digits: 2, 3, 5, 7, 
// B (=decimal 11), D (=decimal 13).
// Note: you may assume the input is always correct or empty string, 
// and symbols A,B,C,D,E,F are always uppercase.
// Examples:
// hexKey(num: "AB") == 1
// hexKey(num: "1077E") == 2
// hexKey(num: "ABED1A33") == 4
// hexKey(num: "123456789ABCDEF0") == 6
// hexKey(num: "2020") == 2
func hexKey(num: String) -> Int {
    var result = 0
    for char in num {
        if char == "A" {
            result += 10
        } else if char == "B" {
            result += 11
        } else if char == "D" {
            result += 13
        } else if char == "E" {
            result += 14
        } else if char == "F" {
            result += 15
        } else {
            result += Int(String(char))!
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func hexKey(num: String) -> Int {
    var result = 0
    for char in num {
        if char == "A" {
            result += 11
        } else if char == "B" {
            result += 13
        } else if char == "D" {
            result += 13
        } else if char == "E" {
            result += 13
        } else if char == "F" {
            result += 13
        } else {
            result += Int(String(char))!
        }
    }
    return result
}
```swift
// You have been tasked to write a function that receives 
// a hexadecimal number as a string and counts the number of hexadecimal 
// digits that are primes (prime number, or a prime, is a natural number 
// greater than 1 that is not a product of two smaller natural numbers).
// Hexadecimal digits are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.
// Prime numbers are 2, 3, 5, 7, 11, 13, 17,...
// So you have to determine a number of the following digits: 2, 3, 5, 7, 
// B (=decimal 11), D (=decimal 13).
// Note: you may assume the input is always correct or empty string, 
// and symbols A,B,C,D,E,F are always uppercase.
// Examples:
// hexKey(num: "AB") == 1
// hexKey(num: "1077E") == 2
// hexKey(num: "ABED1A33") == 4
// hexKey(num: "123456789ABCDEF0") == 6
// hexKey(num: "2020") == 2
func hexKey(num: String) -> Int {
    var result = 0
    for char in num {
        if char == "A" {
            result += 11
        } else if char == "B" {
            result += 13
        } else if char == "D" {
            result += 13
        } else if char == "E" {
            result += 13
        } else if char == "F" {
            result += 13
        } else {
            result += Int(String(char))!
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func decimalToBinary(decimal: Int) -> String {
  var decimal = decimal
  var binary = ""
  while decimal > 0 {
    binary = (decimal % 2 == 0 ? "0" : "1") + binary
    decimal /= 2
  }
  return "db" + binary + "db"
}
```swift
// You will be given a number in decimal form and your task is to convert it to
// binary format. The function should return a string, with each character representing a binary
// number. Each character in the string will be '0' or '1'.
// There will be an extra couple of characters 'db' at the beginning and at the end of the string.
// The extra characters are there to help with the format.
// Examples:
// decimalToBinary(decimal: 15) == "db1111db"
// decimalToBinary(decimal: 32) == "db100000db"
func decimalToBinary(decimal: Int) -> String {
  var decimal = decimal
  var binary = ""
  while decimal > 0 {
    binary = (decimal % 2 == 0 ? "0" : "1") + binary
    decimal /= 2
  }
  return "db" + binary + "db"
}
<|file_separator|>
 // XCTAssertTrue failed

func decimalToBinary(decimal: Int) -> String {
    var decimal = decimal
    var binary = ""
    while decimal > 0 {
        binary = (decimal % 2 == 0 ? "0" : "1") + binary
        decimal /= 2
    }
    return "db" + binary + "db"
}
```swift
// You will be given a number in decimal form and your task is to convert it to
// binary format. The function should return a string, with each character representing a binary
// number. Each character in the string will be '0' or '1'.
// There will be an extra couple of characters 'db' at the beginning and at the end of the string.
// The extra characters are there to help with the format.
// Examples:
// decimalToBinary(decimal: 15) == "db1111db"
// decimalToBinary(decimal: 32) == "db100000db"
func decimalToBinary(decimal: Int) -> String {
    var decimal = decimal
    var binary = ""
    while decimal > 0 {
        binary = (decimal % 2 == 0 ? "0" : "1") + binary
        decimal /= 2
    }
    return "db" + binary + "db"
}
<|file_separator|>
 // XCTAssertTrue failed

func decimalToBinary(decimal: Int) -> String {
  var decimal = decimal
  var binary = ""
  while decimal > 0 {
    binary = (decimal % 2 == 0 ? "0" : "1") + binary
    decimal /= 2
  }
  return "db" + binary + "db"
}
```swift
// You will be given a number in decimal form and your task is to convert it to
// binary format. The function should return a string, with each character representing a binary
// number. Each character in the string will be '0' or '1'.
// There will be an extra couple of characters 'db' at the beginning and at the end of the string.
// The extra characters are there to help with the format.
// Examples:
// decimalToBinary(decimal: 15) == "db1111db"
// decimalToBinary(decimal: 32) == "db100000db"
func decimalToBinary(decimal: Int) -> String {
  var decimal = decimal
  var binary = ""
  while decimal > 0 {
    binary = (decimal % 2 == 0 ? "0" : "1") + binary
    decimal /= 2
  }
  return "db" + binary + "db"
}
<|file_separator|>
 // XCTAssertTrue failed

func decimalToBinary(decimal: Int) -> String {
  var decimal = decimal
  var binary = ""
  while decimal > 0 {
    binary = (decimal % 2 == 0 ? "0" : "1") + binary
    decimal /= 2
  }
  return "db" + binary + "db"
}
```swift
// You will be given a number in decimal form and your task is to convert it to
// binary format. The function should return a string, with each character representing a binary
// number. Each character in the string will be '0' or '1'.
// There will be an extra couple of characters 'db' at the beginning and at the end of the string.
// The extra characters are there to help with the format.
// Examples:
// decimalToBinary(decimal: 15) == "db1111db"
// decimalToBinary(decimal: 32) == "db100000db"
func decimalToBinary(decimal: Int) -> String {
  var decimal = decimal
  var binary = ""
  while decimal > 0 {
    binary = (decimal % 2 == 0 ? "0" : "1") + binary
    decimal /= 2
  }
  return "db" + binary + "db"
}
<|file_separator|>
 // XCTAssertTrue failed

func decimalToBinary(decimal: Int) -> String {
    var decimal = decimal
    var binary = ""
    while decimal > 0 {
        binary = String(decimal % 2) + binary
        decimal /= 2
    }
    return "db" + binary + "db"
}
```swift
// You will be given a number in decimal form and your task is to convert it to
// binary format. The function should return a string, with each character representing a binary
// number. Each character in the string will be '0' or '1'.
// There will be an extra couple of characters 'db' at the beginning and at the end of the string.
// The extra characters are there to help with the format.
// Examples:
// decimalToBinary(decimal: 15) == "db1111db"
// decimalToBinary(decimal: 32) == "db100000db"
func decimalToBinary(decimal: Int) -> String {
    var decimal = decimal
    var binary = ""
    while decimal > 0 {
        binary = String(decimal % 2) + binary
        decimal /= 2
    }
    return "db" + binary + "db"
}
<|file_separator|>
 // XCTAssertTrue failed

func decimalToBinary(decimal: Int) -> String {
    var decimal = decimal
    var binary = ""
    while decimal > 0 {
        binary = String(decimal % 2) + binary
        decimal /= 2
    }
    return "db" + binary + "db"
}
```swift
// You will be given a number in decimal form and your task is to convert it to
// binary format. The function should return a string, with each character representing a binary
// number. Each character in the string will be '0' or '1'.
// There will be an extra couple of characters 'db' at the beginning and at the end of the string.
// The extra characters are there to help with the format.
// Examples:
// decimalToBinary(decimal: 15) == "db1111db"
// decimalToBinary(decimal: 32) == "db100000db"
func decimalToBinary(decimal: Int) -> String {
    var decimal = decimal
    var binary = ""
    while decimal > 0 {
        binary = String(decimal % 2) + binary
        decimal /= 2
    }
    return "db" + binary + "db"
}
<|file_separator|>
 // XCTAssertTrue failed

func decimalToBinary(decimal: Int) -> String {
    var decimal = decimal
    var binary = ""
    while decimal > 0 {
        binary = String(decimal % 2) + binary
        decimal /= 2
    }
    return "db" + binary + "db"
}
```swift
// You will be given a number in decimal form and your task is to convert it to
// binary format. The function should return a string, with each character representing a binary
// number. Each character in the string will be '0' or '1'.
// There will be an extra couple of characters 'db' at the beginning and at the end of the string.
// The extra characters are there to help with the format.
// Examples:
// decimalToBinary(decimal: 15) == "db1111db"
// decimalToBinary(decimal: 32) == "db100000db"
func decimalToBinary(decimal: Int) -> String {
    var decimal = decimal
    var binary = ""
    while decimal > 0 {
        binary = String(decimal % 2) + binary
        decimal /= 2
    }
    return "db" + binary + "db"
}
<|file_separator|>
 // XCTAssertTrue failed

func decimalToBinary(decimal: Int) -> String {
    var decimal = decimal
    var binary = ""
    while decimal > 0 {
        binary = String(decimal % 2) + binary
        decimal /= 2
    }
    return "db" + binary + "db"
}
```swift
// You will be given a number in decimal form and your task is to convert it to
// binary format. The function should return a string, with each character representing a binary
// number. Each character in the string will be '0' or '1'.
// There will be an extra couple of characters 'db' at the beginning and at the end of the string.
// The extra characters are there to help with the format.
// Examples:
// decimalToBinary(decimal: 15) == "db1111db"
// decimalToBinary(decimal: 32) == "db100000db"
func decimalToBinary(decimal: Int) -> String {
    var decimal = decimal
    var binary = ""
    while decimal > 0 {
        binary = String(decimal % 2) + binary
        decimal /= 2
    }
    return "db" + binary + "db"
}
<|file_separator|>
 // XCTAssertTrue failed

func decimalToBinary(decimal: Int) -> String {
  var decimal = decimal
  var binary = ""
  while decimal > 0 {
    binary = (decimal % 2 == 0 ? "0" : "1") + binary
    decimal /= 2
  }
  return "db" + binary + "db"
}
```swift
// You will be given a number in decimal form and your task is to convert it to
// binary format. The function should return a string, with each character representing a binary
// number. Each character in the string will be '0' or '1'.
// There will be an extra couple of characters 'db' at the beginning and at the end of the string.
// The extra characters are there to help with the format.
// Examples:
// decimalToBinary(decimal: 15) == "db1111db"
// decimalToBinary(decimal: 32) == "db100000db"
func decimalToBinary(decimal: Int) -> String {
  var decimal = decimal
  var binary = ""
  while decimal > 0 {
    binary = (decimal % 2 == 0 ? "0" : "1") + binary
    decimal /= 2
  }
  return "db" + binary + "db"
}
<|file_separator|>
 // XCTAssertTrue failed

func decimalToBinary(decimal: Int) -> String {
    var decimal = decimal
    var binary = ""
    while decimal > 0 {
        binary = String(decimal % 2) + binary
        decimal /= 2
    }
    return "db" + binary + "db"
}
```swift
// You will be given a number in decimal form and your task is to convert it to
// binary format. The function should return a string, with each character representing a binary
// number. Each character in the string will be '0' or '1'.
// There will be an extra couple of characters 'db' at the beginning and at the end of the string.
// The extra characters are there to help with the format.
// Examples:
// decimalToBinary(decimal: 15) == "db1111db"
// decimalToBinary(decimal: 32) == "db100000db"
func decimalToBinary(decimal: Int) -> String {
    var decimal = decimal
    var binary = ""
    while decimal > 0 {
        binary = String(decimal % 2) + binary
        decimal /= 2
    }
    return "db" + binary + "db"
}
<|file_separator|>
 // XCTAssertTrue failed

```swift
// You are given a string s.
// Your task is to check if the string is hapswift or not.
// A string is hapswift if its length is at least 3 and every 3 consecutive letters are distinct
// For example:
// isHappy(s: "a") == false
// isHappy(s: "aa") == false
// isHappy(s: "abcd") == true
// isHappy(s: "aabb") == false
// isHappy(s: "adb") == true
// isHappy(s: "xyy") == false
func isHappy(s: String) -> Bool {
    var s = s
    var s2 = ""
    var s3 = ""
    var s4 = ""
    var s5 = ""
    var s6 = ""
    var s7 = ""
    var s8 = ""
    var s9 = ""
    var s10 = ""
    var s11 = ""
    var s12 = ""
    var s13 = ""
    var s14 = ""
    var s15 = ""
    var s16 = ""
    var s17 = ""
    var s18 = ""
    var s19 = ""
    var s20 = ""
    var s21 = ""
    var s22 = ""
    var s23 = ""
    var s24 = ""
    var s25 = ""
    var s26 = ""
    var s27 = ""
    var s28 = ""
    var s29 = ""
    var s30 = ""
    var s31 = ""
    var s32 = ""
    var s33 = ""
    var s34 = ""
    var s35 = ""
    var s36 = ""
    var s37 = ""
    var s38 = ""
    var s39 = ""
    var s40 = ""
    var s41 = ""
    var s42 = ""
    var s43 = ""
    var s44 = ""
    var s45 = ""
    var s46 = ""
    var s47 = ""
    var s48 = ""
    var s49 = ""
    var s50 = ""
    var s51 = ""
    var s52 = ""
    var s53 = ""
    var s54 = ""
    var s55 = ""
    var s56 = ""
    var s57 = ""
    var s58 = ""
    var s59 = ""
    var s60 = ""
    var s61 = ""
    var s62 = ""
    var s63 = ""
    var s64 = ""
    var s65 = ""
    var s66 = ""
    var s67 = ""
    var s68 = ""
    var s69 = ""
    var s70 = ""
    var s71 = ""
    var s72 = ""
    var s73 = ""
    var s74 = ""
    var s75 = ""
    var s76 = ""
    var s77 = ""
    var s78 = ""
    var s79 = ""
    var s80 = ""
    var s81 = ""
    var s82 = ""
    var s83 = ""
    var s84 = ""
    var s85 = ""
    var s86 = ""
    var s87 = ""
    var s88 = ""
    var s89 = ""
    var s90 = ""
    var s91 = ""
    var s92 = ""
    var s93 = ""
    var s94 = ""
    var s95 = ""
    var s96 = ""
    var s97 = ""
    var s98 = ""
    var s99 = ""
    var s100 = ""
    var s101 = ""
    var s102 = ""
    var s103 = ""
    var s104 = ""
    var s105 = ""
    var s106 = ""
    var s107 = ""
    var s108 = ""
    var s109 = ""
    var s110 = ""
    var s111 = ""
    var s112 = ""
    var s113 = ""
    var s114 = ""
    var s115 = ""
    var s116 = ""
    var s117 = ""
    var s118 = ""
    var s119 = ""
    var s120 = ""
    var s121 = ""
    var s122 = ""
    var s123 = ""
    var s124 = ""
    var s125 = ""
    var s126 =
XCTAssertTrue(isHappy(s: "a") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "aa") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "abcd") == true) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "aabb") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "adb") == true) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "xyy") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "iopaxpoi") == true) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "iopaxioi") == false) // cannot find 'isHappy' in scope

```swift
// You are given a string s.
// Your task is to check if the string is hapswift or not.
// A string is hapswift if its length is at least 3 and every 3 consecutive letters are distinct
// For example:
// isHappy(s: "a") == false
// isHappy(s: "aa") == false
// isHappy(s: "abcd") == true
// isHappy(s: "aabb") == false
// isHappy(s: "adb") == true
// isHappy(s: "xyy") == false
func isHappy(s: String) -> Bool {
    var s = s
    var s1 = ""
    var s2 = ""
    var s3 = ""
    var s4 = ""
    var s5 = ""
    var s6 = ""
    var s7 = ""
    var s8 = ""
    var s9 = ""
    var s10 = ""
    var s11 = ""
    var s12 = ""
    var s13 = ""
    var s14 = ""
    var s15 = ""
    var s16 = ""
    var s17 = ""
    var s18 = ""
    var s19 = ""
    var s20 = ""
    var s21 = ""
    var s22 = ""
    var s23 = ""
    var s24 = ""
    var s25 = ""
    var s26 = ""
    var s27 = ""
    var s28 = ""
    var s29 = ""
    var s30 = ""
    var s31 = ""
    var s32 = ""
    var s33 = ""
    var s34 = ""
    var s35 = ""
    var s36 = ""
    var s37 = ""
    var s38 = ""
    var s39 = ""
    var s40 = ""
    var s41 = ""
    var s42 = ""
    var s43 = ""
    var s44 = ""
    var s45 = ""
    var s46 = ""
    var s47 = ""
    var s48 = ""
    var s49 = ""
    var s50 = ""
    var s51 = ""
    var s52 = ""
    var s53 = ""
    var s54 = ""
    var s55 = ""
    var s56 = ""
    var s57 = ""
    var s58 = ""
    var s59 = ""
    var s60 = ""
    var s61 = ""
    var s62 = ""
    var s63 = ""
    var s64 = ""
    var s65 = ""
    var s66 = ""
    var s67 = ""
    var s68 = ""
    var s69 = ""
    var s70 = ""
    var s71 = ""
    var s72 = ""
    var s73 = ""
    var s74 = ""
    var s75 = ""
    var s76 = ""
    var s77 = ""
    var s78 = ""
    var s79 = ""
    var s80 = ""
    var s81 = ""
    var s82 = ""
    var s83 = ""
    var s84 = ""
    var s85 = ""
    var s86 = ""
    var s87 = ""
    var s88 = ""
    var s89 = ""
    var s90 = ""
    var s91 = ""
    var s92 = ""
    var s93 = ""
    var s94 = ""
    var s95 = ""
    var s96 = ""
    var s97 = ""
    var s98 = ""
    var s99 = ""
    var s100 = ""
    var s101 = ""
    var s102 = ""
    var s103 = ""
    var s104 = ""
    var s105 = ""
    var s106 = ""
    var s107 = ""
    var s108 = ""
    var s109 = ""
    var s110 = ""
    var s111 = ""
    var s112 = ""
    var s113 = ""
    var s114 = ""
    var s115 = ""
    var s116 = ""
    var s117 = ""
    var s118 = ""
    var s119 = ""
    var s120 = ""
    var s121 = ""
    var s122 = ""
    var s123 = ""
    var s124 = ""
    var s125 = ""
XCTAssertTrue(isHappy(s: "a") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "aa") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "abcd") == true) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "aabb") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "adb") == true) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "xyy") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "iopaxpoi") == true) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "iopaxioi") == false) // cannot find 'isHappy' in scope

func isHappy(s: String) -> Bool {
    var s = s
    var visited = [String]()
    while s.count > 0 {
        if visited.contains(s) {
            return false
        }
        visited.append(s)
        var sum = 0
        for char in s {
            sum += Int(String(char))!
        }
        s = String(sum)
    }
    return true
}
```swift
// You are given a string s.
// Your task is to check if the string is hapswift or not.
// A string is hapswift if its length is at least 3 and every 3 consecutive letters are distinct
// For example:
// isHappy(s: "a") == false
// isHappy(s: "aa") == false
// isHappy(s: "abcd") == true
// isHappy(s: "aabb") == false
// isHappy(s: "adb") == true
// isHappy(s: "xyy") == false
func isHappy(s: String) -> Bool {
    var s = s
    var visited = [String]()
    while s.count > 0 {
        if visited.contains(s) {
            return false
        }
        visited.append(s)
        var sum = 0
        for char in s {
            sum += Int(String(char))!
        }
        s = String(sum)
    }
    return true
}
<|file_separator|>
 // Fatal error: Unexpectedly found nil while unwrapping an Optional value

func isHappy(s: String) -> Bool {
    var s = s
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    if s == 1 {
        return true
    }
    if s == 4 {
        return false
    }
    return isHappy(s: String(s))
}
```swift
// You are given a string s.
// Your task is to check if the string is hapswift or not.
// A string is hapswift if its length is at least 3 and every 3 consecutive letters are distinct
// For example:
// isHappy(s: "a") == false
// isHappy(s: "aa") == false
// isHappy(s: "abcd") == true
// isHappy(s: "aabb") == false
// isHappy(s: "adb") == true
// isHappy(s: "xyy") == false
func isHappy(s: String) -> Bool {
    var s = s
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    if s == 1 {
        return true
    }
    if s == 4 {
        return false
    }
    return isHappy(s: String(s))
}
<|file_separator|>
var s = s.map { String($0) } // invalid redeclaration of 's'

```swift
// You are given a string s.
// Your task is to check if the string is hapswift or not.
// A string is hapswift if its length is at least 3 and every 3 consecutive letters are distinct
// For example:
// isHappy(s: "a") == false
// isHappy(s: "aa") == false
// isHappy(s: "abcd") == true
// isHappy(s: "aabb") == false
// isHappy(s: "adb") == true
// isHappy(s: "xyy") == false
func isHappy(s: String) -> Bool {
    var s = s
    var s2 = ""
    var s3 = ""
    var s4 = ""
    var s5 = ""
    var s6 = ""
    var s7 = ""
    var s8 = ""
    var s9 = ""
    var s10 = ""
    var s11 = ""
    var s12 = ""
    var s13 = ""
    var s14 = ""
    var s15 = ""
    var s16 = ""
    var s17 = ""
    var s18 = ""
    var s19 = ""
    var s20 = ""
    var s21 = ""
    var s22 = ""
    var s23 = ""
    var s24 = ""
    var s25 = ""
    var s26 = ""
    var s27 = ""
    var s28 = ""
    var s29 = ""
    var s30 = ""
    var s31 = ""
    var s32 = ""
    var s33 = ""
    var s34 = ""
    var s35 = ""
    var s36 = ""
    var s37 = ""
    var s38 = ""
    var s39 = ""
    var s40 = ""
    var s41 = ""
    var s42 = ""
    var s43 = ""
    var s44 = ""
    var s45 = ""
    var s46 = ""
    var s47 = ""
    var s48 = ""
    var s49 = ""
    var s50 = ""
    var s51 = ""
    var s52 = ""
    var s53 = ""
    var s54 = ""
    var s55 = ""
    var s56 = ""
    var s57 = ""
    var s58 = ""
    var s59 = ""
    var s60 = ""
    var s61 = ""
    var s62 = ""
    var s63 = ""
    var s64 = ""
    var s65 = ""
    var s66 = ""
    var s67 = ""
    var s68 = ""
    var s69 = ""
    var s70 = ""
    var s71 = ""
    var s72 = ""
    var s73 = ""
    var s74 = ""
    var s75 = ""
    var s76 = ""
    var s77 = ""
    var s78 = ""
    var s79 = ""
    var s80 = ""
    var s81 = ""
    var s82 = ""
    var s83 = ""
    var s84 = ""
    var s85 = ""
    var s86 = ""
    var s87 = ""
    var s88 = ""
    var s89 = ""
    var s90 = ""
    var s91 = ""
    var s92 = ""
    var s93 = ""
    var s94 = ""
    var s95 = ""
    var s96 = ""
    var s97 = ""
    var s98 = ""
    var s99 = ""
    var s100 = ""
    var s101 = ""
    var s102 = ""
    var s103 = ""
    var s104 = ""
    var s105 = ""
    var s106 = ""
    var s107 = ""
    var s108 = ""
    var s109 = ""
    var s110 = ""
    var s111 = ""
    var s112 = ""
    var s113 = ""
    var s114 = ""
    var s115 = ""
    var s116 = ""
    var s117 = ""
    var s118 = ""
    var s119 = ""
    var s120 = ""
    var s121 = ""
    var s122 = ""
    var s123 = ""
    var s124 = ""
    var s125 = ""
    var s126 =
XCTAssertTrue(isHappy(s: "a") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "aa") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "abcd") == true) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "aabb") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "adb") == true) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "xyy") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "iopaxpoi") == true) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "iopaxioi") == false) // cannot find 'isHappy' in scope

```swift
// You are given a string s.
// Your task is to check if the string is hapswift or not.
// A string is hapswift if its length is at least 3 and every 3 consecutive letters are distinct
// For example:
// isHappy(s: "a") == false
// isHappy(s: "aa") == false
// isHappy(s: "abcd") == true
// isHappy(s: "aabb") == false
// isHappy(s: "adb") == true
// isHappy(s: "xyy") == false
func isHappy(s: String) -> Bool {
    var s = s
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.map { $0 * $0 }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.map { $0 * $0 }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.map { $0 * $0 }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.map { $0 * $0 }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.map { $0 * $0 }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.map { $0 * $0 }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.map { $0 * $0 }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.map { $0 * $0 }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.map { $0 * $0 }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.map { $0 * $0 }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.map { $0 * $0 }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.map { $0 * $0 }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.map { $0 * $0 }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.map { $0 * $0 }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.map { $0 * $0 }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.map { $0 * $0 }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.map { $0 * $0 }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.map { $0 * $0 }
    var s = s.reduce(0, +)
    var s = s.map { String
XCTAssertTrue(isHappy(s: "a") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "aa") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "abcd") == true) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "aabb") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "adb") == true) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "xyy") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "iopaxpoi") == true) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "iopaxioi") == false) // cannot find 'isHappy' in scope

```swift
// You are given a string s.
// Your task is to check if the string is hapswift or not.
// A string is hapswift if its length is at least 3 and every 3 consecutive letters are distinct
// For example:
// isHappy(s: "a") == false
// isHappy(s: "aa") == false
// isHappy(s: "abcd") == true
// isHappy(s: "aabb") == false
// isHappy(s: "adb") == true
// isHappy(s: "xyy") == false
func isHappy(s: String) -> Bool {
    var s = s
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s.reduce(0, +)
    var s = s.map { String($0) }
    var s = s.map { Int($0)! }
    var s = s
XCTAssertTrue(isHappy(s: "a") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "aa") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "abcd") == true) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "aabb") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "adb") == true) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "xyy") == false) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "iopaxpoi") == true) // cannot find 'isHappy' in scope
XCTAssertTrue(isHappy(s: "iopaxioi") == false) // cannot find 'isHappy' in scope

func isHappy(s: String) -> Bool {
    var s = s
    var i = 0
    while s.count > 1 {
        var temp = ""
        for _ in 0..<s.count {
            let a = s.remove(at: s.startIndex)
            let b = s.remove(at: s.startIndex)
            temp += String(a.asciiValue! + b.asciiValue!)
        }
        s = temp
        i += 1
    }
    return s == "1"
}
```swift
// You are given a string s.
// Your task is to check if the string is hapswift or not.
// A string is hapswift if its length is at least 3 and every 3 consecutive letters are distinct
// For example:
// isHappy(s: "a") == false
// isHappy(s: "aa") == false
// isHappy(s: "abcd") == true
// isHappy(s: "aabb") == false
// isHappy(s: "adb") == true
// isHappy(s: "xyy") == false
func isHappy(s: String) -> Bool {
    var s = s
    var i = 0
    while s.count > 1 {
        var temp = ""
        for _ in 0..<s.count {
            let a = s.remove(at: s.startIndex)
            let b = s.remove(at: s.startIndex)
            temp += String(a.asciiValue! + b.asciiValue!)
        }
        s = temp
        i += 1
    }
    return s == "1"
}
<|file_separator|>
 // Fatal error: String index is out of bounds

func isHappy(s: String) -> Bool {
    var s = s
    var visited = Set<String>()
    while s != "1" {
        if visited.contains(s) {
            return false
        }
        visited.insert(s)
        var sum = 0
        for char in s {
            sum += Int(String(char))! * Int(String(char))!
        }
        s = String(sum)
    }
    return true
}
```swift
// You are given a string s.
// Your task is to check if the string is hapswift or not.
// A string is hapswift if its length is at least 3 and every 3 consecutive letters are distinct
// For example:
// isHappy(s: "a") == false
// isHappy(s: "aa") == false
// isHappy(s: "abcd") == true
// isHappy(s: "aabb") == false
// isHappy(s: "adb") == true
// isHappy(s: "xyy") == false
func isHappy(s: String) -> Bool {
    var s = s
    var visited = Set<String>()
    while s != "1" {
        if visited.contains(s) {
            return false
        }
        visited.insert(s)
        var sum = 0
        for char in s {
            sum += Int(String(char))! * Int(String(char))!
        }
        s = String(sum)
    }
    return true
}
<|file_separator|>
 // Fatal error: Unexpectedly found nil while unwrapping an Optional value

func isHappy(s: String) -> Bool {
    var visited = Set<String>()
    var current = s
    while !visited.contains(current) {
        visited.insert(current)
        var sum = 0
        for char in current {
            sum += Int(String(char))! * Int(String(char))!
        }
        if sum == 1 {
            return true
        }
        current = String(sum)
    }
    return false
}
```swift
// You are given a string s.
// Your task is to check if the string is hapswift or not.
// A string is hapswift if its length is at least 3 and every 3 consecutive letters are distinct
// For example:
// isHappy(s: "a") == false
// isHappy(s: "aa") == false
// isHappy(s: "abcd") == true
// isHappy(s: "aabb") == false
// isHappy(s: "adb") == true
// isHappy(s: "xyy") == false
func isHappy(s: String) -> Bool {
    var visited = Set<String>()
    var current = s
    while !visited.contains(current) {
        visited.insert(current)
        var sum = 0
        for char in current {
            sum += Int(String(char))! * Int(String(char))!
        }
        if sum == 1 {
            return true
        }
        current = String(sum)
    }
    return false
}
<|file_separator|>
 // Fatal error: Unexpectedly found nil while unwrapping an Optional value

func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades = [String]()
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
```swift
// It is the last week of the semester and the teacher has to give the grades
// to students. The teacher has been making her own algorithm for grading.
// The only problem is, she has lost the code she used for grading.
// She has given you an array of GPAs for some students and you have to write 
// a function that can output an array of letter grades using the following table:
// GPA       |    Letter grade
// 4.0                A+
// > 3.7                A 
// > 3.3                A- 
// > 3.0                B+
// > 2.7                B 
// > 2.3                B-
// > 2.0                C+
// > 1.7                C
// > 1.3                C-
// > 1.0                D+ 
// > 0.7                D 
// > 0.0                D-
// 0.0                E
// Example:
// numericalLetterGrade(grades: [4.0, 3, 1.7, 2, 3.5]) == ["A+", "B", "C-", "C", "A-"]
func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades = [String]()
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
<|file_separator|>

func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades = [String]()
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
```swift
// It is the last week of the semester and the teacher has to give the grades
// to students. The teacher has been making her own algorithm for grading.
// The only problem is, she has lost the code she used for grading.
// She has given you an array of GPAs for some students and you have to write 
// a function that can output an array of letter grades using the following table:
// GPA       |    Letter grade
// 4.0                A+
// > 3.7                A 
// > 3.3                A- 
// > 3.0                B+
// > 2.7                B 
// > 2.3                B-
// > 2.0                C+
// > 1.7                C
// > 1.3                C-
// > 1.0                D+ 
// > 0.7                D 
// > 0.0                D-
// 0.0                E
// Example:
// numericalLetterGrade(grades: [4.0, 3, 1.7, 2, 3.5]) == ["A+", "B", "C-", "C", "A-"]
func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades = [String]()
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
<|file_separator|>

func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades = [String]()
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
```swift
// It is the last week of the semester and the teacher has to give the grades
// to students. The teacher has been making her own algorithm for grading.
// The only problem is, she has lost the code she used for grading.
// She has given you an array of GPAs for some students and you have to write 
// a function that can output an array of letter grades using the following table:
// GPA       |    Letter grade
// 4.0                A+
// > 3.7                A 
// > 3.3                A- 
// > 3.0                B+
// > 2.7                B 
// > 2.3                B-
// > 2.0                C+
// > 1.7                C
// > 1.3                C-
// > 1.0                D+ 
// > 0.7                D 
// > 0.0                D-
// 0.0                E
// Example:
// numericalLetterGrade(grades: [4.0, 3, 1.7, 2, 3.5]) == ["A+", "B", "C-", "C", "A-"]
func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades = [String]()
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
<|file_separator|>

func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades = [String]()
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
```swift
// It is the last week of the semester and the teacher has to give the grades
// to students. The teacher has been making her own algorithm for grading.
// The only problem is, she has lost the code she used for grading.
// She has given you an array of GPAs for some students and you have to write 
// a function that can output an array of letter grades using the following table:
// GPA       |    Letter grade
// 4.0                A+
// > 3.7                A 
// > 3.3                A- 
// > 3.0                B+
// > 2.7                B 
// > 2.3                B-
// > 2.0                C+
// > 1.7                C
// > 1.3                C-
// > 1.0                D+ 
// > 0.7                D 
// > 0.0                D-
// 0.0                E
// Example:
// numericalLetterGrade(grades: [4.0, 3, 1.7, 2, 3.5]) == ["A+", "B", "C-", "C", "A-"]
func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades = [String]()
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
<|file_separator|>

func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades: [String] = []
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
```swift
// It is the last week of the semester and the teacher has to give the grades
// to students. The teacher has been making her own algorithm for grading.
// The only problem is, she has lost the code she used for grading.
// She has given you an array of GPAs for some students and you have to write 
// a function that can output an array of letter grades using the following table:
// GPA       |    Letter grade
// 4.0                A+
// > 3.7                A 
// > 3.3                A- 
// > 3.0                B+
// > 2.7                B 
// > 2.3                B-
// > 2.0                C+
// > 1.7                C
// > 1.3                C-
// > 1.0                D+ 
// > 0.7                D 
// > 0.0                D-
// 0.0                E
// Example:
// numericalLetterGrade(grades: [4.0, 3, 1.7, 2, 3.5]) == ["A+", "B", "C-", "C", "A-"]
func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades: [String] = []
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
<|file_separator|>

func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades = [String]()
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
```swift
// It is the last week of the semester and the teacher has to give the grades
// to students. The teacher has been making her own algorithm for grading.
// The only problem is, she has lost the code she used for grading.
// She has given you an array of GPAs for some students and you have to write 
// a function that can output an array of letter grades using the following table:
// GPA       |    Letter grade
// 4.0                A+
// > 3.7                A 
// > 3.3                A- 
// > 3.0                B+
// > 2.7                B 
// > 2.3                B-
// > 2.0                C+
// > 1.7                C
// > 1.3                C-
// > 1.0                D+ 
// > 0.7                D 
// > 0.0                D-
// 0.0                E
// Example:
// numericalLetterGrade(grades: [4.0, 3, 1.7, 2, 3.5]) == ["A+", "B", "C-", "C", "A-"]
func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades = [String]()
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
<|file_separator|>

func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades = [String]()
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
```swift
// It is the last week of the semester and the teacher has to give the grades
// to students. The teacher has been making her own algorithm for grading.
// The only problem is, she has lost the code she used for grading.
// She has given you an array of GPAs for some students and you have to write 
// a function that can output an array of letter grades using the following table:
// GPA       |    Letter grade
// 4.0                A+
// > 3.7                A 
// > 3.3                A- 
// > 3.0                B+
// > 2.7                B 
// > 2.3                B-
// > 2.0                C+
// > 1.7                C
// > 1.3                C-
// > 1.0                D+ 
// > 0.7                D 
// > 0.0                D-
// 0.0                E
// Example:
// numericalLetterGrade(grades: [4.0, 3, 1.7, 2, 3.5]) == ["A+", "B", "C-", "C", "A-"]
func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades = [String]()
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
<|file_separator|>

func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades = [String]()
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
```swift
// It is the last week of the semester and the teacher has to give the grades
// to students. The teacher has been making her own algorithm for grading.
// The only problem is, she has lost the code she used for grading.
// She has given you an array of GPAs for some students and you have to write 
// a function that can output an array of letter grades using the following table:
// GPA       |    Letter grade
// 4.0                A+
// > 3.7                A 
// > 3.3                A- 
// > 3.0                B+
// > 2.7                B 
// > 2.3                B-
// > 2.0                C+
// > 1.7                C
// > 1.3                C-
// > 1.0                D+ 
// > 0.7                D 
// > 0.0                D-
// 0.0                E
// Example:
// numericalLetterGrade(grades: [4.0, 3, 1.7, 2, 3.5]) == ["A+", "B", "C-", "C", "A-"]
func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades = [String]()
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
<|file_separator|>

func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades = [String]()
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
```swift
// It is the last week of the semester and the teacher has to give the grades
// to students. The teacher has been making her own algorithm for grading.
// The only problem is, she has lost the code she used for grading.
// She has given you an array of GPAs for some students and you have to write 
// a function that can output an array of letter grades using the following table:
// GPA       |    Letter grade
// 4.0                A+
// > 3.7                A 
// > 3.3                A- 
// > 3.0                B+
// > 2.7                B 
// > 2.3                B-
// > 2.0                C+
// > 1.7                C
// > 1.3                C-
// > 1.0                D+ 
// > 0.7                D 
// > 0.0                D-
// 0.0                E
// Example:
// numericalLetterGrade(grades: [4.0, 3, 1.7, 2, 3.5]) == ["A+", "B", "C-", "C", "A-"]
func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades = [String]()
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
<|file_separator|>

func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades = [String]()
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
```swift
// It is the last week of the semester and the teacher has to give the grades
// to students. The teacher has been making her own algorithm for grading.
// The only problem is, she has lost the code she used for grading.
// She has given you an array of GPAs for some students and you have to write 
// a function that can output an array of letter grades using the following table:
// GPA       |    Letter grade
// 4.0                A+
// > 3.7                A 
// > 3.3                A- 
// > 3.0                B+
// > 2.7                B 
// > 2.3                B-
// > 2.0                C+
// > 1.7                C
// > 1.3                C-
// > 1.0                D+ 
// > 0.7                D 
// > 0.0                D-
// 0.0                E
// Example:
// numericalLetterGrade(grades: [4.0, 3, 1.7, 2, 3.5]) == ["A+", "B", "C-", "C", "A-"]
func numericalLetterGrade(grades: [Double]) -> [String] {
    var letterGrades = [String]()
    for grade in grades {
        if grade >= 4.0 {
            letterGrades.append("A+")
        } else if grade > 3.7 {
            letterGrades.append("A")
        } else if grade > 3.3 {
            letterGrades.append("A-")
        } else if grade > 3.0 {
            letterGrades.append("B+")
        } else if grade > 2.7 {
            letterGrades.append("B")
        } else if grade > 2.3 {
            letterGrades.append("B-")
        } else if grade > 2.0 {
            letterGrades.append("C+")
        } else if grade > 1.7 {
            letterGrades.append("C")
        } else if grade > 1.3 {
            letterGrades.append("C-")
        } else if grade > 1.0 {
            letterGrades.append("D+")
        } else if grade > 0.7 {
            letterGrades.append("D")
        } else if grade > 0.0 {
            letterGrades.append("D-")
        } else {
            letterGrades.append("E")
        }
    }
    return letterGrades
}
<|file_separator|>

func primeLength(string: String) -> Bool {
  let stringLength = string.count
  var isPrime = true
  for i in 2..<stringLength {
    if stringLength % i == 0 {
      isPrime = false
      break
    }
  }
  return isPrime
}
```swift
// Write a function that takes a string and returns true if the string
// length is a prime number or false otherwise
// Examples
// primeLength(string: "Hello") == true
// primeLength(string: "abcdcba") == true
// primeLength(string: "kittens") == true
// primeLength(string: "orange") == false
func primeLength(string: String) -> Bool {
  let stringLength = string.count
  var isPrime = true
  for i in 2..<stringLength {
    if stringLength % i == 0 {
      isPrime = false
      break
    }
  }
  return isPrime
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func primeLength(string: String) -> Bool {
    if string.count == 1 {
        return false
    }
    
    for i in 2..<string.count {
        if string.count % i == 0 {
            return false
        }
    }
    
    return true
}

func palindrome(string: String) -> Bool {
    var reversed = ""
    
    for i in string.indices {
        reversed = string[string.index(before: string.endIndex)] + reversed
    }
    
    return string == reversed
}

func pangram(string: String) -> Bool {
    let alphabet = "abcdefghijklmnopqrstuvwxyz"
    
    for char in alphabet {
        if !string.contains(char) {
            return false
        }
    }
    
    return true
}
```swift
// Write a function that takes a string and returns true if the string
// length is a prime number or false otherwise
// Examples
// primeLength(string: "Hello") == true
// primeLength(string: "abcdcba") == true
// primeLength(string: "kittens") == true
// primeLength(string: "orange") == false
func primeLength(string: String) -> Bool {
    if string.count == 1 {
        return false
    }
    
    for i in 2..<string.count {
        if string.count % i == 0 {
            return false
        }
    }
    
    return true
}

// Write a function that takes a string and returns true if the string
// is a palindrome or false otherwise
// Examples
// palindrome(string: "racecar") == true
// palindrome(string: "hello") == false
// palindrome(string: "racecar") == true
func palindrome(string: String) -> Bool {
    var reversed = ""
    
    for i in string.indices {
        reversed = string[string.index(before: string.endIndex)] + reversed
    }
    
    return string == reversed
}

// Write a function that takes a string and returns true if the string
// is a pangram or false otherwise
// Examples
// pangram(string: "The quick brown fox jumps over the lazy dog") == true
// pangram(string: "The quick brown fox jumps over the") == false
func pangram(string: String) -> Bool {
    let alphabet = "abcdefghijklmnopqrstuvwxyz"
    
    for char in alphabet {
        if !string.contains(char) {
            return false
        }
    }
    
    return true
}

// Write a function that takes a string and returns true if the string
// is a palindrome or false otherwise
// Examples
// palindrome(string: "racecar") == true
// palindrome(string: "hello") == false
// palindrome(string: "racecar") == true
func palindrome(string: String) -> Bool {
    var reversed = ""
    
    for i in string.indices {
        reversed = string[string.index(before: string.endIndex)] + reversed
    }
    
    return string == reversed
}

// Write a function that takes a string and returns true if the string
// is a pangram or false otherwise
// Examples
// pangram(string: "The quick brown fox jumps over the lazy dog") == true
// pangram(string: "The quick brown fox jumps over the") == false
func pangram(string: String) -> Bool {
    let alphabet = "abcdefghijklmnopqrstuvwxyz"
    
    for char in alphabet {
        if !string.contains(char) {
            return false
        }
    }
    
    return true
}

// Write a function that takes a string and returns true if the string
// is a palindrome or false otherwise
// Examples
// palindrome(string: "racecar") == true
// palindrome(string: "hello") == false
// palindrome(string: "racecar") == true
func palindrome(string: String) -> Bool {
    var reversed = ""
    
    for i in string.indices {
        reversed = string[string.index(before: string.endIndex)] + reversed
    }
    
    return string == reversed
}

// Write a function that takes a string and returns true if the string
// is a pangram or false otherwise
// Examples
// pangram(string: "The quick brown fox jumps over the lazy dog") == true
// pangram(string: "The quick brown fox jumps over the") == false
func pangram(string: String) -> Bool {
    let alphabet = "abcdefghijklmnopqrstuvwxyz"
    
    for char in alphabet {
        if !string.contains(char) {
            return false
        }
    }
    
    return true
}

// Write a function that takes a string and returns true if the string
// is a palindrome or false otherwise
// Examples
// palindrome(string: "racecar") == true
// palindrome(string: "hello") == false
// palindrome(string: "racecar") == true
func palindrome(string: String) -> Bool {
    var reversed = ""
    
    for i in string.indices {
        reversed = string[string.index(before: string.endIndex)] + reversed
    }
    
    return string == reversed
}

// Write a function that takes a string and returns true if the string
// is a pangram or false otherwise
// Examples
// pangram(string: "The quick brown fox jumps over the lazy dog") == true
// pangram(string: "The quick brown fox jumps over the") == false
func pangram(string: String) -> Bool {
    let alphabet = "abcdefghijklmnopqrstuvwxyz"
    
    for char in alphabet {
        if !string.contains(char) {
            return false
reversed = string[string.index(before: string.endIndex)] + reversed // subscript 'subscript(_:)' requires that 'String.Index' conform to 'RangeExpression'

func primeLength(string: String) -> Bool {
    if string.count == 1 {
        return false
    }
    for i in 2..<string.count {
        if string.count % i == 0 {
            return false
        }
    }
    return true
}

func palindrome(string: String) -> Bool {
    if string == String(string.reversed()) {
        return true
    }
    return false
}
```swift
// Write a function that takes a string and returns true if the string
// length is a prime number or false otherwise
// Examples
// primeLength(string: "Hello") == true
// primeLength(string: "abcdcba") == true
// primeLength(string: "kittens") == true
// primeLength(string: "orange") == false
func primeLength(string: String) -> Bool {
    if string.count == 1 {
        return false
    }
    for i in 2..<string.count {
        if string.count % i == 0 {
            return false
        }
    }
    return true
}

// Write a function that takes a string and returns true if the string
// is a palindrome or false otherwise
// Examples
// palindrome(string: "racecar") == true
// palindrome(string: "Hello") == false
// palindrome(string: "racecar") == true
func palindrome(string: String) -> Bool {
    if string == String(string.reversed()) {
        return true
    }
    return false
}

// Write a function that takes a string and returns true if the string
// is a palindrome or false otherwise
// Examples
// palindrome(string: "racecar") == true
// palindrome(string: "Hello") == false
// palindrome(string: "racecar") == true
func palindrome(string: String) -> Bool {
    if string == String(string.reversed()) {
        return true
    }
    return false
}

// Write a function that takes a string and returns true if the string
// is a palindrome or false otherwise
// Examples
// palindrome(string: "racecar") == true
// palindrome(string: "Hello") == false
// palindrome(string: "racecar") == true
func palindrome(string: String) -> Bool {
    if string == String(string.reversed()) {
        return true
    }
    return false
}

// Write a function that takes a string and returns true if the string
// is a palindrome or false otherwise
// Examples
// palindrome(string: "racecar") == true
// palindrome(string: "Hello") == false
// palindrome(string: "racecar") == true
func palindrome(string: String) -> Bool {
    if string == String(string.reversed()) {
        return true
    }
    return false
}

// Write a function that takes a string and returns true if the string
// is a palindrome or false otherwise
// Examples
// palindrome(string: "racecar") == true
// palindrome(string: "Hello") == false
// palindrome(string: "racecar") == true
func palindrome(string: String) -> Bool {
    if string == String(string.reversed()) {
        return true
    }
    return false
}

// Write a function that takes a string and returns true if the string
// is a palindrome or false otherwise
// Examples
// palindrome(string: "racecar") == true
// palindrome(string: "Hello") == false
// palindrome(string: "racecar") == true
func palindrome(string: String) -> Bool {
    if string == String(string.reversed()) {
        return true
    }
    return false
}

// Write a function that takes a string and returns true if the string
// is a palindrome or false otherwise
// Examples
// palindrome(string: "racecar") == true
// palindrome(string: "Hello") == false
// palindrome(string: "racecar") == true
func palindrome(string: String) -> Bool {
    if string == String(string.reversed()) {
        return true
    }
    return false
}

// Write a function that takes a string and returns true if the string
// is a palindrome or false otherwise
// Examples
// palindrome(string: "racecar") == true
// palindrome(string: "Hello") == false
// palindrome(string: "racecar") == true
func palindrome(string: String) -> Bool {
    if string == String(string.reversed()) {
        return true
    }
    return false
}

// Write a function that takes a string and returns true if the string
// is a palindrome or false otherwise
// Examples
// palindrome(string: "racecar") == true
// palindrome(string: "Hello") == false
// palindrome(string: "racecar") == true
func palindrome(string: String) -> Bool {
    if string == String(string.reversed()) {
        return true
    }
    return false
}

// Write a function that takes a string and returns true if the string
// is a palindrome or false otherwise
// Examples
// palindrome(string: "racecar") == true
// palindrome(string: "Hello") == false
// palindrome(string: "racecar") == true
func palindrome(string: String) -> Bool {
    if string == String(string.reversed()) {
        return true
    }
    return
 // Fatal error: Range requires lowerBound <= upperBound

func primeLength(string: String) -> Bool {
    if string.count == 1 {
        return false
    }
    for i in 2..<string.count {
        if string[string.index(string.startIndex, offsetBy: i)] == string[string.index(string.startIndex, offsetBy: i - 1)] {
            return false
        }
    }
    return true
}
```swift
// Write a function that takes a string and returns true if the string
// length is a prime number or false otherwise
// Examples
// primeLength(string: "Hello") == true
// primeLength(string: "abcdcba") == true
// primeLength(string: "kittens") == true
// primeLength(string: "orange") == false
func primeLength(string: String) -> Bool {
    if string.count == 1 {
        return false
    }
    for i in 2..<string.count {
        if string[string.index(string.startIndex, offsetBy: i)] == string[string.index(string.startIndex, offsetBy: i - 1)] {
            return false
        }
    }
    return true
}
<|file_separator|>
 // XCTAssertTrue failed

func primeLength(string: String) -> Bool {
    if string.count == 1 {
        return true
    }
    for i in 2..<string.count {
        if string.count % i == 0 {
            return false
        }
    }
    return true
}

func vowel(string: String) -> Bool {
    let vowels = ["a", "e", "i", "o", "u"]
    for i in vowels {
        if string.contains(i) {
            return true
        }
    }
    return false
}

func consonant(string: String) -> Bool {
    let vowels = ["a", "e", "i", "o", "u"]
    for i in string {
        if vowels.contains(String(i)) {
            return false
        }
    }
    return true
}

func digit(string: String) -> Bool {
    for i in string {
        if i.isNumber {
            return true
        }
    }
    return false
}

func special(string: String) -> Bool {
    let specialCharacters = ["!", "@", "#", "$", "%", "^", "&", "*", "(", ")", "-", "_", "=", "+", "[", "]", "{", "}", "|", ";", ":", "'", "\"", ",", ".", "/", "?", "<", ">", "`", "~"]
    for i in string {
        if specialCharacters.contains(String(i)) {
            return true
        }
    }
    return false
}

func letter(string: String) -> Bool {
    for i in string {
        if i.isLetter {
            return true
        }
    }
    return false
}

func number(string: String) -> Bool {
    for i in string {
        if i.isNumber {
            return true
        }
    }
    return false
}
```swift
// Write a function that takes a string and returns true if the string
// length is a prime number or false otherwise
// Examples
// primeLength(string: "Hello") == true
// primeLength(string: "abcdcba") == true
// primeLength(string: "kittens") == true
// primeLength(string: "orange") == false
func primeLength(string: String) -> Bool {
    if string.count == 1 {
        return true
    }
    for i in 2..<string.count {
        if string.count % i == 0 {
            return false
        }
    }
    return true
}

// Write a function that takes a string and returns true if the string
// contains a vowel or false otherwise
// Examples
// vowel(string: "Hello") == true
// vowel(string: "abcdcba") == true
// vowel(string: "kittens") == true
// vowel(string: "orange") == false
func vowel(string: String) -> Bool {
    let vowels = ["a", "e", "i", "o", "u"]
    for i in vowels {
        if string.contains(i) {
            return true
        }
    }
    return false
}

// Write a function that takes a string and returns true if the string
// contains a consonant or false otherwise
// Examples
// consonant(string: "Hello") == true
// consonant(string: "abcdcba") == true
// consonant(string: "kittens") == true
// consonant(string: "orange") == false
func consonant(string: String) -> Bool {
    let vowels = ["a", "e", "i", "o", "u"]
    for i in string {
        if vowels.contains(String(i)) {
            return false
        }
    }
    return true
}

// Write a function that takes a string and returns true if the string
// contains a digit or false otherwise
// Examples
// digit(string: "Hello") == true
// digit(string: "abcdcba") == true
// digit(string: "kittens") == true
// digit(string: "orange") == false
func digit(string: String) -> Bool {
    for i in string {
        if i.isNumber {
            return true
        }
    }
    return false
}

// Write a function that takes a string and returns true if the string
// contains a special character or false otherwise
// Examples
// special(string: "Hello") == true
// special(string: "abcdcba") == true
// special(string: "kittens") == true
// special(string: "orange") == false
func special(string: String) -> Bool {
    let specialCharacters = ["!", "@", "#", "$", "%", "^", "&", "*", "(", ")", "-", "_", "=", "+", "[", "]", "{", "}", "|", ";", ":", "'", "\"", ",", ".", "/", "?", "<", ">", "`", "~"]
    for i in string {
        if specialCharacters.contains(String(i)) {
            return true
        }
    }
    return false
}

// Write a function that takes a string and returns true if the string
// contains a letter or false otherwise
// Examples
// letter(string: "Hello") == true
// letter(string: "abcdcba") == true
// letter(string: "kittens") == true
// letter(string: "orange") == false
func letter(string: String) -> Bool {
    for i in string {
        if i.isLetter {
            return true
        }
    }
    return false
}

// Write a function that takes a string and returns true if the string
// contains a number or false otherwise
// Examples
// number(string: "Hello") == true
// number(string: "abcdcba") == true
// number(string: "kittens") == true
// number(string: "orange") == false
func number(string: String) -> Bool {
    for i in string {
        if i.isNumber {
            return true
        }
    }
    return false
}

// Write a function that takes a string and returns true if the string
// contains a symbol or false otherwise
// Examples
// symbol(string: "Hello") == true
// symbol(string: "abcdcba") == true
// symbol(string: "kittens") == true
// symbol(string: "orange") == false
func symbol(string: String) -> Bool {
    let specialCharacters = ["!", "@", "#", "$", "%", "^", "&", "*", "(", ")", "-", "_", "=", "+", "[", "]", "{", "}", "|", ";", ":", "'", "\"", ",", ".", "/", "?", "<", ">", "`", "~"]
    for i in string {
        if specialCharacters.contains(String(
 // Fatal error: Range requires lowerBound <= upperBound

func primeLength(string: String) -> Bool {
    if string.count == 1 {
        return false
    }
    for i in 2..<string.count {
        if string.count % i == 0 {
            return false
        }
    }
    return true
}
```swift
// Write a function that takes a string and returns true if the string
// length is a prime number or false otherwise
// Examples
// primeLength(string: "Hello") == true
// primeLength(string: "abcdcba") == true
// primeLength(string: "kittens") == true
// primeLength(string: "orange") == false
func primeLength(string: String) -> Bool {
    if string.count == 1 {
        return false
    }
    for i in 2..<string.count {
        if string.count % i == 0 {
            return false
        }
    }
    return true
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func primeLength(string: String) -> Bool {
    let stringArray = Array(string)
    var prime = true
    for i in 0..<stringArray.count {
        for j in 0..<stringArray.count {
            if i != j {
                if stringArray[i] == stringArray[j] {
                    prime = false
                }
            }
        }
    }
    return prime
}
```swift
// Write a function that takes a string and returns true if the string
// length is a prime number or false otherwise
// Examples
// primeLength(string: "Hello") == true
// primeLength(string: "abcdcba") == true
// primeLength(string: "kittens") == true
// primeLength(string: "orange") == false
func primeLength(string: String) -> Bool {
    let stringArray = Array(string)
    var prime = true
    for i in 0..<stringArray.count {
        for j in 0..<stringArray.count {
            if i != j {
                if stringArray[i] == stringArray[j] {
                    prime = false
                }
            }
        }
    }
    return prime
}
<|file_separator|>
 // XCTAssertTrue failed

func primeLength(string: String) -> Bool {
    let stringLength = string.count
    if stringLength == 1 {
        return false
    }
    for i in 2...stringLength {
        if stringLength % i == 0 {
            return false
        }
    }
    return true
}
```swift
// Write a function that takes a string and returns true if the string
// length is a prime number or false otherwise
// Examples
// primeLength(string: "Hello") == true
// primeLength(string: "abcdcba") == true
// primeLength(string: "kittens") == true
// primeLength(string: "orange") == false
func primeLength(string: String) -> Bool {
    let stringLength = string.count
    if stringLength == 1 {
        return false
    }
    for i in 2...stringLength {
        if stringLength % i == 0 {
            return false
        }
    }
    return true
}
<|file_separator|>
 // XCTAssertTrue failed

func primeLength(string: String) -> Bool {
  var prime = true
  for i in 2..<string.count {
    if string.count % i == 0 {
      prime = false
    }
  }
  return prime
}
```swift
// Write a function that takes a string and returns true if the string
// length is a prime number or false otherwise
// Examples
// primeLength(string: "Hello") == true
// primeLength(string: "abcdcba") == true
// primeLength(string: "kittens") == true
// primeLength(string: "orange") == false
func primeLength(string: String) -> Bool {
  var prime = true
  for i in 2..<string.count {
    if string.count % i == 0 {
      prime = false
    }
  }
  return prime
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func primeLength(string: String) -> Bool {
    var prime = true
    for i in 2..<string.count {
        if string.count % i == 0 {
            prime = false
        }
    }
    return prime
}
```swift
// Write a function that takes a string and returns true if the string
// length is a prime number or false otherwise
// Examples
// primeLength(string: "Hello") == true
// primeLength(string: "abcdcba") == true
// primeLength(string: "kittens") == true
// primeLength(string: "orange") == false
func primeLength(string: String) -> Bool {
    var prime = true
    for i in 2..<string.count {
        if string.count % i == 0 {
            prime = false
        }
    }
    return prime
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func startsOneEnds(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i % 10 == 1 {
      count += 1
    }
    if i / 10 == 1 {
      count += 1
    }
  }
  return count
}

func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}
```swift
// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that start or end with 1.
func startsOneEnds(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i % 10 == 1 {
      count += 1
    }
    if i / 10 == 1 {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().
if i.toString().contains("1") { // value of type 'Int' has no member 'toString'

func startsOneEnds(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i % 10 == 1 {
      count += 1
    }
    if i / 10 == 1 {
      count += 1
    }
  }
  return count
}

func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}
```swift
// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that start or end with 1.
func startsOneEnds(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i % 10 == 1 {
      count += 1
    }
    if i / 10 == 1 {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().contains("1") {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i.toString().
if i.toString().contains("1") { // value of type 'Int' has no member 'toString'

func startsOneEnds(n: Int) -> Int {
    var count = 0
    for i in 1...n {
        if i % 10 == 1 {
            count += 1
        }
        if i / 10 == 1 {
            count += 1
        }
    }
    return count
}
```swift
// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that start or end with 1.
func startsOneEnds(n: Int) -> Int {
    var count = 0
    for i in 1...n {
        if i % 10 == 1 {
            count += 1
        }
        if i / 10 == 1 {
            count += 1
        }
    }
    return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have 1 as a digit.
func startsOne(n: Int) -> Int {
    var count = 0
    for i in 1...n {
        if i % 10 == 1 {
            count += 1
        }
        if i / 10 == 1 {
            count += 1
        }
        if i / 100 == 1 {
            count += 1
        }
        if i / 1000 == 1 {
            count += 1
        }
        if i / 10000 == 1 {
            count += 1
        }
        if i / 100000 == 1 {
            count += 1
        }
        if i / 1000000 == 1 {
            count += 1
        }
        if i / 10000000 == 1 {
            count += 1
        }
        if i / 100000000 == 1 {
            count += 1
        }
        if i / 1000000000 == 1 {
            count += 1
        }
        if i / 10000000000 == 1 {
            count += 1
        }
        if i / 100000000000 == 1 {
            count += 1
        }
        if i / 1000000000000 == 1 {
            count += 1
        }
        if i / 10000000000000 == 1 {
            count += 1
        }
        if i / 100000000000000 == 1 {
            count += 1
        }
        if i / 1000000000000000 == 1 {
            count += 1
        }
        if i / 10000000000000000 == 1 {
            count += 1
        }
        if i / 100000000000000000 == 1 {
            count += 1
        }
        if i / 1000000000000000000 == 1 {
            count += 1
        }
        if i / 10000000000000000000 == 1 {
            count += 1
        }
        if i / 100000000000000000000 == 1 {
            count += 1
        }
        if i / 1000000000000000000000 == 1 {
            count += 1
        }
        if i / 10000000000000000000000 == 1 {
            count += 1
        }
        if i / 100000000000000000000000 == 1 {
            count += 1
        }
        if i / 1000000000000000000000000 == 1 {
            count += 1
        }
        if i / 10000000000000000000000000 == 1 {
            count += 1
        }
        if i / 100000000000000000000000000 == 1 {
            count += 1
        }
        if i /
 // XCTAssertTrue failed

func startsOneEnds(n: Int) -> Int {
    var count = 0
    for i in 1...n {
        if i == 1 {
            count += 1
            continue
        }
        if i % 10 == 1 {
            count += 1
        }
        if i % 100 == 1 {
            count += 1
        }
    }
    return count
}
```swift
// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that start or end with 1.
func startsOneEnds(n: Int) -> Int {
    var count = 0
    for i in 1...n {
        if i == 1 {
            count += 1
            continue
        }
        if i % 10 == 1 {
            count += 1
        }
        if i % 100 == 1 {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func startsOneEnds(n: Int) -> Int {
    var count = 0
    for i in 1...n {
        if i == 1 {
            count += 1
        } else if i % 10 == 1 {
            count += 1
        }
    }
    return count
}
```swift
// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that start or end with 1.
func startsOneEnds(n: Int) -> Int {
    var count = 0
    for i in 1...n {
        if i == 1 {
            count += 1
        } else if i % 10 == 1 {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func startsOneEnds(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i == 1 || i == 10 {
      count += 1
    }
    if i % 10 == 1 {
      count += 1
    }
  }
  return count
}
```swift
// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that start or end with 1.
func startsOneEnds(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i == 1 || i == 10 {
      count += 1
    }
    if i % 10 == 1 {
      count += 1
    }
  }
  return count
}
<|file_separator|>
 // XCTAssertTrue failed

func startsOneEnds(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i % 10 == 1 {
      count += 1
    }
    if i == 10 {
      count += 1
    }
  }
  return count
}
```swift
// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that start or end with 1.
func startsOneEnds(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i % 10 == 1 {
      count += 1
    }
    if i == 10 {
      count += 1
    }
  }
  return count
}
<|file_separator|>
 // XCTAssertTrue failed

func startsOneEnds(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if (i % 10 == 1) {
      count += 1
    }
    if (i % 100 == 1) {
      count += 1
    }
    if (i % 1000 == 1) {
      count += 1
    }
    if (i % 10000 == 1) {
      count += 1
    }
    if (i % 100000 == 1) {
      count += 1
    }
    if (i % 1000000 == 1) {
      count += 1
    }
    if (i % 10000000 == 1) {
      count += 1
    }
    if (i % 100000000 == 1) {
      count += 1
    }
    if (i % 1000000000 == 1) {
      count += 1
    }
  }
  return count
}

func hasOneInMiddle(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if (i % 10 == 1) {
      count += 1
    }
    if (i % 100 == 1) {
      count += 1
    }
    if (i % 1000 == 1) {
      count += 1
    }
    if (i % 10000 == 1) {
      count += 1
    }
    if (i % 100000 == 1) {
      count += 1
    }
    if (i % 1000000 == 1) {
      count += 1
    }
    if (i % 10000000 == 1) {
      count += 1
    }
    if (i % 100000000 == 1) {
      count += 1
    }
    if (i % 1000000000 == 1) {
      count += 1
    }
  }
  return count
}
```swift
// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that start or end with 1.
func startsOneEnds(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if (i % 10 == 1) {
      count += 1
    }
    if (i % 100 == 1) {
      count += 1
    }
    if (i % 1000 == 1) {
      count += 1
    }
    if (i % 10000 == 1) {
      count += 1
    }
    if (i % 100000 == 1) {
      count += 1
    }
    if (i % 1000000 == 1) {
      count += 1
    }
    if (i % 10000000 == 1) {
      count += 1
    }
    if (i % 100000000 == 1) {
      count += 1
    }
    if (i % 1000000000 == 1) {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have a 1 in their middle.
func hasOneInMiddle(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if (i % 10 == 1) {
      count += 1
    }
    if (i % 100 == 1) {
      count += 1
    }
    if (i % 1000 == 1) {
      count += 1
    }
    if (i % 10000 == 1) {
      count += 1
    }
    if (i % 100000 == 1) {
      count += 1
    }
    if (i % 1000000 == 1) {
      count += 1
    }
    if (i % 10000000 == 1) {
      count += 1
    }
    if (i % 100000000 == 1) {
      count += 1
    }
    if (i % 1000000000 == 1) {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have a 1 in their middle.
func hasOneInMiddle(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if (i % 10 == 1) {
      count += 1
    }
    if (i % 100 == 1) {
      count += 1
    }
    if (i % 1000 == 1) {
      count += 1
    }
    if (i % 10000 == 1) {
      count += 1
    }
    if (i % 100000 == 1) {
      count += 1
    }
    if (i % 1000000 == 1) {
      count += 1
    }
    if (i % 10000000 == 1) {
      count += 1
    }
    if (i % 100000000 == 1) {
      count += 1
    }
    if (i % 1000000000 == 1) {
      count += 1
    }
  }
  return count
}

// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that have a 1 in their middle.
func hasOneInMiddle(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if (i % 10 == 1) {
      count += 1
    }
    if (i % 100 == 1) {
      count += 1
    }
    if (i % 1000 == 1) {
      
 // XCTAssertTrue failed

func startsOneEnds(n: Int) -> Int {
    var count = 0
    for i in 1...n {
        if (i % 10 == 1) {
            count += 1
        }
        if (i % 100 == 1) {
            count += 1
        }
        if (i % 1000 == 1) {
            count += 1
        }
        if (i % 10000 == 1) {
            count += 1
        }
        if (i % 100000 == 1) {
            count += 1
        }
        if (i % 1000000 == 1) {
            count += 1
        }
        if (i % 10000000 == 1) {
            count += 1
        }
        if (i % 100000000 == 1) {
            count += 1
        }
        if (i % 1000000000 == 1) {
            count += 1
        }
    }
    return count
}
```swift
// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that start or end with 1.
func startsOneEnds(n: Int) -> Int {
    var count = 0
    for i in 1...n {
        if (i % 10 == 1) {
            count += 1
        }
        if (i % 100 == 1) {
            count += 1
        }
        if (i % 1000 == 1) {
            count += 1
        }
        if (i % 10000 == 1) {
            count += 1
        }
        if (i % 100000 == 1) {
            count += 1
        }
        if (i % 1000000 == 1) {
            count += 1
        }
        if (i % 10000000 == 1) {
            count += 1
        }
        if (i % 100000000 == 1) {
            count += 1
        }
        if (i % 1000000000 == 1) {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func startsOneEnds(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i == 1 {
      count += 1
    } else if i % 10 == 1 {
      count += 1
    } else if i % 100 == 1 {
      count += 1
    } else if i % 1000 == 1 {
      count += 1
    } else if i % 10000 == 1 {
      count += 1
    } else if i % 100000 == 1 {
      count += 1
    } else if i % 1000000 == 1 {
      count += 1
    } else if i % 10000000 == 1 {
      count += 1
    } else if i % 100000000 == 1 {
      count += 1
    } else if i % 1000000000 == 1 {
      count += 1
    }
  }
  return count
}
```swift
// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that start or end with 1.
func startsOneEnds(n: Int) -> Int {
  var count = 0
  for i in 1...n {
    if i == 1 {
      count += 1
    } else if i % 10 == 1 {
      count += 1
    } else if i % 100 == 1 {
      count += 1
    } else if i % 1000 == 1 {
      count += 1
    } else if i % 10000 == 1 {
      count += 1
    } else if i % 100000 == 1 {
      count += 1
    } else if i % 1000000 == 1 {
      count += 1
    } else if i % 10000000 == 1 {
      count += 1
    } else if i % 100000000 == 1 {
      count += 1
    } else if i % 1000000000 == 1 {
      count += 1
    }
  }
  return count
}
<|file_separator|>
 // XCTAssertTrue failed

func solve(N: Int) -> String {
    var N = N
    var binary = ""
    while N > 0 {
        binary = String(N % 2) + binary
        N = N / 2
    }
    return binary
}
```swift
// Given a positive integer N, return the total sum of its digits in binary.
// Example
// Variables:
// @N integer
// Constraints: 0 ≤ N ≤ 10000.
// Output:
// a string of binary number
// solve(N: 1000) == "1"
// solve(N: 150) == "110"
// solve(N: 147) == "1100"
func solve(N: Int) -> String {
    var N = N
    var binary = ""
    while N > 0 {
        binary = String(N % 2) + binary
        N = N / 2
    }
    return binary
}
<|file_separator|>
 // XCTAssertTrue failed

func solve(N: Int) -> String {
    var N = N
    var result = ""
    while N > 0 {
        result = String(N % 2) + result
        N /= 2
    }
    return result
}
```swift
// Given a positive integer N, return the total sum of its digits in binary.
// Example
// Variables:
// @N integer
// Constraints: 0 ≤ N ≤ 10000.
// Output:
// a string of binary number
// solve(N: 1000) == "1"
// solve(N: 150) == "110"
// solve(N: 147) == "1100"
func solve(N: Int) -> String {
    var N = N
    var result = ""
    while N > 0 {
        result = String(N % 2) + result
        N /= 2
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func solve(N: Int) -> String {
    var N = N
    var result = ""
    while N > 0 {
        result = String(N % 2) + result
        N = N / 2
    }
    return result
}
```swift
// Given a positive integer N, return the total sum of its digits in binary.
// Example
// Variables:
// @N integer
// Constraints: 0 ≤ N ≤ 10000.
// Output:
// a string of binary number
// solve(N: 1000) == "1"
// solve(N: 150) == "110"
// solve(N: 147) == "1100"
func solve(N: Int) -> String {
    var N = N
    var result = ""
    while N > 0 {
        result = String(N % 2) + result
        N = N / 2
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func solve(N: Int) -> String {
    var N = N
    var sum = 0
    while N > 0 {
        sum += N % 2
        N /= 2
    }
    return String(sum)
}
```swift
// Given a positive integer N, return the total sum of its digits in binary.
// Example
// Variables:
// @N integer
// Constraints: 0 ≤ N ≤ 10000.
// Output:
// a string of binary number
// solve(N: 1000) == "1"
// solve(N: 150) == "110"
// solve(N: 147) == "1100"
func solve(N: Int) -> String {
    var N = N
    var sum = 0
    while N > 0 {
        sum += N % 2
        N /= 2
    }
    return String(sum)
}
<|file_separator|>
 // XCTAssertTrue failed

func solve(N: Int) -> String {
    var N = N
    var result = ""
    while N > 0 {
        result = String(N % 2) + result
        N = N / 2
    }
    return result
}
```swift
// Given a positive integer N, return the total sum of its digits in binary.
// Example
// Variables:
// @N integer
// Constraints: 0 ≤ N ≤ 10000.
// Output:
// a string of binary number
// solve(N: 1000) == "1"
// solve(N: 150) == "110"
// solve(N: 147) == "1100"
func solve(N: Int) -> String {
    var N = N
    var result = ""
    while N > 0 {
        result = String(N % 2) + result
        N = N / 2
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func solve(N: Int) -> String {
    var result = ""
    var n = N
    while n > 0 {
        result = String(n % 2) + result
        n = n / 2
    }
    return result
}
```swift
// Given a positive integer N, return the total sum of its digits in binary.
// Example
// Variables:
// @N integer
// Constraints: 0 ≤ N ≤ 10000.
// Output:
// a string of binary number
// solve(N: 1000) == "1"
// solve(N: 150) == "110"
// solve(N: 147) == "1100"
func solve(N: Int) -> String {
    var result = ""
    var n = N
    while n > 0 {
        result = String(n % 2) + result
        n = n / 2
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func solve(N: Int) -> String {
    var N = N
    var result = ""
    while N > 0 {
        result = String(N % 2) + result
        N /= 2
    }
    return result
}
```swift
// Given a positive integer N, return the total sum of its digits in binary.
// Example
// Variables:
// @N integer
// Constraints: 0 ≤ N ≤ 10000.
// Output:
// a string of binary number
// solve(N: 1000) == "1"
// solve(N: 150) == "110"
// solve(N: 147) == "1100"
func solve(N: Int) -> String {
    var N = N
    var result = ""
    while N > 0 {
        result = String(N % 2) + result
        N /= 2
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func solve(N: Int) -> String {
    // Write your code here
    var result = ""
    var N = N
    while N > 0 {
        result = String(N % 2) + result
        N = N / 2
    }
    return result
}
```swift
// Given a positive integer N, return the total sum of its digits in binary.
// Example
// Variables:
// @N integer
// Constraints: 0 ≤ N ≤ 10000.
// Output:
// a string of binary number
// solve(N: 1000) == "1"
// solve(N: 150) == "110"
// solve(N: 147) == "1100"
func solve(N: Int) -> String {
    // Write your code here
    var result = ""
    var N = N
    while N > 0 {
        result = String(N % 2) + result
        N = N / 2
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func solve(N: Int) -> String {
    // Write your code here
    var N = N
    var result = ""
    while N > 0 {
        result = String(N % 2) + result
        N = N / 2
    }
    return result
}
```swift
// Given a positive integer N, return the total sum of its digits in binary.
// Example
// Variables:
// @N integer
// Constraints: 0 ≤ N ≤ 10000.
// Output:
// a string of binary number
// solve(N: 1000) == "1"
// solve(N: 150) == "110"
// solve(N: 147) == "1100"
func solve(N: Int) -> String {
    // Write your code here
    var N = N
    var result = ""
    while N > 0 {
        result = String(N % 2) + result
        N = N / 2
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func solve(N: Int) -> String {
    // Write your code here
    var N = N
    var result = ""
    while N > 0 {
        result = String(N % 2) + result
        N = N / 2
    }
    return result
}
```swift
// Given a positive integer N, return the total sum of its digits in binary.
// Example
// Variables:
// @N integer
// Constraints: 0 ≤ N ≤ 10000.
// Output:
// a string of binary number
// solve(N: 1000) == "1"
// solve(N: 150) == "110"
// solve(N: 147) == "1100"
func solve(N: Int) -> String {
    // Write your code here
    var N = N
    var result = ""
    while N > 0 {
        result = String(N % 2) + result
        N = N / 2
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 1 {
            sum += lst[i]
        }
    }
    return sum
}

func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}
```swift
// Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 1 {
            sum += lst[i]
        }
    }
    return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    
func add(lst: [Int]) -> Int { // invalid redeclaration of 'add(lst:)'

func add(lst: [Int]) -> Int {
    var sum = 0
    for (index, element) in lst.enumerated() {
        if index % 2 != 0 {
            sum += element
        }
    }
    return sum
}

func add(lst: [Int]) -> Int {
    var sum = 0
    for (index, element) in lst.enumerated() {
        if index % 2 == 0 {
            sum += element
        }
    }
    return sum
}
```swift
// Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for (index, element) in lst.enumerated() {
        if index % 2 != 0 {
            sum += element
        }
    }
    return sum
}

// Given a non-empty array of integers lst. add the odd elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for (index, element) in lst.enumerated() {
        if index % 2 == 0 {
            sum += element
        }
    }
    return sum
}
<|file_separator|>
func add(lst: [Int]) -> Int { // invalid redeclaration of 'add(lst:)'

func add(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 1 {
            sum += value
        }
    }
    return sum
}
```swift
// Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 1 {
            sum += value
        }
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func add(lst: [Int]) -> Int {
  var result = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 1 {
      result += value
    }
  }
  return result
}

func add(lst: [Int]) -> Int {
  var result = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 0 {
      result += value
    }
  }
  return result
}
```swift
// Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
  var result = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 1 {
      result += value
    }
  }
  return result
}

// Given a non-empty array of integers lst. add the odd elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
  var result = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 0 {
      result += value
    }
  }
  return result
}
<|file_separator|>
func add(lst: [Int]) -> Int { // invalid redeclaration of 'add(lst:)'

func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}

func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 != 0 {
            sum += lst[i]
        }
    }
    return sum
}

func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 1 {
            sum += lst[i]
        }
    }
    return sum
}

func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 != 1 {
            sum += lst[i]
        }
    }
    return sum
}
```swift
// Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 != 0 {
            sum += lst[i]
        }
    }
    return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 1 {
            sum += lst[i]
        }
    }
    return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 != 1 {
            sum += lst[i]
        }
    }
    return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 != 0 {
            sum += lst[i]
        }
    }
    return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 1 {
            sum += lst[i]
        }
    }
    return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 != 1 {
            sum += lst[i]
        }
    }
    return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 != 0 {
            sum += lst[i]
        }
    
func add(lst: [Int]) -> Int { // invalid redeclaration of 'add(lst:)'
func add(lst: [Int]) -> Int { // invalid redeclaration of 'add(lst:)'
func add(lst: [Int]) -> Int { // invalid redeclaration of 'add(lst:)'

func add(lst: [Int]) -> Int {
    var result = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 1 {
            result += value
        }
    }
    return result
}
```swift
// Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var result = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 1 {
            result += value
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func add(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 1 {
            sum += value
        }
    }
    return sum
}
```swift
// Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 1 {
            sum += value
        }
    }
    return sum
}

// Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 1 {
            sum += value
        }
    }
    return sum
}

// Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 1 {
            sum += value
        }
    }
    return sum
}

// Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 1 {
            sum += value
        }
    }
    return sum
}

// Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 1 {
            sum += value
        }
    }
    return sum
}

// Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 1 {
            sum += value
        }
    }
    return sum
}

// Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 1 {
            sum += value
        }
    }
    return sum
}

// Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 1 {
            sum += value
        }
    }
    return sum
}

// Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 1 {
            sum += value
        }
    }
    return sum
}

// Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 1 {
            sum += value
        }
    
 // XCTAssertTrue failed

func add(lst: [Int]) -> Int {
  var sum = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 1 {
      sum += value
    }
  }
  return sum
}
```swift
// Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
  var sum = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 1 {
      sum += value
    }
  }
  return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 != 0 {
            sum += lst[i]
        }
    }
    return sum
}

func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}
```swift
// Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 != 0 {
            sum += lst[i]
        }
    }
    return sum
}

// Given a non-empty array of integers lst. add the odd elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}

// Given a non-empty array of integers lst. add the elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 != 0 {
            sum += lst[i]
        }
    }
    return sum
}

// Given a non-empty array of integers lst. add the elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}

// Given a non-empty array of integers lst. add the elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 != 0 {
            sum += lst[i]
        }
    }
    return sum
}

// Given a non-empty array of integers lst. add the elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}

// Given a non-empty array of integers lst. add the elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 != 0 {
            sum += lst[i]
        }
    }
    return sum
}

// Given a non-empty array of integers lst. add the elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}

// Given a non-empty array of integers lst. add the elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 != 0 {
            sum += lst[i]
        }
    }
    return sum
}

// Given a non-empty array of integers lst. add the elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}

func add(lst: [Int]) -> Int { // invalid redeclaration of 'add(lst:)'

func add(lst: [Int]) -> Int {
  var sum = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 1 {
      sum += value
    }
  }
  return sum
}

func add(lst: [Int]) -> Int {
  var sum = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 0 {
      sum += value
    }
  }
  return sum
}
```swift
// Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
  var sum = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 1 {
      sum += value
    }
  }
  return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
  var sum = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 0 {
      sum += value
    }
  }
  return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
  var sum = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 1 {
      sum += value
    }
  }
  return sum
}
// Given a non-empty array of integers lst. add the even elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
  var sum = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 0 {
      sum += value
    }
  }
  return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
  var sum = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 1 {
      sum += value
    }
  }
  return sum
}
// Given a non-empty array of integers lst. add the even elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
  var sum = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 0 {
      sum += value
    }
  }
  return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
  var sum = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 1 {
      sum += value
    }
  }
  return sum
}
// Given a non-empty array of integers lst. add the even elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
  var sum = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 0 {
      sum += value
    }
  }
  return sum
}
// Given a non-empty array of integers lst. add the odd elements that are at odd indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
  var sum = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 1 {
      sum += value
    }
  }
  return sum
}
// Given a non-empty array of integers lst. add the even elements that are at even indices..
// Examples:
// add(lst: [4, 2, 6, 7]) == 2
func add(lst: [Int]) -> Int {
  var sum = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 0 {
      sum += value
    }
  
func add(lst: [Int]) -> Int { // invalid redeclaration of 'add(lst:)'

func antiShuffle(s: String) -> String {
    var result = ""
    var words = s.split(separator: " ")
    for word in words {
        var chars = Array(word)
        chars.sort()
        result += String(chars)
    }
    return result
}
```swift
// Write a function that takes a string and returns an ordered version of it.
// Ordered version of string, is a string where all words (separated by space)
// are replaced by a new word where all the characters arranged in
// ascending order based on ascii value.
// Note: You should keep the order of words and blank spaces in the sentence.
// For example:
// antiShuffle(s: "Hi") == "Hi"
// antiShuffle(s: "hello") == "ehllo"
// antiShuffle(s: "Hello World!!!") == "Hello !!!Wdlor"
func antiShuffle(s: String) -> String {
    var result = ""
    var words = s.split(separator: " ")
    for word in words {
        var chars = Array(word)
        chars.sort()
        result += String(chars)
    }
    return result
}
<|file_separator|>
var words = s.split(separator: " ") // variable 'words' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func antiShuffle(s: String) -> String {
    var result = ""
    var words = s.split(separator: " ")
    for word in words {
        var chars = Array(word)
        chars.sort()
        result += String(chars)
    }
    return result
}
```swift
// Write a function that takes a string and returns an ordered version of it.
// Ordered version of string, is a string where all words (separated by space)
// are replaced by a new word where all the characters arranged in
// ascending order based on ascii value.
// Note: You should keep the order of words and blank spaces in the sentence.
// For example:
// antiShuffle(s: "Hi") == "Hi"
// antiShuffle(s: "hello") == "ehllo"
// antiShuffle(s: "Hello World!!!") == "Hello !!!Wdlor"
func antiShuffle(s: String) -> String {
    var result = ""
    var words = s.split(separator: " ")
    for word in words {
        var chars = Array(word)
        chars.sort()
        result += String(chars)
    }
    return result
}
<|file_separator|>
var words = s.split(separator: " ") // variable 'words' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func antiShuffle(s: String) -> String {
    // Write your code here
    var result = ""
    var words = s.components(separatedBy: " ")
    var word = ""
    for i in 0..<words.count {
        word = ""
        for j in words[i].characters {
            word += String(j)
        }
        word = word.sorted().joined()
        result += word
        if i != words.count - 1 {
            result += " "
        }
    }
    return result
}
```swift
// Write a function that takes a string and returns an ordered version of it.
// Ordered version of string, is a string where all words (separated by space)
// are replaced by a new word where all the characters arranged in
// ascending order based on ascii value.
// Note: You should keep the order of words and blank spaces in the sentence.
// For example:
// antiShuffle(s: "Hi") == "Hi"
// antiShuffle(s: "hello") == "ehllo"
// antiShuffle(s: "Hello World!!!") == "Hello !!!Wdlor"
func antiShuffle(s: String) -> String {
    // Write your code here
    var result = ""
    var words = s.components(separatedBy: " ")
    var word = ""
    for i in 0..<words.count {
        word = ""
        for j in words[i].characters {
            word += String(j)
        }
        word = word.sorted().joined()
        result += word
        if i != words.count - 1 {
            result += " "
        }
    }
    return result
}
<|file_separator|>
for j in words[i].characters { // 'characters' is unavailable: Please use String directly
word = word.sorted().joined() // no exact matches in call to instance method 'joined'

func antiShuffle(s: String) -> String {
    var result = ""
    var words = s.split(separator: " ")
    for word in words {
        var chars = Array(word)
        chars.sort()
        result += String(chars)
    }
    return result
}
```swift
// Write a function that takes a string and returns an ordered version of it.
// Ordered version of string, is a string where all words (separated by space)
// are replaced by a new word where all the characters arranged in
// ascending order based on ascii value.
// Note: You should keep the order of words and blank spaces in the sentence.
// For example:
// antiShuffle(s: "Hi") == "Hi"
// antiShuffle(s: "hello") == "ehllo"
// antiShuffle(s: "Hello World!!!") == "Hello !!!Wdlor"
func antiShuffle(s: String) -> String {
    var result = ""
    var words = s.split(separator: " ")
    for word in words {
        var chars = Array(word)
        chars.sort()
        result += String(chars)
    }
    return result
}
<|file_separator|>
var words = s.split(separator: " ") // variable 'words' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func antiShuffle(s: String) -> String {
    var result = ""
    var words = s.split(separator: " ")
    for word in words {
        var letters = Array(word)
        letters.sort()
        result += String(letters)
    }
    return result
}
```swift
// Write a function that takes a string and returns an ordered version of it.
// Ordered version of string, is a string where all words (separated by space)
// are replaced by a new word where all the characters arranged in
// ascending order based on ascii value.
// Note: You should keep the order of words and blank spaces in the sentence.
// For example:
// antiShuffle(s: "Hi") == "Hi"
// antiShuffle(s: "hello") == "ehllo"
// antiShuffle(s: "Hello World!!!") == "Hello !!!Wdlor"
func antiShuffle(s: String) -> String {
    var result = ""
    var words = s.split(separator: " ")
    for word in words {
        var letters = Array(word)
        letters.sort()
        result += String(letters)
    }
    return result
}
<|file_separator|>
var words = s.split(separator: " ") // variable 'words' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func antiShuffle(s: String) -> String {
    var result = ""
    var words = s.components(separatedBy: " ")
    var wordsOrdered = [String]()
    for word in words {
        var orderedWord = ""
        for char in word {
            orderedWord += String(char).sorted().joined()
        }
        wordsOrdered.append(orderedWord)
    }
    for word in wordsOrdered {
        result += word
    }
    return result
}
```swift
// Write a function that takes a string and returns an ordered version of it.
// Ordered version of string, is a string where all words (separated by space)
// are replaced by a new word where all the characters arranged in
// ascending order based on ascii value.
// Note: You should keep the order of words and blank spaces in the sentence.
// For example:
// antiShuffle(s: "Hi") == "Hi"
// antiShuffle(s: "hello") == "ehllo"
// antiShuffle(s: "Hello World!!!") == "Hello !!!Wdlor"
func antiShuffle(s: String) -> String {
    var result = ""
    var words = s.components(separatedBy: " ")
    var wordsOrdered = [String]()
    for word in words {
        var orderedWord = ""
        for char in word {
            orderedWord += String(char).sorted().joined()
        }
        wordsOrdered.append(orderedWord)
    }
    for word in wordsOrdered {
        result += word
    }
    return result
}
<|file_separator|>
orderedWord += String(char).sorted().joined() // no exact matches in call to instance method 'joined'

func antiShuffle(s: String) -> String {
    var result = ""
    var words = s.split(separator: " ")
    for word in words {
        var chars = Array(word)
        chars.sort()
        result += String(chars)
    }
    return result
}
```swift
// Write a function that takes a string and returns an ordered version of it.
// Ordered version of string, is a string where all words (separated by space)
// are replaced by a new word where all the characters arranged in
// ascending order based on ascii value.
// Note: You should keep the order of words and blank spaces in the sentence.
// For example:
// antiShuffle(s: "Hi") == "Hi"
// antiShuffle(s: "hello") == "ehllo"
// antiShuffle(s: "Hello World!!!") == "Hello !!!Wdlor"
func antiShuffle(s: String) -> String {
    var result = ""
    var words = s.split(separator: " ")
    for word in words {
        var chars = Array(word)
        chars.sort()
        result += String(chars)
    }
    return result
}
<|file_separator|>
var words = s.split(separator: " ") // variable 'words' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func antiShuffle(s: String) -> String {
    var result = ""
    var words = s.split(separator: " ")
    var wordsOrdered = [String]()
    for word in words {
        var orderedWord = ""
        for char in word {
            orderedWord += String(char).sorted().joined()
        }
        wordsOrdered.append(orderedWord)
    }
    for word in wordsOrdered {
        result += word + " "
    }
    return result.trimmingCharacters(in: .whitespaces)
}
```swift
// Write a function that takes a string and returns an ordered version of it.
// Ordered version of string, is a string where all words (separated by space)
// are replaced by a new word where all the characters arranged in
// ascending order based on ascii value.
// Note: You should keep the order of words and blank spaces in the sentence.
// For example:
// antiShuffle(s: "Hi") == "Hi"
// antiShuffle(s: "hello") == "ehllo"
// antiShuffle(s: "Hello World!!!") == "Hello !!!Wdlor"
func antiShuffle(s: String) -> String {
    var result = ""
    var words = s.split(separator: " ")
    var wordsOrdered = [String]()
    for word in words {
        var orderedWord = ""
        for char in word {
            orderedWord += String(char).sorted().joined()
        }
        wordsOrdered.append(orderedWord)
    }
    for word in wordsOrdered {
        result += word + " "
    }
    return result.trimmingCharacters(in: .whitespaces)
}
<|file_separator|>
orderedWord += String(char).sorted().joined() // no exact matches in call to instance method 'joined'

func antiShuffle(s: String) -> String {
    var result = ""
    var words = s.components(separatedBy: " ")
    for word in words {
        var chars = Array(word)
        chars.sort()
        result += String(chars)
    }
    return result
}
```swift
// Write a function that takes a string and returns an ordered version of it.
// Ordered version of string, is a string where all words (separated by space)
// are replaced by a new word where all the characters arranged in
// ascending order based on ascii value.
// Note: You should keep the order of words and blank spaces in the sentence.
// For example:
// antiShuffle(s: "Hi") == "Hi"
// antiShuffle(s: "hello") == "ehllo"
// antiShuffle(s: "Hello World!!!") == "Hello !!!Wdlor"
func antiShuffle(s: String) -> String {
    var result = ""
    var words = s.components(separatedBy: " ")
    for word in words {
        var chars = Array(word)
        chars.sort()
        result += String(chars)
    }
    return result
}
<|file_separator|>
var words = s.components(separatedBy: " ") // variable 'words' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func antiShuffle(s: String) -> String {
    var result = ""
    var words = s.split(separator: " ")
    for word in words {
        var chars = Array(word)
        chars.sort()
        result += String(chars)
    }
    return result
}
```swift
// Write a function that takes a string and returns an ordered version of it.
// Ordered version of string, is a string where all words (separated by space)
// are replaced by a new word where all the characters arranged in
// ascending order based on ascii value.
// Note: You should keep the order of words and blank spaces in the sentence.
// For example:
// antiShuffle(s: "Hi") == "Hi"
// antiShuffle(s: "hello") == "ehllo"
// antiShuffle(s: "Hello World!!!") == "Hello !!!Wdlor"
func antiShuffle(s: String) -> String {
    var result = ""
    var words = s.split(separator: " ")
    for word in words {
        var chars = Array(word)
        chars.sort()
        result += String(chars)
    }
    return result
}
<|file_separator|>
var words = s.split(separator: " ") // variable 'words' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
    var result = [(Int, Int)]()
    for i in 0..<lst.count {
        for j in 0..<lst[i].count {
            if lst[i][j] == x {
                result.append((i, j))
            }
        }
    }
    return result
}
```swift
// You are given a 2 dimensional data, as a nested arrays,
// which is similar to matrix, however, unlike matrices,
// each row may contain a different number of columns.
// Given lst, and integer x, find integers x in the array,
// and return array of tuples, [(x1, y1), (x2, y2) ...] such that
// each tuple is a coordinate - (row, columns), starting with 0.
// Sort coordinates initially by rows in ascending order.
// Also, sort coordinates of the row by columns in descending order.
// Examples:
// getRow(lst: [[1, 2, 3, 4, 5, 6], [1, 2, 3, 4, 1, 6], [1, 2, 3, 4, 5, 1]], x: 1) == [(0, 0), (1, 4), (1, 0), (2, 5), (2, 0)]
// getRow(lst: [] as [[Int]], x: 1) == [] as [(Int, Int)]
// getRow(lst: [[] as [Int], [1], [1, 2, 3]], x: 3) == [(2, 2)]
func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
    var result = [(Int, Int)]()
    for i in 0..<lst.count {
        for j in 0..<lst[i].count {
            if lst[i][j] == x {
                result.append((i, j))
            }
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
    var result = [(Int, Int)]()
    for (i, row) in lst.enumerated() {
        for (j, value) in row.enumerated() {
            if value == x {
                result.append((i, j))
            }
        }
    }
    return result.sorted(by: { $0.0 < $1.0 })
        .sorted(by: { $0.1 > $1.1 })
}
```swift
// You are given a 2 dimensional data, as a nested arrays,
// which is similar to matrix, however, unlike matrices,
// each row may contain a different number of columns.
// Given lst, and integer x, find integers x in the array,
// and return array of tuples, [(x1, y1), (x2, y2) ...] such that
// each tuple is a coordinate - (row, columns), starting with 0.
// Sort coordinates initially by rows in ascending order.
// Also, sort coordinates of the row by columns in descending order.
// Examples:
// getRow(lst: [[1, 2, 3, 4, 5, 6], [1, 2, 3, 4, 1, 6], [1, 2, 3, 4, 5, 1]], x: 1) == [(0, 0), (1, 4), (1, 0), (2, 5), (2, 0)]
// getRow(lst: [] as [[Int]], x: 1) == [] as [(Int, Int)]
// getRow(lst: [[] as [Int], [1], [1, 2, 3]], x: 3) == [(2, 2)]
func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
    var result = [(Int, Int)]()
    for (i, row) in lst.enumerated() {
        for (j, value) in row.enumerated() {
            if value == x {
                result.append((i, j))
            }
        }
    }
    return result.sorted(by: { $0.0 < $1.0 })
        .sorted(by: { $0.1 > $1.1 })
}
<|file_separator|>
 // XCTAssertTrue failed

func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
    var result = [(Int, Int)]()
    for (i, row) in lst.enumerated() {
        for (j, value) in row.enumerated() {
            if value == x {
                result.append((i, j))
            }
        }
    }
    return result.sorted { $0.0 < $1.0 || $0.0 == $1.0 && $0.1 > $1.1 }
}
```swift
// You are given a 2 dimensional data, as a nested arrays,
// which is similar to matrix, however, unlike matrices,
// each row may contain a different number of columns.
// Given lst, and integer x, find integers x in the array,
// and return array of tuples, [(x1, y1), (x2, y2) ...] such that
// each tuple is a coordinate - (row, columns), starting with 0.
// Sort coordinates initially by rows in ascending order.
// Also, sort coordinates of the row by columns in descending order.
// Examples:
// getRow(lst: [[1, 2, 3, 4, 5, 6], [1, 2, 3, 4, 1, 6], [1, 2, 3, 4, 5, 1]], x: 1) == [(0, 0), (1, 4), (1, 0), (2, 5), (2, 0)]
// getRow(lst: [] as [[Int]], x: 1) == [] as [(Int, Int)]
// getRow(lst: [[] as [Int], [1], [1, 2, 3]], x: 3) == [(2, 2)]
func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
    var result = [(Int, Int)]()
    for (i, row) in lst.enumerated() {
        for (j, value) in row.enumerated() {
            if value == x {
                result.append((i, j))
            }
        }
    }
    return result.sorted { $0.0 < $1.0 || $0.0 == $1.0 && $0.1 > $1.1 }
}
<|file_separator|>

func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
    var result = [(Int, Int)]()
    for (row, arr) in lst.enumerated() {
        for (col, value) in arr.enumerated() {
            if value == x {
                result.append((row, col))
            }
        }
    }
    return result
}
```swift
// You are given a 2 dimensional data, as a nested arrays,
// which is similar to matrix, however, unlike matrices,
// each row may contain a different number of columns.
// Given lst, and integer x, find integers x in the array,
// and return array of tuples, [(x1, y1), (x2, y2) ...] such that
// each tuple is a coordinate - (row, columns), starting with 0.
// Sort coordinates initially by rows in ascending order.
// Also, sort coordinates of the row by columns in descending order.
// Examples:
// getRow(lst: [[1, 2, 3, 4, 5, 6], [1, 2, 3, 4, 1, 6], [1, 2, 3, 4, 5, 1]], x: 1) == [(0, 0), (1, 4), (1, 0), (2, 5), (2, 0)]
// getRow(lst: [] as [[Int]], x: 1) == [] as [(Int, Int)]
// getRow(lst: [[] as [Int], [1], [1, 2, 3]], x: 3) == [(2, 2)]
func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
    var result = [(Int, Int)]()
    for (row, arr) in lst.enumerated() {
        for (col, value) in arr.enumerated() {
            if value == x {
                result.append((row, col))
            }
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
    var result = [(Int, Int)]()
    for (i, row) in lst.enumerated() {
        for (j, value) in row.enumerated() {
            if value == x {
                result.append((i, j))
            }
        }
    }
    return result.sorted {
        if $0.0 == $1.0 {
            return $0.1 > $1.1
        }
        return $0.0 < $1.0
    }
}
```swift
// You are given a 2 dimensional data, as a nested arrays,
// which is similar to matrix, however, unlike matrices,
// each row may contain a different number of columns.
// Given lst, and integer x, find integers x in the array,
// and return array of tuples, [(x1, y1), (x2, y2) ...] such that
// each tuple is a coordinate - (row, columns), starting with 0.
// Sort coordinates initially by rows in ascending order.
// Also, sort coordinates of the row by columns in descending order.
// Examples:
// getRow(lst: [[1, 2, 3, 4, 5, 6], [1, 2, 3, 4, 1, 6], [1, 2, 3, 4, 5, 1]], x: 1) == [(0, 0), (1, 4), (1, 0), (2, 5), (2, 0)]
// getRow(lst: [] as [[Int]], x: 1) == [] as [(Int, Int)]
// getRow(lst: [[] as [Int], [1], [1, 2, 3]], x: 3) == [(2, 2)]
func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
    var result = [(Int, Int)]()
    for (i, row) in lst.enumerated() {
        for (j, value) in row.enumerated() {
            if value == x {
                result.append((i, j))
            }
        }
    }
    return result.sorted {
        if $0.0 == $1.0 {
            return $0.1 > $1.1
        }
        return $0.0 < $1.0
    }
}
<|file_separator|>

func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
    var result = [(Int, Int)]()
    for (row, rowValue) in lst.enumerated() {
        for (column, columnValue) in rowValue.enumerated() {
            if columnValue == x {
                result.append((row, column))
            }
        }
    }
    return result.sorted { $0.0 < $1.0 }
}
```swift
// You are given a 2 dimensional data, as a nested arrays,
// which is similar to matrix, however, unlike matrices,
// each row may contain a different number of columns.
// Given lst, and integer x, find integers x in the array,
// and return array of tuples, [(x1, y1), (x2, y2) ...] such that
// each tuple is a coordinate - (row, columns), starting with 0.
// Sort coordinates initially by rows in ascending order.
// Also, sort coordinates of the row by columns in descending order.
// Examples:
// getRow(lst: [[1, 2, 3, 4, 5, 6], [1, 2, 3, 4, 1, 6], [1, 2, 3, 4, 5, 1]], x: 1) == [(0, 0), (1, 4), (1, 0), (2, 5), (2, 0)]
// getRow(lst: [] as [[Int]], x: 1) == [] as [(Int, Int)]
// getRow(lst: [[] as [Int], [1], [1, 2, 3]], x: 3) == [(2, 2)]
func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
    var result = [(Int, Int)]()
    for (row, rowValue) in lst.enumerated() {
        for (column, columnValue) in rowValue.enumerated() {
            if columnValue == x {
                result.append((row, column))
            }
        }
    }
    return result.sorted { $0.0 < $1.0 }
}
<|file_separator|>
 // XCTAssertTrue failed

func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
    var result: [(Int, Int)] = []
    for i in 0..<lst.count {
        for j in 0..<lst[i].count {
            if lst[i][j] == x {
                result.append((i, j))
            }
        }
    }
    return result
}
```swift
// You are given a 2 dimensional data, as a nested arrays,
// which is similar to matrix, however, unlike matrices,
// each row may contain a different number of columns.
// Given lst, and integer x, find integers x in the array,
// and return array of tuples, [(x1, y1), (x2, y2) ...] such that
// each tuple is a coordinate - (row, columns), starting with 0.
// Sort coordinates initially by rows in ascending order.
// Also, sort coordinates of the row by columns in descending order.
// Examples:
// getRow(lst: [[1, 2, 3, 4, 5, 6], [1, 2, 3, 4, 1, 6], [1, 2, 3, 4, 5, 1]], x: 1) == [(0, 0), (1, 4), (1, 0), (2, 5), (2, 0)]
// getRow(lst: [] as [[Int]], x: 1) == [] as [(Int, Int)]
// getRow(lst: [[] as [Int], [1], [1, 2, 3]], x: 3) == [(2, 2)]
func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
    var result: [(Int, Int)] = []
    for i in 0..<lst.count {
        for j in 0..<lst[i].count {
            if lst[i][j] == x {
                result.append((i, j))
            }
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
    var result: [(Int, Int)] = []
    for (row, rowValue) in lst.enumerated() {
        for (column, columnValue) in rowValue.enumerated() {
            if columnValue == x {
                result.append((row, column))
            }
        }
    }
    return result.sorted(by: { $0.0 < $1.0 })
}
```swift
// You are given a 2 dimensional data, as a nested arrays,
// which is similar to matrix, however, unlike matrices,
// each row may contain a different number of columns.
// Given lst, and integer x, find integers x in the array,
// and return array of tuples, [(x1, y1), (x2, y2) ...] such that
// each tuple is a coordinate - (row, columns), starting with 0.
// Sort coordinates initially by rows in ascending order.
// Also, sort coordinates of the row by columns in descending order.
// Examples:
// getRow(lst: [[1, 2, 3, 4, 5, 6], [1, 2, 3, 4, 1, 6], [1, 2, 3, 4, 5, 1]], x: 1) == [(0, 0), (1, 4), (1, 0), (2, 5), (2, 0)]
// getRow(lst: [] as [[Int]], x: 1) == [] as [(Int, Int)]
// getRow(lst: [[] as [Int], [1], [1, 2, 3]], x: 3) == [(2, 2)]
func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
    var result: [(Int, Int)] = []
    for (row, rowValue) in lst.enumerated() {
        for (column, columnValue) in rowValue.enumerated() {
            if columnValue == x {
                result.append((row, column))
            }
        }
    }
    return result.sorted(by: { $0.0 < $1.0 })
}
<|file_separator|>
 // XCTAssertTrue failed

func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
  var result = [(Int, Int)]()
  for (i, row) in lst.enumerated() {
    for (j, value) in row.enumerated() {
      if value == x {
        result.append((i, j))
      }
    }
  }
  return result.sorted { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
}
```swift
// You are given a 2 dimensional data, as a nested arrays,
// which is similar to matrix, however, unlike matrices,
// each row may contain a different number of columns.
// Given lst, and integer x, find integers x in the array,
// and return array of tuples, [(x1, y1), (x2, y2) ...] such that
// each tuple is a coordinate - (row, columns), starting with 0.
// Sort coordinates initially by rows in ascending order.
// Also, sort coordinates of the row by columns in descending order.
// Examples:
// getRow(lst: [[1, 2, 3, 4, 5, 6], [1, 2, 3, 4, 1, 6], [1, 2, 3, 4, 5, 1]], x: 1) == [(0, 0), (1, 4), (1, 0), (2, 5), (2, 0)]
// getRow(lst: [] as [[Int]], x: 1) == [] as [(Int, Int)]
// getRow(lst: [[] as [Int], [1], [1, 2, 3]], x: 3) == [(2, 2)]
func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
  var result = [(Int, Int)]()
  for (i, row) in lst.enumerated() {
    for (j, value) in row.enumerated() {
      if value == x {
        result.append((i, j))
      }
    }
  }
  return result.sorted { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
}
<|file_separator|>

func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
    var result = [(Int, Int)]()
    for i in 0..<lst.count {
        for j in 0..<lst[i].count {
            if lst[i][j] == x {
                result.append((i, j))
            }
        }
    }
    return result.sorted {
        if $0.0 == $1.0 {
            return $0.1 > $1.1
        } else {
            return $0.0 < $1.0
        }
    }
}
```swift
// You are given a 2 dimensional data, as a nested arrays,
// which is similar to matrix, however, unlike matrices,
// each row may contain a different number of columns.
// Given lst, and integer x, find integers x in the array,
// and return array of tuples, [(x1, y1), (x2, y2) ...] such that
// each tuple is a coordinate - (row, columns), starting with 0.
// Sort coordinates initially by rows in ascending order.
// Also, sort coordinates of the row by columns in descending order.
// Examples:
// getRow(lst: [[1, 2, 3, 4, 5, 6], [1, 2, 3, 4, 1, 6], [1, 2, 3, 4, 5, 1]], x: 1) == [(0, 0), (1, 4), (1, 0), (2, 5), (2, 0)]
// getRow(lst: [] as [[Int]], x: 1) == [] as [(Int, Int)]
// getRow(lst: [[] as [Int], [1], [1, 2, 3]], x: 3) == [(2, 2)]
func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
    var result = [(Int, Int)]()
    for i in 0..<lst.count {
        for j in 0..<lst[i].count {
            if lst[i][j] == x {
                result.append((i, j))
            }
        }
    }
    return result.sorted {
        if $0.0 == $1.0 {
            return $0.1 > $1.1
        } else {
            return $0.0 < $1.0
        }
    }
}
<|file_separator|>

```swift
// Given an array of non-negative integers, return a coswift of the given array after sorting,
// you will sort the given array in ascending order if the sum( first index value, last index value) is odd,
// or sort it in descending order if the sum( first index value, last index value) is even.
// Note:
// * don't change the given array.
// Examples:
// sortArray(array: [] as [Int]) == [] as [Int]
// sortArray(array: [5]) == [5]
// sortArray(array: [2, 4, 3, 0, 1, 5]) == [0, 1, 2, 3, 4, 5]
// sortArray(array: [2, 4, 3, 0, 1, 5, 6]) == [6, 5, 4, 3, 2, 1, 0]
func sortArray(array: [Int]) -> [Int] {
    var sortedArray = array
    if array.count == 0 {
        return []
    }
    if array.count == 1 {
        return array
    }
    if array.count == 2 {
        if array[0] > array[1] {
            return [array[1], array[0]]
        }
        return array
    }
    if array.count == 3 {
        if array[0] > array[1] {
            if array[1] > array[2] {
                return [array[2], array[1], array[0]]
            }
            return [array[1], array[0], array[2]]
        }
        if array[1] > array[2] {
            return [array[0], array[2], array[1]]
        }
        return array
    }
    if array.count == 4 {
        if array[0] > array[1] {
            if array[1] > array[2] {
                if array[2] > array[3] {
                    return [array[3], array[2], array[1], array[0]]
                }
                return [array[2], array[1], array[0], array[3]]
            }
            return [array[1], array[0], array[3], array[2]]
        }
        if array[1] > array[2] {
            if array[2] > array[3] {
                return [array[0], array[3], array[2], array[1]]
            }
            return [array[0], array[2], array[1], array[3]]
        }
        if array[2] > array[3] {
            return [array[0], array[1], array[3], array[2]]
        }
        return array
    }
    if array.count == 5 {
        if array[0] > array[1] {
            if array[1] > array[2] {
                if array[2] > array[3] {
                    if array[3] > array[4] {
                        return [array[4], array[3], array[2], array[1], array[0]]
                    }
                    return [array[3], array[2], array[1], array[0], array[4]]
                }
                return [array[2], array[1], array[0], array[4], array[3]]
            }
            return [array[1], array[0], array[4], array[3], array[2]]
        }
        if array[1] > array[2] {
            if array[2] > array[3] {
                if array[3] > array[4] {
                    return [array[4], array[3], array[1], array[0], array[2]]
                }
                return [array[3], array[1], array[0], array[4], array[2]]
            }
            return [array[2], array[0], array[4], array[1], array[3]]
        }
        if array[2] > array[3] {
            if array[3] > array[4] {
                return [array[4], array[3], array[0], array[1], array[2]]
            }
            return [array[3], array[0], array[1], array[2], array[4]]
        }
        if array[3] > array[4] {
            return [array[4], array[0], array[1], array[2], array[3]]
        }
        return array
    }
    if array.count == 6 {
        if array[0] > array[1] {
            if array[1] > array[2] {
                if array[2] > array[3] {
                    if array[3] > array[4] {
                        if array[4] > array[5] {
                            return [array[5], array[4], array[3], array[2], array[1], array[0]]
                        }
                        return [array[4], array[3], array[2], array[1], array[0], array[5]]
                    }
                    return [array[3], array[2], array[1], array[0], array[5], array[4]]
                }
                return [array[2
XCTAssertTrue(sortArray(array: [] as [Int]) == [] as [Int]) // cannot find 'sortArray' in scope
XCTAssertTrue(sortArray(array: [5]) == [5]) // cannot find 'sortArray' in scope
XCTAssertTrue(sortArray(array: [2, 4, 3, 0, 1, 5]) == [0, 1, 2, 3, 4, 5]) // cannot find 'sortArray' in scope
XCTAssertTrue(sortArray(array: [2, 4, 3, 0, 1, 5, 6]) == [6, 5, 4, 3, 2, 1, 0]) // cannot find 'sortArray' in scope
XCTAssertTrue(sortArray(array: [2, 1]) == [1, 2]) // cannot find 'sortArray' in scope
XCTAssertTrue(sortArray(array: [15, 42, 87, 32, 11, 0]) == [0, 11, 15, 32, 42, 87]) // cannot find 'sortArray' in scope
XCTAssertTrue(sortArray(array: [21, 14, 23, 11]) == [23, 21, 14, 11]) // cannot find 'sortArray' in scope

func sortArray(array: [Int]) -> [Int] {
    var sortedArray = array
    sortedArray.sort(by: { $0 < $1 })
    if array.count % 2 == 0 {
        return sortedArray
    } else {
        return sortedArray.reversed()
    }
}
```swift
// Given an array of non-negative integers, return a coswift of the given array after sorting,
// you will sort the given array in ascending order if the sum( first index value, last index value) is odd,
// or sort it in descending order if the sum( first index value, last index value) is even.
// Note:
// * don't change the given array.
// Examples:
// sortArray(array: [] as [Int]) == [] as [Int]
// sortArray(array: [5]) == [5]
// sortArray(array: [2, 4, 3, 0, 1, 5]) == [0, 1, 2, 3, 4, 5]
// sortArray(array: [2, 4, 3, 0, 1, 5, 6]) == [6, 5, 4, 3, 2, 1, 0]
func sortArray(array: [Int]) -> [Int] {
    var sortedArray = array
    sortedArray.sort(by: { $0 < $1 })
    if array.count % 2 == 0 {
        return sortedArray
    } else {
        return sortedArray.reversed()
    }
}
<|file_separator|>
 // XCTAssertTrue failed

func sortArray(array: [Int]) -> [Int] {
    var array = array
    var sum = 0
    var result = [Int]()
    
    for i in 0..<array.count {
        sum += array[i]
    }
    
    if sum % 2 == 0 {
        for i in 0..<array.count {
            for j in 0..<array.count {
                if array[i] + array[j] == sum / 2 {
                    result.append(array[i])
                    result.append(array[j])
                    array.remove(at: i)
                    array.remove(at: j)
                    break
                }
            }
        }
    } else {
        for i in 0..<array.count {
            for j in 0..<array.count {
                if array[i] + array[j] == sum / 2 {
                    result.append(array[i])
                    result.append(array[j])
                    array.remove(at: i)
                    array.remove(at: j)
                    break
                }
            }
        }
        result.sort()
    }
    
    return result
}
```swift
// Given an array of non-negative integers, return a coswift of the given array after sorting,
// you will sort the given array in ascending order if the sum( first index value, last index value) is odd,
// or sort it in descending order if the sum( first index value, last index value) is even.
// Note:
// * don't change the given array.
// Examples:
// sortArray(array: [] as [Int]) == [] as [Int]
// sortArray(array: [5]) == [5]
// sortArray(array: [2, 4, 3, 0, 1, 5]) == [0, 1, 2, 3, 4, 5]
// sortArray(array: [2, 4, 3, 0, 1, 5, 6]) == [6, 5, 4, 3, 2, 1, 0]
func sortArray(array: [Int]) -> [Int] {
    var array = array
    var sum = 0
    var result = [Int]()
    
    for i in 0..<array.count {
        sum += array[i]
    }
    
    if sum % 2 == 0 {
        for i in 0..<array.count {
            for j in 0..<array.count {
                if array[i] + array[j] == sum / 2 {
                    result.append(array[i])
                    result.append(array[j])
                    array.remove(at: i)
                    array.remove(at: j)
                    break
                }
            }
        }
    } else {
        for i in 0..<array.count {
            for j in 0..<array.count {
                if array[i] + array[j] == sum / 2 {
                    result.append(array[i])
                    result.append(array[j])
                    array.remove(at: i)
                    array.remove(at: j)
                    break
                }
            }
        }
        result.sort()
    }
    
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func sortArray(array: [Int]) -> [Int] {
    var array = array
    var sum = 0
    var temp = 0
    for i in 0..<array.count {
        for j in 0..<array.count {
            if array[i] + array[j] == 0 {
                sum = array[i] + array[j]
                if sum % 2 == 0 {
                    temp = array[i]
                    array[i] = array[j]
                    array[j] = temp
                }
            }
        }
    }
    return array
}
```swift
// Given an array of non-negative integers, return a coswift of the given array after sorting,
// you will sort the given array in ascending order if the sum( first index value, last index value) is odd,
// or sort it in descending order if the sum( first index value, last index value) is even.
// Note:
// * don't change the given array.
// Examples:
// sortArray(array: [] as [Int]) == [] as [Int]
// sortArray(array: [5]) == [5]
// sortArray(array: [2, 4, 3, 0, 1, 5]) == [0, 1, 2, 3, 4, 5]
// sortArray(array: [2, 4, 3, 0, 1, 5, 6]) == [6, 5, 4, 3, 2, 1, 0]
func sortArray(array: [Int]) -> [Int] {
    var array = array
    var sum = 0
    var temp = 0
    for i in 0..<array.count {
        for j in 0..<array.count {
            if array[i] + array[j] == 0 {
                sum = array[i] + array[j]
                if sum % 2 == 0 {
                    temp = array[i]
                    array[i] = array[j]
                    array[j] = temp
                }
            }
        }
    }
    return array
}
<|file_separator|>
 // XCTAssertTrue failed

```swift
// Given an array of non-negative integers, return a coswift of the given array after sorting,
// you will sort the given array in ascending order if the sum( first index value, last index value) is odd,
// or sort it in descending order if the sum( first index value, last index value) is even.
// Note:
// * don't change the given array.
// Examples:
// sortArray(array: [] as [Int]) == [] as [Int]
// sortArray(array: [5]) == [5]
// sortArray(array: [2, 4, 3, 0, 1, 5]) == [0, 1, 2, 3, 4, 5]
// sortArray(array: [2, 4, 3, 0, 1, 5, 6]) == [6, 5, 4, 3, 2, 1, 0]
func sortArray(array: [Int]) -> [Int] {
    var array = array
    var sum = 0
    var i = 0
    var j = 0
    var k = 0
    var temp = 0
    var temp2 = 0
    var temp3 = 0
    var temp4 = 0
    var temp5 = 0
    var temp6 = 0
    var temp7 = 0
    var temp8 = 0
    var temp9 = 0
    var temp10 = 0
    var temp11 = 0
    var temp12 = 0
    var temp13 = 0
    var temp14 = 0
    var temp15 = 0
    var temp16 = 0
    var temp17 = 0
    var temp18 = 0
    var temp19 = 0
    var temp20 = 0
    var temp21 = 0
    var temp22 = 0
    var temp23 = 0
    var temp24 = 0
    var temp25 = 0
    var temp26 = 0
    var temp27 = 0
    var temp28 = 0
    var temp29 = 0
    var temp30 = 0
    var temp31 = 0
    var temp32 = 0
    var temp33 = 0
    var temp34 = 0
    var temp35 = 0
    var temp36 = 0
    var temp37 = 0
    var temp38 = 0
    var temp39 = 0
    var temp40 = 0
    var temp41 = 0
    var temp42 = 0
    var temp43 = 0
    var temp44 = 0
    var temp45 = 0
    var temp46 = 0
    var temp47 = 0
    var temp48 = 0
    var temp49 = 0
    var temp50 = 0
    var temp51 = 0
    var temp52 = 0
    var temp53 = 0
    var temp54 = 0
    var temp55 = 0
    var temp56 = 0
    var temp57 = 0
    var temp58 = 0
    var temp59 = 0
    var temp60 = 0
    var temp61 = 0
    var temp62 = 0
    var temp63 = 0
    var temp64 = 0
    var temp65 = 0
    var temp66 = 0
    var temp67 = 0
    var temp68 = 0
    var temp69 = 0
    var temp70 = 0
    var temp71 = 0
    var temp72 = 0
    var temp73 = 0
    var temp74 = 0
    var temp75 = 0
    var temp76 = 0
    var temp77 = 0
    var temp78 = 0
    var temp79 = 0
    var temp80 = 0
    var temp81 = 0
    var temp82 = 0
    var temp83 = 0
    var temp84 = 0
    var temp85 = 0
    var temp86 = 0
    var temp87 = 0
    var temp88 = 0
    var temp89 = 0
    var temp90 = 0
    var temp91 = 0
    var temp92 = 0
    var temp93 = 0
    var temp94 = 0
    var temp95 = 0
    var temp96 = 0
    var temp97 = 0
    var temp98 = 0
    var temp99 = 0
    var temp100 = 0
    var temp101 = 0
    var temp102 = 0
    var temp103 = 0
    var temp104 = 0
    var temp105 = 0
    var temp106 = 0
    var temp107 = 0
    var temp108 = 0
    var temp109 = 0
    var temp110 = 
XCTAssertTrue(sortArray(array: [] as [Int]) == [] as [Int]) // cannot find 'sortArray' in scope
XCTAssertTrue(sortArray(array: [5]) == [5]) // cannot find 'sortArray' in scope
XCTAssertTrue(sortArray(array: [2, 4, 3, 0, 1, 5]) == [0, 1, 2, 3, 4, 5]) // cannot find 'sortArray' in scope
XCTAssertTrue(sortArray(array: [2, 4, 3, 0, 1, 5, 6]) == [6, 5, 4, 3, 2, 1, 0]) // cannot find 'sortArray' in scope
XCTAssertTrue(sortArray(array: [2, 1]) == [1, 2]) // cannot find 'sortArray' in scope
XCTAssertTrue(sortArray(array: [15, 42, 87, 32, 11, 0]) == [0, 11, 15, 32, 42, 87]) // cannot find 'sortArray' in scope
XCTAssertTrue(sortArray(array: [21, 14, 23, 11]) == [23, 21, 14, 11]) // cannot find 'sortArray' in scope

func sortArray(array: [Int]) -> [Int] {
    var array = array
    var sortedArray = [Int]()
    var sum = 0
    var index = 0
    
    while index < array.count {
        sum = array[index] + array[array.count - 1 - index]
        if sum % 2 == 0 {
            sortedArray.append(array[index])
            sortedArray.append(array[array.count - 1 - index])
        } else {
            sortedArray.append(array[array.count - 1 - index])
            sortedArray.append(array[index])
        }
        index += 1
    }
    return sortedArray
}
```swift
// Given an array of non-negative integers, return a coswift of the given array after sorting,
// you will sort the given array in ascending order if the sum( first index value, last index value) is odd,
// or sort it in descending order if the sum( first index value, last index value) is even.
// Note:
// * don't change the given array.
// Examples:
// sortArray(array: [] as [Int]) == [] as [Int]
// sortArray(array: [5]) == [5]
// sortArray(array: [2, 4, 3, 0, 1, 5]) == [0, 1, 2, 3, 4, 5]
// sortArray(array: [2, 4, 3, 0, 1, 5, 6]) == [6, 5, 4, 3, 2, 1, 0]
func sortArray(array: [Int]) -> [Int] {
    var array = array
    var sortedArray = [Int]()
    var sum = 0
    var index = 0
    
    while index < array.count {
        sum = array[index] + array[array.count - 1 - index]
        if sum % 2 == 0 {
            sortedArray.append(array[index])
            sortedArray.append(array[array.count - 1 - index])
        } else {
            sortedArray.append(array[array.count - 1 - index])
            sortedArray.append(array[index])
        }
        index += 1
    }
    return sortedArray
}
<|file_separator|>
var array = array // variable 'array' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func sortArray(array: [Int]) -> [Int] {
    if array.count == 0 {
        return []
    }
    
    var sortedArray = array
    
    if sortedArray.count % 2 == 0 {
        sortedArray.sort { $0 > $1 }
    } else {
        sortedArray.sort { $0 < $1 }
    }
    
    return sortedArray
}
```swift
// Given an array of non-negative integers, return a coswift of the given array after sorting,
// you will sort the given array in ascending order if the sum( first index value, last index value) is odd,
// or sort it in descending order if the sum( first index value, last index value) is even.
// Note:
// * don't change the given array.
// Examples:
// sortArray(array: [] as [Int]) == [] as [Int]
// sortArray(array: [5]) == [5]
// sortArray(array: [2, 4, 3, 0, 1, 5]) == [0, 1, 2, 3, 4, 5]
// sortArray(array: [2, 4, 3, 0, 1, 5, 6]) == [6, 5, 4, 3, 2, 1, 0]
func sortArray(array: [Int]) -> [Int] {
    if array.count == 0 {
        return []
    }
    
    var sortedArray = array
    
    if sortedArray.count % 2 == 0 {
        sortedArray.sort { $0 > $1 }
    } else {
        sortedArray.sort { $0 < $1 }
    }
    
    return sortedArray
}
<|file_separator|>
 // XCTAssertTrue failed

func sortArray(array: [Int]) -> [Int] {
    var array = array
    var sum = 0
    var odd = 0
    var even = 0
    var oddArray = [Int]()
    var evenArray = [Int]()
    for i in 0..<array.count {
        sum += array[i]
    }
    if sum % 2 == 0 {
        for i in 0..<array.count {
            if array[i] % 2 == 0 {
                evenArray.append(array[i])
            } else {
                oddArray.append(array[i])
            }
        }
        if evenArray.count > oddArray.count {
            for i in 0..<evenArray.count {
                if evenArray[i] > oddArray[i] {
                    let temp = evenArray[i]
                    evenArray[i] = oddArray[i]
                    oddArray[i] = temp
                }
            }
        } else {
            for i in 0..<oddArray.count {
                if oddArray[i] > evenArray[i] {
                    let temp = oddArray[i]
                    oddArray[i] = evenArray[i]
                    evenArray[i] = temp
                }
            }
        }
        for i in 0..<evenArray.count {
            array[i] = evenArray[i]
        }
        for i in 0..<oddArray.count {
            array[i + evenArray.count] = oddArray[i]
        }
    } else {
        for i in 0..<array.count {
            if array[i] % 2 == 0 {
                evenArray.append(array[i])
            } else {
                oddArray.append(array[i])
            }
        }
        if evenArray.count > oddArray.count {
            for i in 0..<evenArray.count {
                if evenArray[i] > oddArray[i] {
                    let temp = evenArray[i]
                    evenArray[i] = oddArray[i]
                    oddArray[i] = temp
                }
            }
        } else {
            for i in 0..<oddArray.count {
                if oddArray[i] > evenArray[i] {
                    let temp = oddArray[i]
                    oddArray[i] = evenArray[i]
                    evenArray[i] = temp
                }
            }
        }
        for i in 0..<evenArray.count {
            array[i] = evenArray[i]
        }
        for i in 0..<oddArray.count {
            array[i + evenArray.count] = oddArray[i]
        }
    }
    return array
}
```swift
// Given an array of non-negative integers, return a coswift of the given array after sorting,
// you will sort the given array in ascending order if the sum( first index value, last index value) is odd,
// or sort it in descending order if the sum( first index value, last index value) is even.
// Note:
// * don't change the given array.
// Examples:
// sortArray(array: [] as [Int]) == [] as [Int]
// sortArray(array: [5]) == [5]
// sortArray(array: [2, 4, 3, 0, 1, 5]) == [0, 1, 2, 3, 4, 5]
// sortArray(array: [2, 4, 3, 0, 1, 5, 6]) == [6, 5, 4, 3, 2, 1, 0]
func sortArray(array: [Int]) -> [Int] {
    var array = array
    var sum = 0
    var odd = 0
    var even = 0
    var oddArray = [Int]()
    var evenArray = [Int]()
    for i in 0..<array.count {
        sum += array[i]
    }
    if sum % 2 == 0 {
        for i in 0..<array.count {
            if array[i] % 2 == 0 {
                evenArray.append(array[i])
            } else {
                oddArray.append(array[i])
            }
        }
        if evenArray.count > oddArray.count {
            for i in 0..<evenArray.count {
                if evenArray[i] > oddArray[i] {
                    let temp = evenArray[i]
                    evenArray[i] = oddArray[i]
                    oddArray[i] = temp
                }
            }
        } else {
            for i in 0..<oddArray.count {
                if oddArray[i] > evenArray[i] {
                    let temp = oddArray[i]
                    oddArray[i] = evenArray[i]
                    evenArray[i] = temp
                }
            }
        }
        for i in 0..<evenArray.count {
            array[i] = evenArray[i]
        }
        for i in 0..<oddArray.count {
            array[i + evenArray.count] = oddArray[i]
        }
    } else {
        for i in 0..<array.count {
            if array[i] % 2 == 0 {
                evenArray.append(array[i])
            } else {
                oddArray.append(array[i])
            }
        }
        if evenArray.count > oddArray.count {
            for i in 0..<evenArray.count {
                if evenArray[i] > oddArray[i] {
                    let temp = evenArray[i]
                    evenArray[i] = oddArray[i]
                    oddArray[i] = temp
                }
            }
        } else {
            for i in 0..<oddArray.count {
                if oddArray[i] > evenArray[i] {
                    let temp = oddArray[i]
                    oddArray[i] = evenArray[i]
                    evenArray[i] = temp
                }
            }
        }
        for i in 0..<evenArray.count {
            array[i] = evenArray[i]
        }
        for i in 0..<oddArray.count {
            array[i + evenArray.count] = oddArray[i]
        }
    }
    return array
}
<|file_separator|>
var odd = 0 // initialization of variable 'odd' was never used; consider replacing with assignment to '_' or removing it
var even = 0 // initialization of variable 'even' was never used; consider replacing with assignment to '_' or removing it
 // Fatal error: Index out of range

func sortArray(array: [Int]) -> [Int] {
    var array = array
    var sum = 0
    for i in 0..<array.count {
        for j in 0..<array.count {
            if array[i] + array[j] % 2 == 0 {
                sum = array[i] + array[j]
                if sum % 2 == 0 {
                    array.sort(by: { $0 < $1 })
                } else {
                    array.sort(by: { $0 > $1 })
                }
            }
        }
    }
    return array
}
```swift
// Given an array of non-negative integers, return a coswift of the given array after sorting,
// you will sort the given array in ascending order if the sum( first index value, last index value) is odd,
// or sort it in descending order if the sum( first index value, last index value) is even.
// Note:
// * don't change the given array.
// Examples:
// sortArray(array: [] as [Int]) == [] as [Int]
// sortArray(array: [5]) == [5]
// sortArray(array: [2, 4, 3, 0, 1, 5]) == [0, 1, 2, 3, 4, 5]
// sortArray(array: [2, 4, 3, 0, 1, 5, 6]) == [6, 5, 4, 3, 2, 1, 0]
func sortArray(array: [Int]) -> [Int] {
    var array = array
    var sum = 0
    for i in 0..<array.count {
        for j in 0..<array.count {
            if array[i] + array[j] % 2 == 0 {
                sum = array[i] + array[j]
                if sum % 2 == 0 {
                    array.sort(by: { $0 < $1 })
                } else {
                    array.sort(by: { $0 > $1 })
                }
            }
        }
    }
    return array
}
<|file_separator|>
 // XCTAssertTrue failed

func sortArray(array: [Int]) -> [Int] {
    if array.count == 0 {
        return []
    }
    
    var result = array
    
    if array.count % 2 == 0 {
        result.sort {
            $0 + $1 == $1 + $0
        }
    } else {
        result.sort {
            $0 + $1 == $1 + $0
        }
    }
    
    return result
}
```swift
// Given an array of non-negative integers, return a coswift of the given array after sorting,
// you will sort the given array in ascending order if the sum( first index value, last index value) is odd,
// or sort it in descending order if the sum( first index value, last index value) is even.
// Note:
// * don't change the given array.
// Examples:
// sortArray(array: [] as [Int]) == [] as [Int]
// sortArray(array: [5]) == [5]
// sortArray(array: [2, 4, 3, 0, 1, 5]) == [0, 1, 2, 3, 4, 5]
// sortArray(array: [2, 4, 3, 0, 1, 5, 6]) == [6, 5, 4, 3, 2, 1, 0]
func sortArray(array: [Int]) -> [Int] {
    if array.count == 0 {
        return []
    }
    
    var result = array
    
    if array.count % 2 == 0 {
        result.sort {
            $0 + $1 == $1 + $0
        }
    } else {
        result.sort {
            $0 + $1 == $1 + $0
        }
    }
    
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func encrypt(s: String) -> String {
    var result = ""
    for char in s {
        if char == " " {
            result += " "
        } else {
            let ascii = Int(char.asciiValue!)
            let newAscii = ascii + 2
            let newChar = String(Character(UnicodeScalar(newAscii)!))
            result += newChar
        }
    }
    return result
}
```swift
// Create a function encrypt that takes a string as an argument and
// returns a string encrypted with the alphabet being rotated. 
// The alphabet should be rotated in a manner such that the letters 
// shift down by two multiplied to two places.
// For example:
// encrypt(s: "hi") == "lm"
// encrypt(s: "asdfghjkl") == "ewhjklnop"
// encrypt(s: "gf") == "kj"
// encrypt(s: "et") == "ix"
func encrypt(s: String) -> String {
    var result = ""
    for char in s {
        if char == " " {
            result += " "
        } else {
            let ascii = Int(char.asciiValue!)
            let newAscii = ascii + 2
            let newChar = String(Character(UnicodeScalar(newAscii)!))
            result += newChar
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func encrypt(s: String) -> String {
    var result = ""
    for char in s {
        let charCode = char.asciiValue!
        if charCode >= 97 && charCode <= 122 {
            let newCharCode = charCode + 2
            if newCharCode > 122 {
                result += String(UnicodeScalar(96 + (newCharCode - 122)))
            } else {
                result += String(UnicodeScalar(96 + (newCharCode - 96)))
            }
        } else {
            result += String(char)
        }
    }
    return result
}
```swift
// Create a function encrypt that takes a string as an argument and
// returns a string encrypted with the alphabet being rotated. 
// The alphabet should be rotated in a manner such that the letters 
// shift down by two multiplied to two places.
// For example:
// encrypt(s: "hi") == "lm"
// encrypt(s: "asdfghjkl") == "ewhjklnop"
// encrypt(s: "gf") == "kj"
// encrypt(s: "et") == "ix"
func encrypt(s: String) -> String {
    var result = ""
    for char in s {
        let charCode = char.asciiValue!
        if charCode >= 97 && charCode <= 122 {
            let newCharCode = charCode + 2
            if newCharCode > 122 {
                result += String(UnicodeScalar(96 + (newCharCode - 122)))
            } else {
                result += String(UnicodeScalar(96 + (newCharCode - 96)))
            }
        } else {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func encrypt(s: String) -> String {
    var result = ""
    for char in s {
        let ascii = Int(char.asciiValue!)
        if ascii >= 97 && ascii <= 122 {
            let newAscii = ascii + 2
            if newAscii > 122 {
                result += String(UnicodeScalar(96 + (newAscii - 122)))
            } else {
                result += String(UnicodeScalar(96 + newAscii))
            }
        } else {
            result += String(char)
        }
    }
    return result
}

func decrypt(s: String) -> String {
    var result = ""
    for char in s {
        let ascii = Int(char.asciiValue!)
        if ascii >= 97 && ascii <= 122 {
            let newAscii = ascii - 2
            if newAscii < 97 {
                result += String(UnicodeScalar(122 - (96 - newAscii)))
            } else {
                result += String(UnicodeScalar(96 + newAscii))
            }
        } else {
            result += String(char)
        }
    }
    return result
}

func rotate(s: String) -> String {
    var result = ""
    for char in s {
        let ascii = Int(char.asciiValue!)
        if ascii >= 97 && ascii <= 122 {
            let newAscii = ascii + 2
            if newAscii > 122 {
                result += String(UnicodeScalar(96 + (newAscii - 122)))
            } else {
                result += String(UnicodeScalar(96 + newAscii))
            }
        } else {
            result += String(char)
        }
    }
    return result
}

func unrotate(s: String) -> String {
    var result = ""
    for char in s {
        let ascii = Int(char.asciiValue!)
        if ascii >= 97 && ascii <= 122 {
            let newAscii = ascii - 2
            if newAscii < 97 {
                result += String(UnicodeScalar(122 - (96 - newAscii)))
            } else {
                result += String(UnicodeScalar(96 + newAscii))
            }
        } else {
            result += String(char)
        }
    }
    return result
}
```swift
// Create a function encrypt that takes a string as an argument and
// returns a string encrypted with the alphabet being rotated. 
// The alphabet should be rotated in a manner such that the letters 
// shift down by two multiplied to two places.
// For example:
// encrypt(s: "hi") == "lm"
// encrypt(s: "asdfghjkl") == "ewhjklnop"
// encrypt(s: "gf") == "kj"
// encrypt(s: "et") == "ix"
func encrypt(s: String) -> String {
    var result = ""
    for char in s {
        let ascii = Int(char.asciiValue!)
        if ascii >= 97 && ascii <= 122 {
            let newAscii = ascii + 2
            if newAscii > 122 {
                result += String(UnicodeScalar(96 + (newAscii - 122)))
            } else {
                result += String(UnicodeScalar(96 + newAscii))
            }
        } else {
            result += String(char)
        }
    }
    return result
}

// Create a function decrypt that takes a string as an argument and
// returns a string decrypted with the alphabet being rotated. 
// The alphabet should be rotated in a manner such that the letters 
// shift up by two multiplied to two places.
// For example:
// decrypt(s: "lm") == "hi"
// decrypt(s: "ewhjklnop") == "asdfghjkl"
// decrypt(s: "kj") == "gf"
// decrypt(s: "ix") == "et"
func decrypt(s: String) -> String {
    var result = ""
    for char in s {
        let ascii = Int(char.asciiValue!)
        if ascii >= 97 && ascii <= 122 {
            let newAscii = ascii - 2
            if newAscii < 97 {
                result += String(UnicodeScalar(122 - (96 - newAscii)))
            } else {
                result += String(UnicodeScalar(96 + newAscii))
            }
        } else {
            result += String(char)
        }
    }
    return result
}

// Create a function that takes a string as an argument and returns
// a string with the letters in the alphabet rotated by 2.
// For example:
// rotate(s: "hi") == "jk"
// rotate(s: "asdfghjkl") == "klmnopqrstuvwxyz"
// rotate(s: "gf") == "hj"
// rotate(s: "et") == "ix"
func rotate(s: String) -> String {
    var result = ""
    for char in s {
        let ascii = Int(char.asciiValue!)
        if ascii >= 97 && ascii <= 122 {
            let newAscii = ascii + 2
            if newAscii > 122 {
                result += String(UnicodeScalar(96 + (newAscii - 122)))
            } else {
                result += String(UnicodeScalar(96 + newAscii))
            }
        } else {
            result += String(char)
        }
    }
    return result
}

// Create a function that takes a string as an argument and returns
// a string with the letters in the alphabet rotated by 2.
// For example:
// unrotate(s: "jk") == "hi"
// unrotate(s: "klmnopqrstuvwxyz") == "asdfghjkl"
// unrotate(s: "hj") == "gf"
// unrotate(s: "ix") == "et"
func unrotate(s: String) -> String {
    var result = ""
    for char in s {
        let ascii = Int(char.asciiValue!)
        if ascii >= 97 && ascii <= 122 {
            let newAscii = ascii - 2
            if newAscii < 97 {
                result += String(UnicodeScalar(122 - (96 - newAscii)))
            } else {
                result += String(UnicodeScalar(96 + newAscii))
            }
        } else {
            result += String(char)
        }
    }
    return result
}

// Create a function that takes a string as an argument and returns
// a string with the letters in the alphabet rotated by 2.
// For example:
// unrotate(s: "jk") == "hi"
// unrotate(s: "klmnopqrstuvwxyz") == "asdfghjkl"
// unrotate(s: "hj") == "gf"
// unrotate(s: "ix") == "et"
func unrotate(s: String) -> String {
    var result = ""
    for char in s {
        let ascii = Int(char.asciiValue!)
        if ascii >= 97 && ascii <= 122 {
            let newAscii = ascii - 2
            if newAscii < 97 {
                result
result += String(UnicodeScalar(96 + (newAscii - 122))) // value of optional type 'UnicodeScalar?' (aka 'Optional<Unicode.Scalar>') must be unwrapped to a value of type 'UnicodeScalar' (aka 'Unicode.Scalar')
result += String(UnicodeScalar(96 + newAscii)) // value of optional type 'UnicodeScalar?' (aka 'Optional<Unicode.Scalar>') must be unwrapped to a value of type 'UnicodeScalar' (aka 'Unicode.Scalar')
result += String(UnicodeScalar(122 - (96 - newAscii))) // value of optional type 'UnicodeScalar?' (aka 'Optional<Unicode.Scalar>') must be unwrapped to a value of type 'UnicodeScalar' (aka 'Unicode.Scalar')
result += String(UnicodeScalar(96 + newAscii)) // value of optional type 'UnicodeScalar?' (aka 'Optional<Unicode.Scalar>') must be unwrapped to a value of type 'UnicodeScalar' (aka 'Unicode.Scalar')
result += String(UnicodeScalar(96 + (newAscii - 122))) // value of optional type 'UnicodeScalar?' (aka 'Optional<Unicode.Scalar>') must be unwrapped to a value of type 'UnicodeScalar' (aka 'Unicode.Scalar')
result += String(UnicodeScalar(96 + newAscii)) // value of optional type 'UnicodeScalar?' (aka 'Optional<Unicode.Scalar>') must be unwrapped to a value of type 'UnicodeScalar' (aka 'Unicode.Scalar')
result += String(UnicodeScalar(122 - (96 - newAscii))) // value of optional type 'UnicodeScalar?' (aka 'Optional<Unicode.Scalar>') must be unwrapped to a value of type 'UnicodeScalar' (aka 'Unicode.Scalar')
result += String(UnicodeScalar(96 + newAscii)) // value of optional type 'UnicodeScalar?' (aka 'Optional<Unicode.Scalar>') must be unwrapped to a value of type 'UnicodeScalar' (aka 'Unicode.Scalar')

```swift
// Create a function encrypt that takes a string as an argument and
// returns a string encrypted with the alphabet being rotated. 
// The alphabet should be rotated in a manner such that the letters 
// shift down by two multiplied to two places.
// For example:
// encrypt(s: "hi") == "lm"
// encrypt(s: "asdfghjkl") == "ewhjklnop"
// encrypt(s: "gf") == "kj"
// encrypt(s: "et") == "ix"
func encrypt(s: String) -> String {
    var result = ""
    for char in s {
        let charCode = char.asciiValue!
        let charCodeInt = Int(charCode)
        let charCodeInt2 = charCodeInt + 2
        let charCodeInt3 = charCodeInt2 * 2
        let charCodeInt4 = charCodeInt3 - 2
        let charCodeInt5 = charCodeInt4 + 2
        let charCodeInt6 = charCodeInt5 - 2
        let charCodeInt7 = charCodeInt6 + 2
        let charCodeInt8 = charCodeInt7 - 2
        let charCodeInt9 = charCodeInt8 + 2
        let charCodeInt10 = charCodeInt9 - 2
        let charCodeInt11 = charCodeInt10 + 2
        let charCodeInt12 = charCodeInt11 - 2
        let charCodeInt13 = charCodeInt12 + 2
        let charCodeInt14 = charCodeInt13 - 2
        let charCodeInt15 = charCodeInt14 + 2
        let charCodeInt16 = charCodeInt15 - 2
        let charCodeInt17 = charCodeInt16 + 2
        let charCodeInt18 = charCodeInt17 - 2
        let charCodeInt19 = charCodeInt18 + 2
        let charCodeInt20 = charCodeInt19 - 2
        let charCodeInt21 = charCodeInt20 + 2
        let charCodeInt22 = charCodeInt21 - 2
        let charCodeInt23 = charCodeInt22 + 2
        let charCodeInt24 = charCodeInt23 - 2
        let charCodeInt25 = charCodeInt24 + 2
        let charCodeInt26 = charCodeInt25 - 2
        let charCodeInt27 = charCodeInt26 + 2
        let charCodeInt28 = charCodeInt27 - 2
        let charCodeInt29 = charCodeInt28 + 2
        let charCodeInt30 = charCodeInt29 - 2
        let charCodeInt31 = charCodeInt30 + 2
        let charCodeInt32 = charCodeInt31 - 2
        let charCodeInt33 = charCodeInt32 + 2
        let charCodeInt34 = charCodeInt33 - 2
        let charCodeInt35 = charCodeInt34 + 2
        let charCodeInt36 = charCodeInt35 - 2
        let charCodeInt37 = charCodeInt36 + 2
        let charCodeInt38 = charCodeInt37 - 2
        let charCodeInt39 = charCodeInt38 + 2
        let charCodeInt40 = charCodeInt39 - 2
        let charCodeInt41 = charCodeInt40 + 2
        let charCodeInt42 = charCodeInt41 - 2
        let charCodeInt43 = charCodeInt42 + 2
        let charCodeInt44 = charCodeInt43 - 2
        let charCodeInt45 = charCodeInt44 + 2
        let charCodeInt46 = charCodeInt45 - 2
        let charCodeInt47 = charCodeInt46 + 2
        let charCodeInt48 = charCodeInt47 - 2
        let charCodeInt49 = charCodeInt48 + 2
        let charCodeInt50 = charCodeInt49 - 2
        let charCodeInt51 = charCodeInt50 + 2
        let charCodeInt52 = charCodeInt51 - 2
        let charCodeInt53 = charCodeInt52 + 2
        let charCodeInt54 = charCodeInt53 - 2
        let charCodeInt55 = charCodeInt54 + 2
        let charCodeInt56 = charCodeInt55 - 2
        let charCodeInt57 = charCodeInt56 + 2
        let charCodeInt58 = charCodeInt57 - 2
        let charCodeInt59 = charCodeInt58 + 2
        let charCodeInt60 = charCodeInt59 - 2
        let char
XCTAssertTrue(encrypt(s: "hi") == "lm") // missing argument for parameter #2 in call
XCTAssertTrue(encrypt(s: "hi") == "lm") // binary operator '==' cannot be applied to operands of type 'Void' and 'String'
XCTAssertTrue(encrypt(s: "hi") == "lm") // extraneous argument label 's:' in call
XCTAssertTrue(encrypt(s: "hi") == "lm") // cannot convert value of type 'String' to expected argument type 'UnsafeMutablePointer<CChar>?' (aka 'Optional<UnsafeMutablePointer<Int8>>')
XCTAssertTrue(encrypt(s: "asdfghjkl") == "ewhjklnop") // extraneous argument label 's:' in call
XCTAssertTrue(encrypt(s: "asdfghjkl") == "ewhjklnop") // missing argument for parameter #2 in call
XCTAssertTrue(encrypt(s: "asdfghjkl") == "ewhjklnop") // cannot convert value of type 'String' to expected argument type 'UnsafeMutablePointer<CChar>?' (aka 'Optional<UnsafeMutablePointer<Int8>>')
XCTAssertTrue(encrypt(s: "asdfghjkl") == "ewhjklnop") // binary operator '==' cannot be applied to operands of type 'Void' and 'String'
XCTAssertTrue(encrypt(s: "gf") == "kj") // missing argument for parameter #2 in call
XCTAssertTrue(encrypt(s: "gf") == "kj") // cannot convert value of type 'String' to expected argument type 'UnsafeMutablePointer<CChar>?' (aka 'Optional<UnsafeMutablePointer<Int8>>')
XCTAssertTrue(encrypt(s: "gf") == "kj") // extraneous argument label 's:' in call
XCTAssertTrue(encrypt(s: "gf") == "kj") // binary operator '==' cannot be applied to operands of type 'Void' and 'String'
XCTAssertTrue(encrypt(s: "et") == "ix") // cannot convert value of type 'String' to expected argument type 'UnsafeMutablePointer<CChar>?' (aka 'Optional<UnsafeMutablePointer<Int8>>')
XCTAssertTrue(encrypt(s: "et") == "ix") // missing argument for parameter #2 in call
XCTAssertTrue(encrypt(s: "et") == "ix") // binary operator '==' cannot be applied to operands of type 'Void' and 'String'
XCTAssertTrue(encrypt(s: "et") == "ix") // extraneous argument label 's:' in call
XCTAssertTrue(encrypt(s: "faewfawefaewg") == "jeiajeaijeiak") // cannot convert value of type 'String' to expected argument type 'UnsafeMutablePointer<CChar>?' (aka 'Optional<UnsafeMutablePointer<Int8>>')
XCTAssertTrue(encrypt(s: "faewfawefaewg") == "jeiajeaijeiak") // missing argument for parameter #2 in call
XCTAssertTrue(encrypt(s: "faewfawefaewg") == "jeiajeaijeiak") // binary operator '==' cannot be applied to operands of type 'Void' and 'String'
XCTAssertTrue(encrypt(s: "faewfawefaewg") == "jeiajeaijeiak") // extraneous argument label 's:' in call
XCTAssertTrue(encrypt(s: "hellomyfriend") == "lippsqcjvmirh") // binary operator '==' cannot be applied to operands of type 'Void' and 'String'
XCTAssertTrue(encrypt(s: "hellomyfriend") == "lippsqcjvmirh") // extraneous argument label 's:' in call
XCTAssertTrue(encrypt(s: "hellomyfriend") == "lippsqcjvmirh") // cannot convert value of type 'String' to expected argument type 'UnsafeMutablePointer<CChar>?' (aka 'Optional<UnsafeMutablePointer<Int8>>')
XCTAssertTrue(encrypt(s: "hellomyfriend") == "lippsqcjvmirh") // missing argument for parameter #2 in call
XCTAssertTrue(encrypt(s: "dxzdlmnilfuhmilufhlihufnmlimnufhlimnufhfucufh") == "hbdhpqrmpjylqmpyjlpmlyjrqpmqryjlpmqryjljygyjl") // cannot convert value of type 'String' to expected argument type 'UnsafeMutablePointer<CChar>?' (aka 'Optional<UnsafeMutablePointer<Int8>>')
XCTAssertTrue(encrypt(s: "dxzdlmnilfuhmilufhlihufnmlimnufhlimnufhfucufh") == "hbdhpqrmpjylqmpyjlpmlyjrqpmqryjlpmqryjljygyjl") // binary operator '==' cannot be applied to operands of type 'Void' and 'String'
XCTAssertTrue(encrypt(s: "dxzdlmnilfuhmilufhlihufnmlimnufhlimnufhfucufh") == "hbdhpqrmpjylqmpyjlpmlyjrqpmqryjlpmqryjljygyjl") // missing argument for parameter #2 in call
XCTAssertTrue(encrypt(s: "dxzdlmnilfuhmilufhlihufnmlimnufhlimnufhfucufh") == "hbdhpqrmpjylqmpyjlpmlyjrqpmqryjlpmqryjljygyjl") // extraneous argument label 's:' in call
XCTAssertTrue(encrypt(s: "a") == "e") // extraneous argument label 's:' in call
XCTAssertTrue(encrypt(s: "a") == "e") // missing argument for parameter #2 in call
XCTAssertTrue(encrypt(s: "a") == "e") // cannot convert value of type 'String' to expected argument type 'UnsafeMutablePointer<CChar>?' (aka 'Optional<UnsafeMutablePointer<Int8>>')
XCTAssertTrue(encrypt(s: "a") == "e") // binary operator '==' cannot be applied to operands of type 'Void' and 'String'

func encrypt(s: String) -> String {
    var result = ""
    for char in s {
        if char == " " {
            result += " "
        } else {
            let ascii = Int(char.asciiValue!)
            let newAscii = ascii + 2
            let newChar = String(UnicodeScalar(newAscii)!)
            result += newChar
        }
    }
    return result
}
```swift
// Create a function encrypt that takes a string as an argument and
// returns a string encrypted with the alphabet being rotated. 
// The alphabet should be rotated in a manner such that the letters 
// shift down by two multiplied to two places.
// For example:
// encrypt(s: "hi") == "lm"
// encrypt(s: "asdfghjkl") == "ewhjklnop"
// encrypt(s: "gf") == "kj"
// encrypt(s: "et") == "ix"
func encrypt(s: String) -> String {
    var result = ""
    for char in s {
        if char == " " {
            result += " "
        } else {
            let ascii = Int(char.asciiValue!)
            let newAscii = ascii + 2
            let newChar = String(UnicodeScalar(newAscii)!)
            result += newChar
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func encrypt(s: String) -> String {
    var result = ""
    for char in s {
        if char == " " {
            result += " "
        } else {
            let charCode = char.asciiValue!
            let newCharCode = charCode + 2
            let newChar = String(UnicodeScalar(newCharCode))
            result += newChar
        }
    }
    return result
}
```swift
// Create a function encrypt that takes a string as an argument and
// returns a string encrypted with the alphabet being rotated. 
// The alphabet should be rotated in a manner such that the letters 
// shift down by two multiplied to two places.
// For example:
// encrypt(s: "hi") == "lm"
// encrypt(s: "asdfghjkl") == "ewhjklnop"
// encrypt(s: "gf") == "kj"
// encrypt(s: "et") == "ix"
func encrypt(s: String) -> String {
    var result = ""
    for char in s {
        if char == " " {
            result += " "
        } else {
            let charCode = char.asciiValue!
            let newCharCode = charCode + 2
            let newChar = String(UnicodeScalar(newCharCode))
            result += newChar
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func encrypt(s: String) -> String {
    var result = ""
    for char in s {
        let ascii = char.asciiValue!
        if ascii >= 97 && ascii <= 122 {
            let newAscii = ascii + 2
            if newAscii > 122 {
                result += String(UnicodeScalar(96 + (newAscii - 122)))
            } else {
                result += String(UnicodeScalar(newAscii))
            }
        } else {
            result += String(char)
        }
    }
    return result
}
```swift
// Create a function encrypt that takes a string as an argument and
// returns a string encrypted with the alphabet being rotated. 
// The alphabet should be rotated in a manner such that the letters 
// shift down by two multiplied to two places.
// For example:
// encrypt(s: "hi") == "lm"
// encrypt(s: "asdfghjkl") == "ewhjklnop"
// encrypt(s: "gf") == "kj"
// encrypt(s: "et") == "ix"
func encrypt(s: String) -> String {
    var result = ""
    for char in s {
        let ascii = char.asciiValue!
        if ascii >= 97 && ascii <= 122 {
            let newAscii = ascii + 2
            if newAscii > 122 {
                result += String(UnicodeScalar(96 + (newAscii - 122)))
            } else {
                result += String(UnicodeScalar(newAscii))
            }
        } else {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func encrypt(s: String) -> String {
    var result = ""
    for char in s {
        if char == " " {
            result += " "
        } else {
            let charCode = char.asciiValue!
            let newCharCode = charCode + 2
            let newChar = String(UnicodeScalar(newCharCode))
            result += newChar
        }
    }
    return result
}

func decrypt(s: String) -> String {
    var result = ""
    for char in s {
        if char == " " {
            result += " "
        } else {
            let charCode = char.asciiValue!
            let newCharCode = charCode - 2
            let newChar = String(UnicodeScalar(newCharCode))
            result += newChar
        }
    }
    return result
}
```swift
// Create a function encrypt that takes a string as an argument and
// returns a string encrypted with the alphabet being rotated. 
// The alphabet should be rotated in a manner such that the letters 
// shift down by two multiplied to two places.
// For example:
// encrypt(s: "hi") == "lm"
// encrypt(s: "asdfghjkl") == "ewhjklnop"
// encrypt(s: "gf") == "kj"
// encrypt(s: "et") == "ix"
func encrypt(s: String) -> String {
    var result = ""
    for char in s {
        if char == " " {
            result += " "
        } else {
            let charCode = char.asciiValue!
            let newCharCode = charCode + 2
            let newChar = String(UnicodeScalar(newCharCode))
            result += newChar
        }
    }
    return result
}

// Create a function decrypt that takes a string as an argument and
// returns a string decrypted with the alphabet being rotated. 
// The alphabet should be rotated in a manner such that the letters 
// shift up by two multiplied to two places.
// For example:
// decrypt(s: "lm") == "hi"
// decrypt(s: "ewhjklnop") == "asdfghjkl"
// decrypt(s: "kj") == "gf"
// decrypt(s: "ix") == "et"
func decrypt(s: String) -> String {
    var result = ""
    for char in s {
        if char == " " {
            result += " "
        } else {
            let charCode = char.asciiValue!
            let newCharCode = charCode - 2
            let newChar = String(UnicodeScalar(newCharCode))
            result += newChar
        }
    }
    return result
}<|file_separator|>
 // XCTAssertTrue failed

func encrypt(s: String) -> String {
    var result = ""
    for char in s {
        if char == " " {
            result += " "
        } else {
            let charCode = char.asciiValue!
            let newCharCode = charCode + 2
            let newChar = String(UnicodeScalar(newCharCode))
            result += newChar
        }
    }
    return result
}
```swift
// Create a function encrypt that takes a string as an argument and
// returns a string encrypted with the alphabet being rotated. 
// The alphabet should be rotated in a manner such that the letters 
// shift down by two multiplied to two places.
// For example:
// encrypt(s: "hi") == "lm"
// encrypt(s: "asdfghjkl") == "ewhjklnop"
// encrypt(s: "gf") == "kj"
// encrypt(s: "et") == "ix"
func encrypt(s: String) -> String {
    var result = ""
    for char in s {
        if char == " " {
            result += " "
        } else {
            let charCode = char.asciiValue!
            let newCharCode = charCode + 2
            let newChar = String(UnicodeScalar(newCharCode))
            result += newChar
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func encrypt(s: String) -> String {
    var result = ""
    for char in s {
        if char == " " {
            result += " "
        } else {
            let charCode = char.asciiValue!
            let newCharCode = charCode + 2
            let newChar = String(UnicodeScalar(newCharCode))
            result += newChar
        }
    }
    return result
}
```swift
// Create a function encrypt that takes a string as an argument and
// returns a string encrypted with the alphabet being rotated. 
// The alphabet should be rotated in a manner such that the letters 
// shift down by two multiplied to two places.
// For example:
// encrypt(s: "hi") == "lm"
// encrypt(s: "asdfghjkl") == "ewhjklnop"
// encrypt(s: "gf") == "kj"
// encrypt(s: "et") == "ix"
func encrypt(s: String) -> String {
    var result = ""
    for char in s {
        if char == " " {
            result += " "
        } else {
            let charCode = char.asciiValue!
            let newCharCode = charCode + 2
            let newChar = String(UnicodeScalar(newCharCode))
            result += newChar
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func nextSmallest(lst: [Int]) -> Int? {
    if lst.count == 0 {
        return nil
    }
    if lst.count == 1 {
        return nil
    }
    var sorted = lst.sorted()
    for i in 0..<sorted.count {
        if sorted[i] != i + 1 {
            return sorted[i]
        }
    }
    return nil
}
```swift
// You are given an array of integers.
// Write a function next_smallest() that returns the 2nd smallest element of the array.
// Return nil if there is no such element.
// nextSmallest(lst: [1, 2, 3, 4, 5]) == 2
// nextSmallest(lst: [5, 1, 4, 3, 2]) == 2
// nextSmallest(lst: [] as [Int]) == nil
// nextSmallest(lst: [1, 1]) == nil
func nextSmallest(lst: [Int]) -> Int? {
    if lst.count == 0 {
        return nil
    }
    if lst.count == 1 {
        return nil
    }
    var sorted = lst.sorted()
    for i in 0..<sorted.count {
        if sorted[i] != i + 1 {
            return sorted[i]
        }
    }
    return nil
}
<|file_separator|>
var sorted = lst.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func nextSmallest(lst: [Int]) -> Int? {
    if lst.count == 0 {
        return nil
    }
    if lst.count == 1 {
        return nil
    }
    var sorted = lst.sorted()
    for i in 0..<sorted.count {
        if sorted[i] != sorted[i + 1] {
            return sorted[i + 1]
        }
    }
    return nil
}
```swift
// You are given an array of integers.
// Write a function next_smallest() that returns the 2nd smallest element of the array.
// Return nil if there is no such element.
// nextSmallest(lst: [1, 2, 3, 4, 5]) == 2
// nextSmallest(lst: [5, 1, 4, 3, 2]) == 2
// nextSmallest(lst: [] as [Int]) == nil
// nextSmallest(lst: [1, 1]) == nil
func nextSmallest(lst: [Int]) -> Int? {
    if lst.count == 0 {
        return nil
    }
    if lst.count == 1 {
        return nil
    }
    var sorted = lst.sorted()
    for i in 0..<sorted.count {
        if sorted[i] != sorted[i + 1] {
            return sorted[i + 1]
        }
    }
    return nil
}
<|file_separator|>
var sorted = lst.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constant
 // Fatal error: Index out of range

func nextSmallest(lst: [Int]) -> Int? {
    if lst.count < 2 {
        return nil
    }
    var sorted = lst.sorted()
    for i in 1..<sorted.count {
        if sorted[i] != sorted[i-1] {
            return sorted[i]
        }
    }
    return nil
}
```swift
// You are given an array of integers.
// Write a function next_smallest() that returns the 2nd smallest element of the array.
// Return nil if there is no such element.
// nextSmallest(lst: [1, 2, 3, 4, 5]) == 2
// nextSmallest(lst: [5, 1, 4, 3, 2]) == 2
// nextSmallest(lst: [] as [Int]) == nil
// nextSmallest(lst: [1, 1]) == nil
func nextSmallest(lst: [Int]) -> Int? {
    if lst.count < 2 {
        return nil
    }
    var sorted = lst.sorted()
    for i in 1..<sorted.count {
        if sorted[i] != sorted[i-1] {
            return sorted[i]
        }
    }
    return nil
}
<|file_separator|>
var sorted = lst.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constant

func nextSmallest(lst: [Int]) -> Int? {
  var sorted = lst.sorted()
  if sorted.count == 0 {
    return nil
  }
  if sorted.count == 1 {
    return nil
  }
  return sorted[1]
}
```swift
// You are given an array of integers.
// Write a function next_smallest() that returns the 2nd smallest element of the array.
// Return nil if there is no such element.
// nextSmallest(lst: [1, 2, 3, 4, 5]) == 2
// nextSmallest(lst: [5, 1, 4, 3, 2]) == 2
// nextSmallest(lst: [] as [Int]) == nil
// nextSmallest(lst: [1, 1]) == nil
func nextSmallest(lst: [Int]) -> Int? {
  var sorted = lst.sorted()
  if sorted.count == 0 {
    return nil
  }
  if sorted.count == 1 {
    return nil
  }
  return sorted[1]
}
<|file_separator|>
var sorted = lst.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func nextSmallest(lst: [Int]) -> Int? {
    if lst.count == 0 {
        return nil
    }
    if lst.count == 1 {
        return nil
    }
    var sorted = lst.sorted()
    for i in 0..<sorted.count {
        if sorted[i] != sorted[i + 1] {
            return sorted[i + 1]
        }
    }
    return nil
}
```swift
// You are given an array of integers.
// Write a function next_smallest() that returns the 2nd smallest element of the array.
// Return nil if there is no such element.
// nextSmallest(lst: [1, 2, 3, 4, 5]) == 2
// nextSmallest(lst: [5, 1, 4, 3, 2]) == 2
// nextSmallest(lst: [] as [Int]) == nil
// nextSmallest(lst: [1, 1]) == nil
func nextSmallest(lst: [Int]) -> Int? {
    if lst.count == 0 {
        return nil
    }
    if lst.count == 1 {
        return nil
    }
    var sorted = lst.sorted()
    for i in 0..<sorted.count {
        if sorted[i] != sorted[i + 1] {
            return sorted[i + 1]
        }
    }
    return nil
}
<|file_separator|>
var sorted = lst.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constant
 // Fatal error: Index out of range

func nextSmallest(lst: [Int]) -> Int? {
    if lst.count == 0 {
        return nil
    }
    if lst.count == 1 {
        return nil
    }
    var sorted = lst.sorted()
    for i in 0..<sorted.count {
        if sorted[i] != sorted[i+1] {
            return sorted[i+1]
        }
    }
    return nil
}
```swift
// You are given an array of integers.
// Write a function next_smallest() that returns the 2nd smallest element of the array.
// Return nil if there is no such element.
// nextSmallest(lst: [1, 2, 3, 4, 5]) == 2
// nextSmallest(lst: [5, 1, 4, 3, 2]) == 2
// nextSmallest(lst: [] as [Int]) == nil
// nextSmallest(lst: [1, 1]) == nil
func nextSmallest(lst: [Int]) -> Int? {
    if lst.count == 0 {
        return nil
    }
    if lst.count == 1 {
        return nil
    }
    var sorted = lst.sorted()
    for i in 0..<sorted.count {
        if sorted[i] != sorted[i+1] {
            return sorted[i+1]
        }
    }
    return nil
}
<|file_separator|>
var sorted = lst.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constant
 // Fatal error: Index out of range

func nextSmallest(lst: [Int]) -> Int? {
    if lst.count == 0 {
        return nil
    }
    if lst.count == 1 {
        return nil
    }
    var sorted = lst.sorted()
    var result = sorted[1]
    for i in 1..<sorted.count {
        if sorted[i] != sorted[i-1] {
            result = sorted[i]
            break
        }
    }
    return result
}
```swift
// You are given an array of integers.
// Write a function next_smallest() that returns the 2nd smallest element of the array.
// Return nil if there is no such element.
// nextSmallest(lst: [1, 2, 3, 4, 5]) == 2
// nextSmallest(lst: [5, 1, 4, 3, 2]) == 2
// nextSmallest(lst: [] as [Int]) == nil
// nextSmallest(lst: [1, 1]) == nil
func nextSmallest(lst: [Int]) -> Int? {
    if lst.count == 0 {
        return nil
    }
    if lst.count == 1 {
        return nil
    }
    var sorted = lst.sorted()
    var result = sorted[1]
    for i in 1..<sorted.count {
        if sorted[i] != sorted[i-1] {
            result = sorted[i]
            break
        }
    }
    return result
}
<|file_separator|>
var sorted = lst.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func nextSmallest(lst: [Int]) -> Int? {
    if lst.count == 0 {
        return nil
    }
    
    if lst.count == 1 {
        return nil
    }
    
    var sorted = lst.sorted()
    
    for i in 0..<sorted.count {
        if sorted[i] != sorted[i + 1] {
            return sorted[i + 1]
        }
    }
    
    return nil
}
```swift
// You are given an array of integers.
// Write a function next_smallest() that returns the 2nd smallest element of the array.
// Return nil if there is no such element.
// nextSmallest(lst: [1, 2, 3, 4, 5]) == 2
// nextSmallest(lst: [5, 1, 4, 3, 2]) == 2
// nextSmallest(lst: [] as [Int]) == nil
// nextSmallest(lst: [1, 1]) == nil
func nextSmallest(lst: [Int]) -> Int? {
    if lst.count == 0 {
        return nil
    }
    
    if lst.count == 1 {
        return nil
    }
    
    var sorted = lst.sorted()
    
    for i in 0..<sorted.count {
        if sorted[i] != sorted[i + 1] {
            return sorted[i + 1]
        }
    }
    
    return nil
}
<|file_separator|>
var sorted = lst.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constant
 // Fatal error: Index out of range

func nextSmallest(lst: [Int]) -> Int? {
    if lst.count == 0 {
        return nil
    }
    if lst.count == 1 {
        return nil
    }
    var sorted = lst.sorted()
    for i in 0..<sorted.count {
        if sorted[i] != sorted[i+1] {
            return sorted[i+1]
        }
    }
    return nil
}
```swift
// You are given an array of integers.
// Write a function next_smallest() that returns the 2nd smallest element of the array.
// Return nil if there is no such element.
// nextSmallest(lst: [1, 2, 3, 4, 5]) == 2
// nextSmallest(lst: [5, 1, 4, 3, 2]) == 2
// nextSmallest(lst: [] as [Int]) == nil
// nextSmallest(lst: [1, 1]) == nil
func nextSmallest(lst: [Int]) -> Int? {
    if lst.count == 0 {
        return nil
    }
    if lst.count == 1 {
        return nil
    }
    var sorted = lst.sorted()
    for i in 0..<sorted.count {
        if sorted[i] != sorted[i+1] {
            return sorted[i+1]
        }
    }
    return nil
}
<|file_separator|>
var sorted = lst.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constant
 // Fatal error: Index out of range

func nextSmallest(lst: [Int]) -> Int? {
    if lst.count == 0 {
        return nil
    }
    if lst.count == 1 {
        return nil
    }
    var sorted = lst.sorted()
    for i in 0..<sorted.count {
        if sorted[i] != i + 1 {
            return sorted[i]
        }
    }
    return nil
}
```swift
// You are given an array of integers.
// Write a function next_smallest() that returns the 2nd smallest element of the array.
// Return nil if there is no such element.
// nextSmallest(lst: [1, 2, 3, 4, 5]) == 2
// nextSmallest(lst: [5, 1, 4, 3, 2]) == 2
// nextSmallest(lst: [] as [Int]) == nil
// nextSmallest(lst: [1, 1]) == nil
func nextSmallest(lst: [Int]) -> Int? {
    if lst.count == 0 {
        return nil
    }
    if lst.count == 1 {
        return nil
    }
    var sorted = lst.sorted()
    for i in 0..<sorted.count {
        if sorted[i] != i + 1 {
            return sorted[i]
        }
    }
    return nil
}
<|file_separator|>
var sorted = lst.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func isBored(S: String) -> Int {
  var count = 0
  var sentence = ""
  var i = 0
  while i < S.count {
    if S[i] == " " {
      if sentence == "I" {
        count += 1
      }
      sentence = ""
    } else {
      sentence += String(S[i])
    }
    i += 1
  }
  if sentence == "I" {
    count += 1
  }
  return count
}
```swift
// You'll be given a string of words, and your task is to count the number
// of boredoms. A boredom is a sentence that starts with the word "I".
// Sentences are delimited by '.', '?' or '!'.
// For example:
// isBored(S: "Hello world") == 0
// isBored(S: "The sky is blue. The sun is shining. I love this weather") == 1
func isBored(S: String) -> Int {
  var count = 0
  var sentence = ""
  var i = 0
  while i < S.count {
    if S[i] == " " {
      if sentence == "I" {
        count += 1
      }
      sentence = ""
    } else {
      sentence += String(S[i])
    }
    i += 1
  }
  if sentence == "I" {
    count += 1
  }
  return count
}
<|file_separator|>
if S[i] == " " { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
sentence += String(S[i]) // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func isBored(S: String) -> Int {
  var count = 0
  var words = S.components(separatedBy: " ")
  for word in words {
    if word.hasPrefix("I") {
      count += 1
    }
  }
  return count
}
```swift
// You'll be given a string of words, and your task is to count the number
// of boredoms. A boredom is a sentence that starts with the word "I".
// Sentences are delimited by '.', '?' or '!'.
// For example:
// isBored(S: "Hello world") == 0
// isBored(S: "The sky is blue. The sun is shining. I love this weather") == 1
func isBored(S: String) -> Int {
  var count = 0
  var words = S.components(separatedBy: " ")
  for word in words {
    if word.hasPrefix("I") {
      count += 1
    }
  }
  return count
}
<|file_separator|>
var words = S.components(separatedBy: " ") // variable 'words' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func isBored(S: String) -> Int {
    let sentences = S.components(separatedBy: [".", "?", "!"])
    return sentences.filter { $0.contains("I") }.count
}
```swift
// You'll be given a string of words, and your task is to count the number
// of boredoms. A boredom is a sentence that starts with the word "I".
// Sentences are delimited by '.', '?' or '!'.
// For example:
// isBored(S: "Hello world") == 0
// isBored(S: "The sky is blue. The sun is shining. I love this weather") == 1
func isBored(S: String) -> Int {
    let sentences = S.components(separatedBy: [".", "?", "!"])
    return sentences.filter { $0.contains("I") }.count
}
<|file_separator|>
 // XCTAssertTrue failed

func isBored(S: String) -> Int {
    let sentences = S.components(separatedBy: [".", "?", "!"])
    var count = 0
    for sentence in sentences {
        if sentence.contains("I") {
            count += 1
        }
    }
    return count
}
```swift
// You'll be given a string of words, and your task is to count the number
// of boredoms. A boredom is a sentence that starts with the word "I".
// Sentences are delimited by '.', '?' or '!'.
// For example:
// isBored(S: "Hello world") == 0
// isBored(S: "The sky is blue. The sun is shining. I love this weather") == 1
func isBored(S: String) -> Int {
    let sentences = S.components(separatedBy: [".", "?", "!"])
    var count = 0
    for sentence in sentences {
        if sentence.contains("I") {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func isBored(S: String) -> Int {
  var count = 0
  var sentence = ""
  var words = S.components(separatedBy: " ")
  for word in words {
    if word.hasPrefix("I") {
      sentence += word + " "
    }
  }
  var sentences = sentence.components(separatedBy: ".")
  for sentence in sentences {
    if sentence.hasPrefix("I") {
      count += 1
    }
  }
  return count
}
```swift
// You'll be given a string of words, and your task is to count the number
// of boredoms. A boredom is a sentence that starts with the word "I".
// Sentences are delimited by '.', '?' or '!'.
// For example:
// isBored(S: "Hello world") == 0
// isBored(S: "The sky is blue. The sun is shining. I love this weather") == 1
func isBored(S: String) -> Int {
  var count = 0
  var sentence = ""
  var words = S.components(separatedBy: " ")
  for word in words {
    if word.hasPrefix("I") {
      sentence += word + " "
    }
  }
  var sentences = sentence.components(separatedBy: ".")
  for sentence in sentences {
    if sentence.hasPrefix("I") {
      count += 1
    }
  }
  return count
}
<|file_separator|>
var words = S.components(separatedBy: " ") // variable 'words' was never mutated; consider changing to 'let' constant
var sentences = sentence.components(separatedBy: ".") // variable 'sentences' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func isBored(S: String) -> Int {
  var count = 0
  var words = S.components(separatedBy: " ")
  for word in words {
    if word.hasPrefix("I") {
      count += 1
    }
  }
  return count
}
```swift
// You'll be given a string of words, and your task is to count the number
// of boredoms. A boredom is a sentence that starts with the word "I".
// Sentences are delimited by '.', '?' or '!'.
// For example:
// isBored(S: "Hello world") == 0
// isBored(S: "The sky is blue. The sun is shining. I love this weather") == 1
func isBored(S: String) -> Int {
  var count = 0
  var words = S.components(separatedBy: " ")
  for word in words {
    if word.hasPrefix("I") {
      count += 1
    }
  }
  return count
}
<|file_separator|>
var words = S.components(separatedBy: " ") // variable 'words' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func isBored(S: String) -> Int {
    var count = 0
    let sentences = S.split(separator: ".", omittingEmptySubsequences: true)
    for sentence in sentences {
        if sentence.starts(with: "I") {
            count += 1
        }
    }
    return count
}
```swift
// You'll be given a string of words, and your task is to count the number
// of boredoms. A boredom is a sentence that starts with the word "I".
// Sentences are delimited by '.', '?' or '!'.
// For example:
// isBored(S: "Hello world") == 0
// isBored(S: "The sky is blue. The sun is shining. I love this weather") == 1
func isBored(S: String) -> Int {
    var count = 0
    let sentences = S.split(separator: ".", omittingEmptySubsequences: true)
    for sentence in sentences {
        if sentence.starts(with: "I") {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func isBored(S: String) -> Int {
    var count = 0
    let sentences = S.split(separator: ".", omittingEmptySubsequences: true)
    for sentence in sentences {
        if sentence.starts(with: "I") {
            count += 1
        }
    }
    return count
}
```swift
// You'll be given a string of words, and your task is to count the number
// of boredoms. A boredom is a sentence that starts with the word "I".
// Sentences are delimited by '.', '?' or '!'.
// For example:
// isBored(S: "Hello world") == 0
// isBored(S: "The sky is blue. The sun is shining. I love this weather") == 1
func isBored(S: String) -> Int {
    var count = 0
    let sentences = S.split(separator: ".", omittingEmptySubsequences: true)
    for sentence in sentences {
        if sentence.starts(with: "I") {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func isBored(S: String) -> Int {
    var count = 0
    let words = S.split(separator: " ")
    for word in words {
        if word.hasPrefix("I") {
            count += 1
        }
    }
    return count
}
```swift
// You'll be given a string of words, and your task is to count the number
// of boredoms. A boredom is a sentence that starts with the word "I".
// Sentences are delimited by '.', '?' or '!'.
// For example:
// isBored(S: "Hello world") == 0
// isBored(S: "The sky is blue. The sun is shining. I love this weather") == 1
func isBored(S: String) -> Int {
    var count = 0
    let words = S.split(separator: " ")
    for word in words {
        if word.hasPrefix("I") {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func isBored(S: String) -> Int {
    let sentences = S.split(separator: ".", omittingEmptySubsequences: true)
    return sentences.filter { $0.hasPrefix("I") }.count
}
```swift
// You'll be given a string of words, and your task is to count the number
// of boredoms. A boredom is a sentence that starts with the word "I".
// Sentences are delimited by '.', '?' or '!'.
// For example:
// isBored(S: "Hello world") == 0
// isBored(S: "The sky is blue. The sun is shining. I love this weather") == 1
func isBored(S: String) -> Int {
    let sentences = S.split(separator: ".", omittingEmptySubsequences: true)
    return sentences.filter { $0.hasPrefix("I") }.count
}
<|file_separator|>
 // XCTAssertTrue failed

func anyInt(x: Double, y: Double, z: Double) -> Bool {
  return (x + y == z) || (x + z == y) || (y + z == x)
}
```swift
// Create a function that takes 3 numbers.
// Returns true if one of the numbers is equal to the sum of the other two, and all numbers are integers.
// Returns false in any other cases.
// Examples
// anyInt(x: 5, y: 2, z: 7) == true
// anyInt(x: 3, y: 2, z: 2) == false
// anyInt(x: 3, y: -2, z: 1) == true
// anyInt(x: 3.6, y: -2.2, z: 2) == false
func anyInt(x: Double, y: Double, z: Double) -> Bool {
  return (x + y == z) || (x + z == y) || (y + z == x)
}
<|file_separator|>
 // XCTAssertTrue failed

func anyInt(x: Double, y: Double, z: Double) -> Bool {
  if x == y + z || x == z + y || y == x + z || y == z + x || z == x + y || z == y + x {
    return true
  }
  return false
}
```swift
// Create a function that takes 3 numbers.
// Returns true if one of the numbers is equal to the sum of the other two, and all numbers are integers.
// Returns false in any other cases.
// Examples
// anyInt(x: 5, y: 2, z: 7) == true
// anyInt(x: 3, y: 2, z: 2) == false
// anyInt(x: 3, y: -2, z: 1) == true
// anyInt(x: 3.6, y: -2.2, z: 2) == false
func anyInt(x: Double, y: Double, z: Double) -> Bool {
  if x == y + z || x == z + y || y == x + z || y == z + x || z == x + y || z == y + x {
    return true
  }
  return false
}
<|file_separator|>
 // XCTAssertTrue failed

func anyInt(x: Double, y: Double, z: Double) -> Bool {
  if x == y + z || x == z + y || y == x + z || y == z + x || z == x + y || z == y + x {
    return true
  } else {
    return false
  }
}
```swift
// Create a function that takes 3 numbers.
// Returns true if one of the numbers is equal to the sum of the other two, and all numbers are integers.
// Returns false in any other cases.
// Examples
// anyInt(x: 5, y: 2, z: 7) == true
// anyInt(x: 3, y: 2, z: 2) == false
// anyInt(x: 3, y: -2, z: 1) == true
// anyInt(x: 3.6, y: -2.2, z: 2) == false
func anyInt(x: Double, y: Double, z: Double) -> Bool {
  if x == y + z || x == z + y || y == x + z || y == z + x || z == x + y || z == y + x {
    return true
  } else {
    return false
  }
}
<|file_separator|>
 // XCTAssertTrue failed

func anyInt(x: Double, y: Double, z: Double) -> Bool {
  if x == y + z || x == z + y || y == x + z || y == z + x || z == x + y || z == y + x {
    return true
  } else {
    return false
  }
}
```swift
// Create a function that takes 3 numbers.
// Returns true if one of the numbers is equal to the sum of the other two, and all numbers are integers.
// Returns false in any other cases.
// Examples
// anyInt(x: 5, y: 2, z: 7) == true
// anyInt(x: 3, y: 2, z: 2) == false
// anyInt(x: 3, y: -2, z: 1) == true
// anyInt(x: 3.6, y: -2.2, z: 2) == false
func anyInt(x: Double, y: Double, z: Double) -> Bool {
  if x == y + z || x == z + y || y == x + z || y == z + x || z == x + y || z == y + x {
    return true
  } else {
    return false
  }
}
<|file_separator|>
 // XCTAssertTrue failed

func anyInt(x: Double, y: Double, z: Double) -> Bool {
    if x == y + z || x == z + y || y == x + z || y == z + x || z == x + y || z == y + x {
        return true
    } else {
        return false
    }
}
```swift
// Create a function that takes 3 numbers.
// Returns true if one of the numbers is equal to the sum of the other two, and all numbers are integers.
// Returns false in any other cases.
// Examples
// anyInt(x: 5, y: 2, z: 7) == true
// anyInt(x: 3, y: 2, z: 2) == false
// anyInt(x: 3, y: -2, z: 1) == true
// anyInt(x: 3.6, y: -2.2, z: 2) == false
func anyInt(x: Double, y: Double, z: Double) -> Bool {
    if x == y + z || x == z + y || y == x + z || y == z + x || z == x + y || z == y + x {
        return true
    } else {
        return false
    }
}
<|file_separator|>
 // XCTAssertTrue failed

func anyInt(x: Double, y: Double, z: Double) -> Bool {
  if x == y + z || x == z + y || y == x + z || y == z + x || z == x + y || z == y + x {
    return true
  } else {
    return false
  }
}
```swift
// Create a function that takes 3 numbers.
// Returns true if one of the numbers is equal to the sum of the other two, and all numbers are integers.
// Returns false in any other cases.
// Examples
// anyInt(x: 5, y: 2, z: 7) == true
// anyInt(x: 3, y: 2, z: 2) == false
// anyInt(x: 3, y: -2, z: 1) == true
// anyInt(x: 3.6, y: -2.2, z: 2) == false
func anyInt(x: Double, y: Double, z: Double) -> Bool {
  if x == y + z || x == z + y || y == x + z || y == z + x || z == x + y || z == y + x {
    return true
  } else {
    return false
  }
}
<|file_separator|>
 // XCTAssertTrue failed

func anyInt(x: Double, y: Double, z: Double) -> Bool {
  return (x + y == z) || (x + z == y) || (y + z == x)
}
```swift
// Create a function that takes 3 numbers.
// Returns true if one of the numbers is equal to the sum of the other two, and all numbers are integers.
// Returns false in any other cases.
// Examples
// anyInt(x: 5, y: 2, z: 7) == true
// anyInt(x: 3, y: 2, z: 2) == false
// anyInt(x: 3, y: -2, z: 1) == true
// anyInt(x: 3.6, y: -2.2, z: 2) == false
func anyInt(x: Double, y: Double, z: Double) -> Bool {
  return (x + y == z) || (x + z == y) || (y + z == x)
}
<|file_separator|>
 // XCTAssertTrue failed

func anyInt(x: Double, y: Double, z: Double) -> Bool {
    return (x + y == z) || (x + z == y) || (y + z == x) || (x == y && x == z)
}
```swift
// Create a function that takes 3 numbers.
// Returns true if one of the numbers is equal to the sum of the other two, and all numbers are integers.
// Returns false in any other cases.
// Examples
// anyInt(x: 5, y: 2, z: 7) == true
// anyInt(x: 3, y: 2, z: 2) == false
// anyInt(x: 3, y: -2, z: 1) == true
// anyInt(x: 3.6, y: -2.2, z: 2) == false
func anyInt(x: Double, y: Double, z: Double) -> Bool {
    return (x + y == z) || (x + z == y) || (y + z == x) || (x == y && x == z)
}
<|file_separator|>
 // XCTAssertTrue failed

func anyInt(x: Double, y: Double, z: Double) -> Bool {
  if x == y + z || x == z + y || y == x + z || y == z + x || z == x + y || z == y + x {
    return true
  } else {
    return false
  }
}
```swift
// Create a function that takes 3 numbers.
// Returns true if one of the numbers is equal to the sum of the other two, and all numbers are integers.
// Returns false in any other cases.
// Examples
// anyInt(x: 5, y: 2, z: 7) == true
// anyInt(x: 3, y: 2, z: 2) == false
// anyInt(x: 3, y: -2, z: 1) == true
// anyInt(x: 3.6, y: -2.2, z: 2) == false
func anyInt(x: Double, y: Double, z: Double) -> Bool {
  if x == y + z || x == z + y || y == x + z || y == z + x || z == x + y || z == y + x {
    return true
  } else {
    return false
  }
}
<|file_separator|>
 // XCTAssertTrue failed

func anyInt(x: Double, y: Double, z: Double) -> Bool {
  return (x + y == z) || (x + z == y) || (y + z == x)
}
```swift
// Create a function that takes 3 numbers.
// Returns true if one of the numbers is equal to the sum of the other two, and all numbers are integers.
// Returns false in any other cases.
// Examples
// anyInt(x: 5, y: 2, z: 7) == true
// anyInt(x: 3, y: 2, z: 2) == false
// anyInt(x: 3, y: -2, z: 1) == true
// anyInt(x: 3.6, y: -2.2, z: 2) == false
func anyInt(x: Double, y: Double, z: Double) -> Bool {
  return (x + y == z) || (x + z == y) || (y + z == x)
}
<|file_separator|>
 // XCTAssertTrue failed

func encode(message: String) -> String {
    var message = message
    for i in 0..<message.count {
        if message[i] == "a" {
            message[i] = "b"
        }
        if message[i] == "e" {
            message[i] = "f"
        }
        if message[i] == "i" {
            message[i] = "j"
        }
        if message[i] == "o" {
            message[i] = "p"
        }
        if message[i] == "u" {
            message[i] = "v"
        }
    }
    return message
}

func decode(message: String) -> String {
    var message = message
    for i in 0..<message.count {
        if message[i] == "b" {
            message[i] = "a"
        }
        if message[i] == "f" {
            message[i] = "e"
        }
        if message[i] == "j" {
            message[i] = "i"
        }
        if message[i] == "p" {
            message[i] = "o"
        }
        if message[i] == "v" {
            message[i] = "u"
        }
    }
    return message
}
```swift
// Write a function that takes a message, and encodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// encode(message: "test") == "TGST"
// encode(message: "This is a message") == "tHKS KS C MGSSCGG"
func encode(message: String) -> String {
    var message = message
    for i in 0..<message.count {
        if message[i] == "a" {
            message[i] = "b"
        }
        if message[i] == "e" {
            message[i] = "f"
        }
        if message[i] == "i" {
            message[i] = "j"
        }
        if message[i] == "o" {
            message[i] = "p"
        }
        if message[i] == "u" {
            message[i] = "v"
        }
    }
    return message
}

// Write a function that takes a message, and decodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// decode(message: "TGST") == "test"
// decode(message: "tHKS KS C MGSSCGG") == "This is a message"
func decode(message: String) -> String {
    var message = message
    for i in 0..<message.count {
        if message[i] == "b" {
            message[i] = "a"
        }
        if message[i] == "f" {
            message[i] = "e"
        }
        if message[i] == "j" {
            message[i] = "i"
        }
        if message[i] == "p" {
            message[i] = "o"
        }
        if message[i] == "v" {
            message[i] = "u"
        }
    }
    return message
}<|file_separator|>
if message[i] == "a" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
message[i] = "b" // cannot assign through subscript: subscript is get-only
if message[i] == "e" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
message[i] = "f" // cannot assign through subscript: subscript is get-only
if message[i] == "i" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
message[i] = "j" // cannot assign through subscript: subscript is get-only
if message[i] == "o" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
message[i] = "p" // cannot assign through subscript: subscript is get-only
if message[i] == "u" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
message[i] = "v" // cannot assign through subscript: subscript is get-only
if message[i] == "b" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
message[i] = "a" // cannot assign through subscript: subscript is get-only
if message[i] == "f" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
message[i] = "e" // cannot assign through subscript: subscript is get-only
if message[i] == "j" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
message[i] = "i" // cannot assign through subscript: subscript is get-only
if message[i] == "p" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
message[i] = "o" // cannot assign through subscript: subscript is get-only
if message[i] == "v" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
message[i] = "u" // cannot assign through subscript: subscript is get-only

func encode(message: String) -> String {
    var encodedMessage = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            encodedMessage += String(char)
        } else {
            if char.isUppercase {
                encodedMessage += String(char.lowercased())
            } else {
                encodedMessage += String(char.uppercased())
            }
        }
    }
    return encodedMessage
}

func encode2(message: String) -> String {
    var encodedMessage = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            encodedMessage += String(char)
        } else {
            if char.isUppercase {
                encodedMessage += String(char.lowercased())
            } else {
                encodedMessage += String(char.uppercased())
            }
        }
    }
    return encodedMessage
}

func encode3(message: String) -> String {
    var encodedMessage = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            encodedMessage += String(char)
        } else {
            if char.isUppercase {
                encodedMessage += String(char.lowercased())
            } else {
                encodedMessage += String(char.uppercased())
            }
        }
    }
    return encodedMessage
}

func encode4(message: String) -> String {
    var encodedMessage = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            encodedMessage += String(char)
        } else {
            if char.isUppercase {
                encodedMessage += String(char.lowercased())
            } else {
                encodedMessage += String(char.uppercased())
            }
        }
    }
    return encodedMessage
}
```swift
// Write a function that takes a message, and encodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// encode(message: "test") == "TGST"
// encode(message: "This is a message") == "tHKS KS C MGSSCGG"
func encode(message: String) -> String {
    var encodedMessage = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            encodedMessage += String(char)
        } else {
            if char.isUppercase {
                encodedMessage += String(char.lowercased())
            } else {
                encodedMessage += String(char.uppercased())
            }
        }
    }
    return encodedMessage
}

// Write a function that takes a message, and encodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// encode(message: "test") == "TGST"
// encode(message: "This is a message") == "tHKS KS C MGSSCGG"
func encode2(message: String) -> String {
    var encodedMessage = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            encodedMessage += String(char)
        } else {
            if char.isUppercase {
                encodedMessage += String(char.lowercased())
            } else {
                encodedMessage += String(char.uppercased())
            }
        }
    }
    return encodedMessage
}

// Write a function that takes a message, and encodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// encode(message: "test") == "TGST"
// encode(message: "This is a message") == "tHKS KS C MGSSCGG"
func encode3(message: String) -> String {
    var encodedMessage = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            encodedMessage += String(char)
        } else {
            if char.isUppercase {
                encodedMessage += String(char.lowercased())
            } else {
                encodedMessage += String(char.uppercased())
            }
        }
    }
    return encodedMessage
}

// Write a function that takes a message, and encodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// encode(message: "test") == "TGST"
// encode(message: "This is a message") == "tHKS KS C MGSSCGG"
func encode4(message: String) -> String {
    var encodedMessage = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            encodedMessage += String(char)
        } else {
            if char.isUppercase {
                encodedMessage += String(char.lowercased())
            } else {
                encodedMessage += String(char.uppercased())
            }
        }
    }
    return encodedMessage
}

// Write a function that takes a message, and encodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// encode(message: "test") == "TGST"
// encode(message: "This is a message") == "tHKS KS C MGSSCGG"
func encode5(message: String) -> String {
    var encodedMessage = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            encodedMessage += String(char)
        } else {
            if char.isUppercase {
                encodedMessage += String(char.lowercased())
            } else {
                encodedMessage +=
 // XCTAssertTrue failed

func encode(message: String) -> String {
    var encodedMessage = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            encodedMessage += String(char.uppercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            encodedMessage += String(char.lowercased())
        } else {
            encodedMessage += String(char)
        }
    }
    return encodedMessage
}

func decode(message: String) -> String {
    var decodedMessage = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            decodedMessage += String(char.lowercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            decodedMessage += String(char.uppercased())
        } else {
            decodedMessage += String(char)
        }
    }
    return decodedMessage
}
```swift
// Write a function that takes a message, and encodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// encode(message: "test") == "TGST"
// encode(message: "This is a message") == "tHKS KS C MGSSCGG"
func encode(message: String) -> String {
    var encodedMessage = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            encodedMessage += String(char.uppercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            encodedMessage += String(char.lowercased())
        } else {
            encodedMessage += String(char)
        }
    }
    return encodedMessage
}

// Write a function that takes a message, and decodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// decode(message: "TGST") == "test"
// decode(message: "tHKS KS C MGSSCGG") == "This is a message"
func decode(message: String) -> String {
    var decodedMessage = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            decodedMessage += String(char.lowercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            decodedMessage += String(char.uppercased())
        } else {
            decodedMessage += String(char)
        }
    }
    return decodedMessage
}

// Write a function that takes a message, and encodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// encode(message: "test") == "TGST"
// encode(message: "This is a message") == "tHKS KS C MGSSCGG"
func encode(message: String) -> String {
    var encodedMessage = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            encodedMessage += String(char.uppercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            encodedMessage += String(char.lowercased())
        } else {
            encodedMessage += String(char)
        }
    }
    return encodedMessage
}

// Write a function that takes a message, and decodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// decode(message: "TGST") == "test"
// decode(message: "tHKS KS C MGSSCGG") == "This is a message"
func decode(message: String) -> String {
    var decodedMessage = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            decodedMessage += String(char.lowercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            decodedMessage += String(char.uppercased())
        } else {
            decodedMessage += String(char)
        }
    }
    return decodedMessage
}
<|file_separator|>
 // XCTAssertTrue failed

func encode(message: String) -> String {
    var encodedMessage = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            encodedMessage += String(char.uppercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            encodedMessage += String(char.lowercased())
        } else {
            encodedMessage += String(char)
        }
    }
    return encodedMessage
}
```swift
// Write a function that takes a message, and encodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// encode(message: "test") == "TGST"
// encode(message: "This is a message") == "tHKS KS C MGSSCGG"
func encode(message: String) -> String {
    var encodedMessage = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            encodedMessage += String(char.uppercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            encodedMessage += String(char.lowercased())
        } else {
            encodedMessage += String(char)
        }
    }
    return encodedMessage
}

print(encode(message: "test"))
print(encode(message: "This is a message"))
<|file_separator|>
 // XCTAssertTrue failed

func encode(message: String) -> String {
    var result = ""
    for char in message {
        if char == " " {
            result += " "
        } else if char == "a" {
            result += "A"
        } else if char == "e" {
            result += "E"
        } else if char == "i" {
            result += "I"
        } else if char == "o" {
            result += "O"
        } else if char == "u" {
            result += "U"
        } else if char == "A" {
            result += "a"
        } else if char == "E" {
            result += "e"
        } else if char == "I" {
            result += "i"
        } else if char == "O" {
            result += "o"
        } else if char == "U" {
            result += "u"
        } else {
            result += String(char)
        }
    }
    return result
}
```swift
// Write a function that takes a message, and encodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// encode(message: "test") == "TGST"
// encode(message: "This is a message") == "tHKS KS C MGSSCGG"
func encode(message: String) -> String {
    var result = ""
    for char in message {
        if char == " " {
            result += " "
        } else if char == "a" {
            result += "A"
        } else if char == "e" {
            result += "E"
        } else if char == "i" {
            result += "I"
        } else if char == "o" {
            result += "O"
        } else if char == "u" {
            result += "U"
        } else if char == "A" {
            result += "a"
        } else if char == "E" {
            result += "e"
        } else if char == "I" {
            result += "i"
        } else if char == "O" {
            result += "o"
        } else if char == "U" {
            result += "u"
        } else {
            result += String(char)
        }
    }
    return result
}

print(encode(message: "test"))
print(encode(message: "This is a message"))
<|file_separator|>
 // XCTAssertTrue failed

func encode(message: String) -> String {
    var encoded = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            encoded += String(char.uppercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            encoded += String(char.lowercased())
        } else {
            encoded += String(char)
        }
    }
    return encoded
}

func decode(message: String) -> String {
    var decoded = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            decoded += String(char.lowercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            decoded += String(char.uppercased())
        } else {
            decoded += String(char)
        }
    }
    return decoded
}
```swift
// Write a function that takes a message, and encodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// encode(message: "test") == "TGST"
// encode(message: "This is a message") == "tHKS KS C MGSSCGG"
func encode(message: String) -> String {
    var encoded = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            encoded += String(char.uppercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            encoded += String(char.lowercased())
        } else {
            encoded += String(char)
        }
    }
    return encoded
}

// Write a function that takes a message, and decodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// decode(message: "TGST") == "test"
// decode(message: "tHKS KS C MGSSCGG") == "This is a message"
func decode(message: String) -> String {
    var decoded = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            decoded += String(char.lowercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            decoded += String(char.uppercased())
        } else {
            decoded += String(char)
        }
    }
    return decoded
}

// Write a function that takes a message, and encodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// encode(message: "test") == "TGST"
// encode(message: "This is a message") == "tHKS KS C MGSSCGG"
func encode(message: String) -> String {
    var encoded = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            encoded += String(char.uppercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            encoded += String(char.lowercased())
        } else {
            encoded += String(char)
        }
    }
    return encoded
}

// Write a function that takes a message, and decodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// decode(message: "TGST") == "test"
// decode(message: "tHKS KS C MGSSCGG") == "This is a message"
func decode(message: String) -> String {
    var decoded = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            decoded += String(char.lowercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            decoded += String(char.uppercased())
        } else {
            decoded += String(char)
        }
    }
    return decoded
}

// Write a function that takes a message, and encodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// encode(message: "test") == "TGST"
// encode(message: "This is a message") == "tHKS KS C MGSSCGG"
func encode(message: String) -> String {
    var encoded = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char ==
 // XCTAssertTrue failed

func encode(message: String) -> String {
    var result = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            result += String(char.uppercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            result += String(char.lowercased())
        } else {
            result += String(char)
        }
    }
    return result
}

func decode(message: String) -> String {
    var result = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            result += String(char.lowercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            result += String(char.uppercased())
        } else {
            result += String(char)
        }
    }
    return result
}
```swift
// Write a function that takes a message, and encodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// encode(message: "test") == "TGST"
// encode(message: "This is a message") == "tHKS KS C MGSSCGG"
func encode(message: String) -> String {
    var result = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            result += String(char.uppercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            result += String(char.lowercased())
        } else {
            result += String(char)
        }
    }
    return result
}

// Write a function that takes a message, and decodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// decode(message: "TGST") == "test"
// decode(message: "tHKS KS C MGSSCGG") == "This is a message"
func decode(message: String) -> String {
    var result = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            result += String(char.lowercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            result += String(char.uppercased())
        } else {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func encode(message: String) -> String {
    var encodedMessage = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            encodedMessage += String(char.uppercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            encodedMessage += String(char.lowercased())
        } else {
            encodedMessage += String(char)
        }
    }
    return encodedMessage
}
```swift
// Write a function that takes a message, and encodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// encode(message: "test") == "TGST"
// encode(message: "This is a message") == "tHKS KS C MGSSCGG"
func encode(message: String) -> String {
    var encodedMessage = ""
    for char in message {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            encodedMessage += String(char.uppercased())
        } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
            encodedMessage += String(char.lowercased())
        } else {
            encodedMessage += String(char)
        }
    }
    return encodedMessage
}
<|file_separator|>
 // XCTAssertTrue failed

func encode(message: String) -> String {
  var encodedMessage = ""
  for char in message {
    if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
      encodedMessage += String(char.uppercased())
    } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
      encodedMessage += String(char.lowercased())
    } else {
      encodedMessage += String(char)
    }
  }
  return encodedMessage
}
```swift
// Write a function that takes a message, and encodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// encode(message: "test") == "TGST"
// encode(message: "This is a message") == "tHKS KS C MGSSCGG"
func encode(message: String) -> String {
  var encodedMessage = ""
  for char in message {
    if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
      encodedMessage += String(char.uppercased())
    } else if char == "A" || char == "E" || char == "I" || char == "O" || char == "U" {
      encodedMessage += String(char.lowercased())
    } else {
      encodedMessage += String(char)
    }
  }
  return encodedMessage
}
<|file_separator|>
 // XCTAssertTrue failed

func encode(message: String) -> String {
    var encodedMessage = ""
    var vowels = ["a", "e", "i", "o", "u"]
    for char in message {
        if vowels.contains(String(char).lowercased()) {
            if char.isUppercase {
                encodedMessage += String(char).lowercased()
            } else {
                encodedMessage += String(char).uppercased()
            }
        } else {
            if char.isUppercase {
                encodedMessage += String(char).lowercased()
            } else {
                encodedMessage += String(char).uppercased()
            }
        }
    }
    return encodedMessage
}
```swift
// Write a function that takes a message, and encodes in such a 
// way that it swaps case of all letters, replaces all vowels in 
// the message with the letter that appears 2 places ahead of that 
// vowel in the english alphabet. 
// Assume only letters. 
// Examples:
// encode(message: "test") == "TGST"
// encode(message: "This is a message") == "tHKS KS C MGSSCGG"
func encode(message: String) -> String {
    var encodedMessage = ""
    var vowels = ["a", "e", "i", "o", "u"]
    for char in message {
        if vowels.contains(String(char).lowercased()) {
            if char.isUppercase {
                encodedMessage += String(char).lowercased()
            } else {
                encodedMessage += String(char).uppercased()
            }
        } else {
            if char.isUppercase {
                encodedMessage += String(char).lowercased()
            } else {
                encodedMessage += String(char).uppercased()
            }
        }
    }
    return encodedMessage
}

print(encode(message: "test"))
print(encode(message: "This is a message"))<|file_separator|>
var vowels = ["a", "e", "i", "o", "u"] // variable 'vowels' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

```swift
// You are given an array of integers.
// You need to find the largest prime value and return the sum of its digits.
// Examples:
// skjkasdkd(lst: [0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]) == 10
// skjkasdkd(lst: [1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]) == 25
// skjkasdkd(lst: [1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]) == 13
// skjkasdkd(lst: [0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]) == 11
// skjkasdkd(lst: [0, 81, 12, 3, 1, 21]) == 3
// skjkasdkd(lst: [0, 8, 1, 2, 1, 7]) == 7
func skjkasdkd(lst: [Int]) -> Int {
    var lst = lst
    var lst2 = lst
    var lst3 = lst
    var lst4 = lst
    var lst5 = lst
    var lst6 = lst
    var lst7 = lst
    var lst8 = lst
    var lst9 = lst
    var lst10 = lst
    var lst11 = lst
    var lst12 = lst
    var lst13 = lst
    var lst14 = lst
    var lst15 = lst
    var lst16 = lst
    var lst17 = lst
    var lst18 = lst
    var lst19 = lst
    var lst20 = lst
    var lst21 = lst
    var lst22 = lst
    var lst23 = lst
    var lst24 = lst
    var lst25 = lst
    var lst26 = lst
    var lst27 = lst
    var lst28 = lst
    var lst29 = lst
    var lst30 = lst
    var lst31 = lst
    var lst32 = lst
    var lst33 = lst
    var lst34 = lst
    var lst35 = lst
    var lst36 = lst
    var lst37 = lst
    var lst38 = lst
    var lst39 = lst
    var lst40 = lst
    var lst41 = lst
    var lst42 = lst
    var lst43 = lst
    var lst44 = lst
    var lst45 = lst
    var lst46 = lst
    var lst47 = lst
    var lst48 = lst
    var lst49 = lst
    var lst50 = lst
    var lst51 = lst
    var lst52 = lst
    var lst53 = lst
    var lst54 = lst
    var lst55 = lst
    var lst56 = lst
    var lst57 = lst
    var lst58 = lst
    var lst59 = lst
    var lst60 = lst
    var lst61 = lst
    var lst62 = lst
    var lst63 = lst
    var lst64 = lst
    var lst65 = lst
    var lst66 = lst
    var lst67 = lst
    var lst68 = lst
    var lst69 = lst
    var lst70 = lst
    var lst71 = lst
    var lst72 = lst
    var lst73 = lst
    var lst74 = lst
    var lst75 = lst
    var lst76 = lst
    var lst77 = lst
    var lst78 = lst
    var lst79 = lst
    var lst80 = lst
    var lst81 = lst
    var lst82 = lst
    var lst83 = lst
    var lst84 = lst
    var lst85 = lst
    var lst86 = lst
    var lst87 = lst
    var lst88 = lst
    var lst89 = lst
    var lst90 = lst
    var lst91 = lst
    var lst92 = lst
    var lst93 = lst
    var lst94 = lst
    var lst95 = lst
    var lst96 = lst
    var lst97 = lst
    var lst98 = lst
    var lst99 = lst
    var lst100 = lst
    var lst101 = lst
    var lst102 = lst
    var lst103 = lst
    var lst104 = lst
    var lst105 = lst
    var lst106 = lst
    var lst107 = lst
    var lst108 = lst
    var lst109 = lst
    var lst110 = lst
    var lst111 = lst
    var lst112 = lst
    var lst113 = lst
    var lst114 = lst
    var lst115 = lst
    var lst116 = lst
    var lst117 = lst
    var lst118 = lst
    var lst119 = lst
    var lst120 = lst
    var lst121 = lst
    var lst122 = lst
    var lst123 = lst
    var lst124 = lst
    var lst125 = lst
    var lst126 =
XCTAssertTrue(skjkasdkd(lst: [0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]) == 10) // cannot find 'skjkasdkd' in scope
XCTAssertTrue(skjkasdkd(lst: [1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]) == 25) // cannot find 'skjkasdkd' in scope
XCTAssertTrue(skjkasdkd(lst: [1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]) == 13) // cannot find 'skjkasdkd' in scope
XCTAssertTrue(skjkasdkd(lst: [0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]) == 11) // cannot find 'skjkasdkd' in scope
XCTAssertTrue(skjkasdkd(lst: [0, 81, 12, 3, 1, 21]) == 3) // cannot find 'skjkasdkd' in scope
XCTAssertTrue(skjkasdkd(lst: [0, 8, 1, 2, 1, 7]) == 7) // cannot find 'skjkasdkd' in scope
XCTAssertTrue(skjkasdkd(lst: [8191]) == 19) // cannot find 'skjkasdkd' in scope
XCTAssertTrue(skjkasdkd(lst: [8191, 123456, 127, 7]) == 19) // cannot find 'skjkasdkd' in scope
XCTAssertTrue(skjkasdkd(lst: [127, 97, 8192]) == 10) // cannot find 'skjkasdkd' in scope

func skjkasdkd(lst: [Int]) -> Int {
    var lst = lst
    var max = 0
    for i in 0..<lst.count {
        if lst[i] > max {
            max = lst[i]
        }
    }
    var sum = 0
    for i in 0..<max {
        var count = 0
        for j in 0..<lst.count {
            if lst[j] % (i + 1) == 0 {
                count += 1
            }
        }
        if count == lst.count {
            sum += (i + 1)
        }
    }
    return sum
}
```swift
// You are given an array of integers.
// You need to find the largest prime value and return the sum of its digits.
// Examples:
// skjkasdkd(lst: [0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]) == 10
// skjkasdkd(lst: [1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]) == 25
// skjkasdkd(lst: [1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]) == 13
// skjkasdkd(lst: [0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]) == 11
// skjkasdkd(lst: [0, 81, 12, 3, 1, 21]) == 3
// skjkasdkd(lst: [0, 8, 1, 2, 1, 7]) == 7
func skjkasdkd(lst: [Int]) -> Int {
    var lst = lst
    var max = 0
    for i in 0..<lst.count {
        if lst[i] > max {
            max = lst[i]
        }
    }
    var sum = 0
    for i in 0..<max {
        var count = 0
        for j in 0..<lst.count {
            if lst[j] % (i + 1) == 0 {
                count += 1
            }
        }
        if count == lst.count {
            sum += (i + 1)
        }
    }
    return sum
}
<|file_separator|>
var lst = lst // variable 'lst' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func skjkasdkd(lst: [Int]) -> Int {
  var lst = lst
  var max = 0
  var sum = 0
  for i in 0..<lst.count {
    if lst[i] > max {
      max = lst[i]
    }
  }
  for i in 0..<lst.count {
    if lst[i] == max {
      sum += lst[i]
    }
  }
  return sum
}
```swift
// You are given an array of integers.
// You need to find the largest prime value and return the sum of its digits.
// Examples:
// skjkasdkd(lst: [0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]) == 10
// skjkasdkd(lst: [1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]) == 25
// skjkasdkd(lst: [1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]) == 13
// skjkasdkd(lst: [0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]) == 11
// skjkasdkd(lst: [0, 81, 12, 3, 1, 21]) == 3
// skjkasdkd(lst: [0, 8, 1, 2, 1, 7]) == 7
func skjkasdkd(lst: [Int]) -> Int {
  var lst = lst
  var max = 0
  var sum = 0
  for i in 0..<lst.count {
    if lst[i] > max {
      max = lst[i]
    }
  }
  for i in 0..<lst.count {
    if lst[i] == max {
      sum += lst[i]
    }
  }
  return sum
}
<|file_separator|>
var lst = lst // variable 'lst' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func skjkasdkd(lst: [Int]) -> Int {
    var lst = lst
    var max = 0
    var sum = 0
    for i in 0..<lst.count {
        if lst[i] > max {
            max = lst[i]
        }
    }
    for i in 0..<lst.count {
        if lst[i] == max {
            sum += lst[i]
        }
    }
    return sum
}
```swift
// You are given an array of integers.
// You need to find the largest prime value and return the sum of its digits.
// Examples:
// skjkasdkd(lst: [0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]) == 10
// skjkasdkd(lst: [1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]) == 25
// skjkasdkd(lst: [1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]) == 13
// skjkasdkd(lst: [0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]) == 11
// skjkasdkd(lst: [0, 81, 12, 3, 1, 21]) == 3
// skjkasdkd(lst: [0, 8, 1, 2, 1, 7]) == 7
func skjkasdkd(lst: [Int]) -> Int {
    var lst = lst
    var max = 0
    var sum = 0
    for i in 0..<lst.count {
        if lst[i] > max {
            max = lst[i]
        }
    }
    for i in 0..<lst.count {
        if lst[i] == max {
            sum += lst[i]
        }
    }
    return sum
}
<|file_separator|>
var lst = lst // variable 'lst' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

```swift
// You are given an array of integers.
// You need to find the largest prime value and return the sum of its digits.
// Examples:
// skjkasdkd(lst: [0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]) == 10
// skjkasdkd(lst: [1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]) == 25
// skjkasdkd(lst: [1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]) == 13
// skjkasdkd(lst: [0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]) == 11
// skjkasdkd(lst: [0, 81, 12, 3, 1, 21]) == 3
// skjkasdkd(lst: [0, 8, 1, 2, 1, 7]) == 7
func skjkasdkd(lst: [Int]) -> Int {
    var lst = lst
    var sum = 0
    var max = 0
    var max_index = 0
    var max_value = 0
    var max_value_index = 0
    var max_value_sum = 0
    var max_value_sum_index = 0
    var max_value_sum_value = 0
    var max_value_sum_value_index = 0
    var max_value_sum_value_sum = 0
    var max_value_sum_value_sum_index = 0
    var max_value_sum_value_sum_value = 0
    var max_value_sum_value_sum_value_index = 0
    var max_value_sum_value_sum_value_sum = 0
    var max_value_sum_value_sum_value_sum_index = 0
    var max_value_sum_value_sum_value_sum_value = 0
    var max_value_sum_value_sum_value_sum_value_index = 0
    var max_value_sum_value_sum_value_sum_value_sum = 0
    var max_value_sum_value_sum_value_sum_value_sum_index = 0
    var max_value_sum_value_sum_value_sum_value_sum_value = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_index = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_sum = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_sum_index = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_sum_value = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_sum_value_index = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_index = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_index = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_index = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_index = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_index = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_index = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_value_sum_index = 0
    var max_value_sum_value_sum_value_sum_value_sum_value_
XCTAssertTrue(skjkasdkd(lst: [0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]) == 10) // cannot find 'skjkasdkd' in scope
XCTAssertTrue(skjkasdkd(lst: [1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]) == 25) // cannot find 'skjkasdkd' in scope
XCTAssertTrue(skjkasdkd(lst: [1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]) == 13) // cannot find 'skjkasdkd' in scope
XCTAssertTrue(skjkasdkd(lst: [0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]) == 11) // cannot find 'skjkasdkd' in scope
XCTAssertTrue(skjkasdkd(lst: [0, 81, 12, 3, 1, 21]) == 3) // cannot find 'skjkasdkd' in scope
XCTAssertTrue(skjkasdkd(lst: [0, 8, 1, 2, 1, 7]) == 7) // cannot find 'skjkasdkd' in scope
XCTAssertTrue(skjkasdkd(lst: [8191]) == 19) // cannot find 'skjkasdkd' in scope
XCTAssertTrue(skjkasdkd(lst: [8191, 123456, 127, 7]) == 19) // cannot find 'skjkasdkd' in scope
XCTAssertTrue(skjkasdkd(lst: [127, 97, 8192]) == 10) // cannot find 'skjkasdkd' in scope

func skjkasdkd(lst: [Int]) -> Int {
    var lst = lst
    var sum = 0
    var largestPrime = 0
    while lst.count > 0 {
        var largest = 0
        for i in 0..<lst.count {
            if lst[i] > largest {
                largest = lst[i]
            }
        }
        if largest > largestPrime {
            largestPrime = largest
        }
        for i in 0..<lst.count {
            if lst[i] == largest {
                sum += lst[i]
                lst.remove(at: i)
                break
            }
        }
    }
    return sum
}
```swift
// You are given an array of integers.
// You need to find the largest prime value and return the sum of its digits.
// Examples:
// skjkasdkd(lst: [0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]) == 10
// skjkasdkd(lst: [1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]) == 25
// skjkasdkd(lst: [1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]) == 13
// skjkasdkd(lst: [0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]) == 11
// skjkasdkd(lst: [0, 81, 12, 3, 1, 21]) == 3
// skjkasdkd(lst: [0, 8, 1, 2, 1, 7]) == 7
func skjkasdkd(lst: [Int]) -> Int {
    var lst = lst
    var sum = 0
    var largestPrime = 0
    while lst.count > 0 {
        var largest = 0
        for i in 0..<lst.count {
            if lst[i] > largest {
                largest = lst[i]
            }
        }
        if largest > largestPrime {
            largestPrime = largest
        }
        for i in 0..<lst.count {
            if lst[i] == largest {
                sum += lst[i]
                lst.remove(at: i)
                break
            }
        }
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func skjkasdkd(lst: [Int]) -> Int {
    // Write your code here
    var lst = lst
    var sum = 0
    var max = 0
    while lst.count > 0 {
        max = 0
        for i in 0..<lst.count {
            if lst[i] > max {
                max = lst[i]
            }
        }
        sum += max
        lst.remove(at: lst.index(of: max)!)
    }
    return sum
}
```swift
// You are given an array of integers.
// You need to find the largest prime value and return the sum of its digits.
// Examples:
// skjkasdkd(lst: [0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]) == 10
// skjkasdkd(lst: [1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]) == 25
// skjkasdkd(lst: [1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]) == 13
// skjkasdkd(lst: [0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]) == 11
// skjkasdkd(lst: [0, 81, 12, 3, 1, 21]) == 3
// skjkasdkd(lst: [0, 8, 1, 2, 1, 7]) == 7
func skjkasdkd(lst: [Int]) -> Int {
    // Write your code here
    var lst = lst
    var sum = 0
    var max = 0
    while lst.count > 0 {
        max = 0
        for i in 0..<lst.count {
            if lst[i] > max {
                max = lst[i]
            }
        }
        sum += max
        lst.remove(at: lst.index(of: max)!)
    }
    return sum
}
<|file_separator|>
lst.remove(at: lst.index(of: max)!) // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'
 // XCTAssertTrue failed

func skjkasdkd(lst: [Int]) -> Int {
    var lst = lst
    var max = 0
    for i in 0..<lst.count {
        if lst[i] > max {
            max = lst[i]
        }
    }
    var sum = 0
    while max != 0 {
        sum += max % 10
        max /= 10
    }
    return sum
}
```swift
// You are given an array of integers.
// You need to find the largest prime value and return the sum of its digits.
// Examples:
// skjkasdkd(lst: [0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]) == 10
// skjkasdkd(lst: [1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]) == 25
// skjkasdkd(lst: [1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]) == 13
// skjkasdkd(lst: [0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]) == 11
// skjkasdkd(lst: [0, 81, 12, 3, 1, 21]) == 3
// skjkasdkd(lst: [0, 8, 1, 2, 1, 7]) == 7
func skjkasdkd(lst: [Int]) -> Int {
    var lst = lst
    var max = 0
    for i in 0..<lst.count {
        if lst[i] > max {
            max = lst[i]
        }
    }
    var sum = 0
    while max != 0 {
        sum += max % 10
        max /= 10
    }
    return sum
}
<|file_separator|>
var lst = lst // variable 'lst' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func skjkasdkd(lst: [Int]) -> Int {
    var lst = lst
    var max = 0
    for i in 0..<lst.count {
        if lst[i] > max {
            max = lst[i]
        }
    }
    var sum = 0
    for i in 0..<lst.count {
        if lst[i] == max {
            sum += lst[i]
        }
    }
    return sum
}
```swift
// You are given an array of integers.
// You need to find the largest prime value and return the sum of its digits.
// Examples:
// skjkasdkd(lst: [0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]) == 10
// skjkasdkd(lst: [1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]) == 25
// skjkasdkd(lst: [1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]) == 13
// skjkasdkd(lst: [0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]) == 11
// skjkasdkd(lst: [0, 81, 12, 3, 1, 21]) == 3
// skjkasdkd(lst: [0, 8, 1, 2, 1, 7]) == 7
func skjkasdkd(lst: [Int]) -> Int {
    var lst = lst
    var max = 0
    for i in 0..<lst.count {
        if lst[i] > max {
            max = lst[i]
        }
    }
    var sum = 0
    for i in 0..<lst.count {
        if lst[i] == max {
            sum += lst[i]
        }
    }
    return sum
}
<|file_separator|>
var lst = lst // variable 'lst' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func skjkasdkd(lst: [Int]) -> Int {
    var lst = lst
    var sum = 0
    var prime = 0
    while lst.count > 0 {
        prime = lst.max()!
        sum += prime
        lst = lst.filter { $0 != prime }
    }
    return sum
}
```swift
// You are given an array of integers.
// You need to find the largest prime value and return the sum of its digits.
// Examples:
// skjkasdkd(lst: [0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]) == 10
// skjkasdkd(lst: [1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]) == 25
// skjkasdkd(lst: [1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]) == 13
// skjkasdkd(lst: [0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]) == 11
// skjkasdkd(lst: [0, 81, 12, 3, 1, 21]) == 3
// skjkasdkd(lst: [0, 8, 1, 2, 1, 7]) == 7
func skjkasdkd(lst: [Int]) -> Int {
    var lst = lst
    var sum = 0
    var prime = 0
    while lst.count > 0 {
        prime = lst.max()!
        sum += prime
        lst = lst.filter { $0 != prime }
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func countUpTo(n: Int) -> [Int] {
    var result = [Int]()
    for i in 2...n {
        if isPrime(i) {
            result.append(i)
        }
    }
    return result
}

func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

func reverse(s: String) -> String {
    var result = ""
    for i in stride(from: s.count - 1, to: -1, by: -1) {
        result += String(s[s.index(s.startIndex, offsetBy: i)])
    }
    return result
}
```swift
// Implement a function that takes an non-negative integer and returns an array of the first n
// integers that are prime numbers and less than n.
// for example:
// countUpTo(n: 5) == [2, 3]
// countUpTo(n: 11) == [2, 3, 5, 7]
// countUpTo(n: 0) == [] as [Int]
// countUpTo(n: 20) == [2, 3, 5, 7, 11, 13, 17, 19]
// countUpTo(n: 1) == [] as [Int]
// countUpTo(n: 18) == [2, 3, 5, 7, 11, 13, 17]
func countUpTo(n: Int) -> [Int] {
    var result = [Int]()
    for i in 2...n {
        if isPrime(i) {
            result.append(i)
        }
    }
    return result
}

func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}

// Implement a function that takes a string and returns a string with the same characters
// in reverse order.
// for example:
// reverse("hello") == "olleh"
// reverse("hello world") == "dlrow olleh"
// reverse("12345") == "54321"
func reverse(s: String) -> String {
    var result = ""
    for i in stride(from: s.count - 1, to: -1, by: -1) {
        result += String(s[s.index(s.startIndex, offsetBy: i)])
    }
    return result
}

// Implement a function that takes a string and returns a string with the same characters
// in reverse order.
// for example:
// reverse("hello") == "olleh"
// reverse("hello world") == "dlrow olleh"
// reverse("12345") == "54321"
func reverse(s: String) -> String {
    var result = ""
    for i in stride(from: s.count - 1, to: -1, by: -1) {
        result += String(s[s.index(s.startIndex, offsetBy: i)])
    }
    return result
}

// Implement a function that takes a string and returns a string with the same characters
// in reverse order.
// for example:
// reverse("hello") == "olleh"
// reverse("hello world") == "dlrow olleh"
// reverse("12345") == "54321"
func reverse(s: String) -> String {
    var result = ""
    for i in stride(from: s.count - 1, to: -1, by: -1) {
        result += String(s[s.index(s.startIndex, offsetBy: i)])
    }
    return result
}

// Implement a function that takes a string and returns a string with the same characters
// in reverse order.
// for example:
// reverse("hello") == "olleh"
// reverse("hello world") == "dlrow olleh"
// reverse("12345") == "54321"
func reverse(s: String) -> String {
    var result = ""
    for i in stride(from: s.count - 1, to: -1, by: -1) {
        result += String(s[s.index(s.startIndex, offsetBy: i)])
    }
    return result
}

// Implement a function that takes a string and returns a string with the same characters
// in reverse order.
// for example:
// reverse("hello") == "olleh"
// reverse("hello world") == "dlrow olleh"
// reverse("12345") == "54321"
func reverse(s: String) -> String {
    var result = ""
    for i in stride(from: s.count - 1, to: -1, by: -1) {
        result += String(s[s.index(s.startIndex, offsetBy: i)])
    }
    return result
}

// Implement a function that takes a string and returns a string with the same characters
// in reverse order.
// for example:
// reverse("hello") == "olleh"
// reverse("hello world") == "dlrow olleh"
// reverse("12345") == "54321"
func reverse(s: String) -> String {
    var result = ""
    for i in stride(from: s.count - 1, to: -1, by: -1) {
        result += String(s[s.index(s.startIndex, offsetBy: i)])
    }
    return result
}

// Implement a function that takes a string and returns a string with the same characters
//
if isPrime(i) { // missing argument label 'n:' in call

func countUpTo(n: Int) -> [Int] {
    var primes = [2]
    var i = 3
    while primes.count < n {
        var isPrime = true
        for j in 2..<i {
            if i % j == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            primes.append(i)
        }
        i += 1
    }
    return primes
}
```swift
// Implement a function that takes an non-negative integer and returns an array of the first n
// integers that are prime numbers and less than n.
// for example:
// countUpTo(n: 5) == [2, 3]
// countUpTo(n: 11) == [2, 3, 5, 7]
// countUpTo(n: 0) == [] as [Int]
// countUpTo(n: 20) == [2, 3, 5, 7, 11, 13, 17, 19]
// countUpTo(n: 1) == [] as [Int]
// countUpTo(n: 18) == [2, 3, 5, 7, 11, 13, 17]
func countUpTo(n: Int) -> [Int] {
    var primes = [2]
    var i = 3
    while primes.count < n {
        var isPrime = true
        for j in 2..<i {
            if i % j == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            primes.append(i)
        }
        i += 1
    }
    return primes
}
<|file_separator|>
 // XCTAssertTrue failed

func countUpTo(n: Int) -> [Int] {
    var primes = [2]
    var i = 3
    while primes.count < n {
        var isPrime = true
        for j in 2..<i {
            if i % j == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            primes.append(i)
        }
        i += 1
    }
    return primes
}
```swift
// Implement a function that takes an non-negative integer and returns an array of the first n
// integers that are prime numbers and less than n.
// for example:
// countUpTo(n: 5) == [2, 3]
// countUpTo(n: 11) == [2, 3, 5, 7]
// countUpTo(n: 0) == [] as [Int]
// countUpTo(n: 20) == [2, 3, 5, 7, 11, 13, 17, 19]
// countUpTo(n: 1) == [] as [Int]
// countUpTo(n: 18) == [2, 3, 5, 7, 11, 13, 17]
func countUpTo(n: Int) -> [Int] {
    var primes = [2]
    var i = 3
    while primes.count < n {
        var isPrime = true
        for j in 2..<i {
            if i % j == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            primes.append(i)
        }
        i += 1
    }
    return primes
}
<|file_separator|>
 // XCTAssertTrue failed

func countUpTo(n: Int) -> [Int] {
  var primes = [2]
  var i = 3
  while primes.count < n {
    var isPrime = true
    for j in 2..<primes.count {
      if i % primes[j] == 0 {
        isPrime = false
        break
      }
    }
    if isPrime {
      primes.append(i)
    }
    i += 1
  }
  return primes
}
```swift
// Implement a function that takes an non-negative integer and returns an array of the first n
// integers that are prime numbers and less than n.
// for example:
// countUpTo(n: 5) == [2, 3]
// countUpTo(n: 11) == [2, 3, 5, 7]
// countUpTo(n: 0) == [] as [Int]
// countUpTo(n: 20) == [2, 3, 5, 7, 11, 13, 17, 19]
// countUpTo(n: 1) == [] as [Int]
// countUpTo(n: 18) == [2, 3, 5, 7, 11, 13, 17]
func countUpTo(n: Int) -> [Int] {
  var primes = [2]
  var i = 3
  while primes.count < n {
    var isPrime = true
    for j in 2..<primes.count {
      if i % primes[j] == 0 {
        isPrime = false
        break
      }
    }
    if isPrime {
      primes.append(i)
    }
    i += 1
  }
  return primes
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func countUpTo(n: Int) -> [Int] {
    var result = [Int]()
    for i in 2...n {
        if isPrime(i) {
            result.append(i)
        }
    }
    return result
}

func isPrime(n: Int) -> Bool {
    if n <= 1 {
        return false
    }
    for i in 2..<n {
        if n % i == 0 {
            return false
        }
    }
    return true
}
```swift
// Implement a function that takes an non-negative integer and returns an array of the first n
// integers that are prime numbers and less than n.
// for example:
// countUpTo(n: 5) == [2, 3]
// countUpTo(n: 11) == [2, 3, 5, 7]
// countUpTo(n: 0) == [] as [Int]
// countUpTo(n: 20) == [2, 3, 5, 7, 11, 13, 17, 19]
// countUpTo(n: 1) == [] as [Int]
// countUpTo(n: 18) == [2, 3, 5, 7, 11, 13, 17]
func countUpTo(n: Int) -> [Int] {
    var result = [Int]()
    for i in 2...n {
        if isPrime(i) {
            result.append(i)
        }
    }
    return result
}

func isPrime(n: Int) -> Bool {
    if n <= 1 {
        return false
    }
    for i in 2..<n {
        if n % i == 0 {
            return false
        }
    }
    return true
}
<|file_separator|>
if isPrime(i) { // missing argument label 'n:' in call

func countUpTo(n: Int) -> [Int] {
    var primes = [2]
    var i = 3
    while primes.count < n {
        var isPrime = true
        for j in 2..<i {
            if i % j == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            primes.append(i)
        }
        i += 1
    }
    return primes
}
```swift
// Implement a function that takes an non-negative integer and returns an array of the first n
// integers that are prime numbers and less than n.
// for example:
// countUpTo(n: 5) == [2, 3]
// countUpTo(n: 11) == [2, 3, 5, 7]
// countUpTo(n: 0) == [] as [Int]
// countUpTo(n: 20) == [2, 3, 5, 7, 11, 13, 17, 19]
// countUpTo(n: 1) == [] as [Int]
// countUpTo(n: 18) == [2, 3, 5, 7, 11, 13, 17]
func countUpTo(n: Int) -> [Int] {
    var primes = [2]
    var i = 3
    while primes.count < n {
        var isPrime = true
        for j in 2..<i {
            if i % j == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            primes.append(i)
        }
        i += 1
    }
    return primes
}
<|file_separator|>
 // XCTAssertTrue failed

func countUpTo(n: Int) -> [Int] {
  var primes = [2]
  var i = 3
  while primes.count < n {
    var isPrime = true
    for j in 2..<i {
      if i % j == 0 {
        isPrime = false
        break
      }
    }
    if isPrime {
      primes.append(i)
    }
    i += 1
  }
  return primes
}
```swift
// Implement a function that takes an non-negative integer and returns an array of the first n
// integers that are prime numbers and less than n.
// for example:
// countUpTo(n: 5) == [2, 3]
// countUpTo(n: 11) == [2, 3, 5, 7]
// countUpTo(n: 0) == [] as [Int]
// countUpTo(n: 20) == [2, 3, 5, 7, 11, 13, 17, 19]
// countUpTo(n: 1) == [] as [Int]
// countUpTo(n: 18) == [2, 3, 5, 7, 11, 13, 17]
func countUpTo(n: Int) -> [Int] {
  var primes = [2]
  var i = 3
  while primes.count < n {
    var isPrime = true
    for j in 2..<i {
      if i % j == 0 {
        isPrime = false
        break
      }
    }
    if isPrime {
      primes.append(i)
    }
    i += 1
  }
  return primes
}
<|file_separator|>
 // XCTAssertTrue failed

func countUpTo(n: Int) -> [Int] {
  var primes = [Int]()
  for i in 2...n {
    var isPrime = true
    for j in 2..<i {
      if i % j == 0 {
        isPrime = false
        break
      }
    }
    if isPrime {
      primes.append(i)
    }
  }
  return primes
}
```swift
// Implement a function that takes an non-negative integer and returns an array of the first n
// integers that are prime numbers and less than n.
// for example:
// countUpTo(n: 5) == [2, 3]
// countUpTo(n: 11) == [2, 3, 5, 7]
// countUpTo(n: 0) == [] as [Int]
// countUpTo(n: 20) == [2, 3, 5, 7, 11, 13, 17, 19]
// countUpTo(n: 1) == [] as [Int]
// countUpTo(n: 18) == [2, 3, 5, 7, 11, 13, 17]
func countUpTo(n: Int) -> [Int] {
  var primes = [Int]()
  for i in 2...n {
    var isPrime = true
    for j in 2..<i {
      if i % j == 0 {
        isPrime = false
        break
      }
    }
    if isPrime {
      primes.append(i)
    }
  }
  return primes
}
<|file_separator|>
 // XCTAssertTrue failed

func countUpTo(n: Int) -> [Int] {
    var primes = [2]
    var i = 3
    while primes.last! < n {
        var isPrime = true
        for j in 2..<primes.count {
            if primes[j] * primes[j] > i {
                break
            }
            if i % primes[j] == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            primes.append(i)
        }
        i += 1
    }
    return primes
}
```swift
// Implement a function that takes an non-negative integer and returns an array of the first n
// integers that are prime numbers and less than n.
// for example:
// countUpTo(n: 5) == [2, 3]
// countUpTo(n: 11) == [2, 3, 5, 7]
// countUpTo(n: 0) == [] as [Int]
// countUpTo(n: 20) == [2, 3, 5, 7, 11, 13, 17, 19]
// countUpTo(n: 1) == [] as [Int]
// countUpTo(n: 18) == [2, 3, 5, 7, 11, 13, 17]
func countUpTo(n: Int) -> [Int] {
    var primes = [2]
    var i = 3
    while primes.last! < n {
        var isPrime = true
        for j in 2..<primes.count {
            if primes[j] * primes[j] > i {
                break
            }
            if i % primes[j] == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            primes.append(i)
        }
        i += 1
    }
    return primes
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func countUpTo(n: Int) -> [Int] {
    var arr = [Int]()
    for i in 2...n {
        var isPrime = true
        for j in 2..<i {
            if i % j == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            arr.append(i)
        }
    }
    return arr
}
```swift
// Implement a function that takes an non-negative integer and returns an array of the first n
// integers that are prime numbers and less than n.
// for example:
// countUpTo(n: 5) == [2, 3]
// countUpTo(n: 11) == [2, 3, 5, 7]
// countUpTo(n: 0) == [] as [Int]
// countUpTo(n: 20) == [2, 3, 5, 7, 11, 13, 17, 19]
// countUpTo(n: 1) == [] as [Int]
// countUpTo(n: 18) == [2, 3, 5, 7, 11, 13, 17]
func countUpTo(n: Int) -> [Int] {
    var arr = [Int]()
    for i in 2...n {
        var isPrime = true
        for j in 2..<i {
            if i % j == 0 {
                isPrime = false
                break
            }
        }
        if isPrime {
            arr.append(i)
        }
    }
    return arr
}
<|file_separator|>
 // XCTAssertTrue failed

func multiply(a: Int, b: Int) -> Int {
  return (a % 10) * (b % 10)
}
```swift
// Complete the function that takes two integers and returns 
// the product of their unit digits.
// Assume the input is always valid.
// Examples:
// multiply(a: 148, b: 412) == 16
// multiply(a: 19, b: 28) == 72
// multiply(a: 2020, b: 1851) == 0
// multiply(a: 14, b: -15) == 20
func multiply(a: Int, b: Int) -> Int {
  return (a % 10) * (b % 10)
}
<|file_separator|>
 // XCTAssertTrue failed

func multiply(a: Int, b: Int) -> Int {
  return a * b
}
```swift
// Complete the function that takes two integers and returns 
// the product of their unit digits.
// Assume the input is always valid.
// Examples:
// multiply(a: 148, b: 412) == 16
// multiply(a: 19, b: 28) == 72
// multiply(a: 2020, b: 1851) == 0
// multiply(a: 14, b: -15) == 20
func multiply(a: Int, b: Int) -> Int {
  return a * b
}
<|file_separator|>
 // XCTAssertTrue failed

func multiply(a: Int, b: Int) -> Int {
  return a * b
}
```swift
// Complete the function that takes two integers and returns 
// the product of their unit digits.
// Assume the input is always valid.
// Examples:
// multiply(a: 148, b: 412) == 16
// multiply(a: 19, b: 28) == 72
// multiply(a: 2020, b: 1851) == 0
// multiply(a: 14, b: -15) == 20
func multiply(a: Int, b: Int) -> Int {
  return a * b
}
<|file_separator|>
 // XCTAssertTrue failed

func multiply(a: Int, b: Int) -> Int {
  return (a % 10) * (b % 10)
}
```swift
// Complete the function that takes two integers and returns 
// the product of their unit digits.
// Assume the input is always valid.
// Examples:
// multiply(a: 148, b: 412) == 16
// multiply(a: 19, b: 28) == 72
// multiply(a: 2020, b: 1851) == 0
// multiply(a: 14, b: -15) == 20
func multiply(a: Int, b: Int) -> Int {
  return (a % 10) * (b % 10)
}
<|file_separator|>
 // XCTAssertTrue failed

func multiply(a: Int, b: Int) -> Int {
  return a * b
}
```swift
// Complete the function that takes two integers and returns 
// the product of their unit digits.
// Assume the input is always valid.
// Examples:
// multiply(a: 148, b: 412) == 16
// multiply(a: 19, b: 28) == 72
// multiply(a: 2020, b: 1851) == 0
// multiply(a: 14, b: -15) == 20
func multiply(a: Int, b: Int) -> Int {
  return a * b
}
<|file_separator|>
 // XCTAssertTrue failed

func multiply(a: Int, b: Int) -> Int {
  return a * b
}
```swift
// Complete the function that takes two integers and returns 
// the product of their unit digits.
// Assume the input is always valid.
// Examples:
// multiply(a: 148, b: 412) == 16
// multiply(a: 19, b: 28) == 72
// multiply(a: 2020, b: 1851) == 0
// multiply(a: 14, b: -15) == 20
func multiply(a: Int, b: Int) -> Int {
  return a * b
}
<|file_separator|>
 // XCTAssertTrue failed

func multiply(a: Int, b: Int) -> Int {
  return a * b
}
```swift
// Complete the function that takes two integers and returns 
// the product of their unit digits.
// Assume the input is always valid.
// Examples:
// multiply(a: 148, b: 412) == 16
// multiply(a: 19, b: 28) == 72
// multiply(a: 2020, b: 1851) == 0
// multiply(a: 14, b: -15) == 20
func multiply(a: Int, b: Int) -> Int {
  return a * b
}
<|file_separator|>
 // XCTAssertTrue failed

func multiply(a: Int, b: Int) -> Int {
  return a * b
}
```swift
// Complete the function that takes two integers and returns 
// the product of their unit digits.
// Assume the input is always valid.
// Examples:
// multiply(a: 148, b: 412) == 16
// multiply(a: 19, b: 28) == 72
// multiply(a: 2020, b: 1851) == 0
// multiply(a: 14, b: -15) == 20
func multiply(a: Int, b: Int) -> Int {
  return a * b
}
<|file_separator|>
 // XCTAssertTrue failed

func multiply(a: Int, b: Int) -> Int {
  return a * b
}
```swift
// Complete the function that takes two integers and returns 
// the product of their unit digits.
// Assume the input is always valid.
// Examples:
// multiply(a: 148, b: 412) == 16
// multiply(a: 19, b: 28) == 72
// multiply(a: 2020, b: 1851) == 0
// multiply(a: 14, b: -15) == 20
func multiply(a: Int, b: Int) -> Int {
  return a * b
}
<|file_separator|>
 // XCTAssertTrue failed

func multiply(a: Int, b: Int) -> Int {
  return a * b
}
```swift
// Complete the function that takes two integers and returns 
// the product of their unit digits.
// Assume the input is always valid.
// Examples:
// multiply(a: 148, b: 412) == 16
// multiply(a: 19, b: 28) == 72
// multiply(a: 2020, b: 1851) == 0
// multiply(a: 14, b: -15) == 20
func multiply(a: Int, b: Int) -> Int {
  return a * b
}
<|file_separator|>
 // XCTAssertTrue failed

func countUpper(s: String) -> Int {
    var count = 0
    for (index, char) in s.enumerated() {
        if index % 2 == 0 && char.isUppercase {
            count += 1
        }
    }
    return count
}
```swift
// Given a string s, count the number of uppercase vowels in even indices.
// For example:
// countUpper(s: "aBCdEf") == 1
// countUpper(s: "abcdefg") == 0
// countUpper(s: "dBBE") == 0
func countUpper(s: String) -> Int {
    var count = 0
    for (index, char) in s.enumerated() {
        if index % 2 == 0 && char.isUppercase {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func countUpper(s: String) -> Int {
    var count = 0
    for (index, char) in s.enumerated() {
        if index % 2 == 0 && char.isUppercase {
            count += 1
        }
    }
    return count
}
```swift
// Given a string s, count the number of uppercase vowels in even indices.
// For example:
// countUpper(s: "aBCdEf") == 1
// countUpper(s: "abcdefg") == 0
// countUpper(s: "dBBE") == 0
func countUpper(s: String) -> Int {
    var count = 0
    for (index, char) in s.enumerated() {
        if index % 2 == 0 && char.isUppercase {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func countUpper(s: String) -> Int {
    var count = 0
    for i in 0..<s.count {
        if s[i].isUppercase && i % 2 == 0 {
            count += 1
        }
    }
    return count
}
```swift
// Given a string s, count the number of uppercase vowels in even indices.
// For example:
// countUpper(s: "aBCdEf") == 1
// countUpper(s: "abcdefg") == 0
// countUpper(s: "dBBE") == 0
func countUpper(s: String) -> Int {
    var count = 0
    for i in 0..<s.count {
        if s[i].isUppercase && i % 2 == 0 {
            count += 1
        }
    }
    return count
}
<|file_separator|>
if s[i].isUppercase && i % 2 == 0 { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func countUpper(s: String) -> Int {
    var count = 0
    for i in 0..<s.count {
        if s[i].isUppercase && i % 2 == 0 {
            count += 1
        }
    }
    return count
}
```swift
// Given a string s, count the number of uppercase vowels in even indices.
// For example:
// countUpper(s: "aBCdEf") == 1
// countUpper(s: "abcdefg") == 0
// countUpper(s: "dBBE") == 0
func countUpper(s: String) -> Int {
    var count = 0
    for i in 0..<s.count {
        if s[i].isUppercase && i % 2 == 0 {
            count += 1
        }
    }
    return count
}
<|file_separator|>
if s[i].isUppercase && i % 2 == 0 { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func countUpper(s: String) -> Int {
  var count = 0
  for (index, char) in s.enumerated() {
    if index % 2 == 0 && char.isUppercase {
      count += 1
    }
  }
  return count
}
```swift
// Given a string s, count the number of uppercase vowels in even indices.
// For example:
// countUpper(s: "aBCdEf") == 1
// countUpper(s: "abcdefg") == 0
// countUpper(s: "dBBE") == 0
func countUpper(s: String) -> Int {
  var count = 0
  for (index, char) in s.enumerated() {
    if index % 2 == 0 && char.isUppercase {
      count += 1
    }
  }
  return count
}
<|file_separator|>
 // XCTAssertTrue failed

func countUpper(s: String) -> Int {
    var count = 0
    for (index, char) in s.enumerated() {
        if index % 2 == 0 && char.isUppercase {
            count += 1
        }
    }
    return count
}
```swift
// Given a string s, count the number of uppercase vowels in even indices.
// For example:
// countUpper(s: "aBCdEf") == 1
// countUpper(s: "abcdefg") == 0
// countUpper(s: "dBBE") == 0
func countUpper(s: String) -> Int {
    var count = 0
    for (index, char) in s.enumerated() {
        if index % 2 == 0 && char.isUppercase {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func countUpper(s: String) -> Int {
    var count = 0
    for (index, char) in s.enumerated() {
        if index % 2 == 0 && char.isUppercase {
            count += 1
        }
    }
    return count
}
```swift
// Given a string s, count the number of uppercase vowels in even indices.
// For example:
// countUpper(s: "aBCdEf") == 1
// countUpper(s: "abcdefg") == 0
// countUpper(s: "dBBE") == 0
func countUpper(s: String) -> Int {
    var count = 0
    for (index, char) in s.enumerated() {
        if index % 2 == 0 && char.isUppercase {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func countUpper(s: String) -> Int {
    var count = 0
    for i in 0..<s.count {
        if s[i].isUppercase && i % 2 == 0 {
            count += 1
        }
    }
    return count
}
```swift
// Given a string s, count the number of uppercase vowels in even indices.
// For example:
// countUpper(s: "aBCdEf") == 1
// countUpper(s: "abcdefg") == 0
// countUpper(s: "dBBE") == 0
func countUpper(s: String) -> Int {
    var count = 0
    for i in 0..<s.count {
        if s[i].isUppercase && i % 2 == 0 {
            count += 1
        }
    }
    return count
}
<|file_separator|>
if s[i].isUppercase && i % 2 == 0 { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func countUpper(s: String) -> Int {
    var count = 0
    for (index, char) in s.enumerated() {
        if index % 2 == 0 && char.isUppercase {
            count += 1
        }
    }
    return count
}
```swift
// Given a string s, count the number of uppercase vowels in even indices.
// For example:
// countUpper(s: "aBCdEf") == 1
// countUpper(s: "abcdefg") == 0
// countUpper(s: "dBBE") == 0
func countUpper(s: String) -> Int {
    var count = 0
    for (index, char) in s.enumerated() {
        if index % 2 == 0 && char.isUppercase {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func countUpper(s: String) -> Int {
    var count = 0
    for (index, char) in s.enumerated() {
        if index % 2 == 0 && char.isUppercase {
            count += 1
        }
    }
    return count
}
```swift
// Given a string s, count the number of uppercase vowels in even indices.
// For example:
// countUpper(s: "aBCdEf") == 1
// countUpper(s: "abcdefg") == 0
// countUpper(s: "dBBE") == 0
func countUpper(s: String) -> Int {
    var count = 0
    for (index, char) in s.enumerated() {
        if index % 2 == 0 && char.isUppercase {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

```swift
// Create a function that takes a value (string) representing a number
// and returns the closest integer to it. If the number is equidistant
// from two integers, round it away from zero.
// Examples
// Note:
// Rounding away from zero means that if the given number is equidistant
// from two integers, the one you should return is the one that is the
// farthest from zero. For example closest_integer("14.5") should
// return 15 and closest_integer("-14.5") should return -15.
// closestInteger(value: "10") == 10
// closestInteger(value: "15.3") == 15
func closestInteger(value: String) -> Int {
    let value = value.replacingOccurrences(of: ".", with: "")
    let value = value.replacingOccurrences(of: ",", with: "")
    let value = value.replacingOccurrences(of: " ", with: "")
    let value = value.replacingOccurrences(of: "-", with: "")
    let value = value.replacingOccurrences(of: "+", with: "")
    let value = value.replacingOccurrences(of: "0", with: "")
    let value = value.replacingOccurrences(of: "1", with: "")
    let value = value.replacingOccurrences(of: "2", with: "")
    let value = value.replacingOccurrences(of: "3", with: "")
    let value = value.replacingOccurrences(of: "4", with: "")
    let value = value.replacingOccurrences(of: "5", with: "")
    let value = value.replacingOccurrences(of: "6", with: "")
    let value = value.replacingOccurrences(of: "7", with: "")
    let value = value.replacingOccurrences(of: "8", with: "")
    let value = value.replacingOccurrences(of: "9", with: "")
    let value = value.replacingOccurrences(of: "0", with: "")
    let value = value.replacingOccurrences(of: "1", with: "")
    let value = value.replacingOccurrences(of: "2", with: "")
    let value = value.replacingOccurrences(of: "3", with: "")
    let value = value.replacingOccurrences(of: "4", with: "")
    let value = value.replacingOccurrences(of: "5", with: "")
    let value = value.replacingOccurrences(of: "6", with: "")
    let value = value.replacingOccurrences(of: "7", with: "")
    let value = value.replacingOccurrences(of: "8", with: "")
    let value = value.replacingOccurrences(of: "9", with: "")
    let value = value.replacingOccurrences(of: "0", with: "")
    let value = value.replacingOccurrences(of: "1", with: "")
    let value = value.replacingOccurrences(of: "2", with: "")
    let value = value.replacingOccurrences(of: "3", with: "")
    let value = value.replacingOccurrences(of: "4", with: "")
    let value = value.replacingOccurrences(of: "5", with: "")
    let value = value.replacingOccurrences(of: "6", with: "")
    let value = value.replacingOccurrences(of: "7", with: "")
    let value = value.replacingOccurrences(of: "8", with: "")
    let value = value.replacingOccurrences(of: "9", with: "")
    let value = value.replacingOccurrences(of: "0", with: "")
    let value = value.replacingOccurrences(of: "1", with: "")
    let value = value.replacingOccurrences(of: "2", with: "")
    let value = value.replacingOccurrences(of: "3", with: "")
    let value = value.replacingOccurrences(of: "4", with: "")
    let value = value.replacingOccurrences(of: "5", with: "")
    let value = value.replacingOccurrences(of: "6", with: "")
    let value = value.replacingOccurrences(of: "7", with: "")
    let value = value.replacingOccurrences(of: "8", with: "")
    let value = value.replacingOccurrences(of: "9", with: "")
    let value = value.replacingOccurrences(of: "0", with: "")
    let value = value.replacingOccurrences(of: "1", with: "")
    let value = value.replacingOccurrences(of: "2", with: "")
    let value = value.replacingOccurrences(of: "3", with: "")
    let value = value.replacingOccurrences(of: "4", with: "")
    let value = value.replacingOccurrences(of: "5", with: "")
    let value = value.replacingOccurrences(of: "6", with: "")
    let value = value.replacingOccurrences(of: "7", with: "")
    let value = value.replacingOccurrences(of: "8", with: "")
    let value = value.replacingOccurrences(of: "9", with: "")
    let value = value.replacingOccurrences(of: "0", with: "")
    let value = value.replacingOccurrences(of: "1", with: "")
    let value =
XCTAssertTrue(closestInteger(value: "10") == 10) // cannot find 'closestInteger' in scope
XCTAssertTrue(closestInteger(value: "14.5") == 15) // cannot find 'closestInteger' in scope
XCTAssertTrue(closestInteger(value: "-15.5") == -16) // cannot find 'closestInteger' in scope
XCTAssertTrue(closestInteger(value: "15.3") == 15) // cannot find 'closestInteger' in scope
XCTAssertTrue(closestInteger(value: "0") == 0) // cannot find 'closestInteger' in scope

```swift
// Create a function that takes a value (string) representing a number
// and returns the closest integer to it. If the number is equidistant
// from two integers, round it away from zero.
// Examples
// Note:
// Rounding away from zero means that if the given number is equidistant
// from two integers, the one you should return is the one that is the
// farthest from zero. For example closest_integer("14.5") should
// return 15 and closest_integer("-14.5") should return -15.
// closestInteger(value: "10") == 10
// closestInteger(value: "15.3") == 15
func closestInteger(value: String) -> Int {
    // your code here
    var value = value.replacingOccurrences(of: ".", with: "")
    var value = value.replacingOccurrences(of: ",", with: "")
    var value = value.replacingOccurrences(of: " ", with: "")
    var value = value.replacingOccurrences(of: "-", with: "")
    var value = value.replacingOccurrences(of: "+", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "1", with: "")
    var value = value.replacingOccurrences(of: "2", with: "")
    var value = value.replacingOccurrences(of: "3", with: "")
    var value = value.replacingOccurrences(of: "4", with: "")
    var value = value.replacingOccurrences(of: "5", with: "")
    var value = value.replacingOccurrences(of: "6", with: "")
    var value = value.replacingOccurrences(of: "7", with: "")
    var value = value.replacingOccurrences(of: "8", with: "")
    var value = value.replacingOccurrences(of: "9", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "0", with:
XCTAssertTrue(closestInteger(value: "10") == 10) // cannot find 'closestInteger' in scope
XCTAssertTrue(closestInteger(value: "14.5") == 15) // cannot find 'closestInteger' in scope
XCTAssertTrue(closestInteger(value: "-15.5") == -16) // cannot find 'closestInteger' in scope
XCTAssertTrue(closestInteger(value: "15.3") == 15) // cannot find 'closestInteger' in scope
XCTAssertTrue(closestInteger(value: "0") == 0) // cannot find 'closestInteger' in scope

func closestInteger(value: String) -> Int {
  let value = Double(value) ?? 0
  let rounded = value.rounded()
  return Int(rounded)
}
```swift
// Create a function that takes a value (string) representing a number
// and returns the closest integer to it. If the number is equidistant
// from two integers, round it away from zero.
// Examples
// Note:
// Rounding away from zero means that if the given number is equidistant
// from two integers, the one you should return is the one that is the
// farthest from zero. For example closest_integer("14.5") should
// return 15 and closest_integer("-14.5") should return -15.
// closestInteger(value: "10") == 10
// closestInteger(value: "15.3") == 15
func closestInteger(value: String) -> Int {
  let value = Double(value) ?? 0
  let rounded = value.rounded()
  return Int(rounded)
}
<|file_separator|>

```swift
// Create a function that takes a value (string) representing a number
// and returns the closest integer to it. If the number is equidistant
// from two integers, round it away from zero.
// Examples
// Note:
// Rounding away from zero means that if the given number is equidistant
// from two integers, the one you should return is the one that is the
// farthest from zero. For example closest_integer("14.5") should
// return 15 and closest_integer("-14.5") should return -15.
// closestInteger(value: "10") == 10
// closestInteger(value: "15.3") == 15
func closestInteger(value: String) -> Int {
    // code goes here
    var value = value.replacingOccurrences(of: ".", with: "")
    var value = value.replacingOccurrences(of: ",", with: "")
    var value = value.replacingOccurrences(of: " ", with: "")
    var value = value.replacingOccurrences(of: "-", with: "")
    var value = value.replacingOccurrences(of: "+", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "1", with: "")
    var value = value.replacingOccurrences(of: "2", with: "")
    var value = value.replacingOccurrences(of: "3", with: "")
    var value = value.replacingOccurrences(of: "4", with: "")
    var value = value.replacingOccurrences(of: "5", with: "")
    var value = value.replacingOccurrences(of: "6", with: "")
    var value = value.replacingOccurrences(of: "7", with: "")
    var value = value.replacingOccurrences(of: "8", with: "")
    var value = value.replacingOccurrences(of: "9", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "1", with: "")
    var value = value.replacingOccurrences(of: "2", with: "")
    var value = value.replacingOccurrences(of: "3", with: "")
    var value = value.replacingOccurrences(of: "4", with: "")
    var value = value.replacingOccurrences(of: "5", with: "")
    var value = value.replacingOccurrences(of: "6", with: "")
    var value = value.replacingOccurrences(of: "7", with: "")
    var value = value.replacingOccurrences(of: "8", with: "")
    var value = value.replacingOccurrences(of: "9", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "1", with: "")
    var value = value.replacingOccurrences(of: "2", with: "")
    var value = value.replacingOccurrences(of: "3", with: "")
    var value = value.replacingOccurrences(of: "4", with: "")
    var value = value.replacingOccurrences(of: "5", with: "")
    var value = value.replacingOccurrences(of: "6", with: "")
    var value = value.replacingOccurrences(of: "7", with: "")
    var value = value.replacingOccurrences(of: "8", with: "")
    var value = value.replacingOccurrences(of: "9", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "1", with: "")
    var value = value.replacingOccurrences(of: "2", with: "")
    var value = value.replacingOccurrences(of: "3", with: "")
    var value = value.replacingOccurrences(of: "4", with: "")
    var value = value.replacingOccurrences(of: "5", with: "")
    var value = value.replacingOccurrences(of: "6", with: "")
    var value = value.replacingOccurrences(of: "7", with: "")
    var value = value.replacingOccurrences(of: "8", with: "")
    var value = value.replacingOccurrences(of: "9", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "1", with: "")
    var value = value.replacingOccurrences(of: "2", with: "")
    var value = value.replacingOccurrences(of: "3", with: "")
    var value = value.replacingOccurrences(of: "4", with: "")
    var value = value.replacingOccurrences(of: "5", with: "")
    var value = value.replacingOccurrences(of: "6", with: "")
    var value = value.replacingOccurrences(of: "7", with: "")
    var value = value.replacingOccurrences(of: "8", with: "")
    var value = value.replacingOccurrences(of: "9", with: "")
    var value = value.replacingOccurrences(of: "0", with: "")
    var value = value.replacingOccurrences(of: "1", with:
XCTAssertTrue(closestInteger(value: "10") == 10) // cannot find 'closestInteger' in scope
XCTAssertTrue(closestInteger(value: "14.5") == 15) // cannot find 'closestInteger' in scope
XCTAssertTrue(closestInteger(value: "-15.5") == -16) // cannot find 'closestInteger' in scope
XCTAssertTrue(closestInteger(value: "15.3") == 15) // cannot find 'closestInteger' in scope
XCTAssertTrue(closestInteger(value: "0") == 0) // cannot find 'closestInteger' in scope

func closestInteger(value: String) -> Int {
    // your code here
    let value = Double(value) ?? 0
    return Int(value.rounded())
}
```swift
// Create a function that takes a value (string) representing a number
// and returns the closest integer to it. If the number is equidistant
// from two integers, round it away from zero.
// Examples
// Note:
// Rounding away from zero means that if the given number is equidistant
// from two integers, the one you should return is the one that is the
// farthest from zero. For example closest_integer("14.5") should
// return 15 and closest_integer("-14.5") should return -15.
// closestInteger(value: "10") == 10
// closestInteger(value: "15.3") == 15
func closestInteger(value: String) -> Int {
    // your code here
    let value = Double(value) ?? 0
    return Int(value.rounded())
}
<|file_separator|>

func closestInteger(value: String) -> Int {
  // your code here
  let value = Double(value) ?? 0
  let rounded = (value + 0.5).rounded()
  return Int(rounded)
}
```swift
// Create a function that takes a value (string) representing a number
// and returns the closest integer to it. If the number is equidistant
// from two integers, round it away from zero.
// Examples
// Note:
// Rounding away from zero means that if the given number is equidistant
// from two integers, the one you should return is the one that is the
// farthest from zero. For example closest_integer("14.5") should
// return 15 and closest_integer("-14.5") should return -15.
// closestInteger(value: "10") == 10
// closestInteger(value: "15.3") == 15
func closestInteger(value: String) -> Int {
  // your code here
  let value = Double(value) ?? 0
  let rounded = (value + 0.5).rounded()
  return Int(rounded)
}
<|file_separator|>
 // XCTAssertTrue failed

func closestInteger(value: String) -> Int {
    // your code here
    let value = Double(value) ?? 0
    let rounded = value.rounded()
    return Int(rounded)
}
```swift
// Create a function that takes a value (string) representing a number
// and returns the closest integer to it. If the number is equidistant
// from two integers, round it away from zero.
// Examples
// Note:
// Rounding away from zero means that if the given number is equidistant
// from two integers, the one you should return is the one that is the
// farthest from zero. For example closest_integer("14.5") should
// return 15 and closest_integer("-14.5") should return -15.
// closestInteger(value: "10") == 10
// closestInteger(value: "15.3") == 15
func closestInteger(value: String) -> Int {
    // your code here
    let value = Double(value) ?? 0
    let rounded = value.rounded()
    return Int(rounded)
}
<|file_separator|>

```swift
// Create a function that takes a value (string) representing a number
// and returns the closest integer to it. If the number is equidistant
// from two integers, round it away from zero.
// Examples
// Note:
// Rounding away from zero means that if the given number is equidistant
// from two integers, the one you should return is the one that is the
// farthest from zero. For example closest_integer("14.5") should
// return 15 and closest_integer("-14.5") should return -15.
// closestInteger(value: "10") == 10
// closestInteger(value: "15.3") == 15
func closestInteger(value: String) -> Int {
  // your code here
  let value = value.replacingOccurrences(of: ".", with: "")
  let value = value.replacingOccurrences(of: ",", with: "")
  let value = value.replacingOccurrences(of: " ", with: "")
  let value = value.replacingOccurrences(of: "-", with: "")
  let value = value.replacingOccurrences(of: "+", with: "")
  let value = value.replacingOccurrences(of: "0", with: "")
  let value = value.replacingOccurrences(of: "1", with: "")
  let value = value.replacingOccurrences(of: "2", with: "")
  let value = value.replacingOccurrences(of: "3", with: "")
  let value = value.replacingOccurrences(of: "4", with: "")
  let value = value.replacingOccurrences(of: "5", with: "")
  let value = value.replacingOccurrences(of: "6", with: "")
  let value = value.replacingOccurrences(of: "7", with: "")
  let value = value.replacingOccurrences(of: "8", with: "")
  let value = value.replacingOccurrences(of: "9", with: "")
  let value = value.replacingOccurrences(of: "0", with: "")
  let value = value.replacingOccurrences(of: "1", with: "")
  let value = value.replacingOccurrences(of: "2", with: "")
  let value = value.replacingOccurrences(of: "3", with: "")
  let value = value.replacingOccurrences(of: "4", with: "")
  let value = value.replacingOccurrences(of: "5", with: "")
  let value = value.replacingOccurrences(of: "6", with: "")
  let value = value.replacingOccurrences(of: "7", with: "")
  let value = value.replacingOccurrences(of: "8", with: "")
  let value = value.replacingOccurrences(of: "9", with: "")
  let value = value.replacingOccurrences(of: "0", with: "")
  let value = value.replacingOccurrences(of: "1", with: "")
  let value = value.replacingOccurrences(of: "2", with: "")
  let value = value.replacingOccurrences(of: "3", with: "")
  let value = value.replacingOccurrences(of: "4", with: "")
  let value = value.replacingOccurrences(of: "5", with: "")
  let value = value.replacingOccurrences(of: "6", with: "")
  let value = value.replacingOccurrences(of: "7", with: "")
  let value = value.replacingOccurrences(of: "8", with: "")
  let value = value.replacingOccurrences(of: "9", with: "")
  let value = value.replacingOccurrences(of: "0", with: "")
  let value = value.replacingOccurrences(of: "1", with: "")
  let value = value.replacingOccurrences(of: "2", with: "")
  let value = value.replacingOccurrences(of: "3", with: "")
  let value = value.replacingOccurrences(of: "4", with: "")
  let value = value.replacingOccurrences(of: "5", with: "")
  let value = value.replacingOccurrences(of: "6", with: "")
  let value = value.replacingOccurrences(of: "7", with: "")
  let value = value.replacingOccurrences(of: "8", with: "")
  let value = value.replacingOccurrences(of: "9", with: "")
  let value = value.replacingOccurrences(of: "0", with: "")
  let value = value.replacingOccurrences(of: "1", with: "")
  let value = value.replacingOccurrences(of: "2", with: "")
  let value = value.replacingOccurrences(of: "3", with: "")
  let value = value.replacingOccurrences(of: "4", with: "")
  let value = value.replacingOccurrences(of: "5", with: "")
  let value = value.replacingOccurrences(of: "6", with: "")
  let value = value.replacingOccurrences(of: "7", with: "")
  let value = value.replacingOccurrences(of: "8", with: "")
  let value = value.replacingOccurrences(of: "9", with: "")
  let value = value.replacingOccurrences(of: "0", with: "")
  let value = value.replacingOccurrences(of: "1", with:
XCTAssertTrue(closestInteger(value: "10") == 10) // cannot find 'closestInteger' in scope
XCTAssertTrue(closestInteger(value: "14.5") == 15) // cannot find 'closestInteger' in scope
XCTAssertTrue(closestInteger(value: "-15.5") == -16) // cannot find 'closestInteger' in scope
XCTAssertTrue(closestInteger(value: "15.3") == 15) // cannot find 'closestInteger' in scope
XCTAssertTrue(closestInteger(value: "0") == 0) // cannot find 'closestInteger' in scope

func closestInteger(value: String) -> Int {
    let value = Double(value) ?? 0
    let rounded = value.rounded()
    return Int(rounded)
}
```swift
// Create a function that takes a value (string) representing a number
// and returns the closest integer to it. If the number is equidistant
// from two integers, round it away from zero.
// Examples
// Note:
// Rounding away from zero means that if the given number is equidistant
// from two integers, the one you should return is the one that is the
// farthest from zero. For example closest_integer("14.5") should
// return 15 and closest_integer("-14.5") should return -15.
// closestInteger(value: "10") == 10
// closestInteger(value: "15.3") == 15
func closestInteger(value: String) -> Int {
    let value = Double(value) ?? 0
    let rounded = value.rounded()
    return Int(rounded)
}
<|file_separator|>

func closestInteger(value: String) -> Int {
  // your code here
  let value = Double(value) ?? 0
  let rounded = (value + 0.5).rounded()
  return Int(rounded)
}
```swift
// Create a function that takes a value (string) representing a number
// and returns the closest integer to it. If the number is equidistant
// from two integers, round it away from zero.
// Examples
// Note:
// Rounding away from zero means that if the given number is equidistant
// from two integers, the one you should return is the one that is the
// farthest from zero. For example closest_integer("14.5") should
// return 15 and closest_integer("-14.5") should return -15.
// closestInteger(value: "10") == 10
// closestInteger(value: "15.3") == 15
func closestInteger(value: String) -> Int {
  // your code here
  let value = Double(value) ?? 0
  let rounded = (value + 0.5).rounded()
  return Int(rounded)
}
<|file_separator|>
 // XCTAssertTrue failed

func makeAPile(n: Int) -> [Int] {
  var pile = [Int]()
  var stones = n
  for i in 1...n {
    pile.append(stones)
    stones = stones + 1
  }
  return pile
}
```swift
// Given a positive integer n, you have to make a pile of n levels of stones.
// The first level has n stones.
// The number of stones in the next level is:
// - the next odd number if n is odd.
// - the next even number if n is even.
// Return the number of stones in each level in an array, where element at index
// i represents the number of stones in the level (i+1).
// Examples:
// makeAPile(n: 3) == [3, 5, 7]
func makeAPile(n: Int) -> [Int] {
  var pile = [Int]()
  var stones = n
  for i in 1...n {
    pile.append(stones)
    stones = stones + 1
  }
  return pile
}
<|file_separator|>
for i in 1...n { // immutable value 'i' was never used; consider replacing with '_' or removing it
 // XCTAssertTrue failed

func makeAPile(n: Int) -> [Int] {
    var arr = [Int]()
    var num = 1
    for _ in 1...n {
        arr.append(num)
        num += 2
    }
    return arr
}
```swift
// Given a positive integer n, you have to make a pile of n levels of stones.
// The first level has n stones.
// The number of stones in the next level is:
// - the next odd number if n is odd.
// - the next even number if n is even.
// Return the number of stones in each level in an array, where element at index
// i represents the number of stones in the level (i+1).
// Examples:
// makeAPile(n: 3) == [3, 5, 7]
func makeAPile(n: Int) -> [Int] {
    var arr = [Int]()
    var num = 1
    for _ in 1...n {
        arr.append(num)
        num += 2
    }
    return arr
}
<|file_separator|>
 // XCTAssertTrue failed

func makeAPile(n: Int) -> [Int] {
    var pile = [Int]()
    var stones = n
    for i in 1...n {
        pile.append(stones)
        stones = stones + 2
    }
    return pile
}

func pascal(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    var pascal = [1]
    for i in 1...n {
        var row = [1]
        for j in 1...i-1 {
            row.append(pascal[j-1] + pascal[j])
        }
        row.append(1)
        pascal = row
    }
    return pascal[n-1]
}

func longestPalindrome(s: String) -> String {
    var longest = ""
    for i in 0...s.count-1 {
        var left = i
        var right = i
        while left >= 0 && right < s.count && s[left] == s[right] {
            if right - left + 1 > longest.count {
                longest = s[left...right]
            }
            left -= 1
            right += 1
        }
        left = i
        right = i + 1
        while left >= 0 && right < s.count && s[left] == s[right] {
            if right - left + 1 > longest.count {
                longest = s[left...right]
            }
            left -= 1
            right += 1
        }
    }
    return longest
}
```swift
// Given a positive integer n, you have to make a pile of n levels of stones.
// The first level has n stones.
// The number of stones in the next level is:
// - the next odd number if n is odd.
// - the next even number if n is even.
// Return the number of stones in each level in an array, where element at index
// i represents the number of stones in the level (i+1).
// Examples:
// makeAPile(n: 3) == [3, 5, 7]
func makeAPile(n: Int) -> [Int] {
    var pile = [Int]()
    var stones = n
    for i in 1...n {
        pile.append(stones)
        stones = stones + 2
    }
    return pile
}
// Given an integer n, return the number of ways to arrange the n-th row of Pascal's triangle.
// Examples:
// pascal(n: 1) == 1
// pascal(n: 2) == 2
// pascal(n: 3) == 3
// pascal(n: 4) == 5
// pascal(n: 5) == 8
func pascal(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    var pascal = [1]
    for i in 1...n {
        var row = [1]
        for j in 1...i-1 {
            row.append(pascal[j-1] + pascal[j])
        }
        row.append(1)
        pascal = row
    }
    return pascal[n-1]
}
// Given a string s, find the longest palindromic substring in s.
// Examples:
// longestPalindrome(s: "abccba") == "abccba"
// longestPalindrome(s: "abcba") == "abcba"
// longestPalindrome(s: "abc") == "a"
func longestPalindrome(s: String) -> String {
    var longest = ""
    for i in 0...s.count-1 {
        var left = i
        var right = i
        while left >= 0 && right < s.count && s[left] == s[right] {
            if right - left + 1 > longest.count {
                longest = s[left...right]
            }
            left -= 1
            right += 1
        }
        left = i
        right = i + 1
        while left >= 0 && right < s.count && s[left] == s[right] {
            if right - left + 1 > longest.count {
                longest = s[left...right]
            }
            left -= 1
            right += 1
        }
    }
    return longest
}
// Given a string s, find the longest palindromic substring in s.
// Examples:
// longestPalindrome(s: "abccba") == "abccba"
// longestPalindrome(s: "abcba") == "abcba"
// longestPalindrome(s: "abc") == "a"
func longestPalindrome(s: String) -> String {
    var longest = ""
    for i in 0...s.count-1 {
        var left = i
        var right = i
        while left >= 0 && right < s.count && s[left] == s[right] {
            if right - left + 1 > longest.count {
                longest = s[left...right]
            }
            left -= 1
            right += 1
        }
        left = i
        right = i + 1
        while left >= 0 && right < s.count && s[left] == s[right] {
            if right - left + 1 > longest.count {
                longest = s[left...right]
            }
            left -= 1
            right += 1
        }
    }
    return longest
}
// Given an integer n, return the number of ways to arrange the n-th row of Pascal's triangle.
// Examples:
// pascal(n: 1) == 1
// pascal(n: 2) == 2
// pascal(n: 3) == 3
// pascal(n: 4) == 5
// pascal(n: 5) == 8
func pascal(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    var pascal = [1]
    for i in 1...n {
        var row = [1]
        for j in 1...i-1 {
            row.append(pascal[j-1] + pascal[j])
        }
        row.append(1)
        pascal = row
    }
    return pascal[n-1]
}
// Given a positive integer n, you have to make a pile of n levels of stones.
// The first level has n stones.
// The number of stones in the next level
for i in 1...n { // immutable value 'i' was never used; consider replacing with '_' or removing it
while left >= 0 && right < s.count && s[left] == s[right] { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
while left >= 0 && right < s.count && s[left] == s[right] { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
longest = s[left...right] // 'subscript(_:)' is unavailable: cannot subscript String with an integer range, use a String.Index range instead.
while left >= 0 && right < s.count && s[left] == s[right] { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
while left >= 0 && right < s.count && s[left] == s[right] { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
longest = s[left...right] // 'subscript(_:)' is unavailable: cannot subscript String with an integer range, use a String.Index range instead.

func makeAPile(n: Int) -> [Int] {
  var pile = [Int]()
  var stones = n
  for i in 1...n {
    pile.append(stones)
    stones = stones + 2
  }
  return pile
}
```swift
// Given a positive integer n, you have to make a pile of n levels of stones.
// The first level has n stones.
// The number of stones in the next level is:
// - the next odd number if n is odd.
// - the next even number if n is even.
// Return the number of stones in each level in an array, where element at index
// i represents the number of stones in the level (i+1).
// Examples:
// makeAPile(n: 3) == [3, 5, 7]
func makeAPile(n: Int) -> [Int] {
  var pile = [Int]()
  var stones = n
  for i in 1...n {
    pile.append(stones)
    stones = stones + 2
  }
  return pile
}
<|file_separator|>
for i in 1...n { // immutable value 'i' was never used; consider replacing with '_' or removing it

func makeAPile(n: Int) -> [Int] {
  var pile = [Int]()
  var stones = n
  for i in 1...n {
    pile.append(stones)
    stones = stones + 2
  }
  return pile
}
```swift
// Given a positive integer n, you have to make a pile of n levels of stones.
// The first level has n stones.
// The number of stones in the next level is:
// - the next odd number if n is odd.
// - the next even number if n is even.
// Return the number of stones in each level in an array, where element at index
// i represents the number of stones in the level (i+1).
// Examples:
// makeAPile(n: 3) == [3, 5, 7]
func makeAPile(n: Int) -> [Int] {
  var pile = [Int]()
  var stones = n
  for i in 1...n {
    pile.append(stones)
    stones = stones + 2
  }
  return pile
}
<|file_separator|>
for i in 1...n { // immutable value 'i' was never used; consider replacing with '_' or removing it

func makeAPile(n: Int) -> [Int] {
    var pile = [Int]()
    var stones = n
    for i in 1...n {
        pile.append(stones)
        stones = stones + 2
    }
    return pile
}
```swift
// Given a positive integer n, you have to make a pile of n levels of stones.
// The first level has n stones.
// The number of stones in the next level is:
// - the next odd number if n is odd.
// - the next even number if n is even.
// Return the number of stones in each level in an array, where element at index
// i represents the number of stones in the level (i+1).
// Examples:
// makeAPile(n: 3) == [3, 5, 7]
func makeAPile(n: Int) -> [Int] {
    var pile = [Int]()
    var stones = n
    for i in 1...n {
        pile.append(stones)
        stones = stones + 2
    }
    return pile
}
<|file_separator|>
for i in 1...n { // immutable value 'i' was never used; consider replacing with '_' or removing it

func makeAPile(n: Int) -> [Int] {
  var pile = [Int]()
  var stones = n
  for i in 1...n {
    pile.append(stones)
    stones = stones + 2
  }
  return pile
}
```swift
// Given a positive integer n, you have to make a pile of n levels of stones.
// The first level has n stones.
// The number of stones in the next level is:
// - the next odd number if n is odd.
// - the next even number if n is even.
// Return the number of stones in each level in an array, where element at index
// i represents the number of stones in the level (i+1).
// Examples:
// makeAPile(n: 3) == [3, 5, 7]
func makeAPile(n: Int) -> [Int] {
  var pile = [Int]()
  var stones = n
  for i in 1...n {
    pile.append(stones)
    stones = stones + 2
  }
  return pile
}
<|file_separator|>
for i in 1...n { // immutable value 'i' was never used; consider replacing with '_' or removing it

func makeAPile(n: Int) -> [Int] {
    var pile = [Int]()
    var stones = n
    for i in 1...n {
        pile.append(stones)
        stones = stones + 1
    }
    return pile
}
```swift
// Given a positive integer n, you have to make a pile of n levels of stones.
// The first level has n stones.
// The number of stones in the next level is:
// - the next odd number if n is odd.
// - the next even number if n is even.
// Return the number of stones in each level in an array, where element at index
// i represents the number of stones in the level (i+1).
// Examples:
// makeAPile(n: 3) == [3, 5, 7]
func makeAPile(n: Int) -> [Int] {
    var pile = [Int]()
    var stones = n
    for i in 1...n {
        pile.append(stones)
        stones = stones + 1
    }
    return pile
}
<|file_separator|>
for i in 1...n { // immutable value 'i' was never used; consider replacing with '_' or removing it
 // XCTAssertTrue failed

func makeAPile(n: Int) -> [Int] {
  var pile = [Int]()
  var stones = n
  for i in 1...n {
    pile.append(stones)
    stones = stones + 2
  }
  return pile
}
```swift
// Given a positive integer n, you have to make a pile of n levels of stones.
// The first level has n stones.
// The number of stones in the next level is:
// - the next odd number if n is odd.
// - the next even number if n is even.
// Return the number of stones in each level in an array, where element at index
// i represents the number of stones in the level (i+1).
// Examples:
// makeAPile(n: 3) == [3, 5, 7]
func makeAPile(n: Int) -> [Int] {
  var pile = [Int]()
  var stones = n
  for i in 1...n {
    pile.append(stones)
    stones = stones + 2
  }
  return pile
}
<|file_separator|>
for i in 1...n { // immutable value 'i' was never used; consider replacing with '_' or removing it

func makeAPile(n: Int) -> [Int] {
    var pile = [Int]()
    var n = n
    while n > 0 {
        pile.append(n)
        n = n + 1
    }
    return pile
}
```swift
// Given a positive integer n, you have to make a pile of n levels of stones.
// The first level has n stones.
// The number of stones in the next level is:
// - the next odd number if n is odd.
// - the next even number if n is even.
// Return the number of stones in each level in an array, where element at index
// i represents the number of stones in the level (i+1).
// Examples:
// makeAPile(n: 3) == [3, 5, 7]
func makeAPile(n: Int) -> [Int] {
    var pile = [Int]()
    var n = n
    while n > 0 {
        pile.append(n)
        n = n + 1
    }
    return pile
}
<|file_separator|>

func wordsString(s: String) -> [String] {
    return s.components(separatedBy: CharacterSet.whitespacesAndNewlines)
}
```swift
// You will be given a string of words separated by commas or spaces. Your task is
// to split the string into words and return an array of the words.
// For example:
// wordsString(s: "Hi, my name is John") == ["Hi", "my", "name", "is", "John"]
// wordsString(s: "One, two, three, four, five, six") == ["One", "two", "three", "four", "five", "six"]
func wordsString(s: String) -> [String] {
    return s.components(separatedBy: CharacterSet.whitespacesAndNewlines)
}
<|file_separator|>
 // XCTAssertTrue failed

func wordsString(s: String) -> [String] {
    return s.components(separatedBy: CharacterSet(charactersIn: ", "))
}
```swift
// You will be given a string of words separated by commas or spaces. Your task is
// to split the string into words and return an array of the words.
// For example:
// wordsString(s: "Hi, my name is John") == ["Hi", "my", "name", "is", "John"]
// wordsString(s: "One, two, three, four, five, six") == ["One", "two", "three", "four", "five", "six"]
func wordsString(s: String) -> [String] {
    return s.components(separatedBy: CharacterSet(charactersIn: ", "))
}
<|file_separator|>
 // XCTAssertTrue failed

func wordsString(s: String) -> [String] {
    return s.components(separatedBy: ", ")
}
```swift
// You will be given a string of words separated by commas or spaces. Your task is
// to split the string into words and return an array of the words.
// For example:
// wordsString(s: "Hi, my name is John") == ["Hi", "my", "name", "is", "John"]
// wordsString(s: "One, two, three, four, five, six") == ["One", "two", "three", "four", "five", "six"]
func wordsString(s: String) -> [String] {
    return s.components(separatedBy: ", ")
}
<|file_separator|>
 // XCTAssertTrue failed

func wordsString(s: String) -> [String] {
  return s.components(separatedBy: CharacterSet(charactersIn: ", "))
}
```swift
// You will be given a string of words separated by commas or spaces. Your task is
// to split the string into words and return an array of the words.
// For example:
// wordsString(s: "Hi, my name is John") == ["Hi", "my", "name", "is", "John"]
// wordsString(s: "One, two, three, four, five, six") == ["One", "two", "three", "four", "five", "six"]
func wordsString(s: String) -> [String] {
  return s.components(separatedBy: CharacterSet(charactersIn: ", "))
}
<|file_separator|>
 // XCTAssertTrue failed

func wordsString(s: String) -> [String] {
    let words = s.components(separatedBy: ",")
    return words
}
```swift
// You will be given a string of words separated by commas or spaces. Your task is
// to split the string into words and return an array of the words.
// For example:
// wordsString(s: "Hi, my name is John") == ["Hi", "my", "name", "is", "John"]
// wordsString(s: "One, two, three, four, five, six") == ["One", "two", "three", "four", "five", "six"]
func wordsString(s: String) -> [String] {
    let words = s.components(separatedBy: ",")
    return words
}
<|file_separator|>
 // XCTAssertTrue failed

func wordsString(s: String) -> [String] {
    let words = s.components(separatedBy: ", ")
    return words
}
```swift
// You will be given a string of words separated by commas or spaces. Your task is
// to split the string into words and return an array of the words.
// For example:
// wordsString(s: "Hi, my name is John") == ["Hi", "my", "name", "is", "John"]
// wordsString(s: "One, two, three, four, five, six") == ["One", "two", "three", "four", "five", "six"]
func wordsString(s: String) -> [String] {
    let words = s.components(separatedBy: ", ")
    return words
}
<|file_separator|>
 // XCTAssertTrue failed

func wordsString(s: String) -> [String] {
    return s.components(separatedBy: CharacterSet(charactersIn: " ,").inverted).filter { !$0.isEmpty }
}
```swift
// You will be given a string of words separated by commas or spaces. Your task is
// to split the string into words and return an array of the words.
// For example:
// wordsString(s: "Hi, my name is John") == ["Hi", "my", "name", "is", "John"]
// wordsString(s: "One, two, three, four, five, six") == ["One", "two", "three", "four", "five", "six"]
func wordsString(s: String) -> [String] {
    return s.components(separatedBy: CharacterSet(charactersIn: " ,").inverted).filter { !$0.isEmpty }
}
<|file_separator|>
 // XCTAssertTrue failed

func wordsString(s: String) -> [String] {
    return s.components(separatedBy: ", ")
}
```swift
// You will be given a string of words separated by commas or spaces. Your task is
// to split the string into words and return an array of the words.
// For example:
// wordsString(s: "Hi, my name is John") == ["Hi", "my", "name", "is", "John"]
// wordsString(s: "One, two, three, four, five, six") == ["One", "two", "three", "four", "five", "six"]
func wordsString(s: String) -> [String] {
    return s.components(separatedBy: ", ")
}
<|file_separator|>
 // XCTAssertTrue failed

func wordsString(s: String) -> [String] {
    return s.components(separatedBy: ", ")
}
```swift
// You will be given a string of words separated by commas or spaces. Your task is
// to split the string into words and return an array of the words.
// For example:
// wordsString(s: "Hi, my name is John") == ["Hi", "my", "name", "is", "John"]
// wordsString(s: "One, two, three, four, five, six") == ["One", "two", "three", "four", "five", "six"]
func wordsString(s: String) -> [String] {
    return s.components(separatedBy: ", ")
}
<|file_separator|>
 // XCTAssertTrue failed

func wordsString(s: String) -> [String] {
    return s.components(separatedBy: ", ")
}
```swift
// You will be given a string of words separated by commas or spaces. Your task is
// to split the string into words and return an array of the words.
// For example:
// wordsString(s: "Hi, my name is John") == ["Hi", "my", "name", "is", "John"]
// wordsString(s: "One, two, three, four, five, six") == ["One", "two", "three", "four", "five", "six"]
func wordsString(s: String) -> [String] {
    return s.components(separatedBy: ", ")
}
<|file_separator|>
 // XCTAssertTrue failed

func chooseNum(x: Int, y: Int) -> Int {
    var x = x
    var y = y
    if x > y {
        x = y.swap(&x)
    }
    for i in x...y {
        if i % 2 == 0 {
            return i
        }
    }
    return -1
}

func chooseNum(x: Int, y: Int) -> Int {
    var x = x
    var y = y
    if x > y {
        x = y.swap(&x)
    }
    for i in x...y {
        if i % 2 == 1 {
            return i
        }
    }
    return -1
}
```swift
// This function takes two positive numbers x and y and returns the
// biggest even integer number that is in the range [x, y] inclusive. If 
// there's no such number, then the function should return -1.
// For example:
// chooseNum(x: 12, y: 15) == 14
// chooseNum(x: 13, y: 12) == -1
func chooseNum(x: Int, y: Int) -> Int {
    var x = x
    var y = y
    if x > y {
        x = y.swap(&x)
    }
    for i in x...y {
        if i % 2 == 0 {
            return i
        }
    }
    return -1
}

// This function takes two positive numbers x and y and returns the
// biggest odd integer number that is in the range [x, y] inclusive. If 
// there's no such number, then the function should return -1.
// For example:
// chooseNum(x: 12, y: 15) == 13
// chooseNum(x: 13, y: 12) == -1
func chooseNum(x: Int, y: Int) -> Int {
    var x = x
    var y = y
    if x > y {
        x = y.swap(&x)
    }
    for i in x...y {
        if i % 2 == 1 {
            return i
        }
    }
    return -1
}
<|file_separator|>
x = y.swap(&x) // value of type 'Int' has no member 'swap'
func chooseNum(x: Int, y: Int) -> Int { // invalid redeclaration of 'chooseNum(x:y:)'
x = y.swap(&x) // value of type 'Int' has no member 'swap'

func chooseNum(x: Int, y: Int) -> Int {
    var result = -1
    for i in x...y {
        if i % 2 == 0 {
            result = i
        }
    }
    return result
}
```swift
// This function takes two positive numbers x and y and returns the
// biggest even integer number that is in the range [x, y] inclusive. If 
// there's no such number, then the function should return -1.
// For example:
// chooseNum(x: 12, y: 15) == 14
// chooseNum(x: 13, y: 12) == -1
func chooseNum(x: Int, y: Int) -> Int {
    var result = -1
    for i in x...y {
        if i % 2 == 0 {
            result = i
        }
    }
    return result
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func chooseNum(x: Int, y: Int) -> Int {
    var x = x
    var y = y
    var result = -1
    
    if x > y {
        x = y.swap(&x)
    }
    
    while x <= y {
        if x % 2 == 0 {
            result = x
            break
        }
        x += 1
    }
    
    return result
}

func chooseNum(x: Int) -> Int {
    var x = x
    var result = -1
    
    while x > 0 {
        if x % 2 == 0 {
            result = x
            break
        }
        x -= 1
    }
    
    return result
}
```swift
// This function takes two positive numbers x and y and returns the
// biggest even integer number that is in the range [x, y] inclusive. If 
// there's no such number, then the function should return -1.
// For example:
// chooseNum(x: 12, y: 15) == 14
// chooseNum(x: 13, y: 12) == -1
func chooseNum(x: Int, y: Int) -> Int {
    var x = x
    var y = y
    var result = -1
    
    if x > y {
        x = y.swap(&x)
    }
    
    while x <= y {
        if x % 2 == 0 {
            result = x
            break
        }
        x += 1
    }
    
    return result
}

// This function takes a positive integer number and returns the
// biggest even integer number that is in the range [1, number] inclusive.
// For example:
// chooseNum(x: 12) == 12
// chooseNum(x: 13) == 14
func chooseNum(x: Int) -> Int {
    var x = x
    var result = -1
    
    while x > 0 {
        if x % 2 == 0 {
            result = x
            break
        }
        x -= 1
    }
    
    return result
}

// This function takes a positive integer number and returns the
// biggest even integer number that is in the range [1, number] inclusive.
// For example:
// chooseNum(x: 12) == 12
// chooseNum(x: 13) == 14
func chooseNum(x: Int) -> Int {
    var x = x
    var result = -1
    
    while x > 0 {
        if x % 2 == 0 {
            result = x
            break
        }
        x -= 1
    }
    
    return result
}

// This function takes a positive integer number and returns the
// biggest even integer number that is in the range [1, number] inclusive.
// For example:
// chooseNum(x: 12) == 12
// chooseNum(x: 13) == 14
func chooseNum(x: Int) -> Int {
    var x = x
    var result = -1
    
    while x > 0 {
        if x % 2 == 0 {
            result = x
            break
        }
        x -= 1
    }
    
    return result
}

// This function takes a positive integer number and returns the
// biggest even integer number that is in the range [1, number] inclusive.
// For example:
// chooseNum(x: 12) == 12
// chooseNum(x: 13) == 14
func chooseNum(x: Int) -> Int {
    var x = x
    var result = -1
    
    while x > 0 {
        if x % 2 == 0 {
            result = x
            break
        }
        x -= 1
    }
    
    return result
}

// This function takes a positive integer number and returns the
// biggest even integer number that is in the range [1, number] inclusive.
// For example:
// chooseNum(x: 12) == 12
// chooseNum(x: 13) == 14
func chooseNum(x: Int) -> Int {
    var x = x
    var result = -1
    
    while x > 0 {
        if x % 2 == 0 {
            result = x
            break
        }
        x -= 1
    }
    
    return result
}

// This function takes a positive integer number and returns the
// biggest even integer number that is in the range [1, number] inclusive.
// For example:
// chooseNum(x: 12) == 12
// chooseNum(x: 13) == 14
func chooseNum(x: Int) -> Int {
    var x = x
    var result = -1
    
    while x > 0 {
        if x % 2 == 0 {
            result = x
            break
        }
        x -= 1
    }
    
    return result
}

// This function takes a positive integer number and returns the
// biggest even integer number that is in the range [1, number] inclusive.
// For example:
// chooseNum(x: 12) == 12
// chooseNum(x: 13) == 14
func chooseNum(x: Int) -> Int {
    var x = x
    var result = -1
    
    while x > 0 {
x = y.swap(&x) // value of type 'Int' has no member 'swap'

func chooseNum(x: Int, y: Int) -> Int {
    var result = -1
    for i in x...y {
        if i % 2 == 0 {
            result = i
        }
    }
    return result
}
```swift
// This function takes two positive numbers x and y and returns the
// biggest even integer number that is in the range [x, y] inclusive. If 
// there's no such number, then the function should return -1.
// For example:
// chooseNum(x: 12, y: 15) == 14
// chooseNum(x: 13, y: 12) == -1
func chooseNum(x: Int, y: Int) -> Int {
    var result = -1
    for i in x...y {
        if i % 2 == 0 {
            result = i
        }
    }
    return result
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func chooseNum(x: Int, y: Int) -> Int {
    var x = x
    var y = y
    if x > y {
        x = y.swap(&x)
    }
    var result = -1
    while x <= y {
        if x % 2 == 0 {
            result = x
            break
        }
        x += 1
    }
    return result
}
```swift
// This function takes two positive numbers x and y and returns the
// biggest even integer number that is in the range [x, y] inclusive. If 
// there's no such number, then the function should return -1.
// For example:
// chooseNum(x: 12, y: 15) == 14
// chooseNum(x: 13, y: 12) == -1
func chooseNum(x: Int, y: Int) -> Int {
    var x = x
    var y = y
    if x > y {
        x = y.swap(&x)
    }
    var result = -1
    while x <= y {
        if x % 2 == 0 {
            result = x
            break
        }
        x += 1
    }
    return result
}
<|file_separator|>
x = y.swap(&x) // value of type 'Int' has no member 'swap'

func chooseNum(x: Int, y: Int) -> Int {
    var result = -1
    for i in x...y {
        if i % 2 == 0 {
            result = i
        }
    }
    return result
}
```swift
// This function takes two positive numbers x and y and returns the
// biggest even integer number that is in the range [x, y] inclusive. If 
// there's no such number, then the function should return -1.
// For example:
// chooseNum(x: 12, y: 15) == 14
// chooseNum(x: 13, y: 12) == -1
func chooseNum(x: Int, y: Int) -> Int {
    var result = -1
    for i in x...y {
        if i % 2 == 0 {
            result = i
        }
    }
    return result
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func chooseNum(x: Int, y: Int) -> Int {
    var result = -1
    for i in x...y {
        if i % 2 == 0 {
            result = i
        }
    }
    return result
}
```swift
// This function takes two positive numbers x and y and returns the
// biggest even integer number that is in the range [x, y] inclusive. If 
// there's no such number, then the function should return -1.
// For example:
// chooseNum(x: 12, y: 15) == 14
// chooseNum(x: 13, y: 12) == -1
func chooseNum(x: Int, y: Int) -> Int {
    var result = -1
    for i in x...y {
        if i % 2 == 0 {
            result = i
        }
    }
    return result
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func chooseNum(x: Int, y: Int) -> Int {
    var result = -1
    for i in x...y {
        if i % 2 == 0 {
            result = i
        }
    }
    return result
}

func zeros(n: Int) -> Int {
    var result = 0
    var n = n
    while n > 0 {
        if n % 10 == 0 {
            result += 1
        }
        n /= 10
    }
    return result
}
```swift
// This function takes two positive numbers x and y and returns the
// biggest even integer number that is in the range [x, y] inclusive. If 
// there's no such number, then the function should return -1.
// For example:
// chooseNum(x: 12, y: 15) == 14
// chooseNum(x: 13, y: 12) == -1
func chooseNum(x: Int, y: Int) -> Int {
    var result = -1
    for i in x...y {
        if i % 2 == 0 {
            result = i
        }
    }
    return result
}

// This function takes a positive integer number n and returns the
// number of zeros at the end of the decimal representation of n.
// For example:
// zeros(n: 10) == 1
// zeros(n: 100) == 2
// zeros(n: 1000) == 3
func zeros(n: Int) -> Int {
    var result = 0
    var n = n
    while n > 0 {
        if n % 10 == 0 {
            result += 1
        }
        n /= 10
    }
    return result
}

// This function takes a positive integer number n and returns the
// number of zeros at the beginning of the decimal representation of n.
// For example:
// zeros(n: 10) == 1
// zeros(n: 100) == 2
// zeros(n: 1000) == 3
func zeros(n: Int) -> Int {
    var result = 0
    var n = n
    while n > 0 {
        if n % 10 == 0 {
            result += 1
        }
        n /= 10
    }
    return result
}

// This function takes a positive integer number n and returns the
// number of zeros at the beginning and at the end of the decimal
// representation of n.
// For example:
// zeros(n: 10) == 1
// zeros(n: 100) == 2
// zeros(n: 1000) == 3
func zeros(n: Int) -> Int {
    var result = 0
    var n = n
    while n > 0 {
        if n % 10 == 0 {
            result += 1
        }
        n /= 10
    }
    return result
}

// This function takes a positive integer number n and returns the
// number of zeros at the beginning and at the end of the decimal
// representation of n.
// For example:
// zeros(n: 10) == 1
// zeros(n: 100) == 2
// zeros(n: 1000) == 3
func zeros(n: Int) -> Int {
    var result = 0
    var n = n
    while n > 0 {
        if n % 10 == 0 {
            result += 1
        }
        n /= 10
    }
    return result
}

// This function takes a positive integer number n and returns the
// number of zeros at the beginning and at the end of the decimal
// representation of n.
// For example:
// zeros(n: 10) == 1
// zeros(n: 100) == 2
// zeros(n: 1000) == 3
func zeros(n: Int) -> Int {
    var result = 0
    var n = n
    while n > 0 {
        if n % 10 == 0 {
            result += 1
        }
        n /= 10
    }
    return result
}

// This function takes a positive integer number n and returns the
// number of zeros at the beginning and at the end of the decimal
// representation of n.
// For example:
// zeros(n: 10) == 1
// zeros(n: 100) == 2
// zeros(n: 1000) == 3
func zeros(n: Int) -> Int {
    var result = 0
    var n = n
    while n > 0 {
        if n % 10 == 0 {
            result += 1
        }
        n /= 10
    }
    return result
}

// This function takes a positive integer number n and returns the
// number of zeros at the beginning and at the end of the decimal
// representation of n.
// For example:
// zeros(n: 10) == 1
// zeros(n: 100) == 2
// zeros(n: 1000) == 3
func zeros(n: Int) -> Int {
 // Fatal error: Range requires lowerBound <= upperBound

func chooseNum(x: Int, y: Int) -> Int {
    var result = -1
    for i in x...y {
        if i % 2 == 0 {
            result = i
        }
    }
    return result
}
```swift
// This function takes two positive numbers x and y and returns the
// biggest even integer number that is in the range [x, y] inclusive. If 
// there's no such number, then the function should return -1.
// For example:
// chooseNum(x: 12, y: 15) == 14
// chooseNum(x: 13, y: 12) == -1
func chooseNum(x: Int, y: Int) -> Int {
    var result = -1
    for i in x...y {
        if i % 2 == 0 {
            result = i
        }
    }
    return result
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func chooseNum(x: Int, y: Int) -> Int {
    var result = -1
    for i in x...y {
        if i % 2 == 0 {
            result = i
        }
    }
    return result
}
```swift
// This function takes two positive numbers x and y and returns the
// biggest even integer number that is in the range [x, y] inclusive. If 
// there's no such number, then the function should return -1.
// For example:
// chooseNum(x: 12, y: 15) == 14
// chooseNum(x: 13, y: 12) == -1
func chooseNum(x: Int, y: Int) -> Int {
    var result = -1
    for i in x...y {
        if i % 2 == 0 {
            result = i
        }
    }
    return result
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

extension Int: Error {

}

extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    guard n <= m else { return .failure(n) }
    let avg = (n + m) / 2
    let bin = String(avg, radix: 2)
    return .success(bin)
}

func trailingZeros(n: Int) -> Result<Int, Int> {
    guard n > 0 else { return .failure(n) }
    var n = n
    var zeros = 0
    while n % 10 == 0 {
        zeros += 1
        n /= 10
    }
    return .success(zeros)
}
```swift
extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    guard n <= m else { return .failure(n) }
    let avg = (n + m) / 2
    let bin = String(avg, radix: 2)
    return .success(bin)
}

// You are given a positive integer n, and your task is to find the number of
// trailing zeros in n!.
// Example:
// trailingZeros(n: 10) == .success(2)
// trailingZeros(n: 100) == .success(24)
// trailingZeros(n: 1000) == .success(249)
// trailingZeros(n: 10000) == .failure(-1)
func trailingZeros(n: Int) -> Result<Int, Int> {
    guard n > 0 else { return .failure(n) }
    var n = n
    var zeros = 0
    while n % 10 == 0 {
        zeros += 1
        n /= 10
    }
    return .success(zeros)
}

// You are given a positive integer n, and your task is to find the number of
// trailing zeros in n!.
// Example:
// trailingZeros(n: 10) == .success(2)
// trailingZeros(n: 100) == .success(24)
// trailingZeros(n: 1000) == .success(249)
// trailingZeros(n: 10000) == .failure(-1)
func trailingZeros(n: Int) -> Result<Int, Int> {
    guard n > 0 else { return .failure(n) }
    var n = n
    var zeros = 0
    while n % 10 == 0 {
        zeros += 1
        n /= 10
    }
    return .success(zeros)
}

// You are given a positive integer n, and your task is to find the number of
// trailing zeros in n!.
// Example:
// trailingZeros(n: 10) == .success(2)
// trailingZeros(n: 100) == .success(24)
// trailingZeros(n: 1000) == .success(249)
// trailingZeros(n: 10000) == .failure(-1)
func trailingZeros(n: Int) -> Result<Int, Int> {
    guard n > 0 else { return .failure(n) }
    var n = n
    var zeros = 0
    while n % 10 == 0 {
        zeros += 1
        n /= 10
    }
    return .success(zeros)
}

// You are given a positive integer n, and your task is to find the number of
// trailing zeros in n!.
// Example:
// trailingZeros(n: 10) == .success(2)
// trailingZeros(n: 100) == .success(24)
// trailingZeros(n: 1000) == .success(249)
// trailingZeros(n: 10000) == .failure(-1)
func trailingZeros(n: Int) -> Result<Int, Int> {
    guard n > 0 else { return .failure(n) }
    var n = n
    var zeros = 0
    while n % 10 == 0 {
        zeros += 1
        n /= 10
    }
    return .success(zeros)
}

// You are given a positive integer n, and your task is to find the number of
// trailing zeros in n!.
// Example:
// trailingZeros(n: 10) == .success(2)
// trailingZeros(n: 100) == .success(24)
// trailingZeros(n: 1000) == .success(249)
// trailingZeros(n: 10000) == .failure(-1)
func trailingZeros(n: Int) -> Result<Int, Int> {
    guard n > 0 else { return .failure(n) }
    var n = n
    var zeros = 0
    while n % 10 == 0 {
        zeros += 1
        n /= 10
    }
    return .success(zeros)
}

// You are given a positive integer n, and your task is to find the
extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'

extension Int: Error {

}

extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    if n > m {
        return .failure(-1)
    }
    
    let sum = (n...m).reduce(0) { $0 + $1 }
    let avg = sum / (m - n + 1)
    
    return .success(String(avg, radix: 2))
}

func removeSpecialCharacters(str: String) -> String {
    return str.components(separatedBy: CharacterSet.alphanumerics.inverted).joined()
}

func removeVowels(str: String) -> String {
    return str.components(separatedBy: ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]).joined()
}

func removeConsonants(str: String) -> String {
    return str.components(separatedBy: ["b", "c", "d", "f", "g", "h", "j", "k", "l", "m", "n", "p", "q", "r", "s", "t", "v", "w", "x", "y", "z", "B", "C", "D", "F", "G", "H", "J", "K", "L", "M", "N", "P", "Q", "R", "S", "T", "V", "W", "X", "Y", "Z", "a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]).joined()
}

func removeDigits(str: String) -> String {
    return str.components(separatedBy: CharacterSet.decimalDigits.inverted).joined()
}

func removeSpaces(str: String) -> String {
    return str.components(separatedBy: CharacterSet.whitespaces).joined()
}

func removePunctuation(str: String) -> String {
    return str.components(separatedBy: CharacterSet.punctuationCharacters.inverted).joined()
}

func removeSpecialCharactersAndSpaces(str: String) -> String {
    return str.components(separatedBy: CharacterSet.alphanumerics.inverted).joined()
}

func removeUppercaseLetters(str: String) -> String {
    return str.components(separatedBy: CharacterSet.uppercaseLetters.inverted).joined()
}
```swift
extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    if n > m {
        return .failure(-1)
    }
    
    let sum = (n...m).reduce(0) { $0 + $1 }
    let avg = sum / (m - n + 1)
    
    return .success(String(avg, radix: 2))
}

// Given a string, you need to remove all the special characters.
// Example:
// removeSpecialCharacters("Hello World!") == "Hello World"
// removeSpecialCharacters("Hello!@#$%^&*() World") == "Hello World"
func removeSpecialCharacters(str: String) -> String {
    return str.components(separatedBy: CharacterSet.alphanumerics.inverted).joined()
}

// Given a string, you need to remove all the vowels.
// Example:
// removeVowels("Hello World!") == "Hll Wrld!"
// removeVowels("Hello!@#$%^&*() World") == "Hll Wrd!"
func removeVowels(str: String) -> String {
    return str.components(separatedBy: ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]).joined()
}

// Given a string, you need to remove all the consonants.
// Example:
// removeConsonants("Hello World!") == "Hll Wrld!"
// removeConsonants("Hello!@#$%^&*() World") == "Hll Wrd!"
func removeConsonants(str: String) -> String {
    return str.components(separatedBy: ["b", "c", "d", "f", "g", "h", "j", "k", "l", "m", "n", "p", "q", "r", "s", "t", "v", "w", "x", "y", "z", "B", "C", "D", "F", "G", "H", "J", "K", "L", "M", "N", "P", "Q", "R", "S", "T", "V", "W", "X", "Y", "Z", "a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]).joined()
}

// Given a string, you need to remove all the digits.
// Example:
// removeDigits("Hello World!") == "Hello World!"
// removeDigits("Hello!@#$%^&*() World") == "Hello World!"
func removeDigits(str: String) -> String {
    return str.components(separatedBy: CharacterSet.decimalDigits.inverted).joined()
}

// Given a string, you need to remove all the spaces.
// Example:
// removeSpaces("Hello World!") == "HelloWorld!"
// removeSpaces("Hello!@#$%^&*() World") == "HelloWorld"
func removeSpaces(str: String) -> String {
    return str.components(separatedBy: CharacterSet.whitespaces).joined()
}

// Given a string, you need to remove all the punctuation marks.
// Example:
// removePunctuation("Hello World!") == "Hello World"
// removePunctuation("Hello!@#$%^&*() World") == "Hello World"
func removePunctuation(str: String) -> String {
    return str.components(separatedBy: CharacterSet.punctuationCharacters.inverted).joined()
}

// Given a string, you need to remove all the special characters and spaces.
// Example:
// removeSpecialCharactersAndSpaces("Hello World!") == "HelloWorld"
// removeSpecialCharactersAndSpaces("Hello!@#$%^&*() World") == "HelloWorld"
func removeSpecialCharactersAndSpaces(str: String) -> String {
    return str.components(separatedBy: CharacterSet.alphanumerics.inverted).joined()
}

// Given a string, you need to remove all the uppercase letters.
// Example:
// removeUppercaseLetters("Hello World!") == "Hello World!"
// removeUppercaseLetters("Hello!@#$%^&*() World") == "Hello World!"
func removeUppercaseLetters(str: String) -> String {
    return str.components(separatedBy: CharacterSet.uppercaseLetters.inverted).joined()
}

// Given a string, you need to remove all the lowercase letters.
// Example:
// removeLowercaseLetters("Hello World!") == "Hello World!"
// removeLowercaseLetters("Hello!@#$%^&*() World") == "Hello World!"
extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'

extension Int: Error {

}

extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    if n > m {
        return .failure(n)
    }
    let sum = (n + m) / 2
    let bin = String(sum, radix: 2)
    return .success(bin)
}

func removeFirstAndLast(s: String) -> String {
    if s.isEmpty {
        return "Empty string"
    }
    return String(s.dropFirst().dropLast())
}

func removeA(s: String) -> String {
    return s.replacingOccurrences(of: "a", with: "")
}

func removeB(s: String) -> String {
    return s.replacingOccurrences(of: "b", with: "")
}

func removeC(s: String) -> String {
    return s.replacingOccurrences(of: "c", with: "")
}

func removeD(s: String) -> String {
    return s.replacingOccurrences(of: "d", with: "")
}

func removeE(s: String) -> String {
    return s.replacingOccurrences(of: "e", with: "")
}

func removeF(s: String) -> String {
    return s.replacingOccurrences(of: "f", with: "")
}

func removeG(s: String) -> String {
    return s.replacingOccurrences(of: "g", with: "")
}
```swift
extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    if n > m {
        return .failure(n)
    }
    let sum = (n + m) / 2
    let bin = String(sum, radix: 2)
    return .success(bin)
}

// You are given a string s, and your task is to remove the first and last
// characters from the string. If the resulting string is empty, return the
// string "Empty string".
// Example:
// removeFirstAndLast("Hello") == "ell"
// removeFirstAndLast("Hello, World!") == "ello, World"
// removeFirstAndLast("Hello, World") == "Empty string"
func removeFirstAndLast(s: String) -> String {
    if s.isEmpty {
        return "Empty string"
    }
    return String(s.dropFirst().dropLast())
}

// You are given a string s, and your task is to remove all occurrences of the
// character 'a' from the string.
// Example:
// removeA("Hello") == "ello"
// removeA("Hello, World!") == "ello, World"
// removeA("Hello, World") == "ello, World"
func removeA(s: String) -> String {
    return s.replacingOccurrences(of: "a", with: "")
}

// You are given a string s, and your task is to remove all occurrences of the
// character 'b' from the string.
// Example:
// removeB("Hello") == "Hel"
// removeB("Hello, World!") == "Hel, World"
// removeB("Hello, World") == "Hel, World"
func removeB(s: String) -> String {
    return s.replacingOccurrences(of: "b", with: "")
}

// You are given a string s, and your task is to remove all occurrences of the
// character 'c' from the string.
// Example:
// removeC("Hello") == "Hel"
// removeC("Hello, World!") == "Hel, World"
// removeC("Hello, World") == "Hel, World"
func removeC(s: String) -> String {
    return s.replacingOccurrences(of: "c", with: "")
}

// You are given a string s, and your task is to remove all occurrences of the
// character 'd' from the string.
// Example:
// removeD("Hello") == "Hel"
// removeD("Hello, World!") == "Hel, World"
// removeD("Hello, World") == "Hel, World"
func removeD(s: String) -> String {
    return s.replacingOccurrences(of: "d", with: "")
}

// You are given a string s, and your task is to remove all occurrences of the
// character 'e' from the string.
// Example:
// removeE("Hello") == "Hel"
// removeE("Hello, World!") == "Hel, World"
// removeE("Hello, World") == "Hel, World"
func removeE(s: String) -> String {
    return s.replacingOccurrences(of: "e", with: "")
}

// You are given a string s, and your task is to remove all occurrences of the
// character 'f' from the string.
// Example:
// removeF("Hello") == "Hel"
// removeF("Hello, World!") == "Hel, World"
// removeF("Hello, World") == "Hel, World"
func removeF(s: String) -> String {
    return s.replacingOccurrences(of: "f", with: "")
}

// You are given a string s, and your task is to remove all occurrences of the
// character 'g' from the string.
// Example:
// removeG("Hello") == "Hel"
// removeG("Hello, World!") == "Hel, World"
// removeG("Hello, World") == "Hel, World"
func removeG(s: String) -> String {
    return s.replacingOccurrences(of: "g", with: "")
}

// You are given a string s, and your task is to remove all occurrences of the
// character 'h' from the string.
// Example:
// removeH("Hello") == "Hel"
// removeH("Hello, World!") == "Hel, World"
// removeH("Hello, World") == "Hel, World"
func removeH(s: String) -> String {
    return s.replacingOccurrences(of: "h", with: "")
extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'

extension Int: Error {

}

extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    if n > m {
        return .failure(n)
    }
    let avg = (n + m) / 2
    return .success(String(avg, radix: 2))
}

func intToString(n: Int) -> Result<String, Int> {
    if n > 9999999999 {
        return .failure(n)
    }
    return .success(String(n))
}
```swift
extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    if n > m {
        return .failure(n)
    }
    let avg = (n + m) / 2
    return .success(String(avg, radix: 2))
}

// Given an integer, convert it to a string.
// Example:
// intToString(123) == .success("123")
// intToString(12345) == .failure(-1)
// intToString(1234567890) == .failure(-1)
func intToString(n: Int) -> Result<String, Int> {
    if n > 9999999999 {
        return .failure(n)
    }
    return .success(String(n))
}

// Given an integer, convert it to a string.
// Example:
// intToString(123) == .success("123")
// intToString(12345) == .failure(-1)
// intToString(1234567890) == .failure(-1)
func intToString(n: Int) -> Result<String, Int> {
    if n > 9999999999 {
        return .failure(n)
    }
    return .success(String(n))
}

// Given an integer, convert it to a string.
// Example:
// intToString(123) == .success("123")
// intToString(12345) == .failure(-1)
// intToString(1234567890) == .failure(-1)
func intToString(n: Int) -> Result<String, Int> {
    if n > 9999999999 {
        return .failure(n)
    }
    return .success(String(n))
}

// Given an integer, convert it to a string.
// Example:
// intToString(123) == .success("123")
// intToString(12345) == .failure(-1)
// intToString(1234567890) == .failure(-1)
func intToString(n: Int) -> Result<String, Int> {
    if n > 9999999999 {
        return .failure(n)
    }
    return .success(String(n))
}

// Given an integer, convert it to a string.
// Example:
// intToString(123) == .success("123")
// intToString(12345) == .failure(-1)
// intToString(1234567890) == .failure(-1)
func intToString(n: Int) -> Result<String, Int> {
    if n > 9999999999 {
        return .failure(n)
    }
    return .success(String(n))
}

// Given an integer, convert it to a string.
// Example:
// intToString(123) == .success("123")
// intToString(12345) == .failure(-1)
// intToString(1234567890) == .failure(-1)
func intToString(n: Int) -> Result<String, Int> {
    if n > 9999999999 {
        return .failure(n)
    }
    return .success(String(n))
}

// Given an integer, convert it to a string.
// Example:
// intToString(123) == .success("123")
// intToString(12345) == .failure(-1)
// intToString(1234567890) == .failure(-1)
func intToString(n: Int) -> Result<String, Int> {
    if n > 9999999999 {
        return .failure(n)
    }
    return .success(String(n))
}

// Given an integer, convert it to a string.
// Example:
// intToString(123) == .success("123")
// intToString(12345) == .failure(-1)
// intToString(1234567890) == .failure(-1)
extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'

extension Int: Error {

}

extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    guard n <= m else {
        return .failure(n)
    }
    
    let avg = (n + m) / 2
    let bin = String(avg, radix: 2)
    
    return .success(bin)
}

func trailingZeros(n: Int) -> Result<Int, Int> {
    guard n > 0 else {
        return .failure(n)
    }
    
    var n = n
    var zeros = 0
    
    while n % 10 == 0 {
        zeros += 1
        n /= 10
    }
    
    return .success(zeros)
}
```swift
extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    guard n <= m else {
        return .failure(n)
    }
    
    let avg = (n + m) / 2
    let bin = String(avg, radix: 2)
    
    return .success(bin)
}

// You are given a positive integer n.
// Your task is to find the number of trailing zeros in n!.
// Example:
// trailingZeros(n: 10) == .success(2)
// trailingZeros(n: 100) == .success(24)
// trailingZeros(n: 1000) == .success(249)
// trailingZeros(n: 10000) == .success(495)
func trailingZeros(n: Int) -> Result<Int, Int> {
    guard n > 0 else {
        return .failure(n)
    }
    
    var n = n
    var zeros = 0
    
    while n % 10 == 0 {
        zeros += 1
        n /= 10
    }
    
    return .success(zeros)
}

// You are given a positive integer n.
// Your task is to find the number of trailing zeros in n!.
// Example:
// trailingZeros(n: 10) == .success(2)
// trailingZeros(n: 100) == .success(24)
// trailingZeros(n: 1000) == .success(249)
// trailingZeros(n: 10000) == .success(495)
func trailingZeros(n: Int) -> Result<Int, Int> {
    guard n > 0 else {
        return .failure(n)
    }
    
    var n = n
    var zeros = 0
    
    while n % 10 == 0 {
        zeros += 1
        n /= 10
    }
    
    return .success(zeros)
}

// You are given a positive integer n.
// Your task is to find the number of trailing zeros in n!.
// Example:
// trailingZeros(n: 10) == .success(2)
// trailingZeros(n: 100) == .success(24)
// trailingZeros(n: 1000) == .success(249)
// trailingZeros(n: 10000) == .success(495)
func trailingZeros(n: Int) -> Result<Int, Int> {
    guard n > 0 else {
        return .failure(n)
    }
    
    var n = n
    var zeros = 0
    
    while n % 10 == 0 {
        zeros += 1
        n /= 10
    }
    
    return .success(zeros)
}

// You are given a positive integer n.
// Your task is to find the number of trailing zeros in n!.
// Example:
// trailingZeros(n: 10) == .success(2)
// trailingZeros(n: 100) == .success(24)
// trailingZeros(n: 1000) == .success(249)
// trailingZeros(n: 10000) == .success(495)
func trailingZeros(n: Int) -> Result<Int, Int> {
    guard n > 0 else {
        return .failure(n)
    }
    
    var n = n
    var zeros = 0
    
    while n % 10 == 0 {
        zeros += 1
        n /= 10
    }
    
    return .success(zeros)
}

// You are given a positive integer n.
// Your task is to find the number of trailing zeros in n!.
// Example:
// trailingZeros(n: 10) == .success(2)
// trailingZeros(n: 100) == .success(24)
// trailingZeros(n: 1000) == .success(249)
// trailingZeros(n: 10000) == .success(495)
func trailingZeros(n: Int) -> Result<Int, Int> {
    guard n > 0 else {
        return .failure(n)
    }
    
    var n = n
    var
extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'

extension Int: Error {

}

extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    if n > m {
        return .failure(-1)
    }
    let avg = (n + m) / 2
    return .success(String(avg, radix: 2))
}

func firstNonRepeating(s: String) -> Int {
    var charCount = [Character: Int]()
    for char in s {
        charCount[char, default: 0] += 1
    }
    for (index, char) in s.enumerated() {
        if charCount[char] == 1 {
            return index
        }
    }
    return -1
}

func longestSubstring(s: String) -> String {
    var charCount = [Character: Int]()
    var longest = ""
    var current = ""
    for (index, char) in s.enumerated() {
        if let lastIndex = charCount[char] {
            if current.count > longest.count {
                longest = current
            }
            current = ""
            charCount = [:]
            charCount[char] = index
        } else {
            charCount[char] = index
            current += String(char)
        }
    }
    if current.count > longest.count {
        longest = current
    }
    return longest
}

func largestPairProduct(arr: [Int]) -> Int {
    var largest = 0
    for i in 0..<arr.count - 1 {
        if arr[i] * arr[i + 1] > largest {
            largest = arr[i] * arr[i + 1]
        }
    }
    return largest
}
```swift
extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    if n > m {
        return .failure(-1)
    }
    let avg = (n + m) / 2
    return .success(String(avg, radix: 2))
}

// Given a string, find the first non-repeating character in it and return its index.
// If it doesn't exist, return -1.
// Examples:
// firstNonRepeating("abacabad") == 4
// firstNonRepeating("abacabaabacaba") == -1
// firstNonRepeating("z") == 0
func firstNonRepeating(s: String) -> Int {
    var charCount = [Character: Int]()
    for char in s {
        charCount[char, default: 0] += 1
    }
    for (index, char) in s.enumerated() {
        if charCount[char] == 1 {
            return index
        }
    }
    return -1
}

// Given a string, find the longest substring without repeating characters.
// Examples:
// longestSubstring("abcabcbb") == "abc"
// longestSubstring("bbbbb") == "b"
// longestSubstring("pwwkew") == "wke"
func longestSubstring(s: String) -> String {
    var charCount = [Character: Int]()
    var longest = ""
    var current = ""
    for (index, char) in s.enumerated() {
        if let lastIndex = charCount[char] {
            if current.count > longest.count {
                longest = current
            }
            current = ""
            charCount = [:]
            charCount[char] = index
        } else {
            charCount[char] = index
            current += String(char)
        }
    }
    if current.count > longest.count {
        longest = current
    }
    return longest
}

// Given an array of integers, find the pair of adjacent elements that has the largest product and return that product.
// Example:
// largestPairProduct([3, 6, -2, -5, 7, 3]) == 21
// largestPairProduct([6, 1, 9, 5, 6, 7]) == 36
func largestPairProduct(arr: [Int]) -> Int {
    var largest = 0
    for i in 0..<arr.count - 1 {
        if arr[i] * arr[i + 1] > largest {
            largest = arr[i] * arr[i + 1]
        }
    }
    return largest
}

// Given an array of integers, find the pair of adjacent elements that has the largest product and return that product.
// Example:
// largestPairProduct([3, 6, -2, -5, 7, 3]) == 21
// largestPairProduct([6, 1, 9, 5, 6, 7]) == 36
func largestPairProduct(arr: [Int]) -> Int {
    var largest = 0
    for i in 0..<arr.count - 1 {
        if arr[i] * arr[i + 1] > largest {
            largest = arr[i] * arr[i + 1]
        }
    }
    return largest
}

// Given an array of integers, find the pair of adjacent elements that has the largest product and return that product.
// Example:
// largestPairProduct([3, 6, -2, -5, 7, 3]) == 21
// largestPairProduct([6, 1, 9, 5, 6, 7]) == 36
func largestPairProduct(arr: [Int]) -> Int {
    var largest = 0
    for i in 0..<arr.count - 1 {
        if arr[i] * arr[i + 1] > largest {
            largest = arr[i] * arr[i + 1]
        }
    }
    return largest
}

// Given an array of integers, find the pair of adjacent elements that has the largest product and return that product.
// Example:
// largestPairProduct([3, 6, -2, -5, 7, 3]) == 21
// largestPairProduct([6, 1, 9, 5, 6, 7]) == 36
func largestPairProduct(arr: [Int]) -> Int {
    var
extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'
if let lastIndex = charCount[char] { // value 'lastIndex' was defined but never used; consider replacing with boolean test

extension Int: Error {

}

extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    if n > m {
        return .failure(n)
    }
    
    var sum = 0
    for i in n...m {
        sum += i
    }
    
    let avg = Double(sum) / Double(m - n + 1)
    let rounded = Int(avg.rounded())
    
    return .success(String(rounded, radix: 2))
}

func trailingZeros(n: Int) -> Result<Int, Int> {
    var n = n
    var zeros = 0
    
    while n >= 5 {
        zeros += n / 5
        n /= 5
    }
    
    return .success(zeros)
}
```swift
extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    if n > m {
        return .failure(n)
    }
    
    var sum = 0
    for i in n...m {
        sum += i
    }
    
    let avg = Double(sum) / Double(m - n + 1)
    let rounded = Int(avg.rounded())
    
    return .success(String(rounded, radix: 2))
}

// You are given a positive integer n.
// Your task is to find the number of trailing zeros in n!.
// Example:
// trailingZeros(n: 10) == .success(2)
// trailingZeros(n: 20) == .success(4)
// trailingZeros(n: 50) == .success(14)
func trailingZeros(n: Int) -> Result<Int, Int> {
    var n = n
    var zeros = 0
    
    while n >= 5 {
        zeros += n / 5
        n /= 5
    }
    
    return .success(zeros)
}

// You are given a positive integer n.
// Your task is to find the number of trailing zeros in n!.
// Example:
// trailingZeros(n: 10) == .success(2)
// trailingZeros(n: 20) == .success(4)
// trailingZeros(n: 50) == .success(14)
func trailingZeros(n: Int) -> Result<Int, Int> {
    var n = n
    var zeros = 0
    
    while n >= 5 {
        zeros += n / 5
        n /= 5
    }
    
    return .success(zeros)
}

// You are given a positive integer n.
// Your task is to find the number of trailing zeros in n!.
// Example:
// trailingZeros(n: 10) == .success(2)
// trailingZeros(n: 20) == .success(4)
// trailingZeros(n: 50) == .success(14)
func trailingZeros(n: Int) -> Result<Int, Int> {
    var n = n
    var zeros = 0
    
    while n >= 5 {
        zeros += n / 5
        n /= 5
    }
    
    return .success(zeros)
}

// You are given a positive integer n.
// Your task is to find the number of trailing zeros in n!.
// Example:
// trailingZeros(n: 10) == .success(2)
// trailingZeros(n: 20) == .success(4)
// trailingZeros(n: 50) == .success(14)
func trailingZeros(n: Int) -> Result<Int, Int> {
    var n = n
    var zeros = 0
    
    while n >= 5 {
        zeros += n / 5
        n /= 5
    }
    
    return .success(zeros)
}

// You are given a positive integer n.
// Your task is to find the number of trailing zeros in n!.
// Example:
// trailingZeros(n: 10) == .success(2)
// trailingZeros(n: 20) == .success(4)
// trailingZeros(n: 50) == .success(14)
func trailingZeros(n: Int) -> Result<Int, Int> {
    var n = n
    var zeros = 0
    
    while n >= 5 {
        zeros += n / 5
        n /= 5
    }
    
    return .success(zeros)
}

// You are given a positive integer n.
// Your task is to find the number of trailing zeros in n!.
// Example:
// trailingZeros(n: 10) == .success(2)
// trailingZeros(n: 20) == .success(4)
// trailingZeros(n: 50) == .success(14)
func trailingZeros(n: Int) -> Result<Int, Int> {
    var n = n
    var zeros = 0
    
    while n >= 5 {
        zeros += n / 5
        n /= 5
    }
    
    return .success(zeros)
}

// You are given a positive integer n.
// Your task is to find the number of trailing zeros in n!.
// Example:
extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'

extension Int: Error {

}

extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    if n > m {
        return .failure(-1)
    }
    let avg = (n + m) / 2
    return .success(String(avg, radix: 2))
}

func findMissingPositive(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    for i in 1...arr.count {
        if arr[i - 1] != i {
            return i
        }
    }
    return arr.count + 1
}

func findMissingPositive2(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    for i in 1...arr.count {
        if arr[i - 1] != i {
            return i
        }
    }
    return arr.count + 1
}

func findMissingPositive3(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    for i in 1...arr.count {
        if arr[i - 1] != i {
            return i
        }
    }
    return arr.count + 1
}

func findMissingPositive4(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    for i in 1...arr.count {
        if arr[i - 1] != i {
            return i
        }
    }
    return arr.count + 1
}

func findMissingPositive5(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    for i in 1...arr.count {
        if arr[i - 1] != i {
            return i
        }
    }
    return arr.count + 1
}
```swift
extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    if n > m {
        return .failure(-1)
    }
    let avg = (n + m) / 2
    return .success(String(avg, radix: 2))
}

// Given an array of integers, find the first missing positive integer in linear
// time and constant space. In other words, find the lowest positive integer that
// is not in the array. The array can contain duplicates and negative numbers as
// well.
// For example, the input [3, 4, -1, 1] should give 2. The input [1, 2, 0] should give 3.
// You can modify the input array in-place.
func findMissingPositive(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    for i in 1...arr.count {
        if arr[i - 1] != i {
            return i
        }
    }
    return arr.count + 1
}

// Given an array of integers, find the first missing positive integer in linear
// time and constant space. In other words, find the lowest positive integer that
// is not in the array. The array can contain duplicates and negative numbers as
// well.
// For example, the input [3, 4, -1, 1] should give 2. The input [1, 2, 0] should give 3.
// You can modify the input array in-place.
func findMissingPositive2(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    for i in 1...arr.count {
        if arr[i - 1] != i {
            return i
        }
    }
    return arr.count + 1
}

// Given an array of integers, find the first missing positive integer in linear
// time and constant space. In other words, find the lowest positive integer that
// is not in the array. The array can contain duplicates and negative numbers as
// well.
// For example, the input [3, 4, -1, 1] should give 2. The input [1, 2, 0] should give 3.
// You can modify the input array in-place.
func findMissingPositive3(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    for i in 1...arr.count {
        if arr[i - 1] != i {
            return i
        }
    }
    return arr.count + 1
}

// Given an array of integers, find the first missing positive integer in linear
// time and constant space. In other words, find the lowest positive integer that
// is not in the array. The array can contain duplicates and negative numbers as
// well.
// For example, the input [3, 4, -1, 1] should give 2. The input [1, 2, 0] should give 3.
// You can modify the input array in-place.
func findMissingPositive4(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    for i in 1...arr.count {
        if arr[i - 1] != i {
            return i
        }
    }
    return arr.count + 1
}

// Given an array of integers, find the first missing positive integer in linear
// time and constant space. In other words, find the lowest positive integer that
// is not in the array. The array can contain duplicates and negative numbers as
// well.
// For example, the input [3, 4, -1, 1] should give 2. The input [1, 2, 0] should give 3.
// You can modify the input array in-place.
func findMissingPositive5(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    for i in 1...arr.count {
        if arr[i - 1] != i {
            return i
        }
    }
    return arr.count + 1
}

// Given an array of integers, find the first missing positive integer in linear
// time and constant space. In other words, find the lowest positive integer that
// is not in the array. The array can contain duplicates and negative numbers as
// well.
// For example, the input [3, 4, -1, 1] should give 2. The input [1
extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'

extension Int: Error {

}

extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    if n > m {
        return .failure(n)
    }
    
    let avg = (n + m) / 2
    let bin = String(avg, radix: 2)
    return .success(bin)
}

func reverseWords(s: String) -> String {
    let words = s.split(separator: " ")
    var result = ""
    for word in words {
        var reversedWord = ""
        for char in word.reversed() {
            reversedWord += String(char)
        }
        result += reversedWord + " "
    }
    return String(result.dropLast())
}

func sortedSquares(nums: [Int]) -> [Int] {
    var result = [Int]()
    for num in nums {
        result.append(num * num)
    }
    result.sort()
    return result
}

func moveZeroes(nums: [Int]) -> [Int] {
    var result = [Int]()
    for num in nums {
        if num != 0 {
            result.append(num)
        }
    }
    for _ in result.count..<nums.count {
        result.append(0)
    }
    return result
}

func maxSubArray(nums: [Int]) -> Int {
    var maxSum = nums[0]
    var currentSum = nums[0]
    for i in 1..<nums.count {
        currentSum = max(nums[i], currentSum + nums[i])
        maxSum = max(maxSum, currentSum)
    }
    return maxSum
}

func maxProduct(nums: [Int]) -> Int {
    var maxProduct = nums[0]
    var currentProduct = nums[0]
    for i in 1..<nums.count {
        currentProduct = max(nums[i], currentProduct * nums[i])
        maxProduct = max(maxProduct, currentProduct)
    }
    return maxProduct
}
```swift
extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    if n > m {
        return .failure(n)
    }
    
    let avg = (n + m) / 2
    let bin = String(avg, radix: 2)
    return .success(bin)
}

// Given a string, you need to reverse the order of characters in each word within a sentence while still preserving whitespace and initial word order.
// Example:
// reverseWords("Let's take LeetCode contest") -> "s'teL ekat edoCteeL tsetnoc"
// reverseWords("God Ding") -> "doG gniD"
func reverseWords(s: String) -> String {
    let words = s.split(separator: " ")
    var result = ""
    for word in words {
        var reversedWord = ""
        for char in word.reversed() {
            reversedWord += String(char)
        }
        result += reversedWord + " "
    }
    return String(result.dropLast())
}

// Given an integer array nums sorted in non-decreasing order, return an array of the squares of each number sorted in non-decreasing order.
// Example:
// sortedSquares([-4,-1,0,3,10]) == [0,1,9,16,100]
// sortedSquares([-7,-3,2,3,11]) == [4,9,9,49,121]
func sortedSquares(nums: [Int]) -> [Int] {
    var result = [Int]()
    for num in nums {
        result.append(num * num)
    }
    result.sort()
    return result
}

// Given an integer array nums, move all 0's to the end of it while maintaining the relative order of the non-zero elements.
// Example:
// moveZeroes([0,1,0,3,12]) == [1,3,12,0,0]
// moveZeroes([0]) == [0]
func moveZeroes(nums: [Int]) -> [Int] {
    var result = [Int]()
    for num in nums {
        if num != 0 {
            result.append(num)
        }
    }
    for _ in result.count..<nums.count {
        result.append(0)
    }
    return result
}

// Given an integer array nums, find the contiguous subarray (containing at least one number) which has the largest sum and return its sum.
// Example:
// maxSubArray([-2,1,-3,4,-1,2,1,-5,4]) == 6
// maxSubArray([1]) == 1
// maxSubArray([5,4,-1,7,8]) == 23
func maxSubArray(nums: [Int]) -> Int {
    var maxSum = nums[0]
    var currentSum = nums[0]
    for i in 1..<nums.count {
        currentSum = max(nums[i], currentSum + nums[i])
        maxSum = max(maxSum, currentSum)
    }
    return maxSum
}

// Given an integer array nums, find the contiguous subarray (containing at least one number) which has the largest product and return its product.
// Example:
// maxProduct([-2,3,-4]) == 24
// maxProduct([-2,0,-1]) == 0
// maxProduct([2,3,-2,4]) == 6
func maxProduct(nums: [Int]) -> Int {
    var maxProduct = nums[0]
    var currentProduct = nums[0]
    for i in 1..<nums.count {
        currentProduct = max(nums[i], currentProduct * nums[i])
        maxProduct = max(maxProduct, currentProduct)
    }
    return maxProduct
}

// Given an integer array nums, find the contiguous subarray (containing at least one number) which has the largest sum and return its sum.
// Example:
// maxSubArray([-2,1,-3,4,-1,2,1,-5,4]) == 6
// maxSubArray([1]) == 1
// maxSubArray([5,4,-1,7,8]) == 23
func maxSubArray(nums: [Int]) -> Int {
    var maxSum = nums[0]
    var currentSum = nums[0]
    for i in 1..<nums.count {
        currentSum =
extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'

extension Int: Error {

}

extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    if n > m {
        return .failure(n)
    }
    let avg = (n + m) / 2
    let binary = String(avg, radix: 2)
    return .success(binary)
}

func findMissingPositive(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    var i = 0
    while i < arr.count {
        if arr[i] == i + 1 {
            i += 1
        } else {
            return i + 1
        }
    }
    return i + 1
}

func findMissingPositive2(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    var i = 0
    while i < arr.count {
        if arr[i] == i + 1 {
            i += 1
        } else {
            return i + 1
        }
    }
    return i + 1
}

func findMissingPositive3(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    var i = 0
    while i < arr.count {
        if arr[i] == i + 1 {
            i += 1
        } else {
            return i + 1
        }
    }
    return i + 1
}

func findMissingPositive4(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    var i = 0
    while i < arr.count {
        if arr[i] == i + 1 {
            i += 1
        } else {
            return i + 1
        }
    }
    return i + 1
}
```swift
extension Int: Error {}

// You are given two positive integers n and m, and your task is to compute the
// average of the integers from n through m (including n and m). 
// Round the answer to the nearest integer and convert that to binary.
// If n is greater than m, return -1.
// Example:
// roundedAvg(n: 1, m: 5) == .success("0b11")
// roundedAvg(n: 7, m: 5) == .failure(-1)
// roundedAvg(n: 10, m: 20) == .success("0b1111")
// roundedAvg(n: 20, m: 33) == .success("0b11010")
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
    if n > m {
        return .failure(n)
    }
    let avg = (n + m) / 2
    let binary = String(avg, radix: 2)
    return .success(binary)
}

// Given an array of integers, find the first missing positive integer in
// linear time and constant space. In other words, find the lowest positive
// integer that does not exist in the array. The array can contain duplicates
// and negative numbers as well.
// For example, the input [3, 4, -1, 1] should give 2. The input [1, 2, 0]
// should give 3.
// You can modify the input array in-place.
func findMissingPositive(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    var i = 0
    while i < arr.count {
        if arr[i] == i + 1 {
            i += 1
        } else {
            return i + 1
        }
    }
    return i + 1
}

// Given an array of integers, find the first missing positive integer in
// linear time and constant space. In other words, find the lowest positive
// integer that does not exist in the array. The array can contain duplicates
// and negative numbers as well.
// For example, the input [3, 4, -1, 1] should give 2. The input [1, 2, 0]
// should give 3.
// You can modify the input array in-place.
func findMissingPositive2(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    var i = 0
    while i < arr.count {
        if arr[i] == i + 1 {
            i += 1
        } else {
            return i + 1
        }
    }
    return i + 1
}

// Given an array of integers, find the first missing positive integer in
// linear time and constant space. In other words, find the lowest positive
// integer that does not exist in the array. The array can contain duplicates
// and negative numbers as well.
// For example, the input [3, 4, -1, 1] should give 2. The input [1, 2, 0]
// should give 3.
// You can modify the input array in-place.
func findMissingPositive3(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    var i = 0
    while i < arr.count {
        if arr[i] == i + 1 {
            i += 1
        } else {
            return i + 1
        }
    }
    return i + 1
}

// Given an array of integers, find the first missing positive integer in
// linear time and constant space. In other words, find the lowest positive
// integer that does not exist in the array. The array can contain duplicates
// and negative numbers as well.
// For example, the input [3, 4, -1, 1] should give 2. The input [1, 2, 0]
// should give 3.
// You can modify the input array in-place.
func findMissingPositive4(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    var i = 0
    while i < arr.count {
        if arr[i] == i + 1 {
            i += 1
        } else {
            return i + 1
        }
    }
    return i + 1
}

// Given an array of integers, find the first missing positive integer in
// linear time and constant space. In other words, find the lowest positive
// integer that does not exist in the array. The array can contain duplicates
// and negative numbers as well.
// For example, the input [3, 4, -1, 1] should give 2. The input [1, 2, 0]
// should give 3.
// You can modify the input array in-place.
func findMissingPositive5(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    var i = 0
    while i < arr.count {
        if arr[i] == i + 1 {
            i += 1
        } else {
            
extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'

func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        var temp = i
        var temp2 = 0
        while temp > 0 {
            temp2 = temp2 * 10 + temp % 10
            temp = temp / 10
        }
        if temp2 % 10 == 0 {
            result.append(i)
        }
    }
    return result.sorted()
}
```swift
// Given an array of positive integers x. return a sorted array of all 
// elements that hasn't any even digit.
// Note: Returned array should be sorted in increasing order.
// For example:
// uniqueDigits(x: [15, 33, 1422, 1]) == [1, 15, 33]
// uniqueDigits(x: [152, 323, 1422, 10]) == [] as [Int]
func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        var temp = i
        var temp2 = 0
        while temp > 0 {
            temp2 = temp2 * 10 + temp % 10
            temp = temp / 10
        }
        if temp2 % 10 == 0 {
            result.append(i)
        }
    }
    return result.sorted()
}
<|file_separator|>
 // XCTAssertTrue failed

func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        var temp = i
        var isUnique = true
        while temp > 0 {
            if (temp % 10) % 2 == 0 {
                isUnique = false
                break
            }
            temp /= 10
        }
        if isUnique {
            result.append(i)
        }
    }
    return result
}
```swift
// Given an array of positive integers x. return a sorted array of all 
// elements that hasn't any even digit.
// Note: Returned array should be sorted in increasing order.
// For example:
// uniqueDigits(x: [15, 33, 1422, 1]) == [1, 15, 33]
// uniqueDigits(x: [152, 323, 1422, 10]) == [] as [Int]
func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        var temp = i
        var isUnique = true
        while temp > 0 {
            if (temp % 10) % 2 == 0 {
                isUnique = false
                break
            }
            temp /= 10
        }
        if isUnique {
            result.append(i)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        var temp = i
        while temp > 0 {
            if temp % 10 == 0 {
                temp = temp / 10
            } else if temp % 10 == 2 || temp % 10 == 4 || temp % 10 == 6 || temp % 10 == 8 {
                temp = temp / 10
            } else {
                result.append(temp % 10)
                temp = temp / 10
            }
        }
    }
    return result.sorted()
}
```swift
// Given an array of positive integers x. return a sorted array of all 
// elements that hasn't any even digit.
// Note: Returned array should be sorted in increasing order.
// For example:
// uniqueDigits(x: [15, 33, 1422, 1]) == [1, 15, 33]
// uniqueDigits(x: [152, 323, 1422, 10]) == [] as [Int]
func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        var temp = i
        while temp > 0 {
            if temp % 10 == 0 {
                temp = temp / 10
            } else if temp % 10 == 2 || temp % 10 == 4 || temp % 10 == 6 || temp % 10 == 8 {
                temp = temp / 10
            } else {
                result.append(temp % 10)
                temp = temp / 10
            }
        }
    }
    return result.sorted()
}
<|file_separator|>
 // XCTAssertTrue failed

func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        if !hasEvenDigit(i) {
            result.append(i)
        }
    }
    return result.sorted()
}

func hasEvenDigit(_ x: Int) -> Bool {
    var x = x
    while x > 0 {
        if x % 10 % 2 == 0 {
            return true
        }
        x /= 10
    }
    return false
}
```swift
// Given an array of positive integers x. return a sorted array of all 
// elements that hasn't any even digit.
// Note: Returned array should be sorted in increasing order.
// For example:
// uniqueDigits(x: [15, 33, 1422, 1]) == [1, 15, 33]
// uniqueDigits(x: [152, 323, 1422, 10]) == [] as [Int]
func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        if !hasEvenDigit(i) {
            result.append(i)
        }
    }
    return result.sorted()
}

func hasEvenDigit(_ x: Int) -> Bool {
    var x = x
    while x > 0 {
        if x % 10 % 2 == 0 {
            return true
        }
        x /= 10
    }
    return false
}
<|file_separator|>

func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        if !hasEvenDigit(i) {
            result.append(i)
        }
    }
    return result.sorted()
}

func hasEvenDigit(_ x: Int) -> Bool {
    var x = x
    while x > 0 {
        if x % 10 % 2 == 0 {
            return true
        }
        x /= 10
    }
    return false
}

func reverseWords(s: String) -> String {
    var result = ""
    var words = [String]()
    var word = ""
    for i in s {
        if i == " " {
            words.append(word)
            word = ""
        } else {
            word += String(i)
        }
    }
    words.append(word)
    for i in 0..<words.count {
        if i == 0 {
            result += words[i]
        } else {
            result += " " + words[i]
        }
    }
    return result
}

func longestPalindrome(s: String) -> String {
    var result = ""
    for i in 0..<s.count {
        var left = i
        var right = i
        while left >= 0 && right < s.count && s[left] == s[right] {
            left -= 1
            right += 1
        }
        if right - left - 1 > result.count {
            result = s[left + 1..<right]
        }
        left = i
        right = i + 1
        while left >= 0 && right < s.count && s[left] == s[right] {
            left -= 1
            right += 1
        }
        if right - left - 1 > result.count {
            result = s[left + 1..<right]
        }
    }
    return result
}

func twoSum(nums: [Int], target: Int) -> [Int] {
    var result = [Int]()
    for i in 0..<nums.count {
        for j in i + 1..<nums.count {
            if nums[i] + nums[j] == target {
                result.append(i)
                result.append(j)
                return result
            }
        }
    }
    return result
}
```swift
// Given an array of positive integers x. return a sorted array of all 
// elements that hasn't any even digit.
// Note: Returned array should be sorted in increasing order.
// For example:
// uniqueDigits(x: [15, 33, 1422, 1]) == [1, 15, 33]
// uniqueDigits(x: [152, 323, 1422, 10]) == [] as [Int]
func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        if !hasEvenDigit(i) {
            result.append(i)
        }
    }
    return result.sorted()
}

func hasEvenDigit(_ x: Int) -> Bool {
    var x = x
    while x > 0 {
        if x % 10 % 2 == 0 {
            return true
        }
        x /= 10
    }
    return false
}

// Given a string s, reverse the order of characters in each word within a sentence while still preserving whitespace and initial word order.
// For example:
// reverseWords(s: "Let's take LeetCode contest") == "s'teL ekat edoCteeL tsetnoc"
// reverseWords(s: "God Ding") == "doG gniD"
func reverseWords(s: String) -> String {
    var result = ""
    var words = [String]()
    var word = ""
    for i in s {
        if i == " " {
            words.append(word)
            word = ""
        } else {
            word += String(i)
        }
    }
    words.append(word)
    for i in 0..<words.count {
        if i == 0 {
            result += words[i]
        } else {
            result += " " + words[i]
        }
    }
    return result
}

// Given a string s, find the longest palindromic substring in s.
// For example:
// longestPalindrome(s: "babad") == "bab"
// longestPalindrome(s: "cbbd") == "bb"
func longestPalindrome(s: String) -> String {
    var result = ""
    for i in 0..<s.count {
        var left = i
        var right = i
        while left >= 0 && right < s.count && s[left] == s[right] {
            left -= 1
            right += 1
        }
        if right - left - 1 > result.count {
            result = s[left + 1..<right]
        }
        left = i
        right = i + 1
        while left >= 0 && right < s.count && s[left] == s[right] {
            left -= 1
            right += 1
        }
        if right - left - 1 > result.count {
            result = s[left + 1..<right]
        }
    }
    return result
}

// Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target.
// You may assume that each input would have exactly one solution, and you may not use the same element twice.
// You can return the answer in any order.
// For example:
// twoSum(nums: [2, 7, 11, 15], target: 9) == [0, 1]
// twoSum(nums: [3, 2, 4], target: 6) == [1, 2]
// twoSum(nums: [3, 3], target: 6) == [0, 1]
func twoSum(nums: [Int], target: Int) -> [Int] {
    var result = [Int]()
    for i in 0..<nums.count {
        for j in i + 1..<nums.count {
            if nums[i] + nums[j] == target {
                result.append(i)
                result.append(j)
                return result
            }
        }
    }
    return result
}

// Given an integer array nums, find the contiguous subarray (containing at least one number) which has the largest sum and return its sum.
// For example:
// maxSubArray(nums: [-2, 1, -3, 4, -1, 2, 1, -5, 4]) == 6
// maxSubArray(nums: [1]) == 1
// maxSubArray(nums: [5, 4, -1, 7, 8]) == 23
func maxSubArray(nums: [Int]) -> Int {
    var result = nums[0]
    var current = nums[0]
    for i in 1..<nums.count {
        current = max(nums[i], current + nums[i])
while left >= 0 && right < s.count && s[left] == s[right] { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
while left >= 0 && right < s.count && s[left] == s[right] { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
result = s[left + 1..<right] // 'subscript(_:)' is unavailable: cannot subscript String with an integer range, use a String.Index range instead.
while left >= 0 && right < s.count && s[left] == s[right] { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
while left >= 0 && right < s.count && s[left] == s[right] { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
result = s[left + 1..<right] // 'subscript(_:)' is unavailable: cannot subscript String with an integer range, use a String.Index range instead.

func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        var temp = i
        while temp > 0 {
            if temp % 10 == 0 {
                temp = temp / 10
                continue
            }
            if temp % 10 == 2 || temp % 10 == 4 || temp % 10 == 6 || temp % 10 == 8 {
                temp = temp / 10
                continue
            }
            if temp % 10 == 1 || temp % 10 == 3 || temp % 10 == 5 || temp % 10 == 7 || temp % 10 == 9 {
                result.append(i)
                break
            }
            temp = temp / 10
        }
    }
    return result
}
```swift
// Given an array of positive integers x. return a sorted array of all 
// elements that hasn't any even digit.
// Note: Returned array should be sorted in increasing order.
// For example:
// uniqueDigits(x: [15, 33, 1422, 1]) == [1, 15, 33]
// uniqueDigits(x: [152, 323, 1422, 10]) == [] as [Int]
func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        var temp = i
        while temp > 0 {
            if temp % 10 == 0 {
                temp = temp / 10
                continue
            }
            if temp % 10 == 2 || temp % 10 == 4 || temp % 10 == 6 || temp % 10 == 8 {
                temp = temp / 10
                continue
            }
            if temp % 10 == 1 || temp % 10 == 3 || temp % 10 == 5 || temp % 10 == 7 || temp % 10 == 9 {
                result.append(i)
                break
            }
            temp = temp / 10
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        var temp = i
        while temp > 0 {
            if (temp % 10) % 2 == 0 {
                break
            }
            temp = temp / 10
        }
        if temp == 0 {
            result.append(i)
        }
    }
    return result
}
```swift
// Given an array of positive integers x. return a sorted array of all 
// elements that hasn't any even digit.
// Note: Returned array should be sorted in increasing order.
// For example:
// uniqueDigits(x: [15, 33, 1422, 1]) == [1, 15, 33]
// uniqueDigits(x: [152, 323, 1422, 10]) == [] as [Int]
func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        var temp = i
        while temp > 0 {
            if (temp % 10) % 2 == 0 {
                break
            }
            temp = temp / 10
        }
        if temp == 0 {
            result.append(i)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        var temp = i
        while temp > 0 {
            if temp % 10 == 0 {
                temp = temp / 10
            } else if temp % 10 == 2 || temp % 10 == 4 || temp % 10 == 6 || temp % 10 == 8 {
                temp = temp / 10
            } else {
                result.append(temp % 10)
                temp = temp / 10
            }
        }
    }
    return result.sorted()
}
```swift
// Given an array of positive integers x. return a sorted array of all 
// elements that hasn't any even digit.
// Note: Returned array should be sorted in increasing order.
// For example:
// uniqueDigits(x: [15, 33, 1422, 1]) == [1, 15, 33]
// uniqueDigits(x: [152, 323, 1422, 10]) == [] as [Int]
func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        var temp = i
        while temp > 0 {
            if temp % 10 == 0 {
                temp = temp / 10
            } else if temp % 10 == 2 || temp % 10 == 4 || temp % 10 == 6 || temp % 10 == 8 {
                temp = temp / 10
            } else {
                result.append(temp % 10)
                temp = temp / 10
            }
        }
    }
    return result.sorted()
}
<|file_separator|>
 // XCTAssertTrue failed

func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        var temp = i
        var temp2 = 0
        while temp > 0 {
            temp2 = temp2 * 10 + temp % 10
            temp = temp / 10
        }
        if temp2 % 10 == 0 {
            result.append(i)
        }
    }
    return result.sorted()
}
```swift
// Given an array of positive integers x. return a sorted array of all 
// elements that hasn't any even digit.
// Note: Returned array should be sorted in increasing order.
// For example:
// uniqueDigits(x: [15, 33, 1422, 1]) == [1, 15, 33]
// uniqueDigits(x: [152, 323, 1422, 10]) == [] as [Int]
func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        var temp = i
        var temp2 = 0
        while temp > 0 {
            temp2 = temp2 * 10 + temp % 10
            temp = temp / 10
        }
        if temp2 % 10 == 0 {
            result.append(i)
        }
    }
    return result.sorted()
}
<|file_separator|>
 // XCTAssertTrue failed

func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        if !hasEvenDigit(i) {
            result.append(i)
        }
    }
    return result.sorted()
}

func hasEvenDigit(_ x: Int) -> Bool {
    var x = x
    while x > 0 {
        if x % 10 % 2 == 0 {
            return true
        }
        x /= 10
    }
    return false
}
```swift
// Given an array of positive integers x. return a sorted array of all 
// elements that hasn't any even digit.
// Note: Returned array should be sorted in increasing order.
// For example:
// uniqueDigits(x: [15, 33, 1422, 1]) == [1, 15, 33]
// uniqueDigits(x: [152, 323, 1422, 10]) == [] as [Int]
func uniqueDigits(x: [Int]) -> [Int] {
    var result = [Int]()
    for i in x {
        if !hasEvenDigit(i) {
            result.append(i)
        }
    }
    return result.sorted()
}

func hasEvenDigit(_ x: Int) -> Bool {
    var x = x
    while x > 0 {
        if x % 10 % 2 == 0 {
            return true
        }
        x /= 10
    }
    return false
}
<|file_separator|>

func byLength(arr: [Int]) -> [String] {
    var arr = arr
    var result = [String]()
    var temp = [Int]()
    for i in 0..<arr.count {
        if arr[i] > 0 && arr[i] < 10 {
            temp.append(arr[i])
        }
    }
    temp.sort()
    for i in 0..<temp.count {
        if temp[i] == 1 {
            result.append("One")
        } else if temp[i] == 2 {
            result.append("Two")
        } else if temp[i] == 3 {
            result.append("Three")
        } else if temp[i] == 4 {
            result.append("Four")
        } else if temp[i] == 5 {
            result.append("Five")
        } else if temp[i] == 6 {
            result.append("Six")
        } else if temp[i] == 7 {
            result.append("Seven")
        } else if temp[i] == 8 {
            result.append("Eight")
        } else if temp[i] == 9 {
            result.append("Nine")
        }
    }
    return result
}
```swift
// Given an array of integers, sort the integers that are between 1 and 9 inclusive,
// reverse the resulting array, and then replace each digit by its corresponding name from
// "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine".
// For example:
// If the array is empty, return an empty array:
// If the array has any strange number ignore it:
// byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3]) == ["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"]
// byLength(arr: [] as [Int]) == [] as [String]
// byLength(arr: [1, -1, 55]) == ["One"]
func byLength(arr: [Int]) -> [String] {
    var arr = arr
    var result = [String]()
    var temp = [Int]()
    for i in 0..<arr.count {
        if arr[i] > 0 && arr[i] < 10 {
            temp.append(arr[i])
        }
    }
    temp.sort()
    for i in 0..<temp.count {
        if temp[i] == 1 {
            result.append("One")
        } else if temp[i] == 2 {
            result.append("Two")
        } else if temp[i] == 3 {
            result.append("Three")
        } else if temp[i] == 4 {
            result.append("Four")
        } else if temp[i] == 5 {
            result.append("Five")
        } else if temp[i] == 6 {
            result.append("Six")
        } else if temp[i] == 7 {
            result.append("Seven")
        } else if temp[i] == 8 {
            result.append("Eight")
        } else if temp[i] == 9 {
            result.append("Nine")
        }
    }
    return result
}
<|file_separator|>
var arr = arr // variable 'arr' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

```swift
// Given an array of integers, sort the integers that are between 1 and 9 inclusive,
// reverse the resulting array, and then replace each digit by its corresponding name from
// "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine".
// For example:
// If the array is empty, return an empty array:
// If the array has any strange number ignore it:
// byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3]) == ["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"]
// byLength(arr: [] as [Int]) == [] as [String]
// byLength(arr: [1, -1, 55]) == ["One"]
func byLength(arr: [Int]) -> [String] {
    var arr = arr
    var result = [String]()
    var temp = [Int]()
    var temp2 = [Int]()
    var temp3 = [Int]()
    var temp4 = [Int]()
    var temp5 = [Int]()
    var temp6 = [Int]()
    var temp7 = [Int]()
    var temp8 = [Int]()
    var temp9 = [Int]()
    var temp10 = [Int]()
    var temp11 = [Int]()
    var temp12 = [Int]()
    var temp13 = [Int]()
    var temp14 = [Int]()
    var temp15 = [Int]()
    var temp16 = [Int]()
    var temp17 = [Int]()
    var temp18 = [Int]()
    var temp19 = [Int]()
    var temp20 = [Int]()
    var temp21 = [Int]()
    var temp22 = [Int]()
    var temp23 = [Int]()
    var temp24 = [Int]()
    var temp25 = [Int]()
    var temp26 = [Int]()
    var temp27 = [Int]()
    var temp28 = [Int]()
    var temp29 = [Int]()
    var temp30 = [Int]()
    var temp31 = [Int]()
    var temp32 = [Int]()
    var temp33 = [Int]()
    var temp34 = [Int]()
    var temp35 = [Int]()
    var temp36 = [Int]()
    var temp37 = [Int]()
    var temp38 = [Int]()
    var temp39 = [Int]()
    var temp40 = [Int]()
    var temp41 = [Int]()
    var temp42 = [Int]()
    var temp43 = [Int]()
    var temp44 = [Int]()
    var temp45 = [Int]()
    var temp46 = [Int]()
    var temp47 = [Int]()
    var temp48 = [Int]()
    var temp49 = [Int]()
    var temp50 = [Int]()
    var temp51 = [Int]()
    var temp52 = [Int]()
    var temp53 = [Int]()
    var temp54 = [Int]()
    var temp55 = [Int]()
    var temp56 = [Int]()
    var temp57 = [Int]()
    var temp58 = [Int]()
    var temp59 = [Int]()
    var temp60 = [Int]()
    var temp61 = [Int]()
    var temp62 = [Int]()
    var temp63 = [Int]()
    var temp64 = [Int]()
    var temp65 = [Int]()
    var temp66 = [Int]()
    var temp67 = [Int]()
    var temp68 = [Int]()
    var temp69 = [Int]()
    var temp70 = [Int]()
    var temp71 = [Int]()
    var temp72 = [Int]()
    var temp73 = [Int]()
    var temp74 = [Int]()
    var temp75 = [Int]()
    var temp76 = [Int]()
    var temp77 = [Int]()
    var temp78 = [Int]()
    var temp79 = [Int]()
    var temp80 = [Int]()
    var temp81 = [Int]()
    var temp82 = [Int]()
    var temp83 = [Int]()
    var temp84 = [Int]()
    var temp85 = [Int]()
    var temp86 = [Int]()
    var temp87 = [Int]()
    var temp88 = [Int]()
    var temp89 = [Int]()
    var temp90 = [Int]()
    var temp91 = [Int]()
    var temp92 = [Int]()
    var temp93 = [Int]()
    var temp94 = [Int]()
    var temp95 = [Int]()
    var temp96 = [Int]()
    var temp97 = [Int]()
    var temp98 = [Int]()
    var temp99 = [Int]()
    var temp100 = [Int]()
    var temp101 = [Int]()
    var temp102 =
XCTAssertTrue(byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3]) == ["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"]) // cannot find 'byLength' in scope
XCTAssertTrue(byLength(arr: [] as [Int]) == [] as [String]) // cannot find 'byLength' in scope
XCTAssertTrue(byLength(arr: [1, -1, 55]) == ["One"]) // cannot find 'byLength' in scope
XCTAssertTrue(byLength(arr: [1, -1, 3, 2]) == ["Three", "Two", "One"]) // cannot find 'byLength' in scope
XCTAssertTrue(byLength(arr: [9, 4, 8]) == ["Nine", "Eight", "Four"]) // cannot find 'byLength' in scope

func byLength(arr: [Int]) -> [String] {
    var arr = arr
    var result = [String]()
    var temp = [Int]()
    for i in 0..<arr.count {
        if arr[i] > 0 && arr[i] < 10 {
            temp.append(arr[i])
        }
    }
    temp.sort()
    for i in 0..<temp.count {
        if temp[i] == 1 {
            result.append("One")
        } else if temp[i] == 2 {
            result.append("Two")
        } else if temp[i] == 3 {
            result.append("Three")
        } else if temp[i] == 4 {
            result.append("Four")
        } else if temp[i] == 5 {
            result.append("Five")
        } else if temp[i] == 6 {
            result.append("Six")
        } else if temp[i] == 7 {
            result.append("Seven")
        } else if temp[i] == 8 {
            result.append("Eight")
        } else if temp[i] == 9 {
            result.append("Nine")
        }
    }
    return result
}
```swift
// Given an array of integers, sort the integers that are between 1 and 9 inclusive,
// reverse the resulting array, and then replace each digit by its corresponding name from
// "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine".
// For example:
// If the array is empty, return an empty array:
// If the array has any strange number ignore it:
// byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3]) == ["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"]
// byLength(arr: [] as [Int]) == [] as [String]
// byLength(arr: [1, -1, 55]) == ["One"]
func byLength(arr: [Int]) -> [String] {
    var arr = arr
    var result = [String]()
    var temp = [Int]()
    for i in 0..<arr.count {
        if arr[i] > 0 && arr[i] < 10 {
            temp.append(arr[i])
        }
    }
    temp.sort()
    for i in 0..<temp.count {
        if temp[i] == 1 {
            result.append("One")
        } else if temp[i] == 2 {
            result.append("Two")
        } else if temp[i] == 3 {
            result.append("Three")
        } else if temp[i] == 4 {
            result.append("Four")
        } else if temp[i] == 5 {
            result.append("Five")
        } else if temp[i] == 6 {
            result.append("Six")
        } else if temp[i] == 7 {
            result.append("Seven")
        } else if temp[i] == 8 {
            result.append("Eight")
        } else if temp[i] == 9 {
            result.append("Nine")
        }
    }
    return result
}
<|file_separator|>
var arr = arr // variable 'arr' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func byLength(arr: [Int]) -> [String] {
    var result: [String] = []
    for i in 1...9 {
        result.append(String(i))
    }
    var arr = arr
    arr.sort()
    var arr2 = arr.map {
        if $0 > 9 {
            return result[$0 - 10]
        } else {
            return String($0)
        }
    }
    arr2.reverse()
    return arr2
}
```swift
// Given an array of integers, sort the integers that are between 1 and 9 inclusive,
// reverse the resulting array, and then replace each digit by its corresponding name from
// "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine".
// For example:
// If the array is empty, return an empty array:
// If the array has any strange number ignore it:
// byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3]) == ["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"]
// byLength(arr: [] as [Int]) == [] as [String]
// byLength(arr: [1, -1, 55]) == ["One"]
func byLength(arr: [Int]) -> [String] {
    var result: [String] = []
    for i in 1...9 {
        result.append(String(i))
    }
    var arr = arr
    arr.sort()
    var arr2 = arr.map {
        if $0 > 9 {
            return result[$0 - 10]
        } else {
            return String($0)
        }
    }
    arr2.reverse()
    return arr2
}
<|file_separator|>
 // XCTAssertTrue failed

```swift
// Given an array of integers, sort the integers that are between 1 and 9 inclusive,
// reverse the resulting array, and then replace each digit by its corresponding name from
// "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine".
// For example:
// If the array is empty, return an empty array:
// If the array has any strange number ignore it:
// byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3]) == ["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"]
// byLength(arr: [] as [Int]) == [] as [String]
// byLength(arr: [1, -1, 55]) == ["One"]
func byLength(arr: [Int]) -> [String] {
    var arr = arr
    var result = [String]()
    var temp = [Int]()
    var temp2 = [Int]()
    var temp3 = [Int]()
    var temp4 = [Int]()
    var temp5 = [Int]()
    var temp6 = [Int]()
    var temp7 = [Int]()
    var temp8 = [Int]()
    var temp9 = [Int]()
    var temp10 = [Int]()
    var temp11 = [Int]()
    var temp12 = [Int]()
    var temp13 = [Int]()
    var temp14 = [Int]()
    var temp15 = [Int]()
    var temp16 = [Int]()
    var temp17 = [Int]()
    var temp18 = [Int]()
    var temp19 = [Int]()
    var temp20 = [Int]()
    var temp21 = [Int]()
    var temp22 = [Int]()
    var temp23 = [Int]()
    var temp24 = [Int]()
    var temp25 = [Int]()
    var temp26 = [Int]()
    var temp27 = [Int]()
    var temp28 = [Int]()
    var temp29 = [Int]()
    var temp30 = [Int]()
    var temp31 = [Int]()
    var temp32 = [Int]()
    var temp33 = [Int]()
    var temp34 = [Int]()
    var temp35 = [Int]()
    var temp36 = [Int]()
    var temp37 = [Int]()
    var temp38 = [Int]()
    var temp39 = [Int]()
    var temp40 = [Int]()
    var temp41 = [Int]()
    var temp42 = [Int]()
    var temp43 = [Int]()
    var temp44 = [Int]()
    var temp45 = [Int]()
    var temp46 = [Int]()
    var temp47 = [Int]()
    var temp48 = [Int]()
    var temp49 = [Int]()
    var temp50 = [Int]()
    var temp51 = [Int]()
    var temp52 = [Int]()
    var temp53 = [Int]()
    var temp54 = [Int]()
    var temp55 = [Int]()
    var temp56 = [Int]()
    var temp57 = [Int]()
    var temp58 = [Int]()
    var temp59 = [Int]()
    var temp60 = [Int]()
    var temp61 = [Int]()
    var temp62 = [Int]()
    var temp63 = [Int]()
    var temp64 = [Int]()
    var temp65 = [Int]()
    var temp66 = [Int]()
    var temp67 = [Int]()
    var temp68 = [Int]()
    var temp69 = [Int]()
    var temp70 = [Int]()
    var temp71 = [Int]()
    var temp72 = [Int]()
    var temp73 = [Int]()
    var temp74 = [Int]()
    var temp75 = [Int]()
    var temp76 = [Int]()
    var temp77 = [Int]()
    var temp78 = [Int]()
    var temp79 = [Int]()
    var temp80 = [Int]()
    var temp81 = [Int]()
    var temp82 = [Int]()
    var temp83 = [Int]()
    var temp84 = [Int]()
    var temp85 = [Int]()
    var temp86 = [Int]()
    var temp87 = [Int]()
    var temp88 = [Int]()
    var temp89 = [Int]()
    var temp90 = [Int]()
    var temp91 = [Int]()
    var temp92 = [Int]()
    var temp93 = [Int]()
    var temp94 = [Int]()
    var temp95 = [Int]()
    var temp96 = [Int]()
    var temp97 = [Int]()
    var temp98 = [Int]()
    var temp99 = [Int]()
    var temp100 = [Int]()
    var temp101 = [Int]()
    var temp102 =
XCTAssertTrue(byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3]) == ["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"]) // cannot find 'byLength' in scope
XCTAssertTrue(byLength(arr: [] as [Int]) == [] as [String]) // cannot find 'byLength' in scope
XCTAssertTrue(byLength(arr: [1, -1, 55]) == ["One"]) // cannot find 'byLength' in scope
XCTAssertTrue(byLength(arr: [1, -1, 3, 2]) == ["Three", "Two", "One"]) // cannot find 'byLength' in scope
XCTAssertTrue(byLength(arr: [9, 4, 8]) == ["Nine", "Eight", "Four"]) // cannot find 'byLength' in scope

func byLength(arr: [Int]) -> [String] {
    var arr = arr
    var result = [String]()
    var temp = [Int]()
    for i in 0..<arr.count {
        if arr[i] >= 1 && arr[i] <= 9 {
            temp.append(arr[i])
        }
    }
    temp.sort()
    for i in 0..<temp.count {
        if temp[i] == 1 {
            result.append("One")
        } else if temp[i] == 2 {
            result.append("Two")
        } else if temp[i] == 3 {
            result.append("Three")
        } else if temp[i] == 4 {
            result.append("Four")
        } else if temp[i] == 5 {
            result.append("Five")
        } else if temp[i] == 6 {
            result.append("Six")
        } else if temp[i] == 7 {
            result.append("Seven")
        } else if temp[i] == 8 {
            result.append("Eight")
        } else if temp[i] == 9 {
            result.append("Nine")
        }
    }
    return result
}
```swift
// Given an array of integers, sort the integers that are between 1 and 9 inclusive,
// reverse the resulting array, and then replace each digit by its corresponding name from
// "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine".
// For example:
// If the array is empty, return an empty array:
// If the array has any strange number ignore it:
// byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3]) == ["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"]
// byLength(arr: [] as [Int]) == [] as [String]
// byLength(arr: [1, -1, 55]) == ["One"]
func byLength(arr: [Int]) -> [String] {
    var arr = arr
    var result = [String]()
    var temp = [Int]()
    for i in 0..<arr.count {
        if arr[i] >= 1 && arr[i] <= 9 {
            temp.append(arr[i])
        }
    }
    temp.sort()
    for i in 0..<temp.count {
        if temp[i] == 1 {
            result.append("One")
        } else if temp[i] == 2 {
            result.append("Two")
        } else if temp[i] == 3 {
            result.append("Three")
        } else if temp[i] == 4 {
            result.append("Four")
        } else if temp[i] == 5 {
            result.append("Five")
        } else if temp[i] == 6 {
            result.append("Six")
        } else if temp[i] == 7 {
            result.append("Seven")
        } else if temp[i] == 8 {
            result.append("Eight")
        } else if temp[i] == 9 {
            result.append("Nine")
        }
    }
    return result
}
<|file_separator|>
var arr = arr // variable 'arr' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

```swift
// Given an array of integers, sort the integers that are between 1 and 9 inclusive,
// reverse the resulting array, and then replace each digit by its corresponding name from
// "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine".
// For example:
// If the array is empty, return an empty array:
// If the array has any strange number ignore it:
// byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3]) == ["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"]
// byLength(arr: [] as [Int]) == [] as [String]
// byLength(arr: [1, -1, 55]) == ["One"]
func byLength(arr: [Int]) -> [String] {
    var arr = arr
    var result = [String]()
    var temp = [Int]()
    var temp2 = [Int]()
    var temp3 = [Int]()
    var temp4 = [Int]()
    var temp5 = [Int]()
    var temp6 = [Int]()
    var temp7 = [Int]()
    var temp8 = [Int]()
    var temp9 = [Int]()
    var temp10 = [Int]()
    var temp11 = [Int]()
    var temp12 = [Int]()
    var temp13 = [Int]()
    var temp14 = [Int]()
    var temp15 = [Int]()
    var temp16 = [Int]()
    var temp17 = [Int]()
    var temp18 = [Int]()
    var temp19 = [Int]()
    var temp20 = [Int]()
    var temp21 = [Int]()
    var temp22 = [Int]()
    var temp23 = [Int]()
    var temp24 = [Int]()
    var temp25 = [Int]()
    var temp26 = [Int]()
    var temp27 = [Int]()
    var temp28 = [Int]()
    var temp29 = [Int]()
    var temp30 = [Int]()
    var temp31 = [Int]()
    var temp32 = [Int]()
    var temp33 = [Int]()
    var temp34 = [Int]()
    var temp35 = [Int]()
    var temp36 = [Int]()
    var temp37 = [Int]()
    var temp38 = [Int]()
    var temp39 = [Int]()
    var temp40 = [Int]()
    var temp41 = [Int]()
    var temp42 = [Int]()
    var temp43 = [Int]()
    var temp44 = [Int]()
    var temp45 = [Int]()
    var temp46 = [Int]()
    var temp47 = [Int]()
    var temp48 = [Int]()
    var temp49 = [Int]()
    var temp50 = [Int]()
    var temp51 = [Int]()
    var temp52 = [Int]()
    var temp53 = [Int]()
    var temp54 = [Int]()
    var temp55 = [Int]()
    var temp56 = [Int]()
    var temp57 = [Int]()
    var temp58 = [Int]()
    var temp59 = [Int]()
    var temp60 = [Int]()
    var temp61 = [Int]()
    var temp62 = [Int]()
    var temp63 = [Int]()
    var temp64 = [Int]()
    var temp65 = [Int]()
    var temp66 = [Int]()
    var temp67 = [Int]()
    var temp68 = [Int]()
    var temp69 = [Int]()
    var temp70 = [Int]()
    var temp71 = [Int]()
    var temp72 = [Int]()
    var temp73 = [Int]()
    var temp74 = [Int]()
    var temp75 = [Int]()
    var temp76 = [Int]()
    var temp77 = [Int]()
    var temp78 = [Int]()
    var temp79 = [Int]()
    var temp80 = [Int]()
    var temp81 = [Int]()
    var temp82 = [Int]()
    var temp83 = [Int]()
    var temp84 = [Int]()
    var temp85 = [Int]()
    var temp86 = [Int]()
    var temp87 = [Int]()
    var temp88 = [Int]()
    var temp89 = [Int]()
    var temp90 = [Int]()
    var temp91 = [Int]()
    var temp92 = [Int]()
    var temp93 = [Int]()
    var temp94 = [Int]()
    var temp95 = [Int]()
    var temp96 = [Int]()
    var temp97 = [Int]()
    var temp98 = [Int]()
    var temp99 = [Int]()
    var temp100 = [Int]()
    var temp101 = [Int]()
    var temp102 =
XCTAssertTrue(byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3]) == ["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"]) // cannot find 'byLength' in scope
XCTAssertTrue(byLength(arr: [] as [Int]) == [] as [String]) // cannot find 'byLength' in scope
XCTAssertTrue(byLength(arr: [1, -1, 55]) == ["One"]) // cannot find 'byLength' in scope
XCTAssertTrue(byLength(arr: [1, -1, 3, 2]) == ["Three", "Two", "One"]) // cannot find 'byLength' in scope
XCTAssertTrue(byLength(arr: [9, 4, 8]) == ["Nine", "Eight", "Four"]) // cannot find 'byLength' in scope

```swift
// Given an array of integers, sort the integers that are between 1 and 9 inclusive,
// reverse the resulting array, and then replace each digit by its corresponding name from
// "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine".
// For example:
// If the array is empty, return an empty array:
// If the array has any strange number ignore it:
// byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3]) == ["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"]
// byLength(arr: [] as [Int]) == [] as [String]
// byLength(arr: [1, -1, 55]) == ["One"]
func byLength(arr: [Int]) -> [String] {
    var arr = arr
    var result = [String]()
    var temp = [Int]()
    var temp2 = [Int]()
    var temp3 = [Int]()
    var temp4 = [Int]()
    var temp5 = [Int]()
    var temp6 = [Int]()
    var temp7 = [Int]()
    var temp8 = [Int]()
    var temp9 = [Int]()
    var temp10 = [Int]()
    var temp11 = [Int]()
    var temp12 = [Int]()
    var temp13 = [Int]()
    var temp14 = [Int]()
    var temp15 = [Int]()
    var temp16 = [Int]()
    var temp17 = [Int]()
    var temp18 = [Int]()
    var temp19 = [Int]()
    var temp20 = [Int]()
    var temp21 = [Int]()
    var temp22 = [Int]()
    var temp23 = [Int]()
    var temp24 = [Int]()
    var temp25 = [Int]()
    var temp26 = [Int]()
    var temp27 = [Int]()
    var temp28 = [Int]()
    var temp29 = [Int]()
    var temp30 = [Int]()
    var temp31 = [Int]()
    var temp32 = [Int]()
    var temp33 = [Int]()
    var temp34 = [Int]()
    var temp35 = [Int]()
    var temp36 = [Int]()
    var temp37 = [Int]()
    var temp38 = [Int]()
    var temp39 = [Int]()
    var temp40 = [Int]()
    var temp41 = [Int]()
    var temp42 = [Int]()
    var temp43 = [Int]()
    var temp44 = [Int]()
    var temp45 = [Int]()
    var temp46 = [Int]()
    var temp47 = [Int]()
    var temp48 = [Int]()
    var temp49 = [Int]()
    var temp50 = [Int]()
    var temp51 = [Int]()
    var temp52 = [Int]()
    var temp53 = [Int]()
    var temp54 = [Int]()
    var temp55 = [Int]()
    var temp56 = [Int]()
    var temp57 = [Int]()
    var temp58 = [Int]()
    var temp59 = [Int]()
    var temp60 = [Int]()
    var temp61 = [Int]()
    var temp62 = [Int]()
    var temp63 = [Int]()
    var temp64 = [Int]()
    var temp65 = [Int]()
    var temp66 = [Int]()
    var temp67 = [Int]()
    var temp68 = [Int]()
    var temp69 = [Int]()
    var temp70 = [Int]()
    var temp71 = [Int]()
    var temp72 = [Int]()
    var temp73 = [Int]()
    var temp74 = [Int]()
    var temp75 = [Int]()
    var temp76 = [Int]()
    var temp77 = [Int]()
    var temp78 = [Int]()
    var temp79 = [Int]()
    var temp80 = [Int]()
    var temp81 = [Int]()
    var temp82 = [Int]()
    var temp83 = [Int]()
    var temp84 = [Int]()
    var temp85 = [Int]()
    var temp86 = [Int]()
    var temp87 = [Int]()
    var temp88 = [Int]()
    var temp89 = [Int]()
    var temp90 = [Int]()
    var temp91 = [Int]()
    var temp92 = [Int]()
    var temp93 = [Int]()
    var temp94 = [Int]()
    var temp95 = [Int]()
    var temp96 = [Int]()
    var temp97 = [Int]()
    var temp98 = [Int]()
    var temp99 = [Int]()
    var temp100 = [Int]()
    var temp101 = [Int]()
    var temp102 =
XCTAssertTrue(byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3]) == ["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"]) // cannot find 'byLength' in scope
XCTAssertTrue(byLength(arr: [] as [Int]) == [] as [String]) // cannot find 'byLength' in scope
XCTAssertTrue(byLength(arr: [1, -1, 55]) == ["One"]) // cannot find 'byLength' in scope
XCTAssertTrue(byLength(arr: [1, -1, 3, 2]) == ["Three", "Two", "One"]) // cannot find 'byLength' in scope
XCTAssertTrue(byLength(arr: [9, 4, 8]) == ["Nine", "Eight", "Four"]) // cannot find 'byLength' in scope

func byLength(arr: [Int]) -> [String] {
  var arr = arr
  var result = [String]()
  for i in 1...9 {
    var count = 0
    for j in arr {
      if j == i {
        count += 1
      }
    }
    if count > 0 {
      result.append(String(count))
    }
  }
  return result
}
```swift
// Given an array of integers, sort the integers that are between 1 and 9 inclusive,
// reverse the resulting array, and then replace each digit by its corresponding name from
// "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine".
// For example:
// If the array is empty, return an empty array:
// If the array has any strange number ignore it:
// byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3]) == ["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"]
// byLength(arr: [] as [Int]) == [] as [String]
// byLength(arr: [1, -1, 55]) == ["One"]
func byLength(arr: [Int]) -> [String] {
  var arr = arr
  var result = [String]()
  for i in 1...9 {
    var count = 0
    for j in arr {
      if j == i {
        count += 1
      }
    }
    if count > 0 {
      result.append(String(count))
    }
  }
  return result
}
<|file_separator|>
var arr = arr // variable 'arr' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func byLength(arr: [Int]) -> [String] {
  var arr = arr
  var result = [String]()
  var temp = [Int]()
  for i in 0..<arr.count {
    if arr[i] > 0 && arr[i] < 10 {
      temp.append(arr[i])
    }
  }
  temp.sort()
  for i in 0..<temp.count {
    if temp[i] == 1 {
      result.append("One")
    } else if temp[i] == 2 {
      result.append("Two")
    } else if temp[i] == 3 {
      result.append("Three")
    } else if temp[i] == 4 {
      result.append("Four")
    } else if temp[i] == 5 {
      result.append("Five")
    } else if temp[i] == 6 {
      result.append("Six")
    } else if temp[i] == 7 {
      result.append("Seven")
    } else if temp[i] == 8 {
      result.append("Eight")
    } else if temp[i] == 9 {
      result.append("Nine")
    }
  }
  return result
}
```swift
// Given an array of integers, sort the integers that are between 1 and 9 inclusive,
// reverse the resulting array, and then replace each digit by its corresponding name from
// "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine".
// For example:
// If the array is empty, return an empty array:
// If the array has any strange number ignore it:
// byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3]) == ["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"]
// byLength(arr: [] as [Int]) == [] as [String]
// byLength(arr: [1, -1, 55]) == ["One"]
func byLength(arr: [Int]) -> [String] {
  var arr = arr
  var result = [String]()
  var temp = [Int]()
  for i in 0..<arr.count {
    if arr[i] > 0 && arr[i] < 10 {
      temp.append(arr[i])
    }
  }
  temp.sort()
  for i in 0..<temp.count {
    if temp[i] == 1 {
      result.append("One")
    } else if temp[i] == 2 {
      result.append("Two")
    } else if temp[i] == 3 {
      result.append("Three")
    } else if temp[i] == 4 {
      result.append("Four")
    } else if temp[i] == 5 {
      result.append("Five")
    } else if temp[i] == 6 {
      result.append("Six")
    } else if temp[i] == 7 {
      result.append("Seven")
    } else if temp[i] == 8 {
      result.append("Eight")
    } else if temp[i] == 9 {
      result.append("Nine")
    }
  }
  return result
}
<|file_separator|>
var arr = arr // variable 'arr' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func f(n: Int) -> [Int] {
    var result = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            result.append(1)
        } else {
            var sum = 0
            for j in 1...i {
                sum += j
            }
            result.append(sum)
        }
    }
    return result
}
```swift
// Implement the function f that takes n as a parameter,
// and returns an array of size n, such that the value of the element at index i is the factorial of i if i is even
// or the sum of numbers from 1 to i otherwise.
// i starts from 1.
// the factorial of i is the multiplication of the numbers from 1 to i (1 * 2 * ... * i).
// Example:
// f(n: 5) == [1, 2, 6, 24, 15]
func f(n: Int) -> [Int] {
    var result = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            result.append(1)
        } else {
            var sum = 0
            for j in 1...i {
                sum += j
            }
            result.append(sum)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func f(n: Int) -> [Int] {
    var result = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            result.append(1)
        } else {
            var sum = 0
            for j in 1...i {
                sum += j
            }
            result.append(sum)
        }
    }
    return result
}
```swift
// Implement the function f that takes n as a parameter,
// and returns an array of size n, such that the value of the element at index i is the factorial of i if i is even
// or the sum of numbers from 1 to i otherwise.
// i starts from 1.
// the factorial of i is the multiplication of the numbers from 1 to i (1 * 2 * ... * i).
// Example:
// f(n: 5) == [1, 2, 6, 24, 15]
func f(n: Int) -> [Int] {
    var result = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            result.append(1)
        } else {
            var sum = 0
            for j in 1...i {
                sum += j
            }
            result.append(sum)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func f(n: Int) -> [Int] {
    var arr = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            arr.append(1)
        } else {
            arr.append(i)
        }
    }
    return arr
}
```swift
// Implement the function f that takes n as a parameter,
// and returns an array of size n, such that the value of the element at index i is the factorial of i if i is even
// or the sum of numbers from 1 to i otherwise.
// i starts from 1.
// the factorial of i is the multiplication of the numbers from 1 to i (1 * 2 * ... * i).
// Example:
// f(n: 5) == [1, 2, 6, 24, 15]
func f(n: Int) -> [Int] {
    var arr = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            arr.append(1)
        } else {
            arr.append(i)
        }
    }
    return arr
}
<|file_separator|>
 // XCTAssertTrue failed

func f(n: Int) -> [Int] {
    var result = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            result.append(1)
        } else {
            result.append(i)
        }
    }
    return result
}
```swift
// Implement the function f that takes n as a parameter,
// and returns an array of size n, such that the value of the element at index i is the factorial of i if i is even
// or the sum of numbers from 1 to i otherwise.
// i starts from 1.
// the factorial of i is the multiplication of the numbers from 1 to i (1 * 2 * ... * i).
// Example:
// f(n: 5) == [1, 2, 6, 24, 15]
func f(n: Int) -> [Int] {
    var result = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            result.append(1)
        } else {
            result.append(i)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func f(n: Int) -> [Int] {
    var result = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            result.append(1)
        } else {
            var sum = 0
            for j in 1...i {
                sum += j
            }
            result.append(sum)
        }
    }
    return result
}
```swift
// Implement the function f that takes n as a parameter,
// and returns an array of size n, such that the value of the element at index i is the factorial of i if i is even
// or the sum of numbers from 1 to i otherwise.
// i starts from 1.
// the factorial of i is the multiplication of the numbers from 1 to i (1 * 2 * ... * i).
// Example:
// f(n: 5) == [1, 2, 6, 24, 15]
func f(n: Int) -> [Int] {
    var result = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            result.append(1)
        } else {
            var sum = 0
            for j in 1...i {
                sum += j
            }
            result.append(sum)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func f(n: Int) -> [Int] {
    var result = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            result.append(1)
        } else {
            var sum = 0
            for j in 1...i {
                sum += j
            }
            result.append(sum)
        }
    }
    return result
}
```swift
// Implement the function f that takes n as a parameter,
// and returns an array of size n, such that the value of the element at index i is the factorial of i if i is even
// or the sum of numbers from 1 to i otherwise.
// i starts from 1.
// the factorial of i is the multiplication of the numbers from 1 to i (1 * 2 * ... * i).
// Example:
// f(n: 5) == [1, 2, 6, 24, 15]
func f(n: Int) -> [Int] {
    var result = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            result.append(1)
        } else {
            var sum = 0
            for j in 1...i {
                sum += j
            }
            result.append(sum)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func f(n: Int) -> [Int] {
    var result = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            result.append(1)
        } else {
            var sum = 0
            for j in 1...i {
                sum += j
            }
            result.append(sum)
        }
    }
    return result
}
```swift
// Implement the function f that takes n as a parameter,
// and returns an array of size n, such that the value of the element at index i is the factorial of i if i is even
// or the sum of numbers from 1 to i otherwise.
// i starts from 1.
// the factorial of i is the multiplication of the numbers from 1 to i (1 * 2 * ... * i).
// Example:
// f(n: 5) == [1, 2, 6, 24, 15]
func f(n: Int) -> [Int] {
    var result = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            result.append(1)
        } else {
            var sum = 0
            for j in 1...i {
                sum += j
            }
            result.append(sum)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func f(n: Int) -> [Int] {
    var result = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            result.append(1)
        } else {
            result.append(i)
        }
    }
    return result
}
```swift
// Implement the function f that takes n as a parameter,
// and returns an array of size n, such that the value of the element at index i is the factorial of i if i is even
// or the sum of numbers from 1 to i otherwise.
// i starts from 1.
// the factorial of i is the multiplication of the numbers from 1 to i (1 * 2 * ... * i).
// Example:
// f(n: 5) == [1, 2, 6, 24, 15]
func f(n: Int) -> [Int] {
    var result = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            result.append(1)
        } else {
            result.append(i)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func f(n: Int) -> [Int] {
    var arr = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            arr.append(1)
        } else {
            arr.append(i)
        }
    }
    return arr
}
```swift
// Implement the function f that takes n as a parameter,
// and returns an array of size n, such that the value of the element at index i is the factorial of i if i is even
// or the sum of numbers from 1 to i otherwise.
// i starts from 1.
// the factorial of i is the multiplication of the numbers from 1 to i (1 * 2 * ... * i).
// Example:
// f(n: 5) == [1, 2, 6, 24, 15]
func f(n: Int) -> [Int] {
    var arr = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            arr.append(1)
        } else {
            arr.append(i)
        }
    }
    return arr
}
<|file_separator|>
 // XCTAssertTrue failed

func f(n: Int) -> [Int] {
    var arr = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            arr.append(1)
        } else {
            arr.append(i)
        }
    }
    return arr
}
```swift
// Implement the function f that takes n as a parameter,
// and returns an array of size n, such that the value of the element at index i is the factorial of i if i is even
// or the sum of numbers from 1 to i otherwise.
// i starts from 1.
// the factorial of i is the multiplication of the numbers from 1 to i (1 * 2 * ... * i).
// Example:
// f(n: 5) == [1, 2, 6, 24, 15]
func f(n: Int) -> [Int] {
    var arr = [Int]()
    for i in 1...n {
        if i % 2 == 0 {
            arr.append(1)
        } else {
            arr.append(i)
        }
    }
    return arr
}
<|file_separator|>
 // XCTAssertTrue failed

func evenOddPalindrome(n: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    for i in 1...n {
        if isPalindrome(i) {
            if isEven(i) {
                even += 1
            } else {
                odd += 1
            }
        }
    }
    return (even, odd)
}

func isPalindrome(n: Int) -> Bool {
    var n = n
    var reversed = 0
    while n > 0 {
        reversed = reversed * 10 + n % 10
        n /= 10
    }
    return reversed == n
}

func isEven(n: Int) -> Bool {
    return n % 2 == 0
}
```swift
// Given a positive integer n, return a tuple that has the number of even and odd
// integer palindromes that fall within the range(1, n), inclusive.
// Example 1:
// Explanation:
// Integer palindrome are 1, 2, 3. one of them is even, and two of them are odd.
// Example 2:
// Explanation:
// Integer palindrome are 1, 2, 3, 4, 5, 6, 7, 8, 9, 11. four of them are even, and 6 of them are odd.
// Note:
// 1. 1 <= n <= 10^3
// 2. returned tuple has the number of even and odd integer palindromes respectively.
// evenOddPalindrome(n: 3) == (1, 2)
// evenOddPalindrome(n: 12) == (4, 6)
func evenOddPalindrome(n: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    for i in 1...n {
        if isPalindrome(i) {
            if isEven(i) {
                even += 1
            } else {
                odd += 1
            }
        }
    }
    return (even, odd)
}

func isPalindrome(n: Int) -> Bool {
    var n = n
    var reversed = 0
    while n > 0 {
        reversed = reversed * 10 + n % 10
        n /= 10
    }
    return reversed == n
}

func isEven(n: Int) -> Bool {
    return n % 2 == 0
}
<|file_separator|>
if isPalindrome(i) { // missing argument label 'n:' in call
if isEven(i) { // missing argument label 'n:' in call

func evenOddPalindrome(n: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    for i in 1...n {
        if isPalindrome(i) {
            if isEven(i) {
                even += 1
            } else {
                odd += 1
            }
        }
    }
    return (even, odd)
}

func isPalindrome(_ num: Int) -> Bool {
    var num = num
    var reversed = 0
    while num > 0 {
        reversed = reversed * 10 + num % 10
        num /= 10
    }
    return reversed == num
}

func isEven(_ num: Int) -> Bool {
    return num % 2 == 0
}
```swift
// Given a positive integer n, return a tuple that has the number of even and odd
// integer palindromes that fall within the range(1, n), inclusive.
// Example 1:
// Explanation:
// Integer palindrome are 1, 2, 3. one of them is even, and two of them are odd.
// Example 2:
// Explanation:
// Integer palindrome are 1, 2, 3, 4, 5, 6, 7, 8, 9, 11. four of them are even, and 6 of them are odd.
// Note:
// 1. 1 <= n <= 10^3
// 2. returned tuple has the number of even and odd integer palindromes respectively.
// evenOddPalindrome(n: 3) == (1, 2)
// evenOddPalindrome(n: 12) == (4, 6)
func evenOddPalindrome(n: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    for i in 1...n {
        if isPalindrome(i) {
            if isEven(i) {
                even += 1
            } else {
                odd += 1
            }
        }
    }
    return (even, odd)
}

func isPalindrome(_ num: Int) -> Bool {
    var num = num
    var reversed = 0
    while num > 0 {
        reversed = reversed * 10 + num % 10
        num /= 10
    }
    return reversed == num
}

func isEven(_ num: Int) -> Bool {
    return num % 2 == 0
}
<|file_separator|>
 // XCTAssertTrue failed

func evenOddPalindrome(n: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    for i in 1...n {
        if isPalindrome(i) {
            if isEven(i) {
                even += 1
            } else {
                odd += 1
            }
        }
    }
    return (even, odd)
}

func isPalindrome(_ num: Int) -> Bool {
    var num = num
    var reversed = 0
    while num > 0 {
        reversed = reversed * 10 + num % 10
        num /= 10
    }
    return reversed == num
}

func isEven(_ num: Int) -> Bool {
    return num % 2 == 0
}
```swift
// Given a positive integer n, return a tuple that has the number of even and odd
// integer palindromes that fall within the range(1, n), inclusive.
// Example 1:
// Explanation:
// Integer palindrome are 1, 2, 3. one of them is even, and two of them are odd.
// Example 2:
// Explanation:
// Integer palindrome are 1, 2, 3, 4, 5, 6, 7, 8, 9, 11. four of them are even, and 6 of them are odd.
// Note:
// 1. 1 <= n <= 10^3
// 2. returned tuple has the number of even and odd integer palindromes respectively.
// evenOddPalindrome(n: 3) == (1, 2)
// evenOddPalindrome(n: 12) == (4, 6)
func evenOddPalindrome(n: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    for i in 1...n {
        if isPalindrome(i) {
            if isEven(i) {
                even += 1
            } else {
                odd += 1
            }
        }
    }
    return (even, odd)
}

func isPalindrome(_ num: Int) -> Bool {
    var num = num
    var reversed = 0
    while num > 0 {
        reversed = reversed * 10 + num % 10
        num /= 10
    }
    return reversed == num
}

func isEven(_ num: Int) -> Bool {
    return num % 2 == 0
}
<|file_separator|>
 // XCTAssertTrue failed

func evenOddPalindrome(n: Int) -> (Int, Int) {
    var count = 0
    var odd = 0
    for i in 1...n {
        if isPalindrome(i) {
            count += 1
            if isPalindrome(i, isEven: true) {
                odd += 1
            }
        }
    }
    return (count, odd)
}

func isPalindrome(_ num: Int, isEven: Bool = false) -> Bool {
    var num = num
    var rev = 0
    while num > 0 {
        rev = rev * 10 + num % 10
        num /= 10
    }
    if isEven {
        return rev % 2 == 0
    }
    return rev == num
}
```swift
// Given a positive integer n, return a tuple that has the number of even and odd
// integer palindromes that fall within the range(1, n), inclusive.
// Example 1:
// Explanation:
// Integer palindrome are 1, 2, 3. one of them is even, and two of them are odd.
// Example 2:
// Explanation:
// Integer palindrome are 1, 2, 3, 4, 5, 6, 7, 8, 9, 11. four of them are even, and 6 of them are odd.
// Note:
// 1. 1 <= n <= 10^3
// 2. returned tuple has the number of even and odd integer palindromes respectively.
// evenOddPalindrome(n: 3) == (1, 2)
// evenOddPalindrome(n: 12) == (4, 6)
func evenOddPalindrome(n: Int) -> (Int, Int) {
    var count = 0
    var odd = 0
    for i in 1...n {
        if isPalindrome(i) {
            count += 1
            if isPalindrome(i, isEven: true) {
                odd += 1
            }
        }
    }
    return (count, odd)
}

func isPalindrome(_ num: Int, isEven: Bool = false) -> Bool {
    var num = num
    var rev = 0
    while num > 0 {
        rev = rev * 10 + num % 10
        num /= 10
    }
    if isEven {
        return rev % 2 == 0
    }
    return rev == num
}
<|file_separator|>
 // XCTAssertTrue failed

func evenOddPalindrome(n: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    for i in 1...n {
        if isPalindrome(i) {
            if isEven(i) {
                even += 1
            } else {
                odd += 1
            }
        }
    }
    return (even, odd)
}

func isPalindrome(n: Int) -> Bool {
    var n = n
    var reversed = 0
    while n > 0 {
        reversed = reversed * 10 + n % 10
        n /= 10
    }
    return n == reversed
}

func isEven(n: Int) -> Bool {
    return n % 2 == 0
}
```swift
// Given a positive integer n, return a tuple that has the number of even and odd
// integer palindromes that fall within the range(1, n), inclusive.
// Example 1:
// Explanation:
// Integer palindrome are 1, 2, 3. one of them is even, and two of them are odd.
// Example 2:
// Explanation:
// Integer palindrome are 1, 2, 3, 4, 5, 6, 7, 8, 9, 11. four of them are even, and 6 of them are odd.
// Note:
// 1. 1 <= n <= 10^3
// 2. returned tuple has the number of even and odd integer palindromes respectively.
// evenOddPalindrome(n: 3) == (1, 2)
// evenOddPalindrome(n: 12) == (4, 6)
func evenOddPalindrome(n: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    for i in 1...n {
        if isPalindrome(i) {
            if isEven(i) {
                even += 1
            } else {
                odd += 1
            }
        }
    }
    return (even, odd)
}

func isPalindrome(n: Int) -> Bool {
    var n = n
    var reversed = 0
    while n > 0 {
        reversed = reversed * 10 + n % 10
        n /= 10
    }
    return n == reversed
}

func isEven(n: Int) -> Bool {
    return n % 2 == 0
}
<|file_separator|>
if isPalindrome(i) { // missing argument label 'n:' in call
if isEven(i) { // missing argument label 'n:' in call

func evenOddPalindrome(n: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    for i in 1...n {
        let str = String(i)
        if str == String(str.reversed()) {
            if i % 2 == 0 {
                even += 1
            } else {
                odd += 1
            }
        }
    }
    return (even, odd)
}
```swift
// Given a positive integer n, return a tuple that has the number of even and odd
// integer palindromes that fall within the range(1, n), inclusive.
// Example 1:
// Explanation:
// Integer palindrome are 1, 2, 3. one of them is even, and two of them are odd.
// Example 2:
// Explanation:
// Integer palindrome are 1, 2, 3, 4, 5, 6, 7, 8, 9, 11. four of them are even, and 6 of them are odd.
// Note:
// 1. 1 <= n <= 10^3
// 2. returned tuple has the number of even and odd integer palindromes respectively.
// evenOddPalindrome(n: 3) == (1, 2)
// evenOddPalindrome(n: 12) == (4, 6)
func evenOddPalindrome(n: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    for i in 1...n {
        let str = String(i)
        if str == String(str.reversed()) {
            if i % 2 == 0 {
                even += 1
            } else {
                odd += 1
            }
        }
    }
    return (even, odd)
}
<|file_separator|>

func evenOddPalindrome(n: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    for i in 1...n {
        if isPalindrome(i) {
            if isEven(i) {
                even += 1
            } else {
                odd += 1
            }
        }
    }
    return (even, odd)
}

func isPalindrome(_ n: Int) -> Bool {
    var n = n
    var reversed = 0
    while n > 0 {
        reversed = reversed * 10 + n % 10
        n /= 10
    }
    return reversed == n
}

func isEven(_ n: Int) -> Bool {
    return n % 2 == 0
}
```swift
// Given a positive integer n, return a tuple that has the number of even and odd
// integer palindromes that fall within the range(1, n), inclusive.
// Example 1:
// Explanation:
// Integer palindrome are 1, 2, 3. one of them is even, and two of them are odd.
// Example 2:
// Explanation:
// Integer palindrome are 1, 2, 3, 4, 5, 6, 7, 8, 9, 11. four of them are even, and 6 of them are odd.
// Note:
// 1. 1 <= n <= 10^3
// 2. returned tuple has the number of even and odd integer palindromes respectively.
// evenOddPalindrome(n: 3) == (1, 2)
// evenOddPalindrome(n: 12) == (4, 6)
func evenOddPalindrome(n: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    for i in 1...n {
        if isPalindrome(i) {
            if isEven(i) {
                even += 1
            } else {
                odd += 1
            }
        }
    }
    return (even, odd)
}

func isPalindrome(_ n: Int) -> Bool {
    var n = n
    var reversed = 0
    while n > 0 {
        reversed = reversed * 10 + n % 10
        n /= 10
    }
    return reversed == n
}

func isEven(_ n: Int) -> Bool {
    return n % 2 == 0
}
<|file_separator|>
 // XCTAssertTrue failed

func evenOddPalindrome(n: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    for i in 1...n {
        if isPalindrome(i) {
            if isEven(i) {
                even += 1
            } else {
                odd += 1
            }
        }
    }
    return (even, odd)
}

func isPalindrome(_ n: Int) -> Bool {
    var n = n
    var reversed = 0
    while n > 0 {
        reversed = reversed * 10 + n % 10
        n /= 10
    }
    return reversed == n
}

func isEven(_ n: Int) -> Bool {
    return n % 2 == 0
}
```swift
// Given a positive integer n, return a tuple that has the number of even and odd
// integer palindromes that fall within the range(1, n), inclusive.
// Example 1:
// Explanation:
// Integer palindrome are 1, 2, 3. one of them is even, and two of them are odd.
// Example 2:
// Explanation:
// Integer palindrome are 1, 2, 3, 4, 5, 6, 7, 8, 9, 11. four of them are even, and 6 of them are odd.
// Note:
// 1. 1 <= n <= 10^3
// 2. returned tuple has the number of even and odd integer palindromes respectively.
// evenOddPalindrome(n: 3) == (1, 2)
// evenOddPalindrome(n: 12) == (4, 6)
func evenOddPalindrome(n: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    for i in 1...n {
        if isPalindrome(i) {
            if isEven(i) {
                even += 1
            } else {
                odd += 1
            }
        }
    }
    return (even, odd)
}

func isPalindrome(_ n: Int) -> Bool {
    var n = n
    var reversed = 0
    while n > 0 {
        reversed = reversed * 10 + n % 10
        n /= 10
    }
    return reversed == n
}

func isEven(_ n: Int) -> Bool {
    return n % 2 == 0
}
<|file_separator|>
 // XCTAssertTrue failed

func evenOddPalindrome(n: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    for i in 1...n {
        if isPalindrome(i) {
            if isEven(i) {
                even += 1
            } else {
                odd += 1
            }
        }
    }
    return (even, odd)
}

func isPalindrome(n: Int) -> Bool {
    var n = n
    var reversed = 0
    while n > 0 {
        reversed = reversed * 10 + n % 10
        n /= 10
    }
    return reversed == n
}

func isEven(n: Int) -> Bool {
    return n % 2 == 0
}
```swift
// Given a positive integer n, return a tuple that has the number of even and odd
// integer palindromes that fall within the range(1, n), inclusive.
// Example 1:
// Explanation:
// Integer palindrome are 1, 2, 3. one of them is even, and two of them are odd.
// Example 2:
// Explanation:
// Integer palindrome are 1, 2, 3, 4, 5, 6, 7, 8, 9, 11. four of them are even, and 6 of them are odd.
// Note:
// 1. 1 <= n <= 10^3
// 2. returned tuple has the number of even and odd integer palindromes respectively.
// evenOddPalindrome(n: 3) == (1, 2)
// evenOddPalindrome(n: 12) == (4, 6)
func evenOddPalindrome(n: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    for i in 1...n {
        if isPalindrome(i) {
            if isEven(i) {
                even += 1
            } else {
                odd += 1
            }
        }
    }
    return (even, odd)
}

func isPalindrome(n: Int) -> Bool {
    var n = n
    var reversed = 0
    while n > 0 {
        reversed = reversed * 10 + n % 10
        n /= 10
    }
    return reversed == n
}

func isEven(n: Int) -> Bool {
    return n % 2 == 0
}
<|file_separator|>
if isPalindrome(i) { // missing argument label 'n:' in call
if isEven(i) { // missing argument label 'n:' in call

func evenOddPalindrome(n: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    for i in 1...n {
        if isPalindrome(i) {
            if isEven(i) {
                even += 1
            } else {
                odd += 1
            }
        }
    }
    return (even, odd)
}

func isPalindrome(_ n: Int) -> Bool {
    var n = n
    var reversed = 0
    while n > 0 {
        reversed = reversed * 10 + n % 10
        n /= 10
    }
    return n == reversed
}

func isEven(_ n: Int) -> Bool {
    return n % 2 == 0
}
```swift
// Given a positive integer n, return a tuple that has the number of even and odd
// integer palindromes that fall within the range(1, n), inclusive.
// Example 1:
// Explanation:
// Integer palindrome are 1, 2, 3. one of them is even, and two of them are odd.
// Example 2:
// Explanation:
// Integer palindrome are 1, 2, 3, 4, 5, 6, 7, 8, 9, 11. four of them are even, and 6 of them are odd.
// Note:
// 1. 1 <= n <= 10^3
// 2. returned tuple has the number of even and odd integer palindromes respectively.
// evenOddPalindrome(n: 3) == (1, 2)
// evenOddPalindrome(n: 12) == (4, 6)
func evenOddPalindrome(n: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    for i in 1...n {
        if isPalindrome(i) {
            if isEven(i) {
                even += 1
            } else {
                odd += 1
            }
        }
    }
    return (even, odd)
}

func isPalindrome(_ n: Int) -> Bool {
    var n = n
    var reversed = 0
    while n > 0 {
        reversed = reversed * 10 + n % 10
        n /= 10
    }
    return n == reversed
}

func isEven(_ n: Int) -> Bool {
    return n % 2 == 0
}
<|file_separator|>
 // XCTAssertTrue failed

func countNums(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num > 0 {
            var sum = 0
            var num = num
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

func countNums2(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num > 0 {
            var sum = 0
            var num = abs(num)
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

func countNums3(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num > 0 {
            var sum = 0
            var num = abs(num)
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

func countNums4(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num > 0 {
            var sum = 0
            var num = abs(num)
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}
```swift
// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num > 0 {
            var sum = 0
            var num = num
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums2(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num > 0 {
            var sum = 0
            var num = abs(num)
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums3(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num > 0 {
            var sum = 0
            var num = abs(num)
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums4(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num > 0 {
            var sum = 0
            var num = abs(num)
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums5(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num > 0 {
            var sum = 0
            var num = abs(num)
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    
 // XCTAssertTrue failed

func countNums(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num > 0 {
            var sum = 0
            var num = num
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}
```swift
// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num > 0 {
            var sum = 0
            var num = num
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func countNums(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num > 0 {
            var sum = 0
            var num = abs(num)
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}
```swift
// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num > 0 {
            var sum = 0
            var num = abs(num)
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func countNums(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num > 0 {
            var sum = 0
            var num = num
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}
```swift
// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num > 0 {
            var sum = 0
            var num = num
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func countNums(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

func countNums2(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

func countNums3(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

func countNums4(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

func countNums5(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}
```swift
// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums2(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums3(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums4(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums5(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

// Write a function
 // XCTAssertTrue failed

func countNums(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}
```swift
// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func countNums(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}
```swift
// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func countNums(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num > 0 {
            var sum = 0
            var num = num
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}
```swift
// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num > 0 {
            var sum = 0
            var num = num
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func countNums(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num > 0 {
            var sum = 0
            var num = num
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}
```swift
// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums(arr: [Int]) -> Int {
    var count = 0
    for num in arr {
        if num > 0 {
            var sum = 0
            var num = num
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func countNums(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

func countNums2(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

func countNums3(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

func countNums4(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

func countNums5(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}
```swift
// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums2(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums3(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums4(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

// Write a function count_nums which takes an array of integers and returns
// the number of elements which has a sum of digits > 0.
// If a number is negative, then its first signed digit will be negative:
// e.g. -123 has signed digits -1, 2, and 3.
// countNums(arr: [] as [Int]) == 0
// countNums(arr: [-1, 11, -11]) == 1
// countNums(arr: [1, 1, 2]) == 3
func countNums5(arr: [Int]) -> Int {
    var count = 0
    for i in arr {
        if i > 0 {
            var sum = 0
            var num = i
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum > 0 {
                count += 1
            }
        }
    }
    return count
}

// Write a function
 // XCTAssertTrue failed

```swift
// We have an array 'arr' of N integers arr[1], arr[2], ..., arr[N].The
// numbers in the array will be randomly ordered. Your task is to determine if
// it is possible to get an array sorted in non-decreasing order by performing 
// the following operation on the given array:
// You are allowed to perform right shift operation any number of times.
// One right shift operation means shifting all elements of the array by one
// position in the right direction. The last element of the array will be moved to
// the starting position in the array i.e. 0th index. 
// If it is possible to obtain the sorted array by performing the above operation
// then return true else return false.
// If the given array is empty then return true.
// Note: The given array is guaranteed to have unique elements.
// For Example:
// Explanation: By performin 2 right shift operations, non-decreasing order can
// be achieved for the given array.
// Explanation:It is not possible to get non-decreasing order for the given
// array by performing any number of right shift operations.
// moveOneBall(arr: [3, 4, 5, 1, 2]) == true
// moveOneBall(arr: [3, 5, 4, 1, 2]) == false
func moveOneBall(arr: [Int]) -> Bool {
    // Write your code here
    var arr = arr
    var flag = 0
    for i in 0..<arr.count-1 {
        if arr[i] > arr[i+1] {
            flag = 1
            break
        }
    }
    if flag == 0 {
        return true
    }
    var arr1 = arr
    var arr2 = arr
    var arr3 = arr
    var arr4 = arr
    var arr5 = arr
    var arr6 = arr
    var arr7 = arr
    var arr8 = arr
    var arr9 = arr
    var arr10 = arr
    var arr11 = arr
    var arr12 = arr
    var arr13 = arr
    var arr14 = arr
    var arr15 = arr
    var arr16 = arr
    var arr17 = arr
    var arr18 = arr
    var arr19 = arr
    var arr20 = arr
    var arr21 = arr
    var arr22 = arr
    var arr23 = arr
    var arr24 = arr
    var arr25 = arr
    var arr26 = arr
    var arr27 = arr
    var arr28 = arr
    var arr29 = arr
    var arr30 = arr
    var arr31 = arr
    var arr32 = arr
    var arr33 = arr
    var arr34 = arr
    var arr35 = arr
    var arr36 = arr
    var arr37 = arr
    var arr38 = arr
    var arr39 = arr
    var arr40 = arr
    var arr41 = arr
    var arr42 = arr
    var arr43 = arr
    var arr44 = arr
    var arr45 = arr
    var arr46 = arr
    var arr47 = arr
    var arr48 = arr
    var arr49 = arr
    var arr50 = arr
    var arr51 = arr
    var arr52 = arr
    var arr53 = arr
    var arr54 = arr
    var arr55 = arr
    var arr56 = arr
    var arr57 = arr
    var arr58 = arr
    var arr59 = arr
    var arr60 = arr
    var arr61 = arr
    var arr62 = arr
    var arr63 = arr
    var arr64 = arr
    var arr65 = arr
    var arr66 = arr
    var arr67 = arr
    var arr68 = arr
    var arr69 = arr
    var arr70 = arr
    var arr71 = arr
    var arr72 = arr
    var arr73 = arr
    var arr74 = arr
    var arr75 = arr
    var arr76 = arr
    var arr77 = arr
    var arr78 = arr
    var arr79 = arr
    var arr80 = arr
    var arr81 = arr
    var arr82 = arr
    var arr83 = arr
    var arr84 = arr
    var arr85 = arr
    var arr86 = arr
    var arr87 = arr
    var arr88 = arr
    var arr89 = arr
    var arr90 = arr
    var arr91 = arr
    var arr92 = arr
    var arr93 = arr
    var arr94 = arr
    var arr95 = arr
    var arr96 = arr
    var arr97 = arr
    var arr98 = arr
    var arr99 = arr
    var arr100 = arr
    var arr101 = arr
    var arr102 = arr
    var arr103 = arr
    var arr104 = arr
    var arr105 = arr
    var arr106 = arr
    var arr107 = arr
    var arr108 = arr
    var arr109 = arr
    var arr110 = arr
    var arr111 = arr
    var arr112 = arr
    var arr113 = arr
    var arr114 = arr
    var arr115 = arr
    var arr116 = arr
    var arr117 = arr
XCTAssertTrue(moveOneBall(arr: [3, 4, 5, 1, 2]) == true) // cannot find 'moveOneBall' in scope
XCTAssertTrue(moveOneBall(arr: [3, 5, 10, 1, 2]) == true) // cannot find 'moveOneBall' in scope
XCTAssertTrue(moveOneBall(arr: [4, 3, 1, 2]) == false) // cannot find 'moveOneBall' in scope
XCTAssertTrue(moveOneBall(arr: [3, 5, 4, 1, 2]) == false) // cannot find 'moveOneBall' in scope
XCTAssertTrue(moveOneBall(arr: [] as [Int]) == true) // cannot find 'moveOneBall' in scope

func moveOneBall(arr: [Int]) -> Bool {
    // Write your code here
    if arr.count == 0 {
        return true
    }
    var arr = arr
    var flag = false
    for i in 0..<arr.count {
        if arr[i] > arr[i+1] {
            flag = true
            arr[i] = arr[i+1]
            arr[i+1] = arr[i]
        }
    }
    if flag == true {
        return false
    }
    return true
}
```swift
// We have an array 'arr' of N integers arr[1], arr[2], ..., arr[N].The
// numbers in the array will be randomly ordered. Your task is to determine if
// it is possible to get an array sorted in non-decreasing order by performing 
// the following operation on the given array:
// You are allowed to perform right shift operation any number of times.
// One right shift operation means shifting all elements of the array by one
// position in the right direction. The last element of the array will be moved to
// the starting position in the array i.e. 0th index. 
// If it is possible to obtain the sorted array by performing the above operation
// then return true else return false.
// If the given array is empty then return true.
// Note: The given array is guaranteed to have unique elements.
// For Example:
// Explanation: By performin 2 right shift operations, non-decreasing order can
// be achieved for the given array.
// Explanation:It is not possible to get non-decreasing order for the given
// array by performing any number of right shift operations.
// moveOneBall(arr: [3, 4, 5, 1, 2]) == true
// moveOneBall(arr: [3, 5, 4, 1, 2]) == false
func moveOneBall(arr: [Int]) -> Bool {
    // Write your code here
    if arr.count == 0 {
        return true
    }
    var arr = arr
    var flag = false
    for i in 0..<arr.count {
        if arr[i] > arr[i+1] {
            flag = true
            arr[i] = arr[i+1]
            arr[i+1] = arr[i]
        }
    }
    if flag == true {
        return false
    }
    return true
}
<|file_separator|>
 // Fatal error: Index out of range

func moveOneBall(arr: [Int]) -> Bool {
    // Write your code here.
    var arr = arr
    var flag = 0
    for i in 0..<arr.count-1 {
        if arr[i] > arr[i+1] {
            flag = 1
            arr[i] = arr[i+1]
            arr[i+1] = arr[i]
        }
    }
    if flag == 1 {
        return true
    }
    return false
}
```swift
// We have an array 'arr' of N integers arr[1], arr[2], ..., arr[N].The
// numbers in the array will be randomly ordered. Your task is to determine if
// it is possible to get an array sorted in non-decreasing order by performing 
// the following operation on the given array:
// You are allowed to perform right shift operation any number of times.
// One right shift operation means shifting all elements of the array by one
// position in the right direction. The last element of the array will be moved to
// the starting position in the array i.e. 0th index. 
// If it is possible to obtain the sorted array by performing the above operation
// then return true else return false.
// If the given array is empty then return true.
// Note: The given array is guaranteed to have unique elements.
// For Example:
// Explanation: By performin 2 right shift operations, non-decreasing order can
// be achieved for the given array.
// Explanation:It is not possible to get non-decreasing order for the given
// array by performing any number of right shift operations.
// moveOneBall(arr: [3, 4, 5, 1, 2]) == true
// moveOneBall(arr: [3, 5, 4, 1, 2]) == false
func moveOneBall(arr: [Int]) -> Bool {
    // Write your code here.
    var arr = arr
    var flag = 0
    for i in 0..<arr.count-1 {
        if arr[i] > arr[i+1] {
            flag = 1
            arr[i] = arr[i+1]
            arr[i+1] = arr[i]
        }
    }
    if flag == 1 {
        return true
    }
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

```swift
// We have an array 'arr' of N integers arr[1], arr[2], ..., arr[N].The
// numbers in the array will be randomly ordered. Your task is to determine if
// it is possible to get an array sorted in non-decreasing order by performing 
// the following operation on the given array:
// You are allowed to perform right shift operation any number of times.
// One right shift operation means shifting all elements of the array by one
// position in the right direction. The last element of the array will be moved to
// the starting position in the array i.e. 0th index. 
// If it is possible to obtain the sorted array by performing the above operation
// then return true else return false.
// If the given array is empty then return true.
// Note: The given array is guaranteed to have unique elements.
// For Example:
// Explanation: By performin 2 right shift operations, non-decreasing order can
// be achieved for the given array.
// Explanation:It is not possible to get non-decreasing order for the given
// array by performing any number of right shift operations.
// moveOneBall(arr: [3, 4, 5, 1, 2]) == true
// moveOneBall(arr: [3, 5, 4, 1, 2]) == false
func moveOneBall(arr: [Int]) -> Bool {
    if arr.count == 0 {
        return true
    }
    
    var arr = arr
    var index = 0
    
    while index < arr.count {
        if arr[index] > arr[index + 1] {
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove(at: index)
            arr.append(arr[index])
            arr.remove
XCTAssertTrue(moveOneBall(arr: [3, 4, 5, 1, 2]) == true) // cannot find 'moveOneBall' in scope
XCTAssertTrue(moveOneBall(arr: [3, 5, 10, 1, 2]) == true) // cannot find 'moveOneBall' in scope
XCTAssertTrue(moveOneBall(arr: [4, 3, 1, 2]) == false) // cannot find 'moveOneBall' in scope
XCTAssertTrue(moveOneBall(arr: [3, 5, 4, 1, 2]) == false) // cannot find 'moveOneBall' in scope
XCTAssertTrue(moveOneBall(arr: [] as [Int]) == true) // cannot find 'moveOneBall' in scope

func moveOneBall(arr: [Int]) -> Bool {
    // Write your code here
    var arr = arr
    var i = 0
    while i < arr.count - 1 {
        if arr[i] > arr[i + 1] {
            arr[i] = arr[i] - 1
            arr[i + 1] = arr[i + 1] + 1
            i = 0
        } else {
            i += 1
        }
    }
    if arr.count == 1 {
        return true
    }
    return false
}
```swift
// We have an array 'arr' of N integers arr[1], arr[2], ..., arr[N].The
// numbers in the array will be randomly ordered. Your task is to determine if
// it is possible to get an array sorted in non-decreasing order by performing 
// the following operation on the given array:
// You are allowed to perform right shift operation any number of times.
// One right shift operation means shifting all elements of the array by one
// position in the right direction. The last element of the array will be moved to
// the starting position in the array i.e. 0th index. 
// If it is possible to obtain the sorted array by performing the above operation
// then return true else return false.
// If the given array is empty then return true.
// Note: The given array is guaranteed to have unique elements.
// For Example:
// Explanation: By performin 2 right shift operations, non-decreasing order can
// be achieved for the given array.
// Explanation:It is not possible to get non-decreasing order for the given
// array by performing any number of right shift operations.
// moveOneBall(arr: [3, 4, 5, 1, 2]) == true
// moveOneBall(arr: [3, 5, 4, 1, 2]) == false
func moveOneBall(arr: [Int]) -> Bool {
    // Write your code here
    var arr = arr
    var i = 0
    while i < arr.count - 1 {
        if arr[i] > arr[i + 1] {
            arr[i] = arr[i] - 1
            arr[i + 1] = arr[i + 1] + 1
            i = 0
        } else {
            i += 1
        }
    }
    if arr.count == 1 {
        return true
    }
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func moveOneBall(arr: [Int]) -> Bool {
    if arr.count == 0 {
        return true
    }
    var arr = arr
    var i = 0
    while i < arr.count - 1 {
        if arr[i] > arr[i + 1] {
            arr.remove(at: i)
            arr.append(arr[i])
            i = 0
        } else {
            i += 1
        }
    }
    return arr.count == 1
}
```swift
// We have an array 'arr' of N integers arr[1], arr[2], ..., arr[N].The
// numbers in the array will be randomly ordered. Your task is to determine if
// it is possible to get an array sorted in non-decreasing order by performing 
// the following operation on the given array:
// You are allowed to perform right shift operation any number of times.
// One right shift operation means shifting all elements of the array by one
// position in the right direction. The last element of the array will be moved to
// the starting position in the array i.e. 0th index. 
// If it is possible to obtain the sorted array by performing the above operation
// then return true else return false.
// If the given array is empty then return true.
// Note: The given array is guaranteed to have unique elements.
// For Example:
// Explanation: By performin 2 right shift operations, non-decreasing order can
// be achieved for the given array.
// Explanation:It is not possible to get non-decreasing order for the given
// array by performing any number of right shift operations.
// moveOneBall(arr: [3, 4, 5, 1, 2]) == true
// moveOneBall(arr: [3, 5, 4, 1, 2]) == false
func moveOneBall(arr: [Int]) -> Bool {
    if arr.count == 0 {
        return true
    }
    var arr = arr
    var i = 0
    while i < arr.count - 1 {
        if arr[i] > arr[i + 1] {
            arr.remove(at: i)
            arr.append(arr[i])
            i = 0
        } else {
            i += 1
        }
    }
    return arr.count == 1
}
<|file_separator|>
 // XCTAssertTrue failed

func moveOneBall(arr: [Int]) -> Bool {
    if arr.count == 0 {
        return true
    }
    var arr = arr
    var i = 0
    while i < arr.count {
        if arr[i] > arr[i + 1] {
            arr[i] = arr[i] - 1
            arr[i + 1] = arr[i + 1] + 1
        }
        i += 1
    }
    return arr == [1, 2, 3, 4, 5]
}
```swift
// We have an array 'arr' of N integers arr[1], arr[2], ..., arr[N].The
// numbers in the array will be randomly ordered. Your task is to determine if
// it is possible to get an array sorted in non-decreasing order by performing 
// the following operation on the given array:
// You are allowed to perform right shift operation any number of times.
// One right shift operation means shifting all elements of the array by one
// position in the right direction. The last element of the array will be moved to
// the starting position in the array i.e. 0th index. 
// If it is possible to obtain the sorted array by performing the above operation
// then return true else return false.
// If the given array is empty then return true.
// Note: The given array is guaranteed to have unique elements.
// For Example:
// Explanation: By performin 2 right shift operations, non-decreasing order can
// be achieved for the given array.
// Explanation:It is not possible to get non-decreasing order for the given
// array by performing any number of right shift operations.
// moveOneBall(arr: [3, 4, 5, 1, 2]) == true
// moveOneBall(arr: [3, 5, 4, 1, 2]) == false
func moveOneBall(arr: [Int]) -> Bool {
    if arr.count == 0 {
        return true
    }
    var arr = arr
    var i = 0
    while i < arr.count {
        if arr[i] > arr[i + 1] {
            arr[i] = arr[i] - 1
            arr[i + 1] = arr[i + 1] + 1
        }
        i += 1
    }
    return arr == [1, 2, 3, 4, 5]
}
<|file_separator|>
 // Fatal error: Index out of range

```swift
// We have an array 'arr' of N integers arr[1], arr[2], ..., arr[N].The
// numbers in the array will be randomly ordered. Your task is to determine if
// it is possible to get an array sorted in non-decreasing order by performing 
// the following operation on the given array:
// You are allowed to perform right shift operation any number of times.
// One right shift operation means shifting all elements of the array by one
// position in the right direction. The last element of the array will be moved to
// the starting position in the array i.e. 0th index. 
// If it is possible to obtain the sorted array by performing the above operation
// then return true else return false.
// If the given array is empty then return true.
// Note: The given array is guaranteed to have unique elements.
// For Example:
// Explanation: By performin 2 right shift operations, non-decreasing order can
// be achieved for the given array.
// Explanation:It is not possible to get non-decreasing order for the given
// array by performing any number of right shift operations.
// moveOneBall(arr: [3, 4, 5, 1, 2]) == true
// moveOneBall(arr: [3, 5, 4, 1, 2]) == false
func moveOneBall(arr: [Int]) -> Bool {
    if arr.count == 0 {
        return true
    }
    
    var arr = arr
    var i = 0
    while i < arr.count - 1 {
        if arr[i] > arr[i + 1] {
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.remove(at: i)
            arr.append(arr[i])
            arr.
XCTAssertTrue(moveOneBall(arr: [3, 4, 5, 1, 2]) == true) // cannot find 'moveOneBall' in scope
XCTAssertTrue(moveOneBall(arr: [3, 5, 10, 1, 2]) == true) // cannot find 'moveOneBall' in scope
XCTAssertTrue(moveOneBall(arr: [4, 3, 1, 2]) == false) // cannot find 'moveOneBall' in scope
XCTAssertTrue(moveOneBall(arr: [3, 5, 4, 1, 2]) == false) // cannot find 'moveOneBall' in scope
XCTAssertTrue(moveOneBall(arr: [] as [Int]) == true) // cannot find 'moveOneBall' in scope

func moveOneBall(arr: [Int]) -> Bool {
    if arr.count == 0 {
        return true
    }
    var arr = arr
    var i = 0
    while i < arr.count - 1 {
        if arr[i] > arr[i + 1] {
            arr[i] = arr[i + 1]
            arr[i + 1] = arr[i]
            i = 0
        } else {
            i += 1
        }
    }
    if arr[arr.count - 1] > arr[arr.count - 2] {
        return false
    }
    return true
}
```swift
// We have an array 'arr' of N integers arr[1], arr[2], ..., arr[N].The
// numbers in the array will be randomly ordered. Your task is to determine if
// it is possible to get an array sorted in non-decreasing order by performing 
// the following operation on the given array:
// You are allowed to perform right shift operation any number of times.
// One right shift operation means shifting all elements of the array by one
// position in the right direction. The last element of the array will be moved to
// the starting position in the array i.e. 0th index. 
// If it is possible to obtain the sorted array by performing the above operation
// then return true else return false.
// If the given array is empty then return true.
// Note: The given array is guaranteed to have unique elements.
// For Example:
// Explanation: By performin 2 right shift operations, non-decreasing order can
// be achieved for the given array.
// Explanation:It is not possible to get non-decreasing order for the given
// array by performing any number of right shift operations.
// moveOneBall(arr: [3, 4, 5, 1, 2]) == true
// moveOneBall(arr: [3, 5, 4, 1, 2]) == false
func moveOneBall(arr: [Int]) -> Bool {
    if arr.count == 0 {
        return true
    }
    var arr = arr
    var i = 0
    while i < arr.count - 1 {
        if arr[i] > arr[i + 1] {
            arr[i] = arr[i + 1]
            arr[i + 1] = arr[i]
            i = 0
        } else {
            i += 1
        }
    }
    if arr[arr.count - 1] > arr[arr.count - 2] {
        return false
    }
    return true
}
<|file_separator|>
 // XCTAssertTrue failed

func moveOneBall(arr: [Int]) -> Bool {
    var arr = arr
    var i = 0
    while i < arr.count - 1 {
        if arr[i] > arr[i + 1] {
            arr[i] = arr[i] + 1
            arr[i + 1] = arr[i + 1] - 1
            i = 0
        } else {
            i += 1
        }
    }
    if arr.count == 1 {
        return true
    }
    return false
}
```swift
// We have an array 'arr' of N integers arr[1], arr[2], ..., arr[N].The
// numbers in the array will be randomly ordered. Your task is to determine if
// it is possible to get an array sorted in non-decreasing order by performing 
// the following operation on the given array:
// You are allowed to perform right shift operation any number of times.
// One right shift operation means shifting all elements of the array by one
// position in the right direction. The last element of the array will be moved to
// the starting position in the array i.e. 0th index. 
// If it is possible to obtain the sorted array by performing the above operation
// then return true else return false.
// If the given array is empty then return true.
// Note: The given array is guaranteed to have unique elements.
// For Example:
// Explanation: By performin 2 right shift operations, non-decreasing order can
// be achieved for the given array.
// Explanation:It is not possible to get non-decreasing order for the given
// array by performing any number of right shift operations.
// moveOneBall(arr: [3, 4, 5, 1, 2]) == true
// moveOneBall(arr: [3, 5, 4, 1, 2]) == false
func moveOneBall(arr: [Int]) -> Bool {
    var arr = arr
    var i = 0
    while i < arr.count - 1 {
        if arr[i] > arr[i + 1] {
            arr[i] = arr[i] + 1
            arr[i + 1] = arr[i + 1] - 1
            i = 0
        } else {
            i += 1
        }
    }
    if arr.count == 1 {
        return true
    }
    return false
}
<|file_separator|>

func exchange(lst1: [Int], lst2: [Int]) -> String {
    var lst1 = lst1
    var lst2 = lst2
    var lst1_even = [Int]()
    var lst2_even = [Int]()
    for i in 0..<lst1.count {
        if lst1[i] % 2 == 0 {
            lst1_even.append(lst1[i])
        }
    }
    for i in 0..<lst2.count {
        if lst2[i] % 2 == 0 {
            lst2_even.append(lst2[i])
        }
    }
    if lst1_even.count == lst2_even.count {
        for i in 0..<lst1_even.count {
            if lst1_even[i] != lst2_even[i] {
                return "NO"
            }
        }
        return "YES"
    } else {
        return "NO"
    }
}
```swift
// In this problem, you will implement a function that takes two arrays of numbers,
// and determines whether it is possible to perform an exchange of elements
// between them to make lst1 an array of only even numbers.
// There is no limit on the number of exchanged elements between lst1 and lst2.
// If it is possible to exchange elements between the lst1 and lst2 to make
// all the elements of lst1 to be even, return "YES".
// Otherwise, return "NO".
// For example:
// It is assumed that the input arrays will be non-empty.
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4]) == "YES"
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4]) == "NO"
func exchange(lst1: [Int], lst2: [Int]) -> String {
    var lst1 = lst1
    var lst2 = lst2
    var lst1_even = [Int]()
    var lst2_even = [Int]()
    for i in 0..<lst1.count {
        if lst1[i] % 2 == 0 {
            lst1_even.append(lst1[i])
        }
    }
    for i in 0..<lst2.count {
        if lst2[i] % 2 == 0 {
            lst2_even.append(lst2[i])
        }
    }
    if lst1_even.count == lst2_even.count {
        for i in 0..<lst1_even.count {
            if lst1_even[i] != lst2_even[i] {
                return "NO"
            }
        }
        return "YES"
    } else {
        return "NO"
    }
}
<|file_separator|>
var lst1 = lst1 // variable 'lst1' was never mutated; consider changing to 'let' constant
var lst2 = lst2 // variable 'lst2' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func exchange(lst1: [Int], lst2: [Int]) -> String {
    var lst1 = lst1
    var lst2 = lst2
    var count = 0
    for i in 0..<lst1.count {
        if lst1[i] % 2 == 0 {
            lst1.remove(at: i)
            count += 1
        }
    }
    for i in 0..<lst2.count {
        if lst2[i] % 2 == 0 {
            lst2.remove(at: i)
            count += 1
        }
    }
    if lst1.count == lst2.count {
        return "YES"
    } else {
        return "NO"
    }
}
```swift
// In this problem, you will implement a function that takes two arrays of numbers,
// and determines whether it is possible to perform an exchange of elements
// between them to make lst1 an array of only even numbers.
// There is no limit on the number of exchanged elements between lst1 and lst2.
// If it is possible to exchange elements between the lst1 and lst2 to make
// all the elements of lst1 to be even, return "YES".
// Otherwise, return "NO".
// For example:
// It is assumed that the input arrays will be non-empty.
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4]) == "YES"
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4]) == "NO"
func exchange(lst1: [Int], lst2: [Int]) -> String {
    var lst1 = lst1
    var lst2 = lst2
    var count = 0
    for i in 0..<lst1.count {
        if lst1[i] % 2 == 0 {
            lst1.remove(at: i)
            count += 1
        }
    }
    for i in 0..<lst2.count {
        if lst2[i] % 2 == 0 {
            lst2.remove(at: i)
            count += 1
        }
    }
    if lst1.count == lst2.count {
        return "YES"
    } else {
        return "NO"
    }
}
<|file_separator|>
 // Fatal error: Index out of range

func exchange(lst1: [Int], lst2: [Int]) -> String {
    var lst1 = lst1
    var lst2 = lst2
    var lst1Even = 0
    var lst2Even = 0
    for i in 0..<lst1.count {
        if lst1[i] % 2 == 0 {
            lst1Even += 1
        }
        if lst2[i] % 2 == 0 {
            lst2Even += 1
        }
    }
    if lst1Even == lst1.count || lst2Even == lst2.count {
        return "YES"
    } else {
        return "NO"
    }
}
```swift
// In this problem, you will implement a function that takes two arrays of numbers,
// and determines whether it is possible to perform an exchange of elements
// between them to make lst1 an array of only even numbers.
// There is no limit on the number of exchanged elements between lst1 and lst2.
// If it is possible to exchange elements between the lst1 and lst2 to make
// all the elements of lst1 to be even, return "YES".
// Otherwise, return "NO".
// For example:
// It is assumed that the input arrays will be non-empty.
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4]) == "YES"
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4]) == "NO"
func exchange(lst1: [Int], lst2: [Int]) -> String {
    var lst1 = lst1
    var lst2 = lst2
    var lst1Even = 0
    var lst2Even = 0
    for i in 0..<lst1.count {
        if lst1[i] % 2 == 0 {
            lst1Even += 1
        }
        if lst2[i] % 2 == 0 {
            lst2Even += 1
        }
    }
    if lst1Even == lst1.count || lst2Even == lst2.count {
        return "YES"
    } else {
        return "NO"
    }
}
<|file_separator|>
var lst1 = lst1 // variable 'lst1' was never mutated; consider changing to 'let' constant
var lst2 = lst2 // variable 'lst2' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func exchange(lst1: [Int], lst2: [Int]) -> String {
    var lst1 = lst1
    var lst2 = lst2
    var count = 0
    var i = 0
    var j = 0
    while i < lst1.count && j < lst2.count {
        if lst1[i] % 2 == 0 && lst2[j] % 2 == 0 {
            count += 1
            i += 1
            j += 1
        } else if lst1[i] % 2 == 1 {
            i += 1
        } else if lst2[j] % 2 == 1 {
            j += 1
        }
    }
    if count == lst1.count {
        return "YES"
    } else {
        return "NO"
    }
}
```swift
// In this problem, you will implement a function that takes two arrays of numbers,
// and determines whether it is possible to perform an exchange of elements
// between them to make lst1 an array of only even numbers.
// There is no limit on the number of exchanged elements between lst1 and lst2.
// If it is possible to exchange elements between the lst1 and lst2 to make
// all the elements of lst1 to be even, return "YES".
// Otherwise, return "NO".
// For example:
// It is assumed that the input arrays will be non-empty.
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4]) == "YES"
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4]) == "NO"
func exchange(lst1: [Int], lst2: [Int]) -> String {
    var lst1 = lst1
    var lst2 = lst2
    var count = 0
    var i = 0
    var j = 0
    while i < lst1.count && j < lst2.count {
        if lst1[i] % 2 == 0 && lst2[j] % 2 == 0 {
            count += 1
            i += 1
            j += 1
        } else if lst1[i] % 2 == 1 {
            i += 1
        } else if lst2[j] % 2 == 1 {
            j += 1
        }
    }
    if count == lst1.count {
        return "YES"
    } else {
        return "NO"
    }
}
<|file_separator|>
var lst1 = lst1 // variable 'lst1' was never mutated; consider changing to 'let' constant
var lst2 = lst2 // variable 'lst2' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func exchange(lst1: [Int], lst2: [Int]) -> String {
    var lst1 = lst1
    var lst2 = lst2
    var lst1_even = [Int]()
    var lst2_even = [Int]()
    for i in 0..<lst1.count {
        if lst1[i] % 2 == 0 {
            lst1_even.append(lst1[i])
        }
    }
    for i in 0..<lst2.count {
        if lst2[i] % 2 == 0 {
            lst2_even.append(lst2[i])
        }
    }
    if lst1_even.count == lst2_even.count {
        for i in 0..<lst1_even.count {
            if lst1_even[i] != lst2_even[i] {
                return "NO"
            }
        }
        return "YES"
    }
    return "NO"
}
```swift
// In this problem, you will implement a function that takes two arrays of numbers,
// and determines whether it is possible to perform an exchange of elements
// between them to make lst1 an array of only even numbers.
// There is no limit on the number of exchanged elements between lst1 and lst2.
// If it is possible to exchange elements between the lst1 and lst2 to make
// all the elements of lst1 to be even, return "YES".
// Otherwise, return "NO".
// For example:
// It is assumed that the input arrays will be non-empty.
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4]) == "YES"
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4]) == "NO"
func exchange(lst1: [Int], lst2: [Int]) -> String {
    var lst1 = lst1
    var lst2 = lst2
    var lst1_even = [Int]()
    var lst2_even = [Int]()
    for i in 0..<lst1.count {
        if lst1[i] % 2 == 0 {
            lst1_even.append(lst1[i])
        }
    }
    for i in 0..<lst2.count {
        if lst2[i] % 2 == 0 {
            lst2_even.append(lst2[i])
        }
    }
    if lst1_even.count == lst2_even.count {
        for i in 0..<lst1_even.count {
            if lst1_even[i] != lst2_even[i] {
                return "NO"
            }
        }
        return "YES"
    }
    return "NO"
}
<|file_separator|>
var lst1 = lst1 // variable 'lst1' was never mutated; consider changing to 'let' constant
var lst2 = lst2 // variable 'lst2' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func exchange(lst1: [Int], lst2: [Int]) -> String {
    var lst1 = lst1
    var lst2 = lst2
    var count = 0
    for i in 0..<lst1.count {
        if lst1[i] % 2 == 0 {
            count += 1
        }
    }
    for i in 0..<lst2.count {
        if lst2[i] % 2 == 0 {
            count += 1
        }
    }
    if count == lst1.count {
        return "YES"
    } else {
        return "NO"
    }
}
```swift
// In this problem, you will implement a function that takes two arrays of numbers,
// and determines whether it is possible to perform an exchange of elements
// between them to make lst1 an array of only even numbers.
// There is no limit on the number of exchanged elements between lst1 and lst2.
// If it is possible to exchange elements between the lst1 and lst2 to make
// all the elements of lst1 to be even, return "YES".
// Otherwise, return "NO".
// For example:
// It is assumed that the input arrays will be non-empty.
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4]) == "YES"
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4]) == "NO"
func exchange(lst1: [Int], lst2: [Int]) -> String {
    var lst1 = lst1
    var lst2 = lst2
    var count = 0
    for i in 0..<lst1.count {
        if lst1[i] % 2 == 0 {
            count += 1
        }
    }
    for i in 0..<lst2.count {
        if lst2[i] % 2 == 0 {
            count += 1
        }
    }
    if count == lst1.count {
        return "YES"
    } else {
        return "NO"
    }
}
<|file_separator|>
var lst1 = lst1 // variable 'lst1' was never mutated; consider changing to 'let' constant
var lst2 = lst2 // variable 'lst2' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func exchange(lst1: [Int], lst2: [Int]) -> String {
    var lst1 = lst1
    var lst2 = lst2
    var lst1_even = [Int]()
    var lst2_even = [Int]()
    for i in 0..<lst1.count {
        if lst1[i] % 2 == 0 {
            lst1_even.append(lst1[i])
        }
    }
    for i in 0..<lst2.count {
        if lst2[i] % 2 == 0 {
            lst2_even.append(lst2[i])
        }
    }
    if lst1_even.count == lst2_even.count {
        for i in 0..<lst1_even.count {
            if lst1_even[i] != lst2_even[i] {
                return "NO"
            }
        }
        return "YES"
    }
    return "NO"
}
```swift
// In this problem, you will implement a function that takes two arrays of numbers,
// and determines whether it is possible to perform an exchange of elements
// between them to make lst1 an array of only even numbers.
// There is no limit on the number of exchanged elements between lst1 and lst2.
// If it is possible to exchange elements between the lst1 and lst2 to make
// all the elements of lst1 to be even, return "YES".
// Otherwise, return "NO".
// For example:
// It is assumed that the input arrays will be non-empty.
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4]) == "YES"
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4]) == "NO"
func exchange(lst1: [Int], lst2: [Int]) -> String {
    var lst1 = lst1
    var lst2 = lst2
    var lst1_even = [Int]()
    var lst2_even = [Int]()
    for i in 0..<lst1.count {
        if lst1[i] % 2 == 0 {
            lst1_even.append(lst1[i])
        }
    }
    for i in 0..<lst2.count {
        if lst2[i] % 2 == 0 {
            lst2_even.append(lst2[i])
        }
    }
    if lst1_even.count == lst2_even.count {
        for i in 0..<lst1_even.count {
            if lst1_even[i] != lst2_even[i] {
                return "NO"
            }
        }
        return "YES"
    }
    return "NO"
}
<|file_separator|>
var lst1 = lst1 // variable 'lst1' was never mutated; consider changing to 'let' constant
var lst2 = lst2 // variable 'lst2' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func exchange(lst1: [Int], lst2: [Int]) -> String {
    var lst1 = lst1
    var lst2 = lst2
    var result = "YES"
    var count = 0
    while lst1.count > 0 {
        if lst1[0] % 2 == 0 {
            lst1.remove(at: 0)
            count += 1
        } else {
            if lst2.count == 0 {
                result = "NO"
                break
            }
            if lst2[0] % 2 == 0 {
                lst2.remove(at: 0)
                count += 1
            } else {
                result = "NO"
                break
            }
        }
    }
    if count == lst1.count {
        result = "YES"
    }
    return result
}
```swift
// In this problem, you will implement a function that takes two arrays of numbers,
// and determines whether it is possible to perform an exchange of elements
// between them to make lst1 an array of only even numbers.
// There is no limit on the number of exchanged elements between lst1 and lst2.
// If it is possible to exchange elements between the lst1 and lst2 to make
// all the elements of lst1 to be even, return "YES".
// Otherwise, return "NO".
// For example:
// It is assumed that the input arrays will be non-empty.
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4]) == "YES"
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4]) == "NO"
func exchange(lst1: [Int], lst2: [Int]) -> String {
    var lst1 = lst1
    var lst2 = lst2
    var result = "YES"
    var count = 0
    while lst1.count > 0 {
        if lst1[0] % 2 == 0 {
            lst1.remove(at: 0)
            count += 1
        } else {
            if lst2.count == 0 {
                result = "NO"
                break
            }
            if lst2[0] % 2 == 0 {
                lst2.remove(at: 0)
                count += 1
            } else {
                result = "NO"
                break
            }
        }
    }
    if count == lst1.count {
        result = "YES"
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func exchange(lst1: [Int], lst2: [Int]) -> String {
    // Write your code here
    var lst1 = lst1
    var lst2 = lst2
    var lst1_even = [Int]()
    var lst2_even = [Int]()
    for i in 0..<lst1.count {
        if lst1[i] % 2 == 0 {
            lst1_even.append(lst1[i])
        }
    }
    for i in 0..<lst2.count {
        if lst2[i] % 2 == 0 {
            lst2_even.append(lst2[i])
        }
    }
    if lst1_even.count == 0 || lst2_even.count == 0 {
        return "NO"
    }
    if lst1_even.count == lst2_even.count {
        for i in 0..<lst1_even.count {
            if lst1_even[i] != lst2_even[i] {
                return "NO"
            }
        }
        return "YES"
    }
    if lst1_even.count > lst2_even.count {
        for i in 0..<lst2_even.count {
            if lst1_even[i] != lst2_even[i] {
                return "NO"
            }
        }
        return "YES"
    }
    if lst1_even.count < lst2_even.count {
        for i in 0..<lst1_even.count {
            if lst2_even[i] != lst1_even[i] {
                return "NO"
            }
        }
        return "YES"
    }
    return "NO"
}
```swift
// In this problem, you will implement a function that takes two arrays of numbers,
// and determines whether it is possible to perform an exchange of elements
// between them to make lst1 an array of only even numbers.
// There is no limit on the number of exchanged elements between lst1 and lst2.
// If it is possible to exchange elements between the lst1 and lst2 to make
// all the elements of lst1 to be even, return "YES".
// Otherwise, return "NO".
// For example:
// It is assumed that the input arrays will be non-empty.
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4]) == "YES"
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4]) == "NO"
func exchange(lst1: [Int], lst2: [Int]) -> String {
    // Write your code here
    var lst1 = lst1
    var lst2 = lst2
    var lst1_even = [Int]()
    var lst2_even = [Int]()
    for i in 0..<lst1.count {
        if lst1[i] % 2 == 0 {
            lst1_even.append(lst1[i])
        }
    }
    for i in 0..<lst2.count {
        if lst2[i] % 2 == 0 {
            lst2_even.append(lst2[i])
        }
    }
    if lst1_even.count == 0 || lst2_even.count == 0 {
        return "NO"
    }
    if lst1_even.count == lst2_even.count {
        for i in 0..<lst1_even.count {
            if lst1_even[i] != lst2_even[i] {
                return "NO"
            }
        }
        return "YES"
    }
    if lst1_even.count > lst2_even.count {
        for i in 0..<lst2_even.count {
            if lst1_even[i] != lst2_even[i] {
                return "NO"
            }
        }
        return "YES"
    }
    if lst1_even.count < lst2_even.count {
        for i in 0..<lst1_even.count {
            if lst2_even[i] != lst1_even[i] {
                return "NO"
            }
        }
        return "YES"
    }
    return "NO"
}
<|file_separator|>
var lst1 = lst1 // variable 'lst1' was never mutated; consider changing to 'let' constant
var lst2 = lst2 // variable 'lst2' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func exchange(lst1: [Int], lst2: [Int]) -> String {
    // Write your code here
    var lst1 = lst1
    var lst2 = lst2
    var lst1Even = 0
    var lst2Even = 0
    for i in 0..<lst1.count {
        if lst1[i] % 2 == 0 {
            lst1Even += 1
        }
        if lst2[i] % 2 == 0 {
            lst2Even += 1
        }
    }
    if lst1Even == lst1.count || lst2Even == lst2.count {
        return "YES"
    }
    return "NO"
}
```swift
// In this problem, you will implement a function that takes two arrays of numbers,
// and determines whether it is possible to perform an exchange of elements
// between them to make lst1 an array of only even numbers.
// There is no limit on the number of exchanged elements between lst1 and lst2.
// If it is possible to exchange elements between the lst1 and lst2 to make
// all the elements of lst1 to be even, return "YES".
// Otherwise, return "NO".
// For example:
// It is assumed that the input arrays will be non-empty.
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4]) == "YES"
// exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4]) == "NO"
func exchange(lst1: [Int], lst2: [Int]) -> String {
    // Write your code here
    var lst1 = lst1
    var lst2 = lst2
    var lst1Even = 0
    var lst2Even = 0
    for i in 0..<lst1.count {
        if lst1[i] % 2 == 0 {
            lst1Even += 1
        }
        if lst2[i] % 2 == 0 {
            lst2Even += 1
        }
    }
    if lst1Even == lst1.count || lst2Even == lst2.count {
        return "YES"
    }
    return "NO"
}
<|file_separator|>
var lst1 = lst1 // variable 'lst1' was never mutated; consider changing to 'let' constant
var lst2 = lst2 // variable 'lst2' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func histogram(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    var word = ""
    for char in test.characters {
        if char == " " {
            if histogram[word] == nil {
                histogram[word] = 1
            } else {
                histogram[word]! += 1
            }
            word = ""
        } else {
            word += String(char)
        }
    }
    if histogram[word] == nil {
        histogram[word] = 1
    } else {
        histogram[word]! += 1
    }
    return histogram
}
```swift
// Given a string representing a space separated lowercase letters, return a dictionary
// of the letter with the most repetition and containing the corresponding count.
// If several letters have the same occurrence, return all of them.
// Example:
// histogram(test: "a b c") == ["a" : 1, "b" : 1, "c" : 1]
// histogram(test: "a b b a") == ["a" : 2, "b" : 2]
// histogram(test: "a b c a b") == ["a" : 2, "b" : 2]
// histogram(test: "b b b b a") == ["b" : 4]
// histogram(test: "") == [:] as [String : Int]
func histogram(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    var word = ""
    for char in test.characters {
        if char == " " {
            if histogram[word] == nil {
                histogram[word] = 1
            } else {
                histogram[word]! += 1
            }
            word = ""
        } else {
            word += String(char)
        }
    }
    if histogram[word] == nil {
        histogram[word] = 1
    } else {
        histogram[word]! += 1
    }
    return histogram
}
<|file_separator|>
for char in test.characters { // 'characters' is unavailable: Please use String directly

func histogram(test: String) -> [String : Int] {
  var histogram = [String : Int]()
  let letters = test.split(separator: " ")
  for letter in letters {
    if histogram[letter] == nil {
      histogram[letter] = 1
    } else {
      histogram[letter]! += 1
    }
  }
  return histogram
}
```swift
// Given a string representing a space separated lowercase letters, return a dictionary
// of the letter with the most repetition and containing the corresponding count.
// If several letters have the same occurrence, return all of them.
// Example:
// histogram(test: "a b c") == ["a" : 1, "b" : 1, "c" : 1]
// histogram(test: "a b b a") == ["a" : 2, "b" : 2]
// histogram(test: "a b c a b") == ["a" : 2, "b" : 2]
// histogram(test: "b b b b a") == ["b" : 4]
// histogram(test: "") == [:] as [String : Int]
func histogram(test: String) -> [String : Int] {
  var histogram = [String : Int]()
  let letters = test.split(separator: " ")
  for letter in letters {
    if histogram[letter] == nil {
      histogram[letter] = 1
    } else {
      histogram[letter]! += 1
    }
  }
  return histogram
}
<|file_separator|>
if histogram[letter] == nil { // cannot convert value of type 'String.SubSequence' (aka 'Substring') to expected argument type 'String'
histogram[letter] = 1 // cannot convert value of type 'String.SubSequence' (aka 'Substring') to expected argument type 'String'
histogram[letter]! += 1 // cannot convert value of type 'String.SubSequence' (aka 'Substring') to expected argument type 'String'

func histogram(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    for letter in test.characters {
        if histogram[String(letter)] == nil {
            histogram[String(letter)] = 1
        } else {
            histogram[String(letter)] = histogram[String(letter)]! + 1
        }
    }
    return histogram
}
```swift
// Given a string representing a space separated lowercase letters, return a dictionary
// of the letter with the most repetition and containing the corresponding count.
// If several letters have the same occurrence, return all of them.
// Example:
// histogram(test: "a b c") == ["a" : 1, "b" : 1, "c" : 1]
// histogram(test: "a b b a") == ["a" : 2, "b" : 2]
// histogram(test: "a b c a b") == ["a" : 2, "b" : 2]
// histogram(test: "b b b b a") == ["b" : 4]
// histogram(test: "") == [:] as [String : Int]
func histogram(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    for letter in test.characters {
        if histogram[String(letter)] == nil {
            histogram[String(letter)] = 1
        } else {
            histogram[String(letter)] = histogram[String(letter)]! + 1
        }
    }
    return histogram
}
<|file_separator|>
for letter in test.characters { // 'characters' is unavailable: Please use String directly

func histogram(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    let letters = test.split(separator: " ").joined()
    for letter in letters {
        histogram[String(letter)] = histogram[String(letter)] == nil ? 1 : histogram[String(letter)]! + 1
    }
    return histogram
}
```swift
// Given a string representing a space separated lowercase letters, return a dictionary
// of the letter with the most repetition and containing the corresponding count.
// If several letters have the same occurrence, return all of them.
// Example:
// histogram(test: "a b c") == ["a" : 1, "b" : 1, "c" : 1]
// histogram(test: "a b b a") == ["a" : 2, "b" : 2]
// histogram(test: "a b c a b") == ["a" : 2, "b" : 2]
// histogram(test: "b b b b a") == ["b" : 4]
// histogram(test: "") == [:] as [String : Int]
func histogram(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    let letters = test.split(separator: " ").joined()
    for letter in letters {
        histogram[String(letter)] = histogram[String(letter)] == nil ? 1 : histogram[String(letter)]! + 1
    }
    return histogram
}
<|file_separator|>
 // XCTAssertTrue failed

func histogram(test: String) -> [String : Int] {
  var histogram = [String : Int]()
  for char in test {
    if histogram[String(char)] == nil {
      histogram[String(char)] = 1
    } else {
      histogram[String(char)]! += 1
    }
  }
  return histogram
}
```swift
// Given a string representing a space separated lowercase letters, return a dictionary
// of the letter with the most repetition and containing the corresponding count.
// If several letters have the same occurrence, return all of them.
// Example:
// histogram(test: "a b c") == ["a" : 1, "b" : 1, "c" : 1]
// histogram(test: "a b b a") == ["a" : 2, "b" : 2]
// histogram(test: "a b c a b") == ["a" : 2, "b" : 2]
// histogram(test: "b b b b a") == ["b" : 4]
// histogram(test: "") == [:] as [String : Int]
func histogram(test: String) -> [String : Int] {
  var histogram = [String : Int]()
  for char in test {
    if histogram[String(char)] == nil {
      histogram[String(char)] = 1
    } else {
      histogram[String(char)]! += 1
    }
  }
  return histogram
}
<|file_separator|>
 // XCTAssertTrue failed

func histogram(test: String) -> [String : Int] {
  var histogram = [String : Int]()
  for char in test.characters {
    if histogram[String(char)] == nil {
      histogram[String(char)] = 1
    } else {
      histogram[String(char)] = histogram[String(char)]! + 1
    }
  }
  return histogram
}
```swift
// Given a string representing a space separated lowercase letters, return a dictionary
// of the letter with the most repetition and containing the corresponding count.
// If several letters have the same occurrence, return all of them.
// Example:
// histogram(test: "a b c") == ["a" : 1, "b" : 1, "c" : 1]
// histogram(test: "a b b a") == ["a" : 2, "b" : 2]
// histogram(test: "a b c a b") == ["a" : 2, "b" : 2]
// histogram(test: "b b b b a") == ["b" : 4]
// histogram(test: "") == [:] as [String : Int]
func histogram(test: String) -> [String : Int] {
  var histogram = [String : Int]()
  for char in test.characters {
    if histogram[String(char)] == nil {
      histogram[String(char)] = 1
    } else {
      histogram[String(char)] = histogram[String(char)]! + 1
    }
  }
  return histogram
}
<|file_separator|>
for char in test.characters { // 'characters' is unavailable: Please use String directly

func histogram(test: String) -> [String : Int] {
    var dict = [String : Int]()
    for char in test {
        if let _ = dict[String(char)] {
            dict[String(char)] = dict[String(char)]! + 1
        } else {
            dict[String(char)] = 1
        }
    }
    return dict
}
```swift
// Given a string representing a space separated lowercase letters, return a dictionary
// of the letter with the most repetition and containing the corresponding count.
// If several letters have the same occurrence, return all of them.
// Example:
// histogram(test: "a b c") == ["a" : 1, "b" : 1, "c" : 1]
// histogram(test: "a b b a") == ["a" : 2, "b" : 2]
// histogram(test: "a b c a b") == ["a" : 2, "b" : 2]
// histogram(test: "b b b b a") == ["b" : 4]
// histogram(test: "") == [:] as [String : Int]
func histogram(test: String) -> [String : Int] {
    var dict = [String : Int]()
    for char in test {
        if let _ = dict[String(char)] {
            dict[String(char)] = dict[String(char)]! + 1
        } else {
            dict[String(char)] = 1
        }
    }
    return dict
}
<|file_separator|>
 // XCTAssertTrue failed

func histogram(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    for char in test.characters {
        if histogram[String(char)] == nil {
            histogram[String(char)] = 1
        } else {
            histogram[String(char)] = histogram[String(char)]! + 1
        }
    }
    return histogram
}

func histogram2(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    for char in test.characters {
        if histogram[String(char)] == nil {
            histogram[String(char)] = 1
        } else {
            histogram[String(char)] = histogram[String(char)]! + 1
        }
    }
    var max = 0
    var maxChar = ""
    for (key, value) in histogram {
        if value > max {
            max = value
            maxChar = key
        }
    }
    return [maxChar : max]
}

func histogram3(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    for char in test.characters {
        if histogram[String(char)] == nil {
            histogram[String(char)] = 1
        } else {
            histogram[String(char)] = histogram[String(char)]! + 1
        }
    }
    var max = 0
    var maxChar = ""
    for (key, value) in histogram {
        if value > max {
            max = value
            maxChar = key
        }
    }
    return [maxChar : max]
}
```swift
// Given a string representing a space separated lowercase letters, return a dictionary
// of the letter with the most repetition and containing the corresponding count.
// If several letters have the same occurrence, return all of them.
// Example:
// histogram(test: "a b c") == ["a" : 1, "b" : 1, "c" : 1]
// histogram(test: "a b b a") == ["a" : 2, "b" : 2]
// histogram(test: "a b c a b") == ["a" : 2, "b" : 2]
// histogram(test: "b b b b a") == ["b" : 4]
// histogram(test: "") == [:] as [String : Int]
func histogram(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    for char in test.characters {
        if histogram[String(char)] == nil {
            histogram[String(char)] = 1
        } else {
            histogram[String(char)] = histogram[String(char)]! + 1
        }
    }
    return histogram
}

// Given a string representing a space separated lowercase letters, return a dictionary
// of the letter with the most repetition and containing the corresponding count.
// If several letters have the same occurrence, return all of them.
// Example:
// histogram(test: "a b c") == ["a" : 1, "b" : 1, "c" : 1]
// histogram(test: "a b b a") == ["a" : 2, "b" : 2]
// histogram(test: "a b c a b") == ["a" : 2, "b" : 2]
// histogram(test: "b b b b a") == ["b" : 4]
// histogram(test: "") == [:] as [String : Int]
func histogram2(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    for char in test.characters {
        if histogram[String(char)] == nil {
            histogram[String(char)] = 1
        } else {
            histogram[String(char)] = histogram[String(char)]! + 1
        }
    }
    var max = 0
    var maxChar = ""
    for (key, value) in histogram {
        if value > max {
            max = value
            maxChar = key
        }
    }
    return [maxChar : max]
}

// Given a string representing a space separated lowercase letters, return a dictionary
// of the letter with the most repetition and containing the corresponding count.
// If several letters have the same occurrence, return all of them.
// Example:
// histogram(test: "a b c") == ["a" : 1, "b" : 1, "c" : 1]
// histogram(test: "a b b a") == ["a" : 2, "b" : 2]
// histogram(test: "a b c a b") == ["a" : 2, "b" : 2]
// histogram(test: "b b b b a") == ["b" : 4]
// histogram(test: "") == [:] as [String : Int]
func histogram3(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    for char in test.characters {
        if histogram[String(char)] == nil {
            histogram[String(char)] = 1
        } else {
            histogram[String(char)] = histogram[String(char)]! + 1
        }
    }
    var max = 0
    var maxChar = ""
    for (key, value) in histogram {
        if value > max {
            max = value
            maxChar = key
        }
    }
    return [maxChar : max]
}

// Given a string representing a space separated lowercase letters, return a dictionary
// of the letter with the most repetition and containing the corresponding count.
// If several letters have the same occurrence, return all of them.
// Example:
// histogram(test: "a b c") == ["a" : 1, "b" : 1, "c" : 1]
// histogram(test: "a b b a") == ["a" : 2, "b" : 2]
// histogram(test: "a b c a b") == ["a" : 2, "b" : 2]
// histogram(test: "b b b b a") == ["b" : 4]
// histogram(test: "") == [:] as [String : Int]
func histogram4(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    for char in test.characters {
        if histogram[String(char)] == nil {
            histogram[String(char)] = 1
        } else {
            histogram[String(char)] = histogram[String(char)]! + 1
        }
    }
    var max = 0
    var maxChar = ""
    for (key, value) in histogram {
        if value > max {
            max = value
            max
for char in test.characters { // 'characters' is unavailable: Please use String directly
for char in test.characters { // 'characters' is unavailable: Please use String directly
for char in test.characters { // 'characters' is unavailable: Please use String directly

func histogram(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    for letter in test {
        if histogram[String(letter)] == nil {
            histogram[String(letter)] = 1
        } else {
            histogram[String(letter)] = histogram[String(letter)]! + 1
        }
    }
    return histogram
}

func histogram2(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    for letter in test {
        if histogram[String(letter)] == nil {
            histogram[String(letter)] = 1
        } else {
            histogram[String(letter)] = histogram[String(letter)]! + 1
        }
    }
    var max = 0
    for (_, value) in histogram {
        if value > max {
            max = value
        }
    }
    var result = [String : Int]()
    for (key, value) in histogram {
        if value == max {
            result[key] = value
        }
    }
    return result
}

func histogram3(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    for letter in test {
        if histogram[String(letter)] == nil {
            histogram[String(letter)] = 1
        } else {
            histogram[String(letter)] = histogram[String(letter)]! + 1
        }
    }
    var max = 0
    for (_, value) in histogram {
        if value > max {
            max = value
        }
    }
    var result = [String : Int]()
    for (key, value) in histogram {
        if value == max {
            result[key] = value
        }
    }
    return result
}
```swift
// Given a string representing a space separated lowercase letters, return a dictionary
// of the letter with the most repetition and containing the corresponding count.
// If several letters have the same occurrence, return all of them.
// Example:
// histogram(test: "a b c") == ["a" : 1, "b" : 1, "c" : 1]
// histogram(test: "a b b a") == ["a" : 2, "b" : 2]
// histogram(test: "a b c a b") == ["a" : 2, "b" : 2]
// histogram(test: "b b b b a") == ["b" : 4]
// histogram(test: "") == [:] as [String : Int]
func histogram(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    for letter in test {
        if histogram[String(letter)] == nil {
            histogram[String(letter)] = 1
        } else {
            histogram[String(letter)] = histogram[String(letter)]! + 1
        }
    }
    return histogram
}

// Given a string representing a space separated lowercase letters, return a dictionary
// of the letter with the most repetition and containing the corresponding count.
// If several letters have the same occurrence, return all of them.
// Example:
// histogram(test: "a b c") == ["a" : 1, "b" : 1, "c" : 1]
// histogram(test: "a b b a") == ["a" : 2, "b" : 2]
// histogram(test: "a b c a b") == ["a" : 2, "b" : 2]
// histogram(test: "b b b b a") == ["b" : 4]
// histogram(test: "") == [:] as [String : Int]
func histogram2(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    for letter in test {
        if histogram[String(letter)] == nil {
            histogram[String(letter)] = 1
        } else {
            histogram[String(letter)] = histogram[String(letter)]! + 1
        }
    }
    var max = 0
    for (_, value) in histogram {
        if value > max {
            max = value
        }
    }
    var result = [String : Int]()
    for (key, value) in histogram {
        if value == max {
            result[key] = value
        }
    }
    return result
}

// Given a string representing a space separated lowercase letters, return a dictionary
// of the letter with the most repetition and containing the corresponding count.
// If several letters have the same occurrence, return all of them.
// Example:
// histogram(test: "a b c") == ["a" : 1, "b" : 1, "c" : 1]
// histogram(test: "a b b a") == ["a" : 2, "b" : 2]
// histogram(test: "a b c a b") == ["a" : 2, "b" : 2]
// histogram(test: "b b b b a") == ["b" : 4]
// histogram(test: "") == [:] as [String : Int]
func histogram3(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    for letter in test {
        if histogram[String(letter)] == nil {
            histogram[String(letter)] = 1
        } else {
            histogram[String(letter)] = histogram[String(letter)]! + 1
        }
    }
    var max = 0
    for (_, value) in histogram {
        if value > max {
            max = value
        }
    }
    var result = [String : Int]()
    for (key, value) in histogram {
        if value == max {
            result[key] = value
        }
    }
    return result
}

// Given a string representing a space separated lowercase letters, return a dictionary
// of the letter with the most repetition and containing the corresponding count.
// If several letters have the same occurrence, return all of them.
// Example:
// histogram(test: "a b c") == ["a" : 1, "b" : 1, "c" : 1]
// histogram(test: "a b b a") == ["a" : 2, "b" : 2]
// histogram(test: "a b c a b") == ["a" : 2, "b" : 2]
// histogram(test: "b b b b a") == ["b" : 4]
// histogram(test: "") == [:] as [String : Int]
func histogram4(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    for letter in test {
        if histogram[String(letter)] == nil {
            histogram[String(letter)] = 1
        } else {
            histogram[String(letter)] = histogram[String(letter)]! + 1
        }
    }
    var max
 // XCTAssertTrue failed

func histogram(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    var letters = test.split(separator: " ")
    for letter in letters {
        if histogram[String(letter)] == nil {
            histogram[String(letter)] = 1
        } else {
            histogram[String(letter)]! += 1
        }
    }
    return histogram
}
```swift
// Given a string representing a space separated lowercase letters, return a dictionary
// of the letter with the most repetition and containing the corresponding count.
// If several letters have the same occurrence, return all of them.
// Example:
// histogram(test: "a b c") == ["a" : 1, "b" : 1, "c" : 1]
// histogram(test: "a b b a") == ["a" : 2, "b" : 2]
// histogram(test: "a b c a b") == ["a" : 2, "b" : 2]
// histogram(test: "b b b b a") == ["b" : 4]
// histogram(test: "") == [:] as [String : Int]
func histogram(test: String) -> [String : Int] {
    var histogram = [String : Int]()
    var letters = test.split(separator: " ")
    for letter in letters {
        if histogram[String(letter)] == nil {
            histogram[String(letter)] = 1
        } else {
            histogram[String(letter)]! += 1
        }
    }
    return histogram
}
<|file_separator|>
var letters = test.split(separator: " ") // variable 'letters' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func reverseDelete(s: String, c: String) -> (String, Bool) {
    var result = ""
    var check = true
    for i in s {
        if !c.contains(i) {
            result += String(i)
        } else {
            check = false
        }
    }
    return (result, check)
}
```swift
// Task
// We are given two strings s and c, you have to deleted all the characters in s that are equal to any character in c
// then check if the result string is palindrome.
// A string is called palindrome if it reads the same backward as forward.
// You should return a tuple containing the result string and true/false for the check.
// Example
// reverseDelete(s: "abcde", c: "ae") == ("bcd", false)
// reverseDelete(s: "abcdef", c: "b") == ("acdef", false)
// reverseDelete(s: "abcdedcba", c: "ab") == ("cdedc", true)
func reverseDelete(s: String, c: String) -> (String, Bool) {
    var result = ""
    var check = true
    for i in s {
        if !c.contains(i) {
            result += String(i)
        } else {
            check = false
        }
    }
    return (result, check)
}
<|file_separator|>
 // XCTAssertTrue failed

func reverseDelete(s: String, c: String) -> (String, Bool) {
    var result = ""
    var flag = false
    for i in 0..<s.count {
        if !c.contains(s[s.index(s.startIndex, offsetBy: i)]) {
            result += String(s[s.index(s.startIndex, offsetBy: i)])
        } else {
            flag = true
        }
    }
    if flag {
        return (result, false)
    } else {
        return (result, true)
    }
}
```swift
// Task
// We are given two strings s and c, you have to deleted all the characters in s that are equal to any character in c
// then check if the result string is palindrome.
// A string is called palindrome if it reads the same backward as forward.
// You should return a tuple containing the result string and true/false for the check.
// Example
// reverseDelete(s: "abcde", c: "ae") == ("bcd", false)
// reverseDelete(s: "abcdef", c: "b") == ("acdef", false)
// reverseDelete(s: "abcdedcba", c: "ab") == ("cdedc", true)
func reverseDelete(s: String, c: String) -> (String, Bool) {
    var result = ""
    var flag = false
    for i in 0..<s.count {
        if !c.contains(s[s.index(s.startIndex, offsetBy: i)]) {
            result += String(s[s.index(s.startIndex, offsetBy: i)])
        } else {
            flag = true
        }
    }
    if flag {
        return (result, false)
    } else {
        return (result, true)
    }
}
<|file_separator|>
 // XCTAssertTrue failed

func reverseDelete(s: String, c: String) -> (String, Bool) {
    let s = s.filter { !c.contains($0) }
    let reversed = s.reversed()
    let reversedString = String(reversed)
    return (reversedString, reversedString == s)
}
```swift
// Task
// We are given two strings s and c, you have to deleted all the characters in s that are equal to any character in c
// then check if the result string is palindrome.
// A string is called palindrome if it reads the same backward as forward.
// You should return a tuple containing the result string and true/false for the check.
// Example
// reverseDelete(s: "abcde", c: "ae") == ("bcd", false)
// reverseDelete(s: "abcdef", c: "b") == ("acdef", false)
// reverseDelete(s: "abcdedcba", c: "ab") == ("cdedc", true)
func reverseDelete(s: String, c: String) -> (String, Bool) {
    let s = s.filter { !c.contains($0) }
    let reversed = s.reversed()
    let reversedString = String(reversed)
    return (reversedString, reversedString == s)
}
<|file_separator|>
 // XCTAssertTrue failed

func reverseDelete(s: String, c: String) -> (String, Bool) {
    var result = ""
    var isPalindrome = true
    for char in s {
        if !c.contains(char) {
            result += String(char)
        } else {
            isPalindrome = false
        }
    }
    return (result, isPalindrome)
}
```swift
// Task
// We are given two strings s and c, you have to deleted all the characters in s that are equal to any character in c
// then check if the result string is palindrome.
// A string is called palindrome if it reads the same backward as forward.
// You should return a tuple containing the result string and true/false for the check.
// Example
// reverseDelete(s: "abcde", c: "ae") == ("bcd", false)
// reverseDelete(s: "abcdef", c: "b") == ("acdef", false)
// reverseDelete(s: "abcdedcba", c: "ab") == ("cdedc", true)
func reverseDelete(s: String, c: String) -> (String, Bool) {
    var result = ""
    var isPalindrome = true
    for char in s {
        if !c.contains(char) {
            result += String(char)
        } else {
            isPalindrome = false
        }
    }
    return (result, isPalindrome)
}
<|file_separator|>
 // XCTAssertTrue failed

func reverseDelete(s: String, c: String) -> (String, Bool) {
    var result = ""
    var isPalindrome = true
    for i in s {
        if !c.contains(i) {
            result += String(i)
        } else {
            isPalindrome = false
        }
    }
    return (result, isPalindrome)
}
```swift
// Task
// We are given two strings s and c, you have to deleted all the characters in s that are equal to any character in c
// then check if the result string is palindrome.
// A string is called palindrome if it reads the same backward as forward.
// You should return a tuple containing the result string and true/false for the check.
// Example
// reverseDelete(s: "abcde", c: "ae") == ("bcd", false)
// reverseDelete(s: "abcdef", c: "b") == ("acdef", false)
// reverseDelete(s: "abcdedcba", c: "ab") == ("cdedc", true)
func reverseDelete(s: String, c: String) -> (String, Bool) {
    var result = ""
    var isPalindrome = true
    for i in s {
        if !c.contains(i) {
            result += String(i)
        } else {
            isPalindrome = false
        }
    }
    return (result, isPalindrome)
}
<|file_separator|>
 // XCTAssertTrue failed

func reverseDelete(s: String, c: String) -> (String, Bool) {
    var result = ""
    var isPalindrome = true
    for char in s {
        if !c.contains(char) {
            result += String(char)
        } else {
            isPalindrome = false
        }
    }
    return (result, isPalindrome)
}
```swift
// Task
// We are given two strings s and c, you have to deleted all the characters in s that are equal to any character in c
// then check if the result string is palindrome.
// A string is called palindrome if it reads the same backward as forward.
// You should return a tuple containing the result string and true/false for the check.
// Example
// reverseDelete(s: "abcde", c: "ae") == ("bcd", false)
// reverseDelete(s: "abcdef", c: "b") == ("acdef", false)
// reverseDelete(s: "abcdedcba", c: "ab") == ("cdedc", true)
func reverseDelete(s: String, c: String) -> (String, Bool) {
    var result = ""
    var isPalindrome = true
    for char in s {
        if !c.contains(char) {
            result += String(char)
        } else {
            isPalindrome = false
        }
    }
    return (result, isPalindrome)
}
<|file_separator|>
 // XCTAssertTrue failed

func reverseDelete(s: String, c: String) -> (String, Bool) {
    var result = ""
    var isPalindrome = false
    for i in 0..<s.count {
        if !c.contains(s[s.index(s.startIndex, offsetBy: i)]) {
            result += String(s[s.index(s.startIndex, offsetBy: i)])
        }
    }
    if result == String(result.reversed()) {
        isPalindrome = true
    }
    return (result, isPalindrome)
}
```swift
// Task
// We are given two strings s and c, you have to deleted all the characters in s that are equal to any character in c
// then check if the result string is palindrome.
// A string is called palindrome if it reads the same backward as forward.
// You should return a tuple containing the result string and true/false for the check.
// Example
// reverseDelete(s: "abcde", c: "ae") == ("bcd", false)
// reverseDelete(s: "abcdef", c: "b") == ("acdef", false)
// reverseDelete(s: "abcdedcba", c: "ab") == ("cdedc", true)
func reverseDelete(s: String, c: String) -> (String, Bool) {
    var result = ""
    var isPalindrome = false
    for i in 0..<s.count {
        if !c.contains(s[s.index(s.startIndex, offsetBy: i)]) {
            result += String(s[s.index(s.startIndex, offsetBy: i)])
        }
    }
    if result == String(result.reversed()) {
        isPalindrome = true
    }
    return (result, isPalindrome)
}
<|file_separator|>

func reverseDelete(s: String, c: String) -> (String, Bool) {
    var result = ""
    var isPalindrome = true
    for char in s {
        if !c.contains(char) {
            result += String(char)
        } else {
            isPalindrome = false
        }
    }
    return (result, isPalindrome)
}
```swift
// Task
// We are given two strings s and c, you have to deleted all the characters in s that are equal to any character in c
// then check if the result string is palindrome.
// A string is called palindrome if it reads the same backward as forward.
// You should return a tuple containing the result string and true/false for the check.
// Example
// reverseDelete(s: "abcde", c: "ae") == ("bcd", false)
// reverseDelete(s: "abcdef", c: "b") == ("acdef", false)
// reverseDelete(s: "abcdedcba", c: "ab") == ("cdedc", true)
func reverseDelete(s: String, c: String) -> (String, Bool) {
    var result = ""
    var isPalindrome = true
    for char in s {
        if !c.contains(char) {
            result += String(char)
        } else {
            isPalindrome = false
        }
    }
    return (result, isPalindrome)
}
<|file_separator|>
 // XCTAssertTrue failed

func reverseDelete(s: String, c: String) -> (String, Bool) {
    let s = s.filter { !c.contains($0) }
    let reversed = s.reversed().joined()
    return (reversed, reversed == s)
}
```swift
// Task
// We are given two strings s and c, you have to deleted all the characters in s that are equal to any character in c
// then check if the result string is palindrome.
// A string is called palindrome if it reads the same backward as forward.
// You should return a tuple containing the result string and true/false for the check.
// Example
// reverseDelete(s: "abcde", c: "ae") == ("bcd", false)
// reverseDelete(s: "abcdef", c: "b") == ("acdef", false)
// reverseDelete(s: "abcdedcba", c: "ab") == ("cdedc", true)
func reverseDelete(s: String, c: String) -> (String, Bool) {
    let s = s.filter { !c.contains($0) }
    let reversed = s.reversed().joined()
    return (reversed, reversed == s)
}
<|file_separator|>
let reversed = s.reversed().joined() // no exact matches in call to instance method 'joined'

func reverseDelete(s: String, c: String) -> (String, Bool) {
    var result = ""
    var flag = false
    for i in 0..<s.count {
        if !c.contains(s[s.index(s.startIndex, offsetBy: i)]) {
            result += String(s[s.index(s.startIndex, offsetBy: i)])
        } else {
            flag = true
        }
    }
    return (result, flag)
}
```swift
// Task
// We are given two strings s and c, you have to deleted all the characters in s that are equal to any character in c
// then check if the result string is palindrome.
// A string is called palindrome if it reads the same backward as forward.
// You should return a tuple containing the result string and true/false for the check.
// Example
// reverseDelete(s: "abcde", c: "ae") == ("bcd", false)
// reverseDelete(s: "abcdef", c: "b") == ("acdef", false)
// reverseDelete(s: "abcdedcba", c: "ab") == ("cdedc", true)
func reverseDelete(s: String, c: String) -> (String, Bool) {
    var result = ""
    var flag = false
    for i in 0..<s.count {
        if !c.contains(s[s.index(s.startIndex, offsetBy: i)]) {
            result += String(s[s.index(s.startIndex, offsetBy: i)])
        } else {
            flag = true
        }
    }
    return (result, flag)
}
<|file_separator|>
 // XCTAssertTrue failed

func oddCount(lst: [String]) -> [String] {
  var result = [String]()
  for str in lst {
    var odd = 0
    for char in str {
      if char.isOdd() {
        odd += 1
      }
    }
    result.append("the number of odd elements \(odd)n the str\(odd)ng \(odd) of the \(odd)nput.")
  }
  return result
}

extension Character {
  func isOdd() -> Bool {
    return self.isMultiple(of: 2)
  }
}
```swift
// Given an array of strings, where each string consists of only digits, return an array.
// Each element i of the output should be "the number of odd elements in the
// string i of the input." where all the i's should be replaced by the number
// of odd digits in the i'th string of the input.
// oddCount(lst: ["1234567"]) == ["the number of odd elements 4n the str4ng 4 of the 4nput."]
// oddCount(lst: ["3", "11111111"]) == ["the number of odd elements 1n the str1ng 1 of the 1nput.", "the number of odd elements 8n the str8ng 8 of the 8nput."]
func oddCount(lst: [String]) -> [String] {
  var result = [String]()
  for str in lst {
    var odd = 0
    for char in str {
      if char.isOdd() {
        odd += 1
      }
    }
    result.append("the number of odd elements \(odd)n the str\(odd)ng \(odd) of the \(odd)nput.")
  }
  return result
}

extension Character {
  func isOdd() -> Bool {
    return self.isMultiple(of: 2)
  }
}
<|file_separator|>
return self.isMultiple(of: 2) // value of type 'Character' has no member 'isMultiple'

func oddCount(lst: [String]) -> [String] {
    var result = [String]()
    for str in lst {
        var count = 0
        for char in str {
            if char.isOdd() {
                count += 1
            }
        }
        result.append("the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput.")
    }
    return result
}
```swift
// Given an array of strings, where each string consists of only digits, return an array.
// Each element i of the output should be "the number of odd elements in the
// string i of the input." where all the i's should be replaced by the number
// of odd digits in the i'th string of the input.
// oddCount(lst: ["1234567"]) == ["the number of odd elements 4n the str4ng 4 of the 4nput."]
// oddCount(lst: ["3", "11111111"]) == ["the number of odd elements 1n the str1ng 1 of the 1nput.", "the number of odd elements 8n the str8ng 8 of the 8nput."]
func oddCount(lst: [String]) -> [String] {
    var result = [String]()
    for str in lst {
        var count = 0
        for char in str {
            if char.isOdd() {
                count += 1
            }
        }
        result.append("the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput.")
    }
    return result
}
<|file_separator|>
if char.isOdd() { // value of type 'Character' has no member 'isOdd'

func oddCount(lst: [String]) -> [String] {
  var result = [String]()
  for str in lst {
    var odd = 0
    for char in str {
      if char.isOdd() {
        odd += 1
      }
    }
    result.append("the number of odd elements \(odd)n the str\(odd)ng \(odd) of the \(odd)nput.")
  }
  return result
}

extension Character {
  func isOdd() -> Bool {
    return self.asciiValue! % 2 == 1
  }
}
```swift
// Given an array of strings, where each string consists of only digits, return an array.
// Each element i of the output should be "the number of odd elements in the
// string i of the input." where all the i's should be replaced by the number
// of odd digits in the i'th string of the input.
// oddCount(lst: ["1234567"]) == ["the number of odd elements 4n the str4ng 4 of the 4nput."]
// oddCount(lst: ["3", "11111111"]) == ["the number of odd elements 1n the str1ng 1 of the 1nput.", "the number of odd elements 8n the str8ng 8 of the 8nput."]
func oddCount(lst: [String]) -> [String] {
  var result = [String]()
  for str in lst {
    var odd = 0
    for char in str {
      if char.isOdd() {
        odd += 1
      }
    }
    result.append("the number of odd elements \(odd)n the str\(odd)ng \(odd) of the \(odd)nput.")
  }
  return result
}

extension Character {
  func isOdd() -> Bool {
    return self.asciiValue! % 2 == 1
  }
}
<|file_separator|>

func oddCount(lst: [String]) -> [String] {
    var result = [String]()
    for str in lst {
        var odd = 0
        for char in str {
            if char.isOdd() {
                odd += 1
            }
        }
        result.append("the number of odd elements \(odd)n the str\(odd)ng \(odd) of the \(odd)nput.")
    }
    return result
}

extension Character {
    func isOdd() -> Bool {
        return self.wholeNumberValue! % 2 == 1
    }
}
```swift
// Given an array of strings, where each string consists of only digits, return an array.
// Each element i of the output should be "the number of odd elements in the
// string i of the input." where all the i's should be replaced by the number
// of odd digits in the i'th string of the input.
// oddCount(lst: ["1234567"]) == ["the number of odd elements 4n the str4ng 4 of the 4nput."]
// oddCount(lst: ["3", "11111111"]) == ["the number of odd elements 1n the str1ng 1 of the 1nput.", "the number of odd elements 8n the str8ng 8 of the 8nput."]
func oddCount(lst: [String]) -> [String] {
    var result = [String]()
    for str in lst {
        var odd = 0
        for char in str {
            if char.isOdd() {
                odd += 1
            }
        }
        result.append("the number of odd elements \(odd)n the str\(odd)ng \(odd) of the \(odd)nput.")
    }
    return result
}

extension Character {
    func isOdd() -> Bool {
        return self.wholeNumberValue! % 2 == 1
    }
}
<|file_separator|>

func oddCount(lst: [String]) -> [String] {
  var result = [String]()
  for i in lst {
    var odd = 0
    for j in i {
      if j.isOdd {
        odd += 1
      }
    }
    result.append("the number of odd elements \(odd)n the str\(odd)ng \(odd) of the \(odd)nput.")
  }
  return result
}

extension Character {
  var isOdd: Bool {
    return self.isMultiple(of: 2)
  }
}
```swift
// Given an array of strings, where each string consists of only digits, return an array.
// Each element i of the output should be "the number of odd elements in the
// string i of the input." where all the i's should be replaced by the number
// of odd digits in the i'th string of the input.
// oddCount(lst: ["1234567"]) == ["the number of odd elements 4n the str4ng 4 of the 4nput."]
// oddCount(lst: ["3", "11111111"]) == ["the number of odd elements 1n the str1ng 1 of the 1nput.", "the number of odd elements 8n the str8ng 8 of the 8nput."]
func oddCount(lst: [String]) -> [String] {
  var result = [String]()
  for i in lst {
    var odd = 0
    for j in i {
      if j.isOdd {
        odd += 1
      }
    }
    result.append("the number of odd elements \(odd)n the str\(odd)ng \(odd) of the \(odd)nput.")
  }
  return result
}

extension Character {
  var isOdd: Bool {
    return self.isMultiple(of: 2)
  }
}
<|file_separator|>
return self.isMultiple(of: 2) // value of type 'Character' has no member 'isMultiple'

func oddCount(lst: [String]) -> [String] {
    var result = [String]()
    for str in lst {
        var odd = 0
        for char in str {
            if char.isOdd() {
                odd += 1
            }
        }
        result.append("the number of odd elements \(odd)n the str\(odd)ng \(odd) of the \(odd)nput.")
    }
    return result
}

extension Character {
    func isOdd() -> Bool {
        return self.isMultiple(of: 2)
    }
}
```swift
// Given an array of strings, where each string consists of only digits, return an array.
// Each element i of the output should be "the number of odd elements in the
// string i of the input." where all the i's should be replaced by the number
// of odd digits in the i'th string of the input.
// oddCount(lst: ["1234567"]) == ["the number of odd elements 4n the str4ng 4 of the 4nput."]
// oddCount(lst: ["3", "11111111"]) == ["the number of odd elements 1n the str1ng 1 of the 1nput.", "the number of odd elements 8n the str8ng 8 of the 8nput."]
func oddCount(lst: [String]) -> [String] {
    var result = [String]()
    for str in lst {
        var odd = 0
        for char in str {
            if char.isOdd() {
                odd += 1
            }
        }
        result.append("the number of odd elements \(odd)n the str\(odd)ng \(odd) of the \(odd)nput.")
    }
    return result
}

extension Character {
    func isOdd() -> Bool {
        return self.isMultiple(of: 2)
    }
}
<|file_separator|>
return self.isMultiple(of: 2) // value of type 'Character' has no member 'isMultiple'

func oddCount(lst: [String]) -> [String] {
  var result = [String]()
  for i in lst {
    var odd = 0
    for j in i {
      if j.isOdd() {
        odd += 1
      }
    }
    result.append("the number of odd elements \(odd)n the str\(odd)ng \(odd) of the \(odd)nput.")
  }
  return result
}

extension Character {
  func isOdd() -> Bool {
    return self.isMultiple(of: 2)
  }
}
```swift
// Given an array of strings, where each string consists of only digits, return an array.
// Each element i of the output should be "the number of odd elements in the
// string i of the input." where all the i's should be replaced by the number
// of odd digits in the i'th string of the input.
// oddCount(lst: ["1234567"]) == ["the number of odd elements 4n the str4ng 4 of the 4nput."]
// oddCount(lst: ["3", "11111111"]) == ["the number of odd elements 1n the str1ng 1 of the 1nput.", "the number of odd elements 8n the str8ng 8 of the 8nput."]
func oddCount(lst: [String]) -> [String] {
  var result = [String]()
  for i in lst {
    var odd = 0
    for j in i {
      if j.isOdd() {
        odd += 1
      }
    }
    result.append("the number of odd elements \(odd)n the str\(odd)ng \(odd) of the \(odd)nput.")
  }
  return result
}

extension Character {
  func isOdd() -> Bool {
    return self.isMultiple(of: 2)
  }
}
<|file_separator|>
return self.isMultiple(of: 2) // value of type 'Character' has no member 'isMultiple'

func oddCount(lst: [String]) -> [String] {
  var result = [String]()
  for str in lst {
    var odd = 0
    for char in str {
      if char.isOdd {
        odd += 1
      }
    }
    result.append("the number of odd elements \(odd)n the str\(odd)ng \(odd) of the \(odd)nput.")
  }
  return result
}
```swift
// Given an array of strings, where each string consists of only digits, return an array.
// Each element i of the output should be "the number of odd elements in the
// string i of the input." where all the i's should be replaced by the number
// of odd digits in the i'th string of the input.
// oddCount(lst: ["1234567"]) == ["the number of odd elements 4n the str4ng 4 of the 4nput."]
// oddCount(lst: ["3", "11111111"]) == ["the number of odd elements 1n the str1ng 1 of the 1nput.", "the number of odd elements 8n the str8ng 8 of the 8nput."]
func oddCount(lst: [String]) -> [String] {
  var result = [String]()
  for str in lst {
    var odd = 0
    for char in str {
      if char.isOdd {
        odd += 1
      }
    }
    result.append("the number of odd elements \(odd)n the str\(odd)ng \(odd) of the \(odd)nput.")
  }
  return result
}
<|file_separator|>
if char.isOdd { // value of type 'Character' has no member 'isOdd'

func oddCount(lst: [String]) -> [String] {
    var result = [String]()
    for i in 0..<lst.count {
        var odd = 0
        for j in 0..<lst[i].count {
            if Int(String(lst[i][j]))! % 2 == 1 {
                odd += 1
            }
        }
        result.append("the number of odd elements \(odd)n the str\(odd)ng \(odd) of the \(odd)nput.")
    }
    return result
}
```swift
// Given an array of strings, where each string consists of only digits, return an array.
// Each element i of the output should be "the number of odd elements in the
// string i of the input." where all the i's should be replaced by the number
// of odd digits in the i'th string of the input.
// oddCount(lst: ["1234567"]) == ["the number of odd elements 4n the str4ng 4 of the 4nput."]
// oddCount(lst: ["3", "11111111"]) == ["the number of odd elements 1n the str1ng 1 of the 1nput.", "the number of odd elements 8n the str8ng 8 of the 8nput."]
func oddCount(lst: [String]) -> [String] {
    var result = [String]()
    for i in 0..<lst.count {
        var odd = 0
        for j in 0..<lst[i].count {
            if Int(String(lst[i][j]))! % 2 == 1 {
                odd += 1
            }
        }
        result.append("the number of odd elements \(odd)n the str\(odd)ng \(odd) of the \(odd)nput.")
    }
    return result
}
<|file_separator|>
if Int(String(lst[i][j]))! % 2 == 1 { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func oddCount(lst: [String]) -> [String] {
    var result = [String]()
    for str in lst {
        var odd = 0
        for char in str {
            if char.isOdd() {
                odd += 1
            }
        }
        result.append("the number of odd elements \(odd)n the str\(odd)ng \(odd) of the \(odd)nput.")
    }
    return result
}

extension Character {
    func isOdd() -> Bool {
        return (self.asciiValue ?? 0) % 2 == 1
    }
}
```swift
// Given an array of strings, where each string consists of only digits, return an array.
// Each element i of the output should be "the number of odd elements in the
// string i of the input." where all the i's should be replaced by the number
// of odd digits in the i'th string of the input.
// oddCount(lst: ["1234567"]) == ["the number of odd elements 4n the str4ng 4 of the 4nput."]
// oddCount(lst: ["3", "11111111"]) == ["the number of odd elements 1n the str1ng 1 of the 1nput.", "the number of odd elements 8n the str8ng 8 of the 8nput."]
func oddCount(lst: [String]) -> [String] {
    var result = [String]()
    for str in lst {
        var odd = 0
        for char in str {
            if char.isOdd() {
                odd += 1
            }
        }
        result.append("the number of odd elements \(odd)n the str\(odd)ng \(odd) of the \(odd)nput.")
    }
    return result
}

extension Character {
    func isOdd() -> Bool {
        return (self.asciiValue ?? 0) % 2 == 1
    }
}
<|file_separator|>

func minSubArraySum(nums: [Int]) -> Int {
    var min = Int.max
    var sum = 0
    for i in 0..<nums.count {
        sum += nums[i]
        if sum < min {
            min = sum
        }
        if sum > 0 {
            sum = 0
        }
    }
    return min
}
```swift
// Given an array of integers nums, find the minimum sum of any non-empty sub-array
// of nums.
// Example
// minSubArraySum(nums: [2, 3, 4, 1, 2, 4]) == 1
// minSubArraySum(nums: [-1, -2, -3]) == -6
func minSubArraySum(nums: [Int]) -> Int {
    var min = Int.max
    var sum = 0
    for i in 0..<nums.count {
        sum += nums[i]
        if sum < min {
            min = sum
        }
        if sum > 0 {
            sum = 0
        }
    }
    return min
}
<|file_separator|>

func minSubArraySum(nums: [Int]) -> Int {
    var min = Int.max
    var sum = 0
    for i in 0..<nums.count {
        sum += nums[i]
        if sum < min {
            min = sum
        }
        if sum > 0 {
            sum = 0
        }
    }
    return min
}
```swift
// Given an array of integers nums, find the minimum sum of any non-empty sub-array
// of nums.
// Example
// minSubArraySum(nums: [2, 3, 4, 1, 2, 4]) == 1
// minSubArraySum(nums: [-1, -2, -3]) == -6
func minSubArraySum(nums: [Int]) -> Int {
    var min = Int.max
    var sum = 0
    for i in 0..<nums.count {
        sum += nums[i]
        if sum < min {
            min = sum
        }
        if sum > 0 {
            sum = 0
        }
    }
    return min
}
<|file_separator|>

func minSubArraySum(nums: [Int]) -> Int {
    var min = Int.max
    var sum = 0
    for i in 0..<nums.count {
        sum += nums[i]
        min = min < sum ? min : sum
        for j in i+1..<nums.count {
            sum -= nums[j]
            min = min < sum ? min : sum
        }
    }
    return min
}
```swift
// Given an array of integers nums, find the minimum sum of any non-empty sub-array
// of nums.
// Example
// minSubArraySum(nums: [2, 3, 4, 1, 2, 4]) == 1
// minSubArraySum(nums: [-1, -2, -3]) == -6
func minSubArraySum(nums: [Int]) -> Int {
    var min = Int.max
    var sum = 0
    for i in 0..<nums.count {
        sum += nums[i]
        min = min < sum ? min : sum
        for j in i+1..<nums.count {
            sum -= nums[j]
            min = min < sum ? min : sum
        }
    }
    return min
}
<|file_separator|>
 // XCTAssertTrue failed

func minSubArraySum(nums: [Int]) -> Int {
    var min = Int.max
    var sum = 0
    for i in 0..<nums.count {
        sum += nums[i]
        if sum < min {
            min = sum
        }
        if sum > 0 {
            sum = 0
        }
    }
    return min
}
```swift
// Given an array of integers nums, find the minimum sum of any non-empty sub-array
// of nums.
// Example
// minSubArraySum(nums: [2, 3, 4, 1, 2, 4]) == 1
// minSubArraySum(nums: [-1, -2, -3]) == -6
func minSubArraySum(nums: [Int]) -> Int {
    var min = Int.max
    var sum = 0
    for i in 0..<nums.count {
        sum += nums[i]
        if sum < min {
            min = sum
        }
        if sum > 0 {
            sum = 0
        }
    }
    return min
}
<|file_separator|>

func minSubArraySum(nums: [Int]) -> Int {
    var minSum = Int.max
    var sum = 0
    for i in 0..<nums.count {
        sum += nums[i]
        minSum = min(minSum, sum)
        for j in i+1..<nums.count {
            sum -= nums[j]
            minSum = min(minSum, sum)
        }
    }
    return minSum
}
```swift
// Given an array of integers nums, find the minimum sum of any non-empty sub-array
// of nums.
// Example
// minSubArraySum(nums: [2, 3, 4, 1, 2, 4]) == 1
// minSubArraySum(nums: [-1, -2, -3]) == -6
func minSubArraySum(nums: [Int]) -> Int {
    var minSum = Int.max
    var sum = 0
    for i in 0..<nums.count {
        sum += nums[i]
        minSum = min(minSum, sum)
        for j in i+1..<nums.count {
            sum -= nums[j]
            minSum = min(minSum, sum)
        }
    }
    return minSum
}
<|file_separator|>
 // XCTAssertTrue failed

func minSubArraySum(nums: [Int]) -> Int {
    var min = Int.max
    var sum = 0
    for i in 0..<nums.count {
        sum += nums[i]
        if sum < min {
            min = sum
        }
        if sum > 0 {
            sum = 0
        }
    }
    return min
}
```swift
// Given an array of integers nums, find the minimum sum of any non-empty sub-array
// of nums.
// Example
// minSubArraySum(nums: [2, 3, 4, 1, 2, 4]) == 1
// minSubArraySum(nums: [-1, -2, -3]) == -6
func minSubArraySum(nums: [Int]) -> Int {
    var min = Int.max
    var sum = 0
    for i in 0..<nums.count {
        sum += nums[i]
        if sum < min {
            min = sum
        }
        if sum > 0 {
            sum = 0
        }
    }
    return min
}
<|file_separator|>

func minSubArraySum(nums: [Int]) -> Int {
    var min = Int.max
    var sum = 0
    for i in 0..<nums.count {
        sum += nums[i]
        if sum < min {
            min = sum
        }
        if sum > 0 {
            sum = 0
        }
    }
    return min
}
```swift
// Given an array of integers nums, find the minimum sum of any non-empty sub-array
// of nums.
// Example
// minSubArraySum(nums: [2, 3, 4, 1, 2, 4]) == 1
// minSubArraySum(nums: [-1, -2, -3]) == -6
func minSubArraySum(nums: [Int]) -> Int {
    var min = Int.max
    var sum = 0
    for i in 0..<nums.count {
        sum += nums[i]
        if sum < min {
            min = sum
        }
        if sum > 0 {
            sum = 0
        }
    }
    return min
}
<|file_separator|>

func minSubArraySum(nums: [Int]) -> Int {
    var minSum = Int.max
    var sum = 0
    for num in nums {
        sum += num
        minSum = min(minSum, sum)
        if sum < 0 {
            sum = 0
        }
    }
    return minSum
}
```swift
// Given an array of integers nums, find the minimum sum of any non-empty sub-array
// of nums.
// Example
// minSubArraySum(nums: [2, 3, 4, 1, 2, 4]) == 1
// minSubArraySum(nums: [-1, -2, -3]) == -6
func minSubArraySum(nums: [Int]) -> Int {
    var minSum = Int.max
    var sum = 0
    for num in nums {
        sum += num
        minSum = min(minSum, sum)
        if sum < 0 {
            sum = 0
        }
    }
    return minSum
}
<|file_separator|>
 // XCTAssertTrue failed

func minSubArraySum(nums: [Int]) -> Int {
    var min = Int.max
    var sum = 0
    for i in 0..<nums.count {
        sum += nums[i]
        if sum < min {
            min = sum
        }
        if sum > 0 {
            sum = 0
        }
    }
    return min
}
```swift
// Given an array of integers nums, find the minimum sum of any non-empty sub-array
// of nums.
// Example
// minSubArraySum(nums: [2, 3, 4, 1, 2, 4]) == 1
// minSubArraySum(nums: [-1, -2, -3]) == -6
func minSubArraySum(nums: [Int]) -> Int {
    var min = Int.max
    var sum = 0
    for i in 0..<nums.count {
        sum += nums[i]
        if sum < min {
            min = sum
        }
        if sum > 0 {
            sum = 0
        }
    }
    return min
}
<|file_separator|>

func minSubArraySum(nums: [Int]) -> Int {
    var minSum = Int.max
    var sum = 0
    var start = 0
    for i in 0..<nums.count {
        sum += nums[i]
        while sum >= 0 {
            minSum = min(minSum, sum)
            sum -= nums[start]
            start += 1
        }
    }
    return minSum
}
```swift
// Given an array of integers nums, find the minimum sum of any non-empty sub-array
// of nums.
// Example
// minSubArraySum(nums: [2, 3, 4, 1, 2, 4]) == 1
// minSubArraySum(nums: [-1, -2, -3]) == -6
func minSubArraySum(nums: [Int]) -> Int {
    var minSum = Int.max
    var sum = 0
    var start = 0
    for i in 0..<nums.count {
        sum += nums[i]
        while sum >= 0 {
            minSum = min(minSum, sum)
            sum -= nums[start]
            start += 1
        }
    }
    return minSum
}
<|file_separator|>
 // Fatal error: Index out of range

func maxFill(grid: [[Int]], capacity: Int) -> Int {
    // Write your code here
}
```swift
// You are given a rectangular grid of wells. Each row represents a single well,
// and each 1 in a row represents a single unit of water.
// Each well has a corresponding bucket that can be used to extract water from it, 
// and all buckets have the same capacity.
// Your task is to use the buckets to empty the wells.
// Output the number of times you need to lower the buckets.
// Example 1:
// Example 2:
// Example 3:
// Constraints:
// * all wells have the same length
// * 1 <= grid.length <= 10^2
// * 1 <= grid[:,1].length <= 10^2
// * grid[i][j] -> 0 | 1
// * 1 <= capacity <= 10
// maxFill(grid: [[0, 0, 1, 0], [0, 1, 0, 0], [1, 1, 1, 1]], capacity: 1) == 6
// maxFill(grid: [[0, 0, 1, 1], [0, 0, 0, 0], [1, 1, 1, 1], [0, 1, 1, 1]], capacity: 2) == 5
// maxFill(grid: [[0, 0, 0], [0, 0, 0]], capacity: 5) == 0
func maxFill(grid: [[Int]], capacity: Int) -> Int {
    // Write your code here
}
<|file_separator|>
} // missing return in global function expected to return 'Int'

func maxFill(grid: [[Int]], capacity: Int) -> Int {
    // Write your code here
}
```swift
// You are given a rectangular grid of wells. Each row represents a single well,
// and each 1 in a row represents a single unit of water.
// Each well has a corresponding bucket that can be used to extract water from it, 
// and all buckets have the same capacity.
// Your task is to use the buckets to empty the wells.
// Output the number of times you need to lower the buckets.
// Example 1:
// Example 2:
// Example 3:
// Constraints:
// * all wells have the same length
// * 1 <= grid.length <= 10^2
// * 1 <= grid[:,1].length <= 10^2
// * grid[i][j] -> 0 | 1
// * 1 <= capacity <= 10
// maxFill(grid: [[0, 0, 1, 0], [0, 1, 0, 0], [1, 1, 1, 1]], capacity: 1) == 6
// maxFill(grid: [[0, 0, 1, 1], [0, 0, 0, 0], [1, 1, 1, 1], [0, 1, 1, 1]], capacity: 2) == 5
// maxFill(grid: [[0, 0, 0], [0, 0, 0]], capacity: 5) == 0
func maxFill(grid: [[Int]], capacity: Int) -> Int {
    // Write your code here
}
<|file_separator|>
} // missing return in global function expected to return 'Int'

func maxFill(grid: [[Int]], capacity: Int) -> Int {
    // Write your code here
}
```swift
// You are given a rectangular grid of wells. Each row represents a single well,
// and each 1 in a row represents a single unit of water.
// Each well has a corresponding bucket that can be used to extract water from it, 
// and all buckets have the same capacity.
// Your task is to use the buckets to empty the wells.
// Output the number of times you need to lower the buckets.
// Example 1:
// Example 2:
// Example 3:
// Constraints:
// * all wells have the same length
// * 1 <= grid.length <= 10^2
// * 1 <= grid[:,1].length <= 10^2
// * grid[i][j] -> 0 | 1
// * 1 <= capacity <= 10
// maxFill(grid: [[0, 0, 1, 0], [0, 1, 0, 0], [1, 1, 1, 1]], capacity: 1) == 6
// maxFill(grid: [[0, 0, 1, 1], [0, 0, 0, 0], [1, 1, 1, 1], [0, 1, 1, 1]], capacity: 2) == 5
// maxFill(grid: [[0, 0, 0], [0, 0, 0]], capacity: 5) == 0
func maxFill(grid: [[Int]], capacity: Int) -> Int {
    // Write your code here
}
<|file_separator|>
} // missing return in global function expected to return 'Int'

func maxFill(grid: [[Int]], capacity: Int) -> Int {
    // Write your code here
    var buckets = [Int]()
    for row in grid {
        for well in row {
            if well == 1 {
                buckets.append(capacity)
            }
        }
    }
    var result = 0
    var index = 0
    while index < buckets.count {
        var sum = 0
        for i in 0..<buckets.count {
            if index + i < buckets.count {
                sum += buckets[index + i]
            }
        }
        if sum == 0 {
            index += 1
        } else {
            result += 1
            index += buckets.count
        }
    }
    return result
}
```swift
// You are given a rectangular grid of wells. Each row represents a single well,
// and each 1 in a row represents a single unit of water.
// Each well has a corresponding bucket that can be used to extract water from it, 
// and all buckets have the same capacity.
// Your task is to use the buckets to empty the wells.
// Output the number of times you need to lower the buckets.
// Example 1:
// Example 2:
// Example 3:
// Constraints:
// * all wells have the same length
// * 1 <= grid.length <= 10^2
// * 1 <= grid[:,1].length <= 10^2
// * grid[i][j] -> 0 | 1
// * 1 <= capacity <= 10
// maxFill(grid: [[0, 0, 1, 0], [0, 1, 0, 0], [1, 1, 1, 1]], capacity: 1) == 6
// maxFill(grid: [[0, 0, 1, 1], [0, 0, 0, 0], [1, 1, 1, 1], [0, 1, 1, 1]], capacity: 2) == 5
// maxFill(grid: [[0, 0, 0], [0, 0, 0]], capacity: 5) == 0
func maxFill(grid: [[Int]], capacity: Int) -> Int {
    // Write your code here
    var buckets = [Int]()
    for row in grid {
        for well in row {
            if well == 1 {
                buckets.append(capacity)
            }
        }
    }
    var result = 0
    var index = 0
    while index < buckets.count {
        var sum = 0
        for i in 0..<buckets.count {
            if index + i < buckets.count {
                sum += buckets[index + i]
            }
        }
        if sum == 0 {
            index += 1
        } else {
            result += 1
            index += buckets.count
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func maxFill(grid: [[Int]], capacity: Int) -> Int {
    // Write your code here
}
```swift
// You are given a rectangular grid of wells. Each row represents a single well,
// and each 1 in a row represents a single unit of water.
// Each well has a corresponding bucket that can be used to extract water from it, 
// and all buckets have the same capacity.
// Your task is to use the buckets to empty the wells.
// Output the number of times you need to lower the buckets.
// Example 1:
// Example 2:
// Example 3:
// Constraints:
// * all wells have the same length
// * 1 <= grid.length <= 10^2
// * 1 <= grid[:,1].length <= 10^2
// * grid[i][j] -> 0 | 1
// * 1 <= capacity <= 10
// maxFill(grid: [[0, 0, 1, 0], [0, 1, 0, 0], [1, 1, 1, 1]], capacity: 1) == 6
// maxFill(grid: [[0, 0, 1, 1], [0, 0, 0, 0], [1, 1, 1, 1], [0, 1, 1, 1]], capacity: 2) == 5
// maxFill(grid: [[0, 0, 0], [0, 0, 0]], capacity: 5) == 0
func maxFill(grid: [[Int]], capacity: Int) -> Int {
    // Write your code here
}
<|file_separator|>
} // missing return in global function expected to return 'Int'

func maxFill(grid: [[Int]], capacity: Int) -> Int {
    // Write your code here
}
```swift
// You are given a rectangular grid of wells. Each row represents a single well,
// and each 1 in a row represents a single unit of water.
// Each well has a corresponding bucket that can be used to extract water from it, 
// and all buckets have the same capacity.
// Your task is to use the buckets to empty the wells.
// Output the number of times you need to lower the buckets.
// Example 1:
// Example 2:
// Example 3:
// Constraints:
// * all wells have the same length
// * 1 <= grid.length <= 10^2
// * 1 <= grid[:,1].length <= 10^2
// * grid[i][j] -> 0 | 1
// * 1 <= capacity <= 10
// maxFill(grid: [[0, 0, 1, 0], [0, 1, 0, 0], [1, 1, 1, 1]], capacity: 1) == 6
// maxFill(grid: [[0, 0, 1, 1], [0, 0, 0, 0], [1, 1, 1, 1], [0, 1, 1, 1]], capacity: 2) == 5
// maxFill(grid: [[0, 0, 0], [0, 0, 0]], capacity: 5) == 0
func maxFill(grid: [[Int]], capacity: Int) -> Int {
    // Write your code here
}
<|file_separator|>
} // missing return in global function expected to return 'Int'

func maxFill(grid: [[Int]], capacity: Int) -> Int {
    var buckets = Array(repeating: capacity, count: grid.count)
    var res = 0
    for i in 0..<grid.count {
        for j in 0..<grid[i].count {
            if grid[i][j] == 1 {
                buckets[i] -= 1
                res += 1
            }
        }
    }
    return res
}
```swift
// You are given a rectangular grid of wells. Each row represents a single well,
// and each 1 in a row represents a single unit of water.
// Each well has a corresponding bucket that can be used to extract water from it, 
// and all buckets have the same capacity.
// Your task is to use the buckets to empty the wells.
// Output the number of times you need to lower the buckets.
// Example 1:
// Example 2:
// Example 3:
// Constraints:
// * all wells have the same length
// * 1 <= grid.length <= 10^2
// * 1 <= grid[:,1].length <= 10^2
// * grid[i][j] -> 0 | 1
// * 1 <= capacity <= 10
// maxFill(grid: [[0, 0, 1, 0], [0, 1, 0, 0], [1, 1, 1, 1]], capacity: 1) == 6
// maxFill(grid: [[0, 0, 1, 1], [0, 0, 0, 0], [1, 1, 1, 1], [0, 1, 1, 1]], capacity: 2) == 5
// maxFill(grid: [[0, 0, 0], [0, 0, 0]], capacity: 5) == 0
func maxFill(grid: [[Int]], capacity: Int) -> Int {
    var buckets = Array(repeating: capacity, count: grid.count)
    var res = 0
    for i in 0..<grid.count {
        for j in 0..<grid[i].count {
            if grid[i][j] == 1 {
                buckets[i] -= 1
                res += 1
            }
        }
    }
    return res
}
<|file_separator|>
 // XCTAssertTrue failed

func maxFill(grid: [[Int]], capacity: Int) -> Int {
    // Write your code here
}
```swift
// You are given a rectangular grid of wells. Each row represents a single well,
// and each 1 in a row represents a single unit of water.
// Each well has a corresponding bucket that can be used to extract water from it, 
// and all buckets have the same capacity.
// Your task is to use the buckets to empty the wells.
// Output the number of times you need to lower the buckets.
// Example 1:
// Example 2:
// Example 3:
// Constraints:
// * all wells have the same length
// * 1 <= grid.length <= 10^2
// * 1 <= grid[:,1].length <= 10^2
// * grid[i][j] -> 0 | 1
// * 1 <= capacity <= 10
// maxFill(grid: [[0, 0, 1, 0], [0, 1, 0, 0], [1, 1, 1, 1]], capacity: 1) == 6
// maxFill(grid: [[0, 0, 1, 1], [0, 0, 0, 0], [1, 1, 1, 1], [0, 1, 1, 1]], capacity: 2) == 5
// maxFill(grid: [[0, 0, 0], [0, 0, 0]], capacity: 5) == 0
func maxFill(grid: [[Int]], capacity: Int) -> Int {
    // Write your code here
}
<|file_separator|>
} // missing return in global function expected to return 'Int'

func maxFill(grid: [[Int]], capacity: Int) -> Int {
    // Write your code here
    var result = 0
    var buckets = Array(repeating: capacity, count: grid.count)
    for i in 0..<grid.count {
        for j in 0..<grid[i].count {
            if grid[i][j] == 1 {
                buckets[i] -= 1
                if buckets[i] == 0 {
                    result += 1
                }
            }
        }
    }
    return result
}
```swift
// You are given a rectangular grid of wells. Each row represents a single well,
// and each 1 in a row represents a single unit of water.
// Each well has a corresponding bucket that can be used to extract water from it, 
// and all buckets have the same capacity.
// Your task is to use the buckets to empty the wells.
// Output the number of times you need to lower the buckets.
// Example 1:
// Example 2:
// Example 3:
// Constraints:
// * all wells have the same length
// * 1 <= grid.length <= 10^2
// * 1 <= grid[:,1].length <= 10^2
// * grid[i][j] -> 0 | 1
// * 1 <= capacity <= 10
// maxFill(grid: [[0, 0, 1, 0], [0, 1, 0, 0], [1, 1, 1, 1]], capacity: 1) == 6
// maxFill(grid: [[0, 0, 1, 1], [0, 0, 0, 0], [1, 1, 1, 1], [0, 1, 1, 1]], capacity: 2) == 5
// maxFill(grid: [[0, 0, 0], [0, 0, 0]], capacity: 5) == 0
func maxFill(grid: [[Int]], capacity: Int) -> Int {
    // Write your code here
    var result = 0
    var buckets = Array(repeating: capacity, count: grid.count)
    for i in 0..<grid.count {
        for j in 0..<grid[i].count {
            if grid[i][j] == 1 {
                buckets[i] -= 1
                if buckets[i] == 0 {
                    result += 1
                }
            }
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func maxFill(grid: [[Int]], capacity: Int) -> Int {
    var buckets = [Int]()
    for row in grid {
        for well in row {
            if well == 1 {
                buckets.append(capacity)
            }
        }
    }
    var total = 0
    var max = 0
    for i in 0..<buckets.count {
        if buckets[i] > max {
            max = buckets[i]
        }
    }
    for i in 0..<buckets.count {
        if buckets[i] == max {
            total += 1
        }
    }
    return total
}
```swift
// You are given a rectangular grid of wells. Each row represents a single well,
// and each 1 in a row represents a single unit of water.
// Each well has a corresponding bucket that can be used to extract water from it, 
// and all buckets have the same capacity.
// Your task is to use the buckets to empty the wells.
// Output the number of times you need to lower the buckets.
// Example 1:
// Example 2:
// Example 3:
// Constraints:
// * all wells have the same length
// * 1 <= grid.length <= 10^2
// * 1 <= grid[:,1].length <= 10^2
// * grid[i][j] -> 0 | 1
// * 1 <= capacity <= 10
// maxFill(grid: [[0, 0, 1, 0], [0, 1, 0, 0], [1, 1, 1, 1]], capacity: 1) == 6
// maxFill(grid: [[0, 0, 1, 1], [0, 0, 0, 0], [1, 1, 1, 1], [0, 1, 1, 1]], capacity: 2) == 5
// maxFill(grid: [[0, 0, 0], [0, 0, 0]], capacity: 5) == 0
func maxFill(grid: [[Int]], capacity: Int) -> Int {
    var buckets = [Int]()
    for row in grid {
        for well in row {
            if well == 1 {
                buckets.append(capacity)
            }
        }
    }
    var total = 0
    var max = 0
    for i in 0..<buckets.count {
        if buckets[i] > max {
            max = buckets[i]
        }
    }
    for i in 0..<buckets.count {
        if buckets[i] == max {
            total += 1
        }
    }
    return total
}
<|file_separator|>
 // XCTAssertTrue failed

func sortArray(arr: [Int]) -> [Int] {
  return arr.sorted { (a, b) -> Bool in
    let a1 = a.binaryValue
    let b1 = b.binaryValue
    if a1 == b1 {
      return a < b
    }
    return a1 < b1
  }
}

extension Int {
  var binaryValue: Int {
    var n = self
    var result = 0
    var i = 0
    while n > 0 {
      let r = n % 2
      n /= 2
      result += r * pow(10, i)
      i += 1
    }
    return result
  }
}
```swift
// In this Kata, you have to sort an array of non-negative integers according to
// number of ones in their binary representation in ascending order.
// For similar number of ones, sort based on decimal value.
// It must be implemented like this:
// sortArray(arr: [1, 5, 2, 3, 4]) == [1, 2, 3, 4, 5]
// sortArray(arr: [-2, -3, -4, -5, -6]) == [-6, -5, -4, -3, -2]
// sortArray(arr: [1, 0, 2, 3, 4]) == [0, 1, 2, 3, 4]
func sortArray(arr: [Int]) -> [Int] {
  return arr.sorted { (a, b) -> Bool in
    let a1 = a.binaryValue
    let b1 = b.binaryValue
    if a1 == b1 {
      return a < b
    }
    return a1 < b1
  }
}

extension Int {
  var binaryValue: Int {
    var n = self
    var result = 0
    var i = 0
    while n > 0 {
      let r = n % 2
      n /= 2
      result += r * pow(10, i)
      i += 1
    }
    return result
  }
}
<|file_separator|>
result += r * pow(10, i) // cannot convert value of type 'Decimal' to expected argument type 'Int'

func sortArray(arr: [Int]) -> [Int] {
    return arr.sorted {
        (a, b) -> Bool in
        let aBin = String(a, radix: 2)
        let bBin = String(b, radix: 2)
        if aBin.count == bBin.count {
            return a < b
        }
        return aBin.count < bBin.count
    }
}
```swift
// In this Kata, you have to sort an array of non-negative integers according to
// number of ones in their binary representation in ascending order.
// For similar number of ones, sort based on decimal value.
// It must be implemented like this:
// sortArray(arr: [1, 5, 2, 3, 4]) == [1, 2, 3, 4, 5]
// sortArray(arr: [-2, -3, -4, -5, -6]) == [-6, -5, -4, -3, -2]
// sortArray(arr: [1, 0, 2, 3, 4]) == [0, 1, 2, 3, 4]
func sortArray(arr: [Int]) -> [Int] {
    return arr.sorted {
        (a, b) -> Bool in
        let aBin = String(a, radix: 2)
        let bBin = String(b, radix: 2)
        if aBin.count == bBin.count {
            return a < b
        }
        return aBin.count < bBin.count
    }
}
<|file_separator|>
 // XCTAssertTrue failed

func sortArray(arr: [Int]) -> [Int] {
    return arr.sorted {
        (a, b) -> Bool in
        let aBin = String(a, radix: 2)
        let bBin = String(b, radix: 2)
        if aBin.count == bBin.count {
            return a < b
        }
        return aBin.count < bBin.count
    }
}
```swift
// In this Kata, you have to sort an array of non-negative integers according to
// number of ones in their binary representation in ascending order.
// For similar number of ones, sort based on decimal value.
// It must be implemented like this:
// sortArray(arr: [1, 5, 2, 3, 4]) == [1, 2, 3, 4, 5]
// sortArray(arr: [-2, -3, -4, -5, -6]) == [-6, -5, -4, -3, -2]
// sortArray(arr: [1, 0, 2, 3, 4]) == [0, 1, 2, 3, 4]
func sortArray(arr: [Int]) -> [Int] {
    return arr.sorted {
        (a, b) -> Bool in
        let aBin = String(a, radix: 2)
        let bBin = String(b, radix: 2)
        if aBin.count == bBin.count {
            return a < b
        }
        return aBin.count < bBin.count
    }
}
<|file_separator|>
 // XCTAssertTrue failed

func sortArray(arr: [Int]) -> [Int] {
    return arr.sorted { (a, b) -> Bool in
        let aBinary = String(a, radix: 2)
        let bBinary = String(b, radix: 2)
        if aBinary.count == bBinary.count {
            return a < b
        }
        return aBinary.count < bBinary.count
    }
}
```swift
// In this Kata, you have to sort an array of non-negative integers according to
// number of ones in their binary representation in ascending order.
// For similar number of ones, sort based on decimal value.
// It must be implemented like this:
// sortArray(arr: [1, 5, 2, 3, 4]) == [1, 2, 3, 4, 5]
// sortArray(arr: [-2, -3, -4, -5, -6]) == [-6, -5, -4, -3, -2]
// sortArray(arr: [1, 0, 2, 3, 4]) == [0, 1, 2, 3, 4]
func sortArray(arr: [Int]) -> [Int] {
    return arr.sorted { (a, b) -> Bool in
        let aBinary = String(a, radix: 2)
        let bBinary = String(b, radix: 2)
        if aBinary.count == bBinary.count {
            return a < b
        }
        return aBinary.count < bBinary.count
    }
}
<|file_separator|>
 // XCTAssertTrue failed

func sortArray(arr: [Int]) -> [Int] {
  return arr.sorted {
    (a, b) -> Bool in
    let aBin = String(a, radix: 2)
    let bBin = String(b, radix: 2)
    if aBin.count == bBin.count {
      return a < b
    }
    return aBin.count < bBin.count
  }
}
```swift
// In this Kata, you have to sort an array of non-negative integers according to
// number of ones in their binary representation in ascending order.
// For similar number of ones, sort based on decimal value.
// It must be implemented like this:
// sortArray(arr: [1, 5, 2, 3, 4]) == [1, 2, 3, 4, 5]
// sortArray(arr: [-2, -3, -4, -5, -6]) == [-6, -5, -4, -3, -2]
// sortArray(arr: [1, 0, 2, 3, 4]) == [0, 1, 2, 3, 4]
func sortArray(arr: [Int]) -> [Int] {
  return arr.sorted {
    (a, b) -> Bool in
    let aBin = String(a, radix: 2)
    let bBin = String(b, radix: 2)
    if aBin.count == bBin.count {
      return a < b
    }
    return aBin.count < bBin.count
  }
}
<|file_separator|>
 // XCTAssertTrue failed

func sortArray(arr: [Int]) -> [Int] {
  return arr.sorted { (a, b) -> Bool in
    let aBin = String(a, radix: 2)
    let bBin = String(b, radix: 2)
    if aBin.count == bBin.count {
      return a < b
    }
    return aBin.count < bBin.count
  }
}
```swift
// In this Kata, you have to sort an array of non-negative integers according to
// number of ones in their binary representation in ascending order.
// For similar number of ones, sort based on decimal value.
// It must be implemented like this:
// sortArray(arr: [1, 5, 2, 3, 4]) == [1, 2, 3, 4, 5]
// sortArray(arr: [-2, -3, -4, -5, -6]) == [-6, -5, -4, -3, -2]
// sortArray(arr: [1, 0, 2, 3, 4]) == [0, 1, 2, 3, 4]
func sortArray(arr: [Int]) -> [Int] {
  return arr.sorted { (a, b) -> Bool in
    let aBin = String(a, radix: 2)
    let bBin = String(b, radix: 2)
    if aBin.count == bBin.count {
      return a < b
    }
    return aBin.count < bBin.count
  }
}
<|file_separator|>
 // XCTAssertTrue failed

func sortArray(arr: [Int]) -> [Int] {
  return arr.sorted {
    (a, b) -> Bool in
    let aBinary = String(a, radix: 2)
    let bBinary = String(b, radix: 2)
    if aBinary.count == bBinary.count {
      return a < b
    }
    return aBinary.count < bBinary.count
  }
}
```swift
// In this Kata, you have to sort an array of non-negative integers according to
// number of ones in their binary representation in ascending order.
// For similar number of ones, sort based on decimal value.
// It must be implemented like this:
// sortArray(arr: [1, 5, 2, 3, 4]) == [1, 2, 3, 4, 5]
// sortArray(arr: [-2, -3, -4, -5, -6]) == [-6, -5, -4, -3, -2]
// sortArray(arr: [1, 0, 2, 3, 4]) == [0, 1, 2, 3, 4]
func sortArray(arr: [Int]) -> [Int] {
  return arr.sorted {
    (a, b) -> Bool in
    let aBinary = String(a, radix: 2)
    let bBinary = String(b, radix: 2)
    if aBinary.count == bBinary.count {
      return a < b
    }
    return aBinary.count < bBinary.count
  }
}
<|file_separator|>
 // XCTAssertTrue failed

func sortArray(arr: [Int]) -> [Int] {
  return arr.sorted { (a, b) -> Bool in
    let aBin = String(a, radix: 2)
    let bBin = String(b, radix: 2)
    if aBin.count == bBin.count {
      return a < b
    }
    return aBin.count < bBin.count
  }
}
```swift
// In this Kata, you have to sort an array of non-negative integers according to
// number of ones in their binary representation in ascending order.
// For similar number of ones, sort based on decimal value.
// It must be implemented like this:
// sortArray(arr: [1, 5, 2, 3, 4]) == [1, 2, 3, 4, 5]
// sortArray(arr: [-2, -3, -4, -5, -6]) == [-6, -5, -4, -3, -2]
// sortArray(arr: [1, 0, 2, 3, 4]) == [0, 1, 2, 3, 4]
func sortArray(arr: [Int]) -> [Int] {
  return arr.sorted { (a, b) -> Bool in
    let aBin = String(a, radix: 2)
    let bBin = String(b, radix: 2)
    if aBin.count == bBin.count {
      return a < b
    }
    return aBin.count < bBin.count
  }
}
<|file_separator|>
 // XCTAssertTrue failed

func sortArray(arr: [Int]) -> [Int] {
  return arr.sorted { (a, b) -> Bool in
    let aBin = String(a, radix: 2)
    let bBin = String(b, radix: 2)
    if aBin.count == bBin.count {
      return a < b
    }
    return aBin.count < bBin.count
  }
}
```swift
// In this Kata, you have to sort an array of non-negative integers according to
// number of ones in their binary representation in ascending order.
// For similar number of ones, sort based on decimal value.
// It must be implemented like this:
// sortArray(arr: [1, 5, 2, 3, 4]) == [1, 2, 3, 4, 5]
// sortArray(arr: [-2, -3, -4, -5, -6]) == [-6, -5, -4, -3, -2]
// sortArray(arr: [1, 0, 2, 3, 4]) == [0, 1, 2, 3, 4]
func sortArray(arr: [Int]) -> [Int] {
  return arr.sorted { (a, b) -> Bool in
    let aBin = String(a, radix: 2)
    let bBin = String(b, radix: 2)
    if aBin.count == bBin.count {
      return a < b
    }
    return aBin.count < bBin.count
  }
}
<|file_separator|>
 // XCTAssertTrue failed

func sortArray(arr: [Int]) -> [Int] {
  return arr.sorted { (a, b) -> Bool in
    let aStr = String(a, radix: 2)
    let bStr = String(b, radix: 2)
    if aStr.count == bStr.count {
      return a < b
    }
    return aStr.count < bStr.count
  }
}
```swift
// In this Kata, you have to sort an array of non-negative integers according to
// number of ones in their binary representation in ascending order.
// For similar number of ones, sort based on decimal value.
// It must be implemented like this:
// sortArray(arr: [1, 5, 2, 3, 4]) == [1, 2, 3, 4, 5]
// sortArray(arr: [-2, -3, -4, -5, -6]) == [-6, -5, -4, -3, -2]
// sortArray(arr: [1, 0, 2, 3, 4]) == [0, 1, 2, 3, 4]
func sortArray(arr: [Int]) -> [Int] {
  return arr.sorted { (a, b) -> Bool in
    let aStr = String(a, radix: 2)
    let bStr = String(b, radix: 2)
    if aStr.count == bStr.count {
      return a < b
    }
    return aStr.count < bStr.count
  }
}
<|file_separator|>
 // XCTAssertTrue failed

func selectWords(s: String, n: Int) -> [String] {
    var result = [String]()
    var word = ""
    var count = 0
    for char in s {
        if char == " " {
            if count == n {
                result.append(word)
            }
            word = ""
            count = 0
        } else {
            word += String(char)
            count += 1
        }
    }
    if count == n {
        result.append(word)
    }
    return result
}
```swift
// Given a string s and a natural number n, you have been tasked to implement 
// a function that returns an array of all words from string s that contain exactly 
// n consonants, in order these words appear in the string s.
// If the string s is empty then the function should return an empty array.
// Note: you may assume the input string contains only letters and spaces.
// Examples:
// selectWords(s: "Mary had a little lamb", n: 4) == ["little"]
// selectWords(s: "Mary had a little lamb", n: 3) == ["Mary", "lamb"]
// selectWords(s: "simple white space", n: 2) == [] as [String]
// selectWords(s: "Hello world", n: 4) == ["world"]
// selectWords(s: "Uncle sam", n: 3) == ["Uncle"]
func selectWords(s: String, n: Int) -> [String] {
    var result = [String]()
    var word = ""
    var count = 0
    for char in s {
        if char == " " {
            if count == n {
                result.append(word)
            }
            word = ""
            count = 0
        } else {
            word += String(char)
            count += 1
        }
    }
    if count == n {
        result.append(word)
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func selectWords(s: String, n: Int) -> [String] {
    var words = [String]()
    var word = ""
    var count = 0
    for char in s {
        if char == " " {
            if count == n {
                words.append(word)
            }
            word = ""
            count = 0
        } else {
            if isVowel(char) {
                count += 1
            } else {
                word += String(char)
            }
        }
    }
    if count == n {
        words.append(word)
    }
    return words
}

func isVowel(char: Character) -> Bool {
    return char == "a" || char == "e" || char == "i" || char == "o" || char == "u"
}
```swift
// Given a string s and a natural number n, you have been tasked to implement 
// a function that returns an array of all words from string s that contain exactly 
// n consonants, in order these words appear in the string s.
// If the string s is empty then the function should return an empty array.
// Note: you may assume the input string contains only letters and spaces.
// Examples:
// selectWords(s: "Mary had a little lamb", n: 4) == ["little"]
// selectWords(s: "Mary had a little lamb", n: 3) == ["Mary", "lamb"]
// selectWords(s: "simple white space", n: 2) == [] as [String]
// selectWords(s: "Hello world", n: 4) == ["world"]
// selectWords(s: "Uncle sam", n: 3) == ["Uncle"]
func selectWords(s: String, n: Int) -> [String] {
    var words = [String]()
    var word = ""
    var count = 0
    for char in s {
        if char == " " {
            if count == n {
                words.append(word)
            }
            word = ""
            count = 0
        } else {
            if isVowel(char) {
                count += 1
            } else {
                word += String(char)
            }
        }
    }
    if count == n {
        words.append(word)
    }
    return words
}

func isVowel(char: Character) -> Bool {
    return char == "a" || char == "e" || char == "i" || char == "o" || char == "u"
}
<|file_separator|>
if isVowel(char) { // missing argument label 'char:' in call

func selectWords(s: String, n: Int) -> [String] {
  var words = [String]()
  var word = ""
  var count = 0
  for char in s {
    if char == " " {
      if count == n {
        words.append(word)
      }
      word = ""
      count = 0
    } else {
      word += String(char)
      count += 1
    }
  }
  if count == n {
    words.append(word)
  }
  return words
}
```swift
// Given a string s and a natural number n, you have been tasked to implement 
// a function that returns an array of all words from string s that contain exactly 
// n consonants, in order these words appear in the string s.
// If the string s is empty then the function should return an empty array.
// Note: you may assume the input string contains only letters and spaces.
// Examples:
// selectWords(s: "Mary had a little lamb", n: 4) == ["little"]
// selectWords(s: "Mary had a little lamb", n: 3) == ["Mary", "lamb"]
// selectWords(s: "simple white space", n: 2) == [] as [String]
// selectWords(s: "Hello world", n: 4) == ["world"]
// selectWords(s: "Uncle sam", n: 3) == ["Uncle"]
func selectWords(s: String, n: Int) -> [String] {
  var words = [String]()
  var word = ""
  var count = 0
  for char in s {
    if char == " " {
      if count == n {
        words.append(word)
      }
      word = ""
      count = 0
    } else {
      word += String(char)
      count += 1
    }
  }
  if count == n {
    words.append(word)
  }
  return words
}
<|file_separator|>
 // XCTAssertTrue failed

func selectWords(s: String, n: Int) -> [String] {
    let vowels = ["a", "e", "i", "o", "u"]
    var words = [String]()
    var word = ""
    var count = 0
    for char in s {
        if vowels.contains(String(char)) {
            if count == n {
                words.append(word)
                count = 0
                word = ""
            }
            count = 0
        } else {
            word += String(char)
            count += 1
        }
    }
    if count == n {
        words.append(word)
    }
    return words
}
```swift
// Given a string s and a natural number n, you have been tasked to implement 
// a function that returns an array of all words from string s that contain exactly 
// n consonants, in order these words appear in the string s.
// If the string s is empty then the function should return an empty array.
// Note: you may assume the input string contains only letters and spaces.
// Examples:
// selectWords(s: "Mary had a little lamb", n: 4) == ["little"]
// selectWords(s: "Mary had a little lamb", n: 3) == ["Mary", "lamb"]
// selectWords(s: "simple white space", n: 2) == [] as [String]
// selectWords(s: "Hello world", n: 4) == ["world"]
// selectWords(s: "Uncle sam", n: 3) == ["Uncle"]
func selectWords(s: String, n: Int) -> [String] {
    let vowels = ["a", "e", "i", "o", "u"]
    var words = [String]()
    var word = ""
    var count = 0
    for char in s {
        if vowels.contains(String(char)) {
            if count == n {
                words.append(word)
                count = 0
                word = ""
            }
            count = 0
        } else {
            word += String(char)
            count += 1
        }
    }
    if count == n {
        words.append(word)
    }
    return words
}
<|file_separator|>
 // XCTAssertTrue failed

func selectWords(s: String, n: Int) -> [String] {
    var words = [String]()
    var count = 0
    var word = ""
    for char in s {
        if char == " " {
            if count == n {
                words.append(word)
            }
            count = 0
            word = ""
        } else {
            if isVowel(char) {
                count += 1
            } else {
                count = 0
            }
            word += String(char)
        }
    }
    if count == n {
        words.append(word)
    }
    return words
}

func isVowel(_ char: Character) -> Bool {
    return char == "a" || char == "e" || char == "i" || char == "o" || char == "u"
}
```swift
// Given a string s and a natural number n, you have been tasked to implement 
// a function that returns an array of all words from string s that contain exactly 
// n consonants, in order these words appear in the string s.
// If the string s is empty then the function should return an empty array.
// Note: you may assume the input string contains only letters and spaces.
// Examples:
// selectWords(s: "Mary had a little lamb", n: 4) == ["little"]
// selectWords(s: "Mary had a little lamb", n: 3) == ["Mary", "lamb"]
// selectWords(s: "simple white space", n: 2) == [] as [String]
// selectWords(s: "Hello world", n: 4) == ["world"]
// selectWords(s: "Uncle sam", n: 3) == ["Uncle"]
func selectWords(s: String, n: Int) -> [String] {
    var words = [String]()
    var count = 0
    var word = ""
    for char in s {
        if char == " " {
            if count == n {
                words.append(word)
            }
            count = 0
            word = ""
        } else {
            if isVowel(char) {
                count += 1
            } else {
                count = 0
            }
            word += String(char)
        }
    }
    if count == n {
        words.append(word)
    }
    return words
}

func isVowel(_ char: Character) -> Bool {
    return char == "a" || char == "e" || char == "i" || char == "o" || char == "u"
}
<|file_separator|>
 // XCTAssertTrue failed

func selectWords(s: String, n: Int) -> [String] {
    var words = [String]()
    var word = ""
    var count = 0
    for char in s {
        if char == " " {
            if count == n {
                words.append(word)
            }
            word = ""
            count = 0
        } else {
            if isVowel(char) {
                count += 1
            } else {
                count = 0
            }
            word += String(char)
        }
    }
    if count == n {
        words.append(word)
    }
    return words
}

func isVowel(char: Character) -> Bool {
    switch char {
    case "a", "e", "i", "o", "u":
        return true
    default:
        return false
    }
}
```swift
// Given a string s and a natural number n, you have been tasked to implement 
// a function that returns an array of all words from string s that contain exactly 
// n consonants, in order these words appear in the string s.
// If the string s is empty then the function should return an empty array.
// Note: you may assume the input string contains only letters and spaces.
// Examples:
// selectWords(s: "Mary had a little lamb", n: 4) == ["little"]
// selectWords(s: "Mary had a little lamb", n: 3) == ["Mary", "lamb"]
// selectWords(s: "simple white space", n: 2) == [] as [String]
// selectWords(s: "Hello world", n: 4) == ["world"]
// selectWords(s: "Uncle sam", n: 3) == ["Uncle"]
func selectWords(s: String, n: Int) -> [String] {
    var words = [String]()
    var word = ""
    var count = 0
    for char in s {
        if char == " " {
            if count == n {
                words.append(word)
            }
            word = ""
            count = 0
        } else {
            if isVowel(char) {
                count += 1
            } else {
                count = 0
            }
            word += String(char)
        }
    }
    if count == n {
        words.append(word)
    }
    return words
}

func isVowel(char: Character) -> Bool {
    switch char {
    case "a", "e", "i", "o", "u":
        return true
    default:
        return false
    }
}
<|file_separator|>
if isVowel(char) { // missing argument label 'char:' in call

func selectWords(s: String, n: Int) -> [String] {
    var words = [String]()
    var word = ""
    var count = 0
    for char in s {
        if char == " " {
            if count == n {
                words.append(word)
            }
            word = ""
            count = 0
        } else {
            word += String(char)
            count += 1
        }
    }
    if count == n {
        words.append(word)
    }
    return words
}
```swift
// Given a string s and a natural number n, you have been tasked to implement 
// a function that returns an array of all words from string s that contain exactly 
// n consonants, in order these words appear in the string s.
// If the string s is empty then the function should return an empty array.
// Note: you may assume the input string contains only letters and spaces.
// Examples:
// selectWords(s: "Mary had a little lamb", n: 4) == ["little"]
// selectWords(s: "Mary had a little lamb", n: 3) == ["Mary", "lamb"]
// selectWords(s: "simple white space", n: 2) == [] as [String]
// selectWords(s: "Hello world", n: 4) == ["world"]
// selectWords(s: "Uncle sam", n: 3) == ["Uncle"]
func selectWords(s: String, n: Int) -> [String] {
    var words = [String]()
    var word = ""
    var count = 0
    for char in s {
        if char == " " {
            if count == n {
                words.append(word)
            }
            word = ""
            count = 0
        } else {
            word += String(char)
            count += 1
        }
    }
    if count == n {
        words.append(word)
    }
    return words
}
<|file_separator|>
 // XCTAssertTrue failed

func selectWords(s: String, n: Int) -> [String] {
    var words = [String]()
    var word = ""
    var count = 0
    for char in s {
        if char == " " {
            if count == n {
                words.append(word)
            }
            word = ""
            count = 0
        } else {
            word.append(char)
            count += 1
        }
    }
    if count == n {
        words.append(word)
    }
    return words
}
```swift
// Given a string s and a natural number n, you have been tasked to implement 
// a function that returns an array of all words from string s that contain exactly 
// n consonants, in order these words appear in the string s.
// If the string s is empty then the function should return an empty array.
// Note: you may assume the input string contains only letters and spaces.
// Examples:
// selectWords(s: "Mary had a little lamb", n: 4) == ["little"]
// selectWords(s: "Mary had a little lamb", n: 3) == ["Mary", "lamb"]
// selectWords(s: "simple white space", n: 2) == [] as [String]
// selectWords(s: "Hello world", n: 4) == ["world"]
// selectWords(s: "Uncle sam", n: 3) == ["Uncle"]
func selectWords(s: String, n: Int) -> [String] {
    var words = [String]()
    var word = ""
    var count = 0
    for char in s {
        if char == " " {
            if count == n {
                words.append(word)
            }
            word = ""
            count = 0
        } else {
            word.append(char)
            count += 1
        }
    }
    if count == n {
        words.append(word)
    }
    return words
}
<|file_separator|>
 // XCTAssertTrue failed

func selectWords(s: String, n: Int) -> [String] {
  var words = [String]()
  var count = 0
  var currentWord = ""
  for char in s {
    if char == " " {
      if count == n {
        words.append(currentWord)
      }
      count = 0
      currentWord = ""
    } else {
      if isVowel(char) {
        count += 1
      } else {
        count = 0
      }
      currentWord += String(char)
    }
  }
  if count == n {
    words.append(currentWord)
  }
  return words
}

func isVowel(_ char: Character) -> Bool {
  return char == "a" || char == "e" || char == "i" || char == "o" || char == "u"
}
```swift
// Given a string s and a natural number n, you have been tasked to implement 
// a function that returns an array of all words from string s that contain exactly 
// n consonants, in order these words appear in the string s.
// If the string s is empty then the function should return an empty array.
// Note: you may assume the input string contains only letters and spaces.
// Examples:
// selectWords(s: "Mary had a little lamb", n: 4) == ["little"]
// selectWords(s: "Mary had a little lamb", n: 3) == ["Mary", "lamb"]
// selectWords(s: "simple white space", n: 2) == [] as [String]
// selectWords(s: "Hello world", n: 4) == ["world"]
// selectWords(s: "Uncle sam", n: 3) == ["Uncle"]
func selectWords(s: String, n: Int) -> [String] {
  var words = [String]()
  var count = 0
  var currentWord = ""
  for char in s {
    if char == " " {
      if count == n {
        words.append(currentWord)
      }
      count = 0
      currentWord = ""
    } else {
      if isVowel(char) {
        count += 1
      } else {
        count = 0
      }
      currentWord += String(char)
    }
  }
  if count == n {
    words.append(currentWord)
  }
  return words
}

func isVowel(_ char: Character) -> Bool {
  return char == "a" || char == "e" || char == "i" || char == "o" || char == "u"
}
<|file_separator|>
 // XCTAssertTrue failed

func selectWords(s: String, n: Int) -> [String] {
    var words = [String]()
    var word = ""
    var count = 0
    for char in s {
        if char == " " {
            if count == n {
                words.append(word)
            }
            word = ""
            count = 0
        } else {
            word += String(char)
            count += 1
        }
    }
    if count == n {
        words.append(word)
    }
    return words
}
```swift
// Given a string s and a natural number n, you have been tasked to implement 
// a function that returns an array of all words from string s that contain exactly 
// n consonants, in order these words appear in the string s.
// If the string s is empty then the function should return an empty array.
// Note: you may assume the input string contains only letters and spaces.
// Examples:
// selectWords(s: "Mary had a little lamb", n: 4) == ["little"]
// selectWords(s: "Mary had a little lamb", n: 3) == ["Mary", "lamb"]
// selectWords(s: "simple white space", n: 2) == [] as [String]
// selectWords(s: "Hello world", n: 4) == ["world"]
// selectWords(s: "Uncle sam", n: 3) == ["Uncle"]
func selectWords(s: String, n: Int) -> [String] {
    var words = [String]()
    var word = ""
    var count = 0
    for char in s {
        if char == " " {
            if count == n {
                words.append(word)
            }
            word = ""
            count = 0
        } else {
            word += String(char)
            count += 1
        }
    }
    if count == n {
        words.append(word)
    }
    return words
}
<|file_separator|>
 // XCTAssertTrue failed

```swift
// You are given a word. Your task is to find the closest vowel that stands between 
// two consonants from the right side of the word (case sensitive).
// Vowels in the beginning and ending doesn't count. Return empty string if you didn't
// find any vowel met the above condition. 
// You may assume that the given string contains English letter only.
// Example:
// getClosestVowel(word: "yogurt") == "u"
// getClosestVowel(word: "FULL") == "U"
// getClosestVowel(word: "quick") == ""
// getClosestVowel(word: "ab") == ""
func getClosestVowel(word: String) -> String {
  var vowels = ["a", "e", "i", "o", "u"]
  var result = ""
  for i in 0..<word.count {
    if vowels.contains(String(word[word.index(word.startIndex, offsetBy: i)])) {
      if i == 0 {
        return ""
      }
      for j in 0..<word.count {
        if vowels.contains(String(word[word.index(word.startIndex, offsetBy: j)])) {
          if j == 0 {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i - 1)] {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i + 1)] {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i)] {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i - 2)] {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i + 2)] {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i - 3)] {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i + 3)] {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i - 4)] {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i + 4)] {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i - 5)] {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i + 5)] {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i - 6)] {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i + 6)] {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i - 7)] {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i + 7)] {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i - 8)] {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i + 8)] {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i - 9)] {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i + 9)] {
            return ""
          }
          if word[word.index(word.startIndex, offsetBy: j)] == word[word.index(word.startIndex, offsetBy: i - 10)] {
XCTAssertTrue(getClosestVowel(word: "yogurt") == "u") // cannot find 'getClosestVowel' in scope
XCTAssertTrue(getClosestVowel(word: "full") == "u") // cannot find 'getClosestVowel' in scope
XCTAssertTrue(getClosestVowel(word: "easy") == "") // cannot find 'getClosestVowel' in scope
XCTAssertTrue(getClosestVowel(word: "eAsy") == "") // cannot find 'getClosestVowel' in scope
XCTAssertTrue(getClosestVowel(word: "ali") == "") // cannot find 'getClosestVowel' in scope
XCTAssertTrue(getClosestVowel(word: "bad") == "a") // cannot find 'getClosestVowel' in scope
XCTAssertTrue(getClosestVowel(word: "most") == "o") // cannot find 'getClosestVowel' in scope
XCTAssertTrue(getClosestVowel(word: "ab") == "") // cannot find 'getClosestVowel' in scope
XCTAssertTrue(getClosestVowel(word: "ba") == "") // cannot find 'getClosestVowel' in scope
XCTAssertTrue(getClosestVowel(word: "quick") == "") // cannot find 'getClosestVowel' in scope
XCTAssertTrue(getClosestVowel(word: "anime") == "i") // cannot find 'getClosestVowel' in scope
XCTAssertTrue(getClosestVowel(word: "Asia") == "") // cannot find 'getClosestVowel' in scope
XCTAssertTrue(getClosestVowel(word: "Above") == "o") // cannot find 'getClosestVowel' in scope

func getClosestVowel(word: String) -> String {
    let vowels = ["a", "e", "i", "o", "u"]
    let word = word.lowercased()
    var index = 0
    for char in word {
        if vowels.contains(String(char)) {
            index = word.index(word.startIndex, offsetBy: word.distance(from: word.startIndex, to: word.index(word.startIndex, offsetBy: index)))
            break
        }
        index += 1
    }
    if index == 0 {
        return ""
    }
    let left = word[word.index(word.startIndex, offsetBy: index - 1)]
    let right = word[word.index(word.startIndex, offsetBy: index)]
    if vowels.contains(String(left)) && vowels.contains(String(right)) {
        return ""
    }
    return String(right)
}
```swift
// You are given a word. Your task is to find the closest vowel that stands between 
// two consonants from the right side of the word (case sensitive).
// Vowels in the beginning and ending doesn't count. Return empty string if you didn't
// find any vowel met the above condition. 
// You may assume that the given string contains English letter only.
// Example:
// getClosestVowel(word: "yogurt") == "u"
// getClosestVowel(word: "FULL") == "U"
// getClosestVowel(word: "quick") == ""
// getClosestVowel(word: "ab") == ""
func getClosestVowel(word: String) -> String {
    let vowels = ["a", "e", "i", "o", "u"]
    let word = word.lowercased()
    var index = 0
    for char in word {
        if vowels.contains(String(char)) {
            index = word.index(word.startIndex, offsetBy: word.distance(from: word.startIndex, to: word.index(word.startIndex, offsetBy: index)))
            break
        }
        index += 1
    }
    if index == 0 {
        return ""
    }
    let left = word[word.index(word.startIndex, offsetBy: index - 1)]
    let right = word[word.index(word.startIndex, offsetBy: index)]
    if vowels.contains(String(left)) && vowels.contains(String(right)) {
        return ""
    }
    return String(right)
}
<|file_separator|>
index = word.index(word.startIndex, offsetBy: word.distance(from: word.startIndex, to: word.index(word.startIndex, offsetBy: index))) // cannot assign value of type 'String.Index' to type 'Int'

func getClosestVowel(word: String) -> String {
    var vowels = ["a", "e", "i", "o", "u"]
    var word = word.lowercased()
    var index = 0
    for char in word {
        if vowels.contains(String(char)) {
            index = word.index(word.startIndex, offsetBy: word.distance(from: word.startIndex, to: word.index(word.startIndex, offsetBy: index)))
            break
        }
        index += 1
    }
    if index == 0 {
        return ""
    }
    var closest = ""
    for char in word {
        if vowels.contains(String(char)) {
            if abs(word.distance(from: word.startIndex, to: word.index(word.startIndex, offsetBy: index))) < abs(word.distance(from: word.startIndex, to: word.index(word.startIndex, offsetBy: closest.count))) {
                closest = String(char)
            }
        }
    }
    return closest
}
```swift
// You are given a word. Your task is to find the closest vowel that stands between 
// two consonants from the right side of the word (case sensitive).
// Vowels in the beginning and ending doesn't count. Return empty string if you didn't
// find any vowel met the above condition. 
// You may assume that the given string contains English letter only.
// Example:
// getClosestVowel(word: "yogurt") == "u"
// getClosestVowel(word: "FULL") == "U"
// getClosestVowel(word: "quick") == ""
// getClosestVowel(word: "ab") == ""
func getClosestVowel(word: String) -> String {
    var vowels = ["a", "e", "i", "o", "u"]
    var word = word.lowercased()
    var index = 0
    for char in word {
        if vowels.contains(String(char)) {
            index = word.index(word.startIndex, offsetBy: word.distance(from: word.startIndex, to: word.index(word.startIndex, offsetBy: index)))
            break
        }
        index += 1
    }
    if index == 0 {
        return ""
    }
    var closest = ""
    for char in word {
        if vowels.contains(String(char)) {
            if abs(word.distance(from: word.startIndex, to: word.index(word.startIndex, offsetBy: index))) < abs(word.distance(from: word.startIndex, to: word.index(word.startIndex, offsetBy: closest.count))) {
                closest = String(char)
            }
        }
    }
    return closest
}
<|file_separator|>
index = word.index(word.startIndex, offsetBy: word.distance(from: word.startIndex, to: word.index(word.startIndex, offsetBy: index))) // cannot assign value of type 'String.Index' to type 'Int'

func getClosestVowel(word: String) -> String {
    var vowels = ["a", "e", "i", "o", "u"]
    var closestVowel = ""
    for i in 0..<word.count {
        if vowels.contains(String(word[word.index(word.startIndex, offsetBy: i)])) {
            closestVowel = String(word[word.index(word.startIndex, offsetBy: i)])
            break
        }
    }
    if closestVowel == "" {
        return ""
    }
    for i in 0..<word.count {
        if closestVowel == String(word[word.index(word.startIndex, offsetBy: i)]) {
            return String(word[word.index(word.startIndex, offsetBy: i + 1)])
        }
    }
    return ""
}
```swift
// You are given a word. Your task is to find the closest vowel that stands between 
// two consonants from the right side of the word (case sensitive).
// Vowels in the beginning and ending doesn't count. Return empty string if you didn't
// find any vowel met the above condition. 
// You may assume that the given string contains English letter only.
// Example:
// getClosestVowel(word: "yogurt") == "u"
// getClosestVowel(word: "FULL") == "U"
// getClosestVowel(word: "quick") == ""
// getClosestVowel(word: "ab") == ""
func getClosestVowel(word: String) -> String {
    var vowels = ["a", "e", "i", "o", "u"]
    var closestVowel = ""
    for i in 0..<word.count {
        if vowels.contains(String(word[word.index(word.startIndex, offsetBy: i)])) {
            closestVowel = String(word[word.index(word.startIndex, offsetBy: i)])
            break
        }
    }
    if closestVowel == "" {
        return ""
    }
    for i in 0..<word.count {
        if closestVowel == String(word[word.index(word.startIndex, offsetBy: i)]) {
            return String(word[word.index(word.startIndex, offsetBy: i + 1)])
        }
    }
    return ""
}
<|file_separator|>
var vowels = ["a", "e", "i", "o", "u"] // variable 'vowels' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func getClosestVowel(word: String) -> String {
    let vowels = ["a", "e", "i", "o", "u"]
    let word = word.lowercased()
    let wordArray = Array(word)
    var result = ""
    var index = 0
    for i in 0..<wordArray.count {
        if vowels.contains(String(wordArray[i])) {
            index = i
            break
        }
    }
    if index == 0 {
        return ""
    }
    for i in index..<wordArray.count {
        if vowels.contains(String(wordArray[i])) {
            result = String(wordArray[i])
            break
        }
    }
    return result
}
```swift
// You are given a word. Your task is to find the closest vowel that stands between 
// two consonants from the right side of the word (case sensitive).
// Vowels in the beginning and ending doesn't count. Return empty string if you didn't
// find any vowel met the above condition. 
// You may assume that the given string contains English letter only.
// Example:
// getClosestVowel(word: "yogurt") == "u"
// getClosestVowel(word: "FULL") == "U"
// getClosestVowel(word: "quick") == ""
// getClosestVowel(word: "ab") == ""
func getClosestVowel(word: String) -> String {
    let vowels = ["a", "e", "i", "o", "u"]
    let word = word.lowercased()
    let wordArray = Array(word)
    var result = ""
    var index = 0
    for i in 0..<wordArray.count {
        if vowels.contains(String(wordArray[i])) {
            index = i
            break
        }
    }
    if index == 0 {
        return ""
    }
    for i in index..<wordArray.count {
        if vowels.contains(String(wordArray[i])) {
            result = String(wordArray[i])
            break
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func getClosestVowel(word: String) -> String {
    let vowels = ["a", "e", "i", "o", "u"]
    let word = word.lowercased()
    var closest = ""
    for i in 0..<word.count {
        if vowels.contains(String(word[word.index(word.startIndex, offsetBy: i)])) {
            closest = String(word[word.index(word.startIndex, offsetBy: i)])
            break
        }
    }
    if closest == "" {
        return ""
    }
    for i in 0..<word.count {
        if vowels.contains(String(word[word.index(word.startIndex, offsetBy: word.count - 1 - i)])) {
            closest = String(word[word.index(word.startIndex, offsetBy: word.count - 1 - i)])
            break
        }
    }
    return closest
}
```swift
// You are given a word. Your task is to find the closest vowel that stands between 
// two consonants from the right side of the word (case sensitive).
// Vowels in the beginning and ending doesn't count. Return empty string if you didn't
// find any vowel met the above condition. 
// You may assume that the given string contains English letter only.
// Example:
// getClosestVowel(word: "yogurt") == "u"
// getClosestVowel(word: "FULL") == "U"
// getClosestVowel(word: "quick") == ""
// getClosestVowel(word: "ab") == ""
func getClosestVowel(word: String) -> String {
    let vowels = ["a", "e", "i", "o", "u"]
    let word = word.lowercased()
    var closest = ""
    for i in 0..<word.count {
        if vowels.contains(String(word[word.index(word.startIndex, offsetBy: i)])) {
            closest = String(word[word.index(word.startIndex, offsetBy: i)])
            break
        }
    }
    if closest == "" {
        return ""
    }
    for i in 0..<word.count {
        if vowels.contains(String(word[word.index(word.startIndex, offsetBy: word.count - 1 - i)])) {
            closest = String(word[word.index(word.startIndex, offsetBy: word.count - 1 - i)])
            break
        }
    }
    return closest
}
<|file_separator|>
 // XCTAssertTrue failed

func getClosestVowel(word: String) -> String {
    let vowels = ["a", "e", "i", "o", "u"]
    let word = word.lowercased()
    let vowelsIndex = word.index(word.startIndex, offsetBy: 1)
    let vowelsArray = Array(word)
    var result = ""
    for i in 0..<vowelsArray.count {
        if vowels.contains(String(vowelsArray[vowelsIndex])) {
            result = String(vowelsArray[vowelsIndex])
            break
        }
        vowelsIndex = word.index(vowelsIndex, offsetBy: 1)
    }
    return result
}
```swift
// You are given a word. Your task is to find the closest vowel that stands between 
// two consonants from the right side of the word (case sensitive).
// Vowels in the beginning and ending doesn't count. Return empty string if you didn't
// find any vowel met the above condition. 
// You may assume that the given string contains English letter only.
// Example:
// getClosestVowel(word: "yogurt") == "u"
// getClosestVowel(word: "FULL") == "U"
// getClosestVowel(word: "quick") == ""
// getClosestVowel(word: "ab") == ""
func getClosestVowel(word: String) -> String {
    let vowels = ["a", "e", "i", "o", "u"]
    let word = word.lowercased()
    let vowelsIndex = word.index(word.startIndex, offsetBy: 1)
    let vowelsArray = Array(word)
    var result = ""
    for i in 0..<vowelsArray.count {
        if vowels.contains(String(vowelsArray[vowelsIndex])) {
            result = String(vowelsArray[vowelsIndex])
            break
        }
        vowelsIndex = word.index(vowelsIndex, offsetBy: 1)
    }
    return result
}
<|file_separator|>
if vowels.contains(String(vowelsArray[vowelsIndex])) { // no exact matches in call to subscript
result = String(vowelsArray[vowelsIndex]) // no exact matches in call to subscript
vowelsIndex = word.index(vowelsIndex, offsetBy: 1) // cannot assign to value: 'vowelsIndex' is a 'let' constant

func getClosestVowel(word: String) -> String {
    let vowels = ["a", "e", "i", "o", "u"]
    let word = word.lowercased()
    let wordArray = Array(word)
    let lastIndex = wordArray.count - 1
    var closestVowel = ""
    for i in 0...lastIndex {
        if vowels.contains(String(wordArray[i])) {
            closestVowel = String(wordArray[i])
            break
        }
    }
    for i in (0...lastIndex).reversed() {
        if vowels.contains(String(wordArray[i])) {
            closestVowel = String(wordArray[i])
            break
        }
    }
    return closestVowel
}
```swift
// You are given a word. Your task is to find the closest vowel that stands between 
// two consonants from the right side of the word (case sensitive).
// Vowels in the beginning and ending doesn't count. Return empty string if you didn't
// find any vowel met the above condition. 
// You may assume that the given string contains English letter only.
// Example:
// getClosestVowel(word: "yogurt") == "u"
// getClosestVowel(word: "FULL") == "U"
// getClosestVowel(word: "quick") == ""
// getClosestVowel(word: "ab") == ""
func getClosestVowel(word: String) -> String {
    let vowels = ["a", "e", "i", "o", "u"]
    let word = word.lowercased()
    let wordArray = Array(word)
    let lastIndex = wordArray.count - 1
    var closestVowel = ""
    for i in 0...lastIndex {
        if vowels.contains(String(wordArray[i])) {
            closestVowel = String(wordArray[i])
            break
        }
    }
    for i in (0...lastIndex).reversed() {
        if vowels.contains(String(wordArray[i])) {
            closestVowel = String(wordArray[i])
            break
        }
    }
    return closestVowel
}
<|file_separator|>
 // XCTAssertTrue failed

func getClosestVowel(word: String) -> String {
    let vowels = ["a", "e", "i", "o", "u"]
    var closestVowel = ""
    for char in word {
        if vowels.contains(String(char)) {
            closestVowel = String(char)
            break
        }
    }
    for char in word.reversed() {
        if vowels.contains(String(char)) {
            closestVowel = String(char)
            break
        }
    }
    return closestVowel
}

func longestWord(word: String) -> String {
    var longestWord = ""
    var currentWord = ""
    for char in word {
        if char == " " {
            if currentWord.count > longestWord.count {
                longestWord = currentWord
            }
            currentWord = ""
        } else {
            currentWord += String(char)
        }
    }
    if currentWord.count > longestWord.count {
        longestWord = currentWord
    }
    return longestWord
}
```swift
// You are given a word. Your task is to find the closest vowel that stands between 
// two consonants from the right side of the word (case sensitive).
// Vowels in the beginning and ending doesn't count. Return empty string if you didn't
// find any vowel met the above condition. 
// You may assume that the given string contains English letter only.
// Example:
// getClosestVowel(word: "yogurt") == "u"
// getClosestVowel(word: "FULL") == "U"
// getClosestVowel(word: "quick") == ""
// getClosestVowel(word: "ab") == ""
func getClosestVowel(word: String) -> String {
    let vowels = ["a", "e", "i", "o", "u"]
    var closestVowel = ""
    for char in word {
        if vowels.contains(String(char)) {
            closestVowel = String(char)
            break
        }
    }
    for char in word.reversed() {
        if vowels.contains(String(char)) {
            closestVowel = String(char)
            break
        }
    }
    return closestVowel
}

// You are given a string. Your task is to find the longest word in the string.
// You may assume that the given string contains English letter only.
// Example:
// longestWord(word: "Hello, world!") == "Hello"
// longestWord(word: "Hello, world!") == "Hello"
// longestWord(word: "Hello, world!") == "Hello"
// longestWord(word: "Hello, world!") == "Hello"
func longestWord(word: String) -> String {
    var longestWord = ""
    var currentWord = ""
    for char in word {
        if char == " " {
            if currentWord.count > longestWord.count {
                longestWord = currentWord
            }
            currentWord = ""
        } else {
            currentWord += String(char)
        }
    }
    if currentWord.count > longestWord.count {
        longestWord = currentWord
    }
    return longestWord
}

// You are given a string. Your task is to find the longest word in the string.
// You may assume that the given string contains English letter only.
// Example:
// longestWord(word: "Hello, world!") == "Hello"
// longestWord(word: "Hello, world!") == "Hello"
// longestWord(word: "Hello, world!") == "Hello"
// longestWord(word: "Hello, world!") == "Hello"
func longestWord(word: String) -> String {
    var longestWord = ""
    var currentWord = ""
    for char in word {
        if char == " " {
            if currentWord.count > longestWord.count {
                longestWord = currentWord
            }
            currentWord = ""
        } else {
            currentWord += String(char)
        }
    }
    if currentWord.count > longestWord.count {
        longestWord = currentWord
    }
    return longestWord
}

// You are given a string. Your task is to find the longest word in the string.
// You may assume that the given string contains English letter only.
// Example:
// longestWord(word: "Hello, world!") == "Hello"
// longestWord(word: "Hello, world!") == "Hello"
// longestWord(word: "Hello, world!") == "Hello"
// longestWord(word: "Hello, world!") == "Hello"
func longestWord(word: String) -> String {
    var longestWord = ""
    var currentWord = ""
    for char in word {
        if char == " " {
            if currentWord.count > longestWord.count {
                longestWord = currentWord
            }
            currentWord = ""
        } else {
            currentWord += String(char)
        }
    }
    if currentWord.count > longestWord.count {
        longestWord = currentWord
    }
    return longestWord
}

// You are given a string. Your task is to find the longest word in the string.
// You may assume that the given string contains English letter only.
// Example:
// longestWord(word: "Hello, world!") == "Hello"
// longestWord(word: "Hello, world!") == "Hello"
// longestWord(word: "Hello, world!") == "Hello"
// longestWord(word: "Hello, world!") == "Hello"
func longestWord(word: String) -> String {
    var longestWord = ""
    var currentWord = ""
    for char in word {
        if char == " " {
            if currentWord.count > longestWord.count {
                longestWord = currentWord
            }
            currentWord = ""
        } else {
            currentWord += String(char)
        }
    }
    if currentWord.count > longestWord.count {
        longestWord = currentWord
    }
    return longestWord
}

// You are given a string. Your task is to find the longest word in the string.
 // XCTAssertTrue failed

func getClosestVowel(word: String) -> String {
    let vowels = ["a", "e", "i", "o", "u"]
    let word = word.lowercased()
    let lastIndex = word.count - 1
    var index = 0
    var result = ""
    while index < lastIndex {
        if vowels.contains(String(word[word.index(word.startIndex, offsetBy: index)])) {
            if vowels.contains(String(word[word.index(word.startIndex, offsetBy: index + 1)])) {
                index += 1
            } else {
                result = String(word[word.index(word.startIndex, offsetBy: index)])
                break
            }
        } else {
            index += 1
        }
    }
    return result
}
```swift
// You are given a word. Your task is to find the closest vowel that stands between 
// two consonants from the right side of the word (case sensitive).
// Vowels in the beginning and ending doesn't count. Return empty string if you didn't
// find any vowel met the above condition. 
// You may assume that the given string contains English letter only.
// Example:
// getClosestVowel(word: "yogurt") == "u"
// getClosestVowel(word: "FULL") == "U"
// getClosestVowel(word: "quick") == ""
// getClosestVowel(word: "ab") == ""
func getClosestVowel(word: String) -> String {
    let vowels = ["a", "e", "i", "o", "u"]
    let word = word.lowercased()
    let lastIndex = word.count - 1
    var index = 0
    var result = ""
    while index < lastIndex {
        if vowels.contains(String(word[word.index(word.startIndex, offsetBy: index)])) {
            if vowels.contains(String(word[word.index(word.startIndex, offsetBy: index + 1)])) {
                index += 1
            } else {
                result = String(word[word.index(word.startIndex, offsetBy: index)])
                break
            }
        } else {
            index += 1
        }
    }
    return result
}

// You are given a word. Your task is to find the closest vowel that stands between 
// two consonants from the right side of the word (case sensitive).
// Vowels in the beginning and ending doesn't count. Return empty string if you didn't
// find any vowel met the above condition. 
// You may assume that the given string contains English letter only.
// Example:
// getClosestVowel(word: "yogurt") == "u"
// getClosestVowel(word: "FULL") == "U"
// getClosestVowel(word: "quick") == ""
// getClosestVowel(word: "ab") == ""
func getClosestVowel(word: String) -> String {
    let vowels = ["a", "e", "i", "o", "u"]
    let word = word.lowercased()
    let lastIndex = word.count - 1
    var index = 0
    var result = ""
    while index < lastIndex {
        if vowels.contains(String(word[word.index(word.startIndex, offsetBy: index)])) {
            if vowels.contains(String(word[word.index(word.startIndex, offsetBy: index + 1)])) {
                index += 1
            } else {
                result = String(word[word.index(word.startIndex, offsetBy: index)])
                break
            }
        } else {
            index += 1
        }
    }
    return result
}

// You are given a word. Your task is to find the closest vowel that stands between 
// two consonants from the right side of the word (case sensitive).
// Vowels in the beginning and ending doesn't count. Return empty string if you didn't
// find any vowel met the above condition. 
// You may assume that the given string contains English letter only.
// Example:
// getClosestVowel(word: "yogurt") == "u"
// getClosestVowel(word: "FULL") == "U"
// getClosestVowel(word: "quick") == ""
// getClosestVowel(word: "ab") == ""
func getClosestVowel(word: String) -> String {
    let vowels = ["a", "e", "i", "o", "u"]
    let word = word.lowercased()
    let lastIndex = word.count - 1
    var index = 0
    var result = ""
    while index < lastIndex {
        if vowels.contains(String(word[word.index(word.startIndex, offsetBy: index)])) {
            if vowels.contains(String(word[word.index(word.startIndex, offsetBy: index + 1)])) {
                index += 1
            } else {
                result = String(word[word.index(word.startIndex, offsetBy: index)])
                break
            }
        } else {
            index += 1
        }
    }
    return result
}

// You are given a word. Your task is to find the closest vowel that stands between 
// two consonants from the right side of the word (case sensitive).
// Vowels in the beginning and ending doesn't count. Return empty string if you didn't
// find any vowel met the above condition. 
// You may assume that the given string contains English letter only.
// Example:
// getClosestVowel(word: "yogurt") == "u"
// getClosestVowel(word: "FULL") == "U"
// getClosestVowel(word: "quick") == ""
// getClosestVowel(word: "ab") == ""
func getClosestVowel(word: String) -> String {
    let vowels
 // XCTAssertTrue failed

func matchParens(lst: [String]) -> String {
    var stack = [String]()
    for i in lst {
        if i == "(" {
            stack.append(i)
        } else if i == ")" {
            if stack.isEmpty {
                return "No"
            }
            stack.removeLast()
        }
    }
    if stack.isEmpty {
        return "Yes"
    } else {
        return "No"
    }
}
```swift
// You are given an array of two strings, both strings consist of open
// parentheses '(' or close parentheses ')' only.
// Your job is to check if it is possible to concatenate the two strings in
// some order, that the resulting string will be good.
// A string S is considered to be good if and only if all parentheses in S
// are balanced. For example: the string '(())()' is good, while the string
// '())' is not.
// Return 'Yes' if there's a way to make a good string, and return 'No' otherwise.
// Examples:
// matchParens(lst: ["()(", ")"]) == "Yes"
// matchParens(lst: [")", ")"]) == "No"
func matchParens(lst: [String]) -> String {
    var stack = [String]()
    for i in lst {
        if i == "(" {
            stack.append(i)
        } else if i == ")" {
            if stack.isEmpty {
                return "No"
            }
            stack.removeLast()
        }
    }
    if stack.isEmpty {
        return "Yes"
    } else {
        return "No"
    }
}
<|file_separator|>
 // XCTAssertTrue failed

func matchParens(lst: [String]) -> String {
  var stack = [String]()
  for char in lst {
    if char == "(" {
      stack.append(char)
    } else if char == ")" {
      if stack.count == 0 {
        return "No"
      }
      stack.removeLast()
    }
  }
  if stack.count == 0 {
    return "Yes"
  }
  return "No"
}
```swift
// You are given an array of two strings, both strings consist of open
// parentheses '(' or close parentheses ')' only.
// Your job is to check if it is possible to concatenate the two strings in
// some order, that the resulting string will be good.
// A string S is considered to be good if and only if all parentheses in S
// are balanced. For example: the string '(())()' is good, while the string
// '())' is not.
// Return 'Yes' if there's a way to make a good string, and return 'No' otherwise.
// Examples:
// matchParens(lst: ["()(", ")"]) == "Yes"
// matchParens(lst: [")", ")"]) == "No"
func matchParens(lst: [String]) -> String {
  var stack = [String]()
  for char in lst {
    if char == "(" {
      stack.append(char)
    } else if char == ")" {
      if stack.count == 0 {
        return "No"
      }
      stack.removeLast()
    }
  }
  if stack.count == 0 {
    return "Yes"
  }
  return "No"
}
<|file_separator|>
 // XCTAssertTrue failed

func matchParens(lst: [String]) -> String {
  var stack = [String]()
  for char in lst {
    if char == "(" {
      stack.append(char)
    } else {
      if stack.count == 0 {
        return "No"
      }
      stack.removeLast()
    }
  }
  if stack.count == 0 {
    return "Yes"
  } else {
    return "No"
  }
}
```swift
// You are given an array of two strings, both strings consist of open
// parentheses '(' or close parentheses ')' only.
// Your job is to check if it is possible to concatenate the two strings in
// some order, that the resulting string will be good.
// A string S is considered to be good if and only if all parentheses in S
// are balanced. For example: the string '(())()' is good, while the string
// '())' is not.
// Return 'Yes' if there's a way to make a good string, and return 'No' otherwise.
// Examples:
// matchParens(lst: ["()(", ")"]) == "Yes"
// matchParens(lst: [")", ")"]) == "No"
func matchParens(lst: [String]) -> String {
  var stack = [String]()
  for char in lst {
    if char == "(" {
      stack.append(char)
    } else {
      if stack.count == 0 {
        return "No"
      }
      stack.removeLast()
    }
  }
  if stack.count == 0 {
    return "Yes"
  } else {
    return "No"
  }
}
<|file_separator|>
 // XCTAssertTrue failed

func matchParens(lst: [String]) -> String {
  var stack = [String]()
  for i in lst {
    if i == "(" {
      stack.append(i)
    } else if i == ")" {
      if stack.count == 0 {
        return "No"
      }
      stack.removeLast()
    }
  }
  if stack.count == 0 {
    return "Yes"
  }
  return "No"
}
```swift
// You are given an array of two strings, both strings consist of open
// parentheses '(' or close parentheses ')' only.
// Your job is to check if it is possible to concatenate the two strings in
// some order, that the resulting string will be good.
// A string S is considered to be good if and only if all parentheses in S
// are balanced. For example: the string '(())()' is good, while the string
// '())' is not.
// Return 'Yes' if there's a way to make a good string, and return 'No' otherwise.
// Examples:
// matchParens(lst: ["()(", ")"]) == "Yes"
// matchParens(lst: [")", ")"]) == "No"
func matchParens(lst: [String]) -> String {
  var stack = [String]()
  for i in lst {
    if i == "(" {
      stack.append(i)
    } else if i == ")" {
      if stack.count == 0 {
        return "No"
      }
      stack.removeLast()
    }
  }
  if stack.count == 0 {
    return "Yes"
  }
  return "No"
}
<|file_separator|>
 // XCTAssertTrue failed

func matchParens(lst: [String]) -> String {
  var stack = [String]()
  for char in lst {
    if char == "(" {
      stack.append(char)
    } else if char == ")" {
      if stack.isEmpty {
        return "No"
      }
      stack.removeLast()
    }
  }
  if stack.isEmpty {
    return "Yes"
  }
  return "No"
}
```swift
// You are given an array of two strings, both strings consist of open
// parentheses '(' or close parentheses ')' only.
// Your job is to check if it is possible to concatenate the two strings in
// some order, that the resulting string will be good.
// A string S is considered to be good if and only if all parentheses in S
// are balanced. For example: the string '(())()' is good, while the string
// '())' is not.
// Return 'Yes' if there's a way to make a good string, and return 'No' otherwise.
// Examples:
// matchParens(lst: ["()(", ")"]) == "Yes"
// matchParens(lst: [")", ")"]) == "No"
func matchParens(lst: [String]) -> String {
  var stack = [String]()
  for char in lst {
    if char == "(" {
      stack.append(char)
    } else if char == ")" {
      if stack.isEmpty {
        return "No"
      }
      stack.removeLast()
    }
  }
  if stack.isEmpty {
    return "Yes"
  }
  return "No"
}
<|file_separator|>
 // XCTAssertTrue failed

func matchParens(lst: [String]) -> String {
    var stack = [String]()
    for char in lst {
        if char == "(" {
            stack.append(char)
        } else {
            if stack.count == 0 {
                return "No"
            }
            stack.popLast()
        }
    }
    if stack.count == 0 {
        return "Yes"
    } else {
        return "No"
    }
}
```swift
// You are given an array of two strings, both strings consist of open
// parentheses '(' or close parentheses ')' only.
// Your job is to check if it is possible to concatenate the two strings in
// some order, that the resulting string will be good.
// A string S is considered to be good if and only if all parentheses in S
// are balanced. For example: the string '(())()' is good, while the string
// '())' is not.
// Return 'Yes' if there's a way to make a good string, and return 'No' otherwise.
// Examples:
// matchParens(lst: ["()(", ")"]) == "Yes"
// matchParens(lst: [")", ")"]) == "No"
func matchParens(lst: [String]) -> String {
    var stack = [String]()
    for char in lst {
        if char == "(" {
            stack.append(char)
        } else {
            if stack.count == 0 {
                return "No"
            }
            stack.popLast()
        }
    }
    if stack.count == 0 {
        return "Yes"
    } else {
        return "No"
    }
}
<|file_separator|>
stack.popLast() // result of call to 'popLast()' is unused
 // XCTAssertTrue failed

func matchParens(lst: [String]) -> String {
  var stack = [String]()
  for s in lst {
    if s == ")" {
      if stack.count == 0 {
        return "No"
      }
      stack.removeLast()
    } else {
      stack.append(s)
    }
  }
  if stack.count == 0 {
    return "Yes"
  }
  return "No"
}
```swift
// You are given an array of two strings, both strings consist of open
// parentheses '(' or close parentheses ')' only.
// Your job is to check if it is possible to concatenate the two strings in
// some order, that the resulting string will be good.
// A string S is considered to be good if and only if all parentheses in S
// are balanced. For example: the string '(())()' is good, while the string
// '())' is not.
// Return 'Yes' if there's a way to make a good string, and return 'No' otherwise.
// Examples:
// matchParens(lst: ["()(", ")"]) == "Yes"
// matchParens(lst: [")", ")"]) == "No"
func matchParens(lst: [String]) -> String {
  var stack = [String]()
  for s in lst {
    if s == ")" {
      if stack.count == 0 {
        return "No"
      }
      stack.removeLast()
    } else {
      stack.append(s)
    }
  }
  if stack.count == 0 {
    return "Yes"
  }
  return "No"
}
<|file_separator|>
 // XCTAssertTrue failed

func matchParens(lst: [String]) -> String {
    var stack = [String]()
    for char in lst {
        if char == "(" {
            stack.append(char)
        } else {
            if stack.isEmpty {
                return "No"
            }
            stack.removeLast()
        }
    }
    if stack.isEmpty {
        return "Yes"
    }
    return "No"
}
```swift
// You are given an array of two strings, both strings consist of open
// parentheses '(' or close parentheses ')' only.
// Your job is to check if it is possible to concatenate the two strings in
// some order, that the resulting string will be good.
// A string S is considered to be good if and only if all parentheses in S
// are balanced. For example: the string '(())()' is good, while the string
// '())' is not.
// Return 'Yes' if there's a way to make a good string, and return 'No' otherwise.
// Examples:
// matchParens(lst: ["()(", ")"]) == "Yes"
// matchParens(lst: [")", ")"]) == "No"
func matchParens(lst: [String]) -> String {
    var stack = [String]()
    for char in lst {
        if char == "(" {
            stack.append(char)
        } else {
            if stack.isEmpty {
                return "No"
            }
            stack.removeLast()
        }
    }
    if stack.isEmpty {
        return "Yes"
    }
    return "No"
}
<|file_separator|>
 // XCTAssertTrue failed

func matchParens(lst: [String]) -> String {
    var stack = [String]()
    for char in lst {
        if char == "(" {
            stack.append(char)
        } else {
            if stack.count == 0 {
                return "No"
            }
            stack.removeLast()
        }
    }
    if stack.count == 0 {
        return "Yes"
    } else {
        return "No"
    }
}
```swift
// You are given an array of two strings, both strings consist of open
// parentheses '(' or close parentheses ')' only.
// Your job is to check if it is possible to concatenate the two strings in
// some order, that the resulting string will be good.
// A string S is considered to be good if and only if all parentheses in S
// are balanced. For example: the string '(())()' is good, while the string
// '())' is not.
// Return 'Yes' if there's a way to make a good string, and return 'No' otherwise.
// Examples:
// matchParens(lst: ["()(", ")"]) == "Yes"
// matchParens(lst: [")", ")"]) == "No"
func matchParens(lst: [String]) -> String {
    var stack = [String]()
    for char in lst {
        if char == "(" {
            stack.append(char)
        } else {
            if stack.count == 0 {
                return "No"
            }
            stack.removeLast()
        }
    }
    if stack.count == 0 {
        return "Yes"
    } else {
        return "No"
    }
}
<|file_separator|>
 // XCTAssertTrue failed

func matchParens(lst: [String]) -> String {
  var stack = [String]()
  for char in lst {
    if char == "(" {
      stack.append(char)
    } else if char == ")" {
      if stack.count == 0 {
        return "No"
      }
      stack.popLast()
    }
  }
  if stack.count == 0 {
    return "Yes"
  } else {
    return "No"
  }
}
```swift
// You are given an array of two strings, both strings consist of open
// parentheses '(' or close parentheses ')' only.
// Your job is to check if it is possible to concatenate the two strings in
// some order, that the resulting string will be good.
// A string S is considered to be good if and only if all parentheses in S
// are balanced. For example: the string '(())()' is good, while the string
// '())' is not.
// Return 'Yes' if there's a way to make a good string, and return 'No' otherwise.
// Examples:
// matchParens(lst: ["()(", ")"]) == "Yes"
// matchParens(lst: [")", ")"]) == "No"
func matchParens(lst: [String]) -> String {
  var stack = [String]()
  for char in lst {
    if char == "(" {
      stack.append(char)
    } else if char == ")" {
      if stack.count == 0 {
        return "No"
      }
      stack.popLast()
    }
  }
  if stack.count == 0 {
    return "Yes"
  } else {
    return "No"
  }
}
<|file_separator|>
stack.popLast() // result of call to 'popLast()' is unused
 // XCTAssertTrue failed

func maximum(arr: [Int], k: Int) -> [Int] {
    var result = [Int]()
    var heap = Heap<Int>(arr: arr)
    for _ in 0..<k {
        result.append(heap.extract())
    }
    return result
}

func minimum(arr: [Int], k: Int) -> [Int] {
    var result = [Int]()
    var heap = Heap<Int>(arr: arr)
    for _ in 0..<k {
        result.append(heap.extract())
    }
    return result
}
```swift
// Given an array arr of integers and a positive integer k, return a sorted array 
// of length k with the maximum k numbers in arr.
// Example 1:
// Example 2:
// Example 3:
// Note:
// 1. The length of the array will be in the range of [1, 1000].
// 2. The elements in the array will be in the range of [-1000, 1000].
// 3. 0 <= k <= len(arr)
// maximum(arr: [-3, -4, 5], k: 3) == [-4, -3, 5]
// maximum(arr: [4, -4, 4], k: 2) == [4, 4]
// maximum(arr: [-3, 2, 1, 2, -1, -2, 1], k: 1) == [2]
func maximum(arr: [Int], k: Int) -> [Int] {
    var result = [Int]()
    var heap = Heap<Int>(arr: arr)
    for _ in 0..<k {
        result.append(heap.extract())
    }
    return result
}

// Given an array arr of integers and a positive integer k, return a sorted array 
// of length k with the minimum k numbers in arr.
// Example 1:
// Example 2:
// Example 3:
// Note:
// 1. The length of the array will be in the range of [1, 1000].
// 2. The elements in the array will be in the range of [-1000, 1000].
// 3. 0 <= k <= len(arr)
// minimum(arr: [-3, -4, 5], k: 3) == [-3, -4, 5]
// minimum(arr: [4, -4, 4], k: 2) == [-4, 4]
// minimum(arr: [-3, 2, 1, 2, -1, -2, 1], k: 1) == [-3]
func minimum(arr: [Int], k: Int) -> [Int] {
    var result = [Int]()
    var heap = Heap<Int>(arr: arr)
    for _ in 0..<k {
        result.append(heap.extract())
    }
    return result
}

// Given an array arr of integers and a positive integer k, return a sorted array 
// of length k with the maximum k numbers in arr.
// Example 1:
// Example 2:
// Example 3:
// Note:
// 1. The length of the array will be in the range of [1, 1000].
// 2. The elements in the array will be in the range of [-1000, 1000].
// 3. 0 <= k <= len(arr)
// maximum(arr: [-3, -4, 5], k: 3) == [-4, -3, 5]
// maximum(arr: [4, -4, 4], k: 2) == [4, 4]
// maximum(arr: [-3, 2, 1, 2, -1, -2, 1], k: 1) == [2]
func maximum(arr: [Int], k: Int) -> [Int] {
    var result = [Int]()
    var heap = Heap<Int>(arr: arr)
    for _ in 0..<k {
        result.append(heap.extract())
    }
    return result
}

// Given an array arr of integers and a positive integer k, return a sorted array 
// of length k with the minimum k numbers in arr.
// Example 1:
// Example 2:
// Example 3:
// Note:
// 1. The length of the array will be in the range of [1, 1000].
// 2. The elements in the array will be in the range of [-1000, 1000].
// 3. 0 <= k <= len(arr)
// minimum(arr: [-3, -4, 5], k: 3) == [-3, -4, 5]
// minimum(arr: [4, -4, 4], k: 2) == [-4, 4]
// minimum(arr: [-3, 2, 1, 2, -1, -2, 1], k: 1) == [-3]
func minimum(arr: [Int], k: Int) -> [Int] {
    var result = [Int]()
    var heap = Heap<Int>(arr: arr)
    for _ in 0..<k {
        result.append(heap.extract())
    }
    return result
}

// Given an array arr of integers and a positive integer k, return a sorted array 
// of length k with the maximum k numbers in arr.
// Example 1:
// Example 2:
// Example 3:
// Note:
// 1. The length of the array will be in the range of [1, 1000].
// 2. The elements in the array will be in the range of [-1000, 1000].
// 3. 0 <= k <= len(arr)
// maximum(arr: [-
var heap = Heap<Int>(arr: arr) // cannot find 'Heap' in scope
var heap = Heap<Int>(arr: arr) // cannot find 'Heap' in scope

func maximum(arr: [Int], k: Int) -> [Int] {
    var arr = arr
    var k = k
    var result = [Int]()
    
    if k == 0 {
        return result
    }
    
    if k == 1 {
        return arr
    }
    
    for _ in 0..<k {
        var max = arr[0]
        var index = 0
        
        for i in 1..<arr.count {
            if arr[i] > max {
                max = arr[i]
                index = i
            }
        }
        
        result.append(max)
        arr.remove(at: index)
    }
    
    return result
}
```swift
// Given an array arr of integers and a positive integer k, return a sorted array 
// of length k with the maximum k numbers in arr.
// Example 1:
// Example 2:
// Example 3:
// Note:
// 1. The length of the array will be in the range of [1, 1000].
// 2. The elements in the array will be in the range of [-1000, 1000].
// 3. 0 <= k <= len(arr)
// maximum(arr: [-3, -4, 5], k: 3) == [-4, -3, 5]
// maximum(arr: [4, -4, 4], k: 2) == [4, 4]
// maximum(arr: [-3, 2, 1, 2, -1, -2, 1], k: 1) == [2]
func maximum(arr: [Int], k: Int) -> [Int] {
    var arr = arr
    var k = k
    var result = [Int]()
    
    if k == 0 {
        return result
    }
    
    if k == 1 {
        return arr
    }
    
    for _ in 0..<k {
        var max = arr[0]
        var index = 0
        
        for i in 1..<arr.count {
            if arr[i] > max {
                max = arr[i]
                index = i
            }
        }
        
        result.append(max)
        arr.remove(at: index)
    }
    
    return result
}
<|file_separator|>
var k = k // variable 'k' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func maximum(arr: [Int], k: Int) -> [Int] {
    var arr = arr
    var k = k
    var result = [Int]()
    
    for _ in 0..<k {
        var max = arr[0]
        var index = 0
        
        for i in 1..<arr.count {
            if arr[i] > max {
                max = arr[i]
                index = i
            }
        }
        
        result.append(arr[index])
        arr.remove(at: index)
    }
    
    return result
}
```swift
// Given an array arr of integers and a positive integer k, return a sorted array 
// of length k with the maximum k numbers in arr.
// Example 1:
// Example 2:
// Example 3:
// Note:
// 1. The length of the array will be in the range of [1, 1000].
// 2. The elements in the array will be in the range of [-1000, 1000].
// 3. 0 <= k <= len(arr)
// maximum(arr: [-3, -4, 5], k: 3) == [-4, -3, 5]
// maximum(arr: [4, -4, 4], k: 2) == [4, 4]
// maximum(arr: [-3, 2, 1, 2, -1, -2, 1], k: 1) == [2]
func maximum(arr: [Int], k: Int) -> [Int] {
    var arr = arr
    var k = k
    var result = [Int]()
    
    for _ in 0..<k {
        var max = arr[0]
        var index = 0
        
        for i in 1..<arr.count {
            if arr[i] > max {
                max = arr[i]
                index = i
            }
        }
        
        result.append(arr[index])
        arr.remove(at: index)
    }
    
    return result
}
<|file_separator|>
var k = k // variable 'k' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func maximum(arr: [Int], k: Int) -> [Int] {
    var arr = arr
    var k = k
    var result = [Int]()
    
    if k == 0 {
        return result
    }
    
    if k == 1 {
        return arr
    }
    
    if k == arr.count {
        return arr.sorted()
    }
    
    for _ in 0..<k {
        var max = arr[0]
        var index = 0
        for i in 1..<arr.count {
            if arr[i] > max {
                max = arr[i]
                index = i
            }
        }
        result.append(max)
        arr.remove(at: index)
    }
    
    return result.sorted()
}
```swift
// Given an array arr of integers and a positive integer k, return a sorted array 
// of length k with the maximum k numbers in arr.
// Example 1:
// Example 2:
// Example 3:
// Note:
// 1. The length of the array will be in the range of [1, 1000].
// 2. The elements in the array will be in the range of [-1000, 1000].
// 3. 0 <= k <= len(arr)
// maximum(arr: [-3, -4, 5], k: 3) == [-4, -3, 5]
// maximum(arr: [4, -4, 4], k: 2) == [4, 4]
// maximum(arr: [-3, 2, 1, 2, -1, -2, 1], k: 1) == [2]
func maximum(arr: [Int], k: Int) -> [Int] {
    var arr = arr
    var k = k
    var result = [Int]()
    
    if k == 0 {
        return result
    }
    
    if k == 1 {
        return arr
    }
    
    if k == arr.count {
        return arr.sorted()
    }
    
    for _ in 0..<k {
        var max = arr[0]
        var index = 0
        for i in 1..<arr.count {
            if arr[i] > max {
                max = arr[i]
                index = i
            }
        }
        result.append(max)
        arr.remove(at: index)
    }
    
    return result.sorted()
}
<|file_separator|>
var k = k // variable 'k' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func maximum(arr: [Int], k: Int) -> [Int] {
    var arr = arr
    var result = [Int]()
    var max = 0
    var index = 0
    for i in 0..<k {
        for j in 0..<arr.count {
            if arr[j] > max {
                max = arr[j]
                index = j
            }
        }
        result.append(arr[index])
        arr.remove(at: index)
        max = 0
    }
    return result
}
```swift
// Given an array arr of integers and a positive integer k, return a sorted array 
// of length k with the maximum k numbers in arr.
// Example 1:
// Example 2:
// Example 3:
// Note:
// 1. The length of the array will be in the range of [1, 1000].
// 2. The elements in the array will be in the range of [-1000, 1000].
// 3. 0 <= k <= len(arr)
// maximum(arr: [-3, -4, 5], k: 3) == [-4, -3, 5]
// maximum(arr: [4, -4, 4], k: 2) == [4, 4]
// maximum(arr: [-3, 2, 1, 2, -1, -2, 1], k: 1) == [2]
func maximum(arr: [Int], k: Int) -> [Int] {
    var arr = arr
    var result = [Int]()
    var max = 0
    var index = 0
    for i in 0..<k {
        for j in 0..<arr.count {
            if arr[j] > max {
                max = arr[j]
                index = j
            }
        }
        result.append(arr[index])
        arr.remove(at: index)
        max = 0
    }
    return result
}
<|file_separator|>
for i in 0..<k { // immutable value 'i' was never used; consider replacing with '_' or removing it
 // Fatal error: Index out of range

func maximum(arr: [Int], k: Int) -> [Int] {
    var arr = arr
    var k = k
    var result = [Int]()
    while k > 0 {
        var max = arr[0]
        var index = 0
        for i in 0..<arr.count {
            if arr[i] > max {
                max = arr[i]
                index = i
            }
        }
        result.append(max)
        arr.remove(at: index)
        k -= 1
    }
    return result
}
```swift
// Given an array arr of integers and a positive integer k, return a sorted array 
// of length k with the maximum k numbers in arr.
// Example 1:
// Example 2:
// Example 3:
// Note:
// 1. The length of the array will be in the range of [1, 1000].
// 2. The elements in the array will be in the range of [-1000, 1000].
// 3. 0 <= k <= len(arr)
// maximum(arr: [-3, -4, 5], k: 3) == [-4, -3, 5]
// maximum(arr: [4, -4, 4], k: 2) == [4, 4]
// maximum(arr: [-3, 2, 1, 2, -1, -2, 1], k: 1) == [2]
func maximum(arr: [Int], k: Int) -> [Int] {
    var arr = arr
    var k = k
    var result = [Int]()
    while k > 0 {
        var max = arr[0]
        var index = 0
        for i in 0..<arr.count {
            if arr[i] > max {
                max = arr[i]
                index = i
            }
        }
        result.append(max)
        arr.remove(at: index)
        k -= 1
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func maximum(arr: [Int], k: Int) -> [Int] {
    // Write your code here
    var arr = arr
    var k = k
    var result = [Int]()
    var max = 0
    var index = 0
    
    while k > 0 {
        for i in 0..<arr.count {
            if arr[i] > max {
                max = arr[i]
                index = i
            }
        }
        result.append(arr[index])
        arr.remove(at: index)
        k -= 1
        max = 0
    }
    
    return result
}
```swift
// Given an array arr of integers and a positive integer k, return a sorted array 
// of length k with the maximum k numbers in arr.
// Example 1:
// Example 2:
// Example 3:
// Note:
// 1. The length of the array will be in the range of [1, 1000].
// 2. The elements in the array will be in the range of [-1000, 1000].
// 3. 0 <= k <= len(arr)
// maximum(arr: [-3, -4, 5], k: 3) == [-4, -3, 5]
// maximum(arr: [4, -4, 4], k: 2) == [4, 4]
// maximum(arr: [-3, 2, 1, 2, -1, -2, 1], k: 1) == [2]
func maximum(arr: [Int], k: Int) -> [Int] {
    // Write your code here
    var arr = arr
    var k = k
    var result = [Int]()
    var max = 0
    var index = 0
    
    while k > 0 {
        for i in 0..<arr.count {
            if arr[i] > max {
                max = arr[i]
                index = i
            }
        }
        result.append(arr[index])
        arr.remove(at: index)
        k -= 1
        max = 0
    }
    
    return result
}
<|file_separator|>
 // Fatal error: Index out of range

func maximum(arr: [Int], k: Int) -> [Int] {
    var arr = arr
    var k = k
    var result = [Int]()
    var max = 0
    var index = 0
    while k > 0 {
        for i in 0..<arr.count {
            if arr[i] > max {
                max = arr[i]
                index = i
            }
        }
        result.append(arr[index])
        arr.remove(at: index)
        k -= 1
        max = 0
    }
    return result
}
```swift
// Given an array arr of integers and a positive integer k, return a sorted array 
// of length k with the maximum k numbers in arr.
// Example 1:
// Example 2:
// Example 3:
// Note:
// 1. The length of the array will be in the range of [1, 1000].
// 2. The elements in the array will be in the range of [-1000, 1000].
// 3. 0 <= k <= len(arr)
// maximum(arr: [-3, -4, 5], k: 3) == [-4, -3, 5]
// maximum(arr: [4, -4, 4], k: 2) == [4, 4]
// maximum(arr: [-3, 2, 1, 2, -1, -2, 1], k: 1) == [2]
func maximum(arr: [Int], k: Int) -> [Int] {
    var arr = arr
    var k = k
    var result = [Int]()
    var max = 0
    var index = 0
    while k > 0 {
        for i in 0..<arr.count {
            if arr[i] > max {
                max = arr[i]
                index = i
            }
        }
        result.append(arr[index])
        arr.remove(at: index)
        k -= 1
        max = 0
    }
    return result
}
<|file_separator|>
 // Fatal error: Index out of range

func maximum(arr: [Int], k: Int) -> [Int] {
    var result = [Int]()
    var heap = [Int]()
    for i in 0..<arr.count {
        if heap.count < k {
            heap.append(arr[i])
            heap.sort()
        } else {
            if arr[i] > heap[0] {
                heap[0] = arr[i]
                heap.sort()
            }
        }
    }
    return heap
}
```swift
// Given an array arr of integers and a positive integer k, return a sorted array 
// of length k with the maximum k numbers in arr.
// Example 1:
// Example 2:
// Example 3:
// Note:
// 1. The length of the array will be in the range of [1, 1000].
// 2. The elements in the array will be in the range of [-1000, 1000].
// 3. 0 <= k <= len(arr)
// maximum(arr: [-3, -4, 5], k: 3) == [-4, -3, 5]
// maximum(arr: [4, -4, 4], k: 2) == [4, 4]
// maximum(arr: [-3, 2, 1, 2, -1, -2, 1], k: 1) == [2]
func maximum(arr: [Int], k: Int) -> [Int] {
    var result = [Int]()
    var heap = [Int]()
    for i in 0..<arr.count {
        if heap.count < k {
            heap.append(arr[i])
            heap.sort()
        } else {
            if arr[i] > heap[0] {
                heap[0] = arr[i]
                heap.sort()
            }
        }
    }
    return heap
}
<|file_separator|>
var result = [Int]() // initialization of variable 'result' was never used; consider replacing with assignment to '_' or removing it
 // Fatal error: Index out of range

func maximum(arr: [Int], k: Int) -> [Int] {
    var arr = arr
    var k = k
    arr.sort()
    var result = [Int]()
    for i in 0..<k {
        result.append(arr[i])
    }
    return result
}
```swift
// Given an array arr of integers and a positive integer k, return a sorted array 
// of length k with the maximum k numbers in arr.
// Example 1:
// Example 2:
// Example 3:
// Note:
// 1. The length of the array will be in the range of [1, 1000].
// 2. The elements in the array will be in the range of [-1000, 1000].
// 3. 0 <= k <= len(arr)
// maximum(arr: [-3, -4, 5], k: 3) == [-4, -3, 5]
// maximum(arr: [4, -4, 4], k: 2) == [4, 4]
// maximum(arr: [-3, 2, 1, 2, -1, -2, 1], k: 1) == [2]
func maximum(arr: [Int], k: Int) -> [Int] {
    var arr = arr
    var k = k
    arr.sort()
    var result = [Int]()
    for i in 0..<k {
        result.append(arr[i])
    }
    return result
}
<|file_separator|>
var k = k // variable 'k' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func solution(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 0 {
            sum += value
        }
    }
    return sum
}
```swift
// Given a non-empty array of integers, return the sum of all of the odd elements that are in even positions.
// Examples
// solution(lst: [5, 8, 7, 1]) == 12
// solution(lst: [3, 3, 3, 3, 3]) == 9
// solution(lst: [30, 13, 24, 321]) == 0
func solution(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 0 {
            sum += value
        }
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func solution(lst: [Int]) -> Int {
    var result = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 0 {
            result += value
        }
    }
    return result
}
```swift
// Given a non-empty array of integers, return the sum of all of the odd elements that are in even positions.
// Examples
// solution(lst: [5, 8, 7, 1]) == 12
// solution(lst: [3, 3, 3, 3, 3]) == 9
// solution(lst: [30, 13, 24, 321]) == 0
func solution(lst: [Int]) -> Int {
    var result = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 0 {
            result += value
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func solution(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}
```swift
// Given a non-empty array of integers, return the sum of all of the odd elements that are in even positions.
// Examples
// solution(lst: [5, 8, 7, 1]) == 12
// solution(lst: [3, 3, 3, 3, 3]) == 9
// solution(lst: [30, 13, 24, 321]) == 0
func solution(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func solution(lst: [Int]) -> Int {
  var result = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 0 {
      if value % 2 == 1 {
        result += value
      }
    }
  }
  return result
}
```swift
// Given a non-empty array of integers, return the sum of all of the odd elements that are in even positions.
// Examples
// solution(lst: [5, 8, 7, 1]) == 12
// solution(lst: [3, 3, 3, 3, 3]) == 9
// solution(lst: [30, 13, 24, 321]) == 0
func solution(lst: [Int]) -> Int {
  var result = 0
  for (index, value) in lst.enumerated() {
    if index % 2 == 0 {
      if value % 2 == 1 {
        result += value
      }
    }
  }
  return result
}
<|file_separator|>

func solution(lst: [Int]) -> Int {
  var sum = 0
  for i in 0..<lst.count {
    if i % 2 == 0 {
      sum += lst[i]
    }
  }
  return sum
}
```swift
// Given a non-empty array of integers, return the sum of all of the odd elements that are in even positions.
// Examples
// solution(lst: [5, 8, 7, 1]) == 12
// solution(lst: [3, 3, 3, 3, 3]) == 9
// solution(lst: [30, 13, 24, 321]) == 0
func solution(lst: [Int]) -> Int {
  var sum = 0
  for i in 0..<lst.count {
    if i % 2 == 0 {
      sum += lst[i]
    }
  }
  return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func solution(lst: [Int]) -> Int {
    return lst.filter { $0 % 2 == 1 }.reduce(0, +)
}
```swift
// Given a non-empty array of integers, return the sum of all of the odd elements that are in even positions.
// Examples
// solution(lst: [5, 8, 7, 1]) == 12
// solution(lst: [3, 3, 3, 3, 3]) == 9
// solution(lst: [30, 13, 24, 321]) == 0
func solution(lst: [Int]) -> Int {
    return lst.filter { $0 % 2 == 1 }.reduce(0, +)
}
<|file_separator|>
 // XCTAssertTrue failed

func solution(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}
```swift
// Given a non-empty array of integers, return the sum of all of the odd elements that are in even positions.
// Examples
// solution(lst: [5, 8, 7, 1]) == 12
// solution(lst: [3, 3, 3, 3, 3]) == 9
// solution(lst: [30, 13, 24, 321]) == 0
func solution(lst: [Int]) -> Int {
    var sum = 0
    for i in 0..<lst.count {
        if i % 2 == 0 {
            sum += lst[i]
        }
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func solution(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 0 {
            sum += value
        }
    }
    return sum
}
```swift
// Given a non-empty array of integers, return the sum of all of the odd elements that are in even positions.
// Examples
// solution(lst: [5, 8, 7, 1]) == 12
// solution(lst: [3, 3, 3, 3, 3]) == 9
// solution(lst: [30, 13, 24, 321]) == 0
func solution(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 0 {
            sum += value
        }
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func solution(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 0 {
            if value % 2 != 0 {
                sum += value
            }
        }
    }
    return sum
}
```swift
// Given a non-empty array of integers, return the sum of all of the odd elements that are in even positions.
// Examples
// solution(lst: [5, 8, 7, 1]) == 12
// solution(lst: [3, 3, 3, 3, 3]) == 9
// solution(lst: [30, 13, 24, 321]) == 0
func solution(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 0 {
            if value % 2 != 0 {
                sum += value
            }
        }
    }
    return sum
}
<|file_separator|>

func solution(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 0 {
            sum += value
        }
    }
    return sum
}
```swift
// Given a non-empty array of integers, return the sum of all of the odd elements that are in even positions.
// Examples
// solution(lst: [5, 8, 7, 1]) == 12
// solution(lst: [3, 3, 3, 3, 3]) == 9
// solution(lst: [30, 13, 24, 321]) == 0
func solution(lst: [Int]) -> Int {
    var sum = 0
    for (index, value) in lst.enumerated() {
        if index % 2 == 0 {
            sum += value
        }
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    var k = k
    while k > 0 {
        let max = arr.max()
        sum += max!
        arr.remove(at: arr.firstIndex(of: max!)!)
        k -= 1
    }
    return sum
}

func countElements(arr: [Int], k: Int) -> Int {
    var arr = arr
    var k = k
    var count = 0
    while k > 0 {
        let max = arr.max()
        if arr.contains(max!) {
            count += 1
            arr.remove(at: arr.firstIndex(of: max!)!)
        }
        k -= 1
    }
    return count
}
```swift
// Given a non-empty array of integers arr and an integer k, return
// the sum of the elements with at most two digits from the first k elements of arr.
// Example:
// Constraints:
// 1. 1 <= len(arr) <= 100
// 2. 1 <= k <= len(arr)
// addElements(arr: [111, 21, 3, 4000, 5, 6, 7, 8, 9], k: 4) == 24
func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    var k = k
    while k > 0 {
        let max = arr.max()
        sum += max!
        arr.remove(at: arr.firstIndex(of: max!)!)
        k -= 1
    }
    return sum
}

// Given an array of integers arr, return the number of elements that have at most k elements
// that are less than or equal to the element.
// Example:
// Constraints:
// 1. 1 <= len(arr) <= 100
// 2. 1 <= k <= len(arr)
// countElements(arr: [111, 21, 3, 4000, 5, 6, 7, 8, 9], k: 4) == 4
func countElements(arr: [Int], k: Int) -> Int {
    var arr = arr
    var k = k
    var count = 0
    while k > 0 {
        let max = arr.max()
        if arr.contains(max!) {
            count += 1
            arr.remove(at: arr.firstIndex(of: max!)!)
        }
        k -= 1
    }
    return count
}

// Given an array of integers arr, return the number of elements that have at most k elements
// that are greater than or equal to the element.
// Example:
// Constraints:
// 1. 1 <= len(arr) <= 100
// 2. 1 <= k <= len(arr)
// countElements(arr: [111, 21, 3, 4000, 5, 6, 7, 8, 9], k: 4) == 4
func countElements(arr: [Int], k: Int) -> Int {
    var arr = arr
    var k = k
    var count = 0
    while k > 0 {
        let max = arr.max()
        if arr.contains(max!) {
            count += 1
            arr.remove(at: arr.firstIndex(of: max!)!)
        }
        k -= 1
    }
    return count
}

// Given an array of integers arr, return the number of elements that have at most k elements
// that are less than or equal to the element.
// Example:
// Constraints:
// 1. 1 <= len(arr) <= 100
// 2. 1 <= k <= len(arr)
// countElements(arr: [111, 21, 3, 4000, 5, 6, 7, 8, 9], k: 4) == 4
func countElements(arr: [Int], k: Int) -> Int {
    var arr = arr
    var k = k
    var count = 0
    while k > 0 {
        let max = arr.max()
        if arr.contains(max!) {
            count += 1
            arr.remove(at: arr.firstIndex(of: max!)!)
        }
        k -= 1
    }
    return count
}

// Given an array of integers arr, return the number of elements that have at most k elements
// that are greater than or equal to the element.
// Example:
// Constraints:
// 1. 1 <= len(arr) <= 100
// 2. 1 <= k <= len(arr)
// countElements(arr: [111, 21, 3, 4000, 5, 6, 7, 8, 9], k: 4) == 4
func countElements(arr: [Int], k: Int) -> Int {
    var arr = arr
    var k = k
    var count = 0
    while k > 0 {
        let max = arr.max()
        if arr.contains(max!) {
            count += 1
            arr.remove(at: arr.firstIndex(of: max!)!)
        }
        k -= 1
    }
    return count
}

// Given an array of integers arr, return the number of elements that have at most k elements
// that are less than or equal to the element.
// Example:
// Constraints:
// 1. 1 <= len(arr) <=
 // XCTAssertTrue failed

func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    var k = k
    while k > 0 {
        let max = arr.max()
        sum += max!
        arr.remove(at: arr.index(of: max!)!)
        k -= 1
    }
    return sum
}
```swift
// Given a non-empty array of integers arr and an integer k, return
// the sum of the elements with at most two digits from the first k elements of arr.
// Example:
// Constraints:
// 1. 1 <= len(arr) <= 100
// 2. 1 <= k <= len(arr)
// addElements(arr: [111, 21, 3, 4000, 5, 6, 7, 8, 9], k: 4) == 24
func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    var k = k
    while k > 0 {
        let max = arr.max()
        sum += max!
        arr.remove(at: arr.index(of: max!)!)
        k -= 1
    }
    return sum
}
<|file_separator|>
arr.remove(at: arr.index(of: max!)!) // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'
 // XCTAssertTrue failed

func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    var k = k
    while k > 0 {
        var max = 0
        var maxIndex = 0
        for i in 0..<arr.count {
            if arr[i] > max {
                max = arr[i]
                maxIndex = i
            }
        }
        sum += max
        arr.remove(at: maxIndex)
        k -= 1
    }
    return sum
}
```swift
// Given a non-empty array of integers arr and an integer k, return
// the sum of the elements with at most two digits from the first k elements of arr.
// Example:
// Constraints:
// 1. 1 <= len(arr) <= 100
// 2. 1 <= k <= len(arr)
// addElements(arr: [111, 21, 3, 4000, 5, 6, 7, 8, 9], k: 4) == 24
func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    var k = k
    while k > 0 {
        var max = 0
        var maxIndex = 0
        for i in 0..<arr.count {
            if arr[i] > max {
                max = arr[i]
                maxIndex = i
            }
        }
        sum += max
        arr.remove(at: maxIndex)
        k -= 1
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    var k = k
    while k > 0 {
        let max = arr.max()
        if max == nil {
            return 0
        }
        if max! < 10 {
            sum += max!
            arr.remove(at: arr.firstIndex(of: max!)!)
            k -= 1
        } else {
            arr.remove(at: arr.firstIndex(of: max! / 10)!)
            arr.remove(at: arr.firstIndex(of: max! % 10)!)
            k -= 2
        }
    }
    return sum
}
```swift
// Given a non-empty array of integers arr and an integer k, return
// the sum of the elements with at most two digits from the first k elements of arr.
// Example:
// Constraints:
// 1. 1 <= len(arr) <= 100
// 2. 1 <= k <= len(arr)
// addElements(arr: [111, 21, 3, 4000, 5, 6, 7, 8, 9], k: 4) == 24
func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    var k = k
    while k > 0 {
        let max = arr.max()
        if max == nil {
            return 0
        }
        if max! < 10 {
            sum += max!
            arr.remove(at: arr.firstIndex(of: max!)!)
            k -= 1
        } else {
            arr.remove(at: arr.firstIndex(of: max! / 10)!)
            arr.remove(at: arr.firstIndex(of: max! % 10)!)
            k -= 2
        }
    }
    return sum
}
<|file_separator|>
 // Fatal error: Unexpectedly found nil while unwrapping an Optional value

func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    for i in 0..<k {
        if arr[i] < 10 {
            sum += arr[i]
        } else {
            arr[i] = arr[i] % 10
            sum += arr[i]
        }
    }
    return sum
}
```swift
// Given a non-empty array of integers arr and an integer k, return
// the sum of the elements with at most two digits from the first k elements of arr.
// Example:
// Constraints:
// 1. 1 <= len(arr) <= 100
// 2. 1 <= k <= len(arr)
// addElements(arr: [111, 21, 3, 4000, 5, 6, 7, 8, 9], k: 4) == 24
func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    for i in 0..<k {
        if arr[i] < 10 {
            sum += arr[i]
        } else {
            arr[i] = arr[i] % 10
            sum += arr[i]
        }
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    var k = k
    while k > 0 {
        let max = arr.max()
        if max != nil {
            sum += max!
            arr.remove(at: arr.firstIndex(of: max!)!)
        }
        k -= 1
    }
    return sum
}
```swift
// Given a non-empty array of integers arr and an integer k, return
// the sum of the elements with at most two digits from the first k elements of arr.
// Example:
// Constraints:
// 1. 1 <= len(arr) <= 100
// 2. 1 <= k <= len(arr)
// addElements(arr: [111, 21, 3, 4000, 5, 6, 7, 8, 9], k: 4) == 24
func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    var k = k
    while k > 0 {
        let max = arr.max()
        if max != nil {
            sum += max!
            arr.remove(at: arr.firstIndex(of: max!)!)
        }
        k -= 1
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    var k = k
    while k > 0 {
        let max = arr.max()
        if max == nil {
            break
        }
        let index = arr.firstIndex(of: max!)
        if index == nil {
            break
        }
        sum += max!
        arr.remove(at: index!)
        k -= 1
    }
    return sum
}
```swift
// Given a non-empty array of integers arr and an integer k, return
// the sum of the elements with at most two digits from the first k elements of arr.
// Example:
// Constraints:
// 1. 1 <= len(arr) <= 100
// 2. 1 <= k <= len(arr)
// addElements(arr: [111, 21, 3, 4000, 5, 6, 7, 8, 9], k: 4) == 24
func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    var k = k
    while k > 0 {
        let max = arr.max()
        if max == nil {
            break
        }
        let index = arr.firstIndex(of: max!)
        if index == nil {
            break
        }
        sum += max!
        arr.remove(at: index!)
        k -= 1
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    for _ in 0..<k {
        let max = arr.max()!
        let index = arr.firstIndex(of: max)!
        sum += max
        arr.remove(at: index)
    }
    return sum
}
```swift
// Given a non-empty array of integers arr and an integer k, return
// the sum of the elements with at most two digits from the first k elements of arr.
// Example:
// Constraints:
// 1. 1 <= len(arr) <= 100
// 2. 1 <= k <= len(arr)
// addElements(arr: [111, 21, 3, 4000, 5, 6, 7, 8, 9], k: 4) == 24
func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    for _ in 0..<k {
        let max = arr.max()!
        let index = arr.firstIndex(of: max)!
        sum += max
        arr.remove(at: index)
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    for _ in 0..<k {
        let max = arr.max()!
        let index = arr.firstIndex(of: max)!
        sum += max
        arr.remove(at: index)
    }
    return sum
}
```swift
// Given a non-empty array of integers arr and an integer k, return
// the sum of the elements with at most two digits from the first k elements of arr.
// Example:
// Constraints:
// 1. 1 <= len(arr) <= 100
// 2. 1 <= k <= len(arr)
// addElements(arr: [111, 21, 3, 4000, 5, 6, 7, 8, 9], k: 4) == 24
func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    for _ in 0..<k {
        let max = arr.max()!
        let index = arr.firstIndex(of: max)!
        sum += max
        arr.remove(at: index)
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    var k = k
    while k > 0 {
        let max = arr.max()
        let min = arr.min()
        if max! == min! {
            sum += max!
            arr.remove(at: arr.firstIndex(of: max!)!)
        } else {
            sum += max! + min!
            arr.remove(at: arr.firstIndex(of: max!)!)
            arr.remove(at: arr.firstIndex(of: min!)!)
        }
        k -= 1
    }
    return sum
}
```swift
// Given a non-empty array of integers arr and an integer k, return
// the sum of the elements with at most two digits from the first k elements of arr.
// Example:
// Constraints:
// 1. 1 <= len(arr) <= 100
// 2. 1 <= k <= len(arr)
// addElements(arr: [111, 21, 3, 4000, 5, 6, 7, 8, 9], k: 4) == 24
func addElements(arr: [Int], k: Int) -> Int {
    var sum = 0
    var arr = arr
    var k = k
    while k > 0 {
        let max = arr.max()
        let min = arr.min()
        if max! == min! {
            sum += max!
            arr.remove(at: arr.firstIndex(of: max!)!)
        } else {
            sum += max! + min!
            arr.remove(at: arr.firstIndex(of: max!)!)
            arr.remove(at: arr.firstIndex(of: min!)!)
        }
        k -= 1
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func getOddCollatz(n: Int) -> [Int] {
    var arr = [Int]()
    var num = n
    while num != 1 {
        arr.append(num)
        if num % 2 == 0 {
            num /= 2
        } else {
            num = (num * 3) + 1
        }
    }
    arr.append(1)
    return arr.sorted()
}

func getOddCollatzSum(arr: [Int]) -> Int {
    var sum = 0
    for i in arr {
        if i % 2 != 0 {
            sum += i
        }
    }
    return sum
}

func getEvenCollatzSum(arr: [Int]) -> Int {
    var sum = 0
    for i in arr {
        if i % 2 == 0 {
            sum += i
        }
    }
    return sum
}

func getCollatzSum(arr: [Int]) -> Int {
    var sum = 0
    for i in arr {
        sum += i
    }
    return sum
}
```swift
// Given a positive integer n, return a sorted array that has the odd numbers in collatz sequence.
// The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined
// as follows: start with any positive integer n. Then each term is obtained from the 
// previous term as follows: if the previous term is even, the next term is one half of 
// the previous term. If the previous term is odd, the next term is 3 times the previous
// term plus 1. The conjecture is that no matter what value of n, the sequence will always reach 1.
// Note: 
// 1. Collatz(1) is [1].
// 2. returned array sorted in increasing order.
// For example:
// get_odd_collatz(5) returns [1, 5] # The collatz sequence for 5 is [5, 16, 8, 4, 2, 1], so the odd numbers are only 1, and 5.
// getOddCollatz(n: 5) == [1, 5]
func getOddCollatz(n: Int) -> [Int] {
    var arr = [Int]()
    var num = n
    while num != 1 {
        arr.append(num)
        if num % 2 == 0 {
            num /= 2
        } else {
            num = (num * 3) + 1
        }
    }
    arr.append(1)
    return arr.sorted()
}

// Given an array of positive integers, return the sum of the odd numbers in collatz sequence.
// The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined
// as follows: start with any positive integer n. Then each term is obtained from the 
// previous term as follows: if the previous term is even, the next term is one half of 
// the previous term. If the previous term is odd, the next term is 3 times the previous
// term plus 1. The conjecture is that no matter what value of n, the sequence will always reach 1.
// Note: 
// 1. Collatz(1) is [1].
// 2. returned array sorted in increasing order.
// For example:
// get_odd_collatz(5) returns [1, 5] # The collatz sequence for 5 is [5, 16, 8, 4, 2, 1], so the odd numbers are only 1, and 5.
// getOddCollatz(n: 5) == [1, 5]
func getOddCollatzSum(arr: [Int]) -> Int {
    var sum = 0
    for i in arr {
        if i % 2 != 0 {
            sum += i
        }
    }
    return sum
}

// Given an array of positive integers, return the sum of the even numbers in collatz sequence.
// The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined
// as follows: start with any positive integer n. Then each term is obtained from the 
// previous term as follows: if the previous term is even, the next term is one half of 
// the previous term. If the previous term is odd, the next term is 3 times the previous
// term plus 1. The conjecture is that no matter what value of n, the sequence will always reach 1.
// Note: 
// 1. Collatz(1) is [1].
// 2. returned array sorted in increasing order.
// For example:
// get_odd_collatz(5) returns [1, 5] # The collatz sequence for 5 is [5, 16, 8, 4, 2, 1], so the odd numbers are only 1, and 5.
// getOddCollatz(n: 5) == [1, 5]
func getEvenCollatzSum(arr: [Int]) -> Int {
    var sum = 0
    for i in arr {
        if i % 2 == 0 {
            sum += i
        }
    }
    return sum
}

// Given an array of positive integers, return the sum of the collatz sequence.
// The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined
// as follows: start with any positive integer n. Then each term is obtained from the 
// previous term as follows: if the previous term is even, the next term is one half of 
// the previous term. If the previous term is odd, the next term is 3 times the previous
// term plus 1. The conjecture is that no matter what value of n, the sequence will always reach 1.
// Note: 
// 1. Collatz(1) is [1].
// 2. returned array sorted in increasing order.
// For example:
// get_odd_collatz(5) returns [1, 5] # The collatz sequence for 5 is [5, 16, 8, 4, 2, 1], so the odd numbers are only 1, and 5.
// getOddCollatz(n: 5) == [1, 5]
func getCollatzSum(arr: [Int]) -> Int {
    var sum = 0
    for i in arr {
        sum += i
    }
    return sum
}

// Given an array of positive integers, return the sum of the collatz sequence.
// The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined
// as follows: start with any positive integer n. Then each term is obtained from the 
// previous
 // XCTAssertTrue failed

func getOddCollatz(n: Int) -> [Int] {
    var result = [Int]()
    var num = n
    while num != 1 {
        if num % 2 == 0 {
            num = num / 2
        } else {
            num = 3 * num + 1
        }
        result.append(num)
    }
    return result
}
```swift
// Given a positive integer n, return a sorted array that has the odd numbers in collatz sequence.
// The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined
// as follows: start with any positive integer n. Then each term is obtained from the 
// previous term as follows: if the previous term is even, the next term is one half of 
// the previous term. If the previous term is odd, the next term is 3 times the previous
// term plus 1. The conjecture is that no matter what value of n, the sequence will always reach 1.
// Note: 
// 1. Collatz(1) is [1].
// 2. returned array sorted in increasing order.
// For example:
// get_odd_collatz(5) returns [1, 5] # The collatz sequence for 5 is [5, 16, 8, 4, 2, 1], so the odd numbers are only 1, and 5.
// getOddCollatz(n: 5) == [1, 5]
func getOddCollatz(n: Int) -> [Int] {
    var result = [Int]()
    var num = n
    while num != 1 {
        if num % 2 == 0 {
            num = num / 2
        } else {
            num = 3 * num + 1
        }
        result.append(num)
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func getOddCollatz(n: Int) -> [Int] {
    var result = [Int]()
    var num = n
    while num != 1 {
        if num % 2 == 0 {
            num = num / 2
        } else {
            num = (3 * num) + 1
        }
        result.append(num)
    }
    return result
}
```swift
// Given a positive integer n, return a sorted array that has the odd numbers in collatz sequence.
// The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined
// as follows: start with any positive integer n. Then each term is obtained from the 
// previous term as follows: if the previous term is even, the next term is one half of 
// the previous term. If the previous term is odd, the next term is 3 times the previous
// term plus 1. The conjecture is that no matter what value of n, the sequence will always reach 1.
// Note: 
// 1. Collatz(1) is [1].
// 2. returned array sorted in increasing order.
// For example:
// get_odd_collatz(5) returns [1, 5] # The collatz sequence for 5 is [5, 16, 8, 4, 2, 1], so the odd numbers are only 1, and 5.
// getOddCollatz(n: 5) == [1, 5]
func getOddCollatz(n: Int) -> [Int] {
    var result = [Int]()
    var num = n
    while num != 1 {
        if num % 2 == 0 {
            num = num / 2
        } else {
            num = (3 * num) + 1
        }
        result.append(num)
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func getOddCollatz(n: Int) -> [Int] {
    var arr = [Int]()
    var num = n
    while num != 1 {
        arr.append(num)
        if num % 2 == 0 {
            num = num / 2
        } else {
            num = (num * 3) + 1
        }
    }
    arr.append(1)
    return arr
}
```swift
// Given a positive integer n, return a sorted array that has the odd numbers in collatz sequence.
// The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined
// as follows: start with any positive integer n. Then each term is obtained from the 
// previous term as follows: if the previous term is even, the next term is one half of 
// the previous term. If the previous term is odd, the next term is 3 times the previous
// term plus 1. The conjecture is that no matter what value of n, the sequence will always reach 1.
// Note: 
// 1. Collatz(1) is [1].
// 2. returned array sorted in increasing order.
// For example:
// get_odd_collatz(5) returns [1, 5] # The collatz sequence for 5 is [5, 16, 8, 4, 2, 1], so the odd numbers are only 1, and 5.
// getOddCollatz(n: 5) == [1, 5]
func getOddCollatz(n: Int) -> [Int] {
    var arr = [Int]()
    var num = n
    while num != 1 {
        arr.append(num)
        if num % 2 == 0 {
            num = num / 2
        } else {
            num = (num * 3) + 1
        }
    }
    arr.append(1)
    return arr
}
<|file_separator|>
 // XCTAssertTrue failed

func getOddCollatz(n: Int) -> [Int] {
    var result = [Int]()
    var current = n
    while current != 1 {
        if current % 2 == 0 {
            current /= 2
        } else {
            current = 3 * current + 1
        }
        result.append(current)
    }
    return result
}
```swift
// Given a positive integer n, return a sorted array that has the odd numbers in collatz sequence.
// The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined
// as follows: start with any positive integer n. Then each term is obtained from the 
// previous term as follows: if the previous term is even, the next term is one half of 
// the previous term. If the previous term is odd, the next term is 3 times the previous
// term plus 1. The conjecture is that no matter what value of n, the sequence will always reach 1.
// Note: 
// 1. Collatz(1) is [1].
// 2. returned array sorted in increasing order.
// For example:
// get_odd_collatz(5) returns [1, 5] # The collatz sequence for 5 is [5, 16, 8, 4, 2, 1], so the odd numbers are only 1, and 5.
// getOddCollatz(n: 5) == [1, 5]
func getOddCollatz(n: Int) -> [Int] {
    var result = [Int]()
    var current = n
    while current != 1 {
        if current % 2 == 0 {
            current /= 2
        } else {
            current = 3 * current + 1
        }
        result.append(current)
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func getOddCollatz(n: Int) -> [Int] {
    var result = [Int]()
    var num = n
    while num != 1 {
        if num % 2 == 0 {
            num /= 2
        } else {
            num = 3 * num + 1
        }
        result.append(num)
    }
    return result
}
```swift
// Given a positive integer n, return a sorted array that has the odd numbers in collatz sequence.
// The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined
// as follows: start with any positive integer n. Then each term is obtained from the 
// previous term as follows: if the previous term is even, the next term is one half of 
// the previous term. If the previous term is odd, the next term is 3 times the previous
// term plus 1. The conjecture is that no matter what value of n, the sequence will always reach 1.
// Note: 
// 1. Collatz(1) is [1].
// 2. returned array sorted in increasing order.
// For example:
// get_odd_collatz(5) returns [1, 5] # The collatz sequence for 5 is [5, 16, 8, 4, 2, 1], so the odd numbers are only 1, and 5.
// getOddCollatz(n: 5) == [1, 5]
func getOddCollatz(n: Int) -> [Int] {
    var result = [Int]()
    var num = n
    while num != 1 {
        if num % 2 == 0 {
            num /= 2
        } else {
            num = 3 * num + 1
        }
        result.append(num)
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func getOddCollatz(n: Int) -> [Int] {
    var collatz = [Int]()
    var num = n
    while num != 1 {
        collatz.append(num)
        if num % 2 == 0 {
            num = num / 2
        } else {
            num = 3 * num + 1
        }
    }
    collatz.append(1)
    return collatz.filter { $0 % 2 != 0 }
}
```swift
// Given a positive integer n, return a sorted array that has the odd numbers in collatz sequence.
// The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined
// as follows: start with any positive integer n. Then each term is obtained from the 
// previous term as follows: if the previous term is even, the next term is one half of 
// the previous term. If the previous term is odd, the next term is 3 times the previous
// term plus 1. The conjecture is that no matter what value of n, the sequence will always reach 1.
// Note: 
// 1. Collatz(1) is [1].
// 2. returned array sorted in increasing order.
// For example:
// get_odd_collatz(5) returns [1, 5] # The collatz sequence for 5 is [5, 16, 8, 4, 2, 1], so the odd numbers are only 1, and 5.
// getOddCollatz(n: 5) == [1, 5]
func getOddCollatz(n: Int) -> [Int] {
    var collatz = [Int]()
    var num = n
    while num != 1 {
        collatz.append(num)
        if num % 2 == 0 {
            num = num / 2
        } else {
            num = 3 * num + 1
        }
    }
    collatz.append(1)
    return collatz.filter { $0 % 2 != 0 }
}
<|file_separator|>
 // XCTAssertTrue failed

func getOddCollatz(n: Int) -> [Int] {
    var result = [Int]()
    var current = n
    while current != 1 {
        if current % 2 == 0 {
            current = current / 2
        } else {
            current = 3 * current + 1
        }
        result.append(current)
    }
    return result
}
```swift
// Given a positive integer n, return a sorted array that has the odd numbers in collatz sequence.
// The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined
// as follows: start with any positive integer n. Then each term is obtained from the 
// previous term as follows: if the previous term is even, the next term is one half of 
// the previous term. If the previous term is odd, the next term is 3 times the previous
// term plus 1. The conjecture is that no matter what value of n, the sequence will always reach 1.
// Note: 
// 1. Collatz(1) is [1].
// 2. returned array sorted in increasing order.
// For example:
// get_odd_collatz(5) returns [1, 5] # The collatz sequence for 5 is [5, 16, 8, 4, 2, 1], so the odd numbers are only 1, and 5.
// getOddCollatz(n: 5) == [1, 5]
func getOddCollatz(n: Int) -> [Int] {
    var result = [Int]()
    var current = n
    while current != 1 {
        if current % 2 == 0 {
            current = current / 2
        } else {
            current = 3 * current + 1
        }
        result.append(current)
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func getOddCollatz(n: Int) -> [Int] {
    var arr = [Int]()
    var num = n
    while num != 1 {
        arr.append(num)
        if num % 2 == 0 {
            num = num / 2
        } else {
            num = 3 * num + 1
        }
    }
    arr.append(1)
    return arr
}
```swift
// Given a positive integer n, return a sorted array that has the odd numbers in collatz sequence.
// The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined
// as follows: start with any positive integer n. Then each term is obtained from the 
// previous term as follows: if the previous term is even, the next term is one half of 
// the previous term. If the previous term is odd, the next term is 3 times the previous
// term plus 1. The conjecture is that no matter what value of n, the sequence will always reach 1.
// Note: 
// 1. Collatz(1) is [1].
// 2. returned array sorted in increasing order.
// For example:
// get_odd_collatz(5) returns [1, 5] # The collatz sequence for 5 is [5, 16, 8, 4, 2, 1], so the odd numbers are only 1, and 5.
// getOddCollatz(n: 5) == [1, 5]
func getOddCollatz(n: Int) -> [Int] {
    var arr = [Int]()
    var num = n
    while num != 1 {
        arr.append(num)
        if num % 2 == 0 {
            num = num / 2
        } else {
            num = 3 * num + 1
        }
    }
    arr.append(1)
    return arr
}
<|file_separator|>
 // XCTAssertTrue failed

func getOddCollatz(n: Int) -> [Int] {
    var result = [Int]()
    var num = n
    while num != 1 {
        if num % 2 == 0 {
            num = num / 2
        } else {
            num = 3 * num + 1
        }
        result.append(num)
    }
    return result
}
```swift
// Given a positive integer n, return a sorted array that has the odd numbers in collatz sequence.
// The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined
// as follows: start with any positive integer n. Then each term is obtained from the 
// previous term as follows: if the previous term is even, the next term is one half of 
// the previous term. If the previous term is odd, the next term is 3 times the previous
// term plus 1. The conjecture is that no matter what value of n, the sequence will always reach 1.
// Note: 
// 1. Collatz(1) is [1].
// 2. returned array sorted in increasing order.
// For example:
// get_odd_collatz(5) returns [1, 5] # The collatz sequence for 5 is [5, 16, 8, 4, 2, 1], so the odd numbers are only 1, and 5.
// getOddCollatz(n: 5) == [1, 5]
func getOddCollatz(n: Int) -> [Int] {
    var result = [Int]()
    var num = n
    while num != 1 {
        if num % 2 == 0 {
            num = num / 2
        } else {
            num = 3 * num + 1
        }
        result.append(num)
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func validDate(date: String) -> Bool {
    if date.count == 0 {
        return false
    }
    let dateArray = date.components(separatedBy: "-")
    if dateArray.count != 3 {
        return false
    }
    let month = Int(dateArray[0])
    let day = Int(dateArray[1])
    let year = Int(dateArray[2])
    if month == nil || day == nil || year == nil {
        return false
    }
    if month! < 1 || month! > 12 {
        return false
    }
    if day! < 1 || day! > 31 {
        return false
    }
    if month! == 1 || month! == 3 || month! == 5 || month! == 7 || month! == 8 || month! == 10 || month! == 12 {
        if day! > 31 {
            return false
        }
    }
    if month! == 4 || month! == 6 || month! == 9 || month! == 11 {
        if day! > 30 {
            return false
        }
    }
    if month! == 2 {
        if year! % 4 == 0 {
            if day! > 29 {
                return false
            }
        } else {
            if day! > 28 {
                return false
            }
        }
    }
    return true
}
```swift
// You have to write a function which validates a given date string and
// returns true if the date is valid otherwise false.
// The date is valid if all of the following rules are satisfied:
// 1. The date string is not empty.
// 2. The number of days is not less than 1 or higher than 31 days for months 1,3,5,7,8,10,12. And the number of days is not less than 1 or higher than 30 days for months 4,6,9,11. And, the number of days is not less than 1 or higher than 29 for the month 2.
// 3. The months should not be less than 1 or higher than 12.
// 4. The date should be in the format: mm-dd-yyyy
// validDate(date: "03-11-2000") == true
// validDate(date: "15-01-2012") == false
// validDate(date: "04-0-2040") == false
// validDate(date: "06-04-2020") == true
// validDate(date: "06/04/2020") == false
func validDate(date: String) -> Bool {
    if date.count == 0 {
        return false
    }
    let dateArray = date.components(separatedBy: "-")
    if dateArray.count != 3 {
        return false
    }
    let month = Int(dateArray[0])
    let day = Int(dateArray[1])
    let year = Int(dateArray[2])
    if month == nil || day == nil || year == nil {
        return false
    }
    if month! < 1 || month! > 12 {
        return false
    }
    if day! < 1 || day! > 31 {
        return false
    }
    if month! == 1 || month! == 3 || month! == 5 || month! == 7 || month! == 8 || month! == 10 || month! == 12 {
        if day! > 31 {
            return false
        }
    }
    if month! == 4 || month! == 6 || month! == 9 || month! == 11 {
        if day! > 30 {
            return false
        }
    }
    if month! == 2 {
        if year! % 4 == 0 {
            if day! > 29 {
                return false
            }
        } else {
            if day! > 28 {
                return false
            }
        }
    }
    return true
}
<|file_separator|>

func validDate(date: String) -> Bool {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "MM-dd-yyyy"
    if date.count == 10 {
        if let _ = dateFormatter.date(from: date) {
            return true
        }
    }
    return false
}
```swift
// You have to write a function which validates a given date string and
// returns true if the date is valid otherwise false.
// The date is valid if all of the following rules are satisfied:
// 1. The date string is not empty.
// 2. The number of days is not less than 1 or higher than 31 days for months 1,3,5,7,8,10,12. And the number of days is not less than 1 or higher than 30 days for months 4,6,9,11. And, the number of days is not less than 1 or higher than 29 for the month 2.
// 3. The months should not be less than 1 or higher than 12.
// 4. The date should be in the format: mm-dd-yyyy
// validDate(date: "03-11-2000") == true
// validDate(date: "15-01-2012") == false
// validDate(date: "04-0-2040") == false
// validDate(date: "06-04-2020") == true
// validDate(date: "06/04/2020") == false
func validDate(date: String) -> Bool {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "MM-dd-yyyy"
    if date.count == 10 {
        if let _ = dateFormatter.date(from: date) {
            return true
        }
    }
    return false
}
<|file_separator|>

func validDate(date: String) -> Bool {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "MM-dd-yyyy"
    if let _ = dateFormatter.date(from: date) {
        return true
    }
    return false
}
```swift
// You have to write a function which validates a given date string and
// returns true if the date is valid otherwise false.
// The date is valid if all of the following rules are satisfied:
// 1. The date string is not empty.
// 2. The number of days is not less than 1 or higher than 31 days for months 1,3,5,7,8,10,12. And the number of days is not less than 1 or higher than 30 days for months 4,6,9,11. And, the number of days is not less than 1 or higher than 29 for the month 2.
// 3. The months should not be less than 1 or higher than 12.
// 4. The date should be in the format: mm-dd-yyyy
// validDate(date: "03-11-2000") == true
// validDate(date: "15-01-2012") == false
// validDate(date: "04-0-2040") == false
// validDate(date: "06-04-2020") == true
// validDate(date: "06/04/2020") == false
func validDate(date: String) -> Bool {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "MM-dd-yyyy"
    if let _ = dateFormatter.date(from: date) {
        return true
    }
    return false
}
<|file_separator|>

func validDate(date: String) -> Bool {
    if date.isEmpty {
        return false
    }
    let dateArray = date.components(separatedBy: "-")
    if dateArray.count != 3 {
        return false
    }
    if let month = Int(dateArray[0]), let day = Int(dateArray[1]), let year = Int(dateArray[2]) {
        if month < 1 || month > 12 {
            return false
        }
        if day < 1 || day > 31 {
            return false
        }
        if month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12 {
            if day > 31 {
                return false
            }
        }
        if month == 4 || month == 6 || month == 9 || month == 11 {
            if day > 30 {
                return false
            }
        }
        if month == 2 {
            if day > 29 {
                return false
            }
        }
        if year < 1900 || year > 2100 {
            return false
        }
        return true
    }
    return false
}
```swift
// You have to write a function which validates a given date string and
// returns true if the date is valid otherwise false.
// The date is valid if all of the following rules are satisfied:
// 1. The date string is not empty.
// 2. The number of days is not less than 1 or higher than 31 days for months 1,3,5,7,8,10,12. And the number of days is not less than 1 or higher than 30 days for months 4,6,9,11. And, the number of days is not less than 1 or higher than 29 for the month 2.
// 3. The months should not be less than 1 or higher than 12.
// 4. The date should be in the format: mm-dd-yyyy
// validDate(date: "03-11-2000") == true
// validDate(date: "15-01-2012") == false
// validDate(date: "04-0-2040") == false
// validDate(date: "06-04-2020") == true
// validDate(date: "06/04/2020") == false
func validDate(date: String) -> Bool {
    if date.isEmpty {
        return false
    }
    let dateArray = date.components(separatedBy: "-")
    if dateArray.count != 3 {
        return false
    }
    if let month = Int(dateArray[0]), let day = Int(dateArray[1]), let year = Int(dateArray[2]) {
        if month < 1 || month > 12 {
            return false
        }
        if day < 1 || day > 31 {
            return false
        }
        if month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12 {
            if day > 31 {
                return false
            }
        }
        if month == 4 || month == 6 || month == 9 || month == 11 {
            if day > 30 {
                return false
            }
        }
        if month == 2 {
            if day > 29 {
                return false
            }
        }
        if year < 1900 || year > 2100 {
            return false
        }
        return true
    }
    return false
}
<|file_separator|>

func validDate(date: String) -> Bool {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "MM-dd-yyyy"
    if date.count == 10 {
        if let _ = dateFormatter.date(from: date) {
            return true
        }
    }
    return false
}
```swift
// You have to write a function which validates a given date string and
// returns true if the date is valid otherwise false.
// The date is valid if all of the following rules are satisfied:
// 1. The date string is not empty.
// 2. The number of days is not less than 1 or higher than 31 days for months 1,3,5,7,8,10,12. And the number of days is not less than 1 or higher than 30 days for months 4,6,9,11. And, the number of days is not less than 1 or higher than 29 for the month 2.
// 3. The months should not be less than 1 or higher than 12.
// 4. The date should be in the format: mm-dd-yyyy
// validDate(date: "03-11-2000") == true
// validDate(date: "15-01-2012") == false
// validDate(date: "04-0-2040") == false
// validDate(date: "06-04-2020") == true
// validDate(date: "06/04/2020") == false
func validDate(date: String) -> Bool {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "MM-dd-yyyy"
    if date.count == 10 {
        if let _ = dateFormatter.date(from: date) {
            return true
        }
    }
    return false
}
<|file_separator|>

func validDate(date: String) -> Bool {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "MM-dd-yyyy"
    if date.isEmpty {
        return false
    }
    if let _ = Int(date) {
        return false
    }
    if let _ = dateFormatter.date(from: date) {
        return true
    }
    return false
}
```swift
// You have to write a function which validates a given date string and
// returns true if the date is valid otherwise false.
// The date is valid if all of the following rules are satisfied:
// 1. The date string is not empty.
// 2. The number of days is not less than 1 or higher than 31 days for months 1,3,5,7,8,10,12. And the number of days is not less than 1 or higher than 30 days for months 4,6,9,11. And, the number of days is not less than 1 or higher than 29 for the month 2.
// 3. The months should not be less than 1 or higher than 12.
// 4. The date should be in the format: mm-dd-yyyy
// validDate(date: "03-11-2000") == true
// validDate(date: "15-01-2012") == false
// validDate(date: "04-0-2040") == false
// validDate(date: "06-04-2020") == true
// validDate(date: "06/04/2020") == false
func validDate(date: String) -> Bool {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "MM-dd-yyyy"
    if date.isEmpty {
        return false
    }
    if let _ = Int(date) {
        return false
    }
    if let _ = dateFormatter.date(from: date) {
        return true
    }
    return false
}
<|file_separator|>

func validDate(date: String) -> Bool {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "MM-dd-yyyy"
    if dateFormatter.date(from: date) != nil {
        return true
    }
    return false
}
```swift
// You have to write a function which validates a given date string and
// returns true if the date is valid otherwise false.
// The date is valid if all of the following rules are satisfied:
// 1. The date string is not empty.
// 2. The number of days is not less than 1 or higher than 31 days for months 1,3,5,7,8,10,12. And the number of days is not less than 1 or higher than 30 days for months 4,6,9,11. And, the number of days is not less than 1 or higher than 29 for the month 2.
// 3. The months should not be less than 1 or higher than 12.
// 4. The date should be in the format: mm-dd-yyyy
// validDate(date: "03-11-2000") == true
// validDate(date: "15-01-2012") == false
// validDate(date: "04-0-2040") == false
// validDate(date: "06-04-2020") == true
// validDate(date: "06/04/2020") == false
func validDate(date: String) -> Bool {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "MM-dd-yyyy"
    if dateFormatter.date(from: date) != nil {
        return true
    }
    return false
}
<|file_separator|>

func validDate(date: String) -> Bool {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "MM-dd-yyyy"
    if let _ = dateFormatter.date(from: date) {
        return true
    }
    return false
}
```swift
// You have to write a function which validates a given date string and
// returns true if the date is valid otherwise false.
// The date is valid if all of the following rules are satisfied:
// 1. The date string is not empty.
// 2. The number of days is not less than 1 or higher than 31 days for months 1,3,5,7,8,10,12. And the number of days is not less than 1 or higher than 30 days for months 4,6,9,11. And, the number of days is not less than 1 or higher than 29 for the month 2.
// 3. The months should not be less than 1 or higher than 12.
// 4. The date should be in the format: mm-dd-yyyy
// validDate(date: "03-11-2000") == true
// validDate(date: "15-01-2012") == false
// validDate(date: "04-0-2040") == false
// validDate(date: "06-04-2020") == true
// validDate(date: "06/04/2020") == false
func validDate(date: String) -> Bool {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "MM-dd-yyyy"
    if let _ = dateFormatter.date(from: date) {
        return true
    }
    return false
}
<|file_separator|>

func validDate(date: String) -> Bool {
    let dateArray = date.split(separator: "-")
    if dateArray.count != 3 {
        return false
    }
    let month = Int(dateArray[0])
    let day = Int(dateArray[1])
    let year = Int(dateArray[2])
    if month == nil || day == nil || year == nil {
        return false
    }
    if month! < 1 || month! > 12 {
        return false
    }
    if day! < 1 || day! > 31 {
        return false
    }
    if month! == 1 || month! == 3 || month! == 5 || month! == 7 || month! == 8 || month! == 10 || month! == 12 {
        if day! > 31 {
            return false
        }
    }
    if month! == 4 || month! == 6 || month! == 9 || month! == 11 {
        if day! > 30 {
            return false
        }
    }
    if month! == 2 {
        if year! % 4 == 0 {
            if day! > 29 {
                return false
            }
        } else {
            if day! > 28 {
                return false
            }
        }
    }
    return true
}
```swift
// You have to write a function which validates a given date string and
// returns true if the date is valid otherwise false.
// The date is valid if all of the following rules are satisfied:
// 1. The date string is not empty.
// 2. The number of days is not less than 1 or higher than 31 days for months 1,3,5,7,8,10,12. And the number of days is not less than 1 or higher than 30 days for months 4,6,9,11. And, the number of days is not less than 1 or higher than 29 for the month 2.
// 3. The months should not be less than 1 or higher than 12.
// 4. The date should be in the format: mm-dd-yyyy
// validDate(date: "03-11-2000") == true
// validDate(date: "15-01-2012") == false
// validDate(date: "04-0-2040") == false
// validDate(date: "06-04-2020") == true
// validDate(date: "06/04/2020") == false
func validDate(date: String) -> Bool {
    let dateArray = date.split(separator: "-")
    if dateArray.count != 3 {
        return false
    }
    let month = Int(dateArray[0])
    let day = Int(dateArray[1])
    let year = Int(dateArray[2])
    if month == nil || day == nil || year == nil {
        return false
    }
    if month! < 1 || month! > 12 {
        return false
    }
    if day! < 1 || day! > 31 {
        return false
    }
    if month! == 1 || month! == 3 || month! == 5 || month! == 7 || month! == 8 || month! == 10 || month! == 12 {
        if day! > 31 {
            return false
        }
    }
    if month! == 4 || month! == 6 || month! == 9 || month! == 11 {
        if day! > 30 {
            return false
        }
    }
    if month! == 2 {
        if year! % 4 == 0 {
            if day! > 29 {
                return false
            }
        } else {
            if day! > 28 {
                return false
            }
        }
    }
    return true
}
<|file_separator|>

func validDate(date: String) -> Bool {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "MM-dd-yyyy"
    if date.isEmpty {
        return false
    }
    if let _ = dateFormatter.date(from: date) {
        return true
    }
    return false
}
```swift
// You have to write a function which validates a given date string and
// returns true if the date is valid otherwise false.
// The date is valid if all of the following rules are satisfied:
// 1. The date string is not empty.
// 2. The number of days is not less than 1 or higher than 31 days for months 1,3,5,7,8,10,12. And the number of days is not less than 1 or higher than 30 days for months 4,6,9,11. And, the number of days is not less than 1 or higher than 29 for the month 2.
// 3. The months should not be less than 1 or higher than 12.
// 4. The date should be in the format: mm-dd-yyyy
// validDate(date: "03-11-2000") == true
// validDate(date: "15-01-2012") == false
// validDate(date: "04-0-2040") == false
// validDate(date: "06-04-2020") == true
// validDate(date: "06/04/2020") == false
func validDate(date: String) -> Bool {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "MM-dd-yyyy"
    if date.isEmpty {
        return false
    }
    if let _ = dateFormatter.date(from: date) {
        return true
    }
    return false
}
<|file_separator|>

extension Int: Error {

}

extension Int: Error {}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: Implement this method
}

func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: Implement this method
}
```swift
extension Int: Error {}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: Implement this method
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: Implement this method
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: Implement this method
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: Implement this method
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: Implement this method
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: Implement this method
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO
extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'
func splitWords(txt: String) -> Result<[String], Int> { // invalid redeclaration of 'splitWords(txt:)'

extension Int: Error {

}

extension Int: Error {}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    var result = [String]()
    var odd = 0
    var even = 0
    var last = ""
    for char in txt {
        if char == " " {
            if last != "" {
                result.append(last)
                last = ""
            }
        } else if char == "," {
            if last != "" {
                result.append(last)
                last = ""
            }
            result.append(String(char))
        } else {
            if char.isLowercase {
                odd += 1
            } else {
                even += 1
            }
            last += String(char)
        }
    }
    if last != "" {
        result.append(last)
    }
    if odd == 0 && even == 0 {
        return .failure(odd)
    }
    return .success(result)
}

func splitWords2(txt: String) -> Result<[String], Int> {
    var result = [String]()
    var odd = 0
    var even = 0
    var last = ""
    for char in txt {
        if char == " " {
            if last != "" {
                result.append(last)
                last = ""
            }
        } else if char == "," {
            if last != "" {
                result.append(last)
                last = ""
            }
            result.append(String(char))
        } else {
            if char.isLowercase {
                odd += 1
            } else {
                even += 1
            }
            last += String(char)
        }
    }
    if last != "" {
        result.append(last)
    }
    if odd == 0 && even == 0 {
        return .failure(odd)
    }
    return .success(result)
}

func splitWords3(txt: String) -> Result<[String], Int> {
    var result = [String]()
    var odd = 0
    var even = 0
    var last = ""
    for char in txt {
        if char == " " {
            if last != "" {
                result.append(last)
                last = ""
            }
        } else if char == "," {
            if last != "" {
                result.append(last)
                last = ""
            }
            result.append(String(char))
        } else {
            if char.isLowercase {
                odd += 1
            } else {
                even += 1
            }
            last += String(char)
        }
    }
    if last != "" {
        result.append(last)
    }
    if odd == 0 && even == 0 {
        return .failure(odd)
    }
    return .success(result)
}
```swift
extension Int: Error {}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    var result = [String]()
    var odd = 0
    var even = 0
    var last = ""
    for char in txt {
        if char == " " {
            if last != "" {
                result.append(last)
                last = ""
            }
        } else if char == "," {
            if last != "" {
                result.append(last)
                last = ""
            }
            result.append(String(char))
        } else {
            if char.isLowercase {
                odd += 1
            } else {
                even += 1
            }
            last += String(char)
        }
    }
    if last != "" {
        result.append(last)
    }
    if odd == 0 && even == 0 {
        return .failure(odd)
    }
    return .success(result)
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords2(txt: String) -> Result<[String], Int> {
    var result = [String]()
    var odd = 0
    var even = 0
    var last = ""
    for char in txt {
        if char == " " {
            if last != "" {
                result.append(last)
                last = ""
            }
        } else if char == "," {
            if last != "" {
                result.append(last)
                last = ""
            }
            result.append(String(char))
        } else {
            if char.isLowercase {
                odd += 1
            } else {
                even += 1
            }
            last += String(char)
        }
    }
    if last != "" {
        result.append(last)
    }
    if odd == 0 && even == 0 {
        return .failure(odd)
    }
    return .success(result)
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords3(txt: String) -> Result<[String], Int> {
    var result = [String]()
    var odd = 0
    var even = 0
    var last = ""
    for char in txt {
        if char == " " {
            if last != "" {
                result.append(last)
                last = ""
            }
        } else if char == "," {
            if last != "" {
                result.append(last)
                last = ""
            }
            result.append(String(char))
        } else {
            if char.isLowercase {
                odd += 1
            } else {
                even += 1
            }
            last += String(char)
        }
    }
    if last != "" {
        result.append(last)
    }
    if odd == 0 && even == 0 {
        return .failure(odd)
    }
    return .success(result)
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') =
extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'

extension Int: Error {

}

extension Int: Error {}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    let words = txt.split(separator: " ")
    if words.contains(where: { $0.contains(" ") }) {
        return .failure(3)
    }
    if words.contains(where: { $0.contains(",") }) {
        return .failure(3)
    }
    let odd = words.filter { $0.count % 2 == 1 }.map { $0.lowercased() }.sorted { $0 < $1 }
    return .success(odd)
}

func pairsSum(arr: [Int], value: Int) -> Result<Int, Int> {
    var pairs = 0
    for i in 0..<arr.count {
        for j in i+1..<arr.count {
            if arr[i] + arr[j] == value {
                pairs += 1
            }
        }
    }
    return .success(pairs)
}
```swift
extension Int: Error {}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    let words = txt.split(separator: " ")
    if words.contains(where: { $0.contains(" ") }) {
        return .failure(3)
    }
    if words.contains(where: { $0.contains(",") }) {
        return .failure(3)
    }
    let odd = words.filter { $0.count % 2 == 1 }.map { $0.lowercased() }.sorted { $0 < $1 }
    return .success(odd)
}

// Given an array of integers, return the number of pairs of integers that sum to a given value.
// Examples
// pairsSum(arr: [1,2,3,4,5,6,7,8,9,10], value: 10) == .success(4)
// pairsSum(arr: [1,2,3,4,5,6,7,8,9,10], value: 11) == .failure(1)
// pairsSum(arr: [1,2,3,4,5,6,7,8,9,10], value: 12) == .failure(2)
// pairsSum(arr: [1,2,3,4,5,6,7,8,9,10], value: 13) == .failure(3)
// pairsSum(arr: [1,2,3,4,5,6,7,8,9,10], value: 14) == .failure(4)
// pairsSum(arr: [1,2,3,4,5,6,7,8,9,10], value: 15) == .failure(5)
// pairsSum(arr: [1,2,3,4,5,6,7,8,9,10], value: 16) == .failure(6)
// pairsSum(arr: [1,2,3,4,5,6,7,8,9,10], value: 17) == .failure(7)
// pairsSum(arr: [1,2,3,4,5,6,7,8,9,10], value: 18) == .failure(8)
// pairsSum(arr: [1,2,3,4,5,6,7,8,9,10], value: 19) == .failure(9)
// pairsSum(arr: [1,2,3,4,5,6,7,8,9,10], value: 20) == .failure(10)
func pairsSum(arr: [Int], value: Int) -> Result<Int, Int> {
    var pairs = 0
    for i in 0..<arr.count {
        for j in i+1..<arr.count {
            if arr[i] + arr[j] == value {
                pairs += 1
            }
        }
    }
    return .success(pairs)
}

// Given an array of integers, return the number of pairs of integers that sum to a given value.
// Examples
// pairsSum(arr: [1,2,3,4,5,6,7,8,9,10], value: 10) == .success(4)
// pairsSum(arr: [1,2,3,4,5,6,7,8,9,10], value: 11) == .failure(1)
// pairsSum(arr: [1,2,3,4,5,6,7,8,9,10], value: 12) == .failure(2)
// pairsSum(arr: [1,2,3,4,5,6,7,8,9,10], value: 13) == .failure(3)
// pairsSum(arr: [1,2,3,4,5,6,7,8,9,10], value: 14) == .failure(4)
// pairsSum(arr: [1,2,3,4,5,6,7,8,9,10], value: 15) == .failure(5)
// pairsSum(arr: [1,2,3,4,5,6,7,8,9,10], value: 16) == .failure(6)
// pairsSum(arr: [1,2,3,4,5,6,7,8,
extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'

extension Int: Error {

}

extension Int: Error {}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: implement
    return .failure(0)
}

func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: implement
    return .failure(0)
}
```swift
extension Int: Error {}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: implement
    return .failure(0)
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: implement
    return .failure(0)
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: implement
    return .failure(0)
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: implement
    return .failure(0)
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: implement
    return .failure(0)
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: implement
    return .failure(0)
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'
func splitWords(txt: String) -> Result<[String], Int> { // invalid redeclaration of 'splitWords(txt:)'

extension Int: Error {

}
```swift
extension Int: Error {}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    let words = txt.split(separator: " ")
    let wordsCount = words.count
    let wordsWithOddOrder = words.filter { $0.count % 2 != 0 }
    let wordsWithOddOrderCount = wordsWithOddOrder.count
    let wordsWithOddOrderCountWithOddOrder = wordsWithOddOrder.filter { $0.count % 2 != 0 }
    let wordsWithOddOrderCountWithOddOrderCount = wordsWithOddOrderCountWithOddOrder.count
    let wordsWithOddOrderCountWithOddOrderCountWithOddOrder = wordsWithOddOrderCountWithOddOrderCount.count
    let wordsWithOddOrderCountWithOddOrderCountWithOddOrderCount = wordsWithOddOrderCountWithOddOrderCountWithOddOrder.count
    let wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCount = wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountWithOddOrder.count
    let wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrder = wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountWithOddOrderCount.count
    let wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCount = wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountWithOddOrderCountCount.count
    let wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCount = wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCount.count
    let wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCount = wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCount.count
    let wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCount = wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCount.count
    let wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCount = wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCount.count
    let wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCountCount = wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCountCount.count
    let wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCountCountCount = wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCountCountCountCount.count
    let wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCountCountCountCount = wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCountCountCountCountCount.count
    let wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCountCountCountCountCount = wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCountCountCountCountCountCount.count
    let wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCountCountCountCountCountCount = wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCountCountCountCountCountCountCount.count
    let wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCountCountCountCountCountCountCount = wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCountCountCountCountCountCountCountCount.count
    let wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCountCountCountCountCountCountCountCount = wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCountCountCountCountCountCountCountCountCount.count
    let wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCountCountCountCountCountCountCountCountCount = wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCountCountCountCountCountCountCountCountCountCount.count
    let wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCountCountCountCountCountCountCountCountCountCount = wordsWithOddOrderCountWithOddOrderCountWithOddOrderCountCountWithOddOrderCountCountCountCountCountCountCountCountCountCountCountCountCountCountCount.
XCTAssertTrue(splitWords(txt: "Hello world!") == .success(["Hello", "world!"])) // cannot find 'splitWords' in scope
XCTAssertTrue(splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])) // cannot find 'splitWords' in scope
XCTAssertTrue(splitWords(txt: "Hello world,!") == .success(["Hello", "world,!"])) // cannot find 'splitWords' in scope
XCTAssertTrue(splitWords(txt: "Hello,Hello,world !") == .success(["Hello,Hello,world", "!"])) // cannot find 'splitWords' in scope
XCTAssertTrue(splitWords(txt: "abcdef") == .failure(3)) // cannot find 'splitWords' in scope
XCTAssertTrue(splitWords(txt: "aaabb") == .failure(2)) // cannot find 'splitWords' in scope
XCTAssertTrue(splitWords(txt: "aaaBb") == .failure(1)) // cannot find 'splitWords' in scope
XCTAssertTrue(splitWords(txt: "") == .failure(0)) // cannot find 'splitWords' in scope

extension Int: Error {

}

extension Int: Error {}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: Implement this function
}

func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: Implement this function
}
```swift
extension Int: Error {}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: Implement this function
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: Implement this function
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: Implement this function
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: Implement this function
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: Implement this function
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: Implement this function
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO
extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'
func splitWords(txt: String) -> Result<[String], Int> { // invalid redeclaration of 'splitWords(txt:)'

extension Int: Error {

}

extension Int: Error {}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: implement
    return .failure(3)
}

func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: implement
    return .failure(3)
}
```swift
extension Int: Error {}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: implement
    return .failure(3)
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: implement
    return .failure(3)
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: implement
    return .failure(3)
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: implement
    return .failure(3)
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: implement
    return .failure(3)
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // TODO: implement
    return .failure(3)
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'
func splitWords(txt: String) -> Result<[String], Int> { // invalid redeclaration of 'splitWords(txt:)'

extension Int: Error {

}

extension Int: Error {}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // your code here
}

func splitWords(txt: String) -> Result<[String], Int> {
    // your code here
}
```swift
extension Int: Error {}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // your code here
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // your code here
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // your code here
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // your code here
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // your code here
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // your code here
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    // your code here
}

// Given a string of words,
extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'
func splitWords(txt: String) -> Result<[String], Int> { // invalid redeclaration of 'splitWords(txt:)'

extension Int: Error {

}

extension Int: Error {}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    let words = txt.split(separator: " ")
    let letters = words.map { $0.lowercased() }
    let lettersOdd = letters.filter { $0.firstIndex(where: { $0.isLowercase }) % 2 == 1 }
    let lettersEven = letters.filter { $0.firstIndex(where: { $0.isLowercase }) % 2 == 0 }
    let lettersOddCount = lettersOdd.count
    let lettersEvenCount = lettersEven.count
    if lettersOddCount == 0 && lettersEvenCount == 0 {
        return .failure(letters.count)
    }
    if lettersOddCount == 0 {
        return .success(lettersEven)
    }
    if lettersEvenCount == 0 {
        return .success(lettersOdd)
    }
    return .failure(lettersOddCount)
}

func adjacentElementsProduct(arr: [Int]) -> Int {
    var max = 0
    for i in 0..<arr.count - 1 {
        let product = arr[i] * arr[i + 1]
        if product % 2 == 0 {
            max = max > product ? max : product
        }
    }
    return max
}

func addBorder(arr: [[String]]) -> [[String]] {
    var result = [String]()
    for _ in 0..<arr[0].count + 2 {
        result.append("*")
    }
    for i in 0..<arr.count {
        result.append("*" + arr[i].joined(separator: "*") + "*")
    }
    return result
}
```swift
extension Int: Error {}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    let words = txt.split(separator: " ")
    let letters = words.map { $0.lowercased() }
    let lettersOdd = letters.filter { $0.firstIndex(where: { $0.isLowercase }) % 2 == 1 }
    let lettersEven = letters.filter { $0.firstIndex(where: { $0.isLowercase }) % 2 == 0 }
    let lettersOddCount = lettersOdd.count
    let lettersEvenCount = lettersEven.count
    if lettersOddCount == 0 && lettersEvenCount == 0 {
        return .failure(letters.count)
    }
    if lettersOddCount == 0 {
        return .success(lettersEven)
    }
    if lettersEvenCount == 0 {
        return .success(lettersOdd)
    }
    return .failure(lettersOddCount)
}

// Given an array of integers, return the number of times the sum of adjacent elements in the array is even.
// Examples
// adjacentElementsProduct([2, 4, 6, 8, 10]) == 16
// adjacentElementsProduct([2, 4, 6, 8, 10, 12]) == 20
// adjacentElementsProduct([2, 4, 6, 8, 10, 12, 14]) == 24
func adjacentElementsProduct(arr: [Int]) -> Int {
    var max = 0
    for i in 0..<arr.count - 1 {
        let product = arr[i] * arr[i + 1]
        if product % 2 == 0 {
            max = max > product ? max : product
        }
    }
    return max
}

// Given an array of integers, return the number of times the sum of adjacent elements in the array is odd.
// Examples
// addBorder([["abc"], ["ded"]]) == [["*****"], ["*abc*"], ["*ded*"], ["*****"]]
// addBorder([["abc", "ded"]]) == [["*****", "*****"], ["*abc*", "*ded*"], ["*****", "*****"]]
func addBorder(arr: [[String]]) -> [[String]] {
    var result = [String]()
    for _ in 0..<arr[0].count + 2 {
        result.append("*")
    }
    for i in 0..<arr.count {
        result.append("*" + arr[i].joined(separator: "*") + "*")
    }
    return result
}

// Given an array of integers, return the number of times the sum of adjacent elements in the array is even.
// Examples
// addBorder([["abc"], ["ded"]]) == [["*****"], ["*abc*"], ["*ded*"], ["*****"]]
// addBorder([["abc", "ded"]]) == [["*****", "*****"], ["*abc*", "*ded*"], ["*****", "*****"]]
func addBorder(arr: [[String]]) -> [[String]] {
    var result = [String]()
    for _ in 0..<arr[0].count + 2 {
        result.append("*")
    }
    for i in 0..<arr.count {
        result.append("*" + arr[i].joined(separator: "*") + "*")
    }
    return result
}

// Given an array of integers, return the number of times the sum of adjacent elements in the array is odd.
// Examples
// addBorder([["abc"], ["ded"]]) == [["*****"], ["*abc*"], ["*ded*"], ["*****"]]
// addBorder([["abc", "ded"]]) == [["*****", "*****"], ["*abc*", "*ded*"], ["*****", "*****"]]
func addBorder(arr: [[String]]) -> [[String]] {
    var result = [String]()
    for _ in 0..<arr[0].count + 2 {
        result.append("*")
    }
    for i in 0..<arr.count {
        result.append("*" + arr[i].joined(separator: "*") + "*")
    }
    return result
}

// Given an array of integers, return the number of times the sum of adjacent elements in the array is odd.
// Examples
// addBorder([["abc"], ["ded"]]) == [["*****"], ["*abc*"], ["*ded*"], ["*****"]]
// addBorder([["abc", "ded"]]) == [
extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'
let lettersOdd = letters.filter { $0.firstIndex(where: { $0.isLowercase }) % 2 == 1 } // cannot convert value of type 'String.Index?' to expected argument type 'Int'
let lettersEven = letters.filter { $0.firstIndex(where: { $0.isLowercase }) % 2 == 0 } // cannot convert value of type 'String.Index?' to expected argument type 'Int'
return result // cannot convert return expression of type '[String]' to return type '[[String]]'

extension Int: Error {

}

extension Int: Error {}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    let words = txt.split(separator: " ")
    let chars = txt.split(separator: ",")
    let oddChars = chars.filter { $0.isLowercase && $0.firstIndex(of: "a")! % 2 == 1 }
    let oddCharsCount = oddChars.count
    return .success(words)
}

func splitWords2(txt: String) -> Result<[String], Int> {
    let words = txt.split(separator: " ")
    let chars = txt.split(separator: ",")
    let oddChars = chars.filter { $0.isLowercase && $0.firstIndex(of: "a")! % 2 == 1 }
    let oddCharsCount = oddChars.count
    return .success(words)
}

func splitWords3(txt: String) -> Result<[String], Int> {
    let words = txt.split(separator: " ")
    let chars = txt.split(separator: ",")
    let oddChars = chars.filter { $0.isLowercase && $0.firstIndex(of: "a")! % 2 == 1 }
    let oddCharsCount = oddChars.count
    return .success(words)
}

func splitWords4(txt: String) -> Result<[String], Int> {
    let words = txt.split(separator: " ")
    let chars = txt.split(separator: ",")
    let oddChars = chars.filter { $0.isLowercase && $0.firstIndex(of: "a")! % 2 == 1 }
    let oddCharsCount = oddChars.count
    return .success(words)
}
```swift
extension Int: Error {}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
    let words = txt.split(separator: " ")
    let chars = txt.split(separator: ",")
    let oddChars = chars.filter { $0.isLowercase && $0.firstIndex(of: "a")! % 2 == 1 }
    let oddCharsCount = oddChars.count
    return .success(words)
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords2(txt: String) -> Result<[String], Int> {
    let words = txt.split(separator: " ")
    let chars = txt.split(separator: ",")
    let oddChars = chars.filter { $0.isLowercase && $0.firstIndex(of: "a")! % 2 == 1 }
    let oddCharsCount = oddChars.count
    return .success(words)
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords3(txt: String) -> Result<[String], Int> {
    let words = txt.split(separator: " ")
    let chars = txt.split(separator: ",")
    let oddChars = chars.filter { $0.isLowercase && $0.firstIndex(of: "a")! % 2 == 1 }
    let oddCharsCount = oddChars.count
    return .success(words)
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords4(txt: String) -> Result<[String], Int> {
    let words = txt.split(separator: " ")
    let chars = txt.split(separator: ",")
    let oddChars = chars.filter { $0.isLowercase && $0.firstIndex(of: "a")! % 2 == 1 }
    let oddCharsCount = oddChars.count
    return .success(words)
}

// Given a string of words, return an array of words split on whitespace, if no whitespaces exists in the text you
// should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the
// alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25
// Examples
// splitWords(txt: "Hello world!") == .success(["Hello", "world!"])
// splitWords(txt: "Hello,world!") == .success(["Hello", "world!"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords5(txt: String) -> Result<[String], Int> {
    let words = txt.split(separator: " ")
    let chars = txt.split(separator: ",")
    let oddChars = chars.filter { $0.isLowercase && $0.firstIndex
extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'
let oddChars = chars.filter { $0.isLowercase && $0.firstIndex(of: "a")! % 2 == 1 } // trailing closure passed to parameter of type 'Predicate<String.SubSequence>' (aka 'Predicate<Substring>') that does not accept a closure
return .success(words) // cannot convert value of type '[String.SubSequence]' (aka 'Array<Substring>') to expected argument type '[String]'
let oddChars = chars.filter { $0.isLowercase && $0.firstIndex(of: "a")! % 2 == 1 } // trailing closure passed to parameter of type 'Predicate<String.SubSequence>' (aka 'Predicate<Substring>') that does not accept a closure
return .success(words) // cannot convert value of type '[String.SubSequence]' (aka 'Array<Substring>') to expected argument type '[String]'
let oddChars = chars.filter { $0.isLowercase && $0.firstIndex(of: "a")! % 2 == 1 } // trailing closure passed to parameter of type 'Predicate<String.SubSequence>' (aka 'Predicate<Substring>') that does not accept a closure
return .success(words) // cannot convert value of type '[String.SubSequence]' (aka 'Array<Substring>') to expected argument type '[String]'
let oddChars = chars.filter { $0.isLowercase && $0.firstIndex(of: "a")! % 2 == 1 } // trailing closure passed to parameter of type 'Predicate<String.SubSequence>' (aka 'Predicate<Substring>') that does not accept a closure
return .success(words) // cannot convert value of type '[String.SubSequence]' (aka 'Array<Substring>') to expected argument type '[String]'

func isSorted(lst: [Int]) -> Bool {
  for i in 0..<lst.count-1 {
    if lst[i] > lst[i+1] {
      return false
    }
  }
  return true
}

func reverse(str: String) -> String {
  var result = ""
  for i in 0..<str.count {
    result = str[str.index(str.endIndex, offsetBy: -1-i)] + result
  }
  return result
}

func sum(lst: [Int]) -> Int {
  var result = 0
  for i in lst {
    result += i
  }
  return result
}

func product(lst: [Int]) -> Int {
  var result = 1
  for i in lst {
    result *= i
  }
  return result
}
```swift
// Given an array of numbers, return whether or not they are sorted
// in ascending order. If array has more than 1 duplicate of the same
// number, return false. Assume no negative numbers and only integers.
// Examples
// isSorted(lst: [5]) == true
// isSorted(lst: [1, 2, 3, 4, 5]) == true
// isSorted(lst: [1, 3, 2, 4, 5]) == false
// isSorted(lst: [1, 2, 3, 4, 5, 6]) == true
// isSorted(lst: [1, 2, 3, 4, 5, 6, 7]) == true
// isSorted(lst: [1, 3, 2, 4, 5, 6, 7]) == false
// isSorted(lst: [1, 2, 2, 3, 3, 4]) == true
// isSorted(lst: [1, 2, 2, 2, 3, 4]) == false
func isSorted(lst: [Int]) -> Bool {
  for i in 0..<lst.count-1 {
    if lst[i] > lst[i+1] {
      return false
    }
  }
  return true
}

// Given a string, return a new string with the same letters, but in
// reverse order. Assume no punctuation or spaces.
// Examples
// reverse("hello") == "olleh"
// reverse("hello!") == "!olleh"
// reverse("hello!") == "!olleh"
// reverse("hello!") == "!olleh"
func reverse(str: String) -> String {
  var result = ""
  for i in 0..<str.count {
    result = str[str.index(str.endIndex, offsetBy: -1-i)] + result
  }
  return result
}

// Given an array of numbers, return the sum of all the numbers.
// Examples
// sum(lst: [1, 2, 3, 4, 5]) == 15
// sum(lst: [1, 2, 3, 4, 5, 6]) == 21
// sum(lst: [1, 2, 3, 4, 5, 6, 7]) == 28
// sum(lst: [1, 2, 3, 4, 5, 6, 7, 8]) == 36
// sum(lst: [1, 2, 3, 4, 5, 6, 7, 8, 9]) == 45
// sum(lst: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 55
func sum(lst: [Int]) -> Int {
  var result = 0
  for i in lst {
    result += i
  }
  return result
}

// Given an array of numbers, return the product of all the numbers.
// Examples
// product(lst: [1, 2, 3, 4, 5]) == 120
// product(lst: [1, 2, 3, 4, 5, 6]) == 720
// product(lst: [1, 2, 3, 4, 5, 6, 7]) == 5040
// product(lst: [1, 2, 3, 4, 5, 6, 7, 8]) == 40320
// product(lst: [1, 2, 3, 4, 5, 6, 7, 8, 9]) == 362880
// product(lst: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 3628800
func product(lst: [Int]) -> Int {
  var result = 1
  for i in lst {
    result *= i
  }
  return result
}

// Given an array of numbers, return the product of all the numbers
// except the number at the given index.
// Examples
// productExceptIndex(lst: [1, 2, 3, 4, 5], index: 2) == 6
// productExceptIndex(lst: [1, 2, 3, 4, 5], index: 3) == 12
// productExceptIndex(lst: [1, 2, 3, 4, 5], index: 4) == 60
// productExceptIndex(lst: [1, 2, 3, 4, 5], index: 5) == 120
// productExceptIndex(lst: [1, 2, 3, 4, 5], index: 0) == 120
// productExceptIndex(lst: [1, 2, 3, 4, 5], index: 1) == 6
// productExceptIndex(lst: [1, 2, 3, 4, 5], index: 2) == 24
// productExceptIndex(lst: [1, 2, 3, 4, 5], index: 3) == 120
// productExceptIndex(lst: [1, 2, 3, 4, 5], index: 4) == 6
result = str[str.index(str.endIndex, offsetBy: -1-i)] + result // subscript 'subscript(_:)' requires that 'String.Index' conform to 'RangeExpression'

func isSorted(lst: [Int]) -> Bool {
  var sorted = true
  for i in 0..<lst.count-1 {
    if lst[i] > lst[i+1] {
      sorted = false
    }
  }
  return sorted
}
```swift
// Given an array of numbers, return whether or not they are sorted
// in ascending order. If array has more than 1 duplicate of the same
// number, return false. Assume no negative numbers and only integers.
// Examples
// isSorted(lst: [5]) == true
// isSorted(lst: [1, 2, 3, 4, 5]) == true
// isSorted(lst: [1, 3, 2, 4, 5]) == false
// isSorted(lst: [1, 2, 3, 4, 5, 6]) == true
// isSorted(lst: [1, 2, 3, 4, 5, 6, 7]) == true
// isSorted(lst: [1, 3, 2, 4, 5, 6, 7]) == false
// isSorted(lst: [1, 2, 2, 3, 3, 4]) == true
// isSorted(lst: [1, 2, 2, 2, 3, 4]) == false
func isSorted(lst: [Int]) -> Bool {
  var sorted = true
  for i in 0..<lst.count-1 {
    if lst[i] > lst[i+1] {
      sorted = false
    }
  }
  return sorted
}

// Given a string, return whether or not it is a palindrome.
// Examples
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(str: "racecar") == true
// isPalindrome(
 // Fatal error: Range requires lowerBound <= upperBound

func isSorted(lst: [Int]) -> Bool {
    var sorted = true
    for i in 0..<lst.count-1 {
        if lst[i] > lst[i+1] {
            sorted = false
            break
        }
    }
    return sorted
}

func removeFirstLast(str: String) -> String {
    if str.count < 2 {
        return ""
    }
    return String(str[str.startIndex..<str.index(str.startIndex, offsetBy: 1)]) + String(str[str.index(str.endIndex, offsetBy: -1)..<str.endIndex])
}

func removeFirst(str: String) -> String {
    if str.count == 0 {
        return ""
    }
    return String(str[str.startIndex..<str.index(str.startIndex, offsetBy: 1)]) + String(str.index(str.startIndex, offsetBy: 1)..<str.endIndex)
}

func swapFirstLast(str: String) -> String {
    if str.count == 0 {
        return ""
    }
    if str.count == 1 {
        return str
    }
    return String(str.last!) + String(str[str.index(str.startIndex, offsetBy: 1)..<str.index(str.startIndex, offsetBy: 2)]) + String(str[str.index(str.startIndex, offsetBy: 1)..<str.startIndex])
}
```swift
// Given an array of numbers, return whether or not they are sorted
// in ascending order. If array has more than 1 duplicate of the same
// number, return false. Assume no negative numbers and only integers.
// Examples
// isSorted(lst: [5]) == true
// isSorted(lst: [1, 2, 3, 4, 5]) == true
// isSorted(lst: [1, 3, 2, 4, 5]) == false
// isSorted(lst: [1, 2, 3, 4, 5, 6]) == true
// isSorted(lst: [1, 2, 3, 4, 5, 6, 7]) == true
// isSorted(lst: [1, 3, 2, 4, 5, 6, 7]) == false
// isSorted(lst: [1, 2, 2, 3, 3, 4]) == true
// isSorted(lst: [1, 2, 2, 2, 3, 4]) == false
func isSorted(lst: [Int]) -> Bool {
    var sorted = true
    for i in 0..<lst.count-1 {
        if lst[i] > lst[i+1] {
            sorted = false
            break
        }
    }
    return sorted
}

// Given a string, return a new string with the first and last
// characters removed. If the string is empty or contains less than
// 2 characters, return an empty string.
// Examples
// removeFirstLast("Hello") == "ell"
// removeFirstLast("a") == ""
// removeFirstLast("ab") == "b"
// removeFirstLast("abc") == "bc"
// removeFirstLast("abca") == "bc"
// removeFirstLast("abcde") == "bcde"
// removeFirstLast("abcdeabcde") == "cde"
func removeFirstLast(str: String) -> String {
    if str.count < 2 {
        return ""
    }
    return String(str[str.startIndex..<str.index(str.startIndex, offsetBy: 1)]) + String(str[str.index(str.endIndex, offsetBy: -1)..<str.endIndex])
}

// Given a string, return a new string with the first character
// of every word in the string removed.
// Examples
// removeFirst("Hello") == "ello"
// removeFirst("Hello World") == "ello World"
// removeFirst("Hello World!") == "ello World!"
// removeFirst("H") == ""
// removeFirst("H i") == " i"
func removeFirst(str: String) -> String {
    if str.count == 0 {
        return ""
    }
    return String(str[str.startIndex..<str.index(str.startIndex, offsetBy: 1)]) + String(str.index(str.startIndex, offsetBy: 1)..<str.endIndex)
}

// Given a string, return a new string with the first and last
// characters swapped, except under certain conditions.
// Examples
// swapFirstLast("Hello") == "oellH"
// swapFirstLast("Hello World") == "oell HdlroW"
// swapFirstLast("Hello World!") == "oell DlroW!"
// swapFirstLast("H") == "H"
// swapFirstLast("H e") == "e H"
// swapFirstLast("H e l") == "e l H"
func swapFirstLast(str: String) -> String {
    if str.count == 0 {
        return ""
    }
    if str.count == 1 {
        return str
    }
    return String(str.last!) + String(str[str.index(str.startIndex, offsetBy: 1)..<str.index(str.startIndex, offsetBy: 2)]) + String(str[str.index(str.startIndex, offsetBy: 1)..<str.startIndex])
}

// Given a string, return a new string with the first and last
// characters swapped, except under certain conditions.
// Examples
// swapFirstLast("Hello") == "oellH"
// swapFirstLast("Hello World") == "oell HdlroW"
// swapFirstLast("Hello World!") == "oell DlroW!"
// swapFirstLast("H") == "H"
// swapFirstLast("H e") == "e H"
// swapFirstLast("H e l") == "e l H"
func swapFirstLast(str: String) -> String {
    if str.count == 0 {
        return ""
    }
    if str.count == 1 {
        return str
    }
    return String(str.last!) + String(str[str.index(str.startIndex, offsetBy: 1)..<str.index(str.startIndex, offsetBy: 2)]) + String(str[str.index(str.startIndex, offsetBy: 1)..<str.startIndex])
}

// Given a string, return a new string with the first and last
// characters removed. If the string is empty or contains less than
// 2 characters, return an empty string.
// Examples
// removeFirstLast("Hello") == "ell"
// removeFirstLast("a") == ""
// removeFirstLast("ab") == "b"
// removeFirstLast("abc") == "bc"
// removeFirstLast("abca") == "bc"
// removeFirstLast("abcde") == "bcde"
// removeFirstLast("
return String(str[str.startIndex..<str.index(str.startIndex, offsetBy: 1)]) + String(str.index(str.startIndex, offsetBy: 1)..<str.endIndex) // missing argument label 'describing:' in call

func isSorted(lst: [Int]) -> Bool {
  var sorted = true
  for i in 0..<lst.count - 1 {
    if lst[i] > lst[i + 1] {
      sorted = false
      break
    }
  }
  return sorted
}

func capitalize(str: String) -> String {
  var result = ""
  for word in str.components(separatedBy: " ") {
    result += String(word.first!).uppercased() + word.dropFirst()
  }
  return result
}

func sum(lst: [Int]) -> Int {
  var result = 0
  for num in lst {
    result += num
  }
  return result
}
```swift
// Given an array of numbers, return whether or not they are sorted
// in ascending order. If array has more than 1 duplicate of the same
// number, return false. Assume no negative numbers and only integers.
// Examples
// isSorted(lst: [5]) == true
// isSorted(lst: [1, 2, 3, 4, 5]) == true
// isSorted(lst: [1, 3, 2, 4, 5]) == false
// isSorted(lst: [1, 2, 3, 4, 5, 6]) == true
// isSorted(lst: [1, 2, 3, 4, 5, 6, 7]) == true
// isSorted(lst: [1, 3, 2, 4, 5, 6, 7]) == false
// isSorted(lst: [1, 2, 2, 3, 3, 4]) == true
// isSorted(lst: [1, 2, 2, 2, 3, 4]) == false
func isSorted(lst: [Int]) -> Bool {
  var sorted = true
  for i in 0..<lst.count - 1 {
    if lst[i] > lst[i + 1] {
      sorted = false
      break
    }
  }
  return sorted
}
// Given a string, return a new string with the first character of
// each word in the string capitalized. Assume all characters
// are lowercase. Words are separated by spaces.
// Examples
// capitalize("hello world") == "Hello World"
// capitalize("hello") == "Hello"
// capitalize("hello ") == "Hello"
// capitalize(" hello") == "Hello"
// capitalize("hello world!") == "Hello World!"
func capitalize(str: String) -> String {
  var result = ""
  for word in str.components(separatedBy: " ") {
    result += String(word.first!).uppercased() + word.dropFirst()
  }
  return result
}
// Given a string, return a new string with the first character of
// each word in the string capitalized. Assume all characters
// are lowercase. Words are separated by spaces.
// Examples
// capitalize("hello world") == "Hello World"
// capitalize("hello") == "Hello"
// capitalize("hello ") == "Hello"
// capitalize(" hello") == "Hello"
// capitalize("hello world!") == "Hello World!"
func capitalize(str: String) -> String {
  var result = ""
  for word in str.components(separatedBy: " ") {
    result += String(word.first!).uppercased() + word.dropFirst()
  }
  return result
}
// Given a string, return a new string with the first character of
// each word in the string capitalized. Assume all characters
// are lowercase. Words are separated by spaces.
// Examples
// capitalize("hello world") == "Hello World"
// capitalize("hello") == "Hello"
// capitalize("hello ") == "Hello"
// capitalize(" hello") == "Hello"
// capitalize("hello world!") == "Hello World!"
func capitalize(str: String) -> String {
  var result = ""
  for word in str.components(separatedBy: " ") {
    result += String(word.first!).uppercased() + word.dropFirst()
  }
  return result
}
// Given an array of numbers, return the sum of all the numbers.
// Assume no negative numbers.
// Examples
// sum([1, 2, 3, 4, 5]) == 15
// sum([10, 20, 30, 40, 50]) == 150
// sum([100, 200, 300, 400, 500]) == 1500
// sum([1000, 2000, 3000, 4000, 5000]) == 15000
func sum(lst: [Int]) -> Int {
  var result = 0
  for num in lst {
    result += num
  }
  return result
}
// Given an array of numbers, return the sum of all the numbers.
// Assume no negative numbers.
// Examples
// sum([1, 2, 3, 4, 5]) == 15
// sum([10, 20, 30, 40, 50]) == 150
// sum([100, 200, 300, 400, 500]) == 1500
// sum([1000, 2000, 3000, 4000, 5000]) == 15000
func sum(lst: [Int]) -> Int {
  var result = 0
  for num in lst {
    result += num
  }
  return result
}
// Given an array of numbers, return the sum of all the numbers.
// Assume no negative numbers.
// Examples
// sum([1, 2, 3, 4, 5]) == 15
// sum([10, 20, 30, 40, 50]) == 150
// sum([100, 200, 300, 400, 500]) == 1500
// sum([1000, 20
 // Fatal error: Range requires lowerBound <= upperBound

func isSorted(lst: [Int]) -> Bool {
  var sorted = true
  for i in 0..<lst.count-1 {
    if lst[i] > lst[i+1] {
      sorted = false
    }
  }
  return sorted
}
```swift
// Given an array of numbers, return whether or not they are sorted
// in ascending order. If array has more than 1 duplicate of the same
// number, return false. Assume no negative numbers and only integers.
// Examples
// isSorted(lst: [5]) == true
// isSorted(lst: [1, 2, 3, 4, 5]) == true
// isSorted(lst: [1, 3, 2, 4, 5]) == false
// isSorted(lst: [1, 2, 3, 4, 5, 6]) == true
// isSorted(lst: [1, 2, 3, 4, 5, 6, 7]) == true
// isSorted(lst: [1, 3, 2, 4, 5, 6, 7]) == false
// isSorted(lst: [1, 2, 2, 3, 3, 4]) == true
// isSorted(lst: [1, 2, 2, 2, 3, 4]) == false
func isSorted(lst: [Int]) -> Bool {
  var sorted = true
  for i in 0..<lst.count-1 {
    if lst[i] > lst[i+1] {
      sorted = false
    }
  }
  return sorted
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func isSorted(lst: [Int]) -> Bool {
    var sorted = true
    for i in 0..<lst.count {
        if lst[i] > lst[i+1] {
            sorted = false
            break
        }
    }
    return sorted
}

func catCount(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" {
            count += 1
        }
    }
    return count
}

func dogCount(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[i] == "d" && str[i+1] == "o" && str[i+2] == "g" {
            count += 1
        }
    }
    return count
}

func catCount2(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" {
            count += 1
        }
    }
    return count
}

func dogCount2(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[i] == "d" && str[i+1] == "o" && str[i+2] == "g" {
            count += 1
        }
    }
    return count
}

func catCount3(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" {
            count += 1
        }
    }
    return count
}
```swift
// Given an array of numbers, return whether or not they are sorted
// in ascending order. If array has more than 1 duplicate of the same
// number, return false. Assume no negative numbers and only integers.
// Examples
// isSorted(lst: [5]) == true
// isSorted(lst: [1, 2, 3, 4, 5]) == true
// isSorted(lst: [1, 3, 2, 4, 5]) == false
// isSorted(lst: [1, 2, 3, 4, 5, 6]) == true
// isSorted(lst: [1, 2, 3, 4, 5, 6, 7]) == true
// isSorted(lst: [1, 3, 2, 4, 5, 6, 7]) == false
// isSorted(lst: [1, 2, 2, 3, 3, 4]) == true
// isSorted(lst: [1, 2, 2, 2, 3, 4]) == false
func isSorted(lst: [Int]) -> Bool {
    var sorted = true
    for i in 0..<lst.count {
        if lst[i] > lst[i+1] {
            sorted = false
            break
        }
    }
    return sorted
}
// Given a string, return the number of times the string "cat"
// appears in the string.
// Examples
// catCount("cat") == 1
// catCount("catcat") == 2
// catCount("catcatcat") == 3
func catCount(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" {
            count += 1
        }
    }
    return count
}
// Given a string, return the number of times the string "dog"
// appears in the string.
// Examples
// dogCount("dog") == 1
// dogCount("dogdog") == 2
// dogCount("dogdogdog") == 3
func dogCount(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[i] == "d" && str[i+1] == "o" && str[i+2] == "g" {
            count += 1
        }
    }
    return count
}
// Given a string, return the number of times the string "cat"
// appears in the string, but only count the string "cat"
// itself once.
// Examples
// catCount2("cat") == 1
// catCount2("catcat") == 2
// catCount2("catcatcat") == 3
// catCount2("catcatcatcat") == 4
func catCount2(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" {
            count += 1
        }
    }
    return count
}
// Given a string, return the number of times the string "dog"
// appears in the string, but only count the string "dog"
// itself once.
// Examples
// dogCount2("dog") == 1
// dogCount2("dogdog") == 2
// dogCount2("dogdogdog") == 3
// dogCount2("dogdogdogdog") == 4
func dogCount2(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[i] == "d" && str[i+1] == "o" && str[i+2] == "g" {
            count += 1
        }
    }
    return count
}
// Given a string, return the number of times the string "cat"
// appears in the string, but only count the string "cat"
// itself once.
// Examples
// catCount3("cat") == 1
// catCount3("catcat") == 2
// catCount3("catcatcat") == 3
// catCount3("catcatcatcat") == 4
func catCount3(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" {
            count += 1
        }
    }
    return count
}
// Given a string, return the number of times the string "dog"
// appears in the string, but only count the string "dog"
// itself once.
// Examples
// dogCount3("dog") == 1
// dogCount3("dogdog") == 2
// dogCount3("dogdogdog") == 3
// dogCount3("dogdogdogdog") == 4
func dogCount3(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[i] == "d" && str[i+1] == "o" && str[i+2] == "g" {
            count += 1
        }
    }
if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "d" && str[i+1] == "o" && str[i+2] == "g" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "d" && str[i+1] == "o" && str[i+2] == "g" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "d" && str[i+1] == "o" && str[i+2] == "g" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "d" && str[i+1] == "o" && str[i+2] == "g" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "d" && str[i+1] == "o" && str[i+2] == "g" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "d" && str[i+1] == "o" && str[i+2] == "g" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func isSorted(lst: [Int]) -> Bool {
  for i in 0..<lst.count-1 {
    if lst[i] > lst[i+1] {
      return false
    }
  }
  return true
}

func removeConsecutiveDuplicates(str: String) -> String {
  var result = ""
  for i in 0..<str.count {
    if i == 0 {
      result += String(str[str.startIndex])
    } else if str[str.index(before: str.startIndex)] != str[str.index(after: str.startIndex)] {
      result += String(str[str.index(after: str.startIndex)])
    }
  }
  return result
}

func sum(lst: [Int]) -> Int {
  var result = 0
  for i in lst {
    result += i
  }
  return result
}

func sumAllButFirstTwo(lst: [Int]) -> Int {
  var result = 0
  for i in 2..<lst.count {
    result += lst[i]
  }
  return result
}
```swift
// Given an array of numbers, return whether or not they are sorted
// in ascending order. If array has more than 1 duplicate of the same
// number, return false. Assume no negative numbers and only integers.
// Examples
// isSorted(lst: [5]) == true
// isSorted(lst: [1, 2, 3, 4, 5]) == true
// isSorted(lst: [1, 3, 2, 4, 5]) == false
// isSorted(lst: [1, 2, 3, 4, 5, 6]) == true
// isSorted(lst: [1, 2, 3, 4, 5, 6, 7]) == true
// isSorted(lst: [1, 3, 2, 4, 5, 6, 7]) == false
// isSorted(lst: [1, 2, 2, 3, 3, 4]) == true
// isSorted(lst: [1, 2, 2, 2, 3, 4]) == false
func isSorted(lst: [Int]) -> Bool {
  for i in 0..<lst.count-1 {
    if lst[i] > lst[i+1] {
      return false
    }
  }
  return true
}

// Given a string, return the string with all consecutive duplicate
// characters removed. Assume no spaces. Assume no special characters.
// Examples
// removeConsecutiveDuplicates(str: "aaa") == "a"
// removeConsecutiveDuplicates(str: "aaa bbb ccc") == "a b c"
// removeConsecutiveDuplicates(str: "aaa bbb ccc ddd") == "a b c d"
// removeConsecutiveDuplicates(str: "aaa bbb ccc ddd eee") == "a b c d e"
func removeConsecutiveDuplicates(str: String) -> String {
  var result = ""
  for i in 0..<str.count {
    if i == 0 {
      result += String(str[str.startIndex])
    } else if str[str.index(before: str.startIndex)] != str[str.index(after: str.startIndex)] {
      result += String(str[str.index(after: str.startIndex)])
    }
  }
  return result
}

// Given an array of numbers, return the sum of all the numbers.
// Examples
// sum(lst: [1, 2, 3, 4, 5]) == 15
// sum(lst: [1, 2, 3, 4, 5, 6]) == 21
// sum(lst: [1, 2, 3, 4, 5, 6, 7]) == 28
// sum(lst: [1, 2, 3, 4, 5, 6, 7, 8]) == 36
// sum(lst: [1, 2, 3, 4, 5, 6, 7, 8, 9]) == 45
// sum(lst: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 55
func sum(lst: [Int]) -> Int {
  var result = 0
  for i in lst {
    result += i
  }
  return result
}

// Given an array of numbers, return the sum of all the numbers
// except the first two. Assume no negative numbers and only integers.
// Examples
// sumAllButFirstTwo(lst: [1, 2, 3, 4, 5]) == 10
// sumAllButFirstTwo(lst: [1, 2, 3, 4, 5, 6]) == 15
// sumAllButFirstTwo(lst: [1, 2, 3, 4, 5, 6, 7]) == 21
// sumAllButFirstTwo(lst: [1, 2, 3, 4, 5, 6, 7, 8]) == 28
// sumAllButFirstTwo(lst: [1, 2, 3, 4, 5, 6, 7, 8, 9]) == 36
// sumAllButFirstTwo(lst: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 45
func sumAllButFirstTwo(lst: [Int]) -> Int {
  var result = 0
  for i in 2..<lst.count {
    result += lst[i]
  }
  return result
}

// Given an array of numbers, return the sum of all the numbers
// except the last two. Assume no negative numbers and only integers.
// Examples
// sumAllButLastTwo(lst: [1, 2, 3, 4, 5]) == 9
// sumAllButLastTwo(lst: [1, 2, 3, 4, 5, 6]) == 15
// sumAllButLastTwo(lst: [1, 2, 3, 4, 5, 6, 7]) == 21
// sumAllButLastTwo(lst: [1, 2, 3, 4, 5, 6, 7, 8]) == 28
// sumAllButLastTwo(lst: [1, 2, 3, 4, 5,
 // Fatal error: Range requires lowerBound <= upperBound

func isSorted(lst: [Int]) -> Bool {
    for i in 0..<lst.count-1 {
        if lst[i] > lst[i+1] {
            return false
        }
    }
    return true
}
```swift
// Given an array of numbers, return whether or not they are sorted
// in ascending order. If array has more than 1 duplicate of the same
// number, return false. Assume no negative numbers and only integers.
// Examples
// isSorted(lst: [5]) == true
// isSorted(lst: [1, 2, 3, 4, 5]) == true
// isSorted(lst: [1, 3, 2, 4, 5]) == false
// isSorted(lst: [1, 2, 3, 4, 5, 6]) == true
// isSorted(lst: [1, 2, 3, 4, 5, 6, 7]) == true
// isSorted(lst: [1, 3, 2, 4, 5, 6, 7]) == false
// isSorted(lst: [1, 2, 2, 3, 3, 4]) == true
// isSorted(lst: [1, 2, 2, 2, 3, 4]) == false
func isSorted(lst: [Int]) -> Bool {
    for i in 0..<lst.count-1 {
        if lst[i] > lst[i+1] {
            return false
        }
    }
    return true
}
// Given an array of numbers, return whether or not they are sorted
// in ascending order. If array has more than 1 duplicate of the same
// number, return false. Assume no negative numbers and only integers.
// Examples
// isSorted(lst: [5]) == true
// isSorted(lst: [1, 2, 3, 4, 5]) == true
// isSorted(lst: [1, 3, 2, 4, 5]) == false
// isSorted(lst: [1, 2, 3, 4, 5, 6]) == true
// isSorted(lst: [1, 2, 3, 4, 5, 6, 7]) == true
// isSorted(lst: [1, 3, 2, 4, 5, 6, 7]) == false
// isSorted(lst: [1, 2, 2, 3, 3, 4]) == true
// isSorted(lst: [1, 2, 2, 2, 3, 4]) == false
func isSorted(lst: [Int]) -> Bool {
    for i in 0..<lst.count-1 {
        if lst[i] > lst[i+1] {
            return false
        }
    }
    return true
}
// Given an array of numbers, return whether or not they are sorted
// in ascending order. If array has more than 1 duplicate of the same
// number, return false. Assume no negative numbers and only integers.
// Examples
// isSorted(lst: [5]) == true
// isSorted(lst: [1, 2, 3, 4, 5]) == true
// isSorted(lst: [1, 3, 2, 4, 5]) == false
// isSorted(lst: [1, 2, 3, 4, 5, 6]) == true
// isSorted(lst: [1, 2, 3, 4, 5, 6, 7]) == true
// isSorted(lst: [1, 3, 2, 4, 5, 6, 7]) == false
// isSorted(lst: [1, 2, 2, 3, 3, 4]) == true
// isSorted(lst: [1, 2, 2, 2, 3, 4]) == false
func isSorted(lst: [Int]) -> Bool {
    for i in 0..<lst.count-1 {
        if lst[i] > lst[i+1] {
            return false
        }
    }
    return true
}
// Given an array of numbers, return whether or not they are sorted
// in ascending order. If array has more than 1 duplicate of the same
// number, return false. Assume no negative numbers and only integers.
// Examples
// isSorted(lst: [5]) == true
// isSorted(lst: [1, 2, 3, 4, 5]) == true
// isSorted(lst: [1, 3, 2, 4, 5]) == false
// isSorted(lst: [1, 2, 3, 4, 5, 6]) == true
// isSorted(lst: [1, 2, 3, 4, 5, 6, 7]) == true
// isSorted(lst: [1, 3, 2, 4, 5, 6, 7]) == false
// isSorted(lst: [1, 2, 2, 3, 3, 4]) == true
// isSorted(lst: [1, 2, 2, 2, 3, 4]) == false
func isSorted(lst: [Int]) -> Bool {
    for i in 0..<lst.count-1 {
        if lst[i] > lst[i+1] {
            return false
        }
    }
    return true
}
// Given an array of numbers, return whether or not they are sorted
// in ascending order. If array has more than 1 duplicate of the same
// number, return false. Assume no negative numbers and only integers.
// Examples
//
 // Fatal error: Range requires lowerBound <= upperBound

func isSorted(lst: [Int]) -> Bool {
  for i in 0..<lst.count-1 {
    if lst[i] > lst[i+1] {
      return false
    }
  }
  return true
}

func catCount(str: String) -> Int {
  var count = 0
  for i in 0..<str.count-2 {
    if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" {
      count += 1
    }
  }
  return count
}

func dogCount(str: String) -> Int {
  var count = 0
  for i in 0..<str.count-2 {
    if str[i] == "d" && str[i+1] == "o" && str[i+2] == "g" {
      count += 1
    }
  }
  return count
}

func catCatCount(str: String) -> Int {
  var count = 0
  for i in 0..<str.count-2 {
    if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" {
      count += 1
    }
  }
  return count
}

func sevenCount(lst: [Int]) -> Int {
  var count = 0
  for i in 0..<lst.count {
    if lst[i] == 7 {
      count += 1
    }
  }
  return count
}

func sevenSevenCount(lst: [Int]) -> Int {
  var count = 0
  for i in 0..<lst.count {
    if lst[i] == 7 {
      count += 1
    }
  }
  return count
}
```swift
// Given an array of numbers, return whether or not they are sorted
// in ascending order. If array has more than 1 duplicate of the same
// number, return false. Assume no negative numbers and only integers.
// Examples
// isSorted(lst: [5]) == true
// isSorted(lst: [1, 2, 3, 4, 5]) == true
// isSorted(lst: [1, 3, 2, 4, 5]) == false
// isSorted(lst: [1, 2, 3, 4, 5, 6]) == true
// isSorted(lst: [1, 2, 3, 4, 5, 6, 7]) == true
// isSorted(lst: [1, 3, 2, 4, 5, 6, 7]) == false
// isSorted(lst: [1, 2, 2, 3, 3, 4]) == true
// isSorted(lst: [1, 2, 2, 2, 3, 4]) == false
func isSorted(lst: [Int]) -> Bool {
  for i in 0..<lst.count-1 {
    if lst[i] > lst[i+1] {
      return false
    }
  }
  return true
}

// Given a string, return the number of times that the string
// "cat" appears.
// Examples
// catCount("cat") == 1
// catCount("catcat") == 2
// catCount("catcatcat") == 3
// catCount("catcatcatcat") == 4
// catCount("catcatcatcatcat") == 5
func catCount(str: String) -> Int {
  var count = 0
  for i in 0..<str.count-2 {
    if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" {
      count += 1
    }
  }
  return count
}

// Given a string, return the number of times that the string
// "dog" appears.
// Examples
// dogCount("dog") == 1
// dogCount("dogdog") == 2
// dogCount("dogdogdog") == 3
// dogCount("dogdogdogdog") == 4
// dogCount("dogdogdogdogdog") == 5
func dogCount(str: String) -> Int {
  var count = 0
  for i in 0..<str.count-2 {
    if str[i] == "d" && str[i+1] == "o" && str[i+2] == "g" {
      count += 1
    }
  }
  return count
}

// Given a string, return the number of times that the string
// "cat" appears, but only count one cat per word.
// Examples
// catCatCount("cat") == 1
// catCatCount("catcat") == 2
// catCatCount("catcatcat") == 3
// catCatCount("catcatcatcat") == 4
// catCatCount("catcatcatcatcat") == 5
func catCatCount(str: String) -> Int {
  var count = 0
  for i in 0..<str.count-2 {
    if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" {
      count += 1
    }
  }
  return count
}

// Given an array of numbers, return the number of times that
// the number 7 appears.
// Examples
// sevenCount([1, 2, 7]) == 1
// sevenCount([7, 7, 7]) == 3
// sevenCount([1, 2, 3, 7, 9, 7]) == 2
// sevenCount([1, 2, 3, 7, 7, 7]) == 4
// sevenCount([1, 2, 3, 7, 7, 7, 7]) == 5
func sevenCount(lst: [Int]) -> Int {
  var count = 0
  for i in 0..<lst.count {
    if lst[i] == 7 {
      count += 1
    }
  }
  return count
}

// Given an array of numbers, return the number of times that
// the number 7 appears, but only count one 7 per number.
// Examples
// sevenSevenCount([1, 2, 7]) == 1
// sevenSevenCount([7, 7, 7]) == 3
// sevenSevenCount([1, 2, 3, 7, 9, 7]) == 2
// sevenSevenCount([1, 2, 3, 7, 7, 7]) == 4
// sevenSevenCount([1, 2, 3, 7, 7, 7, 7]) == 5
func sevenSevenCount(lst: [Int]) -> Int {
  var count = 0
  for i in 0..<lst.count {
    if lst[i] == 7 {
      count += 1
    }
  }
  return count
}

// Given an array of numbers, return the number of times that
// the number 7 appears, but only count one 7 per number
// AND only count one 7 before the first instance of a 7.
// Examples
if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "d" && str[i+1] == "o" && str[i+2] == "g" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "d" && str[i+1] == "o" && str[i+2] == "g" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "d" && str[i+1] == "o" && str[i+2] == "g" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "c" && str[i+1] == "a" && str[i+2] == "t" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func isSorted(lst: [Int]) -> Bool {
  var sorted = true
  for i in 0..<lst.count-1 {
    if lst[i] > lst[i+1] {
      sorted = false
      break
    }
  }
  return sorted
}

func sum(lst: [Int]) -> Int {
  var sum = 0
  for i in 0..<lst.count {
    sum += lst[i]
  }
  return sum
}

func sum5and7(lst: [Int]) -> Int {
  var sum = 0
  for i in 0..<lst.count {
    if lst[i] % 5 == 0 {
      continue
    }
    sum += lst[i]
  }
  return sum
}
```swift
// Given an array of numbers, return whether or not they are sorted
// in ascending order. If array has more than 1 duplicate of the same
// number, return false. Assume no negative numbers and only integers.
// Examples
// isSorted(lst: [5]) == true
// isSorted(lst: [1, 2, 3, 4, 5]) == true
// isSorted(lst: [1, 3, 2, 4, 5]) == false
// isSorted(lst: [1, 2, 3, 4, 5, 6]) == true
// isSorted(lst: [1, 2, 3, 4, 5, 6, 7]) == true
// isSorted(lst: [1, 3, 2, 4, 5, 6, 7]) == false
// isSorted(lst: [1, 2, 2, 3, 3, 4]) == true
// isSorted(lst: [1, 2, 2, 2, 3, 4]) == false
func isSorted(lst: [Int]) -> Bool {
  var sorted = true
  for i in 0..<lst.count-1 {
    if lst[i] > lst[i+1] {
      sorted = false
      break
    }
  }
  return sorted
}

// Given an array of numbers, return the sum of all the numbers
// in the array. Assume no negative numbers.
// Examples
// sum(lst: [1, 2, 3, 4, 5]) == 15
// sum(lst: [1, 2, 3, 4, 5, 6]) == 21
// sum(lst: [1, 2, 3, 4, 5, 6, 7]) == 28
// sum(lst: [1, 2, 3, 4, 5, 6, 7, 8]) == 36
func sum(lst: [Int]) -> Int {
  var sum = 0
  for i in 0..<lst.count {
    sum += lst[i]
  }
  return sum
}

// Given an array of numbers, return the sum of all the numbers
// in the array, but ignore any number that is a multiple of 5.
// Examples
// sum5and7(lst: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 23
// sum5and7(lst: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15]) == 21
// sum5and7(lst: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15]) == 21
// sum5and7(lst: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 16]) == 24
func sum5and7(lst: [Int]) -> Int {
  var sum = 0
  for i in 0..<lst.count {
    if lst[i] % 5 == 0 {
      continue
    }
    sum += lst[i]
  }
  return sum
}

// Given an array of numbers, return the sum of all the numbers
// in the array, but ignore any number that is a multiple of 5.
// If there is no number to add that is not a multiple of 5,
// return 0.
// Examples
// sum5and7(lst: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 23
// sum5and7(lst: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15]) == 21
// sum5and7(lst: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15]) == 21
// sum5and7(lst: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 16]) == 24
func sum5and7(lst: [Int]) -> Int {
  var sum = 0
  for i in 0..<lst.count {
    if lst[i] % 5 == 0 {
      continue
    }
    sum += lst[i]
  }
  return sum
}

// Given an array of numbers, return the sum of all the numbers
// in the array, but ignore any number that is a multiple of 5.
// If there is no number to add that is not a multiple of 5,
// return 0.
// Examples
// sum5and7(lst: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 23
// sum5and7(lst: [1, 2, 3, 4, 5, 6, 7, 8
 // Fatal error: Range requires lowerBound <= upperBound

func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval2.0 > interval1.1 {
        return "NO"
    }
    return "YES"
}
```swift
// You are given two intervals,
// where each interval is a pair of integers. For example, interval = (start, end) = (1, 2).
// The given intervals are closed which means that the interval (start, end)
// includes both start and end.
// For each given interval, it is assumed that its start is less or equal its end.
// Your task is to determine whether the length of intersection of these two 
// intervals is a prime number.
// Example, the intersection of the intervals (1, 3), (2, 4) is (2, 3)
// which its length is 1, which not a prime number.
// If the length of the intersection is a prime number, return "YES",
// otherwise, return "NO".
// If the two intervals don't intersect, return "NO".
// [input/output] samples:
// intersection(interval1: (1, 2), interval2: (2, 3)) == "NO"
// intersection(interval1: (-1, 1), interval2: (0, 4)) == "NO"
// intersection(interval1: (-3, -1), interval2: (-5, 5)) == "YES"
func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval2.0 > interval1.1 {
        return "NO"
    }
    return "YES"
}
<|file_separator|>
 // XCTAssertTrue failed

func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval2.0 > interval1.1 {
        return "NO"
    }
    return "YES"
}
```swift
// You are given two intervals,
// where each interval is a pair of integers. For example, interval = (start, end) = (1, 2).
// The given intervals are closed which means that the interval (start, end)
// includes both start and end.
// For each given interval, it is assumed that its start is less or equal its end.
// Your task is to determine whether the length of intersection of these two 
// intervals is a prime number.
// Example, the intersection of the intervals (1, 3), (2, 4) is (2, 3)
// which its length is 1, which not a prime number.
// If the length of the intersection is a prime number, return "YES",
// otherwise, return "NO".
// If the two intervals don't intersect, return "NO".
// [input/output] samples:
// intersection(interval1: (1, 2), interval2: (2, 3)) == "NO"
// intersection(interval1: (-1, 1), interval2: (0, 4)) == "NO"
// intersection(interval1: (-3, -1), interval2: (-5, 5)) == "YES"
func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval2.0 > interval1.1 {
        return "NO"
    }
    return "YES"
}
<|file_separator|>
 // XCTAssertTrue failed

func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval2.0 > interval1.1 {
        return "NO"
    }
    return "YES"
}
```swift
// You are given two intervals,
// where each interval is a pair of integers. For example, interval = (start, end) = (1, 2).
// The given intervals are closed which means that the interval (start, end)
// includes both start and end.
// For each given interval, it is assumed that its start is less or equal its end.
// Your task is to determine whether the length of intersection of these two 
// intervals is a prime number.
// Example, the intersection of the intervals (1, 3), (2, 4) is (2, 3)
// which its length is 1, which not a prime number.
// If the length of the intersection is a prime number, return "YES",
// otherwise, return "NO".
// If the two intervals don't intersect, return "NO".
// [input/output] samples:
// intersection(interval1: (1, 2), interval2: (2, 3)) == "NO"
// intersection(interval1: (-1, 1), interval2: (0, 4)) == "NO"
// intersection(interval1: (-3, -1), interval2: (-5, 5)) == "YES"
func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval2.0 > interval1.1 {
        return "NO"
    }
    return "YES"
}
<|file_separator|>
 // XCTAssertTrue failed

func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval2.0 > interval1.1 {
        return "NO"
    }
    return "YES"
}
```swift
// You are given two intervals,
// where each interval is a pair of integers. For example, interval = (start, end) = (1, 2).
// The given intervals are closed which means that the interval (start, end)
// includes both start and end.
// For each given interval, it is assumed that its start is less or equal its end.
// Your task is to determine whether the length of intersection of these two 
// intervals is a prime number.
// Example, the intersection of the intervals (1, 3), (2, 4) is (2, 3)
// which its length is 1, which not a prime number.
// If the length of the intersection is a prime number, return "YES",
// otherwise, return "NO".
// If the two intervals don't intersect, return "NO".
// [input/output] samples:
// intersection(interval1: (1, 2), interval2: (2, 3)) == "NO"
// intersection(interval1: (-1, 1), interval2: (0, 4)) == "NO"
// intersection(interval1: (-3, -1), interval2: (-5, 5)) == "YES"
func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval2.0 > interval1.1 {
        return "NO"
    }
    return "YES"
}
<|file_separator|>
 // XCTAssertTrue failed

func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval2.0 > interval1.1 {
        return "NO"
    }
    return "YES"
}
```swift
// You are given two intervals,
// where each interval is a pair of integers. For example, interval = (start, end) = (1, 2).
// The given intervals are closed which means that the interval (start, end)
// includes both start and end.
// For each given interval, it is assumed that its start is less or equal its end.
// Your task is to determine whether the length of intersection of these two 
// intervals is a prime number.
// Example, the intersection of the intervals (1, 3), (2, 4) is (2, 3)
// which its length is 1, which not a prime number.
// If the length of the intersection is a prime number, return "YES",
// otherwise, return "NO".
// If the two intervals don't intersect, return "NO".
// [input/output] samples:
// intersection(interval1: (1, 2), interval2: (2, 3)) == "NO"
// intersection(interval1: (-1, 1), interval2: (0, 4)) == "NO"
// intersection(interval1: (-3, -1), interval2: (-5, 5)) == "YES"
func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval2.0 > interval1.1 {
        return "NO"
    }
    return "YES"
}<|file_separator|>```swift
<|fim_prefix|>// Given
 // XCTAssertTrue failed

func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval2.0 > interval1.1 {
        return "NO"
    }
    return "YES"
}
```swift
// You are given two intervals,
// where each interval is a pair of integers. For example, interval = (start, end) = (1, 2).
// The given intervals are closed which means that the interval (start, end)
// includes both start and end.
// For each given interval, it is assumed that its start is less or equal its end.
// Your task is to determine whether the length of intersection of these two 
// intervals is a prime number.
// Example, the intersection of the intervals (1, 3), (2, 4) is (2, 3)
// which its length is 1, which not a prime number.
// If the length of the intersection is a prime number, return "YES",
// otherwise, return "NO".
// If the two intervals don't intersect, return "NO".
// [input/output] samples:
// intersection(interval1: (1, 2), interval2: (2, 3)) == "NO"
// intersection(interval1: (-1, 1), interval2: (0, 4)) == "NO"
// intersection(interval1: (-3, -1), interval2: (-5, 5)) == "YES"
func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval2.0 > interval1.1 {
        return "NO"
    }
    return "YES"
}
<|file_separator|>```swift
<|fim_prefix|>// Given
 // XCTAssertTrue failed

func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval1.1 < interval2.0 {
        return "NO"
    }
    return "YES"
}
```swift
// You are given two intervals,
// where each interval is a pair of integers. For example, interval = (start, end) = (1, 2).
// The given intervals are closed which means that the interval (start, end)
// includes both start and end.
// For each given interval, it is assumed that its start is less or equal its end.
// Your task is to determine whether the length of intersection of these two 
// intervals is a prime number.
// Example, the intersection of the intervals (1, 3), (2, 4) is (2, 3)
// which its length is 1, which not a prime number.
// If the length of the intersection is a prime number, return "YES",
// otherwise, return "NO".
// If the two intervals don't intersect, return "NO".
// [input/output] samples:
// intersection(interval1: (1, 2), interval2: (2, 3)) == "NO"
// intersection(interval1: (-1, 1), interval2: (0, 4)) == "NO"
// intersection(interval1: (-3, -1), interval2: (-5, 5)) == "YES"
func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval1.1 < interval2.0 {
        return "NO"
    }
    return "YES"
}
<|file_separator|>
 // XCTAssertTrue failed

func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval2.0 > interval1.1 {
        return "NO"
    }
    return "YES"
}
```swift
// You are given two intervals,
// where each interval is a pair of integers. For example, interval = (start, end) = (1, 2).
// The given intervals are closed which means that the interval (start, end)
// includes both start and end.
// For each given interval, it is assumed that its start is less or equal its end.
// Your task is to determine whether the length of intersection of these two 
// intervals is a prime number.
// Example, the intersection of the intervals (1, 3), (2, 4) is (2, 3)
// which its length is 1, which not a prime number.
// If the length of the intersection is a prime number, return "YES",
// otherwise, return "NO".
// If the two intervals don't intersect, return "NO".
// [input/output] samples:
// intersection(interval1: (1, 2), interval2: (2, 3)) == "NO"
// intersection(interval1: (-1, 1), interval2: (0, 4)) == "NO"
// intersection(interval1: (-3, -1), interval2: (-5, 5)) == "YES"
func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval2.0 > interval1.1 {
        return "NO"
    }
    return "YES"
}
<|file_separator|>
 // XCTAssertTrue failed

func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval2.0 > interval1.1 {
        return "NO"
    }
    return "YES"
}
```swift
// You are given two intervals,
// where each interval is a pair of integers. For example, interval = (start, end) = (1, 2).
// The given intervals are closed which means that the interval (start, end)
// includes both start and end.
// For each given interval, it is assumed that its start is less or equal its end.
// Your task is to determine whether the length of intersection of these two 
// intervals is a prime number.
// Example, the intersection of the intervals (1, 3), (2, 4) is (2, 3)
// which its length is 1, which not a prime number.
// If the length of the intersection is a prime number, return "YES",
// otherwise, return "NO".
// If the two intervals don't intersect, return "NO".
// [input/output] samples:
// intersection(interval1: (1, 2), interval2: (2, 3)) == "NO"
// intersection(interval1: (-1, 1), interval2: (0, 4)) == "NO"
// intersection(interval1: (-3, -1), interval2: (-5, 5)) == "YES"
func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval2.0 > interval1.1 {
        return "NO"
    }
    return "YES"
}
<|file_separator|>
 // XCTAssertTrue failed

func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval2.0 > interval1.1 {
        return "NO"
    }
    return "YES"
}
```swift
// You are given two intervals,
// where each interval is a pair of integers. For example, interval = (start, end) = (1, 2).
// The given intervals are closed which means that the interval (start, end)
// includes both start and end.
// For each given interval, it is assumed that its start is less or equal its end.
// Your task is to determine whether the length of intersection of these two 
// intervals is a prime number.
// Example, the intersection of the intervals (1, 3), (2, 4) is (2, 3)
// which its length is 1, which not a prime number.
// If the length of the intersection is a prime number, return "YES",
// otherwise, return "NO".
// If the two intervals don't intersect, return "NO".
// [input/output] samples:
// intersection(interval1: (1, 2), interval2: (2, 3)) == "NO"
// intersection(interval1: (-1, 1), interval2: (0, 4)) == "NO"
// intersection(interval1: (-3, -1), interval2: (-5, 5)) == "YES"
func intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
    if interval1.0 > interval2.1 || interval2.0 > interval1.1 {
        return "NO"
    }
    return "YES"
}
<|file_separator|>
 // XCTAssertTrue failed

func prodSigns(arr: [Int]) -> Int? {
    if arr.isEmpty {
        return nil
    }
    var result = 0
    for i in 0..<arr.count {
        result += arr[i] * arr.reduce(1, { $0 * $1 })
    }
    return result
}
```swift
// You are given an array arr of integers and you need to return
// sum of magnitudes of integers multiplied by product of all signs
// of each number in the array, represented by 1, -1 or 0.
// Note: return nil for empty arr.
// Example:
// prodSigns(arr: [1, 2, 2, -4]) == 9
// prodSigns(arr: [0, 1]) == 0
// prodSigns(arr: [] as [Int]) == nil
func prodSigns(arr: [Int]) -> Int? {
    if arr.isEmpty {
        return nil
    }
    var result = 0
    for i in 0..<arr.count {
        result += arr[i] * arr.reduce(1, { $0 * $1 })
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func prodSigns(arr: [Int]) -> Int? {
    if arr.isEmpty {
        return nil
    }
    var result = 0
    var product = 1
    for i in arr {
        product *= i
    }
    for i in arr {
        if i == 0 {
            result += 0
        } else {
            result += i * product
        }
    }
    return result
}
```swift
// You are given an array arr of integers and you need to return
// sum of magnitudes of integers multiplied by product of all signs
// of each number in the array, represented by 1, -1 or 0.
// Note: return nil for empty arr.
// Example:
// prodSigns(arr: [1, 2, 2, -4]) == 9
// prodSigns(arr: [0, 1]) == 0
// prodSigns(arr: [] as [Int]) == nil
func prodSigns(arr: [Int]) -> Int? {
    if arr.isEmpty {
        return nil
    }
    var result = 0
    var product = 1
    for i in arr {
        product *= i
    }
    for i in arr {
        if i == 0 {
            result += 0
        } else {
            result += i * product
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func prodSigns(arr: [Int]) -> Int? {
    if arr.isEmpty {
        return nil
    }
    
    var product = 1
    var sum = 0
    
    for i in 0..<arr.count {
        product *= arr[i]
    }
    
    for i in 0..<arr.count {
        if arr[i] == 0 {
            continue
        }
        
        if arr[i] < 0 {
            sum += product / abs(arr[i])
        } else {
            sum += product * arr[i]
        }
    }
    
    return sum
}
```swift
// You are given an array arr of integers and you need to return
// sum of magnitudes of integers multiplied by product of all signs
// of each number in the array, represented by 1, -1 or 0.
// Note: return nil for empty arr.
// Example:
// prodSigns(arr: [1, 2, 2, -4]) == 9
// prodSigns(arr: [0, 1]) == 0
// prodSigns(arr: [] as [Int]) == nil
func prodSigns(arr: [Int]) -> Int? {
    if arr.isEmpty {
        return nil
    }
    
    var product = 1
    var sum = 0
    
    for i in 0..<arr.count {
        product *= arr[i]
    }
    
    for i in 0..<arr.count {
        if arr[i] == 0 {
            continue
        }
        
        if arr[i] < 0 {
            sum += product / abs(arr[i])
        } else {
            sum += product * arr[i]
        }
    }
    
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func prodSigns(arr: [Int]) -> Int? {
    // Write your code here
    if arr.isEmpty {
        return nil
    }
    
    var product = 1
    var sum = 0
    
    for i in arr {
        product *= i
    }
    
    for i in arr {
        if i == 0 {
            continue
        }
        
        if i > 0 {
            sum += product / i
        } else {
            sum -= product / i
        }
    }
    
    return sum
}
```swift
// You are given an array arr of integers and you need to return
// sum of magnitudes of integers multiplied by product of all signs
// of each number in the array, represented by 1, -1 or 0.
// Note: return nil for empty arr.
// Example:
// prodSigns(arr: [1, 2, 2, -4]) == 9
// prodSigns(arr: [0, 1]) == 0
// prodSigns(arr: [] as [Int]) == nil
func prodSigns(arr: [Int]) -> Int? {
    // Write your code here
    if arr.isEmpty {
        return nil
    }
    
    var product = 1
    var sum = 0
    
    for i in arr {
        product *= i
    }
    
    for i in arr {
        if i == 0 {
            continue
        }
        
        if i > 0 {
            sum += product / i
        } else {
            sum -= product / i
        }
    }
    
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func prodSigns(arr: [Int]) -> Int? {
    // Write your code here
    if arr.isEmpty {
        return nil
    }
    var result = 0
    for i in 0..<arr.count {
        result += arr[i] * arr.reduce(1, { $0 * $1 })
    }
    return result
}
```swift
// You are given an array arr of integers and you need to return
// sum of magnitudes of integers multiplied by product of all signs
// of each number in the array, represented by 1, -1 or 0.
// Note: return nil for empty arr.
// Example:
// prodSigns(arr: [1, 2, 2, -4]) == 9
// prodSigns(arr: [0, 1]) == 0
// prodSigns(arr: [] as [Int]) == nil
func prodSigns(arr: [Int]) -> Int? {
    // Write your code here
    if arr.isEmpty {
        return nil
    }
    var result = 0
    for i in 0..<arr.count {
        result += arr[i] * arr.reduce(1, { $0 * $1 })
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func prodSigns(arr: [Int]) -> Int? {
    // your code here
}
```swift
// You are given an array arr of integers and you need to return
// sum of magnitudes of integers multiplied by product of all signs
// of each number in the array, represented by 1, -1 or 0.
// Note: return nil for empty arr.
// Example:
// prodSigns(arr: [1, 2, 2, -4]) == 9
// prodSigns(arr: [0, 1]) == 0
// prodSigns(arr: [] as [Int]) == nil
func prodSigns(arr: [Int]) -> Int? {
    // your code here
}
<|file_separator|>
} // missing return in global function expected to return 'Int?'

func prodSigns(arr: [Int]) -> Int? {
    // your code
}
```swift
// You are given an array arr of integers and you need to return
// sum of magnitudes of integers multiplied by product of all signs
// of each number in the array, represented by 1, -1 or 0.
// Note: return nil for empty arr.
// Example:
// prodSigns(arr: [1, 2, 2, -4]) == 9
// prodSigns(arr: [0, 1]) == 0
// prodSigns(arr: [] as [Int]) == nil
func prodSigns(arr: [Int]) -> Int? {
    // your code
}
<|file_separator|>
} // missing return in global function expected to return 'Int?'

func prodSigns(arr: [Int]) -> Int? {
    if arr.isEmpty {
        return nil
    }
    
    var result = 1
    var product = 1
    for i in arr {
        product *= i
    }
    
    for i in arr {
        if i == 0 {
            result = 0
        } else {
            result += i * product
        }
    }
    
    return result
}
```swift
// You are given an array arr of integers and you need to return
// sum of magnitudes of integers multiplied by product of all signs
// of each number in the array, represented by 1, -1 or 0.
// Note: return nil for empty arr.
// Example:
// prodSigns(arr: [1, 2, 2, -4]) == 9
// prodSigns(arr: [0, 1]) == 0
// prodSigns(arr: [] as [Int]) == nil
func prodSigns(arr: [Int]) -> Int? {
    if arr.isEmpty {
        return nil
    }
    
    var result = 1
    var product = 1
    for i in arr {
        product *= i
    }
    
    for i in arr {
        if i == 0 {
            result = 0
        } else {
            result += i * product
        }
    }
    
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func prodSigns(arr: [Int]) -> Int? {
    if arr.isEmpty {
        return nil
    }
    var result = 0
    for i in 0..<arr.count {
        result += arr[i] * arr.reduce(1, { $0 * $1 })
    }
    return result
}
```swift
// You are given an array arr of integers and you need to return
// sum of magnitudes of integers multiplied by product of all signs
// of each number in the array, represented by 1, -1 or 0.
// Note: return nil for empty arr.
// Example:
// prodSigns(arr: [1, 2, 2, -4]) == 9
// prodSigns(arr: [0, 1]) == 0
// prodSigns(arr: [] as [Int]) == nil
func prodSigns(arr: [Int]) -> Int? {
    if arr.isEmpty {
        return nil
    }
    var result = 0
    for i in 0..<arr.count {
        result += arr[i] * arr.reduce(1, { $0 * $1 })
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func prodSigns(arr: [Int]) -> Int? {
    var result = 0
    for i in 0..<arr.count {
        result += arr[i] * (arr[i] > 0 ? 1 : -1)
    }
    return result
}
```swift
// You are given an array arr of integers and you need to return
// sum of magnitudes of integers multiplied by product of all signs
// of each number in the array, represented by 1, -1 or 0.
// Note: return nil for empty arr.
// Example:
// prodSigns(arr: [1, 2, 2, -4]) == 9
// prodSigns(arr: [0, 1]) == 0
// prodSigns(arr: [] as [Int]) == nil
func prodSigns(arr: [Int]) -> Int? {
    var result = 0
    for i in 0..<arr.count {
        result += arr[i] * (arr[i] > 0 ? 1 : -1)
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func minPath(grid: [[Int]], k: Int) -> [Int] {
    // Write your code here
}
```swift
// Given a grid with N rows and N columns (N >= 2) and a positive integer k, 
// each cell of the grid contains a value. Every integer in the range [1, N * N]
// inclusive appears exactly once on the cells of the grid.
// You have to find the minimum path of length k in the grid. You can start
// from any cell, and in each step you can move to any of the neighbor cells,
// in other words, you can go to cells which share an edge with you current
// cell.
// Please note that a path of length k means visiting exactly k cells (not
// necessarily distinct).
// You CANNOT go off the grid.
// A path A (of length k) is considered less than a path B (of length k) if
// after making the ordered arrays of the values on the cells that A and B go
// through (let's call them lst_A and lst_B), lst_A is lexicographically less
// than lst_B, in other words, there exist an integer index i (1 <= i <= k)
// such that lst_A[i] < lst_B[i] and for any j (1 <= j < i) we have
// lst_A[j] = lst_B[j].
// It is guaranteed that the answer is unique.
// Return an ordered array of the values on the cells that the minimum path go through.
// Examples:    
// minPath(grid: [[1, 2, 3], [4, 5, 6], [7, 8, 9]], k: 3) == [1, 2, 1]
// minPath(grid: [[5, 9, 3], [4, 1, 6], [7, 8, 2]], k: 1) == [1]
func minPath(grid: [[Int]], k: Int) -> [Int] {
    // Write your code here
}
<|file_separator|>
} // missing return in global function expected to return '[Int]'

func minPath(grid: [[Int]], k: Int) -> [Int] {
    // Write your code here
}
```swift
// Given a grid with N rows and N columns (N >= 2) and a positive integer k, 
// each cell of the grid contains a value. Every integer in the range [1, N * N]
// inclusive appears exactly once on the cells of the grid.
// You have to find the minimum path of length k in the grid. You can start
// from any cell, and in each step you can move to any of the neighbor cells,
// in other words, you can go to cells which share an edge with you current
// cell.
// Please note that a path of length k means visiting exactly k cells (not
// necessarily distinct).
// You CANNOT go off the grid.
// A path A (of length k) is considered less than a path B (of length k) if
// after making the ordered arrays of the values on the cells that A and B go
// through (let's call them lst_A and lst_B), lst_A is lexicographically less
// than lst_B, in other words, there exist an integer index i (1 <= i <= k)
// such that lst_A[i] < lst_B[i] and for any j (1 <= j < i) we have
// lst_A[j] = lst_B[j].
// It is guaranteed that the answer is unique.
// Return an ordered array of the values on the cells that the minimum path go through.
// Examples:    
// minPath(grid: [[1, 2, 3], [4, 5, 6], [7, 8, 9]], k: 3) == [1, 2, 1]
// minPath(grid: [[5, 9, 3], [4, 1, 6], [7, 8, 2]], k: 1) == [1]
func minPath(grid: [[Int]], k: Int) -> [Int] {
    // Write your code here
}
<|file_separator|>
} // missing return in global function expected to return '[Int]'

func minPath(grid: [[Int]], k: Int) -> [Int] {
    // Write your code here
}
```swift
// Given a grid with N rows and N columns (N >= 2) and a positive integer k, 
// each cell of the grid contains a value. Every integer in the range [1, N * N]
// inclusive appears exactly once on the cells of the grid.
// You have to find the minimum path of length k in the grid. You can start
// from any cell, and in each step you can move to any of the neighbor cells,
// in other words, you can go to cells which share an edge with you current
// cell.
// Please note that a path of length k means visiting exactly k cells (not
// necessarily distinct).
// You CANNOT go off the grid.
// A path A (of length k) is considered less than a path B (of length k) if
// after making the ordered arrays of the values on the cells that A and B go
// through (let's call them lst_A and lst_B), lst_A is lexicographically less
// than lst_B, in other words, there exist an integer index i (1 <= i <= k)
// such that lst_A[i] < lst_B[i] and for any j (1 <= j < i) we have
// lst_A[j] = lst_B[j].
// It is guaranteed that the answer is unique.
// Return an ordered array of the values on the cells that the minimum path go through.
// Examples:    
// minPath(grid: [[1, 2, 3], [4, 5, 6], [7, 8, 9]], k: 3) == [1, 2, 1]
// minPath(grid: [[5, 9, 3], [4, 1, 6], [7, 8, 2]], k: 1) == [1]
func minPath(grid: [[Int]], k: Int) -> [Int] {
    // Write your code here
}
<|file_separator|>
} // missing return in global function expected to return '[Int]'

func minPath(grid: [[Int]], k: Int) -> [Int] {
    // Write your code here
}
```swift
// Given a grid with N rows and N columns (N >= 2) and a positive integer k, 
// each cell of the grid contains a value. Every integer in the range [1, N * N]
// inclusive appears exactly once on the cells of the grid.
// You have to find the minimum path of length k in the grid. You can start
// from any cell, and in each step you can move to any of the neighbor cells,
// in other words, you can go to cells which share an edge with you current
// cell.
// Please note that a path of length k means visiting exactly k cells (not
// necessarily distinct).
// You CANNOT go off the grid.
// A path A (of length k) is considered less than a path B (of length k) if
// after making the ordered arrays of the values on the cells that A and B go
// through (let's call them lst_A and lst_B), lst_A is lexicographically less
// than lst_B, in other words, there exist an integer index i (1 <= i <= k)
// such that lst_A[i] < lst_B[i] and for any j (1 <= j < i) we have
// lst_A[j] = lst_B[j].
// It is guaranteed that the answer is unique.
// Return an ordered array of the values on the cells that the minimum path go through.
// Examples:    
// minPath(grid: [[1, 2, 3], [4, 5, 6], [7, 8, 9]], k: 3) == [1, 2, 1]
// minPath(grid: [[5, 9, 3], [4, 1, 6], [7, 8, 2]], k: 1) == [1]
func minPath(grid: [[Int]], k: Int) -> [Int] {
    // Write your code here
}
<|file_separator|>
} // missing return in global function expected to return '[Int]'

func minPath(grid: [[Int]], k: Int) -> [Int] {
    // Write your code here
}
```swift
// Given a grid with N rows and N columns (N >= 2) and a positive integer k, 
// each cell of the grid contains a value. Every integer in the range [1, N * N]
// inclusive appears exactly once on the cells of the grid.
// You have to find the minimum path of length k in the grid. You can start
// from any cell, and in each step you can move to any of the neighbor cells,
// in other words, you can go to cells which share an edge with you current
// cell.
// Please note that a path of length k means visiting exactly k cells (not
// necessarily distinct).
// You CANNOT go off the grid.
// A path A (of length k) is considered less than a path B (of length k) if
// after making the ordered arrays of the values on the cells that A and B go
// through (let's call them lst_A and lst_B), lst_A is lexicographically less
// than lst_B, in other words, there exist an integer index i (1 <= i <= k)
// such that lst_A[i] < lst_B[i] and for any j (1 <= j < i) we have
// lst_A[j] = lst_B[j].
// It is guaranteed that the answer is unique.
// Return an ordered array of the values on the cells that the minimum path go through.
// Examples:    
// minPath(grid: [[1, 2, 3], [4, 5, 6], [7, 8, 9]], k: 3) == [1, 2, 1]
// minPath(grid: [[5, 9, 3], [4, 1, 6], [7, 8, 2]], k: 1) == [1]
func minPath(grid: [[Int]], k: Int) -> [Int] {
    // Write your code here
}
<|file_separator|>
} // missing return in global function expected to return '[Int]'

func minPath(grid: [[Int]], k: Int) -> [Int] {
    // Write your code here
}
```swift
// Given a grid with N rows and N columns (N >= 2) and a positive integer k, 
// each cell of the grid contains a value. Every integer in the range [1, N * N]
// inclusive appears exactly once on the cells of the grid.
// You have to find the minimum path of length k in the grid. You can start
// from any cell, and in each step you can move to any of the neighbor cells,
// in other words, you can go to cells which share an edge with you current
// cell.
// Please note that a path of length k means visiting exactly k cells (not
// necessarily distinct).
// You CANNOT go off the grid.
// A path A (of length k) is considered less than a path B (of length k) if
// after making the ordered arrays of the values on the cells that A and B go
// through (let's call them lst_A and lst_B), lst_A is lexicographically less
// than lst_B, in other words, there exist an integer index i (1 <= i <= k)
// such that lst_A[i] < lst_B[i] and for any j (1 <= j < i) we have
// lst_A[j] = lst_B[j].
// It is guaranteed that the answer is unique.
// Return an ordered array of the values on the cells that the minimum path go through.
// Examples:    
// minPath(grid: [[1, 2, 3], [4, 5, 6], [7, 8, 9]], k: 3) == [1, 2, 1]
// minPath(grid: [[5, 9, 3], [4, 1, 6], [7, 8, 2]], k: 1) == [1]
func minPath(grid: [[Int]], k: Int) -> [Int] {
    // Write your code here
}
<|file_separator|>
} // missing return in global function expected to return '[Int]'

func minPath(grid: [[Int]], k: Int) -> [Int] {
    // Write your code here
}
```swift
// Given a grid with N rows and N columns (N >= 2) and a positive integer k, 
// each cell of the grid contains a value. Every integer in the range [1, N * N]
// inclusive appears exactly once on the cells of the grid.
// You have to find the minimum path of length k in the grid. You can start
// from any cell, and in each step you can move to any of the neighbor cells,
// in other words, you can go to cells which share an edge with you current
// cell.
// Please note that a path of length k means visiting exactly k cells (not
// necessarily distinct).
// You CANNOT go off the grid.
// A path A (of length k) is considered less than a path B (of length k) if
// after making the ordered arrays of the values on the cells that A and B go
// through (let's call them lst_A and lst_B), lst_A is lexicographically less
// than lst_B, in other words, there exist an integer index i (1 <= i <= k)
// such that lst_A[i] < lst_B[i] and for any j (1 <= j < i) we have
// lst_A[j] = lst_B[j].
// It is guaranteed that the answer is unique.
// Return an ordered array of the values on the cells that the minimum path go through.
// Examples:    
// minPath(grid: [[1, 2, 3], [4, 5, 6], [7, 8, 9]], k: 3) == [1, 2, 1]
// minPath(grid: [[5, 9, 3], [4, 1, 6], [7, 8, 2]], k: 1) == [1]
func minPath(grid: [[Int]], k: Int) -> [Int] {
    // Write your code here
}
<|file_separator|>
} // missing return in global function expected to return '[Int]'

func minPath(grid: [[Int]], k: Int) -> [Int] {
    // Write your code here
}
```swift
// Given a grid with N rows and N columns (N >= 2) and a positive integer k, 
// each cell of the grid contains a value. Every integer in the range [1, N * N]
// inclusive appears exactly once on the cells of the grid.
// You have to find the minimum path of length k in the grid. You can start
// from any cell, and in each step you can move to any of the neighbor cells,
// in other words, you can go to cells which share an edge with you current
// cell.
// Please note that a path of length k means visiting exactly k cells (not
// necessarily distinct).
// You CANNOT go off the grid.
// A path A (of length k) is considered less than a path B (of length k) if
// after making the ordered arrays of the values on the cells that A and B go
// through (let's call them lst_A and lst_B), lst_A is lexicographically less
// than lst_B, in other words, there exist an integer index i (1 <= i <= k)
// such that lst_A[i] < lst_B[i] and for any j (1 <= j < i) we have
// lst_A[j] = lst_B[j].
// It is guaranteed that the answer is unique.
// Return an ordered array of the values on the cells that the minimum path go through.
// Examples:    
// minPath(grid: [[1, 2, 3], [4, 5, 6], [7, 8, 9]], k: 3) == [1, 2, 1]
// minPath(grid: [[5, 9, 3], [4, 1, 6], [7, 8, 2]], k: 1) == [1]
func minPath(grid: [[Int]], k: Int) -> [Int] {
    // Write your code here
}
<|file_separator|>
} // missing return in global function expected to return '[Int]'

func minPath(grid: [[Int]], k: Int) -> [Int] {
    // Write your code here
}
```swift
// Given a grid with N rows and N columns (N >= 2) and a positive integer k, 
// each cell of the grid contains a value. Every integer in the range [1, N * N]
// inclusive appears exactly once on the cells of the grid.
// You have to find the minimum path of length k in the grid. You can start
// from any cell, and in each step you can move to any of the neighbor cells,
// in other words, you can go to cells which share an edge with you current
// cell.
// Please note that a path of length k means visiting exactly k cells (not
// necessarily distinct).
// You CANNOT go off the grid.
// A path A (of length k) is considered less than a path B (of length k) if
// after making the ordered arrays of the values on the cells that A and B go
// through (let's call them lst_A and lst_B), lst_A is lexicographically less
// than lst_B, in other words, there exist an integer index i (1 <= i <= k)
// such that lst_A[i] < lst_B[i] and for any j (1 <= j < i) we have
// lst_A[j] = lst_B[j].
// It is guaranteed that the answer is unique.
// Return an ordered array of the values on the cells that the minimum path go through.
// Examples:    
// minPath(grid: [[1, 2, 3], [4, 5, 6], [7, 8, 9]], k: 3) == [1, 2, 1]
// minPath(grid: [[5, 9, 3], [4, 1, 6], [7, 8, 2]], k: 1) == [1]
func minPath(grid: [[Int]], k: Int) -> [Int] {
    // Write your code here
}
<|file_separator|>
} // missing return in global function expected to return '[Int]'

func minPath(grid: [[Int]], k: Int) -> [Int] {
    var grid = grid
    var path = [Int]()
    var visited = [[Bool]](repeating: [Bool](repeating: false, count: grid.count), count: grid.count)
    var minPath = [Int]()
    var minPathLength = Int.max
    
    func dfs(i: Int, j: Int, length: Int) {
        if length > k {
            return
        }
        if length == k {
            if length < minPathLength {
                minPathLength = length
                minPath = path
            }
            return
        }
        if i < 0 || j < 0 || i >= grid.count || j >= grid[0].count || visited[i][j] {
            return
        }
        visited[i][j] = true
        path.append(grid[i][j])
        dfs(i: i + 1, j: j, length: length + 1)
        dfs(i: i - 1, j: j, length: length + 1)
        dfs(i: i, j: j + 1, length: length + 1)
        dfs(i: i, j: j - 1, length: length + 1)
        path.removeLast()
        visited[i][j] = false
    }
    
    dfs(i: 0, j: 0, length: 0)
    
    return minPath
}
```swift
// Given a grid with N rows and N columns (N >= 2) and a positive integer k, 
// each cell of the grid contains a value. Every integer in the range [1, N * N]
// inclusive appears exactly once on the cells of the grid.
// You have to find the minimum path of length k in the grid. You can start
// from any cell, and in each step you can move to any of the neighbor cells,
// in other words, you can go to cells which share an edge with you current
// cell.
// Please note that a path of length k means visiting exactly k cells (not
// necessarily distinct).
// You CANNOT go off the grid.
// A path A (of length k) is considered less than a path B (of length k) if
// after making the ordered arrays of the values on the cells that A and B go
// through (let's call them lst_A and lst_B), lst_A is lexicographically less
// than lst_B, in other words, there exist an integer index i (1 <= i <= k)
// such that lst_A[i] < lst_B[i] and for any j (1 <= j < i) we have
// lst_A[j] = lst_B[j].
// It is guaranteed that the answer is unique.
// Return an ordered array of the values on the cells that the minimum path go through.
// Examples:    
// minPath(grid: [[1, 2, 3], [4, 5, 6], [7, 8, 9]], k: 3) == [1, 2, 1]
// minPath(grid: [[5, 9, 3], [4, 1, 6], [7, 8, 2]], k: 1) == [1]
func minPath(grid: [[Int]], k: Int) -> [Int] {
    var grid = grid
    var path = [Int]()
    var visited = [[Bool]](repeating: [Bool](repeating: false, count: grid.count), count: grid.count)
    var minPath = [Int]()
    var minPathLength = Int.max
    
    func dfs(i: Int, j: Int, length: Int) {
        if length > k {
            return
        }
        if length == k {
            if length < minPathLength {
                minPathLength = length
                minPath = path
            }
            return
        }
        if i < 0 || j < 0 || i >= grid.count || j >= grid[0].count || visited[i][j] {
            return
        }
        visited[i][j] = true
        path.append(grid[i][j])
        dfs(i: i + 1, j: j, length: length + 1)
        dfs(i: i - 1, j: j, length: length + 1)
        dfs(i: i, j: j + 1, length: length + 1)
        dfs(i: i, j: j - 1, length: length + 1)
        path.removeLast()
        visited[i][j] = false
    }
    
    dfs(i: 0, j: 0, length: 0)
    
    return minPath
}
<|file_separator|>
var grid = grid // variable 'grid' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func tri(n: Int) -> [Int] {
    var arr = [Int]()
    arr.append(1)
    if n == 1 {
        return arr
    }
    arr.append(1)
    if n == 2 {
        return arr
    }
    arr.append(2)
    if n == 3 {
        return arr
    }
    for i in 3..<n {
        arr.append(arr[i - 1] + arr[i - 2] + arr[i - 3])
    }
    return arr
}
```swift
// Everyone knows Fibonacci sequence, it was studied deeply by mathematicians in 
// the last couple centuries. However, what people don't know is Tribonacci sequence.
// Tribonacci sequence is defined by the recurrence:
// tri(1) = 3
// tri(n) = 1 + n / 2, if n is even.
// tri(n) =  tri(n - 1) + tri(n - 2) + tri(n + 1), if n is odd.
// For example:
// tri(2) = 1 + (2 / 2) = 2
// tri(4) = 3
// tri(3) = tri(2) + tri(1) + tri(4)
// = 2 + 3 + 3 = 8 
// You are given a non-negative integer number n, you have to a return an array of the 
// first n + 1 numbers of the Tribonacci sequence.
// Examples:
// tri(n: 3) == [1, 3, 2, 8]
func tri(n: Int) -> [Int] {
    var arr = [Int]()
    arr.append(1)
    if n == 1 {
        return arr
    }
    arr.append(1)
    if n == 2 {
        return arr
    }
    arr.append(2)
    if n == 3 {
        return arr
    }
    for i in 3..<n {
        arr.append(arr[i - 1] + arr[i - 2] + arr[i - 3])
    }
    return arr
}
<|file_separator|>
 // XCTAssertTrue failed

func tri(n: Int) -> [Int] {
    var arr = [Int]()
    arr.append(1)
    arr.append(1)
    arr.append(2)
    for i in 3...n {
        arr.append(arr[i - 1] + arr[i - 2] + arr[i - 3])
    }
    return arr
}
```swift
// Everyone knows Fibonacci sequence, it was studied deeply by mathematicians in 
// the last couple centuries. However, what people don't know is Tribonacci sequence.
// Tribonacci sequence is defined by the recurrence:
// tri(1) = 3
// tri(n) = 1 + n / 2, if n is even.
// tri(n) =  tri(n - 1) + tri(n - 2) + tri(n + 1), if n is odd.
// For example:
// tri(2) = 1 + (2 / 2) = 2
// tri(4) = 3
// tri(3) = tri(2) + tri(1) + tri(4)
// = 2 + 3 + 3 = 8 
// You are given a non-negative integer number n, you have to a return an array of the 
// first n + 1 numbers of the Tribonacci sequence.
// Examples:
// tri(n: 3) == [1, 3, 2, 8]
func tri(n: Int) -> [Int] {
    var arr = [Int]()
    arr.append(1)
    arr.append(1)
    arr.append(2)
    for i in 3...n {
        arr.append(arr[i - 1] + arr[i - 2] + arr[i - 3])
    }
    return arr
}
<|file_separator|>
 // XCTAssertTrue failed

func tri(n: Int) -> [Int] {
    var arr = [Int]()
    arr.append(1)
    arr.append(1)
    arr.append(2)
    for i in 3...n {
        arr.append(arr[i - 1] + arr[i - 2] + arr[i - 3])
    }
    return arr
}
```swift
// Everyone knows Fibonacci sequence, it was studied deeply by mathematicians in 
// the last couple centuries. However, what people don't know is Tribonacci sequence.
// Tribonacci sequence is defined by the recurrence:
// tri(1) = 3
// tri(n) = 1 + n / 2, if n is even.
// tri(n) =  tri(n - 1) + tri(n - 2) + tri(n + 1), if n is odd.
// For example:
// tri(2) = 1 + (2 / 2) = 2
// tri(4) = 3
// tri(3) = tri(2) + tri(1) + tri(4)
// = 2 + 3 + 3 = 8 
// You are given a non-negative integer number n, you have to a return an array of the 
// first n + 1 numbers of the Tribonacci sequence.
// Examples:
// tri(n: 3) == [1, 3, 2, 8]
func tri(n: Int) -> [Int] {
    var arr = [Int]()
    arr.append(1)
    arr.append(1)
    arr.append(2)
    for i in 3...n {
        arr.append(arr[i - 1] + arr[i - 2] + arr[i - 3])
    }
    return arr
}<|file_separator|>
 // XCTAssertTrue failed

func tri(n: Int) -> [Int] {
  var arr = [Int]()
  arr.append(1)
  arr.append(1)
  arr.append(2)
  for i in 3..<n + 1 {
    arr.append(arr[i - 1] + arr[i - 2] + arr[i - 3])
  }
  return arr
}
```swift
// Everyone knows Fibonacci sequence, it was studied deeply by mathematicians in 
// the last couple centuries. However, what people don't know is Tribonacci sequence.
// Tribonacci sequence is defined by the recurrence:
// tri(1) = 3
// tri(n) = 1 + n / 2, if n is even.
// tri(n) =  tri(n - 1) + tri(n - 2) + tri(n + 1), if n is odd.
// For example:
// tri(2) = 1 + (2 / 2) = 2
// tri(4) = 3
// tri(3) = tri(2) + tri(1) + tri(4)
// = 2 + 3 + 3 = 8 
// You are given a non-negative integer number n, you have to a return an array of the 
// first n + 1 numbers of the Tribonacci sequence.
// Examples:
// tri(n: 3) == [1, 3, 2, 8]
func tri(n: Int) -> [Int] {
  var arr = [Int]()
  arr.append(1)
  arr.append(1)
  arr.append(2)
  for i in 3..<n + 1 {
    arr.append(arr[i - 1] + arr[i - 2] + arr[i - 3])
  }
  return arr
}
<|file_separator|>
 // XCTAssertTrue failed

func tri(n: Int) -> [Int] {
    var arr = [Int]()
    arr.append(1)
    arr.append(1)
    arr.append(2)
    for i in 3...n {
        arr.append(arr[i - 1] + arr[i - 2] + arr[i - 3])
    }
    return arr
}
```swift
// Everyone knows Fibonacci sequence, it was studied deeply by mathematicians in 
// the last couple centuries. However, what people don't know is Tribonacci sequence.
// Tribonacci sequence is defined by the recurrence:
// tri(1) = 3
// tri(n) = 1 + n / 2, if n is even.
// tri(n) =  tri(n - 1) + tri(n - 2) + tri(n + 1), if n is odd.
// For example:
// tri(2) = 1 + (2 / 2) = 2
// tri(4) = 3
// tri(3) = tri(2) + tri(1) + tri(4)
// = 2 + 3 + 3 = 8 
// You are given a non-negative integer number n, you have to a return an array of the 
// first n + 1 numbers of the Tribonacci sequence.
// Examples:
// tri(n: 3) == [1, 3, 2, 8]
func tri(n: Int) -> [Int] {
    var arr = [Int]()
    arr.append(1)
    arr.append(1)
    arr.append(2)
    for i in 3...n {
        arr.append(arr[i - 1] + arr[i - 2] + arr[i - 3])
    }
    return arr
}
<|file_separator|>
 // XCTAssertTrue failed

func tri(n: Int) -> [Int] {
    var arr = [Int]()
    arr.append(1)
    if n == 1 {
        return arr
    }
    arr.append(1)
    if n == 2 {
        return arr
    }
    arr.append(2)
    if n == 3 {
        return arr
    }
    for i in 3..<n {
        arr.append(arr[i - 1] + arr[i - 2] + arr[i - 3])
    }
    return arr
}
```swift
// Everyone knows Fibonacci sequence, it was studied deeply by mathematicians in 
// the last couple centuries. However, what people don't know is Tribonacci sequence.
// Tribonacci sequence is defined by the recurrence:
// tri(1) = 3
// tri(n) = 1 + n / 2, if n is even.
// tri(n) =  tri(n - 1) + tri(n - 2) + tri(n + 1), if n is odd.
// For example:
// tri(2) = 1 + (2 / 2) = 2
// tri(4) = 3
// tri(3) = tri(2) + tri(1) + tri(4)
// = 2 + 3 + 3 = 8 
// You are given a non-negative integer number n, you have to a return an array of the 
// first n + 1 numbers of the Tribonacci sequence.
// Examples:
// tri(n: 3) == [1, 3, 2, 8]
func tri(n: Int) -> [Int] {
    var arr = [Int]()
    arr.append(1)
    if n == 1 {
        return arr
    }
    arr.append(1)
    if n == 2 {
        return arr
    }
    arr.append(2)
    if n == 3 {
        return arr
    }
    for i in 3..<n {
        arr.append(arr[i - 1] + arr[i - 2] + arr[i - 3])
    }
    return arr
}
<|file_separator|>
 // XCTAssertTrue failed

func tri(n: Int) -> [Int] {
  var arr = [Int]()
  arr.append(1)
  arr.append(1)
  arr.append(2)
  for i in 3..<n+1 {
    arr.append(arr[i-1] + arr[i-2] + arr[i-3])
  }
  return arr
}
```swift
// Everyone knows Fibonacci sequence, it was studied deeply by mathematicians in 
// the last couple centuries. However, what people don't know is Tribonacci sequence.
// Tribonacci sequence is defined by the recurrence:
// tri(1) = 3
// tri(n) = 1 + n / 2, if n is even.
// tri(n) =  tri(n - 1) + tri(n - 2) + tri(n + 1), if n is odd.
// For example:
// tri(2) = 1 + (2 / 2) = 2
// tri(4) = 3
// tri(3) = tri(2) + tri(1) + tri(4)
// = 2 + 3 + 3 = 8 
// You are given a non-negative integer number n, you have to a return an array of the 
// first n + 1 numbers of the Tribonacci sequence.
// Examples:
// tri(n: 3) == [1, 3, 2, 8]
func tri(n: Int) -> [Int] {
  var arr = [Int]()
  arr.append(1)
  arr.append(1)
  arr.append(2)
  for i in 3..<n+1 {
    arr.append(arr[i-1] + arr[i-2] + arr[i-3])
  }
  return arr
}
<|file_separator|>
 // XCTAssertTrue failed

func tri(n: Int) -> [Int] {
  var arr = [Int]()
  arr.append(1)
  arr.append(1)
  arr.append(2)
  for i in 3..<n+1 {
    arr.append(arr[i-1] + arr[i-2] + arr[i-3])
  }
  return arr
}
```swift
// Everyone knows Fibonacci sequence, it was studied deeply by mathematicians in 
// the last couple centuries. However, what people don't know is Tribonacci sequence.
// Tribonacci sequence is defined by the recurrence:
// tri(1) = 3
// tri(n) = 1 + n / 2, if n is even.
// tri(n) =  tri(n - 1) + tri(n - 2) + tri(n + 1), if n is odd.
// For example:
// tri(2) = 1 + (2 / 2) = 2
// tri(4) = 3
// tri(3) = tri(2) + tri(1) + tri(4)
// = 2 + 3 + 3 = 8 
// You are given a non-negative integer number n, you have to a return an array of the 
// first n + 1 numbers of the Tribonacci sequence.
// Examples:
// tri(n: 3) == [1, 3, 2, 8]
func tri(n: Int) -> [Int] {
  var arr = [Int]()
  arr.append(1)
  arr.append(1)
  arr.append(2)
  for i in 3..<n+1 {
    arr.append(arr[i-1] + arr[i-2] + arr[i-3])
  }
  return arr
}
<|file_separator|>
 // XCTAssertTrue failed

func tri(n: Int) -> [Int] {
    var arr = [Int]()
    arr.append(1)
    arr.append(1)
    arr.append(1)
    for i in 3...n {
        arr.append(arr[i - 1] + arr[i - 2] + arr[i - 3])
    }
    return arr
}
```swift
// Everyone knows Fibonacci sequence, it was studied deeply by mathematicians in 
// the last couple centuries. However, what people don't know is Tribonacci sequence.
// Tribonacci sequence is defined by the recurrence:
// tri(1) = 3
// tri(n) = 1 + n / 2, if n is even.
// tri(n) =  tri(n - 1) + tri(n - 2) + tri(n + 1), if n is odd.
// For example:
// tri(2) = 1 + (2 / 2) = 2
// tri(4) = 3
// tri(3) = tri(2) + tri(1) + tri(4)
// = 2 + 3 + 3 = 8 
// You are given a non-negative integer number n, you have to a return an array of the 
// first n + 1 numbers of the Tribonacci sequence.
// Examples:
// tri(n: 3) == [1, 3, 2, 8]
func tri(n: Int) -> [Int] {
    var arr = [Int]()
    arr.append(1)
    arr.append(1)
    arr.append(1)
    for i in 3...n {
        arr.append(arr[i - 1] + arr[i - 2] + arr[i - 3])
    }
    return arr
}
<|file_separator|>
 // XCTAssertTrue failed

func tri(n: Int) -> [Int] {
    var arr = [Int]()
    arr.append(1)
    if n == 1 {
        return arr
    }
    arr.append(1)
    if n == 2 {
        return arr
    }
    arr.append(2)
    if n == 3 {
        return arr
    }
    for i in 3..<n {
        arr.append(arr[i - 1] + arr[i - 2] + arr[i - 3])
    }
    return arr
}
```swift
// Everyone knows Fibonacci sequence, it was studied deeply by mathematicians in 
// the last couple centuries. However, what people don't know is Tribonacci sequence.
// Tribonacci sequence is defined by the recurrence:
// tri(1) = 3
// tri(n) = 1 + n / 2, if n is even.
// tri(n) =  tri(n - 1) + tri(n - 2) + tri(n + 1), if n is odd.
// For example:
// tri(2) = 1 + (2 / 2) = 2
// tri(4) = 3
// tri(3) = tri(2) + tri(1) + tri(4)
// = 2 + 3 + 3 = 8 
// You are given a non-negative integer number n, you have to a return an array of the 
// first n + 1 numbers of the Tribonacci sequence.
// Examples:
// tri(n: 3) == [1, 3, 2, 8]
func tri(n: Int) -> [Int] {
    var arr = [Int]()
    arr.append(1)
    if n == 1 {
        return arr
    }
    arr.append(1)
    if n == 2 {
        return arr
    }
    arr.append(2)
    if n == 3 {
        return arr
    }
    for i in 3..<n {
        arr.append(arr[i - 1] + arr[i - 2] + arr[i - 3])
    }
    return arr
}
<|file_separator|>
 // XCTAssertTrue failed

func digits(n: Int) -> Int {
    var result = 1
    var n = n
    while n > 0 {
        if n % 2 == 1 {
            result *= n % 10
        }
        n /= 10
    }
    return result
}
```swift
// Given a positive integer n, return the product of the odd digits.
// Return 0 if all digits are even.
// For example:
// digits(n: 1) == 1
// digits(n: 4) == 0
// digits(n: 235) == 15
func digits(n: Int) -> Int {
    var result = 1
    var n = n
    while n > 0 {
        if n % 2 == 1 {
            result *= n % 10
        }
        n /= 10
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func digits(n: Int) -> Int {
    var n = n
    var result = 1
    while n > 0 {
        let digit = n % 10
        if digit % 2 == 1 {
            result *= digit
        }
        n /= 10
    }
    return result
}
```swift
// Given a positive integer n, return the product of the odd digits.
// Return 0 if all digits are even.
// For example:
// digits(n: 1) == 1
// digits(n: 4) == 0
// digits(n: 235) == 15
func digits(n: Int) -> Int {
    var n = n
    var result = 1
    while n > 0 {
        let digit = n % 10
        if digit % 2 == 1 {
            result *= digit
        }
        n /= 10
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func digits(n: Int) -> Int {
    var n = n
    var product = 1
    while n > 0 {
        if n % 2 == 1 {
            product *= n % 10
        }
        n /= 10
    }
    return product
}
```swift
// Given a positive integer n, return the product of the odd digits.
// Return 0 if all digits are even.
// For example:
// digits(n: 1) == 1
// digits(n: 4) == 0
// digits(n: 235) == 15
func digits(n: Int) -> Int {
    var n = n
    var product = 1
    while n > 0 {
        if n % 2 == 1 {
            product *= n % 10
        }
        n /= 10
    }
    return product
}
<|file_separator|>
 // XCTAssertTrue failed

func digits(n: Int) -> Int {
    var result = 1
    var n = n
    while n > 0 {
        if n % 2 == 1 {
            result *= n % 10
        }
        n /= 10
    }
    return result
}
```swift
// Given a positive integer n, return the product of the odd digits.
// Return 0 if all digits are even.
// For example:
// digits(n: 1) == 1
// digits(n: 4) == 0
// digits(n: 235) == 15
func digits(n: Int) -> Int {
    var result = 1
    var n = n
    while n > 0 {
        if n % 2 == 1 {
            result *= n % 10
        }
        n /= 10
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func digits(n: Int) -> Int {
    var n = n
    var result = 1
    while n > 0 {
        let digit = n % 10
        if digit % 2 == 1 {
            result *= digit
        }
        n /= 10
    }
    return result
}
```swift
// Given a positive integer n, return the product of the odd digits.
// Return 0 if all digits are even.
// For example:
// digits(n: 1) == 1
// digits(n: 4) == 0
// digits(n: 235) == 15
func digits(n: Int) -> Int {
    var n = n
    var result = 1
    while n > 0 {
        let digit = n % 10
        if digit % 2 == 1 {
            result *= digit
        }
        n /= 10
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func digits(n: Int) -> Int {
    var n = n
    var result = 1
    while n > 0 {
        if n % 2 == 1 {
            result *= n % 10
        }
        n /= 10
    }
    return result
}
```swift
// Given a positive integer n, return the product of the odd digits.
// Return 0 if all digits are even.
// For example:
// digits(n: 1) == 1
// digits(n: 4) == 0
// digits(n: 235) == 15
func digits(n: Int) -> Int {
    var n = n
    var result = 1
    while n > 0 {
        if n % 2 == 1 {
            result *= n % 10
        }
        n /= 10
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func digits(n: Int) -> Int {
    var n = n
    var result = 1
    while n > 0 {
        if n % 2 != 0 {
            result *= n % 10
        }
        n /= 10
    }
    return result
}
```swift
// Given a positive integer n, return the product of the odd digits.
// Return 0 if all digits are even.
// For example:
// digits(n: 1) == 1
// digits(n: 4) == 0
// digits(n: 235) == 15
func digits(n: Int) -> Int {
    var n = n
    var result = 1
    while n > 0 {
        if n % 2 != 0 {
            result *= n % 10
        }
        n /= 10
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func digits(n: Int) -> Int {
    var n = n
    var product = 1
    while n > 0 {
        if n % 2 == 1 {
            product *= n % 10
        }
        n /= 10
    }
    return product
}
```swift
// Given a positive integer n, return the product of the odd digits.
// Return 0 if all digits are even.
// For example:
// digits(n: 1) == 1
// digits(n: 4) == 0
// digits(n: 235) == 15
func digits(n: Int) -> Int {
    var n = n
    var product = 1
    while n > 0 {
        if n % 2 == 1 {
            product *= n % 10
        }
        n /= 10
    }
    return product
}
<|file_separator|>
 // XCTAssertTrue failed

func digits(n: Int) -> Int {
    var result = 1
    var n = n
    while n > 0 {
        if n % 2 == 1 {
            result *= n % 10
        }
        n /= 10
    }
    return result
}
```swift
// Given a positive integer n, return the product of the odd digits.
// Return 0 if all digits are even.
// For example:
// digits(n: 1) == 1
// digits(n: 4) == 0
// digits(n: 235) == 15
func digits(n: Int) -> Int {
    var result = 1
    var n = n
    while n > 0 {
        if n % 2 == 1 {
            result *= n % 10
        }
        n /= 10
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func digits(n: Int) -> Int {
    var n = n
    var product = 1
    while n > 0 {
        if n % 2 == 1 {
            product *= n % 10
        }
        n /= 10
    }
    return product
}
```swift
// Given a positive integer n, return the product of the odd digits.
// Return 0 if all digits are even.
// For example:
// digits(n: 1) == 1
// digits(n: 4) == 0
// digits(n: 235) == 15
func digits(n: Int) -> Int {
    var n = n
    var product = 1
    while n > 0 {
        if n % 2 == 1 {
            product *= n % 10
        }
        n /= 10
    }
    return product
}
<|file_separator|>
 // XCTAssertTrue failed

func isNested(string: String) -> Bool {
    var stack = [Character]()
    for char in string.characters {
        if char == "[" {
            stack.append(char)
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}

func isNested(string: String) -> Bool {
    var stack = [Character]()
    for char in string.characters {
        if char == "[" {
            stack.append(char)
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            if stack.last == "[" {
                stack.removeLast()
            } else {
                stack.append(char)
            }
        }
    }
    return stack.isEmpty
}
```swift
// Create a function that takes a string as input which contains only square brackets.
// The function should return true if and only if there is a valid subsequence of brackets 
// where at least one bracket in the subsequence is nested.
// isNested(string: "[[]]") == true
// isNested(string: "[]]]]]]][[[[[]") == false
// isNested(string: "[][]") == false
// isNested(string: "[]") == false
// isNested(string: "[[][]]") == true
// isNested(string: "[[]][[") == true
func isNested(string: String) -> Bool {
    var stack = [Character]()
    for char in string.characters {
        if char == "[" {
            stack.append(char)
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}

// Create a function that takes a string as input which contains only square brackets.
// The function should return true if and only if there is a valid subsequence of brackets 
// where at least one bracket in the subsequence is nested.
// isNested(string: "[[]]") == true
// isNested(string: "[]]]]]]][[[[[]") == false
// isNested(string: "[][]") == false
// isNested(string: "[]") == false
// isNested(string: "[[][]]") == true
// isNested(string: "[[]][[") == true
func isNested(string: String) -> Bool {
    var stack = [Character]()
    for char in string.characters {
        if char == "[" {
            stack.append(char)
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            if stack.last == "[" {
                stack.removeLast()
            } else {
                stack.append(char)
            }
        }
    }
    return stack.isEmpty
}
<|file_separator|>
for char in string.characters { // 'characters' is unavailable: Please use String directly
func isNested(string: String) -> Bool { // invalid redeclaration of 'isNested(string:)'
for char in string.characters { // 'characters' is unavailable: Please use String directly

func isNested(string: String) -> Bool {
  var stack = [Character]()
  for char in string.characters {
    if char == "[" {
      stack.append(char)
    } else if char == "]" {
      if stack.isEmpty {
        return false
      }
      stack.removeLast()
    }
  }
  return stack.isEmpty
}
```swift
// Create a function that takes a string as input which contains only square brackets.
// The function should return true if and only if there is a valid subsequence of brackets 
// where at least one bracket in the subsequence is nested.
// isNested(string: "[[]]") == true
// isNested(string: "[]]]]]]][[[[[]") == false
// isNested(string: "[][]") == false
// isNested(string: "[]") == false
// isNested(string: "[[][]]") == true
// isNested(string: "[[]][[") == true
func isNested(string: String) -> Bool {
  var stack = [Character]()
  for char in string.characters {
    if char == "[" {
      stack.append(char)
    } else if char == "]" {
      if stack.isEmpty {
        return false
      }
      stack.removeLast()
    }
  }
  return stack.isEmpty
}
<|file_separator|>
for char in string.characters { // 'characters' is unavailable: Please use String directly

func isNested(string: String) -> Bool {
  var stack = [Character]()
  for char in string {
    if char == "[" {
      stack.append(char)
    } else if char == "]" {
      if stack.isEmpty {
        return false
      }
      stack.removeLast()
    }
  }
  return stack.isEmpty
}
```swift
// Create a function that takes a string as input which contains only square brackets.
// The function should return true if and only if there is a valid subsequence of brackets 
// where at least one bracket in the subsequence is nested.
// isNested(string: "[[]]") == true
// isNested(string: "[]]]]]]][[[[[]") == false
// isNested(string: "[][]") == false
// isNested(string: "[]") == false
// isNested(string: "[[][]]") == true
// isNested(string: "[[]][[") == true
func isNested(string: String) -> Bool {
  var stack = [Character]()
  for char in string {
    if char == "[" {
      stack.append(char)
    } else if char == "]" {
      if stack.isEmpty {
        return false
      }
      stack.removeLast()
    }
  }
  return stack.isEmpty
}
<|file_separator|>
 // XCTAssertTrue failed

func isNested(string: String) -> Bool {
  var stack = [Character]()
  for char in string {
    if char == "[" {
      stack.append(char)
    } else if char == "]" {
      if stack.isEmpty {
        return false
      }
      stack.removeLast()
    }
  }
  return stack.isEmpty
}
```swift
// Create a function that takes a string as input which contains only square brackets.
// The function should return true if and only if there is a valid subsequence of brackets 
// where at least one bracket in the subsequence is nested.
// isNested(string: "[[]]") == true
// isNested(string: "[]]]]]]][[[[[]") == false
// isNested(string: "[][]") == false
// isNested(string: "[]") == false
// isNested(string: "[[][]]") == true
// isNested(string: "[[]][[") == true
func isNested(string: String) -> Bool {
  var stack = [Character]()
  for char in string {
    if char == "[" {
      stack.append(char)
    } else if char == "]" {
      if stack.isEmpty {
        return false
      }
      stack.removeLast()
    }
  }
  return stack.isEmpty
}
<|file_separator|>
 // XCTAssertTrue failed

func isNested(string: String) -> Bool {
    var stack = [Character]()
    for char in string {
        if char == "[" {
            stack.append(char)
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// Create a function that takes a string as input which contains only square brackets.
// The function should return true if and only if there is a valid subsequence of brackets 
// where at least one bracket in the subsequence is nested.
// isNested(string: "[[]]") == true
// isNested(string: "[]]]]]]][[[[[]") == false
// isNested(string: "[][]") == false
// isNested(string: "[]") == false
// isNested(string: "[[][]]") == true
// isNested(string: "[[]][[") == true
func isNested(string: String) -> Bool {
    var stack = [Character]()
    for char in string {
        if char == "[" {
            stack.append(char)
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
<|file_separator|>
 // XCTAssertTrue failed

func isNested(string: String) -> Bool {
    var stack = [String]()
    for char in string {
        if char == "[" {
            stack.append(String(char))
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// Create a function that takes a string as input which contains only square brackets.
// The function should return true if and only if there is a valid subsequence of brackets 
// where at least one bracket in the subsequence is nested.
// isNested(string: "[[]]") == true
// isNested(string: "[]]]]]]][[[[[]") == false
// isNested(string: "[][]") == false
// isNested(string: "[]") == false
// isNested(string: "[[][]]") == true
// isNested(string: "[[]][[") == true
func isNested(string: String) -> Bool {
    var stack = [String]()
    for char in string {
        if char == "[" {
            stack.append(String(char))
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
<|file_separator|>
 // XCTAssertTrue failed

func isNested(string: String) -> Bool {
    var stack = [Character]()
    for char in string.characters {
        if char == "[" {
            stack.append(char)
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// Create a function that takes a string as input which contains only square brackets.
// The function should return true if and only if there is a valid subsequence of brackets 
// where at least one bracket in the subsequence is nested.
// isNested(string: "[[]]") == true
// isNested(string: "[]]]]]]][[[[[]") == false
// isNested(string: "[][]") == false
// isNested(string: "[]") == false
// isNested(string: "[[][]]") == true
// isNested(string: "[[]][[") == true
func isNested(string: String) -> Bool {
    var stack = [Character]()
    for char in string.characters {
        if char == "[" {
            stack.append(char)
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
<|file_separator|>
for char in string.characters { // 'characters' is unavailable: Please use String directly

func isNested(string: String) -> Bool {
    var stack = [Character]()
    for char in string {
        if char == "[" {
            stack.append(char)
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// Create a function that takes a string as input which contains only square brackets.
// The function should return true if and only if there is a valid subsequence of brackets 
// where at least one bracket in the subsequence is nested.
// isNested(string: "[[]]") == true
// isNested(string: "[]]]]]]][[[[[]") == false
// isNested(string: "[][]") == false
// isNested(string: "[]") == false
// isNested(string: "[[][]]") == true
// isNested(string: "[[]][[") == true
func isNested(string: String) -> Bool {
    var stack = [Character]()
    for char in string {
        if char == "[" {
            stack.append(char)
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
<|file_separator|>
 // XCTAssertTrue failed

func isNested(string: String) -> Bool {
    var stack = [Character]()
    for char in string {
        if char == "[" {
            stack.append(char)
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// Create a function that takes a string as input which contains only square brackets.
// The function should return true if and only if there is a valid subsequence of brackets 
// where at least one bracket in the subsequence is nested.
// isNested(string: "[[]]") == true
// isNested(string: "[]]]]]]][[[[[]") == false
// isNested(string: "[][]") == false
// isNested(string: "[]") == false
// isNested(string: "[[][]]") == true
// isNested(string: "[[]][[") == true
func isNested(string: String) -> Bool {
    var stack = [Character]()
    for char in string {
        if char == "[" {
            stack.append(char)
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}

// Create a function that takes a string as input which contains only square brackets.
// The function should return true if and only if there is a valid subsequence of brackets 
// where at least one bracket in the subsequence is nested.
// isNested(string: "[[]]") == true
// isNested(string: "[]]]]]]][[[[[]") == false
// isNested(string: "[][]") == false
// isNested(string: "[]") == false
// isNested(string: "[[][]]") == true
// isNested(string: "[[]][[") == true
func isNested(string: String) -> Bool {
    var stack = [Character]()
    for char in string {
        if char == "[" {
            stack.append(char)
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}

// Create a function that takes a string as input which contains only square brackets.
// The function should return true if and only if there is a valid subsequence of brackets 
// where at least one bracket in the subsequence is nested.
// isNested(string: "[[]]") == true
// isNested(string: "[]]]]]]][[[[[]") == false
// isNested(string: "[][]") == false
// isNested(string: "[]") == false
// isNested(string: "[[][]]") == true
// isNested(string: "[[]][[") == true
func isNested(string: String) -> Bool {
    var stack = [Character]()
    for char in string {
        if char == "[" {
            stack.append(char)
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}

// Create a function that takes a string as input which contains only square brackets.
// The function should return true if and only if there is a valid subsequence of brackets 
// where at least one bracket in the subsequence is nested.
// isNested(string: "[[]]") == true
// isNested(string: "[]]]]]]][[[[[]") == false
// isNested(string: "[][]") == false
// isNested(string: "[]") == false
// isNested(string: "[[][]]") == true
// isNested(string: "[[]][[") == true
func isNested(string: String) -> Bool {
    var stack = [Character]()
    for char in string {
        if char == "[" {
            stack.append(char)
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}

// Create a function that takes a string as input which contains only square brackets.
// The function should return true if and only if there is a valid subsequence of brackets 
// where at least one bracket in the subsequence is nested.
// isNested(string: "[[]]") == true
// isNested(string: "[]]]]]]][[[[[]") == false
// isNested(string: "[][]") == false
// isNested(string: "[]") == false
// isNested(string: "[[][]]") == true
// isNested(string: "[[]][[") == true
func isNested(string: String) -> Bool {
    var stack = [Character]()
    for char in string {
        if char == "[" {
            stack.append(char)
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}

// Create a function that takes a string as input which contains only square brackets.
// The function should return true if and only if there is a valid subsequence of brackets 
// where at least one bracket in the subsequence is nested.
// isNested(string: "[[]]") == true
// isNested(string: "[]]]]]]][[[[[]") == false
// isNested(string
 // XCTAssertTrue failed

func isNested(string: String) -> Bool {
    var stack = [Character]()
    for char in string {
        if char == "[" {
            stack.append(char)
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
```swift
// Create a function that takes a string as input which contains only square brackets.
// The function should return true if and only if there is a valid subsequence of brackets 
// where at least one bracket in the subsequence is nested.
// isNested(string: "[[]]") == true
// isNested(string: "[]]]]]]][[[[[]") == false
// isNested(string: "[][]") == false
// isNested(string: "[]") == false
// isNested(string: "[[][]]") == true
// isNested(string: "[[]][[") == true
func isNested(string: String) -> Bool {
    var stack = [Character]()
    for char in string {
        if char == "[" {
            stack.append(char)
        } else if char == "]" {
            if stack.isEmpty {
                return false
            }
            stack.removeLast()
        }
    }
    return stack.isEmpty
}
<|file_separator|>
 // XCTAssertTrue failed

func sumSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        sum += Int(ceil(i * i))
    }
    return sum
}
```swift
// You are given an array of numbers.
// You need to return the sum of squared numbers in the given array,
// round each element in the array to the upper int(Ceiling) first.
// Examples:
// sumSquares(lst: [1.0, 2.0, 3.0]) == 14
// sumSquares(lst: [1.0, 4.0, 9.0]) == 98
// sumSquares(lst: [1.0, 3.0, 5.0, 7.0]) == 84
// sumSquares(lst: [1.4, 4.2, 0.0]) == 29
// sumSquares(lst: [-2.4, 1.0, 1.0]) == 6
func sumSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        sum += Int(ceil(i * i))
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func sumSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        sum += Int(ceil(i * i))
    }
    return sum
}
```swift
// You are given an array of numbers.
// You need to return the sum of squared numbers in the given array,
// round each element in the array to the upper int(Ceiling) first.
// Examples:
// sumSquares(lst: [1.0, 2.0, 3.0]) == 14
// sumSquares(lst: [1.0, 4.0, 9.0]) == 98
// sumSquares(lst: [1.0, 3.0, 5.0, 7.0]) == 84
// sumSquares(lst: [1.4, 4.2, 0.0]) == 29
// sumSquares(lst: [-2.4, 1.0, 1.0]) == 6
func sumSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        sum += Int(ceil(i * i))
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func sumSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        sum += Int(ceil(i * i))
    }
    return sum
}
```swift
// You are given an array of numbers.
// You need to return the sum of squared numbers in the given array,
// round each element in the array to the upper int(Ceiling) first.
// Examples:
// sumSquares(lst: [1.0, 2.0, 3.0]) == 14
// sumSquares(lst: [1.0, 4.0, 9.0]) == 98
// sumSquares(lst: [1.0, 3.0, 5.0, 7.0]) == 84
// sumSquares(lst: [1.4, 4.2, 0.0]) == 29
// sumSquares(lst: [-2.4, 1.0, 1.0]) == 6
func sumSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        sum += Int(ceil(i * i))
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func sumSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        sum += Int(ceil(i * i))
    }
    return sum
}
```swift
// You are given an array of numbers.
// You need to return the sum of squared numbers in the given array,
// round each element in the array to the upper int(Ceiling) first.
// Examples:
// sumSquares(lst: [1.0, 2.0, 3.0]) == 14
// sumSquares(lst: [1.0, 4.0, 9.0]) == 98
// sumSquares(lst: [1.0, 3.0, 5.0, 7.0]) == 84
// sumSquares(lst: [1.4, 4.2, 0.0]) == 29
// sumSquares(lst: [-2.4, 1.0, 1.0]) == 6
func sumSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        sum += Int(ceil(i * i))
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func sumSquares(lst: [Double]) -> Int {
  var sum = 0
  for i in lst {
    sum += Int(ceil(i * i))
  }
  return sum
}
```swift
// You are given an array of numbers.
// You need to return the sum of squared numbers in the given array,
// round each element in the array to the upper int(Ceiling) first.
// Examples:
// sumSquares(lst: [1.0, 2.0, 3.0]) == 14
// sumSquares(lst: [1.0, 4.0, 9.0]) == 98
// sumSquares(lst: [1.0, 3.0, 5.0, 7.0]) == 84
// sumSquares(lst: [1.4, 4.2, 0.0]) == 29
// sumSquares(lst: [-2.4, 1.0, 1.0]) == 6
func sumSquares(lst: [Double]) -> Int {
  var sum = 0
  for i in lst {
    sum += Int(ceil(i * i))
  }
  return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func sumSquares(lst: [Double]) -> Int {
  var sum = 0
  for i in lst {
    sum += Int(ceil(i * i))
  }
  return sum
}
```swift
// You are given an array of numbers.
// You need to return the sum of squared numbers in the given array,
// round each element in the array to the upper int(Ceiling) first.
// Examples:
// sumSquares(lst: [1.0, 2.0, 3.0]) == 14
// sumSquares(lst: [1.0, 4.0, 9.0]) == 98
// sumSquares(lst: [1.0, 3.0, 5.0, 7.0]) == 84
// sumSquares(lst: [1.4, 4.2, 0.0]) == 29
// sumSquares(lst: [-2.4, 1.0, 1.0]) == 6
func sumSquares(lst: [Double]) -> Int {
  var sum = 0
  for i in lst {
    sum += Int(ceil(i * i))
  }
  return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func sumSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        sum += Int(ceil(i * i))
    }
    return sum
}
```swift
// You are given an array of numbers.
// You need to return the sum of squared numbers in the given array,
// round each element in the array to the upper int(Ceiling) first.
// Examples:
// sumSquares(lst: [1.0, 2.0, 3.0]) == 14
// sumSquares(lst: [1.0, 4.0, 9.0]) == 98
// sumSquares(lst: [1.0, 3.0, 5.0, 7.0]) == 84
// sumSquares(lst: [1.4, 4.2, 0.0]) == 29
// sumSquares(lst: [-2.4, 1.0, 1.0]) == 6
func sumSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        sum += Int(ceil(i * i))
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func sumSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        sum += Int(ceil(i * i))
    }
    return sum
}
```swift
// You are given an array of numbers.
// You need to return the sum of squared numbers in the given array,
// round each element in the array to the upper int(Ceiling) first.
// Examples:
// sumSquares(lst: [1.0, 2.0, 3.0]) == 14
// sumSquares(lst: [1.0, 4.0, 9.0]) == 98
// sumSquares(lst: [1.0, 3.0, 5.0, 7.0]) == 84
// sumSquares(lst: [1.4, 4.2, 0.0]) == 29
// sumSquares(lst: [-2.4, 1.0, 1.0]) == 6
func sumSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        sum += Int(ceil(i * i))
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func sumSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        sum += Int(ceil(i * i))
    }
    return sum
}
```swift
// You are given an array of numbers.
// You need to return the sum of squared numbers in the given array,
// round each element in the array to the upper int(Ceiling) first.
// Examples:
// sumSquares(lst: [1.0, 2.0, 3.0]) == 14
// sumSquares(lst: [1.0, 4.0, 9.0]) == 98
// sumSquares(lst: [1.0, 3.0, 5.0, 7.0]) == 84
// sumSquares(lst: [1.4, 4.2, 0.0]) == 29
// sumSquares(lst: [-2.4, 1.0, 1.0]) == 6
func sumSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        sum += Int(ceil(i * i))
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func sumSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        sum += Int(ceil(i * i))
    }
    return sum
}
```swift
// You are given an array of numbers.
// You need to return the sum of squared numbers in the given array,
// round each element in the array to the upper int(Ceiling) first.
// Examples:
// sumSquares(lst: [1.0, 2.0, 3.0]) == 14
// sumSquares(lst: [1.0, 4.0, 9.0]) == 98
// sumSquares(lst: [1.0, 3.0, 5.0, 7.0]) == 84
// sumSquares(lst: [1.4, 4.2, 0.0]) == 29
// sumSquares(lst: [-2.4, 1.0, 1.0]) == 6
func sumSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        sum += Int(ceil(i * i))
    }
    return sum
}
<|file_separator|>
 // XCTAssertTrue failed

func checkIfLastCharIsALetter(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isLetter {
        return true
    }
    return false
}
```swift
// Create a function that returns true if the last character
// of a given string is an alphabetical character and is not
// a part of a word, and false otherwise.
// Note: "word" is a group of characters separated by space.
// Examples:
// checkIfLastCharIsALetter(txt: "apple pie") == false
// checkIfLastCharIsALetter(txt: "apple pi e") == true
// checkIfLastCharIsALetter(txt: "apple pi e ") == false
// checkIfLastCharIsALetter(txt: "") == false
func checkIfLastCharIsALetter(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isLetter {
        return true
    }
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func checkIfLastCharIsALetter(txt: String) -> Bool {
    let lastChar = txt.last
    let isLetter = CharacterSet.letters.contains(lastChar!)
    return isLetter
}
```swift
// Create a function that returns true if the last character
// of a given string is an alphabetical character and is not
// a part of a word, and false otherwise.
// Note: "word" is a group of characters separated by space.
// Examples:
// checkIfLastCharIsALetter(txt: "apple pie") == false
// checkIfLastCharIsALetter(txt: "apple pi e") == true
// checkIfLastCharIsALetter(txt: "apple pi e ") == false
// checkIfLastCharIsALetter(txt: "") == false
func checkIfLastCharIsALetter(txt: String) -> Bool {
    let lastChar = txt.last
    let isLetter = CharacterSet.letters.contains(lastChar!)
    return isLetter
}

// Create a function that returns true if the last character
// of a given string is an alphabetical character and is not
// a part of a word, and false otherwise.
// Note: "word" is a group of characters separated by space.
// Examples:
// checkIfLastCharIsALetter(txt: "apple pie") == false
// checkIfLastCharIsALetter(txt: "apple pi e") == true
// checkIfLastCharIsALetter(txt: "apple pi e ") == false
// checkIfLastCharIsALetter(txt: "") == false
func checkIfLastCharIsALetter(txt: String) -> Bool {
    let lastChar = txt.last
    let isLetter = CharacterSet.letters.contains(lastChar!)
    return isLetter
}

// Create a function that returns true if the last character
// of a given string is an alphabetical character and is not
// a part of a word, and false otherwise.
// Note: "word" is a group of characters separated by space.
// Examples:
// checkIfLastCharIsALetter(txt: "apple pie") == false
// checkIfLastCharIsALetter(txt: "apple pi e") == true
// checkIfLastCharIsALetter(txt: "apple pi e ") == false
// checkIfLastCharIsALetter(txt: "") == false
func checkIfLastCharIsALetter(txt: String) -> Bool {
    let lastChar = txt.last
    let isLetter = CharacterSet.letters.contains(lastChar!)
    return isLetter
}

// Create a function that returns true if the last character
// of a given string is an alphabetical character and is not
// a part of a word, and false otherwise.
// Note: "word" is a group of characters separated by space.
// Examples:
// checkIfLastCharIsALetter(txt: "apple pie") == false
// checkIfLastCharIsALetter(txt: "apple pi e") == true
// checkIfLastCharIsALetter(txt: "apple pi e ") == false
// checkIfLastCharIsALetter(txt: "") == false
func checkIfLastCharIsALetter(txt: String) -> Bool {
    let lastChar = txt.last
    let isLetter = CharacterSet.letters.contains(lastChar!)
    return isLetter
}

// Create a function that returns true if the last character
// of a given string is an alphabetical character and is not
// a part of a word, and false otherwise.
// Note: "word" is a group of characters separated by space.
// Examples:
// checkIfLastCharIsALetter(txt: "apple pie") == false
// checkIfLastCharIsALetter(txt: "apple pi e") == true
// checkIfLastCharIsALetter(txt: "apple pi e ") == false
// checkIfLastCharIsALetter(txt: "") == false
func checkIfLastCharIsALetter(txt: String) -> Bool {
    let lastChar = txt.last
    let isLetter = CharacterSet.letters.contains(lastChar!)
    return isLetter
}

// Create a function that returns true if the last character
// of a given string is an alphabetical character and is not
// a part of a word, and false otherwise.
// Note: "word" is a group of characters separated by space.
// Examples:
// checkIfLastCharIsALetter(txt: "apple pie") == false
// checkIfLastCharIsALetter(txt: "apple pi e") == true
// checkIfLastCharIsALetter(txt: "apple pi e ") == false
// checkIfLastCharIsALetter(txt: "") == false
func checkIfLastCharIsALetter(txt: String) -> Bool {
    let lastChar = txt.last
    let isLetter = CharacterSet.letters.contains(lastChar!)
    return isLetter
}

// Create a function that returns true if the last character
// of a given string is an alphabetical character and is not
// a part of a word, and false otherwise.
// Note: "word" is a group of characters separated by space.
// Examples:
// checkIfLastCharIsALetter(txt: "apple pie") == false
// checkIfLastCharIsALetter(txt: "apple pi e") == true
// checkIfLastCharIsALetter(txt: "
let isLetter = CharacterSet.letters.contains(lastChar!) // cannot convert value of type 'String.Element' (aka 'Character') to expected argument type 'Unicode.Scalar'

func checkIfLastCharIsALetter(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isLetter == false {
        return false
    }
    return true
}
```swift
// Create a function that returns true if the last character
// of a given string is an alphabetical character and is not
// a part of a word, and false otherwise.
// Note: "word" is a group of characters separated by space.
// Examples:
// checkIfLastCharIsALetter(txt: "apple pie") == false
// checkIfLastCharIsALetter(txt: "apple pi e") == true
// checkIfLastCharIsALetter(txt: "apple pi e ") == false
// checkIfLastCharIsALetter(txt: "") == false
func checkIfLastCharIsALetter(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isLetter == false {
        return false
    }
    return true
}
<|file_separator|>
 // XCTAssertTrue failed

func checkIfLastCharIsALetter(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isLetter {
        return true
    }
    return false
}
```swift
// Create a function that returns true if the last character
// of a given string is an alphabetical character and is not
// a part of a word, and false otherwise.
// Note: "word" is a group of characters separated by space.
// Examples:
// checkIfLastCharIsALetter(txt: "apple pie") == false
// checkIfLastCharIsALetter(txt: "apple pi e") == true
// checkIfLastCharIsALetter(txt: "apple pi e ") == false
// checkIfLastCharIsALetter(txt: "") == false
func checkIfLastCharIsALetter(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isLetter {
        return true
    }
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func checkIfLastCharIsALetter(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isLetter {
        return true
    }
    return false
}

func checkIfLastCharIsAVowel(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isVowel {
        return true
    }
    return false
}

func checkIfLastCharIsAConsonant(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isConsonant {
        return true
    }
    return false
}

func checkIfLastCharIsADigit(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isDigit {
        return true
    }
    return false
}

func checkIfLastCharIsASpecialCharacter(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isSpecialCharacter {
        return true
    }
    return false
}

func checkIfLastCharIsAWord(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isWord {
        return true
    }
    return false
}
```swift
// Create a function that returns true if the last character
// of a given string is an alphabetical character and is not
// a part of a word, and false otherwise.
// Note: "word" is a group of characters separated by space.
// Examples:
// checkIfLastCharIsALetter(txt: "apple pie") == false
// checkIfLastCharIsALetter(txt: "apple pi e") == true
// checkIfLastCharIsALetter(txt: "apple pi e ") == false
// checkIfLastCharIsALetter(txt: "") == false
func checkIfLastCharIsALetter(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isLetter {
        return true
    }
    return false
}

// Create a function that returns true if the last character
// of a given string is a vowel and is not a part of a word,
// and false otherwise.
// Examples:
// checkIfLastCharIsAVowel(txt: "apple pie") == true
// checkIfLastCharIsAVowel(txt: "apple pi e") == false
// checkIfLastCharIsAVowel(txt: "apple pi e ") == false
// checkIfLastCharIsAVowel(txt: "") == false
func checkIfLastCharIsAVowel(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isVowel {
        return true
    }
    return false
}

// Create a function that returns true if the last character
// of a given string is a consonant and is not a part of a word,
// and false otherwise.
// Examples:
// checkIfLastCharIsAConsonant(txt: "apple pie") == false
// checkIfLastCharIsAConsonant(txt: "apple pi e") == true
// checkIfLastCharIsAConsonant(txt: "apple pi e ") == false
// checkIfLastCharIsAConsonant(txt: "") == false
func checkIfLastCharIsAConsonant(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isConsonant {
        return true
    }
    return false
}

// Create a function that returns true if the last character
// of a given string is a digit and is not a part of a word,
// and false otherwise.
// Examples:
// checkIfLastCharIsADigit(txt: "apple pie") == false
// checkIfLastCharIsADigit(txt: "apple pi e") == false
// checkIfLastCharIsADigit(txt: "apple pi e ") == false
// checkIfLastCharIsADigit(txt: "") == false
func checkIfLastCharIsADigit(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isDigit {
        return true
    }
    return false
}

// Create a function that returns true if the last character
// of a given string is a special character and is not a part of a word,
// and false otherwise.
// Examples:
// checkIfLastCharIsASpecialCharacter(txt: "apple pie") == false
// checkIfLastCharIsASpecialCharacter(txt: "apple pi e") == false
// checkIfLastCharIsASpecialCharacter(txt: "apple pi e ") == false
// checkIfLastCharIsASpecialCharacter(txt: "") == false
func checkIfLastCharIsASpecialCharacter(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isSpecialCharacter {
        return true
    }
    return false
}

// Create a function that returns true if the last character
// of a given string is a word and is not a part of a word,
// and false otherwise.
// Examples:
// checkIfLastCharIsAWord(txt: "apple pie") == false
// checkIfLastCharIsAWord(txt: "apple pi e") == false
// checkIfLastCharIsAWord(txt: "apple pi e ") == false
// checkIfLastCharIsAWord(txt: "") == false
func checkIfLastCharIsAWord(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isWord {
        return true
    }
    return false
}

// Create a function that returns true if the last character
// of a given string is a space and is not a part of a word
if txt.last!.isVowel { // value of type 'String.Element' (aka 'Character') has no member 'isVowel'
if txt.last!.isConsonant { // value of type 'String.Element' (aka 'Character') has no member 'isConsonant'
if txt.last!.isDigit { // value of type 'String.Element' (aka 'Character') has no member 'isDigit'
if txt.last!.isSpecialCharacter { // value of type 'String.Element' (aka 'Character') has no member 'isSpecialCharacter'
if txt.last!.isWord { // value of type 'String.Element' (aka 'Character') has no member 'isWord'

func checkIfLastCharIsALetter(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isLetter == false {
        return false
    }
    return true
}
```swift
// Create a function that returns true if the last character
// of a given string is an alphabetical character and is not
// a part of a word, and false otherwise.
// Note: "word" is a group of characters separated by space.
// Examples:
// checkIfLastCharIsALetter(txt: "apple pie") == false
// checkIfLastCharIsALetter(txt: "apple pi e") == true
// checkIfLastCharIsALetter(txt: "apple pi e ") == false
// checkIfLastCharIsALetter(txt: "") == false
func checkIfLastCharIsALetter(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isLetter == false {
        return false
    }
    return true
}
<|file_separator|>
 // XCTAssertTrue failed

func checkIfLastCharIsALetter(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isLetter {
        return false
    }
    return true
}
```swift
// Create a function that returns true if the last character
// of a given string is an alphabetical character and is not
// a part of a word, and false otherwise.
// Note: "word" is a group of characters separated by space.
// Examples:
// checkIfLastCharIsALetter(txt: "apple pie") == false
// checkIfLastCharIsALetter(txt: "apple pi e") == true
// checkIfLastCharIsALetter(txt: "apple pi e ") == false
// checkIfLastCharIsALetter(txt: "") == false
func checkIfLastCharIsALetter(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isLetter {
        return false
    }
    return true
}
<|file_separator|>
 // XCTAssertTrue failed

func checkIfLastCharIsALetter(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isLetter {
        return true
    }
    return false
}
```swift
// Create a function that returns true if the last character
// of a given string is an alphabetical character and is not
// a part of a word, and false otherwise.
// Note: "word" is a group of characters separated by space.
// Examples:
// checkIfLastCharIsALetter(txt: "apple pie") == false
// checkIfLastCharIsALetter(txt: "apple pi e") == true
// checkIfLastCharIsALetter(txt: "apple pi e ") == false
// checkIfLastCharIsALetter(txt: "") == false
func checkIfLastCharIsALetter(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isLetter {
        return true
    }
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func checkIfLastCharIsALetter(txt: String) -> Bool {
  // Your code here
  if txt.last == " " {
    return false
  }
  if txt.last == nil {
    return false
  }
  if txt.last!.isLetter {
    return true
  }
  return false
}
```swift
// Create a function that returns true if the last character
// of a given string is an alphabetical character and is not
// a part of a word, and false otherwise.
// Note: "word" is a group of characters separated by space.
// Examples:
// checkIfLastCharIsALetter(txt: "apple pie") == false
// checkIfLastCharIsALetter(txt: "apple pi e") == true
// checkIfLastCharIsALetter(txt: "apple pi e ") == false
// checkIfLastCharIsALetter(txt: "") == false
func checkIfLastCharIsALetter(txt: String) -> Bool {
  // Your code here
  if txt.last == " " {
    return false
  }
  if txt.last == nil {
    return false
  }
  if txt.last!.isLetter {
    return true
  }
  return false
}
<|file_separator|>
 // XCTAssertTrue failed

func checkIfLastCharIsALetter(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isLetter {
        return false
    }
    return true
}
```swift
// Create a function that returns true if the last character
// of a given string is an alphabetical character and is not
// a part of a word, and false otherwise.
// Note: "word" is a group of characters separated by space.
// Examples:
// checkIfLastCharIsALetter(txt: "apple pie") == false
// checkIfLastCharIsALetter(txt: "apple pi e") == true
// checkIfLastCharIsALetter(txt: "apple pi e ") == false
// checkIfLastCharIsALetter(txt: "") == false
func checkIfLastCharIsALetter(txt: String) -> Bool {
    if txt.last == " " {
        return false
    }
    if txt.last == nil {
        return false
    }
    if txt.last!.isLetter {
        return false
    }
    return true
}
<|file_separator|>
 // XCTAssertTrue failed

func canArrange(arr: [Int]) -> Int {
  var arr = arr
  var result = -1
  for i in 1..<arr.count {
    if arr[i-1] <= arr[i] {
      result = i - 1
      break
    }
  }
  return result
}
```swift
// Create a function which returns the largest index of an element which
// is not greater than or equal to the element immediately preceding it. If
// no such element exists then return -1. The given array will not contain
// duplicate values.
// Examples:
// canArrange(arr: [1, 2, 4, 3, 5]) == 3
// canArrange(arr: [1, 2, 3]) == -1
func canArrange(arr: [Int]) -> Int {
  var arr = arr
  var result = -1
  for i in 1..<arr.count {
    if arr[i-1] <= arr[i] {
      result = i - 1
      break
    }
  }
  return result
}
<|file_separator|>
var arr = arr // variable 'arr' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func canArrange(arr: [Int]) -> Int {
  var arr = arr
  var i = 1
  var j = 0
  while i < arr.count {
    if arr[i] > arr[i - 1] {
      arr[i] = -1
    }
    i += 1
  }
  i = 0
  while i < arr.count {
    if arr[i] == -1 {
      j = i + 1
      while j < arr.count {
        if arr[j] != -1 && arr[j] < arr[i] {
          arr[i] = arr[j]
          arr[j] = -1
        }
        j += 1
      }
    }
    i += 1
  }
  i = 0
  while i < arr.count {
    if arr[i] == -1 {
      return -1
    }
    i += 1
  }
  return arr.max()!
}
```swift
// Create a function which returns the largest index of an element which
// is not greater than or equal to the element immediately preceding it. If
// no such element exists then return -1. The given array will not contain
// duplicate values.
// Examples:
// canArrange(arr: [1, 2, 4, 3, 5]) == 3
// canArrange(arr: [1, 2, 3]) == -1
func canArrange(arr: [Int]) -> Int {
  var arr = arr
  var i = 1
  var j = 0
  while i < arr.count {
    if arr[i] > arr[i - 1] {
      arr[i] = -1
    }
    i += 1
  }
  i = 0
  while i < arr.count {
    if arr[i] == -1 {
      j = i + 1
      while j < arr.count {
        if arr[j] != -1 && arr[j] < arr[i] {
          arr[i] = arr[j]
          arr[j] = -1
        }
        j += 1
      }
    }
    i += 1
  }
  i = 0
  while i < arr.count {
    if arr[i] == -1 {
      return -1
    }
    i += 1
  }
  return arr.max()!
}
<|file_separator|>
 // XCTAssertTrue failed

func canArrange(arr: [Int]) -> Int {
    var arr = arr
    var i = 0
    while i < arr.count {
        if arr[i] > arr[i - 1] {
            return i
        }
        i += 1
    }
    return -1
}
```swift
// Create a function which returns the largest index of an element which
// is not greater than or equal to the element immediately preceding it. If
// no such element exists then return -1. The given array will not contain
// duplicate values.
// Examples:
// canArrange(arr: [1, 2, 4, 3, 5]) == 3
// canArrange(arr: [1, 2, 3]) == -1
func canArrange(arr: [Int]) -> Int {
    var arr = arr
    var i = 0
    while i < arr.count {
        if arr[i] > arr[i - 1] {
            return i
        }
        i += 1
    }
    return -1
}
<|file_separator|>
var arr = arr // variable 'arr' was never mutated; consider changing to 'let' constant
 // Fatal error: Index out of range

func canArrange(arr: [Int]) -> Int {
  var arr = arr
  for i in 1..<arr.count {
    if arr[i] > arr[i-1] {
      return i
    }
  }
  return -1
}
```swift
// Create a function which returns the largest index of an element which
// is not greater than or equal to the element immediately preceding it. If
// no such element exists then return -1. The given array will not contain
// duplicate values.
// Examples:
// canArrange(arr: [1, 2, 4, 3, 5]) == 3
// canArrange(arr: [1, 2, 3]) == -1
func canArrange(arr: [Int]) -> Int {
  var arr = arr
  for i in 1..<arr.count {
    if arr[i] > arr[i-1] {
      return i
    }
  }
  return -1
}
<|file_separator|>
var arr = arr // variable 'arr' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func canArrange(arr: [Int]) -> Int {
    var arr = arr
    var index = 0
    var result = -1
    while index < arr.count {
        if arr[index] <= arr[index - 1] {
            result = index
            break
        }
        index += 1
    }
    return result
}
```swift
// Create a function which returns the largest index of an element which
// is not greater than or equal to the element immediately preceding it. If
// no such element exists then return -1. The given array will not contain
// duplicate values.
// Examples:
// canArrange(arr: [1, 2, 4, 3, 5]) == 3
// canArrange(arr: [1, 2, 3]) == -1
func canArrange(arr: [Int]) -> Int {
    var arr = arr
    var index = 0
    var result = -1
    while index < arr.count {
        if arr[index] <= arr[index - 1] {
            result = index
            break
        }
        index += 1
    }
    return result
}
<|file_separator|>
var arr = arr // variable 'arr' was never mutated; consider changing to 'let' constant
 // Fatal error: Index out of range

func canArrange(arr: [Int]) -> Int {
  var arr = arr
  for i in 0..<arr.count {
    if arr[i] < 0 {
      arr[i] = -arr[i]
    }
  }
  for i in 0..<arr.count {
    if arr[i] == 0 {
      return -1
    }
    if arr[i] > 0 && arr[arr[i] - 1] > arr[i] {
      return i
    }
  }
  return -1
}
```swift
// Create a function which returns the largest index of an element which
// is not greater than or equal to the element immediately preceding it. If
// no such element exists then return -1. The given array will not contain
// duplicate values.
// Examples:
// canArrange(arr: [1, 2, 4, 3, 5]) == 3
// canArrange(arr: [1, 2, 3]) == -1
func canArrange(arr: [Int]) -> Int {
  var arr = arr
  for i in 0..<arr.count {
    if arr[i] < 0 {
      arr[i] = -arr[i]
    }
  }
  for i in 0..<arr.count {
    if arr[i] == 0 {
      return -1
    }
    if arr[i] > 0 && arr[arr[i] - 1] > arr[i] {
      return i
    }
  }
  return -1
}
<|file_separator|>
 // XCTAssertTrue failed

func canArrange(arr: [Int]) -> Int {
    var arr = arr
    var index = 0
    while index < arr.count {
        if arr[index] > arr[index - 1] {
            return index
        }
        index += 1
    }
    return -1
}
```swift
// Create a function which returns the largest index of an element which
// is not greater than or equal to the element immediately preceding it. If
// no such element exists then return -1. The given array will not contain
// duplicate values.
// Examples:
// canArrange(arr: [1, 2, 4, 3, 5]) == 3
// canArrange(arr: [1, 2, 3]) == -1
func canArrange(arr: [Int]) -> Int {
    var arr = arr
    var index = 0
    while index < arr.count {
        if arr[index] > arr[index - 1] {
            return index
        }
        index += 1
    }
    return -1
}
<|file_separator|>
var arr = arr // variable 'arr' was never mutated; consider changing to 'let' constant
 // Fatal error: Index out of range

func canArrange(arr: [Int]) -> Int {
  var arr = arr
  for i in 1..<arr.count {
    if arr[i] > arr[i - 1] {
      return i
    }
  }
  return -1
}
```swift
// Create a function which returns the largest index of an element which
// is not greater than or equal to the element immediately preceding it. If
// no such element exists then return -1. The given array will not contain
// duplicate values.
// Examples:
// canArrange(arr: [1, 2, 4, 3, 5]) == 3
// canArrange(arr: [1, 2, 3]) == -1
func canArrange(arr: [Int]) -> Int {
  var arr = arr
  for i in 1..<arr.count {
    if arr[i] > arr[i - 1] {
      return i
    }
  }
  return -1
}
<|file_separator|>
var arr = arr // variable 'arr' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func canArrange(arr: [Int]) -> Int {
    var arr = arr
    var i = 0
    while i < arr.count {
        if arr[i] % 2 == 0 {
            if arr[i] - 1 < 0 {
                return -1
            }
            if arr[i - 1] > arr[i] {
                return i - 1
            }
        }
        i += 1
    }
    return -1
}
```swift
// Create a function which returns the largest index of an element which
// is not greater than or equal to the element immediately preceding it. If
// no such element exists then return -1. The given array will not contain
// duplicate values.
// Examples:
// canArrange(arr: [1, 2, 4, 3, 5]) == 3
// canArrange(arr: [1, 2, 3]) == -1
func canArrange(arr: [Int]) -> Int {
    var arr = arr
    var i = 0
    while i < arr.count {
        if arr[i] % 2 == 0 {
            if arr[i] - 1 < 0 {
                return -1
            }
            if arr[i - 1] > arr[i] {
                return i - 1
            }
        }
        i += 1
    }
    return -1
}
<|file_separator|>
var arr = arr // variable 'arr' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func canArrange(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    for i in 0..<arr.count {
        if arr[i] > arr[i-1] {
            return i
        }
    }
    return -1
}
```swift
// Create a function which returns the largest index of an element which
// is not greater than or equal to the element immediately preceding it. If
// no such element exists then return -1. The given array will not contain
// duplicate values.
// Examples:
// canArrange(arr: [1, 2, 4, 3, 5]) == 3
// canArrange(arr: [1, 2, 3]) == -1
func canArrange(arr: [Int]) -> Int {
    var arr = arr
    arr.sort()
    for i in 0..<arr.count {
        if arr[i] > arr[i-1] {
            return i
        }
    }
    return -1
}
<|file_separator|>
 // Fatal error: Index out of range

func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    var max: Int? = nil
    var min: Int? = nil
    for i in lst {
        if i > 0 {
            if min == nil || i < min {
                min = i
            }
        } else if i < 0 {
            if max == nil || i > max {
                max = i
            }
        }
    }
    return (max, min)
}
```swift
// Create a function that returns a tuple (a, b), where 'a' is
// the largest of negative integers, and 'b' is the smallest
// of positive integers in an array.
// If there is no negative or positive integers, return them as nil.
// Examples:
// largestSmallestIntegers(lst: [2, 4, 1, 3, 5, 7]) == (nil, 1)
// largestSmallestIntegers(lst: [] as [Int]) == (nil, nil)
// largestSmallestIntegers(lst: [0]) == (nil, nil)
func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    var max: Int? = nil
    var min: Int? = nil
    for i in lst {
        if i > 0 {
            if min == nil || i < min {
                min = i
            }
        } else if i < 0 {
            if max == nil || i > max {
                max = i
            }
        }
    }
    return (max, min)
}
<|file_separator|>
if min == nil || i < min { // value of optional type 'Int?' must be unwrapped to a value of type 'Int'
if max == nil || i > max { // value of optional type 'Int?' must be unwrapped to a value of type 'Int'

func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    var positive = [Int]()
    var negative = [Int]()
    for i in lst {
        if i > 0 {
            positive.append(i)
        } else if i < 0 {
            negative.append(i)
        }
    }
    if positive.count == 0 {
        return (nil, nil)
    }
    if negative.count == 0 {
        return (nil, nil)
    }
    return (negative.min()!, positive.max()!)
}
```swift
// Create a function that returns a tuple (a, b), where 'a' is
// the largest of negative integers, and 'b' is the smallest
// of positive integers in an array.
// If there is no negative or positive integers, return them as nil.
// Examples:
// largestSmallestIntegers(lst: [2, 4, 1, 3, 5, 7]) == (nil, 1)
// largestSmallestIntegers(lst: [] as [Int]) == (nil, nil)
// largestSmallestIntegers(lst: [0]) == (nil, nil)
func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    var positive = [Int]()
    var negative = [Int]()
    for i in lst {
        if i > 0 {
            positive.append(i)
        } else if i < 0 {
            negative.append(i)
        }
    }
    if positive.count == 0 {
        return (nil, nil)
    }
    if negative.count == 0 {
        return (nil, nil)
    }
    return (negative.min()!, positive.max()!)
}
<|file_separator|>
 // XCTAssertTrue failed

func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    // your code here
}
```swift
// Create a function that returns a tuple (a, b), where 'a' is
// the largest of negative integers, and 'b' is the smallest
// of positive integers in an array.
// If there is no negative or positive integers, return them as nil.
// Examples:
// largestSmallestIntegers(lst: [2, 4, 1, 3, 5, 7]) == (nil, 1)
// largestSmallestIntegers(lst: [] as [Int]) == (nil, nil)
// largestSmallestIntegers(lst: [0]) == (nil, nil)
func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    // your code here
}

// Create a function that returns a tuple (a, b), where 'a' is
// the largest of negative integers, and 'b' is the smallest
// of positive integers in an array.
// If there is no negative or positive integers, return them as nil.
// Examples:
// largestSmallestIntegers(lst: [2, 4, 1, 3, 5, 7]) == (nil, 1)
// largestSmallestIntegers(lst: [] as [Int]) == (nil, nil)
// largestSmallestIntegers(lst: [0]) == (nil, nil)
func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    // your code here
}

// Create a function that returns a tuple (a, b), where 'a' is
// the largest of negative integers, and 'b' is the smallest
// of positive integers in an array.
// If there is no negative or positive integers, return them as nil.
// Examples:
// largestSmallestIntegers(lst: [2, 4, 1, 3, 5, 7]) == (nil, 1)
// largestSmallestIntegers(lst: [] as [Int]) == (nil, nil)
// largestSmallestIntegers(lst: [0]) == (nil, nil)
func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    // your code here
}

// Create a function that returns a tuple (a, b), where 'a' is
// the largest of negative integers, and 'b' is the smallest
// of positive integers in an array.
// If there is no negative or positive integers, return them as nil.
// Examples:
// largestSmallestIntegers(lst: [2, 4, 1, 3, 5, 7]) == (nil, 1)
// largestSmallestIntegers(lst: [] as [Int]) == (nil, nil)
// largestSmallestIntegers(lst: [0]) == (nil, nil)
func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    // your code here
}

// Create a function that returns a tuple (a, b), where 'a' is
// the largest of negative integers, and 'b' is the smallest
// of positive integers in an array.
// If there is no negative or positive integers, return them as nil.
// Examples:
// largestSmallestIntegers(lst: [2, 4, 1, 3, 5, 7]) == (nil, 1)
// largestSmallestIntegers(lst: [] as [Int]) == (nil, nil)
// largestSmallestIntegers(lst: [0]) == (nil, nil)
func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    // your code here
}

// Create a function that returns a tuple (a, b), where 'a' is
// the largest of negative integers, and 'b' is the smallest
// of positive integers in an array.
// If there is no negative or positive integers, return them as nil.
// Examples:
// largestSmallestIntegers(lst: [2, 4, 1, 3, 5, 7]) == (nil, 1)
// largestSmallestIntegers(lst: [] as [Int]) == (nil, nil)
// largestSmallestIntegers(lst: [0]) == (nil, nil)
func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    // your code here
}

// Create a function that returns a tuple (a, b), where 'a' is
// the largest of negative integers, and 'b' is the smallest
// of positive integers in an array.
// If there is no negative or positive integers, return them as nil.
// Examples:
// largestSmallestIntegers(lst: [2, 4, 1, 3, 5, 7]) == (nil, 1)
// largestSmallestIntegers(lst: [] as [Int]) == (nil, nil)
// largestSmallestIntegers(lst: [0]) == (nil, nil)
func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    // your code here
}

// Create a function that returns a tuple (a, b), where 'a' is
// the largest of negative integers, and 'b' is the smallest
// of positive integers in an array.
} // missing return in global function expected to return '(Int?, Int?)'

func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    var max = 0
    var min = 0
    for i in 0..<lst.count {
        if lst[i] > max {
            max = lst[i]
        }
        if lst[i] < min {
            min = lst[i]
        }
    }
    if max == 0 && min == 0 {
        return (nil, nil)
    }
    return (max, min)
}
```swift
// Create a function that returns a tuple (a, b), where 'a' is
// the largest of negative integers, and 'b' is the smallest
// of positive integers in an array.
// If there is no negative or positive integers, return them as nil.
// Examples:
// largestSmallestIntegers(lst: [2, 4, 1, 3, 5, 7]) == (nil, 1)
// largestSmallestIntegers(lst: [] as [Int]) == (nil, nil)
// largestSmallestIntegers(lst: [0]) == (nil, nil)
func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    var max = 0
    var min = 0
    for i in 0..<lst.count {
        if lst[i] > max {
            max = lst[i]
        }
        if lst[i] < min {
            min = lst[i]
        }
    }
    if max == 0 && min == 0 {
        return (nil, nil)
    }
    return (max, min)
}
<|file_separator|>
 // XCTAssertTrue failed

func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    var largest: Int? = nil
    var smallest: Int? = nil
    for i in lst {
        if i < 0 {
            if largest == nil || i > largest! {
                largest = i
            }
        } else {
            if smallest == nil || i < smallest! {
                smallest = i
            }
        }
    }
    return (largest, smallest)
}
```swift
// Create a function that returns a tuple (a, b), where 'a' is
// the largest of negative integers, and 'b' is the smallest
// of positive integers in an array.
// If there is no negative or positive integers, return them as nil.
// Examples:
// largestSmallestIntegers(lst: [2, 4, 1, 3, 5, 7]) == (nil, 1)
// largestSmallestIntegers(lst: [] as [Int]) == (nil, nil)
// largestSmallestIntegers(lst: [0]) == (nil, nil)
func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    var largest: Int? = nil
    var smallest: Int? = nil
    for i in lst {
        if i < 0 {
            if largest == nil || i > largest! {
                largest = i
            }
        } else {
            if smallest == nil || i < smallest! {
                smallest = i
            }
        }
    }
    return (largest, smallest)
}
<|file_separator|>
 // XCTAssertTrue failed

func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    if lst.isEmpty {
        return (nil, nil)
    }
    
    var largest = lst[0]
    var smallest = lst[0]
    
    for i in 1..<lst.count {
        if lst[i] > largest {
            largest = lst[i]
        }
        
        if lst[i] < smallest {
            smallest = lst[i]
        }
    }
    
    return (largest, smallest)
}
```swift
// Create a function that returns a tuple (a, b), where 'a' is
// the largest of negative integers, and 'b' is the smallest
// of positive integers in an array.
// If there is no negative or positive integers, return them as nil.
// Examples:
// largestSmallestIntegers(lst: [2, 4, 1, 3, 5, 7]) == (nil, 1)
// largestSmallestIntegers(lst: [] as [Int]) == (nil, nil)
// largestSmallestIntegers(lst: [0]) == (nil, nil)
func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    if lst.isEmpty {
        return (nil, nil)
    }
    
    var largest = lst[0]
    var smallest = lst[0]
    
    for i in 1..<lst.count {
        if lst[i] > largest {
            largest = lst[i]
        }
        
        if lst[i] < smallest {
            smallest = lst[i]
        }
    }
    
    return (largest, smallest)
}
<|file_separator|>
 // XCTAssertTrue failed

func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    // your code here
}
```swift
// Create a function that returns a tuple (a, b), where 'a' is
// the largest of negative integers, and 'b' is the smallest
// of positive integers in an array.
// If there is no negative or positive integers, return them as nil.
// Examples:
// largestSmallestIntegers(lst: [2, 4, 1, 3, 5, 7]) == (nil, 1)
// largestSmallestIntegers(lst: [] as [Int]) == (nil, nil)
// largestSmallestIntegers(lst: [0]) == (nil, nil)
func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    // your code here
}
<|file_separator|>
} // missing return in global function expected to return '(Int?, Int?)'

func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    var positiveIntegers = [Int]()
    var negativeIntegers = [Int]()
    for i in lst {
        if i > 0 {
            positiveIntegers.append(i)
        } else {
            negativeIntegers.append(i)
        }
    }
    if positiveIntegers.count == 0 {
        return (nil, nil)
    }
    if negativeIntegers.count == 0 {
        return (nil, nil)
    }
    return (negativeIntegers.min()!, positiveIntegers.max()!)
}
```swift
// Create a function that returns a tuple (a, b), where 'a' is
// the largest of negative integers, and 'b' is the smallest
// of positive integers in an array.
// If there is no negative or positive integers, return them as nil.
// Examples:
// largestSmallestIntegers(lst: [2, 4, 1, 3, 5, 7]) == (nil, 1)
// largestSmallestIntegers(lst: [] as [Int]) == (nil, nil)
// largestSmallestIntegers(lst: [0]) == (nil, nil)
func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    var positiveIntegers = [Int]()
    var negativeIntegers = [Int]()
    for i in lst {
        if i > 0 {
            positiveIntegers.append(i)
        } else {
            negativeIntegers.append(i)
        }
    }
    if positiveIntegers.count == 0 {
        return (nil, nil)
    }
    if negativeIntegers.count == 0 {
        return (nil, nil)
    }
    return (negativeIntegers.min()!, positiveIntegers.max()!)
}
<|file_separator|>
 // XCTAssertTrue failed

func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    if lst.isEmpty {
        return (nil, nil)
    }
    
    var largest = lst[0]
    var smallest = lst[0]
    
    for i in lst {
        if i > largest {
            largest = i
        }
        if i < smallest {
            smallest = i
        }
    }
    
    return (largest, smallest)
}
```swift
// Create a function that returns a tuple (a, b), where 'a' is
// the largest of negative integers, and 'b' is the smallest
// of positive integers in an array.
// If there is no negative or positive integers, return them as nil.
// Examples:
// largestSmallestIntegers(lst: [2, 4, 1, 3, 5, 7]) == (nil, 1)
// largestSmallestIntegers(lst: [] as [Int]) == (nil, nil)
// largestSmallestIntegers(lst: [0]) == (nil, nil)
func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    if lst.isEmpty {
        return (nil, nil)
    }
    
    var largest = lst[0]
    var smallest = lst[0]
    
    for i in lst {
        if i > largest {
            largest = i
        }
        if i < smallest {
            smallest = i
        }
    }
    
    return (largest, smallest)
}
<|file_separator|>
 // XCTAssertTrue failed

func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    var positive = 0
    var negative = 0
    for i in lst {
        if i < 0 {
            negative = i
        } else {
            positive = i
        }
    }
    if negative == 0 && positive == 0 {
        return (nil, nil)
    } else if negative == 0 {
        return (nil, positive)
    } else if positive == 0 {
        return (negative, nil)
    } else {
        return (negative, positive)
    }
}
```swift
// Create a function that returns a tuple (a, b), where 'a' is
// the largest of negative integers, and 'b' is the smallest
// of positive integers in an array.
// If there is no negative or positive integers, return them as nil.
// Examples:
// largestSmallestIntegers(lst: [2, 4, 1, 3, 5, 7]) == (nil, 1)
// largestSmallestIntegers(lst: [] as [Int]) == (nil, nil)
// largestSmallestIntegers(lst: [0]) == (nil, nil)
func largestSmallestIntegers(lst: [Int]) -> (Int?, Int?) {
    var positive = 0
    var negative = 0
    for i in lst {
        if i < 0 {
            negative = i
        } else {
            positive = i
        }
    }
    if negative == 0 && positive == 0 {
        return (nil, nil)
    } else if negative == 0 {
        return (nil, positive)
    } else if positive == 0 {
        return (negative, nil)
    } else {
        return (negative, positive)
    }
}
<|file_separator|>
 // XCTAssertTrue failed

enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

func compareOne(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

func compareTwo(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

func compareThree(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

func compareFour(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}
```swift
enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareOne(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareOne(a: .intValue(1), b: .stringValue("2,3")) == .stringValue("2,3")
// compareOne(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareOne(a: .stringValue("1"), b: .intValue(1)) == nil
func compareOne(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareTwo(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareTwo(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareTwo(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("5,1")
// compareTwo(a: .stringValue("1"), b: .intValue(1)) == nil
func compareTwo(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareThree(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareThree(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareThree(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareThree(a: .stringValue("1"), b: .intValue(1)) == nil
func compareThree(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareFour(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareFour(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareFour(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareFour(a: .stringValue("1"), b: .intValue(1)) == nil
func compareFour(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareFive(a: .intValue(1), b: .doubleValue(2.5)) == .
return a > b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'

enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

func compareOne(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

func compareTwo(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

func compareThree(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

func compareFour(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}
```swift
enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareOne(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareOne(a: .intValue(1), b: .stringValue("2,3")) == .stringValue("2,3")
// compareOne(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareOne(a: .stringValue("1"), b: .intValue(1)) == nil
func compareOne(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareTwo(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareTwo(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareTwo(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("5,1")
// compareTwo(a: .stringValue("1"), b: .intValue(1)) == nil
func compareTwo(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareThree(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareThree(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareThree(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareThree(a: .stringValue("1"), b: .intValue(1)) == nil
func compareThree(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareFour(a: .intValue(1), b: .doubleValue(2.5)) == .intValue(1)
// compareFour(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareFour(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareFour(a: .stringValue("1"), b: .intValue(1)) == nil
func compareFour(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger
return a > b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'

enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

func compareOne(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

func compareTwo(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

func compareThree(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

func compareFour(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}
```swift
enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareOne(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareOne(a: .intValue(1), b: .stringValue("2,3")) == .stringValue("2,3")
// compareOne(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareOne(a: .stringValue("1"), b: .intValue(1)) == nil
func compareOne(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareTwo(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareTwo(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareTwo(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("5,1")
// compareTwo(a: .stringValue("1"), b: .intValue(1)) == nil
func compareTwo(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareThree(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareThree(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareThree(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareThree(a: .stringValue("1"), b: .intValue(1)) == nil
func compareThree(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareFour(a: .intValue(1), b: .doubleValue(2.5)) == .intValue(1)
// compareFour(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareFour(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareFour(a: .stringValue("1"), b: .intValue(1)) == nil
func compareFour(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareFive(a: .intValue(1), b: .doubleValue(2.5)) == .intValue(
return a > b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'

enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

func compareOne(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

func compareTwo(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

func compareThree(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

func compareFour(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}
```swift
enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareOne(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareOne(a: .intValue(1), b: .stringValue("2,3")) == .stringValue("2,3")
// compareOne(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareOne(a: .stringValue("1"), b: .intValue(1)) == nil
func compareOne(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareTwo(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareTwo(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareTwo(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("5,1")
// compareTwo(a: .stringValue("1"), b: .intValue(1)) == nil
func compareTwo(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareThree(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareThree(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareThree(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareThree(a: .stringValue("1"), b: .intValue(1)) == nil
func compareThree(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareFour(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareFour(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareFour(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("5,1")
// compareFour(a: .stringValue("1"), b: .intValue(1)) == nil
func compareFour(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareFive(a: .intValue(1), b: .doubleValue(2.5))
return a > b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'

enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

func compareOne(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

func compareTwo(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

func compareThree(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

func compareFour(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}
```swift
enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareOne(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareOne(a: .intValue(1), b: .stringValue("2,3")) == .stringValue("2,3")
// compareOne(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareOne(a: .stringValue("1"), b: .intValue(1)) == nil
func compareOne(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareTwo(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareTwo(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareTwo(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("5,1")
// compareTwo(a: .stringValue("1"), b: .intValue(1)) == nil
func compareTwo(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareThree(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareThree(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareThree(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareThree(a: .stringValue("1"), b: .intValue(1)) == nil
func compareThree(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareFour(a: .intValue(1), b: .doubleValue(2.5)) == .intValue(1)
// compareFour(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareFour(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareFour(a: .stringValue("1"), b: .intValue(1)) == nil
func compareFour(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareFive(a: .intValue(1), b: .doubleValue(2.5)) == .intValue(
return a > b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'

enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

func compareOne(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

func compareTwo(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

func compareThree(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

func compareFour(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}
```swift
enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareOne(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareOne(a: .intValue(1), b: .stringValue("2,3")) == .stringValue("2,3")
// compareOne(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareOne(a: .stringValue("1"), b: .intValue(1)) == nil
func compareOne(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareTwo(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareTwo(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareTwo(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("5,1")
// compareTwo(a: .stringValue("1"), b: .intValue(1)) == nil
func compareTwo(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareThree(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareThree(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareThree(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareThree(a: .stringValue("1"), b: .intValue(1)) == nil
func compareThree(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareFour(a: .intValue(1), b: .doubleValue(2.5)) == .intValue(1)
// compareFour(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareFour(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareFour(a: .stringValue("1"), b: .intValue(1)) == nil
func compareFour(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareFive(a: .intValue(1), b: .doubleValue(2.5)) == .intValue(
return a > b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'

enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

func compareOne(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? .intValue(a) : .intValue(b)
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? .doubleValue(a) : .doubleValue(b)
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? .stringValue(a) : .stringValue(b)
    default:
        return nil
    }
}

func compareTwo(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? .intValue(a) : .intValue(b)
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? .doubleValue(a) : .doubleValue(b)
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? .stringValue(a) : .stringValue(b)
    default:
        return nil
    }
}

func compareThree(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? .intValue(a) : .intValue(b)
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? .doubleValue(a) : .doubleValue(b)
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? .stringValue(a) : .stringValue(b)
    default:
        return nil
    }
}
```swift
enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareOne(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareOne(a: .intValue(1), b: .stringValue("2,3")) == .stringValue("2,3")
// compareOne(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareOne(a: .stringValue("1"), b: .intValue(1)) == nil
func compareOne(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? .intValue(a) : .intValue(b)
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? .doubleValue(a) : .doubleValue(b)
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? .stringValue(a) : .stringValue(b)
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareTwo(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareTwo(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareTwo(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("5,1")
// compareTwo(a: .stringValue("1"), b: .intValue(1)) == nil
func compareTwo(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? .intValue(a) : .intValue(b)
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? .doubleValue(a) : .doubleValue(b)
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? .stringValue(a) : .stringValue(b)
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareThree(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareThree(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareThree(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareThree(a: .stringValue("1"), b: .intValue(1)) == nil
func compareThree(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? .intValue(a) : .intValue(b)
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? .doubleValue(a) : .doubleValue(b)
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? .stringValue(a) : .stringValue(b)
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareFour(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareFour(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareFour(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("5,1")
// compareFour(a: .stringValue("1"), b: .intValue(1)) == nil
func compareFour(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? .intValue(a) : .intValue(b)
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? .doubleValue(a) : .doubleValue(b)
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? .stringValue(a) : .stringValue(b)
 // XCTAssertTrue failed

enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

func compareOne(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

func compareTwo(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

func compareThree(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

func compareFour(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}
```swift
enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareOne(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareOne(a: .intValue(1), b: .stringValue("2,3")) == .stringValue("2,3")
// compareOne(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareOne(a: .stringValue("1"), b: .intValue(1)) == nil
func compareOne(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareTwo(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareTwo(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareTwo(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("5,1")
// compareTwo(a: .stringValue("1"), b: .intValue(1)) == nil
func compareTwo(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareThree(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareThree(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareThree(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareThree(a: .stringValue("1"), b: .intValue(1)) == nil
func compareThree(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a > b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a > b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a > b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareFour(a: .intValue(1), b: .doubleValue(2.5)) == .intValue(1)
// compareFour(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareFour(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareFour(a: .stringValue("1"), b: .intValue(1)) == nil
func compareFour(a: Value, b: Value) -> Value? {
    switch (a, b) {
    case (.intValue(let a), .intValue(let b)):
        return a < b ? a : b
    case (.doubleValue(let a), .doubleValue(let b)):
        return a < b ? a : b
    case (.stringValue(let a), .stringValue(let b)):
        return a < b ? a : b
    default:
        return nil
    }
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareFive(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(
return a > b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a > b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Int' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'Double' to return type 'Value?'
return a < b ? a : b // cannot convert return expression of type 'String' to return type 'Value?'

enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

func compareOne(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    if a == .intValue(Int(a.stringValue)) {
        return a
    }
    if a == .doubleValue(Double(a.stringValue)) {
        return a
    }
    if a == .stringValue(a.stringValue) {
        return a
    }
    if b == .intValue(Int(b.stringValue)) {
        return b
    }
    if b == .doubleValue(Double(b.stringValue)) {
        return b
    }
    if b == .stringValue(b.stringValue) {
        return b
    }
    return nil
}

func compareTwo(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    if a == .intValue(Int(a.stringValue)) {
        return a
    }
    if a == .doubleValue(Double(a.stringValue)) {
        return a
    }
    if a == .stringValue(a.stringValue) {
        return a
    }
    if b == .intValue(Int(b.stringValue)) {
        return b
    }
    if b == .doubleValue(Double(b.stringValue)) {
        return b
    }
    if b == .stringValue(b.stringValue) {
        return b
    }
    return nil
}

func compareThree(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    if a == .intValue(Int(a.stringValue)) {
        return a
    }
    if a == .doubleValue(Double(a.stringValue)) {
        return a
    }
    if a == .stringValue(a.stringValue) {
        return a
    }
    if b == .intValue(Int(b.stringValue)) {
        return b
    }
    if b == .doubleValue(Double(b.stringValue)) {
        return b
    }
    if b == .stringValue(b.stringValue) {
        return b
    }
    return nil
}
```swift
enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareOne(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareOne(a: .intValue(1), b: .stringValue("2,3")) == .stringValue("2,3")
// compareOne(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareOne(a: .stringValue("1"), b: .intValue(1)) == nil
func compareOne(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    if a == .intValue(Int(a.stringValue)) {
        return a
    }
    if a == .doubleValue(Double(a.stringValue)) {
        return a
    }
    if a == .stringValue(a.stringValue) {
        return a
    }
    if b == .intValue(Int(b.stringValue)) {
        return b
    }
    if b == .doubleValue(Double(b.stringValue)) {
        return b
    }
    if b == .stringValue(b.stringValue) {
        return b
    }
    return nil
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareTwo(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareTwo(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareTwo(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("5,1")
// compareTwo(a: .stringValue("1"), b: .intValue(1)) == nil
func compareTwo(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    if a == .intValue(Int(a.stringValue)) {
        return a
    }
    if a == .doubleValue(Double(a.stringValue)) {
        return a
    }
    if a == .stringValue(a.stringValue) {
        return a
    }
    if b == .intValue(Int(b.stringValue)) {
        return b
    }
    if b == .doubleValue(Double(b.stringValue)) {
        return b
    }
    if b == .stringValue(b.stringValue) {
        return b
    }
    return nil
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareThree(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareThree(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareThree(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareThree(a: .stringValue("1"), b: .intValue(1)) == nil
func compareThree(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    if a == .intValue(Int(a.stringValue)) {
        return a
    }
    if a == .doubleValue(Double(a.stringValue)) {
        return a
    }
    if a == .stringValue(a.stringValue) {
        return a
    }
    if b == .intValue(Int(b.stringValue)) {
        return b
    }
    if b == .doubleValue(Double(b.stringValue)) {
        return b
    }
    if b == .stringValue(b.stringValue) {
        return b
    }
    return nil
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareFour(a: .intValue(1), b: .doubleValue(2.5)) == .intValue(1)
// compareFour(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareFour(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareFour(a: .stringValue("1"), b: .intValue(1)) == nil
func compareFour(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    if a == .intValue(Int(a.stringValue)) {
        
if a == .intValue(Int(a.stringValue)) { // no exact matches in call to initializer
if a == .intValue(Int(a.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if a == .doubleValue(Double(a.stringValue)) { // no exact matches in call to initializer
if a == .doubleValue(Double(a.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if a == .stringValue(a.stringValue) { // enum case 'stringValue' cannot be used as an instance member
if a == .stringValue(a.stringValue) { // cannot convert value of type '(String) -> Value' to expected argument type 'String'
if b == .intValue(Int(b.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if b == .intValue(Int(b.stringValue)) { // no exact matches in call to initializer
if b == .doubleValue(Double(b.stringValue)) { // no exact matches in call to initializer
if b == .doubleValue(Double(b.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if b == .stringValue(b.stringValue) { // enum case 'stringValue' cannot be used as an instance member
if b == .stringValue(b.stringValue) { // cannot convert value of type '(String) -> Value' to expected argument type 'String'
if a == .intValue(Int(a.stringValue)) { // no exact matches in call to initializer
if a == .intValue(Int(a.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if a == .doubleValue(Double(a.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if a == .doubleValue(Double(a.stringValue)) { // no exact matches in call to initializer
if a == .stringValue(a.stringValue) { // enum case 'stringValue' cannot be used as an instance member
if a == .stringValue(a.stringValue) { // cannot convert value of type '(String) -> Value' to expected argument type 'String'
if b == .intValue(Int(b.stringValue)) { // no exact matches in call to initializer
if b == .intValue(Int(b.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if b == .doubleValue(Double(b.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if b == .doubleValue(Double(b.stringValue)) { // no exact matches in call to initializer
if b == .stringValue(b.stringValue) { // enum case 'stringValue' cannot be used as an instance member
if b == .stringValue(b.stringValue) { // cannot convert value of type '(String) -> Value' to expected argument type 'String'
if a == .intValue(Int(a.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if a == .intValue(Int(a.stringValue)) { // no exact matches in call to initializer
if a == .doubleValue(Double(a.stringValue)) { // no exact matches in call to initializer
if a == .doubleValue(Double(a.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if a == .stringValue(a.stringValue) { // cannot convert value of type '(String) -> Value' to expected argument type 'String'
if a == .stringValue(a.stringValue) { // enum case 'stringValue' cannot be used as an instance member
if b == .intValue(Int(b.stringValue)) { // no exact matches in call to initializer
if b == .intValue(Int(b.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if b == .doubleValue(Double(b.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if b == .doubleValue(Double(b.stringValue)) { // no exact matches in call to initializer
if b == .stringValue(b.stringValue) { // cannot convert value of type '(String) -> Value' to expected argument type 'String'
if b == .stringValue(b.stringValue) { // enum case 'stringValue' cannot be used as an instance member

enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

func compareOne(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    
    if a == .intValue(Int(a.stringValue)) {
        return a
    }
    
    if a == .doubleValue(Double(a.stringValue)) {
        return a
    }
    
    if a == .stringValue(a.stringValue) {
        return a
    }
    
    if b == .intValue(Int(b.stringValue)) {
        return b
    }
    
    if b == .doubleValue(Double(b.stringValue)) {
        return b
    }
    
    if b == .stringValue(b.stringValue) {
        return b
    }
    
    return nil
}

func compareTwo(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    
    if a == .intValue(Int(a.stringValue)) {
        return a
    }
    
    if a == .doubleValue(Double(a.stringValue)) {
        return a
    }
    
    if a == .stringValue(a.stringValue) {
        return a
    }
    
    if b == .intValue(Int(b.stringValue)) {
        return b
    }
    
    if b == .doubleValue(Double(b.stringValue)) {
        return b
    }
    
    if b == .stringValue(b.stringValue) {
        return b
    }
    
    return nil
}

func compareThree(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    
    if a == .intValue(Int(a.stringValue)) {
        return a
    }
    
    if a == .doubleValue(Double(a.stringValue)) {
        return a
    }
    
    if a == .stringValue(a.stringValue) {
        return a
    }
    
    if b == .intValue(Int(b.stringValue)) {
        return b
    }
    
    if b == .doubleValue(Double(b.stringValue)) {
        return b
    }
    
    if b == .stringValue(b.stringValue) {
        return b
    }
    
    return nil
}
```swift
enum Value: Equatable, Hashable {
    case intValue(Int)
    case doubleValue(Double)
    case stringValue(String)
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareOne(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareOne(a: .intValue(1), b: .stringValue("2,3")) == .stringValue("2,3")
// compareOne(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("6")
// compareOne(a: .stringValue("1"), b: .intValue(1)) == nil
func compareOne(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    
    if a == .intValue(Int(a.stringValue)) {
        return a
    }
    
    if a == .doubleValue(Double(a.stringValue)) {
        return a
    }
    
    if a == .stringValue(a.stringValue) {
        return a
    }
    
    if b == .intValue(Int(b.stringValue)) {
        return b
    }
    
    if b == .doubleValue(Double(b.stringValue)) {
        return b
    }
    
    if b == .stringValue(b.stringValue) {
        return b
    }
    
    return nil
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareTwo(a: .intValue(1), b: .doubleValue(2.5)) == .intValue(1)
// compareTwo(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareTwo(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("5,1")
// compareTwo(a: .stringValue("1"), b: .intValue(1)) == nil
func compareTwo(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    
    if a == .intValue(Int(a.stringValue)) {
        return a
    }
    
    if a == .doubleValue(Double(a.stringValue)) {
        return a
    }
    
    if a == .stringValue(a.stringValue) {
        return a
    }
    
    if b == .intValue(Int(b.stringValue)) {
        return b
    }
    
    if b == .doubleValue(Double(b.stringValue)) {
        return b
    }
    
    if b == .stringValue(b.stringValue) {
        return b
    }
    
    return nil
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the larger variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareThree(a: .intValue(1), b: .doubleValue(2.5)) == .doubleValue(2.5)
// compareThree(a: .intValue(1), b: .stringValue("2,3")) == .doubleValue(2.5)
// compareThree(a: .stringValue("5,1"), b: .stringValue("6")) == .doubleValue(6)
// compareThree(a: .stringValue("1"), b: .intValue(1)) == nil
func compareThree(a: Value, b: Value) -> Value? {
    if a == b {
        return nil
    }
    
    if a == .intValue(Int(a.stringValue)) {
        return a
    }
    
    if a == .doubleValue(Double(a.stringValue)) {
        return a
    }
    
    if a == .stringValue(a.stringValue) {
        return a
    }
    
    if b == .intValue(Int(b.stringValue)) {
        return b
    }
    
    if b == .doubleValue(Double(b.stringValue)) {
        return b
    }
    
    if b == .stringValue(b.stringValue) {
        return b
    }
    
    return nil
}

// Create a function that takes integers, floats, or strings representing
// real numbers, and returns the smaller variable in its given variable type.
// Return nil if the values are equal.
// Note: If a real number is represented as a string, the floating point might be . or ,
// compareFour(a: .intValue(1), b: .doubleValue(2.5)) == .intValue(1)
// compareFour(a: .intValue(1), b: .stringValue("2,3")) == .intValue(1)
// compareFour(a: .stringValue("5,1"), b: .stringValue("6")) == .stringValue("5,1")
// compareFour(a: .stringValue("1"), b: .intValue(1)) == nil
func compareFour
if a == .intValue(Int(a.stringValue)) { // no exact matches in call to initializer
if a == .intValue(Int(a.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if a == .doubleValue(Double(a.stringValue)) { // no exact matches in call to initializer
if a == .doubleValue(Double(a.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if a == .stringValue(a.stringValue) { // cannot convert value of type '(String) -> Value' to expected argument type 'String'
if a == .stringValue(a.stringValue) { // enum case 'stringValue' cannot be used as an instance member
if b == .intValue(Int(b.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if b == .intValue(Int(b.stringValue)) { // no exact matches in call to initializer
if b == .doubleValue(Double(b.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if b == .doubleValue(Double(b.stringValue)) { // no exact matches in call to initializer
if b == .stringValue(b.stringValue) { // cannot convert value of type '(String) -> Value' to expected argument type 'String'
if b == .stringValue(b.stringValue) { // enum case 'stringValue' cannot be used as an instance member
if a == .intValue(Int(a.stringValue)) { // no exact matches in call to initializer
if a == .intValue(Int(a.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if a == .doubleValue(Double(a.stringValue)) { // no exact matches in call to initializer
if a == .doubleValue(Double(a.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if a == .stringValue(a.stringValue) { // enum case 'stringValue' cannot be used as an instance member
if a == .stringValue(a.stringValue) { // cannot convert value of type '(String) -> Value' to expected argument type 'String'
if b == .intValue(Int(b.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if b == .intValue(Int(b.stringValue)) { // no exact matches in call to initializer
if b == .doubleValue(Double(b.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if b == .doubleValue(Double(b.stringValue)) { // no exact matches in call to initializer
if b == .stringValue(b.stringValue) { // enum case 'stringValue' cannot be used as an instance member
if b == .stringValue(b.stringValue) { // cannot convert value of type '(String) -> Value' to expected argument type 'String'
if a == .intValue(Int(a.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if a == .intValue(Int(a.stringValue)) { // no exact matches in call to initializer
if a == .doubleValue(Double(a.stringValue)) { // no exact matches in call to initializer
if a == .doubleValue(Double(a.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if a == .stringValue(a.stringValue) { // enum case 'stringValue' cannot be used as an instance member
if a == .stringValue(a.stringValue) { // cannot convert value of type '(String) -> Value' to expected argument type 'String'
if b == .intValue(Int(b.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if b == .intValue(Int(b.stringValue)) { // no exact matches in call to initializer
if b == .doubleValue(Double(b.stringValue)) { // no exact matches in call to initializer
if b == .doubleValue(Double(b.stringValue)) { // enum case 'stringValue' cannot be used as an instance member
if b == .stringValue(b.stringValue) { // enum case 'stringValue' cannot be used as an instance member
if b == .stringValue(b.stringValue) { // cannot convert value of type '(String) -> Value' to expected argument type 'String'

func isEqualToSumEven(n: Int) -> Bool {
    var result = false
    var counter = 0
    for i in 2...n {
        if (n - i) % 2 == 0 {
            counter += 1
            if counter == 4 {
                result = true
                break
            }
        }
    }
    return result
}
```swift
// Evaluate whether the given number n can be written as the sum of exactly 4 positive even numbers
// Example
// isEqualToSumEven(n: 4) == false
// isEqualToSumEven(n: 6) == false
// isEqualToSumEven(n: 8) == true
func isEqualToSumEven(n: Int) -> Bool {
    var result = false
    var counter = 0
    for i in 2...n {
        if (n - i) % 2 == 0 {
            counter += 1
            if counter == 4 {
                result = true
                break
            }
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func isEqualToSumEven(n: Int) -> Bool {
    var result = false
    for i in 2...n {
        for j in 2...n {
            for k in 2...n {
                for l in 2...n {
                    if i + j + k + l == n {
                        result = true
                    }
                }
            }
        }
    }
    return result
}
```swift
// Evaluate whether the given number n can be written as the sum of exactly 4 positive even numbers
// Example
// isEqualToSumEven(n: 4) == false
// isEqualToSumEven(n: 6) == false
// isEqualToSumEven(n: 8) == true
func isEqualToSumEven(n: Int) -> Bool {
    var result = false
    for i in 2...n {
        for j in 2...n {
            for k in 2...n {
                for l in 2...n {
                    if i + j + k + l == n {
                        result = true
                    }
                }
            }
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func isEqualToSumEven(n: Int) -> Bool {
    var result = false
    var count = 0
    for i in 2...n {
        if i % 2 == 0 {
            count += 1
            if count == 4 {
                result = true
                break
            }
        }
    }
    return result
}
```swift
// Evaluate whether the given number n can be written as the sum of exactly 4 positive even numbers
// Example
// isEqualToSumEven(n: 4) == false
// isEqualToSumEven(n: 6) == false
// isEqualToSumEven(n: 8) == true
func isEqualToSumEven(n: Int) -> Bool {
    var result = false
    var count = 0
    for i in 2...n {
        if i % 2 == 0 {
            count += 1
            if count == 4 {
                result = true
                break
            }
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func isEqualToSumEven(n: Int) -> Bool {
    var sum = 0
    var i = 2
    while sum < n {
        if n - sum == 2 {
            return true
        }
        sum += i
        i += 2
    }
    return false
}
```swift
// Evaluate whether the given number n can be written as the sum of exactly 4 positive even numbers
// Example
// isEqualToSumEven(n: 4) == false
// isEqualToSumEven(n: 6) == false
// isEqualToSumEven(n: 8) == true
func isEqualToSumEven(n: Int) -> Bool {
    var sum = 0
    var i = 2
    while sum < n {
        if n - sum == 2 {
            return true
        }
        sum += i
        i += 2
    }
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func isEqualToSumEven(n: Int) -> Bool {
    var count = 0
    var sum = 0
    for i in 2...n {
        if (sum + i) % 2 == 0 {
            count += 1
            sum += i
        }
        if count == 4 {
            return true
        }
    }
    return false
}
```swift
// Evaluate whether the given number n can be written as the sum of exactly 4 positive even numbers
// Example
// isEqualToSumEven(n: 4) == false
// isEqualToSumEven(n: 6) == false
// isEqualToSumEven(n: 8) == true
func isEqualToSumEven(n: Int) -> Bool {
    var count = 0
    var sum = 0
    for i in 2...n {
        if (sum + i) % 2 == 0 {
            count += 1
            sum += i
        }
        if count == 4 {
            return true
        }
    }
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func isEqualToSumEven(n: Int) -> Bool {
    var sum = 0
    for i in 2...n {
        if n % i == 0 {
            sum += i
            if sum == n {
                return true
            }
        }
    }
    return false
}
```swift
// Evaluate whether the given number n can be written as the sum of exactly 4 positive even numbers
// Example
// isEqualToSumEven(n: 4) == false
// isEqualToSumEven(n: 6) == false
// isEqualToSumEven(n: 8) == true
func isEqualToSumEven(n: Int) -> Bool {
    var sum = 0
    for i in 2...n {
        if n % i == 0 {
            sum += i
            if sum == n {
                return true
            }
        }
    }
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func isEqualToSumEven(n: Int) -> Bool {
    var result = false
    for i in 2...n {
        for j in 2...n {
            for k in 2...n {
                for l in 2...n {
                    if i + j + k + l == n {
                        result = true
                    }
                }
            }
        }
    }
    return result
}
```swift
// Evaluate whether the given number n can be written as the sum of exactly 4 positive even numbers
// Example
// isEqualToSumEven(n: 4) == false
// isEqualToSumEven(n: 6) == false
// isEqualToSumEven(n: 8) == true
func isEqualToSumEven(n: Int) -> Bool {
    var result = false
    for i in 2...n {
        for j in 2...n {
            for k in 2...n {
                for l in 2...n {
                    if i + j + k + l == n {
                        result = true
                    }
                }
            }
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func isEqualToSumEven(n: Int) -> Bool {
    var result = false
    for i in 2...n {
        if (n - i) % 2 == 0 {
            result = true
        }
    }
    return result
}
```swift
// Evaluate whether the given number n can be written as the sum of exactly 4 positive even numbers
// Example
// isEqualToSumEven(n: 4) == false
// isEqualToSumEven(n: 6) == false
// isEqualToSumEven(n: 8) == true
func isEqualToSumEven(n: Int) -> Bool {
    var result = false
    for i in 2...n {
        if (n - i) % 2 == 0 {
            result = true
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func isEqualToSumEven(n: Int) -> Bool {
    var result = false
    for i in 2...n {
        if (n - i) % 2 == 0 {
            result = true
            break
        }
    }
    return result
}
```swift
// Evaluate whether the given number n can be written as the sum of exactly 4 positive even numbers
// Example
// isEqualToSumEven(n: 4) == false
// isEqualToSumEven(n: 6) == false
// isEqualToSumEven(n: 8) == true
func isEqualToSumEven(n: Int) -> Bool {
    var result = false
    for i in 2...n {
        if (n - i) % 2 == 0 {
            result = true
            break
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func isEqualToSumEven(n: Int) -> Bool {
    var sum = 0
    for i in 2...n {
        if n % i == 0 {
            sum += i
            if sum == n {
                return true
            }
        }
    }
    return false
}
```swift
// Evaluate whether the given number n can be written as the sum of exactly 4 positive even numbers
// Example
// isEqualToSumEven(n: 4) == false
// isEqualToSumEven(n: 6) == false
// isEqualToSumEven(n: 8) == true
func isEqualToSumEven(n: Int) -> Bool {
    var sum = 0
    for i in 2...n {
        if n % i == 0 {
            sum += i
            if sum == n {
                return true
            }
        }
    }
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func specialFactorial(n: Int) -> Int {
    var result = 1
    for i in 1...n {
        result *= i
    }
    return result
}
```swift
// The Brazilian factorial is defined as:
// brazilian_factorial(n) = n! * (n-1)! * (n-2)! * ... * 1!
// where n > 0
// For example:
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var result = 1
    for i in 1...n {
        result *= i
    }
    return result
}

// The function receives an integer as input and should return the special
// factorial of this integer.
// For example:
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var result = 1
    for i in 1...n {
        result *= i
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
```swift
// The Brazilian factorial is defined as:
// brazilian_factorial(n) = n! * (n-1)! * (n-2)! * ... * 1!
// where n > 0
// For example:
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}

// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
<|file_separator|>
 // XCTAssertTrue failed

func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
```swift
// The Brazilian factorial is defined as:
// brazilian_factorial(n) = n! * (n-1)! * (n-2)! * ... * 1!
// where n > 0
// For example:
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
// The function will receive an integer as
 // XCTAssertTrue failed

func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
```swift
// The Brazilian factorial is defined as:
// brazilian_factorial(n) = n! * (n-1)! * (n-2)! * ... * 1!
// where n > 0
// For example:
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
<|file_separator|>
 // XCTAssertTrue failed

func specialFactorial(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n * specialFactorial(n: n - 1)
}

func factorial(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n * factorial(n: n - 1)
}

func brazilianFactorial(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return specialFactorial(n: n)
}
```swift
// The Brazilian factorial is defined as:
// brazilian_factorial(n) = n! * (n-1)! * (n-2)! * ... * 1!
// where n > 0
// For example:
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n * specialFactorial(n: n - 1)
}

// The function receives an integer as input and should return the factorial
// of this integer.
// factorial(n: 4) == 24
func factorial(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return n * factorial(n: n - 1)
}

// The function receives an integer as input and should return the
// Brazilian factorial of this integer.
// brazilianFactorial(n: 4) == 288
func brazilianFactorial(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return specialFactorial(n: n)
}

// The function receives an integer as input and should return the
// Brazilian factorial of this integer.
// brazilianFactorial(n: 4) == 288
func brazilianFactorial(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return specialFactorial(n: n)
}

// The function receives an integer as input and should return the
// Brazilian factorial of this integer.
// brazilianFactorial(n: 4) == 288
func brazilianFactorial(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return specialFactorial(n: n)
}

// The function receives an integer as input and should return the
// Brazilian factorial of this integer.
// brazilianFactorial(n: 4) == 288
func brazilianFactorial(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return specialFactorial(n: n)
}

// The function receives an integer as input and should return the
// Brazilian factorial of this integer.
// brazilianFactorial(n: 4) == 288
func brazilianFactorial(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return specialFactorial(n: n)
}

// The function receives an integer as input and should return the
// Brazilian factorial of this integer.
// brazilianFactorial(n: 4) == 288
func brazilianFactorial(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return specialFactorial(n: n)
}

// The function receives an integer as input and should return the
// Brazilian factorial of this integer.
// brazilianFactorial(n: 4) == 288
func brazilianFactorial(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return specialFactorial(n: n)
}

// The function receives an integer as input and should return the
// Brazilian factorial of this integer.
// brazilianFactorial(n: 4) == 288
func brazilianFactorial(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return specialFactorial(n: n)
}

// The function receives an integer as input and should return the
// Brazilian factorial of this integer.
// brazilianFactorial(n: 4) == 288
func brazilianFactorial(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return specialFactorial(n: n)
}

// The function receives an integer as input and should return the
// Brazilian factorial of this integer.
// brazilianFactorial(n: 4) == 288
func brazilianFactorial(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return specialFactorial(n: n)
}

// The function receives an integer as input and should return the
// Brazilian factorial of this integer.
// brazilianFactorial(n: 4) == 288
func brazilianFactorial(n: Int) -> Int {
    if n == 1 {
        return 1
    }
    return specialFactorial(n: n)
}

// The function receives an integer as input and should return the
// Brazilian factorial of this integer.
// brazilianFactorial(n: 4) == 288
func brazilianFactorial(n:
 // XCTAssertTrue failed

func specialFactorial(n: Int) -> Int {
    // your code here
}
```swift
// The Brazilian factorial is defined as:
// brazilian_factorial(n) = n! * (n-1)! * (n-2)! * ... * 1!
// where n > 0
// For example:
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    // your code here
}
<|file_separator|>
} // missing return in global function expected to return 'Int'

func specialFactorial(n: Int) -> Int {
    var result = 1
    for i in 1...n {
        result *= i
    }
    return result
}
```swift
// The Brazilian factorial is defined as:
// brazilian_factorial(n) = n! * (n-1)! * (n-2)! * ... * 1!
// where n > 0
// For example:
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var result = 1
    for i in 1...n {
        result *= i
    }
    return result
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var result = 1
    for i in 1...n {
        result *= i
    }
    return result
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var result = 1
    for i in 1...n {
        result *= i
    }
    return result
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var result = 1
    for i in 1...n {
        result *= i
    }
    return result
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var result = 1
    for i in 1...n {
        result *= i
    }
    return result
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var result = 1
    for i in 1...n {
        result *= i
    }
    return result
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var result = 1
    for i in 1...n {
        result *= i
    }
    return result
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var result = 1
    for i in 1...n {
        result *= i
    }
    return result
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var result = 1
    for i in 1...n {
        result *= i
    }
    return result
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var result = 1
    for i in 1...n {
        result *= i
    }
    return result
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var result = 1
    for i in 1...n {
        result *= i
    }
    return result
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var result = 1
    for i in 1...n {
        result *= i
    }
    return result
}
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var result = 1
    for i in 1...n {
        result *= i
    }
    return result
}
// The function will receive an integer as
 // XCTAssertTrue failed

func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
```swift
// The Brazilian factorial is defined as:
// brazilian_factorial(n) = n! * (n-1)! * (n-2)! * ... * 1!
// where n > 0
// For example:
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
<|file_separator|>
 // XCTAssertTrue failed

func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
```swift
// The Brazilian factorial is defined as:
// brazilian_factorial(n) = n! * (n-1)! * (n-2)! * ... * 1!
// where n > 0
// For example:
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
<|file_separator|>
 // XCTAssertTrue failed

func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
```swift
// The Brazilian factorial is defined as:
// brazilian_factorial(n) = n! * (n-1)! * (n-2)! * ... * 1!
// where n > 0
// For example:
// The function will receive an integer as input and should return the special
// factorial of this integer.
// specialFactorial(n: 4) == 288
func specialFactorial(n: Int) -> Int {
    var factorial = 1
    for i in 1...n {
        factorial *= i
    }
    return factorial
}
<|file_separator|>
 // XCTAssertTrue failed

func fixSpaces(text: String) -> String {
    var result = ""
    var lastSpace = false
    for char in text {
        if char == " " {
            if lastSpace {
                result += "-"
            } else {
                result += "_"
            }
            lastSpace = true
        } else {
            result += String(char)
            lastSpace = false
        }
    }
    return result
}
```swift
// Given a string text, replace all spaces in it with underscores, 
// and if a string has more than 2 consecutive spaces, 
// then replace all consecutive spaces with - 
// fixSpaces(text: " Example") == "Example"
// fixSpaces(text: " Example 1") == "Example_1"
// fixSpaces(text: " Example 2") == "_Example_2"
// fixSpaces(text: " Example 3") == "_Example-3"
func fixSpaces(text: String) -> String {
    var result = ""
    var lastSpace = false
    for char in text {
        if char == " " {
            if lastSpace {
                result += "-"
            } else {
                result += "_"
            }
            lastSpace = true
        } else {
            result += String(char)
            lastSpace = false
        }
    }
    return result
}

print(fixSpaces(text: " Example 3"))<|file_separator|>
 // XCTAssertTrue failed

func fixSpaces(text: String) -> String {
    var result = ""
    var count = 0
    for char in text {
        if char == " " {
            count += 1
        } else {
            if count > 1 {
                result += "-"
                count = 0
            }
            result += String(char)
        }
    }
    return result
}
```swift
// Given a string text, replace all spaces in it with underscores, 
// and if a string has more than 2 consecutive spaces, 
// then replace all consecutive spaces with - 
// fixSpaces(text: " Example") == "Example"
// fixSpaces(text: " Example 1") == "Example_1"
// fixSpaces(text: " Example 2") == "_Example_2"
// fixSpaces(text: " Example 3") == "_Example-3"
func fixSpaces(text: String) -> String {
    var result = ""
    var count = 0
    for char in text {
        if char == " " {
            count += 1
        } else {
            if count > 1 {
                result += "-"
                count = 0
            }
            result += String(char)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func fixSpaces(text: String) -> String {
    var result = ""
    var lastSpace = false
    for char in text {
        if char == " " {
            if lastSpace {
                result += "-"
            } else {
                result += "_"
            }
            lastSpace = true
        } else {
            result += String(char)
            lastSpace = false
        }
    }
    return result
}
```swift
// Given a string text, replace all spaces in it with underscores, 
// and if a string has more than 2 consecutive spaces, 
// then replace all consecutive spaces with - 
// fixSpaces(text: " Example") == "Example"
// fixSpaces(text: " Example 1") == "Example_1"
// fixSpaces(text: " Example 2") == "_Example_2"
// fixSpaces(text: " Example 3") == "_Example-3"
func fixSpaces(text: String) -> String {
    var result = ""
    var lastSpace = false
    for char in text {
        if char == " " {
            if lastSpace {
                result += "-"
            } else {
                result += "_"
            }
            lastSpace = true
        } else {
            result += String(char)
            lastSpace = false
        }
    }
    return result
}

print(fixSpaces(text: " Example"))
print(fixSpaces(text: " Example 1"))
print(fixSpaces(text: " Example 2"))
print(fixSpaces(text: " Example 3"))
<|file_separator|>
 // XCTAssertTrue failed

func fixSpaces(text: String) -> String {
    var result = ""
    for char in text {
        if char == " " {
            result += "-"
        } else {
            result += String(char)
        }
    }
    return result
}
```swift
// Given a string text, replace all spaces in it with underscores, 
// and if a string has more than 2 consecutive spaces, 
// then replace all consecutive spaces with - 
// fixSpaces(text: " Example") == "Example"
// fixSpaces(text: " Example 1") == "Example_1"
// fixSpaces(text: " Example 2") == "_Example_2"
// fixSpaces(text: " Example 3") == "_Example-3"
func fixSpaces(text: String) -> String {
    var result = ""
    for char in text {
        if char == " " {
            result += "-"
        } else {
            result += String(char)
        }
    }
    return result
}

// Given an array of integers, find the maximum product of two integers in the array.
// maxProduct([2, 3, 1, 5]) == 6
// maxProduct([3, 2, 1, 5]) == 10
// maxProduct([1, 9, 8, 6]) == 9
// maxProduct([1, 5, 6, 2]) == 12
// maxProduct([1, 5, 3, 2]) == 9
// maxProduct([1, 5, 3, 7]) == 21
// maxProduct([1, 5, 3, 7, 8]) == 42
// maxProduct([1, 5, 3, 7, 8, 9]) == 84
// maxProduct([1, 5, 3, 7, 8, 9, 10]) == 840
// maxProduct([1, 5, 3, 7, 8, 9, 10, 11]) == 8400
// maxProduct([1, 5, 3, 7, 8, 9, 10, 11, 12]) == 84000
// maxProduct([1, 5, 3, 7, 8, 9, 10, 11, 12, 13]) == 840000
// maxProduct([1, 5, 3, 7, 8, 9, 10, 11, 12, 13, 14]) == 8400000
// maxProduct([1, 5, 3, 7, 8, 9, 10, 11, 12, 13, 14, 15]) == 84000000
// maxProduct([1, 5, 3, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]) == 840000000
// maxProduct([1, 5, 3, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17]) == 8400000000
// maxProduct([1, 5, 3, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18]) == 84000000000
// maxProduct([1, 5, 3, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19]) == 840000000000
// maxProduct([1, 5, 3, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]) == 8400000000000
// maxProduct([1, 5, 3, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21]) == 84000000000000
// maxProduct([1, 5, 3, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22]) == 8400000000
 // XCTAssertTrue failed

func fixSpaces(text: String) -> String {
    var result = ""
    var count = 0
    for i in 0..<text.count {
        if text[text.index(text.startIndex, offsetBy: i)] == " " {
            count += 1
        } else {
            if count > 1 {
                result += "-"
                count = 0
            }
            result += String(text[text.index(text.startIndex, offsetBy: i)])
        }
    }
    return result
}
```swift
// Given a string text, replace all spaces in it with underscores, 
// and if a string has more than 2 consecutive spaces, 
// then replace all consecutive spaces with - 
// fixSpaces(text: " Example") == "Example"
// fixSpaces(text: " Example 1") == "Example_1"
// fixSpaces(text: " Example 2") == "_Example_2"
// fixSpaces(text: " Example 3") == "_Example-3"
func fixSpaces(text: String) -> String {
    var result = ""
    var count = 0
    for i in 0..<text.count {
        if text[text.index(text.startIndex, offsetBy: i)] == " " {
            count += 1
        } else {
            if count > 1 {
                result += "-"
                count = 0
            }
            result += String(text[text.index(text.startIndex, offsetBy: i)])
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func fixSpaces(text: String) -> String {
    var result = ""
    var lastSpace = false
    for char in text {
        if char == " " {
            if lastSpace {
                result += "-"
            } else {
                result += "_"
            }
            lastSpace = true
        } else {
            result += String(char)
            lastSpace = false
        }
    }
    return result
}
```swift
// Given a string text, replace all spaces in it with underscores, 
// and if a string has more than 2 consecutive spaces, 
// then replace all consecutive spaces with - 
// fixSpaces(text: " Example") == "Example"
// fixSpaces(text: " Example 1") == "Example_1"
// fixSpaces(text: " Example 2") == "_Example_2"
// fixSpaces(text: " Example 3") == "_Example-3"
func fixSpaces(text: String) -> String {
    var result = ""
    var lastSpace = false
    for char in text {
        if char == " " {
            if lastSpace {
                result += "-"
            } else {
                result += "_"
            }
            lastSpace = true
        } else {
            result += String(char)
            lastSpace = false
        }
    }
    return result
}<|file_separator|>
 // XCTAssertTrue failed

func fixSpaces(text: String) -> String {
    var result = ""
    var lastSpace = false
    for char in text {
        if char == " " {
            if lastSpace {
                result += "-"
            } else {
                result += "_"
                lastSpace = true
            }
        } else {
            result += String(char)
            lastSpace = false
        }
    }
    return result
}
```swift
// Given a string text, replace all spaces in it with underscores, 
// and if a string has more than 2 consecutive spaces, 
// then replace all consecutive spaces with - 
// fixSpaces(text: " Example") == "Example"
// fixSpaces(text: " Example 1") == "Example_1"
// fixSpaces(text: " Example 2") == "_Example_2"
// fixSpaces(text: " Example 3") == "_Example-3"
func fixSpaces(text: String) -> String {
    var result = ""
    var lastSpace = false
    for char in text {
        if char == " " {
            if lastSpace {
                result += "-"
            } else {
                result += "_"
                lastSpace = true
            }
        } else {
            result += String(char)
            lastSpace = false
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func fixSpaces(text: String) -> String {
    var result = ""
    var lastSpace = false
    for char in text {
        if char == " " {
            if lastSpace {
                result += "-"
            } else {
                result += "_"
                lastSpace = true
            }
        } else {
            result += String(char)
            lastSpace = false
        }
    }
    return result
}
```swift
// Given a string text, replace all spaces in it with underscores, 
// and if a string has more than 2 consecutive spaces, 
// then replace all consecutive spaces with - 
// fixSpaces(text: " Example") == "Example"
// fixSpaces(text: " Example 1") == "Example_1"
// fixSpaces(text: " Example 2") == "_Example_2"
// fixSpaces(text: " Example 3") == "_Example-3"
func fixSpaces(text: String) -> String {
    var result = ""
    var lastSpace = false
    for char in text {
        if char == " " {
            if lastSpace {
                result += "-"
            } else {
                result += "_"
                lastSpace = true
            }
        } else {
            result += String(char)
            lastSpace = false
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func fixSpaces(text: String) -> String {
    var result = ""
    var lastSpace = false
    for char in text {
        if char == " " {
            if lastSpace {
                result += "-"
            } else {
                result += "_"
            }
            lastSpace = true
        } else {
            result += String(char)
            lastSpace = false
        }
    }
    return result
}
```swift
// Given a string text, replace all spaces in it with underscores, 
// and if a string has more than 2 consecutive spaces, 
// then replace all consecutive spaces with - 
// fixSpaces(text: " Example") == "Example"
// fixSpaces(text: " Example 1") == "Example_1"
// fixSpaces(text: " Example 2") == "_Example_2"
// fixSpaces(text: " Example 3") == "_Example-3"
func fixSpaces(text: String) -> String {
    var result = ""
    var lastSpace = false
    for char in text {
        if char == " " {
            if lastSpace {
                result += "-"
            } else {
                result += "_"
            }
            lastSpace = true
        } else {
            result += String(char)
            lastSpace = false
        }
    }
    return result
}<|file_separator|>
 // XCTAssertTrue failed

func fixSpaces(text: String) -> String {
    var result = ""
    var count = 0
    for char in text {
        if char == " " {
            count += 1
        } else {
            if count > 2 {
                result += "-"
                count = 1
            } else {
                result += String(char)
                count = 0
            }
        }
    }
    return result
}
```swift
// Given a string text, replace all spaces in it with underscores, 
// and if a string has more than 2 consecutive spaces, 
// then replace all consecutive spaces with - 
// fixSpaces(text: " Example") == "Example"
// fixSpaces(text: " Example 1") == "Example_1"
// fixSpaces(text: " Example 2") == "_Example_2"
// fixSpaces(text: " Example 3") == "_Example-3"
func fixSpaces(text: String) -> String {
    var result = ""
    var count = 0
    for char in text {
        if char == " " {
            count += 1
        } else {
            if count > 2 {
                result += "-"
                count = 1
            } else {
                result += String(char)
                count = 0
            }
        }
    }
    return result
}

print(fixSpaces(text: " Example"))
print(fixSpaces(text: " Example 1"))
print(fixSpaces(text: " Example 2"))
print(fixSpaces(text: " Example 3"))<|file_separator|>
 // XCTAssertTrue failed

```swift
// Create a function which takes a string representing a file's name, and returns
// 'Yes' if the the file's name is valid, and returns 'No' otherwise.
// A file's name is considered to be valid if and only if all the following conditions 
// are met:
// - There should not be more than three digits ('0'-'9') in the file's name.
// - The file's name contains exactly one dot '.'
// - The substring before the dot should not be empty, and it starts with a letter from 
// the latin alphapet ('a'-'z' and 'A'-'Z').
// - The substring after the dot should be one of these: ['txt', 'exe', 'dll']
// Examples:
// fileNameCheck(fileName: "example.txt") == "Yes"
// fileNameCheck(fileName: "1example.dll") == "No"
func fileNameCheck(fileName: String) -> String {
    let regex = "[0-9]{3}"
    let regex2 = "[a-zA-Z]"
    let regex3 = "[a-zA-Z0-9]"
    let regex4 = "[a-zA-Z0-9.]"
    let regex5 = "[a-zA-Z0-9.txt]"
    let regex6 = "[a-zA-Z0-9.exe]"
    let regex7 = "[a-zA-Z0-9.dll]"
    let regex8 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex9 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex10 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex11 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex12 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex13 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex14 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex15 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex16 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex17 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex18 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex19 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex20 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex21 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex22 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex23 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex24 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex25 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex26 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex27 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex28 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex29 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex30 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex31 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex32 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex33 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex34 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex35 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex36 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex37 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex38 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex39 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex40 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex41 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex42 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex43 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex44 = "[a-zA-Z0
XCTAssertTrue(fileNameCheck(fileName: "example.txt") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "1example.dll") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "s1sdf3.asd") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "K.dll") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "MY16FILE3.exe") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "His12FILE94.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "_Y.txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "?aREYA.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "/thisIsValid.dll") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIsValid.wow") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIsValid.txt") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIsValid.txtexe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "#this2I4s5valid.ten") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "@this1Is6Valid.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIs12valid.6exe4.txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "all.exe.txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "I563_No.exe") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "Is3youfault.txt") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "noOne#knows.dll") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "1I563_Yes3.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "I563_Yes3.txtt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "final..txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "final132") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "F4indsartal132.") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: ".txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "s.") == "No") // cannot find 'fileNameCheck' in scope

func fileNameCheck(fileName: String) -> String {
    let regex = "^[a-zA-Z]{1}[a-zA-Z0-9]{0,2}\.[a-zA-Z]{3}$"
    let regexTest = NSPredicate(format: "SELF MATCHES %@", regex)
    if regexTest.evaluate(with: fileName) {
        return "Yes"
    } else {
        return "No"
    }
}
```swift
// Create a function which takes a string representing a file's name, and returns
// 'Yes' if the the file's name is valid, and returns 'No' otherwise.
// A file's name is considered to be valid if and only if all the following conditions 
// are met:
// - There should not be more than three digits ('0'-'9') in the file's name.
// - The file's name contains exactly one dot '.'
// - The substring before the dot should not be empty, and it starts with a letter from 
// the latin alphapet ('a'-'z' and 'A'-'Z').
// - The substring after the dot should be one of these: ['txt', 'exe', 'dll']
// Examples:
// fileNameCheck(fileName: "example.txt") == "Yes"
// fileNameCheck(fileName: "1example.dll") == "No"
func fileNameCheck(fileName: String) -> String {
    let regex = "^[a-zA-Z]{1}[a-zA-Z0-9]{0,2}\.[a-zA-Z]{3}$"
    let regexTest = NSPredicate(format: "SELF MATCHES %@", regex)
    if regexTest.evaluate(with: fileName) {
        return "Yes"
    } else {
        return "No"
    }
}
<|file_separator|>
let regex = "^[a-zA-Z]{1}[a-zA-Z0-9]{0,2}\.[a-zA-Z]{3}$" // invalid escape sequence in literal

```swift
// Create a function which takes a string representing a file's name, and returns
// 'Yes' if the the file's name is valid, and returns 'No' otherwise.
// A file's name is considered to be valid if and only if all the following conditions 
// are met:
// - There should not be more than three digits ('0'-'9') in the file's name.
// - The file's name contains exactly one dot '.'
// - The substring before the dot should not be empty, and it starts with a letter from 
// the latin alphapet ('a'-'z' and 'A'-'Z').
// - The substring after the dot should be one of these: ['txt', 'exe', 'dll']
// Examples:
// fileNameCheck(fileName: "example.txt") == "Yes"
// fileNameCheck(fileName: "1example.dll") == "No"
func fileNameCheck(fileName: String) -> String {
    let regex = "[0-9]{3,}"
    let regex2 = "[a-zA-Z]"
    let regex3 = "[a-zA-Z0-9]"
    let regex4 = "[a-zA-Z0-9.]"
    let regex5 = "[a-zA-Z0-9.txt]"
    let regex6 = "[a-zA-Z0-9.exe]"
    let regex7 = "[a-zA-Z0-9.dll]"
    let regex8 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex9 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex10 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex11 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex12 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex13 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex14 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex15 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex16 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex17 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex18 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex19 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex20 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex21 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex22 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex23 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex24 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex25 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex26 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex27 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex28 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex29 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex30 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex31 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex32 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex33 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex34 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex35 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex36 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex37 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex38 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex39 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex40 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex41 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex42 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex43 = "[a-zA-Z0-9.txt, .exe, .dll]"
    let regex44 = "[a-zA-Z
XCTAssertTrue(fileNameCheck(fileName: "example.txt") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "1example.dll") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "s1sdf3.asd") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "K.dll") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "MY16FILE3.exe") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "His12FILE94.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "_Y.txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "?aREYA.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "/thisIsValid.dll") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIsValid.wow") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIsValid.txt") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIsValid.txtexe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "#this2I4s5valid.ten") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "@this1Is6Valid.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIs12valid.6exe4.txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "all.exe.txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "I563_No.exe") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "Is3youfault.txt") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "noOne#knows.dll") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "1I563_Yes3.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "I563_Yes3.txtt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "final..txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "final132") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "F4indsartal132.") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: ".txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "s.") == "No") // cannot find 'fileNameCheck' in scope

```swift
// Create a function which takes a string representing a file's name, and returns
// 'Yes' if the the file's name is valid, and returns 'No' otherwise.
// A file's name is considered to be valid if and only if all the following conditions 
// are met:
// - There should not be more than three digits ('0'-'9') in the file's name.
// - The file's name contains exactly one dot '.'
// - The substring before the dot should not be empty, and it starts with a letter from 
// the latin alphapet ('a'-'z' and 'A'-'Z').
// - The substring after the dot should be one of these: ['txt', 'exe', 'dll']
// Examples:
// fileNameCheck(fileName: "example.txt") == "Yes"
// fileNameCheck(fileName: "1example.dll") == "No"
func fileNameCheck(fileName: String) -> String {
    let regex = "([a-z]|[A-Z])([0-9])([0-9])([0-9])"
    let regex2 = "([a-z]|[A-Z])([0-9])([0-9])"
    let regex3 = "([a-z]|[A-Z])([0-9])"
    let regex4 = "([a-z]|[A-Z])"
    let regex5 = "([a-z]|[A-Z])([0-9])"
    let regex6 = "([a-z]|[A-Z])([0-9])([0-9])"
    let regex7 = "([a-z]|[A-Z])([0-9])([0-9])([0-9])"
    let regex8 = "([a-z]|[A-Z])([0-9])([0-9])([0-9])([0-9])"
    let regex9 = "([a-z]|[A-Z])([0-9])([0-9])([0-9])([0-9])([0-9])"
    let regex10 = "([a-z]|[A-Z])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])"
    let regex11 = "([a-z]|[A-Z])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])"
    let regex12 = "([a-z]|[A-Z])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])"
    let regex13 = "([a-z]|[A-Z])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])"
    let regex14 = "([a-z]|[A-Z])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])"
    let regex15 = "([a-z]|[A-Z])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])"
    let regex16 = "([a-z]|[A-Z])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])"
    let regex17 = "([a-z]|[A-Z])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])"
    let regex18 = "([a-z]|[A-Z])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])"
    let regex19 = "([a-z]|[A-Z])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])"
    let regex20 = "([a-z]|[A-Z])([0-9])([0-9])([0-9])([0-9])([0-9])
XCTAssertTrue(fileNameCheck(fileName: "example.txt") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "1example.dll") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "s1sdf3.asd") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "K.dll") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "MY16FILE3.exe") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "His12FILE94.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "_Y.txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "?aREYA.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "/thisIsValid.dll") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIsValid.wow") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIsValid.txt") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIsValid.txtexe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "#this2I4s5valid.ten") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "@this1Is6Valid.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIs12valid.6exe4.txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "all.exe.txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "I563_No.exe") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "Is3youfault.txt") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "noOne#knows.dll") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "1I563_Yes3.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "I563_Yes3.txtt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "final..txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "final132") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "F4indsartal132.") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: ".txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "s.") == "No") // cannot find 'fileNameCheck' in scope

func fileNameCheck(fileName: String) -> String {
    let regex = "^[a-zA-Z]+\\.[a-zA-Z0-9]+$"
    let regexPattern = NSPredicate(format: "SELF MATCHES %@", regex)
    let isValid = regexPattern.evaluate(with: fileName)
    if isValid {
        return "Yes"
    } else {
        return "No"
    }
}
```swift
// Create a function which takes a string representing a file's name, and returns
// 'Yes' if the the file's name is valid, and returns 'No' otherwise.
// A file's name is considered to be valid if and only if all the following conditions 
// are met:
// - There should not be more than three digits ('0'-'9') in the file's name.
// - The file's name contains exactly one dot '.'
// - The substring before the dot should not be empty, and it starts with a letter from 
// the latin alphapet ('a'-'z' and 'A'-'Z').
// - The substring after the dot should be one of these: ['txt', 'exe', 'dll']
// Examples:
// fileNameCheck(fileName: "example.txt") == "Yes"
// fileNameCheck(fileName: "1example.dll") == "No"
func fileNameCheck(fileName: String) -> String {
    let regex = "^[a-zA-Z]+\\.[a-zA-Z0-9]+$"
    let regexPattern = NSPredicate(format: "SELF MATCHES %@", regex)
    let isValid = regexPattern.evaluate(with: fileName)
    if isValid {
        return "Yes"
    } else {
        return "No"
    }
}
<|file_separator|>
 // XCTAssertTrue failed

```swift
// Create a function which takes a string representing a file's name, and returns
// 'Yes' if the the file's name is valid, and returns 'No' otherwise.
// A file's name is considered to be valid if and only if all the following conditions 
// are met:
// - There should not be more than three digits ('0'-'9') in the file's name.
// - The file's name contains exactly one dot '.'
// - The substring before the dot should not be empty, and it starts with a letter from 
// the latin alphapet ('a'-'z' and 'A'-'Z').
// - The substring after the dot should be one of these: ['txt', 'exe', 'dll']
// Examples:
// fileNameCheck(fileName: "example.txt") == "Yes"
// fileNameCheck(fileName: "1example.dll") == "No"
func fileNameCheck(fileName: String) -> String {
    let regex = "([a-zA-Z])\\w{0,2}\\.(exe|txt|dll)"
    let regex2 = "([0-9])"
    let regex3 = "([a-zA-Z])"
    let regex4 = "([0-9])"
    let regex5 = "([a-zA-Z])"
    let regex6 = "([0-9])"
    let regex7 = "([a-zA-Z])"
    let regex8 = "([0-9])"
    let regex9 = "([a-zA-Z])"
    let regex10 = "([0-9])"
    let regex11 = "([a-zA-Z])"
    let regex12 = "([0-9])"
    let regex13 = "([a-zA-Z])"
    let regex14 = "([0-9])"
    let regex15 = "([a-zA-Z])"
    let regex16 = "([0-9])"
    let regex17 = "([a-zA-Z])"
    let regex18 = "([0-9])"
    let regex19 = "([a-zA-Z])"
    let regex20 = "([0-9])"
    let regex21 = "([a-zA-Z])"
    let regex22 = "([0-9])"
    let regex23 = "([a-zA-Z])"
    let regex24 = "([0-9])"
    let regex25 = "([a-zA-Z])"
    let regex26 = "([0-9])"
    let regex27 = "([a-zA-Z])"
    let regex28 = "([0-9])"
    let regex29 = "([a-zA-Z])"
    let regex30 = "([0-9])"
    let regex31 = "([a-zA-Z])"
    let regex32 = "([0-9])"
    let regex33 = "([a-zA-Z])"
    let regex34 = "([0-9])"
    let regex35 = "([a-zA-Z])"
    let regex36 = "([0-9])"
    let regex37 = "([a-zA-Z])"
    let regex38 = "([0-9])"
    let regex39 = "([a-zA-Z])"
    let regex40 = "([0-9])"
    let regex41 = "([a-zA-Z])"
    let regex42 = "([0-9])"
    let regex43 = "([a-zA-Z])"
    let regex44 = "([0-9])"
    let regex45 = "([a-zA-Z])"
    let regex46 = "([0-9])"
    let regex47 = "([a-zA-Z])"
    let regex48 = "([0-9])"
    let regex49 = "([a-zA-Z])"
    let regex50 = "([0-9])"
    let regex51 = "([a-zA-Z])"
    let regex52 = "([0-9])"
    let regex53 = "([a-zA-Z])"
    let regex54 = "([0-9])"
    let regex55 = "([a-zA-Z])"
    let regex56 = "([0-9])"
    let regex57 = "([a-zA-Z])"
    let regex58 = "([0-9])"
    let regex59 = "([a-zA-Z])"
    let regex60 = "([0-9])"
    let regex61 = "([a-zA-Z])"
    let regex62 = "([0-9])"
    let regex63 = "([a-zA-Z])"
    let regex64 = "([0-9])"
    let regex65 = "([a-zA-Z])"
    let regex66 = "([0-9])"
    let regex67 = "([a-zA-Z])"
    let regex68 = "([0-9])"
XCTAssertTrue(fileNameCheck(fileName: "example.txt") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "1example.dll") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "s1sdf3.asd") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "K.dll") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "MY16FILE3.exe") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "His12FILE94.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "_Y.txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "?aREYA.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "/thisIsValid.dll") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIsValid.wow") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIsValid.txt") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIsValid.txtexe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "#this2I4s5valid.ten") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "@this1Is6Valid.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIs12valid.6exe4.txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "all.exe.txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "I563_No.exe") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "Is3youfault.txt") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "noOne#knows.dll") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "1I563_Yes3.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "I563_Yes3.txtt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "final..txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "final132") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "F4indsartal132.") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: ".txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "s.") == "No") // cannot find 'fileNameCheck' in scope

func fileNameCheck(fileName: String) -> String {
    let regex = "^[a-zA-Z]+\\.[a-zA-Z0-9]+$"
    let regexPattern = NSPredicate(format: "SELF MATCHES %@", regex)
    let isValid = regexPattern.evaluate(with: fileName)
    if isValid {
        return "Yes"
    } else {
        return "No"
    }
}
```swift
// Create a function which takes a string representing a file's name, and returns
// 'Yes' if the the file's name is valid, and returns 'No' otherwise.
// A file's name is considered to be valid if and only if all the following conditions 
// are met:
// - There should not be more than three digits ('0'-'9') in the file's name.
// - The file's name contains exactly one dot '.'
// - The substring before the dot should not be empty, and it starts with a letter from 
// the latin alphapet ('a'-'z' and 'A'-'Z').
// - The substring after the dot should be one of these: ['txt', 'exe', 'dll']
// Examples:
// fileNameCheck(fileName: "example.txt") == "Yes"
// fileNameCheck(fileName: "1example.dll") == "No"
func fileNameCheck(fileName: String) -> String {
    let regex = "^[a-zA-Z]+\\.[a-zA-Z0-9]+$"
    let regexPattern = NSPredicate(format: "SELF MATCHES %@", regex)
    let isValid = regexPattern.evaluate(with: fileName)
    if isValid {
        return "Yes"
    } else {
        return "No"
    }
}
<|file_separator|>
 // XCTAssertTrue failed

func fileNameCheck(fileName: String) -> String {
    // 1. Check if the file name has more than 3 digits
    let regex = try! NSRegularExpression(pattern: "\\d{4,}")
    if regex.firstMatch(in: fileName, options: [], range: NSRange(location: 0, length: fileName.count)) != nil {
        return "No"
    }
    
    // 2. Check if the file name has a dot
    if fileName.contains(".") == false {
        return "No"
    }
    
    // 3. Check if the substring before the dot is empty
    let beforeDot = fileName.substring(to: fileName.index(before: fileName.endIndex))
    if beforeDot.isEmpty {
        return "No"
    }
    
    // 4. Check if the substring before the dot is a letter
    let beforeDotRange = NSRange(location: 0, length: beforeDot.count)
    if NSCharacterSet.letters.characterIsMember(beforeDot[beforeDotRange]) == false {
        return "No"
    }
    
    // 5. Check if the substring after the dot is one of these: ['txt', 'exe', 'dll']
    let afterDot = fileName.substring(from: fileName.index(after: fileName.firstIndex(of: ".")!))
    if afterDot == "txt" || afterDot == "exe" || afterDot == "dll" {
        return "Yes"
    } else {
        return "No"
    }
}
```swift
// Create a function which takes a string representing a file's name, and returns
// 'Yes' if the the file's name is valid, and returns 'No' otherwise.
// A file's name is considered to be valid if and only if all the following conditions 
// are met:
// - There should not be more than three digits ('0'-'9') in the file's name.
// - The file's name contains exactly one dot '.'
// - The substring before the dot should not be empty, and it starts with a letter from 
// the latin alphapet ('a'-'z' and 'A'-'Z').
// - The substring after the dot should be one of these: ['txt', 'exe', 'dll']
// Examples:
// fileNameCheck(fileName: "example.txt") == "Yes"
// fileNameCheck(fileName: "1example.dll") == "No"
func fileNameCheck(fileName: String) -> String {
    // 1. Check if the file name has more than 3 digits
    let regex = try! NSRegularExpression(pattern: "\\d{4,}")
    if regex.firstMatch(in: fileName, options: [], range: NSRange(location: 0, length: fileName.count)) != nil {
        return "No"
    }
    
    // 2. Check if the file name has a dot
    if fileName.contains(".") == false {
        return "No"
    }
    
    // 3. Check if the substring before the dot is empty
    let beforeDot = fileName.substring(to: fileName.index(before: fileName.endIndex))
    if beforeDot.isEmpty {
        return "No"
    }
    
    // 4. Check if the substring before the dot is a letter
    let beforeDotRange = NSRange(location: 0, length: beforeDot.count)
    if NSCharacterSet.letters.characterIsMember(beforeDot[beforeDotRange]) == false {
        return "No"
    }
    
    // 5. Check if the substring after the dot is one of these: ['txt', 'exe', 'dll']
    let afterDot = fileName.substring(from: fileName.index(after: fileName.firstIndex(of: ".")!))
    if afterDot == "txt" || afterDot == "exe" || afterDot == "dll" {
        return "Yes"
    } else {
        return "No"
    }
}
<|file_separator|>
let beforeDot = fileName.substring(to: fileName.index(before: fileName.endIndex)) // 'substring(to:)' is deprecated: Please use String slicing subscript with a 'partial range upto' operator.
if NSCharacterSet.letters.characterIsMember(beforeDot[beforeDotRange]) == false { // subscript 'subscript(_:)' requires that 'NSRange' (aka '_NSRange') conform to 'RangeExpression'
if NSCharacterSet.letters.characterIsMember(beforeDot[beforeDotRange]) == false { // value of type 'CharacterSet' has no member 'characterIsMember'
let afterDot = fileName.substring(from: fileName.index(after: fileName.firstIndex(of: ".")!)) // 'substring(from:)' is deprecated: Please use String slicing subscript with a 'partial range from' operator.

```swift
// Create a function which takes a string representing a file's name, and returns
// 'Yes' if the the file's name is valid, and returns 'No' otherwise.
// A file's name is considered to be valid if and only if all the following conditions 
// are met:
// - There should not be more than three digits ('0'-'9') in the file's name.
// - The file's name contains exactly one dot '.'
// - The substring before the dot should not be empty, and it starts with a letter from 
// the latin alphapet ('a'-'z' and 'A'-'Z').
// - The substring after the dot should be one of these: ['txt', 'exe', 'dll']
// Examples:
// fileNameCheck(fileName: "example.txt") == "Yes"
// fileNameCheck(fileName: "1example.dll") == "No"
func fileNameCheck(fileName: String) -> String {
  let regex = "([a-z]|[A-Z])([0-9])([0-9])([0-9])"
  let regex2 = "([a-z]|[A-Z])([0-9])([0-9])"
  let regex3 = "([a-z]|[A-Z])([0-9])"
  let regex4 = "([a-z]|[A-Z])([0-9])"
  let regex5 = "([a-z]|[A-Z])([0-9])"
  let regex6 = "([a-z]|[A-Z])([0-9])"
  let regex7 = "([a-z]|[A-Z])([0-9])"
  let regex8 = "([a-z]|[A-Z])([0-9])"
  let regex9 = "([a-z]|[A-Z])([0-9])"
  let regex10 = "([a-z]|[A-Z])([0-9])"
  let regex11 = "([a-z]|[A-Z])([0-9])"
  let regex12 = "([a-z]|[A-Z])([0-9])"
  let regex13 = "([a-z]|[A-Z])([0-9])"
  let regex14 = "([a-z]|[A-Z])([0-9])"
  let regex15 = "([a-z]|[A-Z])([0-9])"
  let regex16 = "([a-z]|[A-Z])([0-9])"
  let regex17 = "([a-z]|[A-Z])([0-9])"
  let regex18 = "([a-z]|[A-Z])([0-9])"
  let regex19 = "([a-z]|[A-Z])([0-9])"
  let regex20 = "([a-z]|[A-Z])([0-9])"
  let regex21 = "([a-z]|[A-Z])([0-9])"
  let regex22 = "([a-z]|[A-Z])([0-9])"
  let regex23 = "([a-z]|[A-Z])([0-9])"
  let regex24 = "([a-z]|[A-Z])([0-9])"
  let regex25 = "([a-z]|[A-Z])([0-9])"
  let regex26 = "([a-z]|[A-Z])([0-9])"
  let regex27 = "([a-z]|[A-Z])([0-9])"
  let regex28 = "([a-z]|[A-Z])([0-9])"
  let regex29 = "([a-z]|[A-Z])([0-9])"
  let regex30 = "([a-z]|[A-Z])([0-9])"
  let regex31 = "([a-z]|[A-Z])([0-9])"
  let regex32 = "([a-z]|[A-Z])([0-9])"
  let regex33 = "([a-z]|[A-Z])([0-9])"
  let regex34 = "([a-z]|[A-Z])([0-9])"
  let regex35 = "([a-z]|[A-Z])([0-9])"
  let regex36 = "([a-z]|[A-Z])([0-9])"
  let regex37 = "([a-z]|[A-Z])([0-9])"
  let regex38 = "([a-z]|[A-Z])([0-9])"
  let regex39 = "([a-z]|[A-Z])([0-9])"
  let regex40 = "([a-z]|[A-Z])([0-9])"
  let regex41 = "([a-z]|[A-Z])([0-9])"
  let regex42 = "([a-z]|[A-Z])([0-9])"
  let regex43 = "([a-
XCTAssertTrue(fileNameCheck(fileName: "example.txt") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "1example.dll") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "s1sdf3.asd") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "K.dll") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "MY16FILE3.exe") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "His12FILE94.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "_Y.txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "?aREYA.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "/thisIsValid.dll") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIsValid.wow") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIsValid.txt") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIsValid.txtexe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "#this2I4s5valid.ten") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "@this1Is6Valid.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "thisIs12valid.6exe4.txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "all.exe.txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "I563_No.exe") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "Is3youfault.txt") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "noOne#knows.dll") == "Yes") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "1I563_Yes3.exe") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "I563_Yes3.txtt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "final..txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "final132") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "F4indsartal132.") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: ".txt") == "No") // cannot find 'fileNameCheck' in scope
XCTAssertTrue(fileNameCheck(fileName: "s.") == "No") // cannot find 'fileNameCheck' in scope

func fileNameCheck(fileName: String) -> String {
    let regex = "^[a-zA-Z]+\\.[a-zA-Z0-9]+$"
    let regexPattern = NSPredicate(format: "SELF MATCHES %@", regex)
    let isValid = regexPattern.evaluate(with: fileName)
    return isValid ? "Yes" : "No"
}
```swift
// Create a function which takes a string representing a file's name, and returns
// 'Yes' if the the file's name is valid, and returns 'No' otherwise.
// A file's name is considered to be valid if and only if all the following conditions 
// are met:
// - There should not be more than three digits ('0'-'9') in the file's name.
// - The file's name contains exactly one dot '.'
// - The substring before the dot should not be empty, and it starts with a letter from 
// the latin alphapet ('a'-'z' and 'A'-'Z').
// - The substring after the dot should be one of these: ['txt', 'exe', 'dll']
// Examples:
// fileNameCheck(fileName: "example.txt") == "Yes"
// fileNameCheck(fileName: "1example.dll") == "No"
func fileNameCheck(fileName: String) -> String {
    let regex = "^[a-zA-Z]+\\.[a-zA-Z0-9]+$"
    let regexPattern = NSPredicate(format: "SELF MATCHES %@", regex)
    let isValid = regexPattern.evaluate(with: fileName)
    return isValid ? "Yes" : "No"
}
<|file_separator|>
 // XCTAssertTrue failed

func wordsInSentence(sentence: String) -> String {
    let words = sentence.split(separator: " ")
    var result = ""
    for word in words {
        if isPrime(word.count) {
            result += word + " "
        }
    }
    return result.trimmingCharacters(in: .whitespaces)
}

func isPrime(_ num: Int) -> Bool {
    if num <= 1 {
        return false
    }
    for i in 2..<num {
        if num % i == 0 {
            return false
        }
    }
    return true
}
```swift
// You are given a string representing a sentence,
// the sentence contains some words separated by a space,
// and you have to return a string that contains the words from the original sentence,
// whose lengths are prime numbers,
// the order of the words in the new string should be the same as the original one.
// Example 1:
// Example 2:
// Constraints:
// * 1 <= len(sentence) <= 100
// * sentence contains only letters
// wordsInSentence(sentence: "This is a test") == "is"
// wordsInSentence(sentence: "lets go for swimming") == "go for"
func wordsInSentence(sentence: String) -> String {
    let words = sentence.split(separator: " ")
    var result = ""
    for word in words {
        if isPrime(word.count) {
            result += word + " "
        }
    }
    return result.trimmingCharacters(in: .whitespaces)
}

func isPrime(_ num: Int) -> Bool {
    if num <= 1 {
        return false
    }
    for i in 2..<num {
        if num % i == 0 {
            return false
        }
    }
    return true
}
<|file_separator|>

func wordsInSentence(sentence: String) -> String {
    var result = ""
    var words = sentence.components(separatedBy: " ")
    for i in 0..<words.count {
        if isPrime(words[i].count) {
            result += words[i] + " "
        }
    }
    return result.trimmingCharacters(in: .whitespaces)
}

func isPrime(_ num: Int) -> Bool {
    if num == 2 {
        return true
    }
    if num < 2 || num % 2 == 0 {
        return false
    }
    for i in 3..<Int(sqrt(Double(num))) {
        if num % i == 0 {
            return false
        }
    }
    return true
}
```swift
// You are given a string representing a sentence,
// the sentence contains some words separated by a space,
// and you have to return a string that contains the words from the original sentence,
// whose lengths are prime numbers,
// the order of the words in the new string should be the same as the original one.
// Example 1:
// Example 2:
// Constraints:
// * 1 <= len(sentence) <= 100
// * sentence contains only letters
// wordsInSentence(sentence: "This is a test") == "is"
// wordsInSentence(sentence: "lets go for swimming") == "go for"
func wordsInSentence(sentence: String) -> String {
    var result = ""
    var words = sentence.components(separatedBy: " ")
    for i in 0..<words.count {
        if isPrime(words[i].count) {
            result += words[i] + " "
        }
    }
    return result.trimmingCharacters(in: .whitespaces)
}

func isPrime(_ num: Int) -> Bool {
    if num == 2 {
        return true
    }
    if num < 2 || num % 2 == 0 {
        return false
    }
    for i in 3..<Int(sqrt(Double(num))) {
        if num % i == 0 {
            return false
        }
    }
    return true
}
<|file_separator|>
var words = sentence.components(separatedBy: " ") // variable 'words' was never mutated; consider changing to 'let' constant
 // Fatal error: Range requires lowerBound <= upperBound

func wordsInSentence(sentence: String) -> String {
    var words = sentence.components(separatedBy: " ")
    var result = ""
    for i in 0..<words.count {
        if isPrime(words[i].count) {
            result += words[i] + " "
        }
    }
    return result
}

func isPrime(_ num: Int) -> Bool {
    if num == 2 {
        return true
    }
    if num < 2 || num % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(num))) {
        if num % i == 0 {
            return false
        }
    }
    return true
}
```swift
// You are given a string representing a sentence,
// the sentence contains some words separated by a space,
// and you have to return a string that contains the words from the original sentence,
// whose lengths are prime numbers,
// the order of the words in the new string should be the same as the original one.
// Example 1:
// Example 2:
// Constraints:
// * 1 <= len(sentence) <= 100
// * sentence contains only letters
// wordsInSentence(sentence: "This is a test") == "is"
// wordsInSentence(sentence: "lets go for swimming") == "go for"
func wordsInSentence(sentence: String) -> String {
    var words = sentence.components(separatedBy: " ")
    var result = ""
    for i in 0..<words.count {
        if isPrime(words[i].count) {
            result += words[i] + " "
        }
    }
    return result
}

func isPrime(_ num: Int) -> Bool {
    if num == 2 {
        return true
    }
    if num < 2 || num % 2 == 0 {
        return false
    }
    for i in 3...Int(sqrt(Double(num))) {
        if num % i == 0 {
            return false
        }
    }
    return true
}
<|file_separator|>
var words = sentence.components(separatedBy: " ") // variable 'words' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func wordsInSentence(sentence: String) -> String {
    // Write your code here
    var result = ""
    var words = sentence.split(separator: " ")
    for i in 0..<words.count {
        if isPrime(words[i].count) {
            result += words[i] + " "
        }
    }
    return String(result.dropLast())
}

func isPrime(_ num: Int) -> Bool {
    if num <= 1 {
        return false
    }
    for i in 2..<num {
        if num % i == 0 {
            return false
        }
    }
    return true
}
```swift
// You are given a string representing a sentence,
// the sentence contains some words separated by a space,
// and you have to return a string that contains the words from the original sentence,
// whose lengths are prime numbers,
// the order of the words in the new string should be the same as the original one.
// Example 1:
// Example 2:
// Constraints:
// * 1 <= len(sentence) <= 100
// * sentence contains only letters
// wordsInSentence(sentence: "This is a test") == "is"
// wordsInSentence(sentence: "lets go for swimming") == "go for"
func wordsInSentence(sentence: String) -> String {
    // Write your code here
    var result = ""
    var words = sentence.split(separator: " ")
    for i in 0..<words.count {
        if isPrime(words[i].count) {
            result += words[i] + " "
        }
    }
    return String(result.dropLast())
}

func isPrime(_ num: Int) -> Bool {
    if num <= 1 {
        return false
    }
    for i in 2..<num {
        if num % i == 0 {
            return false
        }
    }
    return true
}
<|file_separator|>
var words = sentence.split(separator: " ") // variable 'words' was never mutated; consider changing to 'let' constant

func wordsInSentence(sentence: String) -> String {
    var words = sentence.split(separator: " ")
    var result = ""
    for i in 0..<words.count {
        if isPrime(words[i].count) {
            result += words[i] + " "
        }
    }
    return result.trimmingCharacters(in: .whitespaces)
}

func isPrime(_ num: Int) -> Bool {
    if num <= 1 {
        return false
    }
    for i in 2..<num {
        if num % i == 0 {
            return false
        }
    }
    return true
}
```swift
// You are given a string representing a sentence,
// the sentence contains some words separated by a space,
// and you have to return a string that contains the words from the original sentence,
// whose lengths are prime numbers,
// the order of the words in the new string should be the same as the original one.
// Example 1:
// Example 2:
// Constraints:
// * 1 <= len(sentence) <= 100
// * sentence contains only letters
// wordsInSentence(sentence: "This is a test") == "is"
// wordsInSentence(sentence: "lets go for swimming") == "go for"
func wordsInSentence(sentence: String) -> String {
    var words = sentence.split(separator: " ")
    var result = ""
    for i in 0..<words.count {
        if isPrime(words[i].count) {
            result += words[i] + " "
        }
    }
    return result.trimmingCharacters(in: .whitespaces)
}

func isPrime(_ num: Int) -> Bool {
    if num <= 1 {
        return false
    }
    for i in 2..<num {
        if num % i == 0 {
            return false
        }
    }
    return true
}
<|file_separator|>
var words = sentence.split(separator: " ") // variable 'words' was never mutated; consider changing to 'let' constant

func wordsInSentence(sentence: String) -> String {
    // Write your code here
    var result = ""
    var words = sentence.split(separator: " ")
    var prime = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, 509, 521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607, 613, 617, 619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701, 709, 719, 727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811, 821, 823, 827, 829, 839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911, 919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, 997]
    for word in words {
        if prime.contains(word.count) {
            result += word + " "
        }
    }
    return result.trimmingCharacters(in: .whitespaces)
}
```swift
// You are given a string representing a sentence,
// the sentence contains some words separated by a space,
// and you have to return a string that contains the words from the original sentence,
// whose lengths are prime numbers,
// the order of the words in the new string should be the same as the original one.
// Example 1:
// Example 2:
// Constraints:
// * 1 <= len(sentence) <= 100
// * sentence contains only letters
// wordsInSentence(sentence: "This is a test") == "is"
// wordsInSentence(sentence: "lets go for swimming") == "go for"
func wordsInSentence(sentence: String) -> String {
    // Write your code here
    var result = ""
    var words = sentence.split(separator: " ")
    var prime = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, 509, 521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607, 613, 617, 619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701, 709, 719, 727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811, 821, 823, 827, 829, 839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911, 919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, 997]
    for word in words {
        if prime.contains(word.count) {
            result += word + " "
        }
    }
    return result.trimmingCharacters(in: .whitespaces)
}
<|file_separator|>
var words = sentence.split(separator: " ") // variable 'words' was never mutated; consider changing to 'let' constant
var prime = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, 509, 521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607, 613, 617, 619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701, 709, 719, 727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811, 821, 823, 827, 829, 839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911, 919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, 997] // variable 'prime' was never mutated; consider changing to 'let' constant

func wordsInSentence(sentence: String) -> String {
    // Write your code here
    var result = ""
    var words = sentence.split(separator: " ")
    for i in 0..<words.count {
        if isPrime(words[i]) {
            result += words[i] + " "
        }
    }
    return result
}

func isPrime(_ word: String) -> Bool {
    if word.count == 1 {
        return true
    }
    for i in 2..<word.count {
        if word.count % i == 0 {
            return false
        }
    }
    return true
}
```swift
// You are given a string representing a sentence,
// the sentence contains some words separated by a space,
// and you have to return a string that contains the words from the original sentence,
// whose lengths are prime numbers,
// the order of the words in the new string should be the same as the original one.
// Example 1:
// Example 2:
// Constraints:
// * 1 <= len(sentence) <= 100
// * sentence contains only letters
// wordsInSentence(sentence: "This is a test") == "is"
// wordsInSentence(sentence: "lets go for swimming") == "go for"
func wordsInSentence(sentence: String) -> String {
    // Write your code here
    var result = ""
    var words = sentence.split(separator: " ")
    for i in 0..<words.count {
        if isPrime(words[i]) {
            result += words[i] + " "
        }
    }
    return result
}
func isPrime(_ word: String) -> Bool {
    if word.count == 1 {
        return true
    }
    for i in 2..<word.count {
        if word.count % i == 0 {
            return false
        }
    }
    return true
}
<|file_separator|>
if isPrime(words[i]) { // cannot convert value of type 'String.SubSequence' (aka 'Substring') to expected argument type 'String'

func wordsInSentence(sentence: String) -> String {
    let words = sentence.split(separator: " ")
    var result = ""
    for word in words {
        if isPrime(word.count) {
            result += word + " "
        }
    }
    return result.trimmingCharacters(in: .whitespaces)
}

func isPrime(_ num: Int) -> Bool {
    if num <= 1 {
        return false
    }
    for i in 2..<num {
        if num % i == 0 {
            return false
        }
    }
    return true
}
```swift
// You are given a string representing a sentence,
// the sentence contains some words separated by a space,
// and you have to return a string that contains the words from the original sentence,
// whose lengths are prime numbers,
// the order of the words in the new string should be the same as the original one.
// Example 1:
// Example 2:
// Constraints:
// * 1 <= len(sentence) <= 100
// * sentence contains only letters
// wordsInSentence(sentence: "This is a test") == "is"
// wordsInSentence(sentence: "lets go for swimming") == "go for"
func wordsInSentence(sentence: String) -> String {
    let words = sentence.split(separator: " ")
    var result = ""
    for word in words {
        if isPrime(word.count) {
            result += word + " "
        }
    }
    return result.trimmingCharacters(in: .whitespaces)
}

func isPrime(_ num: Int) -> Bool {
    if num <= 1 {
        return false
    }
    for i in 2..<num {
        if num % i == 0 {
            return false
        }
    }
    return true
}
<|file_separator|>

func wordsInSentence(sentence: String) -> String {
    var words = sentence.components(separatedBy: " ")
    var result = ""
    for i in 0..<words.count {
        if isPrime(words[i].count) {
            result += words[i] + " "
        }
    }
    return result.trimmingCharacters(in: .whitespaces)
}

func isPrime(_ num: Int) -> Bool {
    if num <= 1 {
        return false
    }
    for i in 2..<num {
        if num % i == 0 {
            return false
        }
    }
    return true
}
```swift
// You are given a string representing a sentence,
// the sentence contains some words separated by a space,
// and you have to return a string that contains the words from the original sentence,
// whose lengths are prime numbers,
// the order of the words in the new string should be the same as the original one.
// Example 1:
// Example 2:
// Constraints:
// * 1 <= len(sentence) <= 100
// * sentence contains only letters
// wordsInSentence(sentence: "This is a test") == "is"
// wordsInSentence(sentence: "lets go for swimming") == "go for"
func wordsInSentence(sentence: String) -> String {
    var words = sentence.components(separatedBy: " ")
    var result = ""
    for i in 0..<words.count {
        if isPrime(words[i].count) {
            result += words[i] + " "
        }
    }
    return result.trimmingCharacters(in: .whitespaces)
}

func isPrime(_ num: Int) -> Bool {
    if num <= 1 {
        return false
    }
    for i in 2..<num {
        if num % i == 0 {
            return false
        }
    }
    return true
}
<|file_separator|>
var words = sentence.components(separatedBy: " ") // variable 'words' was never mutated; consider changing to 'let' constant

func wordsInSentence(sentence: String) -> String {
    var result = ""
    var words = sentence.split(separator: " ")
    for i in 0..<words.count {
        if isPrime(words[i].count) {
            result += words[i] + " "
        }
    }
    return result.trimmingCharacters(in: .whitespaces)
}

func isPrime(_ num: Int) -> Bool {
    if num <= 1 {
        return false
    }
    for i in 2..<num {
        if num % i == 0 {
            return false
        }
    }
    return true
}
```swift
// You are given a string representing a sentence,
// the sentence contains some words separated by a space,
// and you have to return a string that contains the words from the original sentence,
// whose lengths are prime numbers,
// the order of the words in the new string should be the same as the original one.
// Example 1:
// Example 2:
// Constraints:
// * 1 <= len(sentence) <= 100
// * sentence contains only letters
// wordsInSentence(sentence: "This is a test") == "is"
// wordsInSentence(sentence: "lets go for swimming") == "go for"
func wordsInSentence(sentence: String) -> String {
    var result = ""
    var words = sentence.split(separator: " ")
    for i in 0..<words.count {
        if isPrime(words[i].count) {
            result += words[i] + " "
        }
    }
    return result.trimmingCharacters(in: .whitespaces)
}

func isPrime(_ num: Int) -> Bool {
    if num <= 1 {
        return false
    }
    for i in 2..<num {
        if num % i == 0 {
            return false
        }
    }
    return true
}
<|file_separator|>
var words = sentence.split(separator: " ") // variable 'words' was never mutated; consider changing to 'let' constant

```swift
// Your task is to implement a function that will simplify the expression
// x * n. The function returns true if x * n evaluates to a whole number and false
// otherwise. Both x and n, are string representation of a fraction, and have the following format,
// <numerator>/<denominator> where both numerator and denominator are positive whole numbers.
// You can assume that x, and n are valid fractions, and do not have zero as denominator.
// simplify(x: "1/5", n: "5/1") == true
// simplify(x: "1/6", n: "2/1") == false
// simplify(x: "7/10", n: "10/2") == false
func simplify(x: String, n: String) -> Bool {
    let x = x.split(separator: "/").map { Int($0)! }
    let n = n.split(separator: "/").map { Int($0)! }
    let x1 = x[0]
    let x2 = x[1]
    let n1 = n[0]
    let n2 = n[1]
    if x1 == 0 || n1 == 0 {
        return false
    }
    if x2 == 0 || n2 == 0 {
        return false
    }
    if x1 == n1 {
        return true
    }
    if x2 == n2 {
        return true
    }
    if x1 == 0 {
        return false
    }
    if n1 == 0 {
        return false
    }
    if x1 == n2 {
        return true
    }
    if x2 == n1 {
        return true
    }
    if x1 == 1 {
        return true
    }
    if n1 == 1 {
        return true
    }
    if x2 == 1 {
        return true
    }
    if n2 == 1 {
        return true
    }
    if x1 == n2 {
        return true
    }
    if x2 == n1 {
        return true
    }
    if x1 == 1 {
        return true
    }
    if n1 == 1 {
        return true
    }
    if x2 == 1 {
        return true
    }
    if n2 == 1 {
        return true
    }
    if x1 == 0 {
        return false
    }
    if n1 == 0 {
        return false
    }
    if x2 == 0 {
        return false
    }
    if n2 == 0 {
        return false
    }
    if x1 == n2 {
        return true
    }
    if x2 == n1 {
        return true
    }
    if x1 == 1 {
        return true
    }
    if n1 == 1 {
        return true
    }
    if x2 == 1 {
        return true
    }
    if n2 == 1 {
        return true
    }
    if x1 == 0 {
        return false
    }
    if n1 == 0 {
        return false
    }
    if x2 == 0 {
        return false
    }
    if n2 == 0 {
        return false
    }
    if x1 == n2 {
        return true
    }
    if x2 == n1 {
        return true
    }
    if x1 == 1 {
        return true
    }
    if n1 == 1 {
        return true
    }
    if x2 == 1 {
        return true
    }
    if n2 == 1 {
        return true
    }
    if x1 == 0 {
        return false
    }
    if n1 == 0 {
        return false
    }
    if x2 == 0 {
        return false
    }
    if n2 == 0 {
        return false
    }
    if x1 == n2 {
        return true
    }
    if x2 == n1 {
        return true
    }
    if x1 == 1 {
        return true
    }
    if n1 == 1 {
        return true
    }
    if x2 == 1 {
        return true
    }
    if n2 == 1 {
        return true
    }
    if x1 == 0 {
        return false
    }
    if n1 == 0 {
        return false
    }
    if x2 == 0 {
        return false
    }
    if n2 == 0 {
        return false
    }
    if x1 == n2 {
        return true
    }
    if x2 == n1 {
        return true
    }
    if x1 == 1 {
        return true
    }
    if n1 == 1 {
        return true
    }
    if x2 == 1 {
        return true
    }
    if n2 == 1 {
        return true
    }
    if x
XCTAssertTrue(simplify(x: "1/5", n: "5/1") == true) // cannot find 'simplify' in scope
XCTAssertTrue(simplify(x: "1/6", n: "2/1") == false) // cannot find 'simplify' in scope
XCTAssertTrue(simplify(x: "5/1", n: "3/1") == true) // cannot find 'simplify' in scope
XCTAssertTrue(simplify(x: "7/10", n: "10/2") == false) // cannot find 'simplify' in scope
XCTAssertTrue(simplify(x: "2/10", n: "50/10") == true) // cannot find 'simplify' in scope
XCTAssertTrue(simplify(x: "7/2", n: "4/2") == true) // cannot find 'simplify' in scope
XCTAssertTrue(simplify(x: "11/6", n: "6/1") == true) // cannot find 'simplify' in scope
XCTAssertTrue(simplify(x: "2/3", n: "5/2") == false) // cannot find 'simplify' in scope
XCTAssertTrue(simplify(x: "5/2", n: "3/5") == false) // cannot find 'simplify' in scope
XCTAssertTrue(simplify(x: "2/4", n: "8/4") == true) // cannot find 'simplify' in scope
XCTAssertTrue(simplify(x: "2/4", n: "4/2") == true) // cannot find 'simplify' in scope
XCTAssertTrue(simplify(x: "1/5", n: "5/1") == true) // cannot find 'simplify' in scope
XCTAssertTrue(simplify(x: "1/5", n: "1/5") == false) // cannot find 'simplify' in scope

func simplify(x: String, n: String) -> Bool {
    let x = x.split(separator: "/").map { Int($0) }
    let n = n.split(separator: "/").map { Int($0) }
    let x1 = x[0]
    let x2 = x[1]
    let n1 = n[0]
    let n2 = n[1]
    if x2 == 0 || n2 == 0 {
        return false
    }
    if x1 == 0 {
        return true
    }
    if n1 == 0 {
        return false
    }
    if x2 == 1 {
        return true
    }
    if n2 == 1 {
        return true
    }
    return false
}
```swift
// Your task is to implement a function that will simplify the expression
// x * n. The function returns true if x * n evaluates to a whole number and false
// otherwise. Both x and n, are string representation of a fraction, and have the following format,
// <numerator>/<denominator> where both numerator and denominator are positive whole numbers.
// You can assume that x, and n are valid fractions, and do not have zero as denominator.
// simplify(x: "1/5", n: "5/1") == true
// simplify(x: "1/6", n: "2/1") == false
// simplify(x: "7/10", n: "10/2") == false
func simplify(x: String, n: String) -> Bool {
    let x = x.split(separator: "/").map { Int($0) }
    let n = n.split(separator: "/").map { Int($0) }
    let x1 = x[0]
    let x2 = x[1]
    let n1 = n[0]
    let n2 = n[1]
    if x2 == 0 || n2 == 0 {
        return false
    }
    if x1 == 0 {
        return true
    }
    if n1 == 0 {
        return false
    }
    if x2 == 1 {
        return true
    }
    if n2 == 1 {
        return true
    }
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func simplify(x: String, n: String) -> Bool {
    let x = x.components(separatedBy: "/").map { Int($0) }
    let n = n.components(separatedBy: "/").map { Int($0) }
    
    if x[1] == 0 || n[1] == 0 {
        return false
    }
    
    let x1 = x[0] * n[1]
    let n1 = x[1] * n[0]
    
    return x1 == n1
}
```swift
// Your task is to implement a function that will simplify the expression
// x * n. The function returns true if x * n evaluates to a whole number and false
// otherwise. Both x and n, are string representation of a fraction, and have the following format,
// <numerator>/<denominator> where both numerator and denominator are positive whole numbers.
// You can assume that x, and n are valid fractions, and do not have zero as denominator.
// simplify(x: "1/5", n: "5/1") == true
// simplify(x: "1/6", n: "2/1") == false
// simplify(x: "7/10", n: "10/2") == false
func simplify(x: String, n: String) -> Bool {
    let x = x.components(separatedBy: "/").map { Int($0) }
    let n = n.components(separatedBy: "/").map { Int($0) }
    
    if x[1] == 0 || n[1] == 0 {
        return false
    }
    
    let x1 = x[0] * n[1]
    let n1 = x[1] * n[0]
    
    return x1 == n1
}
<|file_separator|>
let x1 = x[0] * n[1] // value of optional type 'Int?' must be unwrapped to a value of type 'Int'
let x1 = x[0] * n[1] // value of optional type 'Int?' must be unwrapped to a value of type 'Int'
let n1 = x[1] * n[0] // value of optional type 'Int?' must be unwrapped to a value of type 'Int'
let n1 = x[1] * n[0] // value of optional type 'Int?' must be unwrapped to a value of type 'Int'

func simplify(x: String, n: String) -> Bool {
    let x = x.split(separator: "/").map { Int($0) }
    let n = n.split(separator: "/").map { Int($0) }
    let x1 = x[0]
    let x2 = x[1]
    let n1 = n[0]
    let n2 = n[1]
    if x2 == 0 || n2 == 0 {
        return false
    }
    let x3 = x1 * n2
    let n3 = x2 * n1
    if x3 == n3 {
        return true
    }
    return false
}
```swift
// Your task is to implement a function that will simplify the expression
// x * n. The function returns true if x * n evaluates to a whole number and false
// otherwise. Both x and n, are string representation of a fraction, and have the following format,
// <numerator>/<denominator> where both numerator and denominator are positive whole numbers.
// You can assume that x, and n are valid fractions, and do not have zero as denominator.
// simplify(x: "1/5", n: "5/1") == true
// simplify(x: "1/6", n: "2/1") == false
// simplify(x: "7/10", n: "10/2") == false
func simplify(x: String, n: String) -> Bool {
    let x = x.split(separator: "/").map { Int($0) }
    let n = n.split(separator: "/").map { Int($0) }
    let x1 = x[0]
    let x2 = x[1]
    let n1 = n[0]
    let n2 = n[1]
    if x2 == 0 || n2 == 0 {
        return false
    }
    let x3 = x1 * n2
    let n3 = x2 * n1
    if x3 == n3 {
        return true
    }
    return false
}
<|file_separator|>
let x3 = x1 * n2 // binary operator '*' cannot be applied to two 'Int?' operands
let n3 = x2 * n1 // binary operator '*' cannot be applied to two 'Int?' operands

func simplify(x: String, n: String) -> Bool {
    let x = x.split(separator: "/")
    let n = n.split(separator: "/")
    let x1 = Int(x[0])!
    let x2 = Int(x[1])!
    let n1 = Int(n[0])!
    let n2 = Int(n[1])!
    if x1 * n2 == x2 * n1 {
        return true
    }
    return false
}
```swift
// Your task is to implement a function that will simplify the expression
// x * n. The function returns true if x * n evaluates to a whole number and false
// otherwise. Both x and n, are string representation of a fraction, and have the following format,
// <numerator>/<denominator> where both numerator and denominator are positive whole numbers.
// You can assume that x, and n are valid fractions, and do not have zero as denominator.
// simplify(x: "1/5", n: "5/1") == true
// simplify(x: "1/6", n: "2/1") == false
// simplify(x: "7/10", n: "10/2") == false
func simplify(x: String, n: String) -> Bool {
    let x = x.split(separator: "/")
    let n = n.split(separator: "/")
    let x1 = Int(x[0])!
    let x2 = Int(x[1])!
    let n1 = Int(n[0])!
    let n2 = Int(n[1])!
    if x1 * n2 == x2 * n1 {
        return true
    }
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func simplify(x: String, n: String) -> Bool {
    let x = x.split(separator: "/").map { Int($0) }
    let n = n.split(separator: "/").map { Int($0) }
    let x1 = x[0]
    let x2 = x[1]
    let n1 = n[0]
    let n2 = n[1]
    let x3 = x1 * n2
    let x4 = x2 * n1
    let x5 = x3 + x4
    let x6 = x5 / x2
    if x6 == 1 {
        return true
    } else {
        return false
    }
}
```swift
// Your task is to implement a function that will simplify the expression
// x * n. The function returns true if x * n evaluates to a whole number and false
// otherwise. Both x and n, are string representation of a fraction, and have the following format,
// <numerator>/<denominator> where both numerator and denominator are positive whole numbers.
// You can assume that x, and n are valid fractions, and do not have zero as denominator.
// simplify(x: "1/5", n: "5/1") == true
// simplify(x: "1/6", n: "2/1") == false
// simplify(x: "7/10", n: "10/2") == false
func simplify(x: String, n: String) -> Bool {
    let x = x.split(separator: "/").map { Int($0) }
    let n = n.split(separator: "/").map { Int($0) }
    let x1 = x[0]
    let x2 = x[1]
    let n1 = n[0]
    let n2 = n[1]
    let x3 = x1 * n2
    let x4 = x2 * n1
    let x5 = x3 + x4
    let x6 = x5 / x2
    if x6 == 1 {
        return true
    } else {
        return false
    }
}
<|file_separator|>
let x3 = x1 * n2 // binary operator '*' cannot be applied to two 'Int?' operands
let x4 = x2 * n1 // binary operator '*' cannot be applied to two 'Int?' operands

func simplify(x: String, n: String) -> Bool {
    let x = x.components(separatedBy: "/").map { Int($0) }
    let n = n.components(separatedBy: "/").map { Int($0) }
    
    if x[1] == 0 || n[1] == 0 {
        return false
    }
    
    let result = x[0] * n[0] / x[1] / n[1]
    
    return result == Int(result)
}
```swift
// Your task is to implement a function that will simplify the expression
// x * n. The function returns true if x * n evaluates to a whole number and false
// otherwise. Both x and n, are string representation of a fraction, and have the following format,
// <numerator>/<denominator> where both numerator and denominator are positive whole numbers.
// You can assume that x, and n are valid fractions, and do not have zero as denominator.
// simplify(x: "1/5", n: "5/1") == true
// simplify(x: "1/6", n: "2/1") == false
// simplify(x: "7/10", n: "10/2") == false
func simplify(x: String, n: String) -> Bool {
    let x = x.components(separatedBy: "/").map { Int($0) }
    let n = n.components(separatedBy: "/").map { Int($0) }
    
    if x[1] == 0 || n[1] == 0 {
        return false
    }
    
    let result = x[0] * n[0] / x[1] / n[1]
    
    return result == Int(result)
}
<|file_separator|>
let result = x[0] * n[0] / x[1] / n[1] // value of optional type 'Int?' must be unwrapped to a value of type 'Int'
let result = x[0] * n[0] / x[1] / n[1] // value of optional type 'Int?' must be unwrapped to a value of type 'Int'
let result = x[0] * n[0] / x[1] / n[1] // value of optional type 'Int?' must be unwrapped to a value of type 'Int'
let result = x[0] * n[0] / x[1] / n[1] // value of optional type 'Int?' must be unwrapped to a value of type 'Int'

func simplify(x: String, n: String) -> Bool {
    let x = x.split(separator: "/").map { Int($0) }
    let n = n.split(separator: "/").map { Int($0) }
    let x1 = x[0]
    let x2 = x[1]
    let n1 = n[0]
    let n2 = n[1]
    let x3 = x1 * n2
    let x4 = x2 * n1
    let x5 = x3 + x4
    let x6 = x5 / x2
    if x6 == 1 {
        return true
    } else {
        return false
    }
}
```swift
// Your task is to implement a function that will simplify the expression
// x * n. The function returns true if x * n evaluates to a whole number and false
// otherwise. Both x and n, are string representation of a fraction, and have the following format,
// <numerator>/<denominator> where both numerator and denominator are positive whole numbers.
// You can assume that x, and n are valid fractions, and do not have zero as denominator.
// simplify(x: "1/5", n: "5/1") == true
// simplify(x: "1/6", n: "2/1") == false
// simplify(x: "7/10", n: "10/2") == false
func simplify(x: String, n: String) -> Bool {
    let x = x.split(separator: "/").map { Int($0) }
    let n = n.split(separator: "/").map { Int($0) }
    let x1 = x[0]
    let x2 = x[1]
    let n1 = n[0]
    let n2 = n[1]
    let x3 = x1 * n2
    let x4 = x2 * n1
    let x5 = x3 + x4
    let x6 = x5 / x2
    if x6 == 1 {
        return true
    } else {
        return false
    }
}
<|file_separator|>
let x3 = x1 * n2 // binary operator '*' cannot be applied to two 'Int?' operands
let x4 = x2 * n1 // binary operator '*' cannot be applied to two 'Int?' operands

func simplify(x: String, n: String) -> Bool {
    let x = x.split(separator: "/").map { Int($0) }
    let n = n.split(separator: "/").map { Int($0) }
    
    let x1 = x[0]
    let x2 = x[1]
    let n1 = n[0]
    let n2 = n[1]
    
    if x2 == 0 || n2 == 0 {
        return false
    }
    
    let gcd = gcd(x1, n1)
    
    return (x1 * n1) / gcd == (n1 * x1) / gcd
}

func gcd(_ x: Int, _ y: Int) -> Int {
    if y == 0 {
        return x
    }
    
    return gcd(y, x % y)
}
```swift
// Your task is to implement a function that will simplify the expression
// x * n. The function returns true if x * n evaluates to a whole number and false
// otherwise. Both x and n, are string representation of a fraction, and have the following format,
// <numerator>/<denominator> where both numerator and denominator are positive whole numbers.
// You can assume that x, and n are valid fractions, and do not have zero as denominator.
// simplify(x: "1/5", n: "5/1") == true
// simplify(x: "1/6", n: "2/1") == false
// simplify(x: "7/10", n: "10/2") == false
func simplify(x: String, n: String) -> Bool {
    let x = x.split(separator: "/").map { Int($0) }
    let n = n.split(separator: "/").map { Int($0) }
    
    let x1 = x[0]
    let x2 = x[1]
    let n1 = n[0]
    let n2 = n[1]
    
    if x2 == 0 || n2 == 0 {
        return false
    }
    
    let gcd = gcd(x1, n1)
    
    return (x1 * n1) / gcd == (n1 * x1) / gcd
}

func gcd(_ x: Int, _ y: Int) -> Int {
    if y == 0 {
        return x
    }
    
    return gcd(y, x % y)
}
<|file_separator|>
let gcd = gcd(x1, n1) // value of optional type 'Int?' must be unwrapped to a value of type 'Int'
let gcd = gcd(x1, n1) // value of optional type 'Int?' must be unwrapped to a value of type 'Int'
return (x1 * n1) / gcd == (n1 * x1) / gcd // the compiler is unable to type-check this expression in reasonable time; try breaking up the expression into distinct sub-expressions

func simplify(x: String, n: String) -> Bool {
    let x = x.split(separator: "/").map { Int($0) }
    let n = n.split(separator: "/").map { Int($0) }
    
    let x1 = x[0]
    let x2 = x[1]
    let n1 = n[0]
    let n2 = n[1]
    
    if x2 == 0 || n2 == 0 {
        return false
    }
    
    let gcd = gcd(x1, n1)
    
    return (x1 * n1) / gcd == (n1 * x1) / gcd
}

func gcd(_ x: Int, _ y: Int) -> Int {
    if y == 0 {
        return x
    }
    
    return gcd(y, x % y)
}
```swift
// Your task is to implement a function that will simplify the expression
// x * n. The function returns true if x * n evaluates to a whole number and false
// otherwise. Both x and n, are string representation of a fraction, and have the following format,
// <numerator>/<denominator> where both numerator and denominator are positive whole numbers.
// You can assume that x, and n are valid fractions, and do not have zero as denominator.
// simplify(x: "1/5", n: "5/1") == true
// simplify(x: "1/6", n: "2/1") == false
// simplify(x: "7/10", n: "10/2") == false
func simplify(x: String, n: String) -> Bool {
    let x = x.split(separator: "/").map { Int($0) }
    let n = n.split(separator: "/").map { Int($0) }
    
    let x1 = x[0]
    let x2 = x[1]
    let n1 = n[0]
    let n2 = n[1]
    
    if x2 == 0 || n2 == 0 {
        return false
    }
    
    let gcd = gcd(x1, n1)
    
    return (x1 * n1) / gcd == (n1 * x1) / gcd
}

func gcd(_ x: Int, _ y: Int) -> Int {
    if y == 0 {
        return x
    }
    
    return gcd(y, x % y)
}
<|file_separator|>
let gcd = gcd(x1, n1) // value of optional type 'Int?' must be unwrapped to a value of type 'Int'
let gcd = gcd(x1, n1) // value of optional type 'Int?' must be unwrapped to a value of type 'Int'
return (x1 * n1) / gcd == (n1 * x1) / gcd // the compiler is unable to type-check this expression in reasonable time; try breaking up the expression into distinct sub-expressions

func orderByPoints(nums: [Int]) -> [Int] {
    // your code here
}
```swift
// Write a function which sorts the given array of integers
// in ascending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderByPoints(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderByPoints(nums: [] as [Int]) == [] as [Int]
func orderByPoints(nums: [Int]) -> [Int] {
    // your code here
}
<|file_separator|>
} // missing return in global function expected to return '[Int]'

func orderByPoints(nums: [Int]) -> [Int] {
    var nums = nums
    nums.sort {
        (a, b) -> Bool in
        let aSum = a.digits().reduce(0, +)
        let bSum = b.digits().reduce(0, +)
        if aSum == bSum {
            return a < b
        }
        return aSum < bSum
    }
    return nums
}

func countChar(str: String, char: Character) -> Int {
    return str.filter { $0 == char }.count
}

func countSubstring(str: String, sub: String) -> Int {
    return str.filter { $0 == sub }.count
}

func countSubstringIgnoreCase(str: String, sub: String) -> Int {
    return str.filter { $0 == sub }.count
}

func countSubstringIgnoreOrder(str: String, sub: String) -> Int {
    return str.filter { $0 == sub }.count
}

func countSubstringIgnoreOrderAndLength(str: String, sub: String) -> Int {
    return str.filter { $0 == sub }.count
}

func countSubstringIgnoreOrderAndLengthIgnoreCase(str: String, sub: String) -> Int {
    return str.filter { $0 == sub }.count
}

func countSubstringIgnoreOrderAndLengthIgnoreOrder(str: String, sub: String) -> Int {
    return str.filter { $0 == sub }.count
}

func countSubstringIgnoreOrderAndLengthIgnoreOrderAndLength(str: String, sub: String) -> Int {
    return str.filter { $0 == sub }.count
}
```swift
// Write a function which sorts the given array of integers
// in ascending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderByPoints(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderByPoints(nums: [] as [Int]) == [] as [Int]
func orderByPoints(nums: [Int]) -> [Int] {
    var nums = nums
    nums.sort {
        (a, b) -> Bool in
        let aSum = a.digits().reduce(0, +)
        let bSum = b.digits().reduce(0, +)
        if aSum == bSum {
            return a < b
        }
        return aSum < bSum
    }
    return nums
}

// Write a function which returns the number of occurrences of a given character in a given string.
// For example:
// countChar("Hello", 'l') == 2
// countChar("Hello", 'x') == 0
func countChar(str: String, char: Character) -> Int {
    return str.filter { $0 == char }.count
}

// Write a function which returns the number of occurrences of a given substring in a given string.
// For example:
// countSubstring("Hello", "ll") == 2
// countSubstring("Hello", "x") == 0
func countSubstring(str: String, sub: String) -> Int {
    return str.filter { $0 == sub }.count
}

// Write a function which returns the number of occurrences of a given substring in a given string,
// ignoring the case of characters.
// For example:
// countSubstringIgnoreCase("Hello", "ll") == 2
// countSubstringIgnoreCase("Hello", "x") == 0
func countSubstringIgnoreCase(str: String, sub: String) -> Int {
    return str.filter { $0 == sub }.count
}

// Write a function which returns the number of occurrences of a given substring in a given string,
// ignoring the case of characters and the order of characters.
// For example:
// countSubstringIgnoreOrder("Hello", "ll") == 2
// countSubstringIgnoreOrder("Hello", "x") == 0
func countSubstringIgnoreOrder(str: String, sub: String) -> Int {
    return str.filter { $0 == sub }.count
}

// Write a function which returns the number of occurrences of a given substring in a given string,
// ignoring the case of characters, the order of characters and the length of substring.
// For example:
// countSubstringIgnoreOrderAndLength("Hello", "ll") == 2
// countSubstringIgnoreOrderAndLength("Hello", "x") == 0
func countSubstringIgnoreOrderAndLength(str: String, sub: String) -> Int {
    return str.filter { $0 == sub }.count
}

// Write a function which returns the number of occurrences of a given substring in a given string,
// ignoring the case of characters, the order of characters and the length of substring,
// and ignoring the case of the given substring.
// For example:
// countSubstringIgnoreOrderAndLengthIgnoreCase("Hello", "ll") == 2
// countSubstringIgnoreOrderAndLengthIgnoreCase("Hello", "x") == 0
func countSubstringIgnoreOrderAndLengthIgnoreCase(str: String, sub: String) -> Int {
    return str.filter { $0 == sub }.count
}

// Write a function which returns the number of occurrences of a given substring in a given string,
// ignoring the case of characters, the order of characters and the length of substring,
// and ignoring the case of the given substring and the order of characters.
// For example:
// countSubstringIgnoreOrderAndLengthIgnoreOrder("Hello", "ll") == 2
// countSubstringIgnoreOrderAndLengthIgnoreOrder("Hello", "x") == 0
func countSubstringIgnoreOrderAndLengthIgnoreOrder(str: String, sub: String) -> Int {
    return str.filter { $0 == sub }.count
}

// Write a function which returns the number of occurrences of a given substring in a given string,
// ignoring the case of characters, the order of characters and the length of substring,
// and ignoring the case of the given substring, the order of characters and the length of substring.
// For example:
// countSubstringIgnoreOrderAndLengthIgnoreOrderAndLength("Hello", "ll") == 2
// countSubstringIgnoreOrderAndLengthIgnoreOrderAndLength("Hello", "x") == 0
func countSubstringIgnoreOrderAndLengthIgnoreOrderAndLength(str: String, sub: String) -> Int {
    return str.filter { $0 == sub }.count
}

// Write a function which returns the number of occurrences of a given substring in a given string,
// ignoring the case of characters, the order of characters and the length of substring,
// and ignoring the case of the given substring, the order of characters and the length of substring,
let aSum = a.digits().reduce(0, +) // value of type 'Int' has no member 'digits'
return str.filter { $0 == sub }.count // binary operator '==' cannot be applied to operands of type 'String.Element' (aka 'Character') and 'String'
return str.filter { $0 == sub }.count // binary operator '==' cannot be applied to operands of type 'String.Element' (aka 'Character') and 'String'
return str.filter { $0 == sub }.count // binary operator '==' cannot be applied to operands of type 'String.Element' (aka 'Character') and 'String'
return str.filter { $0 == sub }.count // binary operator '==' cannot be applied to operands of type 'String.Element' (aka 'Character') and 'String'
return str.filter { $0 == sub }.count // binary operator '==' cannot be applied to operands of type 'String.Element' (aka 'Character') and 'String'
return str.filter { $0 == sub }.count // binary operator '==' cannot be applied to operands of type 'String.Element' (aka 'Character') and 'String'
return str.filter { $0 == sub }.count // binary operator '==' cannot be applied to operands of type 'String.Element' (aka 'Character') and 'String'

func orderByPoints(nums: [Int]) -> [Int] {
    // your code here
}
```swift
// Write a function which sorts the given array of integers
// in ascending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderByPoints(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderByPoints(nums: [] as [Int]) == [] as [Int]
func orderByPoints(nums: [Int]) -> [Int] {
    // your code here
}
<|file_separator|>
} // missing return in global function expected to return '[Int]'

func orderByPoints(nums: [Int]) -> [Int] {
    return nums.sorted {
        (a, b) -> Bool in
        let aSum = a.digits().sum()
        let bSum = b.digits().sum()
        if aSum == bSum {
            return a < b
        }
        return aSum < bSum
    }
}

func sumDigits(n: Int) -> Int {
    return n.digits().sum()
}

extension Int {
    func digits() -> [Int] {
        return String(self).digits()
    }
}

extension String {
    func digits() -> [Int] {
        return self.compactMap { Int(String($0)) }
    }
}

extension Array where Element == Int {
    func sum() -> Int {
        return self.reduce(0, +)
    }
}
```swift
// Write a function which sorts the given array of integers
// in ascending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderByPoints(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderByPoints(nums: [] as [Int]) == [] as [Int]
func orderByPoints(nums: [Int]) -> [Int] {
    return nums.sorted {
        (a, b) -> Bool in
        let aSum = a.digits().sum()
        let bSum = b.digits().sum()
        if aSum == bSum {
            return a < b
        }
        return aSum < bSum
    }
}

// Write a function which returns the sum of all the digits in the given integer.
// For example:
// sumDigits(12345) == 15
// sumDigits(123456789) == 45
func sumDigits(n: Int) -> Int {
    return n.digits().sum()
}

// Write a function which returns the sum of all the digits in the given integer.
// For example:
// sumDigits(12345) == 15
// sumDigits(123456789) == 45
extension Int {
    func digits() -> [Int] {
        return String(self).digits()
    }
}

extension String {
    func digits() -> [Int] {
        return self.compactMap { Int(String($0)) }
    }
}

extension Array where Element == Int {
    func sum() -> Int {
        return self.reduce(0, +)
    }
}
<|file_separator|>
 // XCTAssertTrue failed

func orderByPoints(nums: [Int]) -> [Int] {
    // your code here
}
```swift
// Write a function which sorts the given array of integers
// in ascending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderByPoints(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderByPoints(nums: [] as [Int]) == [] as [Int]
func orderByPoints(nums: [Int]) -> [Int] {
    // your code here
}
<|file_separator|>
} // missing return in global function expected to return '[Int]'

func orderByPoints(nums: [Int]) -> [Int] {
    // your code here
}

func sum(nums: [Int]) -> Int {
    // your code here
}

func orderBySum(nums: [Int]) -> [Int] {
    // your code here
}
```swift
// Write a function which sorts the given array of integers
// in ascending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderByPoints(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderByPoints(nums: [] as [Int]) == [] as [Int]
func orderByPoints(nums: [Int]) -> [Int] {
    // your code here
}

// Write a function which returns the sum of the given array of integers.
// For example:
// sum(nums: [1, 2, 3, 4, 5]) == 15
// sum(nums: [] as [Int]) == 0
func sum(nums: [Int]) -> Int {
    // your code here
}

// Write a function which returns the sum of the given array of integers
// in ascending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderBySum(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderBySum(nums: [] as [Int]) == [] as [Int]
func orderBySum(nums: [Int]) -> [Int] {
    // your code here
}

// Write a function which returns the sum of the given array of integers
// in descending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderBySum(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderBySum(nums: [] as [Int]) == [] as [Int]
func orderBySum(nums: [Int]) -> [Int] {
    // your code here
}

// Write a function which returns the sum of the given array of integers
// in ascending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderBySum(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderBySum(nums: [] as [Int]) == [] as [Int]
func orderBySum(nums: [Int]) -> [Int] {
    // your code here
}

// Write a function which returns the sum of the given array of integers
// in descending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderBySum(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderBySum(nums: [] as [Int]) == [] as [Int]
func orderBySum(nums: [Int]) -> [Int] {
    // your code here
}

// Write a function which returns the sum of the given array of integers
// in ascending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderBySum(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderBySum(nums: [] as [Int]) == [] as [Int]
func orderBySum(nums: [Int]) -> [Int] {
    // your code here
}

// Write a function which returns the sum of the given array of integers
// in descending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderBySum(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderBySum(nums: [] as [Int]) == [] as [Int]
func orderBySum(nums: [Int]) -> [Int] {
    // your code here
}

// Write a function which returns the sum of the given array of integers
// in ascending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example
} // missing return in global function expected to return '[Int]'
} // missing return in global function expected to return 'Int'
} // missing return in global function expected to return '[Int]'

func orderByPoints(nums: [Int]) -> [Int] {
    // your code here
}
```swift
// Write a function which sorts the given array of integers
// in ascending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderByPoints(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderByPoints(nums: [] as [Int]) == [] as [Int]
func orderByPoints(nums: [Int]) -> [Int] {
    // your code here
}
<|file_separator|>
} // missing return in global function expected to return '[Int]'

func orderByPoints(nums: [Int]) -> [Int] {
    // your code here
}
```swift
// Write a function which sorts the given array of integers
// in ascending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderByPoints(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderByPoints(nums: [] as [Int]) == [] as [Int]
func orderByPoints(nums: [Int]) -> [Int] {
    // your code here
}
<|file_separator|>
} // missing return in global function expected to return '[Int]'

func orderByPoints(nums: [Int]) -> [Int] {
    return nums.sorted(by: {
        (a, b) -> Bool in
        let aSum = a.digits().reduce(0, +)
        let bSum = b.digits().reduce(0, +)
        if aSum == bSum {
            return a < b
        }
        return aSum < bSum
    })
}

func sum(nums: [Int]) -> Int {
    return nums.reduce(0, +)
}
```swift
// Write a function which sorts the given array of integers
// in ascending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderByPoints(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderByPoints(nums: [] as [Int]) == [] as [Int]
func orderByPoints(nums: [Int]) -> [Int] {
    return nums.sorted(by: {
        (a, b) -> Bool in
        let aSum = a.digits().reduce(0, +)
        let bSum = b.digits().reduce(0, +)
        if aSum == bSum {
            return a < b
        }
        return aSum < bSum
    })
}

// Write a function which returns the sum of the given array of integers.
// For example:
// sum(nums: [1, 2, 3, 4, 5]) == 15
// sum(nums: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 55
func sum(nums: [Int]) -> Int {
    return nums.reduce(0, +)
}

// Write a function which returns the sum of the given array of integers
// in ascending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderByPoints(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderByPoints(nums: [] as [Int]) == [] as [Int]
func orderByPoints(nums: [Int]) -> [Int] {
    return nums.sorted(by: {
        (a, b) -> Bool in
        let aSum = a.digits().reduce(0, +)
        let bSum = b.digits().reduce(0, +)
        if aSum == bSum {
            return a < b
        }
        return aSum < bSum
    })
}

// Write a function which returns the sum of the given array of integers
// in ascending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderByPoints(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderByPoints(nums: [] as [Int]) == [] as [Int]
func orderByPoints(nums: [Int]) -> [Int] {
    return nums.sorted(by: {
        (a, b) -> Bool in
        let aSum = a.digits().reduce(0, +)
        let bSum = b.digits().reduce(0, +)
        if aSum == bSum {
            return a < b
        }
        return aSum < bSum
    })
}

// Write a function which returns the sum of the given array of integers
// in ascending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderByPoints(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderByPoints(nums: [] as [Int]) == [] as [Int]
func orderByPoints(nums: [Int]) -> [Int] {
    return nums.sorted(by: {
        (a, b) -> Bool in
        let aSum = a.digits().reduce(0, +)
        let bSum = b.digits().reduce(0, +)
        if aSum == bSum {
            return a < b
        }
        return aSum < bSum
    })
}

// Write a function which returns the sum of the given array of integers
// in ascending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderByPoints(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderByPoints(nums: [] as [Int]) == [] as [Int]
func orderByPoints(nums: [Int]) -> [Int] {
    return nums.sorted(by: {
        (a, b) -> Bool in
        let aSum = a.
let aSum = a.digits().reduce(0, +) // value of type 'Int' has no member 'digits'

func orderByPoints(nums: [Int]) -> [Int] {
    var result = [Int]()
    var nums = nums
    while nums.count > 0 {
        var min = Int.max
        var index = -1
        for i in 0..<nums.count {
            var sum = 0
            var num = nums[i]
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum < min {
                min = sum
                index = i
            } else if sum == min {
                if i < index {
                    index = i
                }
            }
        }
        result.append(nums[index])
        nums.remove(at: index)
    }
    return result
}
```swift
// Write a function which sorts the given array of integers
// in ascending order according to the sum of their digits.
// Note: if there are several items with similar sum of their digits,
// order them based on their index in original array.
// For example:
// orderByPoints(nums: [1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11]
// orderByPoints(nums: [] as [Int]) == [] as [Int]
func orderByPoints(nums: [Int]) -> [Int] {
    var result = [Int]()
    var nums = nums
    while nums.count > 0 {
        var min = Int.max
        var index = -1
        for i in 0..<nums.count {
            var sum = 0
            var num = nums[i]
            while num > 0 {
                sum += num % 10
                num /= 10
            }
            if sum < min {
                min = sum
                index = i
            } else if sum == min {
                if i < index {
                    index = i
                }
            }
        }
        result.append(nums[index])
        nums.remove(at: index)
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 && (num % 2 == 1) {
            count += 1
        }
    }
    return count
}

func countVowels(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            count += 1
        }
    }
    return count
}

func countWords(str: String) -> Int {
    var count = 0
    for char in str {
        if char == " " {
            count += 1
        }
    }
    return count + 1
}

func countWordsLongerThan5(str: String) -> Int {
    var count = 0
    for word in str.split(separator: " ") {
        if word.count > 5 {
            count += 1
        }
    }
    return count
}
```swift
// Write a function that takes an array of numbers as input and returns 
// the number of elements in the array that are greater than 10 and both 
// first and last digits of a number are odd (1, 3, 5, 7, 9).
// For example:
// specialFilter(nums: [15, -73, 14, -15]) == 1
// specialFilter(nums: [33, -2, -3, 45, 21, 109]) == 2
func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 && (num % 2 == 1) {
            count += 1
        }
    }
    return count
}
// Write a function that takes a string as input and returns the 
// number of vowels in the string.
// For example:
// countVowels("hello") == 2
// countVowels("aeiou") == 5
func countVowels(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            count += 1
        }
    }
    return count
}
// Write a function that takes a string as input and returns the 
// number of words in the string.
// For example:
// countWords("hello world") == 2
// countWords("hello world!") == 2
// countWords("hello world!") == 2
func countWords(str: String) -> Int {
    var count = 0
    for char in str {
        if char == " " {
            count += 1
        }
    }
    return count + 1
}
// Write a function that takes a string as input and returns the 
// number of words in the string that are longer than 5 characters.
// For example:
// countWordsLongerThan5("hello world") == 1
// countWordsLongerThan5("hello world!") == 1
// countWordsLongerThan5("hello world!") == 1
func countWordsLongerThan5(str: String) -> Int {
    var count = 0
    for word in str.split(separator: " ") {
        if word.count > 5 {
            count += 1
        }
    }
    return count
}
// Write a function that takes a string as input and returns the 
// number of words in the string that are longer than 5 characters.
// For example:
// countWordsLongerThan5("hello world") == 1
// countWordsLongerThan5("hello world!") == 1
// countWordsLongerThan5("hello world!") == 1
func countWordsLongerThan5(str: String) -> Int {
    var count = 0
    for word in str.split(separator: " ") {
        if word.count > 5 {
            count += 1
        }
    }
    return count
}
// Write a function that takes a string as input and returns the 
// number of words in the string that are longer than 5 characters.
// For example:
// countWordsLongerThan5("hello world") == 1
// countWordsLongerThan5("hello world!") == 1
// countWordsLongerThan5("hello world!") == 1
func countWordsLongerThan5(str: String) -> Int {
    var count = 0
    for word in str.split(separator: " ") {
        if word.count > 5 {
            count += 1
        }
    }
    return count
}
// Write a function that takes a string as input and returns the 
// number of words in the string that are longer than 5 characters.
// For example:
// countWordsLongerThan5("hello world") == 1
// countWordsLongerThan5("hello world!") == 1
// countWordsLongerThan5("hello world!") == 1
func countWordsLongerThan5(str: String) -> Int {
    var count = 0
    for word in str.split(separator: " ") {
        if word.count > 5 {
            count += 1
        }
    }
    return count
}
// Write a function that takes a string as input and returns the 
// number of words in the string that are longer than 5 characters.
// For example:
// countWordsLongerThan5("hello world") == 1
// countWordsLongerThan5("hello world!") == 1
// countWordsLongerThan5("hello world!") == 1
func countWordsLongerThan5(str: String) -> Int {
    var count = 0
    for word in str.split(separator: " ") {
        if word.count > 5 {
            count += 1
        }
    }
    return count
}
// Write a function that takes a string as input and returns the 
 // XCTAssertTrue failed

func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 && num % 2 == 1 {
            count += 1
        }
    }
    return count
}
```swift
// Write a function that takes an array of numbers as input and returns 
// the number of elements in the array that are greater than 10 and both 
// first and last digits of a number are odd (1, 3, 5, 7, 9).
// For example:
// specialFilter(nums: [15, -73, 14, -15]) == 1
// specialFilter(nums: [33, -2, -3, 45, 21, 109]) == 2
func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 && num % 2 == 1 {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 && (num % 2 == 1) {
            if num % 10 == 1 {
                count += 1
            }
        }
    }
    return count
}
```swift
// Write a function that takes an array of numbers as input and returns 
// the number of elements in the array that are greater than 10 and both 
// first and last digits of a number are odd (1, 3, 5, 7, 9).
// For example:
// specialFilter(nums: [15, -73, 14, -15]) == 1
// specialFilter(nums: [33, -2, -3, 45, 21, 109]) == 2
func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 && (num % 2 == 1) {
            if num % 10 == 1 {
                count += 1
            }
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 && (num % 10 == 1 || num % 10 == 3 || num % 10 == 5 || num % 10 == 7 || num % 10 == 9) {
            count += 1
        }
    }
    return count
}
```swift
// Write a function that takes an array of numbers as input and returns 
// the number of elements in the array that are greater than 10 and both 
// first and last digits of a number are odd (1, 3, 5, 7, 9).
// For example:
// specialFilter(nums: [15, -73, 14, -15]) == 1
// specialFilter(nums: [33, -2, -3, 45, 21, 109]) == 2
func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 && (num % 10 == 1 || num % 10 == 3 || num % 10 == 5 || num % 10 == 7 || num % 10 == 9) {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 && num % 2 == 1 {
            count += 1
        }
    }
    return count
}
```swift
// Write a function that takes an array of numbers as input and returns 
// the number of elements in the array that are greater than 10 and both 
// first and last digits of a number are odd (1, 3, 5, 7, 9).
// For example:
// specialFilter(nums: [15, -73, 14, -15]) == 1
// specialFilter(nums: [33, -2, -3, 45, 21, 109]) == 2
func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 && num % 2 == 1 {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 && (num % 10 == 1 || num % 10 == 3 || num % 10 == 5 || num % 10 == 7 || num % 10 == 9) {
            count += 1
        }
    }
    return count
}
```swift
// Write a function that takes an array of numbers as input and returns 
// the number of elements in the array that are greater than 10 and both 
// first and last digits of a number are odd (1, 3, 5, 7, 9).
// For example:
// specialFilter(nums: [15, -73, 14, -15]) == 1
// specialFilter(nums: [33, -2, -3, 45, 21, 109]) == 2
func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 && (num % 10 == 1 || num % 10 == 3 || num % 10 == 5 || num % 10 == 7 || num % 10 == 9) {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 && (num % 2 == 1) {
            if (num % 10 == 1) || (num % 10 == 3) || (num % 10 == 5) || (num % 10 == 7) || (num % 10 == 9) {
                count += 1
            }
        }
    }
    return count
}

func appleFilter(words: [String]) -> Int {
    var count = 0
    for word in words {
        if word.lowercased().contains("apple") {
            count += 1
        }
    }
    return count
}

func sumFilter(nums: [Int]) -> Int {
    var sum = 0
    for i in 1..<nums.count {
        sum += nums[i]
    }
    return sum
}

func bananaFilter(words: [String]) -> Int {
    var count = 0
    for word in words {
        if word.lowercased().contains("banana") {
            count += 1
        }
    }
    return count
}

func divisibleFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num % 3 == 0 {
            count += 1
        }
    }
    return count
}

func catFilter(words: [String]) -> Int {
    var count = 0
    for word in words {
        if word.lowercased().contains("cat") {
            count += 1
        }
    }
    return count
}

func sumFilter(nums: [Int]) -> Int {
    var sum = 0
    for i in 2..<nums.count {
        sum += nums[i]
    }
    return sum
}
```swift
// Write a function that takes an array of numbers as input and returns 
// the number of elements in the array that are greater than 10 and both 
// first and last digits of a number are odd (1, 3, 5, 7, 9).
// For example:
// specialFilter(nums: [15, -73, 14, -15]) == 1
// specialFilter(nums: [33, -2, -3, 45, 21, 109]) == 2
func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 && (num % 2 == 1) {
            if (num % 10 == 1) || (num % 10 == 3) || (num % 10 == 5) || (num % 10 == 7) || (num % 10 == 9) {
                count += 1
            }
        }
    }
    return count
}
// Write a function that takes an array of strings as input and returns 
// the number of strings that contain the word "apple" (case-insensitive).
// For example:
// appleFilter(words: ["apple", "banana", "kiwi"]) == 1
// appleFilter(words: ["apple", "apple", "apple"]) == 3
func appleFilter(words: [String]) -> Int {
    var count = 0
    for word in words {
        if word.lowercased().contains("apple") {
            count += 1
        }
    }
    return count
}
// Write a function that takes an array of integers as input and returns 
// the sum of all the elements in the array, except for the element at 
// index 0. For example:
// sumFilter(nums: [1, 2, 3, 4, 5]) == 10
// sumFilter(nums: [1, 2, 3, 4, 5, 6]) == 15
func sumFilter(nums: [Int]) -> Int {
    var sum = 0
    for i in 1..<nums.count {
        sum += nums[i]
    }
    return sum
}
// Write a function that takes an array of strings as input and returns 
// the number of strings that contain the word "banana" (case-insensitive).
// For example:
// bananaFilter(words: ["banana", "apple", "kiwi"]) == 1
// bananaFilter(words: ["banana", "banana", "banana"]) == 3
func bananaFilter(words: [String]) -> Int {
    var count = 0
    for word in words {
        if word.lowercased().contains("banana") {
            count += 1
        }
    }
    return count
}
// Write a function that takes an array of integers as input and returns 
// the number of elements in the array that are divisible by 3.
// For example:
// divisibleFilter(nums: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 4
// divisibleFilter(nums: [1, 2, 3, 4, 5, 6, 7, 8, 9]) == 3
func divisibleFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num % 3 == 0 {
            count += 1
        }
    }
    return count
}
// Write a function that takes an array of strings as input and returns 
// the number of strings that contain the word "cat" (case-insensitive).
// For example:
// catFilter(words: ["cat", "dog", "elephant"]) == 1
// catFilter(words: ["cat", "cat", "cat"]) == 3
func catFilter(words: [String]) -> Int {
    var count = 0
    for word in words {
        if word.lowercased().contains("cat") {
            count += 1
        }
    }
    return count
}
// Write a function that takes an array of integers as input and returns 
// the sum of all the elements in the array, except for the element at 
// index 0 and the element at index 1. For example:
// sumFilter(nums: [1, 2, 3, 4, 5]) == 12
// sumFilter(nums: [1, 2, 3, 4, 5, 6]) == 15
func sumFilter(nums: [Int]) -> Int {
    var sum = 0
    for i in 2..<nums.count {
        sum += nums[i]
    }
    return sum
}
// Write a function that takes an array of strings as input and returns 
// the number of strings that contain the word "dog" (case-insensitive).
func sumFilter(nums: [Int]) -> Int { // invalid redeclaration of 'sumFilter(nums:)'

func specialFilter(nums: [Int]) -> Int {
  var count = 0
  for num in nums {
    if num > 10 && (num % 10 == 1 || num % 10 == 3 || num % 10 == 5 || num % 10 == 7 || num % 10 == 9) {
      count += 1
    }
  }
  return count
}
```swift
// Write a function that takes an array of numbers as input and returns 
// the number of elements in the array that are greater than 10 and both 
// first and last digits of a number are odd (1, 3, 5, 7, 9).
// For example:
// specialFilter(nums: [15, -73, 14, -15]) == 1
// specialFilter(nums: [33, -2, -3, 45, 21, 109]) == 2
func specialFilter(nums: [Int]) -> Int {
  var count = 0
  for num in nums {
    if num > 10 && (num % 10 == 1 || num % 10 == 3 || num % 10 == 5 || num % 10 == 7 || num % 10 == 9) {
      count += 1
    }
  }
  return count
}
<|file_separator|>
 // XCTAssertTrue failed

func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 && (num % 10 == 1 || num % 10 == 3 || num % 10 == 5 || num % 10 == 7 || num % 10 == 9) {
            count += 1
        }
    }
    return count
}
```swift
// Write a function that takes an array of numbers as input and returns 
// the number of elements in the array that are greater than 10 and both 
// first and last digits of a number are odd (1, 3, 5, 7, 9).
// For example:
// specialFilter(nums: [15, -73, 14, -15]) == 1
// specialFilter(nums: [33, -2, -3, 45, 21, 109]) == 2
func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 && (num % 10 == 1 || num % 10 == 3 || num % 10 == 5 || num % 10 == 7 || num % 10 == 9) {
            count += 1
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 {
            if num % 2 == 1 && num % 10 == 1 {
                count += 1
            }
        }
    }
    return count
}

func vowelCount(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            count += 1
        }
    }
    return count
}

func sumOfSquares(nums: [Int]) -> Int {
    var sum = 0
    for num in nums {
        sum += num * num
    }
    return sum
}

func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 {
            if num % 2 == 1 {
                count += 1
            }
        }
    }
    return count
}
```swift
// Write a function that takes an array of numbers as input and returns 
// the number of elements in the array that are greater than 10 and both 
// first and last digits of a number are odd (1, 3, 5, 7, 9).
// For example:
// specialFilter(nums: [15, -73, 14, -15]) == 1
// specialFilter(nums: [33, -2, -3, 45, 21, 109]) == 2
func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 {
            if num % 2 == 1 && num % 10 == 1 {
                count += 1
            }
        }
    }
    return count
}
// Write a function that takes a string as input and returns the 
// number of words in the string that start with a vowel (a, e, i, o, u).
// For example:
// vowelCount("Hello, world!") == 3
// vowelCount("Hello, my name is John!") == 3
// vowelCount("Hello, my name is John!") == 3
func vowelCount(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            count += 1
        }
    }
    return count
}
// Write a function that takes an array of numbers as input and returns 
// the sum of the squares of all the numbers in the array.
// For example:
// sumOfSquares([1, 2, 3]) == 14
// sumOfSquares([1, 2, 3, 4]) == 30
// sumOfSquares([1, 2, 3, 4, 5]) == 55
func sumOfSquares(nums: [Int]) -> Int {
    var sum = 0
    for num in nums {
        sum += num * num
    }
    return sum
}
// Write a function that takes a string as input and returns the 
// number of words in the string that end with a vowel (a, e, i, o, u).
// For example:
// vowelCount("Hello, world!") == 3
// vowelCount("Hello, my name is John!") == 3
// vowelCount("Hello, my name is John!") == 3
func vowelCount(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            count += 1
        }
    }
    return count
}
// Write a function that takes an array of numbers as input and returns 
// the number of elements in the array that are greater than 10 and 
// at least one of the elements is odd.
// For example:
// specialFilter(nums: [15, -73, 14, -15]) == 1
// specialFilter(nums: [33, -2, -3, 45, 21, 109]) == 2
func specialFilter(nums: [Int]) -> Int {
    var count = 0
    for num in nums {
        if num > 10 {
            if num % 2 == 1 {
                count += 1
            }
        }
    }
    return count
}
// Write a function that takes a string as input and returns the 
// number of words in the string that end with a vowel (a, e, i, o, u).
// For example:
// vowelCount("Hello, world!") == 3
// vowelCount("Hello, my name is John!") == 3
// vowelCount("Hello, my name is John!") == 3
func vowelCount(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            count += 1
        }
    }
    return count
}
// Write a function that takes an array of numbers as input and returns 
// the sum of the squares of all the numbers in the array.
// For example:
// sumOfSquares([1, 2, 3]) == 14
// sumOfSquares([1, 2, 3, 4]) == 30
// sumOfSquares([1, 2, 3, 4, 5]) == 55
func sumOfSquares(nums: [Int]) -> Int {
    var sum = 0
    for num in nums {
        sum += num * num
    }
    return sum
}
// Write a function that takes a
func specialFilter(nums: [Int]) -> Int { // invalid redeclaration of 'specialFilter(nums:)'

func getMaxTriples(n: Int) -> Int {
    var result = 0
    for i in 1..<n {
        for j in 1..<n {
            for k in 1..<n {
                if (i * i + j * j == k * k) && (i + j + k) % 3 == 0 {
                    result += 1
                }
            }
        }
    }
    return result
}
```swift
// You are given a positive integer n. You have to create an integer array a of length n.
// For each i (1 ≤ i ≤ n), the value of a[i] = i * i - i + 1.
// Return the number of triples (a[i], a[j], a[k]) of a where i < j < k, 
// and a[i] + a[j] + a[k] is a multiple of 3.
// Example :
// Explanation: 
// a = [1, 3, 7, 13, 21]
// The only valid triple is (1, 7, 13).
// getMaxTriples(n: 5) == 1
func getMaxTriples(n: Int) -> Int {
    var result = 0
    for i in 1..<n {
        for j in 1..<n {
            for k in 1..<n {
                if (i * i + j * j == k * k) && (i + j + k) % 3 == 0 {
                    result += 1
                }
            }
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func getMaxTriples(n: Int) -> Int {
    var a = [Int]()
    for i in 1...n {
        a.append(i * i - i + 1)
    }
    var count = 0
    for i in 0..<a.count {
        for j in i+1..<a.count {
            for k in j+1..<a.count {
                if a[i] + a[j] + a[k] % 3 == 0 {
                    count += 1
                }
            }
        }
    }
    return count
}
```swift
// You are given a positive integer n. You have to create an integer array a of length n.
// For each i (1 ≤ i ≤ n), the value of a[i] = i * i - i + 1.
// Return the number of triples (a[i], a[j], a[k]) of a where i < j < k, 
// and a[i] + a[j] + a[k] is a multiple of 3.
// Example :
// Explanation: 
// a = [1, 3, 7, 13, 21]
// The only valid triple is (1, 7, 13).
// getMaxTriples(n: 5) == 1
func getMaxTriples(n: Int) -> Int {
    var a = [Int]()
    for i in 1...n {
        a.append(i * i - i + 1)
    }
    var count = 0
    for i in 0..<a.count {
        for j in i+1..<a.count {
            for k in j+1..<a.count {
                if a[i] + a[j] + a[k] % 3 == 0 {
                    count += 1
                }
            }
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func getMaxTriples(n: Int) -> Int {
    var a = [Int]()
    for i in 1...n {
        a.append(i * i - i + 1)
    }
    var count = 0
    for i in 0..<n {
        for j in i+1..<n {
            for k in j+1..<n {
                if a[i] + a[j] + a[k] % 3 == 0 {
                    count += 1
                }
            }
        }
    }
    return count
}
```swift
// You are given a positive integer n. You have to create an integer array a of length n.
// For each i (1 ≤ i ≤ n), the value of a[i] = i * i - i + 1.
// Return the number of triples (a[i], a[j], a[k]) of a where i < j < k, 
// and a[i] + a[j] + a[k] is a multiple of 3.
// Example :
// Explanation: 
// a = [1, 3, 7, 13, 21]
// The only valid triple is (1, 7, 13).
// getMaxTriples(n: 5) == 1
func getMaxTriples(n: Int) -> Int {
    var a = [Int]()
    for i in 1...n {
        a.append(i * i - i + 1)
    }
    var count = 0
    for i in 0..<n {
        for j in i+1..<n {
            for k in j+1..<n {
                if a[i] + a[j] + a[k] % 3 == 0 {
                    count += 1
                }
            }
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func getMaxTriples(n: Int) -> Int {
    var result = 0
    for i in 1..<n {
        for j in 1..<n {
            for k in 1..<n {
                if (i * i + j * j == k * k) && (i + j + k) % 3 == 0 {
                    result += 1
                }
            }
        }
    }
    return result
}
```swift
// You are given a positive integer n. You have to create an integer array a of length n.
// For each i (1 ≤ i ≤ n), the value of a[i] = i * i - i + 1.
// Return the number of triples (a[i], a[j], a[k]) of a where i < j < k, 
// and a[i] + a[j] + a[k] is a multiple of 3.
// Example :
// Explanation: 
// a = [1, 3, 7, 13, 21]
// The only valid triple is (1, 7, 13).
// getMaxTriples(n: 5) == 1
func getMaxTriples(n: Int) -> Int {
    var result = 0
    for i in 1..<n {
        for j in 1..<n {
            for k in 1..<n {
                if (i * i + j * j == k * k) && (i + j + k) % 3 == 0 {
                    result += 1
                }
            }
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func getMaxTriples(n: Int) -> Int {
    var a = [Int]()
    for i in 1...n {
        a.append(i * i - i + 1)
    }
    var count = 0
    for i in 0..<a.count {
        for j in i+1..<a.count {
            for k in j+1..<a.count {
                if (a[i] + a[j] + a[k]) % 3 == 0 {
                    count += 1
                }
            }
        }
    }
    return count
}
```swift
// You are given a positive integer n. You have to create an integer array a of length n.
// For each i (1 ≤ i ≤ n), the value of a[i] = i * i - i + 1.
// Return the number of triples (a[i], a[j], a[k]) of a where i < j < k, 
// and a[i] + a[j] + a[k] is a multiple of 3.
// Example :
// Explanation: 
// a = [1, 3, 7, 13, 21]
// The only valid triple is (1, 7, 13).
// getMaxTriples(n: 5) == 1
func getMaxTriples(n: Int) -> Int {
    var a = [Int]()
    for i in 1...n {
        a.append(i * i - i + 1)
    }
    var count = 0
    for i in 0..<a.count {
        for j in i+1..<a.count {
            for k in j+1..<a.count {
                if (a[i] + a[j] + a[k]) % 3 == 0 {
                    count += 1
                }
            }
        }
    }
    return count
}
<|file_separator|>

func getMaxTriples(n: Int) -> Int {
    var a = [Int]()
    for i in 1...n {
        a.append(i * i - i + 1)
    }
    var count = 0
    for i in 0..<n {
        for j in i+1..<n {
            for k in j+1..<n {
                if a[i] + a[j] + a[k] % 3 == 0 {
                    count += 1
                }
            }
        }
    }
    return count
}
```swift
// You are given a positive integer n. You have to create an integer array a of length n.
// For each i (1 ≤ i ≤ n), the value of a[i] = i * i - i + 1.
// Return the number of triples (a[i], a[j], a[k]) of a where i < j < k, 
// and a[i] + a[j] + a[k] is a multiple of 3.
// Example :
// Explanation: 
// a = [1, 3, 7, 13, 21]
// The only valid triple is (1, 7, 13).
// getMaxTriples(n: 5) == 1
func getMaxTriples(n: Int) -> Int {
    var a = [Int]()
    for i in 1...n {
        a.append(i * i - i + 1)
    }
    var count = 0
    for i in 0..<n {
        for j in i+1..<n {
            for k in j+1..<n {
                if a[i] + a[j] + a[k] % 3 == 0 {
                    count += 1
                }
            }
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func getMaxTriples(n: Int) -> Int {
    var a = [Int]()
    for i in 1...n {
        a.append(i * i - i + 1)
    }
    var count = 0
    for i in 0..<n {
        for j in 0..<n {
            for k in 0..<n {
                if (a[i] + a[j] + a[k]) % 3 == 0 {
                    count += 1
                }
            }
        }
    }
    return count
}
```swift
// You are given a positive integer n. You have to create an integer array a of length n.
// For each i (1 ≤ i ≤ n), the value of a[i] = i * i - i + 1.
// Return the number of triples (a[i], a[j], a[k]) of a where i < j < k, 
// and a[i] + a[j] + a[k] is a multiple of 3.
// Example :
// Explanation: 
// a = [1, 3, 7, 13, 21]
// The only valid triple is (1, 7, 13).
// getMaxTriples(n: 5) == 1
func getMaxTriples(n: Int) -> Int {
    var a = [Int]()
    for i in 1...n {
        a.append(i * i - i + 1)
    }
    var count = 0
    for i in 0..<n {
        for j in 0..<n {
            for k in 0..<n {
                if (a[i] + a[j] + a[k]) % 3 == 0 {
                    count += 1
                }
            }
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func getMaxTriples(n: Int) -> Int {
    var a = [Int]()
    for i in 1...n {
        a.append(i * i - i + 1)
    }
    var count = 0
    for i in 0..<n {
        for j in 0..<n {
            for k in 0..<n {
                if (a[i] + a[j] + a[k]) % 3 == 0 {
                    count += 1
                }
            }
        }
    }
    return count
}
```swift
// You are given a positive integer n. You have to create an integer array a of length n.
// For each i (1 ≤ i ≤ n), the value of a[i] = i * i - i + 1.
// Return the number of triples (a[i], a[j], a[k]) of a where i < j < k, 
// and a[i] + a[j] + a[k] is a multiple of 3.
// Example :
// Explanation: 
// a = [1, 3, 7, 13, 21]
// The only valid triple is (1, 7, 13).
// getMaxTriples(n: 5) == 1
func getMaxTriples(n: Int) -> Int {
    var a = [Int]()
    for i in 1...n {
        a.append(i * i - i + 1)
    }
    var count = 0
    for i in 0..<n {
        for j in 0..<n {
            for k in 0..<n {
                if (a[i] + a[j] + a[k]) % 3 == 0 {
                    count += 1
                }
            }
        }
    }
    return count
}
<|file_separator|>
 // XCTAssertTrue failed

func getMaxTriples(n: Int) -> Int {
    var a = [Int]()
    for i in 1...n {
        a.append(i * i - i + 1)
    }
    var count = 0
    for i in 0..<a.count {
        for j in i+1..<a.count {
            for k in j+1..<a.count {
                if (a[i] + a[j] + a[k]) % 3 == 0 {
                    count += 1
                }
            }
        }
    }
    return count
}
```swift
// You are given a positive integer n. You have to create an integer array a of length n.
// For each i (1 ≤ i ≤ n), the value of a[i] = i * i - i + 1.
// Return the number of triples (a[i], a[j], a[k]) of a where i < j < k, 
// and a[i] + a[j] + a[k] is a multiple of 3.
// Example :
// Explanation: 
// a = [1, 3, 7, 13, 21]
// The only valid triple is (1, 7, 13).
// getMaxTriples(n: 5) == 1
func getMaxTriples(n: Int) -> Int {
    var a = [Int]()
    for i in 1...n {
        a.append(i * i - i + 1)
    }
    var count = 0
    for i in 0..<a.count {
        for j in i+1..<a.count {
            for k in j+1..<a.count {
                if (a[i] + a[j] + a[k]) % 3 == 0 {
                    count += 1
                }
            }
        }
    }
    return count
}
<|file_separator|>

func getMaxTriples(n: Int) -> Int {
    var result = 0
    for i in 1..<n {
        for j in 1..<n {
            for k in 1..<n {
                if (i * i + j * j == k * k) && (i + j + k) % 3 == 0 {
                    result += 1
                }
            }
        }
    }
    return result
}
```swift
// You are given a positive integer n. You have to create an integer array a of length n.
// For each i (1 ≤ i ≤ n), the value of a[i] = i * i - i + 1.
// Return the number of triples (a[i], a[j], a[k]) of a where i < j < k, 
// and a[i] + a[j] + a[k] is a multiple of 3.
// Example :
// Explanation: 
// a = [1, 3, 7, 13, 21]
// The only valid triple is (1, 7, 13).
// getMaxTriples(n: 5) == 1
func getMaxTriples(n: Int) -> Int {
    var result = 0
    for i in 1..<n {
        for j in 1..<n {
            for k in 1..<n {
                if (i * i + j * j == k * k) && (i + j + k) % 3 == 0 {
                    result += 1
                }
            }
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func sortedListSum(lst: [String]) -> [String] {
    var result = [String]()
    for i in lst {
        if i.count % 2 == 0 {
            result.append(i)
        }
    }
    result.sort()
    return result
}
```swift
// Write a function that accepts an array of strings as a parameter,
// deletes the strings that have odd lengths from it,
// and returns the resulted array with a sorted order,
// The array is always an array of strings and never an array of numbers,
// and it may contain duplicates.
// The order of the array should be ascending by length of each word, and you
// should return the array sorted by that rule.
// If two words have the same length, sort the array alphabetically.
// The function should return an array of strings in sorted order.
// You may assume that all words will have the same length.
// For example:
// sortedListSum(lst: ["aa", "a", "aaa"]) == ["aa"]
// sortedListSum(lst: ["ab", "a", "aaa", "cd"]) == ["ab", "cd"]
func sortedListSum(lst: [String]) -> [String] {
    var result = [String]()
    for i in lst {
        if i.count % 2 == 0 {
            result.append(i)
        }
    }
    result.sort()
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func sortedListSum(lst: [String]) -> [String] {
    var result = [String]()
    for i in lst {
        if i.count % 2 == 0 {
            result.append(i)
        }
    }
    result.sort()
    return result
}
```swift
// Write a function that accepts an array of strings as a parameter,
// deletes the strings that have odd lengths from it,
// and returns the resulted array with a sorted order,
// The array is always an array of strings and never an array of numbers,
// and it may contain duplicates.
// The order of the array should be ascending by length of each word, and you
// should return the array sorted by that rule.
// If two words have the same length, sort the array alphabetically.
// The function should return an array of strings in sorted order.
// You may assume that all words will have the same length.
// For example:
// sortedListSum(lst: ["aa", "a", "aaa"]) == ["aa"]
// sortedListSum(lst: ["ab", "a", "aaa", "cd"]) == ["ab", "cd"]
func sortedListSum(lst: [String]) -> [String] {
    var result = [String]()
    for i in lst {
        if i.count % 2 == 0 {
            result.append(i)
        }
    }
    result.sort()
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func sortedListSum(lst: [String]) -> [String] {
    var result = [String]()
    for i in lst {
        if i.count % 2 == 0 {
            result.append(i)
        }
    }
    result.sort()
    return result
}
```swift
// Write a function that accepts an array of strings as a parameter,
// deletes the strings that have odd lengths from it,
// and returns the resulted array with a sorted order,
// The array is always an array of strings and never an array of numbers,
// and it may contain duplicates.
// The order of the array should be ascending by length of each word, and you
// should return the array sorted by that rule.
// If two words have the same length, sort the array alphabetically.
// The function should return an array of strings in sorted order.
// You may assume that all words will have the same length.
// For example:
// sortedListSum(lst: ["aa", "a", "aaa"]) == ["aa"]
// sortedListSum(lst: ["ab", "a", "aaa", "cd"]) == ["ab", "cd"]
func sortedListSum(lst: [String]) -> [String] {
    var result = [String]()
    for i in lst {
        if i.count % 2 == 0 {
            result.append(i)
        }
    }
    result.sort()
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func sortedListSum(lst: [String]) -> [String] {
  var result = [String]()
  for i in lst {
    if i.count % 2 == 0 {
      result.append(i)
    }
  }
  result.sort()
  return result
}
```swift
// Write a function that accepts an array of strings as a parameter,
// deletes the strings that have odd lengths from it,
// and returns the resulted array with a sorted order,
// The array is always an array of strings and never an array of numbers,
// and it may contain duplicates.
// The order of the array should be ascending by length of each word, and you
// should return the array sorted by that rule.
// If two words have the same length, sort the array alphabetically.
// The function should return an array of strings in sorted order.
// You may assume that all words will have the same length.
// For example:
// sortedListSum(lst: ["aa", "a", "aaa"]) == ["aa"]
// sortedListSum(lst: ["ab", "a", "aaa", "cd"]) == ["ab", "cd"]
func sortedListSum(lst: [String]) -> [String] {
  var result = [String]()
  for i in lst {
    if i.count % 2 == 0 {
      result.append(i)
    }
  }
  result.sort()
  return result
}
<|file_separator|>
 // XCTAssertTrue failed

func sortedListSum(lst: [String]) -> [String] {
    var result = [String]()
    for i in 0..<lst.count {
        if lst[i].count % 2 == 0 {
            result.append(lst[i])
        }
    }
    result.sort()
    return result
}
```swift
// Write a function that accepts an array of strings as a parameter,
// deletes the strings that have odd lengths from it,
// and returns the resulted array with a sorted order,
// The array is always an array of strings and never an array of numbers,
// and it may contain duplicates.
// The order of the array should be ascending by length of each word, and you
// should return the array sorted by that rule.
// If two words have the same length, sort the array alphabetically.
// The function should return an array of strings in sorted order.
// You may assume that all words will have the same length.
// For example:
// sortedListSum(lst: ["aa", "a", "aaa"]) == ["aa"]
// sortedListSum(lst: ["ab", "a", "aaa", "cd"]) == ["ab", "cd"]
func sortedListSum(lst: [String]) -> [String] {
    var result = [String]()
    for i in 0..<lst.count {
        if lst[i].count % 2 == 0 {
            result.append(lst[i])
        }
    }
    result.sort()
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func sortedListSum(lst: [String]) -> [String] {
    var result = [String]()
    for word in lst {
        if word.count % 2 == 0 {
            result.append(word)
        }
    }
    return result.sorted()
}
```swift
// Write a function that accepts an array of strings as a parameter,
// deletes the strings that have odd lengths from it,
// and returns the resulted array with a sorted order,
// The array is always an array of strings and never an array of numbers,
// and it may contain duplicates.
// The order of the array should be ascending by length of each word, and you
// should return the array sorted by that rule.
// If two words have the same length, sort the array alphabetically.
// The function should return an array of strings in sorted order.
// You may assume that all words will have the same length.
// For example:
// sortedListSum(lst: ["aa", "a", "aaa"]) == ["aa"]
// sortedListSum(lst: ["ab", "a", "aaa", "cd"]) == ["ab", "cd"]
func sortedListSum(lst: [String]) -> [String] {
    var result = [String]()
    for word in lst {
        if word.count % 2 == 0 {
            result.append(word)
        }
    }
    return result.sorted()
}
<|file_separator|>
 // XCTAssertTrue failed

func sortedListSum(lst: [String]) -> [String] {
    var result = [String]()
    for i in lst {
        if i.count % 2 == 0 {
            result.append(i)
        }
    }
    result.sort()
    return result
}
```swift
// Write a function that accepts an array of strings as a parameter,
// deletes the strings that have odd lengths from it,
// and returns the resulted array with a sorted order,
// The array is always an array of strings and never an array of numbers,
// and it may contain duplicates.
// The order of the array should be ascending by length of each word, and you
// should return the array sorted by that rule.
// If two words have the same length, sort the array alphabetically.
// The function should return an array of strings in sorted order.
// You may assume that all words will have the same length.
// For example:
// sortedListSum(lst: ["aa", "a", "aaa"]) == ["aa"]
// sortedListSum(lst: ["ab", "a", "aaa", "cd"]) == ["ab", "cd"]
func sortedListSum(lst: [String]) -> [String] {
    var result = [String]()
    for i in lst {
        if i.count % 2 == 0 {
            result.append(i)
        }
    }
    result.sort()
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func sortedListSum(lst: [String]) -> [String] {
  var result = [String]()
  for word in lst {
    if word.count % 2 == 0 {
      result.append(word)
    }
  }
  result.sort()
  return result
}
```swift
// Write a function that accepts an array of strings as a parameter,
// deletes the strings that have odd lengths from it,
// and returns the resulted array with a sorted order,
// The array is always an array of strings and never an array of numbers,
// and it may contain duplicates.
// The order of the array should be ascending by length of each word, and you
// should return the array sorted by that rule.
// If two words have the same length, sort the array alphabetically.
// The function should return an array of strings in sorted order.
// You may assume that all words will have the same length.
// For example:
// sortedListSum(lst: ["aa", "a", "aaa"]) == ["aa"]
// sortedListSum(lst: ["ab", "a", "aaa", "cd"]) == ["ab", "cd"]
func sortedListSum(lst: [String]) -> [String] {
  var result = [String]()
  for word in lst {
    if word.count % 2 == 0 {
      result.append(word)
    }
  }
  result.sort()
  return result
}
<|file_separator|>
 // XCTAssertTrue failed

func sortedListSum(lst: [String]) -> [String] {
    var result = [String]()
    for i in lst {
        if i.count % 2 == 0 {
            result.append(i)
        }
    }
    result.sort(by: { $0.count < $1.count })
    return result
}
```swift
// Write a function that accepts an array of strings as a parameter,
// deletes the strings that have odd lengths from it,
// and returns the resulted array with a sorted order,
// The array is always an array of strings and never an array of numbers,
// and it may contain duplicates.
// The order of the array should be ascending by length of each word, and you
// should return the array sorted by that rule.
// If two words have the same length, sort the array alphabetically.
// The function should return an array of strings in sorted order.
// You may assume that all words will have the same length.
// For example:
// sortedListSum(lst: ["aa", "a", "aaa"]) == ["aa"]
// sortedListSum(lst: ["ab", "a", "aaa", "cd"]) == ["ab", "cd"]
func sortedListSum(lst: [String]) -> [String] {
    var result = [String]()
    for i in lst {
        if i.count % 2 == 0 {
            result.append(i)
        }
    }
    result.sort(by: { $0.count < $1.count })
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func sortedListSum(lst: [String]) -> [String] {
    var result = [String]()
    for word in lst {
        if word.count % 2 == 0 {
            result.append(word)
        }
    }
    result.sort()
    return result
}
```swift
// Write a function that accepts an array of strings as a parameter,
// deletes the strings that have odd lengths from it,
// and returns the resulted array with a sorted order,
// The array is always an array of strings and never an array of numbers,
// and it may contain duplicates.
// The order of the array should be ascending by length of each word, and you
// should return the array sorted by that rule.
// If two words have the same length, sort the array alphabetically.
// The function should return an array of strings in sorted order.
// You may assume that all words will have the same length.
// For example:
// sortedListSum(lst: ["aa", "a", "aaa"]) == ["aa"]
// sortedListSum(lst: ["ab", "a", "aaa", "cd"]) == ["ab", "cd"]
func sortedListSum(lst: [String]) -> [String] {
    var result = [String]()
    for word in lst {
        if word.count % 2 == 0 {
            result.append(word)
        }
    }
    result.sort()
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func xOrY(n: Int, x: Int, y: Int) -> Int {
    if isPrime(n: n) {
        return x
    } else {
        return y
    }
}

func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    for i in 2...n/2 {
        if n % i == 0 {
            return false
        }
    }
    return true
}
```swift
// A simple program which should return the value of x if n is 
// a prime number and should return the value of y otherwise.
// Examples:
// xOrY(n: 7, x: 34, y: 12) == 34
// xOrY(n: 15, x: 8, y: 5) == 5
func xOrY(n: Int, x: Int, y: Int) -> Int {
    if isPrime(n: n) {
        return x
    } else {
        return y
    }
}

func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    for i in 2...n/2 {
        if n % i == 0 {
            return false
        }
    }
    return true
}

print(xOrY(n: 7, x: 34, y: 12))
print(xOrY(n: 15, x: 8, y: 5))
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func xOrY(n: Int, x: Int, y: Int) -> Int {
    if n == 1 {
        return x
    }
    if n == 2 {
        return y
    }
    if isPrime(n: n) {
        return x
    }
    return y
}

func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...n {
        if n % i == 0 {
            return false
        }
    }
    return true
}
```swift
// A simple program which should return the value of x if n is 
// a prime number and should return the value of y otherwise.
// Examples:
// xOrY(n: 7, x: 34, y: 12) == 34
// xOrY(n: 15, x: 8, y: 5) == 5
func xOrY(n: Int, x: Int, y: Int) -> Int {
    if n == 1 {
        return x
    }
    if n == 2 {
        return y
    }
    if isPrime(n: n) {
        return x
    }
    return y
}

func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...n {
        if n % i == 0 {
            return false
        }
    }
    return true
}<|file_separator|>
 // XCTAssertTrue failed

func xOrY(n: Int, x: Int, y: Int) -> Int {
    if n == 1 {
        return x
    }
    if n == 2 {
        return y
    }
    if isPrime(n: n) {
        return x
    }
    return y
}

func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...n/2 {
        if n % i == 0 {
            return false
        }
    }
    return true
}
```swift
// A simple program which should return the value of x if n is 
// a prime number and should return the value of y otherwise.
// Examples:
// xOrY(n: 7, x: 34, y: 12) == 34
// xOrY(n: 15, x: 8, y: 5) == 5
func xOrY(n: Int, x: Int, y: Int) -> Int {
    if n == 1 {
        return x
    }
    if n == 2 {
        return y
    }
    if isPrime(n: n) {
        return x
    }
    return y
}

func isPrime(n: Int) -> Bool {
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...n/2 {
        if n % i == 0 {
            return false
        }
    }
    return true
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func xOrY(n: Int, x: Int, y: Int) -> Int {
    if n == 1 {
        return x
    }
    if n == 2 {
        return y
    }
    var x = x
    var y = y
    for i in 2...n {
        if n % i == 0 {
            if i == 2 {
                return x
            } else {
                return y
            }
        }
    }
    return x
}
```swift
// A simple program which should return the value of x if n is 
// a prime number and should return the value of y otherwise.
// Examples:
// xOrY(n: 7, x: 34, y: 12) == 34
// xOrY(n: 15, x: 8, y: 5) == 5
func xOrY(n: Int, x: Int, y: Int) -> Int {
    if n == 1 {
        return x
    }
    if n == 2 {
        return y
    }
    var x = x
    var y = y
    for i in 2...n {
        if n % i == 0 {
            if i == 2 {
                return x
            } else {
                return y
            }
        }
    }
    return x
}
<|file_separator|>
var x = x // variable 'x' was never mutated; consider changing to 'let' constant
var y = y // variable 'y' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

```swift
// A simple program which should return the value of x if n is 
// a prime number and should return the value of y otherwise.
// Examples:
// xOrY(n: 7, x: 34, y: 12) == 34
// xOrY(n: 15, x: 8, y: 5) == 5
func xOrY(n: Int, x: Int, y: Int) -> Int {
    if n == 1 {
        return x
    }
    if n == 2 {
        return y
    }
    if n == 3 {
        return x
    }
    if n == 4 {
        return y
    }
    if n == 5 {
        return x
    }
    if n == 6 {
        return y
    }
    if n == 7 {
        return x
    }
    if n == 8 {
        return y
    }
    if n == 9 {
        return x
    }
    if n == 10 {
        return y
    }
    if n == 11 {
        return x
    }
    if n == 12 {
        return y
    }
    if n == 13 {
        return x
    }
    if n == 14 {
        return y
    }
    if n == 15 {
        return x
    }
    if n == 16 {
        return y
    }
    if n == 17 {
        return x
    }
    if n == 18 {
        return y
    }
    if n == 19 {
        return x
    }
    if n == 20 {
        return y
    }
    if n == 21 {
        return x
    }
    if n == 22 {
        return y
    }
    if n == 23 {
        return x
    }
    if n == 24 {
        return y
    }
    if n == 25 {
        return x
    }
    if n == 26 {
        return y
    }
    if n == 27 {
        return x
    }
    if n == 28 {
        return y
    }
    if n == 29 {
        return x
    }
    if n == 30 {
        return y
    }
    if n == 31 {
        return x
    }
    if n == 32 {
        return y
    }
    if n == 33 {
        return x
    }
    if n == 34 {
        return y
    }
    if n == 35 {
        return x
    }
    if n == 36 {
        return y
    }
    if n == 37 {
        return x
    }
    if n == 38 {
        return y
    }
    if n == 39 {
        return x
    }
    if n == 40 {
        return y
    }
    if n == 41 {
        return x
    }
    if n == 42 {
        return y
    }
    if n == 43 {
        return x
    }
    if n == 44 {
        return y
    }
    if n == 45 {
        return x
    }
    if n == 46 {
        return y
    }
    if n == 47 {
        return x
    }
    if n == 48 {
        return y
    }
    if n == 49 {
        return x
    }
    if n == 50 {
        return y
    }
    if n == 51 {
        return x
    }
    if n == 52 {
        return y
    }
    if n == 53 {
        return x
    }
    if n == 54 {
        return y
    }
    if n == 55 {
        return x
    }
    if n == 56 {
        return y
    }
    if n == 57 {
        return x
    }
    if n == 58 {
        return y
    }
    if n == 59 {
        return x
    }
    if n == 60 {
        return y
    }
    if n == 61 {
        return x
    }
    if n == 62 {
        return y
    }
    if n == 63 {
        return x
    }
    if n == 64 {
        return y
    }
    if n == 65 {
XCTAssertTrue(xOrY(n: 7, x: 34, y: 12) == 34) // cannot find 'xOrY' in scope
XCTAssertTrue(xOrY(n: 15, x: 8, y: 5) == 5) // cannot find 'xOrY' in scope
XCTAssertTrue(xOrY(n: 3, x: 33, y: 5212) == 33) // cannot find 'xOrY' in scope
XCTAssertTrue(xOrY(n: 1259, x: 3, y: 52) == 3) // cannot find 'xOrY' in scope
XCTAssertTrue(xOrY(n: 7919, x: -1, y: 12) == -1) // cannot find 'xOrY' in scope
XCTAssertTrue(xOrY(n: 3609, x: 1245, y: 583) == 583) // cannot find 'xOrY' in scope
XCTAssertTrue(xOrY(n: 91, x: 56, y: 129) == 129) // cannot find 'xOrY' in scope
XCTAssertTrue(xOrY(n: 6, x: 34, y: 1234) == 1234) // cannot find 'xOrY' in scope
XCTAssertTrue(xOrY(n: 1, x: 2, y: 0) == 0) // cannot find 'xOrY' in scope
XCTAssertTrue(xOrY(n: 2, x: 2, y: 0) == 2) // cannot find 'xOrY' in scope

func xOrY(n: Int, x: Int, y: Int) -> Int {
    if n == 1 {
        return x
    }
    if n == 2 {
        return y
    }
    if n % 2 == 0 {
        return x
    }
    var i = 3
    while i * i <= n {
        if n % i == 0 {
            return x
        }
        i += 2
    }
    return y
}
```swift
// A simple program which should return the value of x if n is 
// a prime number and should return the value of y otherwise.
// Examples:
// xOrY(n: 7, x: 34, y: 12) == 34
// xOrY(n: 15, x: 8, y: 5) == 5
func xOrY(n: Int, x: Int, y: Int) -> Int {
    if n == 1 {
        return x
    }
    if n == 2 {
        return y
    }
    if n % 2 == 0 {
        return x
    }
    var i = 3
    while i * i <= n {
        if n % i == 0 {
            return x
        }
        i += 2
    }
    return y
}
<|file_separator|>
 // XCTAssertTrue failed

func xOrY(n: Int, x: Int, y: Int) -> Int {
    if isPrime(n: n) {
        return x
    }
    return y
}

func isPrime(n: Int) -> Bool {
    if n == 1 {
        return false
    }
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...n {
        if n % i == 0 {
            return false
        }
    }
    return true
}
```swift
// A simple program which should return the value of x if n is 
// a prime number and should return the value of y otherwise.
// Examples:
// xOrY(n: 7, x: 34, y: 12) == 34
// xOrY(n: 15, x: 8, y: 5) == 5
func xOrY(n: Int, x: Int, y: Int) -> Int {
    if isPrime(n: n) {
        return x
    }
    return y
}

func isPrime(n: Int) -> Bool {
    if n == 1 {
        return false
    }
    if n == 2 {
        return true
    }
    if n % 2 == 0 {
        return false
    }
    for i in 3...n {
        if n % i == 0 {
            return false
        }
    }
    return true
}
<|file_separator|>
 // XCTAssertTrue failed

```swift
// A simple program which should return the value of x if n is 
// a prime number and should return the value of y otherwise.
// Examples:
// xOrY(n: 7, x: 34, y: 12) == 34
// xOrY(n: 15, x: 8, y: 5) == 5
func xOrY(n: Int, x: Int, y: Int) -> Int {
    if n == 1 {
        return x
    }
    if n == 2 {
        return y
    }
    if n == 3 {
        return x
    }
    if n == 4 {
        return y
    }
    if n == 5 {
        return x
    }
    if n == 6 {
        return y
    }
    if n == 7 {
        return x
    }
    if n == 8 {
        return y
    }
    if n == 9 {
        return x
    }
    if n == 10 {
        return y
    }
    if n == 11 {
        return x
    }
    if n == 12 {
        return y
    }
    if n == 13 {
        return x
    }
    if n == 14 {
        return y
    }
    if n == 15 {
        return x
    }
    if n == 16 {
        return y
    }
    if n == 17 {
        return x
    }
    if n == 18 {
        return y
    }
    if n == 19 {
        return x
    }
    if n == 20 {
        return y
    }
    if n == 21 {
        return x
    }
    if n == 22 {
        return y
    }
    if n == 23 {
        return x
    }
    if n == 24 {
        return y
    }
    if n == 25 {
        return x
    }
    if n == 26 {
        return y
    }
    if n == 27 {
        return x
    }
    if n == 28 {
        return y
    }
    if n == 29 {
        return x
    }
    if n == 30 {
        return y
    }
    if n == 31 {
        return x
    }
    if n == 32 {
        return y
    }
    if n == 33 {
        return x
    }
    if n == 34 {
        return y
    }
    if n == 35 {
        return x
    }
    if n == 36 {
        return y
    }
    if n == 37 {
        return x
    }
    if n == 38 {
        return y
    }
    if n == 39 {
        return x
    }
    if n == 40 {
        return y
    }
    if n == 41 {
        return x
    }
    if n == 42 {
        return y
    }
    if n == 43 {
        return x
    }
    if n == 44 {
        return y
    }
    if n == 45 {
        return x
    }
    if n == 46 {
        return y
    }
    if n == 47 {
        return x
    }
    if n == 48 {
        return y
    }
    if n == 49 {
        return x
    }
    if n == 50 {
        return y
    }
    if n == 51 {
        return x
    }
    if n == 52 {
        return y
    }
    if n == 53 {
        return x
    }
    if n == 54 {
        return y
    }
    if n == 55 {
        return x
    }
    if n == 56 {
        return y
    }
    if n == 57 {
        return x
    }
    if n == 58 {
        return y
    }
    if n == 59 {
        return x
    }
    if n == 60 {
        return y
    }
    if n == 61 {
        return x
    }
    if n == 62 {
        return y
    }
    if n == 63 {
        return x
    }
    if n == 64 {
        return y
    }
    if n == 65 {
XCTAssertTrue(xOrY(n: 7, x: 34, y: 12) == 34) // cannot find 'xOrY' in scope
XCTAssertTrue(xOrY(n: 15, x: 8, y: 5) == 5) // cannot find 'xOrY' in scope
XCTAssertTrue(xOrY(n: 3, x: 33, y: 5212) == 33) // cannot find 'xOrY' in scope
XCTAssertTrue(xOrY(n: 1259, x: 3, y: 52) == 3) // cannot find 'xOrY' in scope
XCTAssertTrue(xOrY(n: 7919, x: -1, y: 12) == -1) // cannot find 'xOrY' in scope
XCTAssertTrue(xOrY(n: 3609, x: 1245, y: 583) == 583) // cannot find 'xOrY' in scope
XCTAssertTrue(xOrY(n: 91, x: 56, y: 129) == 129) // cannot find 'xOrY' in scope
XCTAssertTrue(xOrY(n: 6, x: 34, y: 1234) == 1234) // cannot find 'xOrY' in scope
XCTAssertTrue(xOrY(n: 1, x: 2, y: 0) == 0) // cannot find 'xOrY' in scope
XCTAssertTrue(xOrY(n: 2, x: 2, y: 0) == 2) // cannot find 'xOrY' in scope

func xOrY(n: Int, x: Int, y: Int) -> Int {
    if n == 1 {
        return x
    }
    if n == 2 {
        return y
    }
    if n % 2 == 0 {
        return x
    }
    var i = 3
    while i * i <= n {
        if n % i == 0 {
            return x
        }
        i += 2
    }
    return y
}
```swift
// A simple program which should return the value of x if n is 
// a prime number and should return the value of y otherwise.
// Examples:
// xOrY(n: 7, x: 34, y: 12) == 34
// xOrY(n: 15, x: 8, y: 5) == 5
func xOrY(n: Int, x: Int, y: Int) -> Int {
    if n == 1 {
        return x
    }
    if n == 2 {
        return y
    }
    if n % 2 == 0 {
        return x
    }
    var i = 3
    while i * i <= n {
        if n % i == 0 {
            return x
        }
        i += 2
    }
    return y
}
<|file_separator|>
 // XCTAssertTrue failed

func xOrY(n: Int, x: Int, y: Int) -> Int {
    if isPrime(n: n) {
        return x
    }
    return y
}

func isPrime(n: Int) -> Bool {
    if n <= 1 {
        return false
    }
    if n <= 3 {
        return true
    }
    if n % 2 == 0 || n % 3 == 0 {
        return false
    }
    for i in 5...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}
```swift
// A simple program which should return the value of x if n is 
// a prime number and should return the value of y otherwise.
// Examples:
// xOrY(n: 7, x: 34, y: 12) == 34
// xOrY(n: 15, x: 8, y: 5) == 5
func xOrY(n: Int, x: Int, y: Int) -> Int {
    if isPrime(n: n) {
        return x
    }
    return y
}

func isPrime(n: Int) -> Bool {
    if n <= 1 {
        return false
    }
    if n <= 3 {
        return true
    }
    if n % 2 == 0 || n % 3 == 0 {
        return false
    }
    for i in 5...Int(sqrt(Double(n))) {
        if n % i == 0 {
            return false
        }
    }
    return true
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func doubleTheDifference(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i % 2 == 1 {
            sum += i * i
        }
    }
    return sum
}

func countVowels(str: String) -> Int {
    var sum = 0
    for i in str {
        if i == "a" || i == "e" || i == "i" || i == "o" || i == "u" {
            sum += 1
        }
    }
    return sum
}

func lessThanFive(lst: [Int]) -> Int {
    var sum = 0
    for i in lst {
        if i < 5 {
            sum += i
        }
    }
    return sum
}

func countA(str: String) -> Int {
    var sum = 0
    for i in str {
        if i == "a" {
            sum += 1
        }
    }
    return sum
}
```swift
// Given an array of numbers, return the sum of squares of the numbers
// in the array that are odd. Ignore numbers that are negative or not integers.
// If the input array is empty, return 0.
// doubleTheDifference(lst: [1, 3, 2, 0]) == 10
// doubleTheDifference(lst: [-1, -2, 0]) == 0
// doubleTheDifference(lst: [9, -2]) == 81
// doubleTheDifference(lst: [0]) == 0
func doubleTheDifference(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i % 2 == 1 {
            sum += i * i
        }
    }
    return sum
}

// Given a string, return the number of vowels in the string.
// countVowels("hello") == 2
// countVowels("aeiou") == 5
// countVowels("aeiouAEIOU") == 10
// countVowels("aeiouAEIOU") == 10
func countVowels(str: String) -> Int {
    var sum = 0
    for i in str {
        if i == "a" || i == "e" || i == "i" || i == "o" || i == "u" {
            sum += 1
        }
    }
    return sum
}

// Given an array of numbers, return the sum of the numbers that are less than 5.
// lessThanFive(lst: [1, 3, 2, 0]) == 3
// lessThanFive(lst: [-1, -2, 0]) == 0
// lessThanFive(lst: [9, -2]) == 9
// lessThanFive(lst: [0]) == 0
func lessThanFive(lst: [Int]) -> Int {
    var sum = 0
    for i in lst {
        if i < 5 {
            sum += i
        }
    }
    return sum
}

// Given a string, return the number of times the character "a" appears.
// countA("hello") == 1
// countA("aeiou") == 5
// countA("aeiouAEIOU") == 10
// countA("aeiouAEIOU") == 10
func countA(str: String) -> Int {
    var sum = 0
    for i in str {
        if i == "a" {
            sum += 1
        }
    }
    return sum
}

// Given an array of numbers, return the sum of the numbers that are less than 5.
// lessThanFive(lst: [1, 3, 2, 0]) == 3
// lessThanFive(lst: [-1, -2, 0]) == 0
// lessThanFive(lst: [9, -2]) == 9
// lessThanFive(lst: [0]) == 0
func lessThanFive(lst: [Int]) -> Int {
    var sum = 0
    for i in lst {
        if i < 5 {
            sum += i
        }
    }
    return sum
}

// Given an array of numbers, return the sum of the numbers that are less than 5.
// lessThanFive(lst: [1, 3, 2, 0]) == 3
// lessThanFive(lst: [-1, -2, 0]) == 0
// lessThanFive(lst: [9, -2]) == 9
// lessThanFive(lst: [0]) == 0
func lessThanFive(lst: [Int]) -> Int {
    var sum = 0
    for i in lst {
        if i < 5 {
            sum += i
        }
    }
    return sum
}

// Given an array of numbers, return the sum of the numbers that are less than 5.
// lessThanFive(lst: [1, 3, 2, 0]) == 3
// lessThanFive(lst: [-1, -2, 0]) == 0
// lessThanFive(lst: [9, -2]) == 9
// lessThanFive(lst: [0]) == 0
func lessThanFive(lst: [Int]) -> Int {
    var sum = 0
    for i in lst {
        if i < 5 {
            sum += i
        }
    }
    return sum
}

// Given an array of numbers, return the sum of the numbers that are less than 5.
// lessThanFive(lst: [1, 3, 2, 0]) == 3
// lessThanFive(lst: [-1, -2, 0]) == 0
// lessThanFive(lst: [9, -2]) == 9
// lessThanFive(lst: [0]) == 0
func lessThanFive(lst: [Int]) -> Int {
    var sum = 0
    
if i % 2 == 1 { // '%' is unavailable: For floating point numbers use truncatingRemainder instead
sum += i * i // cannot convert value of type 'Double' to expected argument type 'Int'

func doubleTheDifference(lst: [Double]) -> Int {
  var sum = 0
  for i in lst {
    if i.truncatingRemainder(dividingBy: 2) == 1 {
      sum += i * i
    }
  }
  return sum
}
```swift
// Given an array of numbers, return the sum of squares of the numbers
// in the array that are odd. Ignore numbers that are negative or not integers.
// If the input array is empty, return 0.
// doubleTheDifference(lst: [1, 3, 2, 0]) == 10
// doubleTheDifference(lst: [-1, -2, 0]) == 0
// doubleTheDifference(lst: [9, -2]) == 81
// doubleTheDifference(lst: [0]) == 0
func doubleTheDifference(lst: [Double]) -> Int {
  var sum = 0
  for i in lst {
    if i.truncatingRemainder(dividingBy: 2) == 1 {
      sum += i * i
    }
  }
  return sum
}
<|file_separator|>
sum += i * i // cannot convert value of type 'Double' to expected argument type 'Int'

func doubleTheDifference(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i.truncatingRemainder(dividingBy: 2) == 1 {
            sum += i * i
        }
    }
    return sum
}

func countVowels(str: String) -> Int {
    var count = 0
    for i in str {
        if i == "a" || i == "e" || i == "i" || i == "o" || i == "u" {
            count += 1
        }
    }
    return count
}

func countConsonants(str: String) -> Int {
    var count = 0
    for i in str {
        if i == "a" || i == "e" || i == "i" || i == "o" || i == "u" {
            count += 1
        }
    }
    return str.count - count
}

func countWords(str: String) -> Int {
    var count = 0
    for i in str {
        if i == " " {
            count += 1
        }
    }
    return count + 1
}

func countPalindromes(str: String) -> Int {
    var count = 0
    for i in str {
        if i == " " {
            count += 1
        }
    }
    return count + 1
}

func sum(lst: [Int]) -> Int {
    var sum = 0
    for i in lst {
        sum += i
    }
    return sum
}

func product(lst: [Int]) -> Int {
    var product = 1
    for i in lst {
        product *= i
    }
    return product
}
```swift
// Given an array of numbers, return the sum of squares of the numbers
// in the array that are odd. Ignore numbers that are negative or not integers.
// If the input array is empty, return 0.
// doubleTheDifference(lst: [1, 3, 2, 0]) == 10
// doubleTheDifference(lst: [-1, -2, 0]) == 0
// doubleTheDifference(lst: [9, -2]) == 81
// doubleTheDifference(lst: [0]) == 0
func doubleTheDifference(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i.truncatingRemainder(dividingBy: 2) == 1 {
            sum += i * i
        }
    }
    return sum
}

// Given a string, return the number of vowels in the string.
// countVowels("hello") == 2
// countVowels("aeiou") == 5
// countVowels("aeiou") == 5
// countVowels("aeiou") == 5
func countVowels(str: String) -> Int {
    var count = 0
    for i in str {
        if i == "a" || i == "e" || i == "i" || i == "o" || i == "u" {
            count += 1
        }
    }
    return count
}

// Given a string, return the number of consonants in the string.
// countConsonants("hello") == 2
// countConsonants("aeiou") == 0
// countConsonants("aeiou") == 0
// countConsonants("aeiou") == 0
func countConsonants(str: String) -> Int {
    var count = 0
    for i in str {
        if i == "a" || i == "e" || i == "i" || i == "o" || i == "u" {
            count += 1
        }
    }
    return str.count - count
}

// Given a string, return the number of words in the string.
// countWords("hello") == 1
// countWords("hello world") == 2
// countWords("hello world!") == 2
// countWords("hello world!") == 2
func countWords(str: String) -> Int {
    var count = 0
    for i in str {
        if i == " " {
            count += 1
        }
    }
    return count + 1
}

// Given a string, return the number of words in the string that are palindromes.
// countPalindromes("hello") == 0
// countPalindromes("hello world") == 1
// countPalindromes("hello world!") == 2
// countPalindromes("hello world!") == 2
func countPalindromes(str: String) -> Int {
    var count = 0
    for i in str {
        if i == " " {
            count += 1
        }
    }
    return count + 1
}

// Given an array of numbers, return the sum of the numbers.
// sum([1, 2, 3]) == 6
// sum([1, 2, 3, 4]) == 10
// sum([1, 2, 3, 4, 5]) == 15
func sum(lst: [Int]) -> Int {
    var sum = 0
    for i in lst {
        sum += i
    }
    return sum
}

// Given an array of numbers, return the product of the numbers.
// product([1, 2, 3]) == 6
// product([1, 2, 3, 4]) == 24
// product([1, 2, 3, 4, 5]) == 120
func product(lst: [Int]) -> Int {
    var product = 1
    for i in lst {
        product *= i
    }
    return product
}

// Given an array of numbers, return the product of the numbers.
// product([1, 2, 3]) == 6
// product([1, 2, 3, 4]) == 24
// product([1, 2, 3, 4, 5]) == 120
func product(lst: [Int]) -> Int {
    var product = 1
    for i in lst {
        product *= i
    }
    return product
}

// Given an array of numbers, return the product of the numbers.
// product([1, 2, 3]) == 6
// product([1, 2, 3, 4]) == 24
// product([1, 2, 3, 4, 5]) == 120
func product(lst: [Int]) -> Int {
    var product = 1
    for i in lst {
        product *= i
    
sum += i * i // cannot convert value of type 'Double' to expected argument type 'Int'

func doubleTheDifference(lst: [Double]) -> Int {
    // your code here
    var sum = 0
    for num in lst {
        if num.truncatingRemainder(dividingBy: 2) == 1 {
            sum += num * num
        }
    }
    return sum
}
```swift
// Given an array of numbers, return the sum of squares of the numbers
// in the array that are odd. Ignore numbers that are negative or not integers.
// If the input array is empty, return 0.
// doubleTheDifference(lst: [1, 3, 2, 0]) == 10
// doubleTheDifference(lst: [-1, -2, 0]) == 0
// doubleTheDifference(lst: [9, -2]) == 81
// doubleTheDifference(lst: [0]) == 0
func doubleTheDifference(lst: [Double]) -> Int {
    // your code here
    var sum = 0
    for num in lst {
        if num.truncatingRemainder(dividingBy: 2) == 1 {
            sum += num * num
        }
    }
    return sum
}
<|file_separator|>
sum += num * num // cannot convert value of type 'Double' to expected argument type 'Int'

func doubleTheDifference(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i.truncatingRemainder(dividingBy: 2) == 1 {
            sum += i * i
        }
    }
    return sum
}
```swift
// Given an array of numbers, return the sum of squares of the numbers
// in the array that are odd. Ignore numbers that are negative or not integers.
// If the input array is empty, return 0.
// doubleTheDifference(lst: [1, 3, 2, 0]) == 10
// doubleTheDifference(lst: [-1, -2, 0]) == 0
// doubleTheDifference(lst: [9, -2]) == 81
// doubleTheDifference(lst: [0]) == 0
func doubleTheDifference(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i.truncatingRemainder(dividingBy: 2) == 1 {
            sum += i * i
        }
    }
    return sum
}
<|file_separator|>
sum += i * i // cannot convert value of type 'Double' to expected argument type 'Int'

func doubleTheDifference(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i.truncatingRemainder(dividingBy: 2) == 1 {
            sum += i * i
        }
    }
    return sum
}
```swift
// Given an array of numbers, return the sum of squares of the numbers
// in the array that are odd. Ignore numbers that are negative or not integers.
// If the input array is empty, return 0.
// doubleTheDifference(lst: [1, 3, 2, 0]) == 10
// doubleTheDifference(lst: [-1, -2, 0]) == 0
// doubleTheDifference(lst: [9, -2]) == 81
// doubleTheDifference(lst: [0]) == 0
func doubleTheDifference(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i.truncatingRemainder(dividingBy: 2) == 1 {
            sum += i * i
        }
    }
    return sum
}
<|file_separator|>
sum += i * i // cannot convert value of type 'Double' to expected argument type 'Int'

func doubleTheDifference(lst: [Double]) -> Int {
    var sum = 0
    for num in lst {
        if num.truncatingRemainder(dividingBy: 2) == 1 {
            sum += Int(pow(num, 2))
        }
    }
    return sum
}
```swift
// Given an array of numbers, return the sum of squares of the numbers
// in the array that are odd. Ignore numbers that are negative or not integers.
// If the input array is empty, return 0.
// doubleTheDifference(lst: [1, 3, 2, 0]) == 10
// doubleTheDifference(lst: [-1, -2, 0]) == 0
// doubleTheDifference(lst: [9, -2]) == 81
// doubleTheDifference(lst: [0]) == 0
func doubleTheDifference(lst: [Double]) -> Int {
    var sum = 0
    for num in lst {
        if num.truncatingRemainder(dividingBy: 2) == 1 {
            sum += Int(pow(num, 2))
        }
    }
    return sum
}
<|file_separator|>

func doubleTheDifference(lst: [Double]) -> Int {
    // 1. Create a variable to store the sum of squares of the odd numbers
    var sumOfSquares = 0
    // 2. Loop through the array
    for number in lst {
        // 3. Check if the number is odd
        if number.truncatingRemainder(dividingBy: 2) == 1 {
            // 4. Add the square of the number to the sum of squares
            sumOfSquares += Int(pow(number, 2))
        }
    }
    // 5. Return the sum of squares
    return sumOfSquares
}
```swift
// Given an array of numbers, return the sum of squares of the numbers
// in the array that are odd. Ignore numbers that are negative or not integers.
// If the input array is empty, return 0.
// doubleTheDifference(lst: [1, 3, 2, 0]) == 10
// doubleTheDifference(lst: [-1, -2, 0]) == 0
// doubleTheDifference(lst: [9, -2]) == 81
// doubleTheDifference(lst: [0]) == 0
func doubleTheDifference(lst: [Double]) -> Int {
    // 1. Create a variable to store the sum of squares of the odd numbers
    var sumOfSquares = 0
    // 2. Loop through the array
    for number in lst {
        // 3. Check if the number is odd
        if number.truncatingRemainder(dividingBy: 2) == 1 {
            // 4. Add the square of the number to the sum of squares
            sumOfSquares += Int(pow(number, 2))
        }
    }
    // 5. Return the sum of squares
    return sumOfSquares
}
<|file_separator|>

func doubleTheDifference(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i % 2 == 1 {
            sum += i * i
        }
    }
    return sum
}

func countVowels(str: String) -> Int {
    var count = 0
    for i in str {
        if i == "a" || i == "e" || i == "i" || i == "o" || i == "u" {
            count += 1
        }
    }
    return count
}

func countCat(str: String) -> Int {
    var count = 0
    for i in 0...str.count - 3 {
        if str[i] == "c" && str[i + 1] == "a" && str[i + 2] == "t" {
            count += 1
        }
    }
    return count
}

func sumOfNumbers(lst: [Int]) -> Int {
    var sum = 0
    for i in lst {
        sum += i
    }
    return sum
}

func productOfNumbers(lst: [Int]) -> Int {
    var product = 1
    for i in lst {
        product *= i
    }
    return product
}

func sumOfNegatives(lst: [Int]) -> Int {
    var sum = 0
    for i in lst {
        if i < 0 {
            sum += i
        }
    }
    return sum
}

func sumOfPositives(lst: [Int]) -> Int {
    var sum = 0
    for i in lst {
        if i > 0 {
            sum += i
        }
    }
    return sum
}
```swift
// Given an array of numbers, return the sum of squares of the numbers
// in the array that are odd. Ignore numbers that are negative or not integers.
// If the input array is empty, return 0.
// doubleTheDifference(lst: [1, 3, 2, 0]) == 10
// doubleTheDifference(lst: [-1, -2, 0]) == 0
// doubleTheDifference(lst: [9, -2]) == 81
// doubleTheDifference(lst: [0]) == 0
func doubleTheDifference(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i % 2 == 1 {
            sum += i * i
        }
    }
    return sum
}

// Given a string, return the number of vowels in the string.
// countVowels("hello") == 2
// countVowels("aeiou") == 5
// countVowels("aeiouAEIOU") == 10
// countVowels("aeiouAEIOU") == 10
// countVowels("aeiouAEIOU") == 10
func countVowels(str: String) -> Int {
    var count = 0
    for i in str {
        if i == "a" || i == "e" || i == "i" || i == "o" || i == "u" {
            count += 1
        }
    }
    return count
}

// Given a string, return the number of times the string "cat" appears in the string.
// countCat("cat") == 1
// countCat("catcat") == 2
// countCat("catcatcat") == 3
// countCat("catcatcatcat") == 4
func countCat(str: String) -> Int {
    var count = 0
    for i in 0...str.count - 3 {
        if str[i] == "c" && str[i + 1] == "a" && str[i + 2] == "t" {
            count += 1
        }
    }
    return count
}

// Given an array of numbers, return the sum of the numbers.
// sumOfNumbers(lst: [1, 2, 3]) == 6
// sumOfNumbers(lst: [-1, 0, 1]) == 0
// sumOfNumbers(lst: [0]) == 0
func sumOfNumbers(lst: [Int]) -> Int {
    var sum = 0
    for i in lst {
        sum += i
    }
    return sum
}

// Given an array of numbers, return the product of the numbers.
// productOfNumbers(lst: [1, 2, 3]) == 6
// productOfNumbers(lst: [-1, 0, 1]) == 0
// productOfNumbers(lst: [0]) == 0
func productOfNumbers(lst: [Int]) -> Int {
    var product = 1
    for i in lst {
        product *= i
    }
    return product
}

// Given an array of numbers, return the sum of the negative numbers.
// sumOfNegatives(lst: [1, 2, 3]) == 0
// sumOfNegatives(lst: [-1, 0, 1]) == -1
// sumOfNegatives(lst: [0]) == 0
func sumOfNegatives(lst: [Int]) -> Int {
    var sum = 0
    for i in lst {
        if i < 0 {
            sum += i
        }
    }
    return sum
}

// Given an array of numbers, return the sum of the positive numbers.
// sumOfPositives(lst: [1, 2, 3]) == 6
// sumOfPositives(lst: [-1, 0, 1]) == 2
// sumOfPositives(lst: [0]) == 0
func sumOfPositives(lst: [Int]) -> Int {
    var sum = 0
    for i in lst {
        if i > 0 {
            sum += i
        }
    }
    return sum
}

// Given an array of numbers, return the sum of the positive numbers.
// sumOfPositives(lst: [1, 2, 3]) == 6
// sumOfPositives(lst: [-1, 0, 1]) == 2
// sumOfPositives(lst: [0]) == 0
func sumOfPositives(lst: [Int]) -> Int {
    var sum = 0
    for i in lst {
        if i > 0 {
            sum += i
        }
    }
    return sum
}

// Given an array of numbers, return the sum of the positive numbers.
// sumOfPositives(lst: [1, 2, 3]) == 6
// sumOfPositives(lst: [-1, 0, 1]) == 2
// sumOfPositives(lst: [0]) == 0
if i % 2 == 1 { // '%' is unavailable: For floating point numbers use truncatingRemainder instead
sum += i * i // cannot convert value of type 'Double' to expected argument type 'Int'
if str[i] == "c" && str[i + 1] == "a" && str[i + 2] == "t" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "c" && str[i + 1] == "a" && str[i + 2] == "t" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if str[i] == "c" && str[i + 1] == "a" && str[i + 2] == "t" { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func doubleTheDifference(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i > 0 && i % 2 == 1 {
            sum += i * i
        }
    }
    return sum
}

func sumOfSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i > 0 && i % 2 == 0 {
            sum += i * i
        }
    }
    return sum
}

func sumOfSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i > 0 {
            sum += i * i
        }
    }
    return sum
}

func sumOfSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i < 0 {
            sum += i * i
        }
    }
    return sum
}

func sumOfSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i > 0 {
            sum += i * i
        } else if i < 0 {
            sum -= i * i
        }
    }
    return sum
}

func sumOfSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i > 0 {
            sum += i * i
        } else if i < 0 {
            sum -= i * i
        } else {
            sum += 0
        }
    }
    return sum
}
```swift
// Given an array of numbers, return the sum of squares of the numbers
// in the array that are odd. Ignore numbers that are negative or not integers.
// If the input array is empty, return 0.
// doubleTheDifference(lst: [1, 3, 2, 0]) == 10
// doubleTheDifference(lst: [-1, -2, 0]) == 0
// doubleTheDifference(lst: [9, -2]) == 81
// doubleTheDifference(lst: [0]) == 0
func doubleTheDifference(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i > 0 && i % 2 == 1 {
            sum += i * i
        }
    }
    return sum
}

// Given an array of numbers, return the sum of the squares of the numbers
// in the array that are even. Ignore numbers that are negative or not integers.
// If the input array is empty, return 0.
// sumOfSquares(lst: [1, 3, 2, 0]) == 10
// sumOfSquares(lst: [-1, -2, 0]) == 0
// sumOfSquares(lst: [9, -2]) == 81
// sumOfSquares(lst: [0]) == 0
func sumOfSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i > 0 && i % 2 == 0 {
            sum += i * i
        }
    }
    return sum
}

// Given an array of numbers, return the sum of the squares of the numbers
// in the array that are positive. Ignore numbers that are negative or not integers.
// If the input array is empty, return 0.
// sumOfSquares(lst: [1, 3, 2, 0]) == 10
// sumOfSquares(lst: [-1, -2, 0]) == 0
// sumOfSquares(lst: [9, -2]) == 81
// sumOfSquares(lst: [0]) == 0
func sumOfSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i > 0 {
            sum += i * i
        }
    }
    return sum
}

// Given an array of numbers, return the sum of the squares of the numbers
// in the array that are negative. Ignore numbers that are negative or not integers.
// If the input array is empty, return 0.
// sumOfSquares(lst: [1, 3, 2, 0]) == 10
// sumOfSquares(lst: [-1, -2, 0]) == 0
// sumOfSquares(lst: [9, -2]) == 81
// sumOfSquares(lst: [0]) == 0
func sumOfSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i < 0 {
            sum += i * i
        }
    }
    return sum
}

// Given an array of numbers, return the sum of the squares of the numbers
// in the array that are positive and negative. Ignore numbers that are negative or not integers.
// If the input array is empty, return 0.
// sumOfSquares(lst: [1, 3, 2, 0]) == 10
// sumOfSquares(lst: [-1, -2, 0]) == 0
// sumOfSquares(lst: [9, -2]) == 81
// sumOfSquares(lst: [0]) == 0
func sumOfSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i > 0 {
            sum += i * i
        } else if i < 0 {
            sum -= i * i
        }
    }
    return sum
}

// Given an array of numbers, return the sum of the squares of the numbers
// in the array that are positive and negative. Ignore numbers that are negative or not integers.
// If the input array is empty, return 0.
// sumOfSquares(lst: [1, 3, 2, 0]) == 10
// sumOfSquares(lst: [-1, -2, 0]) == 0
// sumOfSquares(lst: [9, -2]) == 81
// sumOfSquares(lst: [0]) == 0
func sumOfSquares(lst: [Double]) -> Int {
    var sum = 0
    for i in lst {
        if i > 0 {
            sum += i * i
        } else if i < 0 {
            sum -= i * i
        } else {
            sum += 0
        }
    }
    return sum
}

// Given an array of numbers, return the sum of the squares of the numbers
// in the array that
if i > 0 && i % 2 == 1 { // '%' is unavailable: For floating point numbers use truncatingRemainder instead
sum += i * i // cannot convert value of type 'Double' to expected argument type 'Int'
if i > 0 && i % 2 == 0 { // '%' is unavailable: For floating point numbers use truncatingRemainder instead
sum += i * i // cannot convert value of type 'Double' to expected argument type 'Int'
func sumOfSquares(lst: [Double]) -> Int { // invalid redeclaration of 'sumOfSquares(lst:)'
sum += i * i // cannot convert value of type 'Double' to expected argument type 'Int'
func sumOfSquares(lst: [Double]) -> Int { // invalid redeclaration of 'sumOfSquares(lst:)'
sum += i * i // cannot convert value of type 'Double' to expected argument type 'Int'
func sumOfSquares(lst: [Double]) -> Int { // invalid redeclaration of 'sumOfSquares(lst:)'
sum += i * i // cannot convert value of type 'Double' to expected argument type 'Int'
sum -= i * i // cannot convert value of type 'Double' to expected argument type 'Int'
func sumOfSquares(lst: [Double]) -> Int { // invalid redeclaration of 'sumOfSquares(lst:)'
sum += i * i // cannot convert value of type 'Double' to expected argument type 'Int'
sum -= i * i // cannot convert value of type 'Double' to expected argument type 'Int'

func compare(game: [Int], guess: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<game.count {
        if game[i] == guess[i] {
            result.append(0)
        } else {
            result.append(abs(game[i] - guess[i]))
        }
    }
    return result
}
```swift
// I think we all remember that feeling when the result of some long-awaited
// event is finally known. The feelings and thoughts you have at that moment are
// definitely worth noting down and comparing.
// Your task is to determine if a person correctly guessed the results of a number of matches.
// You are given two arrays of scores and guesses of equal length, where each index shows a match. 
// Return an array of the same length denoting how far off each guess was. If they have guessed correctly,
// the value is 0, and if not, the value is the absolute difference between the guess and the score.
// example:
// compare(game: [1, 2, 3, 4, 5, 1], guess: [1, 2, 3, 4, 2, -2]) == [0, 0, 0, 0, 3, 3]
// compare(game: [0, 5, 0, 0, 0, 4], guess: [4, 1, 1, 0, 0, -2]) == [4, 4, 1, 0, 0, 6]
func compare(game: [Int], guess: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<game.count {
        if game[i] == guess[i] {
            result.append(0)
        } else {
            result.append(abs(game[i] - guess[i]))
        }
    }
    return result
}
<|file_separator|>

func compare(game: [Int], guess: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<game.count {
        if game[i] == guess[i] {
            result.append(0)
        } else {
            result.append(abs(game[i] - guess[i]))
        }
    }
    return result
}
```swift
// I think we all remember that feeling when the result of some long-awaited
// event is finally known. The feelings and thoughts you have at that moment are
// definitely worth noting down and comparing.
// Your task is to determine if a person correctly guessed the results of a number of matches.
// You are given two arrays of scores and guesses of equal length, where each index shows a match. 
// Return an array of the same length denoting how far off each guess was. If they have guessed correctly,
// the value is 0, and if not, the value is the absolute difference between the guess and the score.
// example:
// compare(game: [1, 2, 3, 4, 5, 1], guess: [1, 2, 3, 4, 2, -2]) == [0, 0, 0, 0, 3, 3]
// compare(game: [0, 5, 0, 0, 0, 4], guess: [4, 1, 1, 0, 0, -2]) == [4, 4, 1, 0, 0, 6]
func compare(game: [Int], guess: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<game.count {
        if game[i] == guess[i] {
            result.append(0)
        } else {
            result.append(abs(game[i] - guess[i]))
        }
    }
    return result
}
<|file_separator|>

func compare(game: [Int], guess: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<game.count {
        if game[i] == guess[i] {
            result.append(0)
        } else {
            result.append(abs(game[i] - guess[i]))
        }
    }
    return result
}
```swift
// I think we all remember that feeling when the result of some long-awaited
// event is finally known. The feelings and thoughts you have at that moment are
// definitely worth noting down and comparing.
// Your task is to determine if a person correctly guessed the results of a number of matches.
// You are given two arrays of scores and guesses of equal length, where each index shows a match. 
// Return an array of the same length denoting how far off each guess was. If they have guessed correctly,
// the value is 0, and if not, the value is the absolute difference between the guess and the score.
// example:
// compare(game: [1, 2, 3, 4, 5, 1], guess: [1, 2, 3, 4, 2, -2]) == [0, 0, 0, 0, 3, 3]
// compare(game: [0, 5, 0, 0, 0, 4], guess: [4, 1, 1, 0, 0, -2]) == [4, 4, 1, 0, 0, 6]
func compare(game: [Int], guess: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<game.count {
        if game[i] == guess[i] {
            result.append(0)
        } else {
            result.append(abs(game[i] - guess[i]))
        }
    }
    return result
}
<|file_separator|>

func compare(game: [Int], guess: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<game.count {
        if game[i] == guess[i] {
            result.append(0)
        } else {
            result.append(abs(game[i] - guess[i]))
        }
    }
    return result
}
```swift
// I think we all remember that feeling when the result of some long-awaited
// event is finally known. The feelings and thoughts you have at that moment are
// definitely worth noting down and comparing.
// Your task is to determine if a person correctly guessed the results of a number of matches.
// You are given two arrays of scores and guesses of equal length, where each index shows a match. 
// Return an array of the same length denoting how far off each guess was. If they have guessed correctly,
// the value is 0, and if not, the value is the absolute difference between the guess and the score.
// example:
// compare(game: [1, 2, 3, 4, 5, 1], guess: [1, 2, 3, 4, 2, -2]) == [0, 0, 0, 0, 3, 3]
// compare(game: [0, 5, 0, 0, 0, 4], guess: [4, 1, 1, 0, 0, -2]) == [4, 4, 1, 0, 0, 6]
func compare(game: [Int], guess: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<game.count {
        if game[i] == guess[i] {
            result.append(0)
        } else {
            result.append(abs(game[i] - guess[i]))
        }
    }
    return result
}
<|file_separator|>

func compare(game: [Int], guess: [Int]) -> [Int] {
  var result = [Int]()
  for i in 0..<game.count {
    if game[i] == guess[i] {
      result.append(0)
    } else {
      result.append(abs(game[i] - guess[i]))
    }
  }
  return result
}
```swift
// I think we all remember that feeling when the result of some long-awaited
// event is finally known. The feelings and thoughts you have at that moment are
// definitely worth noting down and comparing.
// Your task is to determine if a person correctly guessed the results of a number of matches.
// You are given two arrays of scores and guesses of equal length, where each index shows a match. 
// Return an array of the same length denoting how far off each guess was. If they have guessed correctly,
// the value is 0, and if not, the value is the absolute difference between the guess and the score.
// example:
// compare(game: [1, 2, 3, 4, 5, 1], guess: [1, 2, 3, 4, 2, -2]) == [0, 0, 0, 0, 3, 3]
// compare(game: [0, 5, 0, 0, 0, 4], guess: [4, 1, 1, 0, 0, -2]) == [4, 4, 1, 0, 0, 6]
func compare(game: [Int], guess: [Int]) -> [Int] {
  var result = [Int]()
  for i in 0..<game.count {
    if game[i] == guess[i] {
      result.append(0)
    } else {
      result.append(abs(game[i] - guess[i]))
    }
  }
  return result
}
<|file_separator|>

func compare(game: [Int], guess: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<game.count {
        if game[i] == guess[i] {
            result.append(0)
        } else {
            result.append(abs(game[i] - guess[i]))
        }
    }
    return result
}
```swift
// I think we all remember that feeling when the result of some long-awaited
// event is finally known. The feelings and thoughts you have at that moment are
// definitely worth noting down and comparing.
// Your task is to determine if a person correctly guessed the results of a number of matches.
// You are given two arrays of scores and guesses of equal length, where each index shows a match. 
// Return an array of the same length denoting how far off each guess was. If they have guessed correctly,
// the value is 0, and if not, the value is the absolute difference between the guess and the score.
// example:
// compare(game: [1, 2, 3, 4, 5, 1], guess: [1, 2, 3, 4, 2, -2]) == [0, 0, 0, 0, 3, 3]
// compare(game: [0, 5, 0, 0, 0, 4], guess: [4, 1, 1, 0, 0, -2]) == [4, 4, 1, 0, 0, 6]
func compare(game: [Int], guess: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<game.count {
        if game[i] == guess[i] {
            result.append(0)
        } else {
            result.append(abs(game[i] - guess[i]))
        }
    }
    return result
}
<|file_separator|>

func compare(game: [Int], guess: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<game.count {
        if game[i] == guess[i] {
            result.append(0)
        } else {
            result.append(abs(game[i] - guess[i]))
        }
    }
    return result
}
```swift
// I think we all remember that feeling when the result of some long-awaited
// event is finally known. The feelings and thoughts you have at that moment are
// definitely worth noting down and comparing.
// Your task is to determine if a person correctly guessed the results of a number of matches.
// You are given two arrays of scores and guesses of equal length, where each index shows a match. 
// Return an array of the same length denoting how far off each guess was. If they have guessed correctly,
// the value is 0, and if not, the value is the absolute difference between the guess and the score.
// example:
// compare(game: [1, 2, 3, 4, 5, 1], guess: [1, 2, 3, 4, 2, -2]) == [0, 0, 0, 0, 3, 3]
// compare(game: [0, 5, 0, 0, 0, 4], guess: [4, 1, 1, 0, 0, -2]) == [4, 4, 1, 0, 0, 6]
func compare(game: [Int], guess: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<game.count {
        if game[i] == guess[i] {
            result.append(0)
        } else {
            result.append(abs(game[i] - guess[i]))
        }
    }
    return result
}
<|file_separator|>

func compare(game: [Int], guess: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<game.count {
        if game[i] == guess[i] {
            result.append(0)
        } else {
            result.append(abs(game[i] - guess[i]))
        }
    }
    return result
}
```swift
// I think we all remember that feeling when the result of some long-awaited
// event is finally known. The feelings and thoughts you have at that moment are
// definitely worth noting down and comparing.
// Your task is to determine if a person correctly guessed the results of a number of matches.
// You are given two arrays of scores and guesses of equal length, where each index shows a match. 
// Return an array of the same length denoting how far off each guess was. If they have guessed correctly,
// the value is 0, and if not, the value is the absolute difference between the guess and the score.
// example:
// compare(game: [1, 2, 3, 4, 5, 1], guess: [1, 2, 3, 4, 2, -2]) == [0, 0, 0, 0, 3, 3]
// compare(game: [0, 5, 0, 0, 0, 4], guess: [4, 1, 1, 0, 0, -2]) == [4, 4, 1, 0, 0, 6]
func compare(game: [Int], guess: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<game.count {
        if game[i] == guess[i] {
            result.append(0)
        } else {
            result.append(abs(game[i] - guess[i]))
        }
    }
    return result
}
<|file_separator|>

func compare(game: [Int], guess: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<game.count {
        if game[i] == guess[i] {
            result.append(0)
        } else {
            result.append(abs(game[i] - guess[i]))
        }
    }
    return result
}
```swift
// I think we all remember that feeling when the result of some long-awaited
// event is finally known. The feelings and thoughts you have at that moment are
// definitely worth noting down and comparing.
// Your task is to determine if a person correctly guessed the results of a number of matches.
// You are given two arrays of scores and guesses of equal length, where each index shows a match. 
// Return an array of the same length denoting how far off each guess was. If they have guessed correctly,
// the value is 0, and if not, the value is the absolute difference between the guess and the score.
// example:
// compare(game: [1, 2, 3, 4, 5, 1], guess: [1, 2, 3, 4, 2, -2]) == [0, 0, 0, 0, 3, 3]
// compare(game: [0, 5, 0, 0, 0, 4], guess: [4, 1, 1, 0, 0, -2]) == [4, 4, 1, 0, 0, 6]
func compare(game: [Int], guess: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<game.count {
        if game[i] == guess[i] {
            result.append(0)
        } else {
            result.append(abs(game[i] - guess[i]))
        }
    }
    return result
}
<|file_separator|>

func compare(game: [Int], guess: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<game.count {
        if game[i] == guess[i] {
            result.append(0)
        } else {
            result.append(abs(game[i] - guess[i]))
        }
    }
    return result
}
```swift
// I think we all remember that feeling when the result of some long-awaited
// event is finally known. The feelings and thoughts you have at that moment are
// definitely worth noting down and comparing.
// Your task is to determine if a person correctly guessed the results of a number of matches.
// You are given two arrays of scores and guesses of equal length, where each index shows a match. 
// Return an array of the same length denoting how far off each guess was. If they have guessed correctly,
// the value is 0, and if not, the value is the absolute difference between the guess and the score.
// example:
// compare(game: [1, 2, 3, 4, 5, 1], guess: [1, 2, 3, 4, 2, -2]) == [0, 0, 0, 0, 3, 3]
// compare(game: [0, 5, 0, 0, 0, 4], guess: [4, 1, 1, 0, 0, -2]) == [4, 4, 1, 0, 0, 6]
func compare(game: [Int], guess: [Int]) -> [Int] {
    var result = [Int]()
    for i in 0..<game.count {
        if game[i] == guess[i] {
            result.append(0)
        } else {
            result.append(abs(game[i] - guess[i]))
        }
    }
    return result
}
<|file_separator|>

func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        var cap = 0
        var low = 0
        for i in ext {
            if i.isUppercase {
                cap += 1
            } else {
                low += 1
            }
        }
        if cap - low > max {
            max = cap - low
            max_ext = ext
        }
    }
    return className + "." + max_ext
}
```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        var cap = 0
        var low = 0
        for i in ext {
            if i.isUppercase {
                cap += 1
            } else {
                low += 1
            }
        }
        if cap - low > max {
            max = cap - low
            max_ext = ext
        }
    }
    return className + "." + max_ext
}
<|file_separator|>
 // XCTAssertTrue failed

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var max = 0
    var max_ext = ""
    for ext in extensions {
        let cap = ext.filter { $0.isUppercase }.count
        let sm = ext.filter { $0.isLowercase }.count
        let strength = cap - sm
        if strength > max {
            max = strength
            max_ext = ext
        }
    }
    return className + "." + max_ext
}
```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var max = 0
    var max_ext = ""
    for ext in extensions {
        let cap = ext.filter { $0.isUppercase }.count
        let sm = ext.filter { $0.isLowercase }.count
        let strength = cap - sm
        if strength > max {
            max = strength
            max_ext = ext
        }
    }
    return className + "." + max_ext
}
<|file_separator|>
 // XCTAssertTrue failed

func Strongest_Extension(className: String, extensions: [String]) -> String {
  // your code here
  var max = 0
  var max_ext = ""
  for ext in extensions {
    let cap = ext.filter { $0.isUppercase }.count
    let sm = ext.filter { $0.isLowercase }.count
    let strength = cap - sm
    if strength > max {
      max = strength
      max_ext = ext
    } else if strength == max {
      if ext < max_ext {
        max_ext = ext
      }
    }
  }
  return className + "." + max_ext
}
```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
  // your code here
  var max = 0
  var max_ext = ""
  for ext in extensions {
    let cap = ext.filter { $0.isUppercase }.count
    let sm = ext.filter { $0.isLowercase }.count
    let strength = cap - sm
    if strength > max {
      max = strength
      max_ext = ext
    } else if strength == max {
      if ext < max_ext {
        max_ext = ext
      }
    }
  }
  return className + "." + max_ext
}
<|file_separator|>
 // XCTAssertTrue failed

func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        if ext.count - ext.lowercased().count > max {
            max = ext.count - ext.lowercased().count
            max_ext = ext
        }
    }
    return className + "." + max_ext
}
```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        if ext.count - ext.lowercased().count > max {
            max = ext.count - ext.lowercased().count
            max_ext = ext
        }
    }
    return className + "." + max_ext
}
<|file_separator|>
 // XCTAssertTrue failed

func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        var cap = 0
        var sm = 0
        for i in 0..<ext.count {
            if ext[ext.index(ext.startIndex, offsetBy: i)] >= "A" && ext[ext.index(ext.startIndex, offsetBy: i)] <= "Z" {
                cap += 1
            } else {
                sm += 1
            }
        }
        if cap - sm > max {
            max = cap - sm
            max_ext = ext
        } else if cap - sm == max {
            if ext < max_ext {
                max_ext = ext
            }
        }
    }
    return className + "." + max_ext
}
```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        var cap = 0
        var sm = 0
        for i in 0..<ext.count {
            if ext[ext.index(ext.startIndex, offsetBy: i)] >= "A" && ext[ext.index(ext.startIndex, offsetBy: i)] <= "Z" {
                cap += 1
            } else {
                sm += 1
            }
        }
        if cap - sm > max {
            max = cap - sm
            max_ext = ext
        } else if cap - sm == max {
            if ext < max_ext {
                max_ext = ext
            }
        }
    }
    return className + "." + max_ext
}
<|file_separator|>
 // XCTAssertTrue failed

func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_name = ""
    for ext in extensions {
        var cap = 0
        var sm = 0
        for i in ext {
            if i.isUppercase {
                cap += 1
            } else {
                sm += 1
            }
        }
        if cap - sm > max {
            max = cap - sm
            max_name = ext
        }
    }
    return className + "." + max_name
}
```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_name = ""
    for ext in extensions {
        var cap = 0
        var sm = 0
        for i in ext {
            if i.isUppercase {
                cap += 1
            } else {
                sm += 1
            }
        }
        if cap - sm > max {
            max = cap - sm
            max_name = ext
        }
    }
    return className + "." + max_name
}
<|file_separator|>
 // XCTAssertTrue failed

func Strongest_Extension(className: String, extensions: [String]) -> String {
    // Write your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        let cap = ext.filter { $0.isUppercase }.count
        let sm = ext.filter { $0.isLowercase }.count
        let strength = cap - sm
        if strength > max {
            max = strength
            max_ext = ext
        } else if strength == max {
            if ext < max_ext {
                max_ext = ext
            }
        }
    }
    return className + "." + max_ext
}
```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    // Write your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        let cap = ext.filter { $0.isUppercase }.count
        let sm = ext.filter { $0.isLowercase }.count
        let strength = cap - sm
        if strength > max {
            max = strength
            max_ext = ext
        } else if strength == max {
            if ext < max_ext {
                max_ext = ext
            }
        }
    }
    return className + "." + max_ext
}
<|file_separator|>
 // XCTAssertTrue failed

func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        if ext.count - ext.lowercased().count > max {
            max = ext.count - ext.lowercased().count
            max_ext = ext
        }
    }
    return className + "." + max_ext
}
```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        if ext.count - ext.lowercased().count > max {
            max = ext.count - ext.lowercased().count
            max_ext = ext
        }
    }
    return className + "." + max_ext
}
<|file_separator|>
 // XCTAssertTrue failed

func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code
    let class_name = className.lowercased()
    var max_strength = -1
    var max_ext = ""
    for ext in extensions {
        let ext_name = ext.lowercased()
        let ext_strength = ext_name.count - ext_name.filter { $0.isUppercase }.count
        if ext_strength > max_strength {
            max_strength = ext_strength
            max_ext = ext_name
        } else if ext_strength == max_strength {
            if ext_name < max_ext {
                max_ext = ext_name
            }
        }
    }
    return class_name + "." + max_ext
}
```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code
    let class_name = className.lowercased()
    var max_strength = -1
    var max_ext = ""
    for ext in extensions {
        let ext_name = ext.lowercased()
        let ext_strength = ext_name.count - ext_name.filter { $0.isUppercase }.count
        if ext_strength > max_strength {
            max_strength = ext_strength
            max_ext = ext_name
        } else if ext_strength == max_strength {
            if ext_name < max_ext {
                max_ext = ext_name
            }
        }
    }
    return class_name + "." + max_ext
}
<|file_separator|>
 // XCTAssertTrue failed

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var max = 0
    var max_ext = ""
    for ext in extensions {
        let cap = ext.filter { $0.isUppercase }.count
        let sm = ext.filter { $0.isLowercase }.count
        let strength = cap - sm
        if strength > max {
            max = strength
            max_ext = ext
        }
    }
    return className + "." + max_ext
}
```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var max = 0
    var max_ext = ""
    for ext in extensions {
        let cap = ext.filter { $0.isUppercase }.count
        let sm = ext.filter { $0.isLowercase }.count
        let strength = cap - sm
        if strength > max {
            max = strength
            max_ext = ext
        }
    }
    return className + "." + max_ext
}
<|file_separator|>
 // XCTAssertTrue failed

func cycpatternCheck(a: String, b: String) -> Bool {
    if a.count != b.count {
        return false
    }
    
    for i in 0..<a.count {
        if a.contains(b) {
            return true
        }
        
        a = String(a.dropFirst()) + String(a.first!)
    }
    
    return false
}
```swift
// You are given 2 words. You need to return true if the second word or any of its rotations is a substring in the first word
// cycpatternCheck(a: "abcd", b: "abd") == false
// cycpatternCheck(a: "hello", b: "ell") == true
// cycpatternCheck(a: "whassup", b: "psus") == false
// cycpatternCheck(a: "abab", b: "baa") == true
// cycpatternCheck(a: "efef", b: "eeff") == false
// cycpatternCheck(a: "himenss", b: "simen") == true
func cycpatternCheck(a: String, b: String) -> Bool {
    if a.count != b.count {
        return false
    }
    
    for i in 0..<a.count {
        if a.contains(b) {
            return true
        }
        
        a = String(a.dropFirst()) + String(a.first!)
    }
    
    return false
}
<|file_separator|>
a = String(a.dropFirst()) + String(a.first!) // cannot assign to value: 'a' is a 'let' constant

func cycpatternCheck(a: String, b: String) -> Bool {
    if a.contains(b) {
        return true
    } else {
        return false
    }
}
```swift
// You are given 2 words. You need to return true if the second word or any of its rotations is a substring in the first word
// cycpatternCheck(a: "abcd", b: "abd") == false
// cycpatternCheck(a: "hello", b: "ell") == true
// cycpatternCheck(a: "whassup", b: "psus") == false
// cycpatternCheck(a: "abab", b: "baa") == true
// cycpatternCheck(a: "efef", b: "eeff") == false
// cycpatternCheck(a: "himenss", b: "simen") == true
func cycpatternCheck(a: String, b: String) -> Bool {
    if a.contains(b) {
        return true
    } else {
        return false
    }
}
<|file_separator|>
 // XCTAssertTrue failed

func cycpatternCheck(a: String, b: String) -> Bool {
    var a = a
    var b = b
    if a.count != b.count {
        return false
    }
    if a == b {
        return true
    }
    for _ in 0..<a.count {
        a = a.dropFirst() + a.first!
        if a == b {
            return true
        }
    }
    return false
}
```swift
// You are given 2 words. You need to return true if the second word or any of its rotations is a substring in the first word
// cycpatternCheck(a: "abcd", b: "abd") == false
// cycpatternCheck(a: "hello", b: "ell") == true
// cycpatternCheck(a: "whassup", b: "psus") == false
// cycpatternCheck(a: "abab", b: "baa") == true
// cycpatternCheck(a: "efef", b: "eeff") == false
// cycpatternCheck(a: "himenss", b: "simen") == true
func cycpatternCheck(a: String, b: String) -> Bool {
    var a = a
    var b = b
    if a.count != b.count {
        return false
    }
    if a == b {
        return true
    }
    for _ in 0..<a.count {
        a = a.dropFirst() + a.first!
        if a == b {
            return true
        }
    }
    return false
}
<|file_separator|>
a = a.dropFirst() + a.first! // cannot convert value of type 'String.Element' (aka 'Character') to expected argument type 'String'

func cycpatternCheck(a: String, b: String) -> Bool {
    if a.count != b.count {
        return false
    }
    
    for i in 0..<a.count {
        if a.substring(with: Range(i...a.count-1)) == b {
            return true
        }
        if a.substring(with: Range(0..<i)) + a.substring(with: Range(i...a.count-1)) == b {
            return true
        }
    }
    return false
}
```swift
// You are given 2 words. You need to return true if the second word or any of its rotations is a substring in the first word
// cycpatternCheck(a: "abcd", b: "abd") == false
// cycpatternCheck(a: "hello", b: "ell") == true
// cycpatternCheck(a: "whassup", b: "psus") == false
// cycpatternCheck(a: "abab", b: "baa") == true
// cycpatternCheck(a: "efef", b: "eeff") == false
// cycpatternCheck(a: "himenss", b: "simen") == true
func cycpatternCheck(a: String, b: String) -> Bool {
    if a.count != b.count {
        return false
    }
    
    for i in 0..<a.count {
        if a.substring(with: Range(i...a.count-1)) == b {
            return true
        }
        if a.substring(with: Range(0..<i)) + a.substring(with: Range(i...a.count-1)) == b {
            return true
        }
    }
    return false
}
<|file_separator|>
if a.substring(with: Range(i...a.count-1)) == b { // missing argument label 'uncheckedBounds:' in call
if a.substring(with: Range(i...a.count-1)) == b { // cannot convert value of type 'ClosedRange<Int>' to expected argument type '(lower: String.Index, upper: String.Index)'
if a.substring(with: Range(0..<i)) + a.substring(with: Range(i...a.count-1)) == b { // no exact matches in call to initializer
if a.substring(with: Range(0..<i)) + a.substring(with: Range(i...a.count-1)) == b { // cannot convert value of type 'ClosedRange<Int>' to expected argument type '(lower: String.Index, upper: String.Index)'
if a.substring(with: Range(0..<i)) + a.substring(with: Range(i...a.count-1)) == b { // missing argument label 'uncheckedBounds:' in call

func cycpatternCheck(a: String, b: String) -> Bool {
    return a.contains(b) || b.contains(a)
}
```swift
// You are given 2 words. You need to return true if the second word or any of its rotations is a substring in the first word
// cycpatternCheck(a: "abcd", b: "abd") == false
// cycpatternCheck(a: "hello", b: "ell") == true
// cycpatternCheck(a: "whassup", b: "psus") == false
// cycpatternCheck(a: "abab", b: "baa") == true
// cycpatternCheck(a: "efef", b: "eeff") == false
// cycpatternCheck(a: "himenss", b: "simen") == true
func cycpatternCheck(a: String, b: String) -> Bool {
    return a.contains(b) || b.contains(a)
}
<|file_separator|>
 // XCTAssertTrue failed

func cycpatternCheck(a: String, b: String) -> Bool {
    let a = a.lowercased()
    let b = b.lowercased()
    
    if a == b {
        return true
    }
    
    for i in 0..<a.count {
        let substring = a[a.index(a.startIndex, offsetBy: i)..<a.index(a.startIndex, offsetBy: a.count)]
        if b.contains(substring) {
            return true
        }
    }
    
    return false
}
```swift
// You are given 2 words. You need to return true if the second word or any of its rotations is a substring in the first word
// cycpatternCheck(a: "abcd", b: "abd") == false
// cycpatternCheck(a: "hello", b: "ell") == true
// cycpatternCheck(a: "whassup", b: "psus") == false
// cycpatternCheck(a: "abab", b: "baa") == true
// cycpatternCheck(a: "efef", b: "eeff") == false
// cycpatternCheck(a: "himenss", b: "simen") == true
func cycpatternCheck(a: String, b: String) -> Bool {
    let a = a.lowercased()
    let b = b.lowercased()
    
    if a == b {
        return true
    }
    
    for i in 0..<a.count {
        let substring = a[a.index(a.startIndex, offsetBy: i)..<a.index(a.startIndex, offsetBy: a.count)]
        if b.contains(substring) {
            return true
        }
    }
    
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func cycpatternCheck(a: String, b: String) -> Bool {
    let b2 = b.count
    for i in 0..<a.count {
        if a.count < b2 {
            return false
        }
        if a.substring(with: Range(uncheckedBounds: (i, i + b2))) == b {
            return true
        }
    }
    return false
}
```swift
// You are given 2 words. You need to return true if the second word or any of its rotations is a substring in the first word
// cycpatternCheck(a: "abcd", b: "abd") == false
// cycpatternCheck(a: "hello", b: "ell") == true
// cycpatternCheck(a: "whassup", b: "psus") == false
// cycpatternCheck(a: "abab", b: "baa") == true
// cycpatternCheck(a: "efef", b: "eeff") == false
// cycpatternCheck(a: "himenss", b: "simen") == true
func cycpatternCheck(a: String, b: String) -> Bool {
    let b2 = b.count
    for i in 0..<a.count {
        if a.count < b2 {
            return false
        }
        if a.substring(with: Range(uncheckedBounds: (i, i + b2))) == b {
            return true
        }
    }
    return false
}
<|file_separator|>
if a.substring(with: Range(uncheckedBounds: (i, i + b2))) == b { // tuple type '(Int, Int)' is not convertible to tuple type '(lower: String.Index, upper: String.Index)'

func cycpatternCheck(a: String, b: String) -> Bool {
    if a == b {
        return true
    }
    for i in 0..<a.count {
        if a.substring(with: Range(uncheckedBounds: (i, a.count))) == b {
            return true
        }
    }
    return false
}
```swift
// You are given 2 words. You need to return true if the second word or any of its rotations is a substring in the first word
// cycpatternCheck(a: "abcd", b: "abd") == false
// cycpatternCheck(a: "hello", b: "ell") == true
// cycpatternCheck(a: "whassup", b: "psus") == false
// cycpatternCheck(a: "abab", b: "baa") == true
// cycpatternCheck(a: "efef", b: "eeff") == false
// cycpatternCheck(a: "himenss", b: "simen") == true
func cycpatternCheck(a: String, b: String) -> Bool {
    if a == b {
        return true
    }
    for i in 0..<a.count {
        if a.substring(with: Range(uncheckedBounds: (i, a.count))) == b {
            return true
        }
    }
    return false
}
<|file_separator|>
if a.substring(with: Range(uncheckedBounds: (i, a.count))) == b { // tuple type '(Int, Int)' is not convertible to tuple type '(lower: String.Index, upper: String.Index)'

func cycpatternCheck(a: String, b: String) -> Bool {
    if a == b {
        return true
    }
    if a.count != b.count {
        return false
    }
    for i in 0..<a.count {
        if a.hasPrefix(b) {
            return true
        }
        a = String(a.dropFirst()) + String(a.first!)
    }
    return false
}
```swift
// You are given 2 words. You need to return true if the second word or any of its rotations is a substring in the first word
// cycpatternCheck(a: "abcd", b: "abd") == false
// cycpatternCheck(a: "hello", b: "ell") == true
// cycpatternCheck(a: "whassup", b: "psus") == false
// cycpatternCheck(a: "abab", b: "baa") == true
// cycpatternCheck(a: "efef", b: "eeff") == false
// cycpatternCheck(a: "himenss", b: "simen") == true
func cycpatternCheck(a: String, b: String) -> Bool {
    if a == b {
        return true
    }
    if a.count != b.count {
        return false
    }
    for i in 0..<a.count {
        if a.hasPrefix(b) {
            return true
        }
        a = String(a.dropFirst()) + String(a.first!)
    }
    return false
}
<|file_separator|>
a = String(a.dropFirst()) + String(a.first!) // cannot assign to value: 'a' is a 'let' constant

func cycpatternCheck(a: String, b: String) -> Bool {
    if a.count != b.count {
        return false
    }
    
    let aArray = Array(a)
    let bArray = Array(b)
    
    for i in 0..<aArray.count {
        if aArray[i] == bArray[0] {
            var j = 0
            var k = i
            while j < bArray.count {
                if aArray[k] != bArray[j] {
                    break
                }
                k = (k + 1) % aArray.count
                j += 1
            }
            if j == bArray.count {
                return true
            }
        }
    }
    
    return false
}
```swift
// You are given 2 words. You need to return true if the second word or any of its rotations is a substring in the first word
// cycpatternCheck(a: "abcd", b: "abd") == false
// cycpatternCheck(a: "hello", b: "ell") == true
// cycpatternCheck(a: "whassup", b: "psus") == false
// cycpatternCheck(a: "abab", b: "baa") == true
// cycpatternCheck(a: "efef", b: "eeff") == false
// cycpatternCheck(a: "himenss", b: "simen") == true
func cycpatternCheck(a: String, b: String) -> Bool {
    if a.count != b.count {
        return false
    }
    
    let aArray = Array(a)
    let bArray = Array(b)
    
    for i in 0..<aArray.count {
        if aArray[i] == bArray[0] {
            var j = 0
            var k = i
            while j < bArray.count {
                if aArray[k] != bArray[j] {
                    break
                }
                k = (k + 1) % aArray.count
                j += 1
            }
            if j == bArray.count {
                return true
            }
        }
    }
    
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func evenOddCount(num: Int) -> (Int, Int) {
  var even = 0
  var odd = 0
  var num = num
  while num > 0 {
    if num % 2 == 0 {
      even += 1
    } else {
      odd += 1
    }
    num /= 10
  }
  return (even, odd)
}
```swift
// Given an integer. return a tuple that has the number of even and odd digits respectively.
// Example:
// evenOddCount(num: -12) == (1, 1)
// evenOddCount(num: 123) == (1, 2)
func evenOddCount(num: Int) -> (Int, Int) {
  var even = 0
  var odd = 0
  var num = num
  while num > 0 {
    if num % 2 == 0 {
      even += 1
    } else {
      odd += 1
    }
    num /= 10
  }
  return (even, odd)
}
<|file_separator|>
 // XCTAssertTrue failed

func evenOddCount(num: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    var num = num
    while num > 0 {
        if num % 2 == 0 {
            even += 1
        } else {
            odd += 1
        }
        num /= 10
    }
    return (even, odd)
}
```swift
// Given an integer. return a tuple that has the number of even and odd digits respectively.
// Example:
// evenOddCount(num: -12) == (1, 1)
// evenOddCount(num: 123) == (1, 2)
func evenOddCount(num: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    var num = num
    while num > 0 {
        if num % 2 == 0 {
            even += 1
        } else {
            odd += 1
        }
        num /= 10
    }
    return (even, odd)
}
<|file_separator|>
 // XCTAssertTrue failed

func evenOddCount(num: Int) -> (Int, Int) {
  var even = 0
  var odd = 0
  var num = num
  while num > 0 {
    if num % 2 == 0 {
      even += 1
    } else {
      odd += 1
    }
    num = num / 10
  }
  return (even, odd)
}
```swift
// Given an integer. return a tuple that has the number of even and odd digits respectively.
// Example:
// evenOddCount(num: -12) == (1, 1)
// evenOddCount(num: 123) == (1, 2)
func evenOddCount(num: Int) -> (Int, Int) {
  var even = 0
  var odd = 0
  var num = num
  while num > 0 {
    if num % 2 == 0 {
      even += 1
    } else {
      odd += 1
    }
    num = num / 10
  }
  return (even, odd)
}
<|file_separator|>
 // XCTAssertTrue failed

func evenOddCount(num: Int) -> (Int, Int) {
  var even = 0
  var odd = 0
  var num = num
  while num != 0 {
    if num % 2 == 0 {
      even += 1
    } else {
      odd += 1
    }
    num = num / 10
  }
  return (even, odd)
}
```swift
// Given an integer. return a tuple that has the number of even and odd digits respectively.
// Example:
// evenOddCount(num: -12) == (1, 1)
// evenOddCount(num: 123) == (1, 2)
func evenOddCount(num: Int) -> (Int, Int) {
  var even = 0
  var odd = 0
  var num = num
  while num != 0 {
    if num % 2 == 0 {
      even += 1
    } else {
      odd += 1
    }
    num = num / 10
  }
  return (even, odd)
}
<|file_separator|>
 // XCTAssertTrue failed

func evenOddCount(num: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    var num = num
    while num != 0 {
        if num % 2 == 0 {
            even += 1
        } else {
            odd += 1
        }
        num /= 10
    }
    return (even, odd)
}
```swift
// Given an integer. return a tuple that has the number of even and odd digits respectively.
// Example:
// evenOddCount(num: -12) == (1, 1)
// evenOddCount(num: 123) == (1, 2)
func evenOddCount(num: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    var num = num
    while num != 0 {
        if num % 2 == 0 {
            even += 1
        } else {
            odd += 1
        }
        num /= 10
    }
    return (even, odd)
}
<|file_separator|>
 // XCTAssertTrue failed

func evenOddCount(num: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    var num = num
    while num != 0 {
        if num % 2 == 0 {
            even += 1
        } else {
            odd += 1
        }
        num /= 10
    }
    return (even, odd)
}
```swift
// Given an integer. return a tuple that has the number of even and odd digits respectively.
// Example:
// evenOddCount(num: -12) == (1, 1)
// evenOddCount(num: 123) == (1, 2)
func evenOddCount(num: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    var num = num
    while num != 0 {
        if num % 2 == 0 {
            even += 1
        } else {
            odd += 1
        }
        num /= 10
    }
    return (even, odd)
}
<|file_separator|>
 // XCTAssertTrue failed

func evenOddCount(num: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    var num = num
    while num != 0 {
        if num % 2 == 0 {
            even += 1
        } else {
            odd += 1
        }
        num /= 10
    }
    return (even, odd)
}
```swift
// Given an integer. return a tuple that has the number of even and odd digits respectively.
// Example:
// evenOddCount(num: -12) == (1, 1)
// evenOddCount(num: 123) == (1, 2)
func evenOddCount(num: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    var num = num
    while num != 0 {
        if num % 2 == 0 {
            even += 1
        } else {
            odd += 1
        }
        num /= 10
    }
    return (even, odd)
}
<|file_separator|>
 // XCTAssertTrue failed

func evenOddCount(num: Int) -> (Int, Int) {
  var count = 0
  var count2 = 0
  var num = num
  while num != 0 {
    if num % 2 == 0 {
      count += 1
    } else {
      count2 += 1
    }
    num = num / 10
  }
  return (count, count2)
}
```swift
// Given an integer. return a tuple that has the number of even and odd digits respectively.
// Example:
// evenOddCount(num: -12) == (1, 1)
// evenOddCount(num: 123) == (1, 2)
func evenOddCount(num: Int) -> (Int, Int) {
  var count = 0
  var count2 = 0
  var num = num
  while num != 0 {
    if num % 2 == 0 {
      count += 1
    } else {
      count2 += 1
    }
    num = num / 10
  }
  return (count, count2)
}
<|file_separator|>
 // XCTAssertTrue failed

func evenOddCount(num: Int) -> (Int, Int) {
  var even = 0
  var odd = 0
  var num = num
  while num > 0 {
    if num % 2 == 0 {
      even += 1
    } else {
      odd += 1
    }
    num /= 10
  }
  return (even, odd)
}
```swift
// Given an integer. return a tuple that has the number of even and odd digits respectively.
// Example:
// evenOddCount(num: -12) == (1, 1)
// evenOddCount(num: 123) == (1, 2)
func evenOddCount(num: Int) -> (Int, Int) {
  var even = 0
  var odd = 0
  var num = num
  while num > 0 {
    if num % 2 == 0 {
      even += 1
    } else {
      odd += 1
    }
    num /= 10
  }
  return (even, odd)
}
<|file_separator|>
 // XCTAssertTrue failed

func evenOddCount(num: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    var num = num
    while num > 0 {
        if num % 2 == 0 {
            even += 1
        } else {
            odd += 1
        }
        num /= 10
    }
    return (even, odd)
}
```swift
// Given an integer. return a tuple that has the number of even and odd digits respectively.
// Example:
// evenOddCount(num: -12) == (1, 1)
// evenOddCount(num: 123) == (1, 2)
func evenOddCount(num: Int) -> (Int, Int) {
    var even = 0
    var odd = 0
    var num = num
    while num > 0 {
        if num % 2 == 0 {
            even += 1
        } else {
            odd += 1
        }
        num /= 10
    }
    return (even, odd)
}
<|file_separator|>
 // XCTAssertTrue failed

func intToMiniRoman(number: Int) -> String {
    // TODO: Implement this function
}
```swift
// Given a positive integer, obtain its roman numeral equivalent as a string,
// and return it in lowercase.
// Restrictions: 1 <= num <= 1000
// Examples:
// intToMiniRoman(number: 19) == "xix"
// intToMiniRoman(number: 152) == "clii"
// intToMiniRoman(number: 426) == "cdxxvi"
func intToMiniRoman(number: Int) -> String {
    // TODO: Implement this function
}
<|file_separator|>
} // missing return in global function expected to return 'String'

func intToMiniRoman(number: Int) -> String {
    var number = number
    var result = ""
    
    while number > 0 {
        if number >= 1000 {
            result += "m"
            number -= 1000
        } else if number >= 900 {
            result += "cm"
            number -= 900
        } else if number >= 500 {
            result += "d"
            number -= 500
        } else if number >= 400 {
            result += "cd"
            number -= 400
        } else if number >= 100 {
            result += "c"
            number -= 100
        } else if number >= 90 {
            result += "xc"
            number -= 90
        } else if number >= 50 {
            result += "l"
            number -= 50
        } else if number >= 40 {
            result += "xl"
            number -= 40
        } else if number >= 10 {
            result += "x"
            number -= 10
        } else if number >= 9 {
            result += "ix"
            number -= 9
        } else if number >= 5 {
            result += "v"
            number -= 5
        } else if number >= 4 {
            result += "iv"
            number -= 4
        } else if number >= 1 {
            result += "i"
            number -= 1
        }
    }
    
    return result
}
```swift
// Given a positive integer, obtain its roman numeral equivalent as a string,
// and return it in lowercase.
// Restrictions: 1 <= num <= 1000
// Examples:
// intToMiniRoman(number: 19) == "xix"
// intToMiniRoman(number: 152) == "clii"
// intToMiniRoman(number: 426) == "cdxxvi"
func intToMiniRoman(number: Int) -> String {
    var number = number
    var result = ""
    
    while number > 0 {
        if number >= 1000 {
            result += "m"
            number -= 1000
        } else if number >= 900 {
            result += "cm"
            number -= 900
        } else if number >= 500 {
            result += "d"
            number -= 500
        } else if number >= 400 {
            result += "cd"
            number -= 400
        } else if number >= 100 {
            result += "c"
            number -= 100
        } else if number >= 90 {
            result += "xc"
            number -= 90
        } else if number >= 50 {
            result += "l"
            number -= 50
        } else if number >= 40 {
            result += "xl"
            number -= 40
        } else if number >= 10 {
            result += "x"
            number -= 10
        } else if number >= 9 {
            result += "ix"
            number -= 9
        } else if number >= 5 {
            result += "v"
            number -= 5
        } else if number >= 4 {
            result += "iv"
            number -= 4
        } else if number >= 1 {
            result += "i"
            number -= 1
        }
    }
    
    return result
}
<|file_separator|>

```swift
// Given a positive integer, obtain its roman numeral equivalent as a string,
// and return it in lowercase.
// Restrictions: 1 <= num <= 1000
// Examples:
// intToMiniRoman(number: 19) == "xix"
// intToMiniRoman(number: 152) == "clii"
// intToMiniRoman(number: 426) == "cdxxvi"
func intToMiniRoman(number: Int) -> String {
    // 19 -> "xix"
    // 152 -> "clii"
    // 426 -> "cdxxvi"
    // 1994 -> "cmxciiv"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 -> "mdcmix"
    // 1999 ->
XCTAssertTrue(intToMiniRoman(number: 19) == "xix") // cannot find 'intToMiniRoman' in scope
XCTAssertTrue(intToMiniRoman(number: 152) == "clii") // cannot find 'intToMiniRoman' in scope
XCTAssertTrue(intToMiniRoman(number: 251) == "ccli") // cannot find 'intToMiniRoman' in scope
XCTAssertTrue(intToMiniRoman(number: 426) == "cdxxvi") // cannot find 'intToMiniRoman' in scope
XCTAssertTrue(intToMiniRoman(number: 500) == "d") // cannot find 'intToMiniRoman' in scope
XCTAssertTrue(intToMiniRoman(number: 1) == "i") // cannot find 'intToMiniRoman' in scope
XCTAssertTrue(intToMiniRoman(number: 4) == "iv") // cannot find 'intToMiniRoman' in scope
XCTAssertTrue(intToMiniRoman(number: 43) == "xliii") // cannot find 'intToMiniRoman' in scope
XCTAssertTrue(intToMiniRoman(number: 90) == "xc") // cannot find 'intToMiniRoman' in scope
XCTAssertTrue(intToMiniRoman(number: 94) == "xciv") // cannot find 'intToMiniRoman' in scope
XCTAssertTrue(intToMiniRoman(number: 532) == "dxxxii") // cannot find 'intToMiniRoman' in scope
XCTAssertTrue(intToMiniRoman(number: 900) == "cm") // cannot find 'intToMiniRoman' in scope
XCTAssertTrue(intToMiniRoman(number: 994) == "cmxciv") // cannot find 'intToMiniRoman' in scope
XCTAssertTrue(intToMiniRoman(number: 1000) == "m") // cannot find 'intToMiniRoman' in scope

func intToMiniRoman(number: Int) -> String {
    var num = number
    var result = ""
    var roman = ["i", "v", "x", "l", "c", "d", "m"]
    var int = [1, 5, 10, 50, 100, 500, 1000]
    
    for i in 0...6 {
        if num >= int[i] {
            result += roman[i]
            num -= int[i]
            i -= 1
        }
    }
    
    return result
}
```swift
// Given a positive integer, obtain its roman numeral equivalent as a string,
// and return it in lowercase.
// Restrictions: 1 <= num <= 1000
// Examples:
// intToMiniRoman(number: 19) == "xix"
// intToMiniRoman(number: 152) == "clii"
// intToMiniRoman(number: 426) == "cdxxvi"
func intToMiniRoman(number: Int) -> String {
    var num = number
    var result = ""
    var roman = ["i", "v", "x", "l", "c", "d", "m"]
    var int = [1, 5, 10, 50, 100, 500, 1000]
    
    for i in 0...6 {
        if num >= int[i] {
            result += roman[i]
            num -= int[i]
            i -= 1
        }
    }
    
    return result
}
<|file_separator|>
i -= 1 // left side of mutating operator isn't mutable: 'i' is a 'let' constant

func intToMiniRoman(number: Int) -> String {
  // TODO: Implement this method
}
```swift
// Given a positive integer, obtain its roman numeral equivalent as a string,
// and return it in lowercase.
// Restrictions: 1 <= num <= 1000
// Examples:
// intToMiniRoman(number: 19) == "xix"
// intToMiniRoman(number: 152) == "clii"
// intToMiniRoman(number: 426) == "cdxxvi"
func intToMiniRoman(number: Int) -> String {
  // TODO: Implement this method
}
<|file_separator|>
} // missing return in global function expected to return 'String'

func intToMiniRoman(number: Int) -> String {
  var num = number
  var result = ""
  var roman = ["i", "v", "x", "l", "c", "d", "m"]
  var values = [1, 5, 10, 50, 100, 500, 1000]
  var i = 0
  while num > 0 {
    if num >= values[i] {
      result += roman[i]
      num -= values[i]
    } else {
      i += 1
    }
  }
  return result
}
```swift
// Given a positive integer, obtain its roman numeral equivalent as a string,
// and return it in lowercase.
// Restrictions: 1 <= num <= 1000
// Examples:
// intToMiniRoman(number: 19) == "xix"
// intToMiniRoman(number: 152) == "clii"
// intToMiniRoman(number: 426) == "cdxxvi"
func intToMiniRoman(number: Int) -> String {
  var num = number
  var result = ""
  var roman = ["i", "v", "x", "l", "c", "d", "m"]
  var values = [1, 5, 10, 50, 100, 500, 1000]
  var i = 0
  while num > 0 {
    if num >= values[i] {
      result += roman[i]
      num -= values[i]
    } else {
      i += 1
    }
  }
  return result
}
<|file_separator|>
var roman = ["i", "v", "x", "l", "c", "d", "m"] // variable 'roman' was never mutated; consider changing to 'let' constant
var values = [1, 5, 10, 50, 100, 500, 1000] // variable 'values' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func intToMiniRoman(number: Int) -> String {
  var number = number
  var result = ""
  var romanNumerals = [
    1000: "m",
    900: "cm",
    500: "d",
    400: "cd",
    100: "c",
    90: "xc",
    50: "l",
    40: "xl",
    10: "x",
    9: "ix",
    5: "v",
    4: "iv",
    1: "i"
  ]
  for (key, value) in romanNumerals {
    while number >= key {
      result += value
      number -= key
    }
  }
  return result
}
```swift
// Given a positive integer, obtain its roman numeral equivalent as a string,
// and return it in lowercase.
// Restrictions: 1 <= num <= 1000
// Examples:
// intToMiniRoman(number: 19) == "xix"
// intToMiniRoman(number: 152) == "clii"
// intToMiniRoman(number: 426) == "cdxxvi"
func intToMiniRoman(number: Int) -> String {
  var number = number
  var result = ""
  var romanNumerals = [
    1000: "m",
    900: "cm",
    500: "d",
    400: "cd",
    100: "c",
    90: "xc",
    50: "l",
    40: "xl",
    10: "x",
    9: "ix",
    5: "v",
    4: "iv",
    1: "i"
  ]
  for (key, value) in romanNumerals {
    while number >= key {
      result += value
      number -= key
    }
  }
  return result
}
<|file_separator|>
var romanNumerals = [ // variable 'romanNumerals' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func intToMiniRoman(number: Int) -> String {
  var number = number
  var result = ""
  
  while number > 0 {
    if number >= 1000 {
      result += "m"
      number -= 1000
    } else if number >= 900 {
      result += "cm"
      number -= 900
    } else if number >= 500 {
      result += "d"
      number -= 500
    } else if number >= 400 {
      result += "cd"
      number -= 400
    } else if number >= 100 {
      result += "c"
      number -= 100
    } else if number >= 90 {
      result += "xc"
      number -= 90
    } else if number >= 50 {
      result += "l"
      number -= 50
    } else if number >= 40 {
      result += "xl"
      number -= 40
    } else if number >= 10 {
      result += "x"
      number -= 10
    } else if number >= 9 {
      result += "ix"
      number -= 9
    } else if number >= 5 {
      result += "v"
      number -= 5
    } else if number >= 4 {
      result += "iv"
      number -= 4
    } else if number >= 1 {
      result += "i"
      number -= 1
    }
  }
  
  return result
}
```swift
// Given a positive integer, obtain its roman numeral equivalent as a string,
// and return it in lowercase.
// Restrictions: 1 <= num <= 1000
// Examples:
// intToMiniRoman(number: 19) == "xix"
// intToMiniRoman(number: 152) == "clii"
// intToMiniRoman(number: 426) == "cdxxvi"
func intToMiniRoman(number: Int) -> String {
  var number = number
  var result = ""
  
  while number > 0 {
    if number >= 1000 {
      result += "m"
      number -= 1000
    } else if number >= 900 {
      result += "cm"
      number -= 900
    } else if number >= 500 {
      result += "d"
      number -= 500
    } else if number >= 400 {
      result += "cd"
      number -= 400
    } else if number >= 100 {
      result += "c"
      number -= 100
    } else if number >= 90 {
      result += "xc"
      number -= 90
    } else if number >= 50 {
      result += "l"
      number -= 50
    } else if number >= 40 {
      result += "xl"
      number -= 40
    } else if number >= 10 {
      result += "x"
      number -= 10
    } else if number >= 9 {
      result += "ix"
      number -= 9
    } else if number >= 5 {
      result += "v"
      number -= 5
    } else if number >= 4 {
      result += "iv"
      number -= 4
    } else if number >= 1 {
      result += "i"
      number -= 1
    }
  }
  
  return result
}
<|file_separator|>

func intToMiniRoman(number: Int) -> String {
    var result = ""
    var number = number
    
    while number > 0 {
        if number >= 1000 {
            result += "m"
            number -= 1000
        } else if number >= 900 {
            result += "cm"
            number -= 900
        } else if number >= 500 {
            result += "d"
            number -= 500
        } else if number >= 400 {
            result += "cd"
            number -= 400
        } else if number >= 100 {
            result += "c"
            number -= 100
        } else if number >= 90 {
            result += "xc"
            number -= 90
        } else if number >= 50 {
            result += "l"
            number -= 50
        } else if number >= 40 {
            result += "xl"
            number -= 40
        } else if number >= 10 {
            result += "x"
            number -= 10
        } else if number >= 9 {
            result += "ix"
            number -= 9
        } else if number >= 5 {
            result += "v"
            number -= 5
        } else if number >= 4 {
            result += "iv"
            number -= 4
        } else if number >= 1 {
            result += "i"
            number -= 1
        }
    }
    
    return result
}
```swift
// Given a positive integer, obtain its roman numeral equivalent as a string,
// and return it in lowercase.
// Restrictions: 1 <= num <= 1000
// Examples:
// intToMiniRoman(number: 19) == "xix"
// intToMiniRoman(number: 152) == "clii"
// intToMiniRoman(number: 426) == "cdxxvi"
func intToMiniRoman(number: Int) -> String {
    var result = ""
    var number = number
    
    while number > 0 {
        if number >= 1000 {
            result += "m"
            number -= 1000
        } else if number >= 900 {
            result += "cm"
            number -= 900
        } else if number >= 500 {
            result += "d"
            number -= 500
        } else if number >= 400 {
            result += "cd"
            number -= 400
        } else if number >= 100 {
            result += "c"
            number -= 100
        } else if number >= 90 {
            result += "xc"
            number -= 90
        } else if number >= 50 {
            result += "l"
            number -= 50
        } else if number >= 40 {
            result += "xl"
            number -= 40
        } else if number >= 10 {
            result += "x"
            number -= 10
        } else if number >= 9 {
            result += "ix"
            number -= 9
        } else if number >= 5 {
            result += "v"
            number -= 5
        } else if number >= 4 {
            result += "iv"
            number -= 4
        } else if number >= 1 {
            result += "i"
            number -= 1
        }
    }
    
    return result
}
<|file_separator|>

func intToMiniRoman(number: Int) -> String {
  var num = number
  var result = ""
  var roman = [
    1000: "m",
    900: "cm",
    500: "d",
    400: "cd",
    100: "c",
    90: "xc",
    50: "l",
    40: "xl",
    10: "x",
    9: "ix",
    5: "v",
    4: "iv",
    1: "i"
  ]
  for (key, value) in roman {
    while num >= key {
      result += value
      num -= key
    }
  }
  return result
}
```swift
// Given a positive integer, obtain its roman numeral equivalent as a string,
// and return it in lowercase.
// Restrictions: 1 <= num <= 1000
// Examples:
// intToMiniRoman(number: 19) == "xix"
// intToMiniRoman(number: 152) == "clii"
// intToMiniRoman(number: 426) == "cdxxvi"
func intToMiniRoman(number: Int) -> String {
  var num = number
  var result = ""
  var roman = [
    1000: "m",
    900: "cm",
    500: "d",
    400: "cd",
    100: "c",
    90: "xc",
    50: "l",
    40: "xl",
    10: "x",
    9: "ix",
    5: "v",
    4: "iv",
    1: "i"
  ]
  for (key, value) in roman {
    while num >= key {
      result += value
      num -= key
    }
  }
  return result
}
<|file_separator|>
var roman = [ // variable 'roman' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
    return (a * a) + (b * b) == (c * c)
}

func palindrome(str: String) -> Bool {
    return str == str.reversed()
}
```swift
// Given the lengths of the three sides of a triangle. Return true if the three
// sides form a right-angled triangle, false otherwise.
// A right-angled triangle is a triangle in which one angle is right angle or 
// 90 degree.
// Example:
// rightAngleTriangle(a: 3, b: 4, c: 5) == true
// rightAngleTriangle(a: 1, b: 2, c: 3) == false
func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
    return (a * a) + (b * b) == (c * c)
}

// Given a string, return true if the string is a palindrome, false otherwise.
// A palindrome is a word or phrase that is the same forward and backward.
// Example:
// palindrome("racecar") == true
// palindrome("hello") == false
func palindrome(str: String) -> Bool {
    return str == str.reversed()
}

// Given a string, return true if the string is a palindrome, false otherwise.
// A palindrome is a word or phrase that is the same forward and backward.
// Example:
// palindrome("racecar") == true
// palindrome("hello") == false
func palindrome(str: String) -> Bool {
    return str == str.reversed()
}

// Given a string, return true if the string is a palindrome, false otherwise.
// A palindrome is a word or phrase that is the same forward and backward.
// Example:
// palindrome("racecar") == true
// palindrome("hello") == false
func palindrome(str: String) -> Bool {
    return str == str.reversed()
}

// Given a string, return true if the string is a palindrome, false otherwise.
// A palindrome is a word or phrase that is the same forward and backward.
// Example:
// palindrome("racecar") == true
// palindrome("hello") == false
func palindrome(str: String) -> Bool {
    return str == str.reversed()
}

// Given a string, return true if the string is a palindrome, false otherwise.
// A palindrome is a word or phrase that is the same forward and backward.
// Example:
// palindrome("racecar") == true
// palindrome("hello") == false
func palindrome(str: String) -> Bool {
    return str == str.reversed()
}

// Given a string, return true if the string is a palindrome, false otherwise.
// A palindrome is a word or phrase that is the same forward and backward.
// Example:
// palindrome("racecar") == true
// palindrome("hello") == false
func palindrome(str: String) -> Bool {
    return str == str.reversed()
}

// Given a string, return true if the string is a palindrome, false otherwise.
// A palindrome is a word or phrase that is the same forward and backward.
// Example:
// palindrome("racecar") == true
// palindrome("hello") == false
func palindrome(str: String) -> Bool {
    return str == str.reversed()
}

// Given a string, return true if the string is a palindrome, false otherwise.
// A palindrome is a word or phrase that is the same forward and backward.
// Example:
// palindrome("racecar") == true
// palindrome("hello") == false
func palindrome(str: String) -> Bool {
    return str == str.reversed()
}

// Given a string, return true if the string is a palindrome, false otherwise.
// A palindrome is a word or phrase that is the same forward and backward.
// Example:
// palindrome("racecar") == true
// palindrome("hello") == false
func palindrome(str: String) -> Bool {
    return str == str.reversed()
}

// Given a string, return true if the string is a palindrome, false otherwise.
// A palindrome is a word or phrase that is the same forward and backward.
// Example:
// palindrome("racecar") == true
// palindrome("hello") == false
func palindrome(str: String) -> Bool {
    return str == str.reversed()
}

// Given a string, return true if the string is a palindrome, false otherwise.
// A palindrome is a word or phrase that is the same forward and backward.
// Example:
// palindrome("racecar") == true
// palindrome("hello") == false
func palindrome(str: String) -> Bool {
    return str == str.reversed()
}

// Given a string, return true if the string is a palindrome, false otherwise.
// A palindrome is a word or phrase that is the same forward and backward.
// Example:
// palindrome("racecar") == true
// palindrome("hello") == false
func palindrome(str: String) -> Bool {
    return str == str.reversed()
}

// Given a string, return true if the string is a palindrome, false otherwise.
// A palindrome is a word or phrase that is the same forward and backward.
// Example:
// palindrome("racecar") == true
// palindrome("hello") == false
func palindrome(str: String) -> Bool
return str == str.reversed() // binary operator '==' cannot be applied to operands of type 'String' and '[String.Element]' (aka 'Array<Character>')

func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
    return (a * a + b * b == c * c) || (a * a + c * c == b * b) || (b * b + c * c == a * a)
}

func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("is").count - 1
}

func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("the").count - 1
}

func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("and").count - 1
}

func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("or").count - 1
}

func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("not").count - 1
}

func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("yes").count - 1
}

func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("no").count - 1
}
```swift
// Given the lengths of the three sides of a triangle. Return true if the three
// sides form a right-angled triangle, false otherwise.
// A right-angled triangle is a triangle in which one angle is right angle or 
// 90 degree.
// Example:
// rightAngleTriangle(a: 3, b: 4, c: 5) == true
// rightAngleTriangle(a: 1, b: 2, c: 3) == false
func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
    return (a * a + b * b == c * c) || (a * a + c * c == b * b) || (b * b + c * c == a * a)
}

// Given a string, return the number of times "is" appears in the string.
// Example:
// numberOfTimes("is") == 2
// numberOfTimes("is is") == 3
func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("is").count - 1
}

// Given a string, return the number of times "the" appears in the string.
// Example:
// numberOfTimes("the") == 2
// numberOfTimes("the the") == 3
func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("the").count - 1
}

// Given a string, return the number of times "and" appears in the string.
// Example:
// numberOfTimes("and") == 2
// numberOfTimes("and and") == 3
func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("and").count - 1
}

// Given a string, return the number of times "or" appears in the string.
// Example:
// numberOfTimes("or") == 2
// numberOfTimes("or or") == 3
func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("or").count - 1
}

// Given a string, return the number of times "not" appears in the string.
// Example:
// numberOfTimes("not") == 2
// numberOfTimes("not not") == 3
func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("not").count - 1
}

// Given a string, return the number of times "yes" appears in the string.
// Example:
// numberOfTimes("yes") == 2
// numberOfTimes("yes yes") == 3
func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("yes").count - 1
}

// Given a string, return the number of times "no" appears in the string.
// Example:
// numberOfTimes("no") == 2
// numberOfTimes("no no") == 3
func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("no").count - 1
}

// Given a string, return the number of times "yes" appears in the string.
// Example:
// numberOfTimes("yes") == 2
// numberOfTimes("yes yes") == 3
func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("yes").count - 1
}

// Given a string, return the number of times "no" appears in the string.
// Example:
// numberOfTimes("no") == 2
// numberOfTimes("no no") == 3
func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("no").count - 1
}

// Given a string, return the number of times "yes" appears in the string.
// Example:
// numberOfTimes("yes") == 2
// numberOfTimes("yes yes") == 3
func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("yes").count - 1
}

// Given a string, return the number of times "no" appears in the string.
// Example:
// numberOfTimes("no") == 2
// numberOfTimes("no no") == 3
func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("no").count - 1
}

// Given a string, return the number of times "yes" appears in the string.
// Example:
// numberOfTimes("yes") == 2
// numberOfTimes("yes yes") == 3
func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("yes").count - 1
}

// Given a string, return the number of times "no" appears in the string.
// Example:
// numberOfTimes("no") == 2
// numberOfTimes("no no") == 3
func numberOfTimes(str: String) -> Int {
    return str.componentsSeparatedByString("no").count - 1
}

// Given a string, return the number of times "yes" appears in
return str.componentsSeparatedByString("is").count - 1 // value of type 'String' has no member 'componentsSeparatedByString'
func numberOfTimes(str: String) -> Int { // invalid redeclaration of 'numberOfTimes(str:)'
return str.componentsSeparatedByString("the").count - 1 // value of type 'String' has no member 'componentsSeparatedByString'
func numberOfTimes(str: String) -> Int { // invalid redeclaration of 'numberOfTimes(str:)'
return str.componentsSeparatedByString("and").count - 1 // value of type 'String' has no member 'componentsSeparatedByString'
func numberOfTimes(str: String) -> Int { // invalid redeclaration of 'numberOfTimes(str:)'
return str.componentsSeparatedByString("or").count - 1 // value of type 'String' has no member 'componentsSeparatedByString'
func numberOfTimes(str: String) -> Int { // invalid redeclaration of 'numberOfTimes(str:)'
return str.componentsSeparatedByString("not").count - 1 // value of type 'String' has no member 'componentsSeparatedByString'
func numberOfTimes(str: String) -> Int { // invalid redeclaration of 'numberOfTimes(str:)'
return str.componentsSeparatedByString("yes").count - 1 // value of type 'String' has no member 'componentsSeparatedByString'
func numberOfTimes(str: String) -> Int { // invalid redeclaration of 'numberOfTimes(str:)'
return str.componentsSeparatedByString("no").count - 1 // value of type 'String' has no member 'componentsSeparatedByString'

func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
  if (a*a + b*b == c*c) {
    return true
  } else {
    return false
  }
}
```swift
// Given the lengths of the three sides of a triangle. Return true if the three
// sides form a right-angled triangle, false otherwise.
// A right-angled triangle is a triangle in which one angle is right angle or 
// 90 degree.
// Example:
// rightAngleTriangle(a: 3, b: 4, c: 5) == true
// rightAngleTriangle(a: 1, b: 2, c: 3) == false
func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
  if (a*a + b*b == c*c) {
    return true
  } else {
    return false
  }
}
<|file_separator|>
 // XCTAssertTrue failed

func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
    if (a*a + b*b == c*c) || (a*a + c*c == b*b) || (b*b + c*c == a*a) {
        return true
    }
    return false
}

func palindrome(str: String) -> Bool {
    if str == String(str.reversed()) {
        return true
    }
    return false
}

func countChar(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "a" {
            count += 1
        }
    }
    return count
}

func countChar(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "b" {
            count += 1
        }
    }
    return count
}

func countChar(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "c" {
            count += 1
        }
    }
    return count
}

func countChar(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "d" {
            count += 1
        }
    }
    return count
}

func countChar(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "e" {
            count += 1
        }
    }
    return count
}

func countChar(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "f" {
            count += 1
        }
    }
    return count
}

func countChar(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "g" {
            count += 1
        }
    }
    return count
}

func countChar(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "h" {
            count += 1
        }
    }
    return count
}
```swift
// Given the lengths of the three sides of a triangle. Return true if the three
// sides form a right-angled triangle, false otherwise.
// A right-angled triangle is a triangle in which one angle is right angle or 
// 90 degree.
// Example:
// rightAngleTriangle(a: 3, b: 4, c: 5) == true
// rightAngleTriangle(a: 1, b: 2, c: 3) == false
func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
    if (a*a + b*b == c*c) || (a*a + c*c == b*b) || (b*b + c*c == a*a) {
        return true
    }
    return false
}

// Given a string, return true if the string is a palindrome, false otherwise.
// A palindrome is a word or phrase that reads the same backwards as forwards.
// Example:
// palindrome("racecar") == true
// palindrome("hello") == false
func palindrome(str: String) -> Bool {
    if str == String(str.reversed()) {
        return true
    }
    return false
}

// Given a string, return the number of times the character 'a' occurs in the string.
// Example:
// countChar("hello") == 1
// countChar("hello world") == 2
func countChar(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "a" {
            count += 1
        }
    }
    return count
}

// Given a string, return the number of times the character 'b' occurs in the string.
// Example:
// countChar("hello") == 1
// countChar("hello world") == 2
func countChar(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "b" {
            count += 1
        }
    }
    return count
}

// Given a string, return the number of times the character 'c' occurs in the string.
// Example:
// countChar("hello") == 1
// countChar("hello world") == 2
func countChar(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "c" {
            count += 1
        }
    }
    return count
}

// Given a string, return the number of times the character 'd' occurs in the string.
// Example:
// countChar("hello") == 1
// countChar("hello world") == 2
func countChar(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "d" {
            count += 1
        }
    }
    return count
}

// Given a string, return the number of times the character 'e' occurs in the string.
// Example:
// countChar("hello") == 1
// countChar("hello world") == 2
func countChar(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "e" {
            count += 1
        }
    }
    return count
}

// Given a string, return the number of times the character 'f' occurs in the string.
// Example:
// countChar("hello") == 1
// countChar("hello world") == 2
func countChar(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "f" {
            count += 1
        }
    }
    return count
}

// Given a string, return the number of times the character 'g' occurs in the string.
// Example:
// countChar("hello") == 1
// countChar("hello world") == 2
func countChar(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "g" {
            count += 1
        }
    }
    return count
}

// Given a string, return the number of times the character 'h' occurs in the string.
// Example:
// countChar("hello") == 1
// countChar("hello world") == 2
func countChar(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "h" {
            count += 1
        }
    }
    return count
}

// Given a string, return the number of times the character 'i' occurs in the string.
// Example:
// countChar("hello") == 1
// countChar("hello world") == 2
func countChar(str: String) -> Int {
    var count = 0
    for char in str {
        if char == "i" {
func countChar(str: String) -> Int { // invalid redeclaration of 'countChar(str:)'
func countChar(str: String) -> Int { // invalid redeclaration of 'countChar(str:)'
func countChar(str: String) -> Int { // invalid redeclaration of 'countChar(str:)'
func countChar(str: String) -> Int { // invalid redeclaration of 'countChar(str:)'
func countChar(str: String) -> Int { // invalid redeclaration of 'countChar(str:)'
func countChar(str: String) -> Int { // invalid redeclaration of 'countChar(str:)'
func countChar(str: String) -> Int { // invalid redeclaration of 'countChar(str:)'

func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
    if a == 0 || b == 0 || c == 0 {
        return false
    }
    if a == b || b == c || a == c {
        return false
    }
    if a * a + b * b == c * c {
        return true
    }
    return false
}
```swift
// Given the lengths of the three sides of a triangle. Return true if the three
// sides form a right-angled triangle, false otherwise.
// A right-angled triangle is a triangle in which one angle is right angle or 
// 90 degree.
// Example:
// rightAngleTriangle(a: 3, b: 4, c: 5) == true
// rightAngleTriangle(a: 1, b: 2, c: 3) == false
func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
    if a == 0 || b == 0 || c == 0 {
        return false
    }
    if a == b || b == c || a == c {
        return false
    }
    if a * a + b * b == c * c {
        return true
    }
    return false
}
<|file_separator|>
 // XCTAssertTrue failed

func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
    if a*a + b*b == c*c {
        return true
    } else {
        return false
    }
}

func countAm(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "a" {
            if str[str.index(str.startIndex, offsetBy: i+1)] == "m" {
                count += 1
            }
        }
    }
    return count
}

func countXyz(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "x" {
            if str[str.index(str.startIndex, offsetBy: i+1)] == "y" {
                if str[str.index(str.startIndex, offsetBy: i+2)] == "z" {
                    count += 1
                }
            }
        }
    }
    return count
}

func countCat(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "c" {
            if str[str.index(str.startIndex, offsetBy: i+1)] == "a" {
                if str[str.index(str.startIndex, offsetBy: i+2)] == "t" {
                    count += 1
                }
            }
        }
    }
    return count
}

func countDog(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "d" {
            if str[str.index(str.startIndex, offsetBy: i+1)] == "o" {
                if str[str.index(str.startIndex, offsetBy: i+2)] == "g" {
                    count += 1
                }
            }
        }
    }
    return count
}

func countFish(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "f" {
            if str[str.index(str.startIndex, offsetBy: i+1)] == "i" {
                if str[str.index(str.startIndex, offsetBy: i+2)] == "s" {
                    if str[str.index(str.startIndex, offsetBy: i+3)] == "h" {
                        count += 1
                    }
                }
            }
        }
    }
    return count
}
```swift
// Given the lengths of the three sides of a triangle. Return true if the three
// sides form a right-angled triangle, false otherwise.
// A right-angled triangle is a triangle in which one angle is right angle or 
// 90 degree.
// Example:
// rightAngleTriangle(a: 3, b: 4, c: 5) == true
// rightAngleTriangle(a: 1, b: 2, c: 3) == false
func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
    if a*a + b*b == c*c {
        return true
    } else {
        return false
    }
}

// Given a string, return the number of times "am" appears in the string.
// Example:
// countAm("am") == 1
// countAm("am am") == 2
// countAm("am, am") == 1
func countAm(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "a" {
            if str[str.index(str.startIndex, offsetBy: i+1)] == "m" {
                count += 1
            }
        }
    }
    return count
}

// Given a string, return the number of times "xyz" appears in the string.
// Example:
// countXyz("xyz") == 1
// countXyz("xyzxyz") == 2
// countXyz("xyzxyzxyz") == 3
func countXyz(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "x" {
            if str[str.index(str.startIndex, offsetBy: i+1)] == "y" {
                if str[str.index(str.startIndex, offsetBy: i+2)] == "z" {
                    count += 1
                }
            }
        }
    }
    return count
}

// Given a string, return the number of times "cat" appears in the string.
// Example:
// countCat("cat") == 1
// countCat("catcat") == 2
// countCat("catcatcat") == 3
func countCat(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "c" {
            if str[str.index(str.startIndex, offsetBy: i+1)] == "a" {
                if str[str.index(str.startIndex, offsetBy: i+2)] == "t" {
                    count += 1
                }
            }
        }
    }
    return count
}

// Given a string, return the number of times "dog" appears in the string.
// Example:
// countDog("dog") == 1
// countDog("dogdog") == 2
// countDog("dogdogdog") == 3
func countDog(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "d" {
            if str[str.index(str.startIndex, offsetBy: i+1)] == "o" {
                if str[str.index(str.startIndex, offsetBy: i+2)] == "g" {
                    count += 1
                }
            }
        }
    }
    return count
}

// Given a string, return the number of times "fish" appears in the string.
// Example:
// countFish("fish") == 1
// countFish("fishfish") == 2
// countFish("fishfishfish") == 3
func countFish(str: String) -> Int {
    var count = 0
    for i in 0..<str.count {
        if str[str.index(str.startIndex, offsetBy: i)] == "f" {
            if str[str.index(str.startIndex, offsetBy: i+1)] == "i" {
                if str[str.index(str.startIndex, offsetBy: i+2)] == "s" {
                    if str[str.index(str.startIndex, offsetBy: i+3)] == "h" {
                        count += 1
                    }
                }
            }
        }
    }
    return count
}

// Given a string, return the number of times "cat" appears in the string.
// Example:
// countCat("cat") == 1
// countCat("catcat") == 2
// countCat("catcatcat") == 3
func countCat(str: String) -> Int
 // XCTAssertTrue failed

func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
    if a * a + b * b == c * c {
        return true
    }
    return false
}

func isPalindrome(x: Int) -> Bool {
    let xString = String(x)
    let xArray = xString.map { String($0) }
    let xArrayReversed = xArray.reversed()
    let xArrayReversedString = xArrayReversed.joined()
    if xString == xArrayReversedString {
        return true
    }
    return false
}

func isPrime(x: Int) -> Bool {
    if x == 1 {
        return false
    }
    for i in 2...x {
        if x % i == 0 {
            return false
        }
    }
    return true
}

func isPerfect(x: Int) -> Bool {
    var sum = 0
    for i in 1...x {
        if x % i == 0 {
            sum += i
        }
    }
    if sum == x {
        return true
    }
    return false
}

func isHappy(x: Int) -> Bool {
    var x = x
    var sum = 0
    while x != 1 {
        sum = 0
        while x > 0 {
            let digit = x % 10
            sum += digit * digit
            x /= 10
        }
        x = sum
    }
    if x == 1 {
        return true
    }
    return false
}

func reverseString(s: String) -> String {
    let sArray = s.map { String($0) }
    let sArrayReversed = sArray.reversed()
    let sArrayReversedString = sArrayReversed.joined()
    return sArrayReversedString
}

func sumDigits(x: Int) -> Int {
    var x = x
    var sum = 0
    while x > 0 {
        let digit = x % 10
        sum += digit
        x /= 10
    }
    return sum
}
```swift
// Given the lengths of the three sides of a triangle. Return true if the three
// sides form a right-angled triangle, false otherwise.
// A right-angled triangle is a triangle in which one angle is right angle or 
// 90 degree.
// Example:
// rightAngleTriangle(a: 3, b: 4, c: 5) == true
// rightAngleTriangle(a: 1, b: 2, c: 3) == false
func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
    if a * a + b * b == c * c {
        return true
    }
    return false
}

// Given an integer, return true if it is a palindrome, false otherwise.
// Example:
// isPalindrome(121) == true
// isPalindrome(123) == false
func isPalindrome(x: Int) -> Bool {
    let xString = String(x)
    let xArray = xString.map { String($0) }
    let xArrayReversed = xArray.reversed()
    let xArrayReversedString = xArrayReversed.joined()
    if xString == xArrayReversedString {
        return true
    }
    return false
}

// Given an integer, return true if it is a prime number, false otherwise.
// Example:
// isPrime(1) == false
// isPrime(2) == true
// isPrime(3) == true
// isPrime(4) == false
func isPrime(x: Int) -> Bool {
    if x == 1 {
        return false
    }
    for i in 2...x {
        if x % i == 0 {
            return false
        }
    }
    return true
}

// Given an integer, return true if it is a perfect number, false otherwise.
// A perfect number is a positive integer that is equal to the sum of its
// positive divisors, excluding the number itself.
// Example:
// isPerfect(6) == true
// isPerfect(28) == true
// isPerfect(496) == true
// isPerfect(12) == false
func isPerfect(x: Int) -> Bool {
    var sum = 0
    for i in 1...x {
        if x % i == 0 {
            sum += i
        }
    }
    if sum == x {
        return true
    }
    return false
}

// Given an integer, return true if it is a happy number, false otherwise.
// A happy number is a number defined by the following process:
// Starting with any positive integer, replace the number by the sum of the
// squares of its digits, and repeat the process until the number equals 1.
// If the number does not equal 1, then repeat the process until it
// reaches a number which has no digits.
// Example:
// isHappy(19) == true
// isHappy(10) == false
func isHappy(x: Int) -> Bool {
    var x = x
    var sum = 0
    while x != 1 {
        sum = 0
        while x > 0 {
            let digit = x % 10
            sum += digit * digit
            x /= 10
        }
        x = sum
    }
    if x == 1 {
        return true
    }
    return false
}

// Given a string, return the string with all the characters in reverse order.
// Example:
// reverseString("hello") == "olleh"
// reverseString("hello world") == "dlrow olleh"
func reverseString(s: String) -> String {
    let sArray = s.map { String($0) }
    let sArrayReversed = sArray.reversed()
    let sArrayReversedString = sArrayReversed.joined()
    return sArrayReversedString
}

// Given a string, return the string with all the characters in reverse order.
// Example:
// reverseString("hello") == "olleh"
// reverseString("hello world") == "dlrow olleh"
func reverseString(s: String) -> String {
    let sArray = s.map { String($0) }
    let sArrayReversed = sArray.reversed()
    let sArrayReversedString = sArrayReversed.joined()
    return sArrayReversedString
}

// Given an integer, return the sum of all the digits.
// Example:
// sumDigits(123) == 6
// sumDigits(12345) == 15
func sumDigits(x: Int) -> Int {
    var x = x
    var sum = 0
    while x > 0 {
        let digit = x % 10
        sum += digit
        x /= 10
    }
    return sum
}

// Given an integer, return the sum of all the digits.
// Example:
// sumDigits(123) == 6
// sumDigits(1
 // XCTAssertTrue failed

func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
    if a * a + b * b == c * c {
        return true
    }
    return false
}

func isPalindrome(str: String) -> Bool {
    var str = str
    str = str.lowercased()
    str = str.replacingOccurrences(of: " ", with: "")
    for i in 0..<str.count / 2 {
        if str[str.startIndex] != str[str.index(str.startIndex, offsetBy: str.count - i - 1)] {
            return false
        }
    }
    return true
}

func countVowels(str: String) -> Int {
    var str = str
    str = str.lowercased()
    var count = 0
    for char in str {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            count += 1
        }
    }
    return count
}

func countConsonants(str: String) -> Int {
    var str = str
    str = str.lowercased()
    var count = 0
    for char in str {
        if char != "a" && char != "e" && char != "i" && char != "o" && char != "u" {
            count += 1
        }
    }
    return count
}

func countWords(str: String) -> Int {
    var str = str
    str = str.lowercased()
    var count = 0
    for char in str {
        if char == " " {
            count += 1
        }
    }
    return count + 1
}

func countPalindromes(str: String) -> Int {
    var str = str
    str = str.lowercased()
    var count = 0
    for word in str.components(separatedBy: " ") {
        if isPalindrome(str: word) {
            count += 1
        }
    }
    return count
}
```swift
// Given the lengths of the three sides of a triangle. Return true if the three
// sides form a right-angled triangle, false otherwise.
// A right-angled triangle is a triangle in which one angle is right angle or 
// 90 degree.
// Example:
// rightAngleTriangle(a: 3, b: 4, c: 5) == true
// rightAngleTriangle(a: 1, b: 2, c: 3) == false
func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
    if a * a + b * b == c * c {
        return true
    }
    return false
}

// Given a string, return true if the string is a palindrome, false otherwise.
// A palindrome is a word that reads the same backwards as forwards.
// Example:
// isPalindrome("racecar") == true
// isPalindrome("hello") == false
func isPalindrome(str: String) -> Bool {
    var str = str
    str = str.lowercased()
    str = str.replacingOccurrences(of: " ", with: "")
    for i in 0..<str.count / 2 {
        if str[str.startIndex] != str[str.index(str.startIndex, offsetBy: str.count - i - 1)] {
            return false
        }
    }
    return true
}

// Given a string, return the number of vowels in the string.
// Example:
// countVowels("hello") == 2
// countVowels("aeiou") == 5
func countVowels(str: String) -> Int {
    var str = str
    str = str.lowercased()
    var count = 0
    for char in str {
        if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
            count += 1
        }
    }
    return count
}

// Given a string, return the number of consonants in the string.
// Example:
// countConsonants("hello") == 2
// countConsonants("aeiou") == 0
func countConsonants(str: String) -> Int {
    var str = str
    str = str.lowercased()
    var count = 0
    for char in str {
        if char != "a" && char != "e" && char != "i" && char != "o" && char != "u" {
            count += 1
        }
    }
    return count
}

// Given a string, return the number of words in the string.
// Example:
// countWords("hello") == 1
// countWords("hello world") == 2
func countWords(str: String) -> Int {
    var str = str
    str = str.lowercased()
    var count = 0
    for char in str {
        if char == " " {
            count += 1
        }
    }
    return count + 1
}

// Given a string, return the number of words in the string that are palindromes.
// A palindrome is a word that reads the same backwards as forwards.
// Example:
// countPalindromes("hello") == 0
// countPalindromes("racecar") == 1
// countPalindromes("racecar racecar") == 2
func countPalindromes(str: String) -> Int {
    var str = str
    str = str.lowercased()
    var count = 0
    for word in str.components(separatedBy: " ") {
        if isPalindrome(str: word) {
            count += 1
        }
    }
    return count
}

// Given a string, return the number of words in the string that are palindromes.
// A palindrome is a word that reads the same backwards as forwards.
// Example:
// countPalindromes("hello") == 0
// countPalindromes("racecar") == 1
// countPalindromes("racecar racecar") == 2
func countPalindromes(str: String) -> Int {
    var str = str
    str = str.lowercased()
    var count = 0
    for word in str.components(separatedBy: " ") {
        if isPalindrome(str: word) {
            count += 1
        }
    }
    return count
}

// Given a string, return the number of words in the string that are palindromes.
// A palindrome is a word that reads the same backwards as forwards.
// Example:
// countPalindromes("hello") == 0
// countPalindromes("racecar") == 1
// countPalindromes("racecar racecar") == 2
func countPalindromes(str: String) -> Int {
    var str = str
    str = str.lowercased()
    var count = 0
    for word in str.components(separatedBy: " ") {
        
 // XCTAssertTrue failed

func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
    return (a * a + b * b == c * c) || (a * a + c * c == b * b) || (b * b + c * c == a * a)
}

func sumOfRight(nums: Int...) -> [Int] {
    var result = [Int]()
    var sum = 0
    for i in 0..<nums.count {
        sum += nums[i]
        result.append(sum)
    }
    return result
}

func productOfLeft(nums: Int...) -> [Int] {
    var result = [Int]()
    var product = 1
    for i in 0..<nums.count {
        product *= nums[i]
        result.append(product)
    }
    return result
}

func productOfRight(nums: Int...) -> [Int] {
    var result = [Int]()
    var product = 1
    for i in 0..<nums.count {
        product *= nums[i]
        result.insert(product, at: 0)
    }
    return result
}

func productOfLeftAndRight(nums: Int...) -> [Int] {
    var result = [Int]()
    var product = 1
    for i in 0..<nums.count {
        product *= nums[i]
        result.insert(product, at: 0)
    }
    for i in 0..<nums.count {
        product = 1
        for j in i+1..<nums.count {
            product *= nums[j]
        }
        result.append(product)
    }
    return result
}
```swift
// Given the lengths of the three sides of a triangle. Return true if the three
// sides form a right-angled triangle, false otherwise.
// A right-angled triangle is a triangle in which one angle is right angle or 
// 90 degree.
// Example:
// rightAngleTriangle(a: 3, b: 4, c: 5) == true
// rightAngleTriangle(a: 1, b: 2, c: 3) == false
func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
    return (a * a + b * b == c * c) || (a * a + c * c == b * b) || (b * b + c * c == a * a)
}

// Given a list of integers, return a list of integers where each integer is the
// sum of the integers to the right of it.
// Example:
// sumOfRight(1, 2, 3, 4, 5) == [2, 5, 11, 12, 15]
// sumOfRight(1, 2, 3) == [2, 5, 6]
func sumOfRight(nums: Int...) -> [Int] {
    var result = [Int]()
    var sum = 0
    for i in 0..<nums.count {
        sum += nums[i]
        result.append(sum)
    }
    return result
}

// Given a list of integers, return a list of integers where each integer is the
// product of the integers to the left of it.
// Example:
// productOfLeft(1, 2, 3, 4, 5) == [120, 60, 40, 30, 24]
// productOfLeft(1, 2, 3) == [6, 3, 2]
func productOfLeft(nums: Int...) -> [Int] {
    var result = [Int]()
    var product = 1
    for i in 0..<nums.count {
        product *= nums[i]
        result.append(product)
    }
    return result
}

// Given a list of integers, return a list of integers where each integer is the
// product of the integers to the right of it.
// Example:
// productOfRight(1, 2, 3, 4, 5) == [120, 60, 40, 30, 24]
// productOfRight(1, 2, 3) == [6, 3, 2]
func productOfRight(nums: Int...) -> [Int] {
    var result = [Int]()
    var product = 1
    for i in 0..<nums.count {
        product *= nums[i]
        result.insert(product, at: 0)
    }
    return result
}

// Given a list of integers, return a list of integers where each integer is the
// product of the integers to the left and right of it.
// Example:
// productOfLeftAndRight(1, 2, 3, 4, 5) == [120, 60, 40, 30, 24]
// productOfLeftAndRight(1, 2, 3) == [6, 3, 2]
func productOfLeftAndRight(nums: Int...) -> [Int] {
    var result = [Int]()
    var product = 1
    for i in 0..<nums.count {
        product *= nums[i]
        result.insert(product, at: 0)
    }
    for i in 0..<nums.count {
        product = 1
        for j in i+1..<nums.count {
            product *= nums[j]
        }
        result.append(product)
    }
    return result
}

// Given a list of integers, return a list of integers where each integer is the
// product of the integers to the left and right of it.
// Example:
// productOfLeftAndRight(1, 2, 3, 4, 5) == [120, 60, 40, 30, 24]
// productOfLeftAndRight(1, 2, 3) == [6, 3, 2]
func productOfLeftAndRight(nums: Int...) -> [Int] {
    var result = [Int]()
    var product = 1
    for i in 0..<nums.count {
        product *= nums[i]
        result.insert(product, at: 0)
    }
    for i in 0..<nums.count {
        product = 1
        for j in 0..<i {
            product *= nums[j]
        }
        for j in i+1..<nums.count {
            product *= nums[j]
        }
        result.append

func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
    return (a*a + b*b == c*c) || (a*a + c*c == b*b) || (b*b + c*c == a*a)
}

func firstLast(str: String) -> String {
    return str.dropFirst().dropLast()
}

func firstLast(str: String) -> String {
    return str.first! + str.dropFirst().dropLast() + str.last!
}

func firstLast3(str: String) -> String {
    return str.prefix(3) + str.suffix(3)
}

func midChar(str: String) -> String {
    return str.prefix(1) + str.dropFirst().dropLast().replacingOccurrences(of: str.dropFirst().dropLast(), with: "*") + str.last!
}

func firstLast2(str: String) -> String {
    return str.dropFirst().dropLast()
}

func firstLast2(str: String) -> String {
    return str.first! + str.dropFirst().dropLast() + str.last!
}

func firstLast2(str: String) -> String {
    return str.prefix(2) + str.suffix(2)
}

func midChar2(str: String) -> String {
    return str.prefix(1) + str.dropFirst().dropLast().dropFirst().dropLast() + str.last!
}
```swift
// Given the lengths of the three sides of a triangle. Return true if the three
// sides form a right-angled triangle, false otherwise.
// A right-angled triangle is a triangle in which one angle is right angle or 
// 90 degree.
// Example:
// rightAngleTriangle(a: 3, b: 4, c: 5) == true
// rightAngleTriangle(a: 1, b: 2, c: 3) == false
func rightAngleTriangle(a: Int, b: Int, c: Int) -> Bool {
    return (a*a + b*b == c*c) || (a*a + c*c == b*b) || (b*b + c*c == a*a)
}

// Given a string, return a new string with the first and last char removed.
// Example:
// firstLast("hello") == "ello"
// firstLast("a") == "a"
// firstLast("ab") == "a"
func firstLast(str: String) -> String {
    return str.dropFirst().dropLast()
}

// Given a string, return a new string with the first char added at the end,
// and the last char added at the beginning.
// Example:
// firstLast("hello") == "ohelllo"
// firstLast("a") == "a"
// firstLast("ab") == "ba"
func firstLast(str: String) -> String {
    return str.first! + str.dropFirst().dropLast() + str.last!
}

// Given a string, return a new string with the first char added at the beginning,
// and the last char added at the end.
// Example:
// firstLast("hello") == "ohelllo"
// firstLast("a") == "a"
// firstLast("ab") == "ba"
func firstLast(str: String) -> String {
    return str.first! + str.dropFirst().dropLast() + str.last!
}

// Given a string, return a new string with the first 3 chars added at the
// beginning and the last 3 chars added at the end.
// Example:
// firstLast3("hello") == "hellol"
// firstLast3("a") == "a"
// firstLast3("ab") == "abab"
func firstLast3(str: String) -> String {
    return str.prefix(3) + str.suffix(3)
}

// Given a string, return a new string with the 2 chars in the middle replaced
// by '*'.
// Example:
// midChar("hello") == "h*ll"
// midChar("a") == "a"
// midChar("ab") == "a"
func midChar(str: String) -> String {
    return str.prefix(1) + str.dropFirst().dropLast().replacingOccurrences(of: str.dropFirst().dropLast(), with: "*") + str.last!
}

// Given a string, return a new string with the first and last chars
// removed.
// Example:
// firstLast2("hello") == "ell"
// firstLast2("a") == "a"
// firstLast2("ab") == "a"
func firstLast2(str: String) -> String {
    return str.dropFirst().dropLast()
}

// Given a string, return a new string with the first char added at the
// beginning and the last char added at the end.
// Example:
// firstLast2("hello") == "ohelllo"
// firstLast2("a") == "a"
// firstLast2("ab") == "ba"
func firstLast2(str: String) -> String {
    return str.first! + str.dropFirst().dropLast() + str.last!
}

// Given a string, return a new string with the first 2 chars added at the
// beginning and the last 2 chars added at the end.
// Example:
// firstLast2("hello") == "hellol"
// firstLast2("a") == "a"
// firstLast2("ab") == "abab"
func firstLast2(str: String) -> String {
    return str.prefix(2) + str.suffix(2)
}

// Given a string, return a new string with the 2 chars in the middle
// removed, so "abc" turns into "a".
// Example:
// midChar2("hello") == "ell"
// midChar2("a") == "a"
// midChar2("ab") == "a"
func midChar2(str: String) -> String {
    return str.prefix(1) + str.dropFirst().dropLast().dropFirst().dropLast() + str.last!
}

// Given a string, return a new string with the first char added at the
// beginning, the last char added at the end, and the 2 chars in the middle
// replaced by '$', so "kitten" turns into "kt$it".
return str.dropFirst().dropLast() // no 'dropLast' candidates produce the expected contextual result type 'String'
func firstLast(str: String) -> String { // invalid redeclaration of 'firstLast(str:)'
return str.first! + str.dropFirst().dropLast() + str.last! // cannot convert value of type 'String.Element' (aka 'Character') to expected argument type 'String'
return str.first! + str.dropFirst().dropLast() + str.last! // binary operator '+' cannot be applied to operands of type 'String.Element' (aka 'Character') and '[DropFirstSequence<String>.Element]' (aka 'Array<Character>')
return str.prefix(3) + str.suffix(3) // cannot convert return expression of type 'String.SubSequence' (aka 'Substring') to return type 'String'
return str.prefix(1) + str.dropFirst().dropLast().replacingOccurrences(of: str.dropFirst().dropLast(), with: "*") + str.last! // cannot convert return expression of type 'String.SubSequence' (aka 'Substring') to return type 'String'
return str.prefix(1) + str.dropFirst().dropLast().replacingOccurrences(of: str.dropFirst().dropLast(), with: "*") + str.last! // cannot convert value of type 'String.Element' (aka 'Character') to expected argument type 'String'
return str.dropFirst().dropLast() // no 'dropLast' candidates produce the expected contextual result type 'String'
func firstLast2(str: String) -> String { // invalid redeclaration of 'firstLast2(str:)'
return str.first! + str.dropFirst().dropLast() + str.last! // binary operator '+' cannot be applied to operands of type 'String.Element' (aka 'Character') and '[DropFirstSequence<String>.Element]' (aka 'Array<Character>')
return str.first! + str.dropFirst().dropLast() + str.last! // cannot convert value of type 'String.Element' (aka 'Character') to expected argument type 'String'
func firstLast2(str: String) -> String { // invalid redeclaration of 'firstLast2(str:)'
return str.prefix(2) + str.suffix(2) // cannot convert return expression of type 'String.SubSequence' (aka 'Substring') to return type 'String'
return str.prefix(1) + str.dropFirst().dropLast().dropFirst().dropLast() + str.last! // cannot convert return expression of type 'String.SubSequence' (aka 'Substring') to return type 'String'

func findMax(words: [String]) -> String {
    var max = ""
    var maxCount = 0
    for word in words {
        var count = 0
        for char in word {
            if word.count(of: char) == 1 {
                count += 1
            }
        }
        if count > maxCount {
            max = word
            maxCount = count
        }
    }
    return max
}
```swift
// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum number
// of unique characters. If multiple strings have maximum number of unique
// characters, return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "string"
// findMax(words: ["name", "enam", "game"]) == "enam"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
    var max = ""
    var maxCount = 0
    for word in words {
        var count = 0
        for char in word {
            if word.count(of: char) == 1 {
                count += 1
            }
        }
        if count > maxCount {
            max = word
            maxCount = count
        }
    }
    return max
}
<|file_separator|>
if word.count(of: char) == 1 { // cannot call value of non-function type 'Int'

func findMax(words: [String]) -> String {
  var max = ""
  var maxCount = 0
  for word in words {
    var count = 0
    for char in word {
      if word.count(of: char) > 1 {
        count += 1
      }
    }
    if count > maxCount {
      max = word
      maxCount = count
    }
  }
  return max
}

func findMin(words: [String]) -> String {
  var min = ""
  var minCount = 0
  for word in words {
    var count = 0
    for char in word {
      if word.count(of: char) > 1 {
        count += 1
      }
    }
    if count < minCount {
      min = word
      minCount = count
    }
  }
  return min
}

func findMaxRepeated(words: [String]) -> String {
  var max = ""
  var maxCount = 0
  for word in words {
    var count = 0
    for char in word {
      if word.count(of: char) > 1 {
        count += 1
      }
    }
    if count > maxCount {
      max = word
      maxCount = count
    }
  }
  return max
}

func findMinRepeated(words: [String]) -> String {
  var min = ""
  var minCount = 0
  for word in words {
    var count = 0
    for char in word {
      if word.count(of: char) > 1 {
        count += 1
      }
    }
    if count < minCount {
      min = word
      minCount = count
    }
  }
  return min
}

func findMaxVowels(words: [String]) -> String {
  var max = ""
  var maxCount = 0
  for word in words {
    var count = 0
    for char in word {
      if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
        count += 1
      }
    }
    if count > maxCount {
      max = word
      maxCount = count
    }
  }
  return max
}
```swift
// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum number
// of unique characters. If multiple strings have maximum number of unique
// characters, return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "string"
// findMax(words: ["name", "enam", "game"]) == "enam"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
  var max = ""
  var maxCount = 0
  for word in words {
    var count = 0
    for char in word {
      if word.count(of: char) > 1 {
        count += 1
      }
    }
    if count > maxCount {
      max = word
      maxCount = count
    }
  }
  return max
}

// Write a function that accepts an array of strings.
// The array contains different words. Return the word with minimum
// number of unique characters. If multiple strings have minimum number
// of unique characters, return the one which comes first in lexicographical order.
// findMin(words: ["name", "of", "string"]) == "of"
// findMin(words: ["name", "enam", "game"]) == "name"
// findMin(words: ["aaaaaaa", "bb", "cc"]) == "bb"
func findMin(words: [String]) -> String {
  var min = ""
  var minCount = 0
  for word in words {
    var count = 0
    for char in word {
      if word.count(of: char) > 1 {
        count += 1
      }
    }
    if count < minCount {
      min = word
      minCount = count
    }
  }
  return min
}

// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum
// number of repeated characters. If multiple strings have maximum
// number of repeated characters, return the one which comes first in lexicographical order.
// findMaxRepeated(words: ["name", "of", "string"]) == "name"
// findMaxRepeated(words: ["name", "enam", "game"]) == "name"
// findMaxRepeated(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMaxRepeated(words: [String]) -> String {
  var max = ""
  var maxCount = 0
  for word in words {
    var count = 0
    for char in word {
      if word.count(of: char) > 1 {
        count += 1
      }
    }
    if count > maxCount {
      max = word
      maxCount = count
    }
  }
  return max
}

// Write a function that accepts an array of strings.
// The array contains different words. Return the word with minimum
// number of repeated characters. If multiple strings have minimum
// number of repeated characters, return the one which comes first in lexicographical order.
// findMinRepeated(words: ["name", "of", "string"]) == "of"
// findMinRepeated(words: ["name", "enam", "game"]) == "game"
// findMinRepeated(words: ["aaaaaaa", "bb", "cc"]) == "bb"
func findMinRepeated(words: [String]) -> String {
  var min = ""
  var minCount = 0
  for word in words {
    var count = 0
    for char in word {
      if word.count(of: char) > 1 {
        count += 1
      }
    }
    if count < minCount {
      min = word
      minCount = count
    }
  }
  return min
}

// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum
// number of vowels. If multiple strings have maximum number of vowels,
// return the one which comes first in lexicographical order.
// findMaxVowels(words: ["name", "of", "string"]) == "name"
// findMaxVowels(words: ["name", "enam", "game"]) == "name"
// findMaxVowels(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMaxVowels(words: [String]) -> String {
  var max = ""
  var maxCount = 0
  for word in words {
    var count = 0
    for char in word {
      if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
        count += 1
      }
    }
    if count > maxCount {
      max = word
      maxCount = count
    }
  }
  return max
}

// Write a function
if word.count(of: char) > 1 { // cannot call value of non-function type 'Int'
if word.count(of: char) > 1 { // cannot call value of non-function type 'Int'
if word.count(of: char) > 1 { // cannot call value of non-function type 'Int'
if word.count(of: char) > 1 { // cannot call value of non-function type 'Int'

func findMax(words: [String]) -> String {
    var max = ""
    var maxCount = 0
    for word in words {
        var count = 0
        for char in word {
            if word.count(of: char) == 1 {
                count += 1
            }
        }
        if count > maxCount {
            max = word
            maxCount = count
        }
    }
    return max
}

func findMin(words: [String]) -> String {
    var min = ""
    var minCount = Int.max
    for word in words {
        var count = 0
        for char in word {
            if word.count(of: char) == 1 {
                count += 1
            }
        }
        if count < minCount {
            min = word
            minCount = count
        }
    }
    return min
}
```swift
// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum number
// of unique characters. If multiple strings have maximum number of unique
// characters, return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "string"
// findMax(words: ["name", "enam", "game"]) == "enam"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
    var max = ""
    var maxCount = 0
    for word in words {
        var count = 0
        for char in word {
            if word.count(of: char) == 1 {
                count += 1
            }
        }
        if count > maxCount {
            max = word
            maxCount = count
        }
    }
    return max
}
// Write a function that accepts an array of strings.
// The array contains different words. Return the word with minimum
// number of unique characters. If multiple strings have minimum number of unique
// characters, return the one which comes first in lexicographical order.
// findMin(words: ["name", "of", "string"]) == "of"
// findMin(words: ["name", "enam", "game"]) == "name"
// findMin(words: ["aaaaaaa", "bb", "cc"]) == "bb"
func findMin(words: [String]) -> String {
    var min = ""
    var minCount = Int.max
    for word in words {
        var count = 0
        for char in word {
            if word.count(of: char) == 1 {
                count += 1
            }
        }
        if count < minCount {
            min = word
            minCount = count
        }
    }
    return min
}
// Write a function that accepts an array of strings.
// The array contains different words. Return the word with minimum
// number of unique characters. If multiple strings have minimum number of unique
// characters, return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "of"
// findMax(words: ["name", "enam", "game"]) == "game"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
    var max = ""
    var maxCount = 0
    for word in words {
        var count = 0
        for char in word {
            if word.count(of: char) == 1 {
                count += 1
            }
        }
        if count > maxCount {
            max = word
            maxCount = count
        }
    }
    return max
}
// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum
// number of unique characters. If multiple strings have maximum number of unique
// characters, return the one which comes first in lexicographical order.
// findMin(words: ["name", "of", "string"]) == "name"
// findMin(words: ["name", "enam", "game"]) == "enam"
// findMin(words: ["aaaaaaa", "bb", "cc"]) == "bb"
func findMin(words: [String]) -> String {
    var min = ""
    var minCount = Int.max
    for word in words {
        var count = 0
        for char in word {
            if word.count(of: char) == 1 {
                count += 1
            }
        }
        if count < minCount {
            min = word
            minCount = count
        }
    }
    return min
}
// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum
// number of unique characters. If multiple strings have maximum number of unique
// characters, return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "string"
// findMax(words: ["name", "enam", "game"]) == "game"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
    var max = ""
    var maxCount = 0
    for word in words {
        var count = 0
        for char in word {
            if word.count(of: char) == 1 {
                count += 1
            }
        }
        if count > maxCount {
            max = word
            maxCount = count
        }
    }
    return max
}
// Write a function that accepts an array of strings.
// The array contains different words. Return the word with minimum
// number of unique characters. If multiple
if word.count(of: char) == 1 { // cannot call value of non-function type 'Int'
if word.count(of: char) == 1 { // cannot call value of non-function type 'Int'

func findMax(words: [String]) -> String {
    var max = ""
    var maxCount = 0
    for word in words {
        var count = 0
        for char in word {
            if word.count(of: char) == 1 {
                count += 1
            }
        }
        if count > maxCount {
            max = word
            maxCount = count
        }
    }
    return max
}

func findMax(words: [String]) -> String {
    var max = ""
    var maxCount = 0
    for word in words {
        var count = 0
        for char in word {
            if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
                count += 1
            }
        }
        if count > maxCount {
            max = word
            maxCount = count
        }
    }
    return max
}
```swift
// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum number
// of unique characters. If multiple strings have maximum number of unique
// characters, return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "string"
// findMax(words: ["name", "enam", "game"]) == "enam"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
    var max = ""
    var maxCount = 0
    for word in words {
        var count = 0
        for char in word {
            if word.count(of: char) == 1 {
                count += 1
            }
        }
        if count > maxCount {
            max = word
            maxCount = count
        }
    }
    return max
}

// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum
// number of vowels. If multiple strings have maximum number of vowels,
// return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "name"
// findMax(words: ["name", "enam", "game"]) == "enam"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
    var max = ""
    var maxCount = 0
    for word in words {
        var count = 0
        for char in word {
            if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
                count += 1
            }
        }
        if count > maxCount {
            max = word
            maxCount = count
        }
    }
    return max
}

// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum
// number of consonants. If multiple strings have maximum number of consonants,
// return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "of"
// findMax(words: ["name", "enam", "game"]) == "enam"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
    var max = ""
    var maxCount = 0
    for word in words {
        var count = 0
        for char in word {
            if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
                count += 1
            }
        }
        if count > maxCount {
            max = word
            maxCount = count
        }
    }
    return max
}

// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum
// number of consonants. If multiple strings have maximum number of consonants,
// return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "of"
// findMax(words: ["name", "enam", "game"]) == "enam"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
    var max = ""
    var maxCount = 0
    for word in words {
        var count = 0
        for char in word {
            if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
                count += 1
            }
        }
        if count > maxCount {
            max = word
            maxCount = count
        }
    }
    return max
}

// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum
// number of consonants. If multiple strings have maximum number of consonants,
// return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "of"
// findMax(words: ["name", "enam", "game"]) == "enam"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
    var max = ""
    var maxCount = 0
    for word in words {
        var count = 0
        for char in word {
            if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
                count += 1
            }
if word.count(of: char) == 1 { // cannot call value of non-function type 'Int'
func findMax(words: [String]) -> String { // invalid redeclaration of 'findMax(words:)'

func findMax(words: [String]) -> String {
  var max = ""
  var maxCount = 0
  for word in words {
    var count = 0
    for char in word {
      if char == char.lowercased() {
        count += 1
      }
    }
    if count > maxCount {
      max = word
      maxCount = count
    }
  }
  return max
}

func findMax(words: [String]) -> String {
  var max = ""
  var maxCount = 0
  for word in words {
    var count = 0
    for char in word {
      if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
        count += 1
      }
    }
    if count > maxCount {
      max = word
      maxCount = count
    }
  }
  return max
}
```swift
// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum number
// of unique characters. If multiple strings have maximum number of unique
// characters, return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "string"
// findMax(words: ["name", "enam", "game"]) == "enam"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
  var max = ""
  var maxCount = 0
  for word in words {
    var count = 0
    for char in word {
      if char == char.lowercased() {
        count += 1
      }
    }
    if count > maxCount {
      max = word
      maxCount = count
    }
  }
  return max
}

// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum
// number of vowels. If multiple strings have maximum number of vowels,
// return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "string"
// findMax(words: ["name", "enam", "game"]) == "enam"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
  var max = ""
  var maxCount = 0
  for word in words {
    var count = 0
    for char in word {
      if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
        count += 1
      }
    }
    if count > maxCount {
      max = word
      maxCount = count
    }
  }
  return max
}

// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum
// number of consonants. If multiple strings have maximum number of consonants,
// return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "string"
// findMax(words: ["name", "enam", "game"]) == "enam"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
  var max = ""
  var maxCount = 0
  for word in words {
    var count = 0
    for char in word {
      if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
        count += 1
      }
    }
    if count > maxCount {
      max = word
      maxCount = count
    }
  }
  return max
}

// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum
// number of consonants. If multiple strings have maximum number of consonants,
// return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "string"
// findMax(words: ["name", "enam", "game"]) == "enam"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
  var max = ""
  var maxCount = 0
  for word in words {
    var count = 0
    for char in word {
      if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
        count += 1
      }
    }
    if count > maxCount {
      max = word
      maxCount = count
    }
  }
  return max
}

// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum
// number of consonants. If multiple strings have maximum number of consonants,
// return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "string"
// findMax(words: ["name", "enam", "game"]) == "enam"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
  var max = ""
  var maxCount = 0
  for word in words {
    var count = 0
    for char in word {
      if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
        count += 1
      }
    }
    
if char == char.lowercased() { // binary operator '==' cannot be applied to operands of type 'Character' and 'String'
func findMax(words: [String]) -> String { // invalid redeclaration of 'findMax(words:)'

func findMax(words: [String]) -> String {
  var max = ""
  for word in words {
    var chars = [Character]()
    for char in word {
      if !chars.contains(char) {
        chars.append(char)
      }
    }
    if chars.count > max.count {
      max = word
    }
  }
  return max
}
```swift
// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum number
// of unique characters. If multiple strings have maximum number of unique
// characters, return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "string"
// findMax(words: ["name", "enam", "game"]) == "enam"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
  var max = ""
  for word in words {
    var chars = [Character]()
    for char in word {
      if !chars.contains(char) {
        chars.append(char)
      }
    }
    if chars.count > max.count {
      max = word
    }
  }
  return max
}
<|file_separator|>
 // XCTAssertTrue failed

func findMax(words: [String]) -> String {
  var max = ""
  var maxCount = 0
  for word in words {
    var count = 0
    for char in word {
      if word.count(of: char) == 1 {
        count += 1
      }
    }
    if count > maxCount {
      max = word
      maxCount = count
    }
  }
  return max
}
```swift
// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum number
// of unique characters. If multiple strings have maximum number of unique
// characters, return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "string"
// findMax(words: ["name", "enam", "game"]) == "enam"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
  var max = ""
  var maxCount = 0
  for word in words {
    var count = 0
    for char in word {
      if word.count(of: char) == 1 {
        count += 1
      }
    }
    if count > maxCount {
      max = word
      maxCount = count
    }
  }
  return max
}
<|file_separator|>
if word.count(of: char) == 1 { // cannot call value of non-function type 'Int'

func findMax(words: [String]) -> String {
    var max = ""
    var maxCount = 0
    for word in words {
        var count = 0
        for char in word {
            if word.count(of: char) == 1 {
                count += 1
            }
        }
        if count > maxCount {
            max = word
            maxCount = count
        }
    }
    return max
}
```swift
// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum number
// of unique characters. If multiple strings have maximum number of unique
// characters, return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "string"
// findMax(words: ["name", "enam", "game"]) == "enam"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
    var max = ""
    var maxCount = 0
    for word in words {
        var count = 0
        for char in word {
            if word.count(of: char) == 1 {
                count += 1
            }
        }
        if count > maxCount {
            max = word
            maxCount = count
        }
    }
    return max
}
<|file_separator|>
if word.count(of: char) == 1 { // cannot call value of non-function type 'Int'

func findMax(words: [String]) -> String {
  var max = ""
  var maxCount = 0
  for word in words {
    var count = 0
    for char in word {
      if word.count(of: char) == 1 {
        count += 1
      }
    }
    if count > maxCount {
      max = word
      maxCount = count
    }
  }
  return max
}
```swift
// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum number
// of unique characters. If multiple strings have maximum number of unique
// characters, return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "string"
// findMax(words: ["name", "enam", "game"]) == "enam"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
  var max = ""
  var maxCount = 0
  for word in words {
    var count = 0
    for char in word {
      if word.count(of: char) == 1 {
        count += 1
      }
    }
    if count > maxCount {
      max = word
      maxCount = count
    }
  }
  return max
}
<|file_separator|>
if word.count(of: char) == 1 { // cannot call value of non-function type 'Int'

func findMax(words: [String]) -> String {
  var max = 0
  var maxWord = ""
  for word in words {
    var charSet = Set<Character>()
    for char in word {
      charSet.insert(char)
    }
    if charSet.count > max {
      max = charSet.count
      maxWord = word
    }
  }
  return maxWord
}

func findMin(words: [String]) -> String {
  var min = Int.max
  var minWord = ""
  for word in words {
    var charSet = Set<Character>()
    for char in word {
      charSet.insert(char)
    }
    if charSet.count < min {
      min = charSet.count
      minWord = word
    }
  }
  return minWord
}

func findMaxVowels(words: [String]) -> String {
  var max = 0
  var maxWord = ""
  for word in words {
    var vowelCount = 0
    for char in word {
      if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
        vowelCount += 1
      }
    }
    if vowelCount > max {
      max = vowelCount
      maxWord = word
    }
  }
  return maxWord
}

func findMinVowels(words: [String]) -> String {
  var min = Int.max
  var minWord = ""
  for word in words {
    var vowelCount = 0
    for char in word {
      if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
        vowelCount += 1
      }
    }
    if vowelCount < min {
      min = vowelCount
      minWord = word
    }
  }
  return minWord
}
```swift
// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum number
// of unique characters. If multiple strings have maximum number of unique
// characters, return the one which comes first in lexicographical order.
// findMax(words: ["name", "of", "string"]) == "string"
// findMax(words: ["name", "enam", "game"]) == "enam"
// findMax(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMax(words: [String]) -> String {
  var max = 0
  var maxWord = ""
  for word in words {
    var charSet = Set<Character>()
    for char in word {
      charSet.insert(char)
    }
    if charSet.count > max {
      max = charSet.count
      maxWord = word
    }
  }
  return maxWord
}

// Write a function that accepts an array of strings.
// The array contains different words. Return the word with minimum
// number of unique characters. If multiple strings have minimum number
// of unique characters, return the one which comes first in lexicographical order.
// findMin(words: ["name", "of", "string"]) == "of"
// findMin(words: ["name", "enam", "game"]) == "name"
// findMin(words: ["aaaaaaa", "bb", "cc"]) == "bb"
func findMin(words: [String]) -> String {
  var min = Int.max
  var minWord = ""
  for word in words {
    var charSet = Set<Character>()
    for char in word {
      charSet.insert(char)
    }
    if charSet.count < min {
      min = charSet.count
      minWord = word
    }
  }
  return minWord
}

// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum
// number of vowels. If multiple strings have maximum number of vowels,
// return the one which comes first in lexicographical order.
// findMaxVowels(words: ["name", "of", "string"]) == "name"
// findMaxVowels(words: ["name", "enam", "game"]) == "name"
// findMaxVowels(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMaxVowels(words: [String]) -> String {
  var max = 0
  var maxWord = ""
  for word in words {
    var vowelCount = 0
    for char in word {
      if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
        vowelCount += 1
      }
    }
    if vowelCount > max {
      max = vowelCount
      maxWord = word
    }
  }
  return maxWord
}

// Write a function that accepts an array of strings.
// The array contains different words. Return the word with minimum
// number of vowels. If multiple strings have minimum number of vowels,
// return the one which comes first in lexicographical order.
// findMinVowels(words: ["name", "of", "string"]) == "of"
// findMinVowels(words: ["name", "enam", "game"]) == "name"
// findMinVowels(words: ["aaaaaaa", "bb", "cc"]) == "bb"
func findMinVowels(words: [String]) -> String {
  var min = Int.max
  var minWord = ""
  for word in words {
    var vowelCount = 0
    for char in word {
      if char == "a" || char == "e" || char == "i" || char == "o" || char == "u" {
        vowelCount += 1
      }
    }
    if vowelCount < min {
      min = vowelCount
      minWord = word
    }
  }
  return minWord
}

// Write a function that accepts an array of strings.
// The array contains different words. Return the word with maximum
// number of consonants. If multiple strings have maximum number of consonants,
// return the one which comes first in lexicographical order.
// findMaxConsonants(words: ["name", "of", "string"]) == "of"
// findMaxConsonants(words: ["name", "enam", "game"]) == "name"
// findMaxConsonants(words: ["aaaaaaa", "bb", "cc"]) == "aaaaaaa"
func findMaxConsonants(words: [String]) -> String {
  var max = 0
  var maxWord = ""
  for word in words {
    var consonantCount = 0
    for char in word {
      if char != "a" && char != "e" && char != "i" && char != "o" && char != "u" {
        consonantCount
 // XCTAssertTrue failed

func eat(number: Int, need: Int, remaining: Int) -> [Int] {
  var eaten = 0
  var remaining = remaining
  var need = need
  var number = number
  var result = [0, 0]
  if remaining < need {
    eaten = remaining
    remaining = 0
  } else {
    eaten = need
    remaining = remaining - need
  }
  result[0] = eaten + number
  result[1] = remaining
  return result
}
```swift
// You're a hungry rabbit, and you already have eaten a certain number of carrots,
// but now you need to eat more carrots to complete the day's meals.
// you should return an array of [ total number of eaten carrots after your meals,
// the number of carrots left after your meals ]
// if there are not enough remaining carrots, you will eat all remaining carrots, but will still be hungry.
// Example:
// Variables:
// @number : integer
// the number of carrots that you have eaten.
// @need : integer
// the number of carrots that you need to eat.
// @remaining : integer
// the number of remaining carrots thet exist in stock
// Constrain:
// * 0 <= number <= 1000
// * 0 <= need <= 1000
// * 0 <= remaining <= 1000
// Have fun :)
// eat(number: 5, need: 6, remaining: 10) == [11, 4]
// eat(number: 4, need: 8, remaining: 9) == [12, 1]
// eat(number: 1, need: 10, remaining: 10) == [11, 0]
// eat(number: 2, need: 11, remaining: 5) == [7, 0]
func eat(number: Int, need: Int, remaining: Int) -> [Int] {
  var eaten = 0
  var remaining = remaining
  var need = need
  var number = number
  var result = [0, 0]
  if remaining < need {
    eaten = remaining
    remaining = 0
  } else {
    eaten = need
    remaining = remaining - need
  }
  result[0] = eaten + number
  result[1] = remaining
  return result
}
<|file_separator|>
var need = need // variable 'need' was never mutated; consider changing to 'let' constant
var number = number // variable 'number' was never mutated; consider changing to 'let' constant

```swift
// You're a hungry rabbit, and you already have eaten a certain number of carrots,
// but now you need to eat more carrots to complete the day's meals.
// you should return an array of [ total number of eaten carrots after your meals,
// the number of carrots left after your meals ]
// if there are not enough remaining carrots, you will eat all remaining carrots, but will still be hungry.
// Example:
// Variables:
// @number : integer
// the number of carrots that you have eaten.
// @need : integer
// the number of carrots that you need to eat.
// @remaining : integer
// the number of remaining carrots thet exist in stock
// Constrain:
// * 0 <= number <= 1000
// * 0 <= need <= 1000
// * 0 <= remaining <= 1000
// Have fun :)
// eat(number: 5, need: 6, remaining: 10) == [11, 4]
// eat(number: 4, need: 8, remaining: 9) == [12, 1]
// eat(number: 1, need: 10, remaining: 10) == [11, 0]
// eat(number: 2, need: 11, remaining: 5) == [7, 0]
func eat(number: Int, need: Int, remaining: Int) -> [Int] {
    var eaten = 0
    var remaining = remaining
    var need = need
    var number = number
    var result = [0,0]
    if remaining < need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining == need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining > need {
        result[0] = need
        result[1] = remaining - need
        return result
    }
    if remaining < need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining == need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining > need {
        result[0] = need
        result[1] = remaining - need
        return result
    }
    if remaining == need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining > need {
        result[0] = need
        result[1] = remaining - need
        return result
    }
    if remaining == need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining > need {
        result[0] = need
        result[1] = remaining - need
        return result
    }
    if remaining == need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining > need {
        result[0] = need
        result[1] = remaining - need
        return result
    }
    if remaining == need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining > need {
        result[0] = need
        result[1] = remaining - need
        return result
    }
    if remaining == need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining > need {
        result[0] = need
        result[1] = remaining - need
        return result
    }
    if remaining == need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining > need {
        result[0] = need
        result[1] = remaining - need
        return result
    }
    if remaining == need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining > need {
        result[0] = need
        result[1] = remaining - need
        return result
    }
    if remaining == need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining > need {
        result[0] = need
        result[1] = remaining - need
        return result
    }
    if remaining == need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining > need {
        result[0] = need
        result[1] = remaining - need
        return result
    }
    if remaining == need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining > need {
        result[0] = need
        result[1] = remaining - need
        return result
    }
    if remaining == need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining > need {
        result[0] = need
        result[1] = remaining - need
        return result
    }
    if remaining == need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining > need {
        result[0] = need
        result[1] = remaining - need
        return result
    }
    if remaining == need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining > need {
        result[0] =
XCTAssertTrue(eat(number: 5, need: 6, remaining: 10) == [11, 4]) // cannot find 'eat' in scope
XCTAssertTrue(eat(number: 4, need: 8, remaining: 9) == [12, 1]) // cannot find 'eat' in scope
XCTAssertTrue(eat(number: 1, need: 10, remaining: 10) == [11, 0]) // cannot find 'eat' in scope
XCTAssertTrue(eat(number: 2, need: 11, remaining: 5) == [7, 0]) // cannot find 'eat' in scope
XCTAssertTrue(eat(number: 4, need: 5, remaining: 7) == [9, 2]) // cannot find 'eat' in scope
XCTAssertTrue(eat(number: 4, need: 5, remaining: 1) == [5, 0]) // cannot find 'eat' in scope

func eat(number: Int, need: Int, remaining: Int) -> [Int] {
    var eaten = 0
    var remaining = remaining
    var need = need
    var number = number
    while eaten < need {
        if remaining > 0 {
            eaten += 1
            remaining -= 1
        } else {
            eaten += 1
            remaining += 1
            need += 1
        }
        number += 1
    }
    return [number, remaining]
}
```swift
// You're a hungry rabbit, and you already have eaten a certain number of carrots,
// but now you need to eat more carrots to complete the day's meals.
// you should return an array of [ total number of eaten carrots after your meals,
// the number of carrots left after your meals ]
// if there are not enough remaining carrots, you will eat all remaining carrots, but will still be hungry.
// Example:
// Variables:
// @number : integer
// the number of carrots that you have eaten.
// @need : integer
// the number of carrots that you need to eat.
// @remaining : integer
// the number of remaining carrots thet exist in stock
// Constrain:
// * 0 <= number <= 1000
// * 0 <= need <= 1000
// * 0 <= remaining <= 1000
// Have fun :)
// eat(number: 5, need: 6, remaining: 10) == [11, 4]
// eat(number: 4, need: 8, remaining: 9) == [12, 1]
// eat(number: 1, need: 10, remaining: 10) == [11, 0]
// eat(number: 2, need: 11, remaining: 5) == [7, 0]
func eat(number: Int, need: Int, remaining: Int) -> [Int] {
    var eaten = 0
    var remaining = remaining
    var need = need
    var number = number
    while eaten < need {
        if remaining > 0 {
            eaten += 1
            remaining -= 1
        } else {
            eaten += 1
            remaining += 1
            need += 1
        }
        number += 1
    }
    return [number, remaining]
}
<|file_separator|>
 // XCTAssertTrue failed

func eat(number: Int, need: Int, remaining: Int) -> [Int] {
    var eaten = 0
    var remaining = remaining
    var need = need
    var number = number
    while eaten < need {
        if remaining > 0 {
            eaten += 1
            remaining -= 1
        } else {
            eaten += 1
            remaining += 1
            number += 1
        }
    }
    return [eaten, remaining]
}
```swift
// You're a hungry rabbit, and you already have eaten a certain number of carrots,
// but now you need to eat more carrots to complete the day's meals.
// you should return an array of [ total number of eaten carrots after your meals,
// the number of carrots left after your meals ]
// if there are not enough remaining carrots, you will eat all remaining carrots, but will still be hungry.
// Example:
// Variables:
// @number : integer
// the number of carrots that you have eaten.
// @need : integer
// the number of carrots that you need to eat.
// @remaining : integer
// the number of remaining carrots thet exist in stock
// Constrain:
// * 0 <= number <= 1000
// * 0 <= need <= 1000
// * 0 <= remaining <= 1000
// Have fun :)
// eat(number: 5, need: 6, remaining: 10) == [11, 4]
// eat(number: 4, need: 8, remaining: 9) == [12, 1]
// eat(number: 1, need: 10, remaining: 10) == [11, 0]
// eat(number: 2, need: 11, remaining: 5) == [7, 0]
func eat(number: Int, need: Int, remaining: Int) -> [Int] {
    var eaten = 0
    var remaining = remaining
    var need = need
    var number = number
    while eaten < need {
        if remaining > 0 {
            eaten += 1
            remaining -= 1
        } else {
            eaten += 1
            remaining += 1
            number += 1
        }
    }
    return [eaten, remaining]
}
<|file_separator|>
var need = need // variable 'need' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func eat(number: Int, need: Int, remaining: Int) -> [Int] {
    var eaten = 0
    var remaining = remaining
    var need = need
    var number = number
    
    if remaining < need {
        eaten = remaining
        remaining = 0
    } else {
        eaten = need
        remaining -= need
    }
    
    if remaining < number {
        number = remaining
        remaining = 0
    } else {
        number -= remaining
        remaining = 0
    }
    
    return [eaten + number, remaining]
}
```swift
// You're a hungry rabbit, and you already have eaten a certain number of carrots,
// but now you need to eat more carrots to complete the day's meals.
// you should return an array of [ total number of eaten carrots after your meals,
// the number of carrots left after your meals ]
// if there are not enough remaining carrots, you will eat all remaining carrots, but will still be hungry.
// Example:
// Variables:
// @number : integer
// the number of carrots that you have eaten.
// @need : integer
// the number of carrots that you need to eat.
// @remaining : integer
// the number of remaining carrots thet exist in stock
// Constrain:
// * 0 <= number <= 1000
// * 0 <= need <= 1000
// * 0 <= remaining <= 1000
// Have fun :)
// eat(number: 5, need: 6, remaining: 10) == [11, 4]
// eat(number: 4, need: 8, remaining: 9) == [12, 1]
// eat(number: 1, need: 10, remaining: 10) == [11, 0]
// eat(number: 2, need: 11, remaining: 5) == [7, 0]
func eat(number: Int, need: Int, remaining: Int) -> [Int] {
    var eaten = 0
    var remaining = remaining
    var need = need
    var number = number
    
    if remaining < need {
        eaten = remaining
        remaining = 0
    } else {
        eaten = need
        remaining -= need
    }
    
    if remaining < number {
        number = remaining
        remaining = 0
    } else {
        number -= remaining
        remaining = 0
    }
    
    return [eaten + number, remaining]
}
<|file_separator|>
var need = need // variable 'need' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

func eat(number: Int, need: Int, remaining: Int) -> [Int] {
    var eaten = 0
    var remaining = remaining
    var need = need
    var number = number
    var result = [0,0]
    if remaining < need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining == need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining > need {
        eaten = remaining - need
        remaining = 0
        need = 0
        result[0] = eaten
        result[1] = remaining
        return result
    }
    if remaining < need {
        eaten = need - remaining
        remaining = 0
        need = 0
        result[0] = eaten
        result[1] = remaining
        return result
    }
    return result
}
```swift
// You're a hungry rabbit, and you already have eaten a certain number of carrots,
// but now you need to eat more carrots to complete the day's meals.
// you should return an array of [ total number of eaten carrots after your meals,
// the number of carrots left after your meals ]
// if there are not enough remaining carrots, you will eat all remaining carrots, but will still be hungry.
// Example:
// Variables:
// @number : integer
// the number of carrots that you have eaten.
// @need : integer
// the number of carrots that you need to eat.
// @remaining : integer
// the number of remaining carrots thet exist in stock
// Constrain:
// * 0 <= number <= 1000
// * 0 <= need <= 1000
// * 0 <= remaining <= 1000
// Have fun :)
// eat(number: 5, need: 6, remaining: 10) == [11, 4]
// eat(number: 4, need: 8, remaining: 9) == [12, 1]
// eat(number: 1, need: 10, remaining: 10) == [11, 0]
// eat(number: 2, need: 11, remaining: 5) == [7, 0]
func eat(number: Int, need: Int, remaining: Int) -> [Int] {
    var eaten = 0
    var remaining = remaining
    var need = need
    var number = number
    var result = [0,0]
    if remaining < need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining == need {
        result[0] = remaining
        result[1] = 0
        return result
    }
    if remaining > need {
        eaten = remaining - need
        remaining = 0
        need = 0
        result[0] = eaten
        result[1] = remaining
        return result
    }
    if remaining < need {
        eaten = need - remaining
        remaining = 0
        need = 0
        result[0] = eaten
        result[1] = remaining
        return result
    }
    return result
}
<|file_separator|>
var number = number // initialization of variable 'number' was never used; consider replacing with assignment to '_' or removing it
 // XCTAssertTrue failed

func eat(number: Int, need: Int, remaining: Int) -> [Int] {
    var eaten = 0
    var remaining = remaining
    var need = need
    var number = number
    while eaten < need {
        if remaining > 0 {
            eaten += 1
            remaining -= 1
            number -= 1
        } else {
            eaten += 1
            remaining = 1000
            number -= 1
        }
    }
    return [eaten, remaining]
}
```swift
// You're a hungry rabbit, and you already have eaten a certain number of carrots,
// but now you need to eat more carrots to complete the day's meals.
// you should return an array of [ total number of eaten carrots after your meals,
// the number of carrots left after your meals ]
// if there are not enough remaining carrots, you will eat all remaining carrots, but will still be hungry.
// Example:
// Variables:
// @number : integer
// the number of carrots that you have eaten.
// @need : integer
// the number of carrots that you need to eat.
// @remaining : integer
// the number of remaining carrots thet exist in stock
// Constrain:
// * 0 <= number <= 1000
// * 0 <= need <= 1000
// * 0 <= remaining <= 1000
// Have fun :)
// eat(number: 5, need: 6, remaining: 10) == [11, 4]
// eat(number: 4, need: 8, remaining: 9) == [12, 1]
// eat(number: 1, need: 10, remaining: 10) == [11, 0]
// eat(number: 2, need: 11, remaining: 5) == [7, 0]
func eat(number: Int, need: Int, remaining: Int) -> [Int] {
    var eaten = 0
    var remaining = remaining
    var need = need
    var number = number
    while eaten < need {
        if remaining > 0 {
            eaten += 1
            remaining -= 1
            number -= 1
        } else {
            eaten += 1
            remaining = 1000
            number -= 1
        }
    }
    return [eaten, remaining]
}
<|file_separator|>
var need = need // variable 'need' was never mutated; consider changing to 'let' constant
 // XCTAssertTrue failed

```swift
// You're a hungry rabbit, and you already have eaten a certain number of carrots,
// but now you need to eat more carrots to complete the day's meals.
// you should return an array of [ total number of eaten carrots after your meals,
// the number of carrots left after your meals ]
// if there are not enough remaining carrots, you will eat all remaining carrots, but will still be hungry.
// Example:
// Variables:
// @number : integer
// the number of carrots that you have eaten.
// @need : integer
// the number of carrots that you need to eat.
// @remaining : integer
// the number of remaining carrots thet exist in stock
// Constrain:
// * 0 <= number <= 1000
// * 0 <= need <= 1000
// * 0 <= remaining <= 1000
// Have fun :)
// eat(number: 5, need: 6, remaining: 10) == [11, 4]
// eat(number: 4, need: 8, remaining: 9) == [12, 1]
// eat(number: 1, need: 10, remaining: 10) == [11, 0]
// eat(number: 2, need: 11, remaining: 5) == [7, 0]
func eat(number: Int, need: Int, remaining: Int) -> [Int] {
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need = need
    var eaten = 0
    var remaining = remaining
    var need
XCTAssertTrue(eat(number: 5, need: 6, remaining: 10) == [11, 4]) // cannot find 'eat' in scope
XCTAssertTrue(eat(number: 4, need: 8, remaining: 9) == [12, 1]) // cannot find 'eat' in scope
XCTAssertTrue(eat(number: 1, need: 10, remaining: 10) == [11, 0]) // cannot find 'eat' in scope
XCTAssertTrue(eat(number: 2, need: 11, remaining: 5) == [7, 0]) // cannot find 'eat' in scope
XCTAssertTrue(eat(number: 4, need: 5, remaining: 7) == [9, 2]) // cannot find 'eat' in scope
XCTAssertTrue(eat(number: 4, need: 5, remaining: 1) == [5, 0]) // cannot find 'eat' in scope

func eat(number: Int, need: Int, remaining: Int) -> [Int] {
    // your code here
    var eaten = 0
    var remaining = remaining
    var need = need
    var number = number
    var result = [Int]()
    if need > remaining {
        eaten = remaining
        remaining = 0
    } else {
        eaten = need
        remaining = remaining - need
    }
    result.append(eaten + number)
    result.append(remaining)
    return result
}
```swift
// You're a hungry rabbit, and you already have eaten a certain number of carrots,
// but now you need to eat more carrots to complete the day's meals.
// you should return an array of [ total number of eaten carrots after your meals,
// the number of carrots left after your meals ]
// if there are not enough remaining carrots, you will eat all remaining carrots, but will still be hungry.
// Example:
// Variables:
// @number : integer
// the number of carrots that you have eaten.
// @need : integer
// the number of carrots that you need to eat.
// @remaining : integer
// the number of remaining carrots thet exist in stock
// Constrain:
// * 0 <= number <= 1000
// * 0 <= need <= 1000
// * 0 <= remaining <= 1000
// Have fun :)
// eat(number: 5, need: 6, remaining: 10) == [11, 4]
// eat(number: 4, need: 8, remaining: 9) == [12, 1]
// eat(number: 1, need: 10, remaining: 10) == [11, 0]
// eat(number: 2, need: 11, remaining: 5) == [7, 0]
func eat(number: Int, need: Int, remaining: Int) -> [Int] {
    // your code here
    var eaten = 0
    var remaining = remaining
    var need = need
    var number = number
    var result = [Int]()
    if need > remaining {
        eaten = remaining
        remaining = 0
    } else {
        eaten = need
        remaining = remaining - need
    }
    result.append(eaten + number)
    result.append(remaining)
    return result
}
<|file_separator|>
var need = need // variable 'need' was never mutated; consider changing to 'let' constant
var number = number // variable 'number' was never mutated; consider changing to 'let' constant

func eat(number: Int, need: Int, remaining: Int) -> [Int] {
  // your code here
  var eaten = 0
  var remaining = remaining
  var need = need
  var number = number
  var result = [0, 0]
  while remaining > 0 {
    if remaining >= need {
      eaten = number
      remaining = remaining - need
      need = 0
    } else {
      eaten = remaining
      remaining = 0
      need = need - remaining
    }
    result[0] = eaten + result[0]
    result[1] = need
    number = number + 1
  }
  return result
}
```swift
// You're a hungry rabbit, and you already have eaten a certain number of carrots,
// but now you need to eat more carrots to complete the day's meals.
// you should return an array of [ total number of eaten carrots after your meals,
// the number of carrots left after your meals ]
// if there are not enough remaining carrots, you will eat all remaining carrots, but will still be hungry.
// Example:
// Variables:
// @number : integer
// the number of carrots that you have eaten.
// @need : integer
// the number of carrots that you need to eat.
// @remaining : integer
// the number of remaining carrots thet exist in stock
// Constrain:
// * 0 <= number <= 1000
// * 0 <= need <= 1000
// * 0 <= remaining <= 1000
// Have fun :)
// eat(number: 5, need: 6, remaining: 10) == [11, 4]
// eat(number: 4, need: 8, remaining: 9) == [12, 1]
// eat(number: 1, need: 10, remaining: 10) == [11, 0]
// eat(number: 2, need: 11, remaining: 5) == [7, 0]
func eat(number: Int, need: Int, remaining: Int) -> [Int] {
  // your code here
  var eaten = 0
  var remaining = remaining
  var need = need
  var number = number
  var result = [0, 0]
  while remaining > 0 {
    if remaining >= need {
      eaten = number
      remaining = remaining - need
      need = 0
    } else {
      eaten = remaining
      remaining = 0
      need = need - remaining
    }
    result[0] = eaten + result[0]
    result[1] = need
    number = number + 1
  }
  return result
}
<|file_separator|>

func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let operator = operators[i - 1]
        switch operator {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            break
        }
    }
    return result
}
```swift
// Given two arrays operators, and operands. The first array has basic algebra operations, and 
// the second array is an array of integers. Use the two given arrays to build the algebric 
// expression and return the evaluation of this expression.
// The basic algebra operations:
// Addition ( + ) 
// Subtraction ( - ) 
// Multiplication ( * ) 
// Floor division ( // ) 
// Exponentiation ( ** ) 
// Example:
// operator['+', '*', '-']
// array = [2, 3, 4, 5]
// result = 2 + 3 * 4 - 5
// => result = 9
// Note:
// The length of operator array is equal to the length of operand array minus one.
// Operand is an array of of non-negative integers.
// Operator array has at least one operator, and operand array has at least two operands.
func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let operator = operators[i - 1]
        switch operator {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            break
        }
    }
    return result
}
<|file_separator|>
let operator = operators[i - 1] // keyword 'operator' cannot be used as an identifier here
switch operator { // expected operator name in operator declaration
switch operator { // expected expression in 'switch' statement

func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let operator = operators[i - 1]
        switch operator {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            break
        }
    }
    return result
}
```swift
// Given two arrays operators, and operands. The first array has basic algebra operations, and 
// the second array is an array of integers. Use the two given arrays to build the algebric 
// expression and return the evaluation of this expression.
// The basic algebra operations:
// Addition ( + ) 
// Subtraction ( - ) 
// Multiplication ( * ) 
// Floor division ( // ) 
// Exponentiation ( ** ) 
// Example:
// operator['+', '*', '-']
// array = [2, 3, 4, 5]
// result = 2 + 3 * 4 - 5
// => result = 9
// Note:
// The length of operator array is equal to the length of operand array minus one.
// Operand is an array of of non-negative integers.
// Operator array has at least one operator, and operand array has at least two operands.
func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let operator = operators[i - 1]
        switch operator {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            break
        }
    }
    return result
}
<|file_separator|>
let operator = operators[i - 1] // keyword 'operator' cannot be used as an identifier here
switch operator { // expected operator name in operator declaration
switch operator { // expected expression in 'switch' statement

func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let operator = operators[i - 1]
        switch operator {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            fatalError("Invalid operator")
        }
    }
    return result
}
```swift
// Given two arrays operators, and operands. The first array has basic algebra operations, and 
// the second array is an array of integers. Use the two given arrays to build the algebric 
// expression and return the evaluation of this expression.
// The basic algebra operations:
// Addition ( + ) 
// Subtraction ( - ) 
// Multiplication ( * ) 
// Floor division ( // ) 
// Exponentiation ( ** ) 
// Example:
// operator['+', '*', '-']
// array = [2, 3, 4, 5]
// result = 2 + 3 * 4 - 5
// => result = 9
// Note:
// The length of operator array is equal to the length of operand array minus one.
// Operand is an array of of non-negative integers.
// Operator array has at least one operator, and operand array has at least two operands.
func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let operator = operators[i - 1]
        switch operator {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            fatalError("Invalid operator")
        }
    }
    return result
}
<|file_separator|>
let operator = operators[i - 1] // keyword 'operator' cannot be used as an identifier here
switch operator { // expected operator name in operator declaration
switch operator { // expected expression in 'switch' statement

func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let operator = operators[i - 1]
        switch operator {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            break
        }
    }
    return result
}
```swift
// Given two arrays operators, and operands. The first array has basic algebra operations, and 
// the second array is an array of integers. Use the two given arrays to build the algebric 
// expression and return the evaluation of this expression.
// The basic algebra operations:
// Addition ( + ) 
// Subtraction ( - ) 
// Multiplication ( * ) 
// Floor division ( // ) 
// Exponentiation ( ** ) 
// Example:
// operator['+', '*', '-']
// array = [2, 3, 4, 5]
// result = 2 + 3 * 4 - 5
// => result = 9
// Note:
// The length of operator array is equal to the length of operand array minus one.
// Operand is an array of of non-negative integers.
// Operator array has at least one operator, and operand array has at least two operands.
func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let operator = operators[i - 1]
        switch operator {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            break
        }
    }
    return result
}
<|file_separator|>
let operator = operators[i - 1] // keyword 'operator' cannot be used as an identifier here
switch operator { // expected operator name in operator declaration
switch operator { // expected expression in 'switch' statement

func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let operator = operators[i - 1]
        switch operator {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            fatalError("Invalid operator")
        }
    }
    return result
}
```swift
// Given two arrays operators, and operands. The first array has basic algebra operations, and 
// the second array is an array of integers. Use the two given arrays to build the algebric 
// expression and return the evaluation of this expression.
// The basic algebra operations:
// Addition ( + ) 
// Subtraction ( - ) 
// Multiplication ( * ) 
// Floor division ( // ) 
// Exponentiation ( ** ) 
// Example:
// operator['+', '*', '-']
// array = [2, 3, 4, 5]
// result = 2 + 3 * 4 - 5
// => result = 9
// Note:
// The length of operator array is equal to the length of operand array minus one.
// Operand is an array of of non-negative integers.
// Operator array has at least one operator, and operand array has at least two operands.
func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let operator = operators[i - 1]
        switch operator {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            fatalError("Invalid operator")
        }
    }
    return result
}
<|file_separator|>
let operator = operators[i - 1] // keyword 'operator' cannot be used as an identifier here
switch operator { // expected operator name in operator declaration
switch operator { // expected expression in 'switch' statement

func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let operator = operators[i - 1]
        switch operator {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            break
        }
    }
    return result
}
```swift
// Given two arrays operators, and operands. The first array has basic algebra operations, and 
// the second array is an array of integers. Use the two given arrays to build the algebric 
// expression and return the evaluation of this expression.
// The basic algebra operations:
// Addition ( + ) 
// Subtraction ( - ) 
// Multiplication ( * ) 
// Floor division ( // ) 
// Exponentiation ( ** ) 
// Example:
// operator['+', '*', '-']
// array = [2, 3, 4, 5]
// result = 2 + 3 * 4 - 5
// => result = 9
// Note:
// The length of operator array is equal to the length of operand array minus one.
// Operand is an array of of non-negative integers.
// Operator array has at least one operator, and operand array has at least two operands.
func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let operator = operators[i - 1]
        switch operator {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            break
        }
    }
    return result
}
<|file_separator|>
let operator = operators[i - 1] // keyword 'operator' cannot be used as an identifier here
switch operator { // expected operator name in operator declaration
switch operator { // expected expression in 'switch' statement

func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let operator = operators[i - 1]
        switch operator {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            break
        }
    }
    return result
}
```swift
// Given two arrays operators, and operands. The first array has basic algebra operations, and 
// the second array is an array of integers. Use the two given arrays to build the algebric 
// expression and return the evaluation of this expression.
// The basic algebra operations:
// Addition ( + ) 
// Subtraction ( - ) 
// Multiplication ( * ) 
// Floor division ( // ) 
// Exponentiation ( ** ) 
// Example:
// operator['+', '*', '-']
// array = [2, 3, 4, 5]
// result = 2 + 3 * 4 - 5
// => result = 9
// Note:
// The length of operator array is equal to the length of operand array minus one.
// Operand is an array of of non-negative integers.
// Operator array has at least one operator, and operand array has at least two operands.
func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let operator = operators[i - 1]
        switch operator {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            break
        }
    }
    return result
}
<|file_separator|>
let operator = operators[i - 1] // keyword 'operator' cannot be used as an identifier here
switch operator { // expected operator name in operator declaration
switch operator { // expected expression in 'switch' statement

func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let op = operators[i - 1]
        switch op {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            break
        }
    }
    return result
}
```swift
// Given two arrays operators, and operands. The first array has basic algebra operations, and 
// the second array is an array of integers. Use the two given arrays to build the algebric 
// expression and return the evaluation of this expression.
// The basic algebra operations:
// Addition ( + ) 
// Subtraction ( - ) 
// Multiplication ( * ) 
// Floor division ( // ) 
// Exponentiation ( ** ) 
// Example:
// operator['+', '*', '-']
// array = [2, 3, 4, 5]
// result = 2 + 3 * 4 - 5
// => result = 9
// Note:
// The length of operator array is equal to the length of operand array minus one.
// Operand is an array of of non-negative integers.
// Operator array has at least one operator, and operand array has at least two operands.
func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let op = operators[i - 1]
        switch op {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            break
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let operator = operators[i - 1]
        switch operator {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            fatalError("Invalid operator")
        }
    }
    return result
}
```swift
// Given two arrays operators, and operands. The first array has basic algebra operations, and 
// the second array is an array of integers. Use the two given arrays to build the algebric 
// expression and return the evaluation of this expression.
// The basic algebra operations:
// Addition ( + ) 
// Subtraction ( - ) 
// Multiplication ( * ) 
// Floor division ( // ) 
// Exponentiation ( ** ) 
// Example:
// operator['+', '*', '-']
// array = [2, 3, 4, 5]
// result = 2 + 3 * 4 - 5
// => result = 9
// Note:
// The length of operator array is equal to the length of operand array minus one.
// Operand is an array of of non-negative integers.
// Operator array has at least one operator, and operand array has at least two operands.
func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let operator = operators[i - 1]
        switch operator {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            fatalError("Invalid operator")
        }
    }
    return result
}
<|file_separator|>
let operator = operators[i - 1] // keyword 'operator' cannot be used as an identifier here
switch operator { // expected operator name in operator declaration
switch operator { // expected expression in 'switch' statement

func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let operator = operators[i - 1]
        switch operator {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            break
        }
    }
    return result
}
```swift
// Given two arrays operators, and operands. The first array has basic algebra operations, and 
// the second array is an array of integers. Use the two given arrays to build the algebric 
// expression and return the evaluation of this expression.
// The basic algebra operations:
// Addition ( + ) 
// Subtraction ( - ) 
// Multiplication ( * ) 
// Floor division ( // ) 
// Exponentiation ( ** ) 
// Example:
// operator['+', '*', '-']
// array = [2, 3, 4, 5]
// result = 2 + 3 * 4 - 5
// => result = 9
// Note:
// The length of operator array is equal to the length of operand array minus one.
// Operand is an array of of non-negative integers.
// Operator array has at least one operator, and operand array has at least two operands.
func doAlgebra(operators: [String], operands: [Int]) -> Int {
    var result = operands[0]
    for i in 1..<operands.count {
        let operator = operators[i - 1]
        switch operator {
        case "+":
            result += operands[i]
        case "-":
            result -= operands[i]
        case "*":
            result *= operands[i]
        case "//":
            result /= operands[i]
        case "**":
            result = Int(pow(Double(result), Double(operands[i])))
        default:
            break
        }
    }
    return result
}
<|file_separator|>
let operator = operators[i - 1] // keyword 'operator' cannot be used as an identifier here
switch operator { // expected operator name in operator declaration
switch operator { // expected expression in 'switch' statement

func solve(s: String) -> String {
    var result = ""
    for char in s {
        if char.isLetter {
            if char.isUppercase {
                result += char.lowercased()
            } else {
                result += char.uppercased()
            }
        } else {
            result += String(char)
        }
    }
    return result
}
```swift
// You are given a string s.
// if s[i] is a letter, reverse its case from lower to upper or vise versa, 
// otherwise keep it as it is.
// If the string contains no letters, reverse the string.
// The function should return the resulted string.
// Examples
// solve(s: "1234") == "4321"
// solve(s: "ab") == "AB"
// solve(s: "#a@C") == "#A@c"
func solve(s: String) -> String {
    var result = ""
    for char in s {
        if char.isLetter {
            if char.isUppercase {
                result += char.lowercased()
            } else {
                result += char.uppercased()
            }
        } else {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func solve(s: String) -> String {
    var result = ""
    for i in 0..<s.count {
        if s[i].isLetter {
            if s[i].isUppercase {
                result.append(s[i].lowercased())
            } else {
                result.append(s[i].uppercased())
            }
        } else {
            result.append(s[i])
        }
    }
    return result
}
```swift
// You are given a string s.
// if s[i] is a letter, reverse its case from lower to upper or vise versa, 
// otherwise keep it as it is.
// If the string contains no letters, reverse the string.
// The function should return the resulted string.
// Examples
// solve(s: "1234") == "4321"
// solve(s: "ab") == "AB"
// solve(s: "#a@C") == "#A@c"
func solve(s: String) -> String {
    var result = ""
    for i in 0..<s.count {
        if s[i].isLetter {
            if s[i].isUppercase {
                result.append(s[i].lowercased())
            } else {
                result.append(s[i].uppercased())
            }
        } else {
            result.append(s[i])
        }
    }
    return result
}
<|file_separator|>
if s[i].isLetter { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if s[i].isUppercase { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
result.append(s[i].lowercased()) // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
result.append(s[i].uppercased()) // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
result.append(s[i]) // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func solve(s: String) -> String {
    var result = ""
    for i in 0..<s.count {
        if s[i].isLetter {
            if s[i].isLowercase {
                result += String(s[i].uppercased())
            } else {
                result += String(s[i].lowercased())
            }
        } else {
            result += String(s[i])
        }
    }
    return result
}
```swift
// You are given a string s.
// if s[i] is a letter, reverse its case from lower to upper or vise versa, 
// otherwise keep it as it is.
// If the string contains no letters, reverse the string.
// The function should return the resulted string.
// Examples
// solve(s: "1234") == "4321"
// solve(s: "ab") == "AB"
// solve(s: "#a@C") == "#A@c"
func solve(s: String) -> String {
    var result = ""
    for i in 0..<s.count {
        if s[i].isLetter {
            if s[i].isLowercase {
                result += String(s[i].uppercased())
            } else {
                result += String(s[i].lowercased())
            }
        } else {
            result += String(s[i])
        }
    }
    return result
}
<|file_separator|>
if s[i].isLetter { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
if s[i].isLowercase { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
result += String(s[i].uppercased()) // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
result += String(s[i].lowercased()) // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.
result += String(s[i]) // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.

func solve(s: String) -> String {
    var result = ""
    for char in s {
        if char.isLetter {
            if char.isUppercase {
                result += String(char.lowercased())
            } else {
                result += String(char.uppercased())
            }
        } else {
            result += String(char)
        }
    }
    return result
}
```swift
// You are given a string s.
// if s[i] is a letter, reverse its case from lower to upper or vise versa, 
// otherwise keep it as it is.
// If the string contains no letters, reverse the string.
// The function should return the resulted string.
// Examples
// solve(s: "1234") == "4321"
// solve(s: "ab") == "AB"
// solve(s: "#a@C") == "#A@c"
func solve(s: String) -> String {
    var result = ""
    for char in s {
        if char.isLetter {
            if char.isUppercase {
                result += String(char.lowercased())
            } else {
                result += String(char.uppercased())
            }
        } else {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func solve(s: String) -> String {
    var result = ""
    for char in s {
        if char.isLetter {
            result += char.isUppercase ? char.lowercased() : char.uppercased()
        } else {
            result += String(char)
        }
    }
    return result
}
```swift
// You are given a string s.
// if s[i] is a letter, reverse its case from lower to upper or vise versa, 
// otherwise keep it as it is.
// If the string contains no letters, reverse the string.
// The function should return the resulted string.
// Examples
// solve(s: "1234") == "4321"
// solve(s: "ab") == "AB"
// solve(s: "#a@C") == "#A@c"
func solve(s: String) -> String {
    var result = ""
    for char in s {
        if char.isLetter {
            result += char.isUppercase ? char.lowercased() : char.uppercased()
        } else {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func solve(s: String) -> String {
    var result = ""
    for char in s {
        if char.isLetter {
            result += char.isUppercase ? char.lowercased() : char.uppercased()
        } else {
            result += String(char)
        }
    }
    return result
}
```swift
// You are given a string s.
// if s[i] is a letter, reverse its case from lower to upper or vise versa, 
// otherwise keep it as it is.
// If the string contains no letters, reverse the string.
// The function should return the resulted string.
// Examples
// solve(s: "1234") == "4321"
// solve(s: "ab") == "AB"
// solve(s: "#a@C") == "#A@c"
func solve(s: String) -> String {
    var result = ""
    for char in s {
        if char.isLetter {
            result += char.isUppercase ? char.lowercased() : char.uppercased()
        } else {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func solve(s: String) -> String {
    var result = ""
    for char in s {
        if char.isLetter {
            if char.isUppercase {
                result += String(char.lowercased())
            } else {
                result += String(char.uppercased())
            }
        } else {
            result += String(char)
        }
    }
    return result
}
```swift
// You are given a string s.
// if s[i] is a letter, reverse its case from lower to upper or vise versa, 
// otherwise keep it as it is.
// If the string contains no letters, reverse the string.
// The function should return the resulted string.
// Examples
// solve(s: "1234") == "4321"
// solve(s: "ab") == "AB"
// solve(s: "#a@C") == "#A@c"
func solve(s: String) -> String {
    var result = ""
    for char in s {
        if char.isLetter {
            if char.isUppercase {
                result += String(char.lowercased())
            } else {
                result += String(char.uppercased())
            }
        } else {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func solve(s: String) -> String {
    var result = ""
    for char in s {
        if char.isLetter {
            if char.isUppercase {
                result += char.lowercased()
            } else {
                result += char.uppercased()
            }
        } else {
            result += String(char)
        }
    }
    return result
}
```swift
// You are given a string s.
// if s[i] is a letter, reverse its case from lower to upper or vise versa, 
// otherwise keep it as it is.
// If the string contains no letters, reverse the string.
// The function should return the resulted string.
// Examples
// solve(s: "1234") == "4321"
// solve(s: "ab") == "AB"
// solve(s: "#a@C") == "#A@c"
func solve(s: String) -> String {
    var result = ""
    for char in s {
        if char.isLetter {
            if char.isUppercase {
                result += char.lowercased()
            } else {
                result += char.uppercased()
            }
        } else {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func solve(s: String) -> String {
    var result = ""
    for char in s {
        if char.isLetter {
            if char.isUppercase {
                result += char.lowercased()
            } else {
                result += char.uppercased()
            }
        } else {
            result += String(char)
        }
    }
    return result
}
```swift
// You are given a string s.
// if s[i] is a letter, reverse its case from lower to upper or vise versa, 
// otherwise keep it as it is.
// If the string contains no letters, reverse the string.
// The function should return the resulted string.
// Examples
// solve(s: "1234") == "4321"
// solve(s: "ab") == "AB"
// solve(s: "#a@C") == "#A@c"
func solve(s: String) -> String {
    var result = ""
    for char in s {
        if char.isLetter {
            if char.isUppercase {
                result += char.lowercased()
            } else {
                result += char.uppercased()
            }
        } else {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

func solve(s: String) -> String {
    var result = ""
    for char in s {
        if char.isLetter {
            if char.isUppercase {
                result += String(char.lowercased())
            } else {
                result += String(char.uppercased())
            }
        } else {
            result += String(char)
        }
    }
    return result
}
```swift
// You are given a string s.
// if s[i] is a letter, reverse its case from lower to upper or vise versa, 
// otherwise keep it as it is.
// If the string contains no letters, reverse the string.
// The function should return the resulted string.
// Examples
// solve(s: "1234") == "4321"
// solve(s: "ab") == "AB"
// solve(s: "#a@C") == "#A@c"
func solve(s: String) -> String {
    var result = ""
    for char in s {
        if char.isLetter {
            if char.isUppercase {
                result += String(char.lowercased())
            } else {
                result += String(char.uppercased())
            }
        } else {
            result += String(char)
        }
    }
    return result
}
<|file_separator|>
 // XCTAssertTrue failed

import CommonCrypto

func stringToMd5(text: String) -> String? {
    guard !text.isEmpty else { return nil }
    let data = text.data(using: .utf8)
    guard let hash = data?.md5() else { return nil }
    return hash.map { String(format: "%02hhx", $0) }.joined()
}
```swift
// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringToMd5(text: String) -> String? {
    guard !text.isEmpty else { return nil }
    let data = text.data(using: .utf8)
    guard let hash = data?.md5() else { return nil }
    return hash.map { String(format: "%02hhx", $0) }.joined()
}
<|file_separator|>
guard let hash = data?.md5() else { return nil } // value of type 'Data' has no member 'md5'

import CommonCrypto

func stringToMd5(text: String) -> String? {
    guard !text.isEmpty else { return nil }
    return text.data(using: .utf8)?.md5.hexEncodedString()
}
```swift
// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringToMd5(text: String) -> String? {
    guard !text.isEmpty else { return nil }
    return text.data(using: .utf8)?.md5.hexEncodedString()
}
<|file_separator|>
return text.data(using: .utf8)?.md5.hexEncodedString() // value of type 'Data' has no member 'md5'

import CommonCrypto

func stringToMd5(text: String) -> String? {
  guard !text.isEmpty else { return nil }
  let data = text.data(using: .utf8)
  guard let hash = data?.md5() else { return nil }
  return hash.map { String(format: "%02hhx", $0) }.joined()
}

func base64(text: String) -> String? {
  guard !text.isEmpty else { return nil }
  let data = text.data(using: .utf8)
  guard let base64 = data?.base64EncodedString() else { return nil }
  return base64
}
```swift
// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringToMd5(text: String) -> String? {
  guard !text.isEmpty else { return nil }
  let data = text.data(using: .utf8)
  guard let hash = data?.md5() else { return nil }
  return hash.map { String(format: "%02hhx", $0) }.joined()
}

// Given a string 'text', return its base64 equivalent string.
// If 'text' is an empty string, return nil.
// base64(text: "Hello world") == "aGVsbG8gd29ybGQ="
func base64(text: String) -> String? {
  guard !text.isEmpty else { return nil }
  let data = text.data(using: .utf8)
  guard let base64 = data?.base64EncodedString() else { return nil }
  return base64
}

// Given a string 'text', return its base64 equivalent string.
// If 'text' is an empty string, return nil.
// base64(text: "Hello world") == "aGVsbG8gd29ybGQ="
func base64(text: String) -> String? {
  guard !text.isEmpty else { return nil }
  let data = text.data(using: .utf8)
  guard let base64 = data?.base64EncodedString() else { return nil }
  return base64
}

// Given a string 'text', return its base64 equivalent string.
// If 'text' is an empty string, return nil.
// base64(text: "Hello world") == "aGVsbG8gd29ybGQ="
func base64(text: String) -> String? {
  guard !text.isEmpty else { return nil }
  let data = text.data(using: .utf8)
  guard let base64 = data?.base64EncodedString() else { return nil }
  return base64
}

// Given a string 'text', return its base64 equivalent string.
// If 'text' is an empty string, return nil.
// base64(text: "Hello world") == "aGVsbG8gd29ybGQ="
func base64(text: String) -> String? {
  guard !text.isEmpty else { return nil }
  let data = text.data(using: .utf8)
  guard let base64 = data?.base64EncodedString() else { return nil }
  return base64
}

// Given a string 'text', return its base64 equivalent string.
// If 'text' is an empty string, return nil.
// base64(text: "Hello world") == "aGVsbG8gd29ybGQ="
func base64(text: String) -> String? {
  guard !text.isEmpty else { return nil }
  let data = text.data(using: .utf8)
  guard let base64 = data?.base64EncodedString() else { return nil }
  return base64
}

// Given a string 'text', return its base64 equivalent string.
// If 'text' is an empty string, return nil.
// base64(text: "Hello world") == "aGVsbG8gd29ybGQ="
func base64(text: String) -> String? {
  guard !text.isEmpty else { return nil }
  let data = text.data(using: .utf8)
  guard let base64 = data?.base64EncodedString() else { return nil }
  return base64
}

// Given a string 'text', return its base64 equivalent string.
// If 'text' is an empty string, return nil.
// base64(text: "Hello world") == "aGVsbG8gd29ybGQ="
func base64(text: String) -> String? {
  guard !text.isEmpty else { return nil }
  let data = text.data(using: .utf8)
  guard let base64 = data?.base64EncodedString() else { return nil }
  return base64
}

// Given a string 'text', return its base64 equivalent string.
// If 'text' is an empty string, return nil.
// base64(text: "Hello world") == "aGVsbG8gd29ybGQ="
func base64(text: String) -> String? {
  guard !text.isEmpty else { return nil }
guard let hash = data?.md5() else { return nil } // value of type 'Data' has no member 'md5'

import CommonCrypto

func stringToMd5(text: String) -> String? {
  if text.isEmpty {
    return nil
  }
  
  let data = text.data(using: .utf8)
  guard let hash = data?.md5() else {
    return nil
  }
  
  return hash.map { String(format: "%02hhx", $0) }.joined()
}
```swift
// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringToMd5(text: String) -> String? {
  if text.isEmpty {
    return nil
  }
  
  let data = text.data(using: .utf8)
  guard let hash = data?.md5() else {
    return nil
  }
  
  return hash.map { String(format: "%02hhx", $0) }.joined()
}
<|file_separator|>
guard let hash = data?.md5() else { // value of type 'Data' has no member 'md5'

import CommonCrypto

func stringToMd5(text: String) -> String? {
    if text.isEmpty {
        return nil
    }
    
    let data = text.data(using: .utf8)
    let hash = data?.md5
    return hash
}
```swift
// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringToMd5(text: String) -> String? {
    if text.isEmpty {
        return nil
    }
    
    let data = text.data(using: .utf8)
    let hash = data?.md5
    return hash
}
<|file_separator|>
let hash = data?.md5 // value of type 'Data' has no member 'md5'

import CommonCrypto

func stringToMd5(text: String) -> String? {
    if text.isEmpty {
        return nil
    }
    
    let data = text.data(using: .utf8)
    let md5 = data?.md5()
    return md5
}
```swift
// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringToMd5(text: String) -> String? {
    if text.isEmpty {
        return nil
    }
    
    let data = text.data(using: .utf8)
    let md5 = data?.md5()
    return md5
}
<|file_separator|>
let md5 = data?.md5() // value of type 'Data' has no member 'md5'

import CommonCrypto

func stringToMd5(text: String) -> String? {
  if text.isEmpty {
    return nil
  }
  
  let data = text.data(using: .utf8)
  let hash = data?.md5()
  
  return hash
}
```swift
// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringToMd5(text: String) -> String? {
  if text.isEmpty {
    return nil
  }
  
  let data = text.data(using: .utf8)
  let hash = data?.md5()
  
  return hash
}
<|file_separator|>
let hash = data?.md5() // value of type 'Data' has no member 'md5'

import CommonCrypto

func stringToMd5(text: String) -> String? {
    if text.isEmpty {
        return nil
    }
    
    let data = text.data(using: .utf8)
    let hash = data?.md5()
    return hash
}
```swift
// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringToMd5(text: String) -> String? {
    if text.isEmpty {
        return nil
    }
    
    let data = text.data(using: .utf8)
    let hash = data?.md5()
    return hash
}
<|file_separator|>
let hash = data?.md5() // value of type 'Data' has no member 'md5'

import CommonCrypto

func stringToMd5(text: String) -> String? {
    guard !text.isEmpty else {
        return nil
    }
    return text.md5()
}
```swift
// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringToMd5(text: String) -> String? {
    guard !text.isEmpty else {
        return nil
    }
    return text.md5()
}

// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringToMd5(text: String) -> String? {
    guard !text.isEmpty else {
        return nil
    }
    return text.md5()
}

// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringToMd5(text: String) -> String? {
    guard !text.isEmpty else {
        return nil
    }
    return text.md5()
}

// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringToMd5(text: String) -> String? {
    guard !text.isEmpty else {
        return nil
    }
    return text.md5()
}

// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringToMd5(text: String) -> String? {
    guard !text.isEmpty else {
        return nil
    }
    return text.md5()
}

// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringToMd5(text: String) -> String? {
    guard !text.isEmpty else {
        return nil
    }
    return text.md5()
}

// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringToMd5(text: String) -> String? {
    guard !text.isEmpty else {
        return nil
    }
    return text.md5()
}

// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringToMd5(text: String) -> String? {
    guard !text.isEmpty else {
        return nil
    }
    return text.md5()
}

// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringToMd5(text: String) -> String? {
    guard !text.isEmpty else {
        return nil
    }
    return text.md5()
}

// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringTo
return text.md5() // value of type 'String' has no member 'md5'

import CommonCrypto

func stringToMd5(text: String) -> String? {
    guard !text.isEmpty else {
        return nil
    }
    
    let data = text.data(using: .utf8)
    guard let data = data else {
        return nil
    }
    
    let hash = data.md5()
    return hash.map { String(format: "%02hhx", $0) }.joined()
}
```swift
// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringToMd5(text: String) -> String? {
    guard !text.isEmpty else {
        return nil
    }
    
    let data = text.data(using: .utf8)
    guard let data = data else {
        return nil
    }
    
    let hash = data.md5()
    return hash.map { String(format: "%02hhx", $0) }.joined()
}

// Given a string 'text', return its md5 hash equivalent string.
// If 'text' is an empty string, return nil.
// stringToMd5(text: "Hello world") == "3e25960a79dbc69b674cd4ec67a72c62"
func stringToMd5(text: String) -> String? {
    guard !text.isEmpty else {
        return nil
    }
    
    let data = text.data(using: .utf8)
    guard let data = data else {
        return nil
    }
    
    let hash = data.md5()
    return hash.map { String(format: "%02hhx", $0) }.joined()
}
<|file_separator|>
let hash = data.md5() // value of type 'Data' has no member 'md5'

func generateIntegers(a: Int, b: Int) -> [Int] {
  var result = [Int]()
  for i in a...b {
    if i % 2 == 0 {
      result.append(i)
    }
  }
  return result
}
```swift
// Given two positive integers a and b, return the even digits between a
// and b, in ascending order.
// For example:
// generateIntegers(a: 2, b: 8) == [2, 4, 6, 8]
// generateIntegers(a: 8, b: 2) == [2, 4, 6, 8]
// generateIntegers(a: 10, b: 14) == [] as [Int]
func generateIntegers(a: Int, b: Int) -> [Int] {
  var result = [Int]()
  for i in a...b {
    if i % 2 == 0 {
      result.append(i)
    }
  }
  return result
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func generateIntegers(a: Int, b: Int) -> [Int] {
    var result = [Int]()
    for i in a...b {
        if i % 2 == 0 {
            result.append(i)
        }
    }
    return result
}
```swift
// Given two positive integers a and b, return the even digits between a
// and b, in ascending order.
// For example:
// generateIntegers(a: 2, b: 8) == [2, 4, 6, 8]
// generateIntegers(a: 8, b: 2) == [2, 4, 6, 8]
// generateIntegers(a: 10, b: 14) == [] as [Int]
func generateIntegers(a: Int, b: Int) -> [Int] {
    var result = [Int]()
    for i in a...b {
        if i % 2 == 0 {
            result.append(i)
        }
    }
    return result
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func generateIntegers(a: Int, b: Int) -> [Int] {
    var result = [Int]()
    for i in a...b {
        if i % 2 == 0 {
            result.append(i)
        }
    }
    return result
}
```swift
// Given two positive integers a and b, return the even digits between a
// and b, in ascending order.
// For example:
// generateIntegers(a: 2, b: 8) == [2, 4, 6, 8]
// generateIntegers(a: 8, b: 2) == [2, 4, 6, 8]
// generateIntegers(a: 10, b: 14) == [] as [Int]
func generateIntegers(a: Int, b: Int) -> [Int] {
    var result = [Int]()
    for i in a...b {
        if i % 2 == 0 {
            result.append(i)
        }
    }
    return result
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func generateIntegers(a: Int, b: Int) -> [Int] {
    var result = [Int]()
    for i in a...b {
        if i % 2 == 0 {
            result.append(i)
        }
    }
    return result
}
```swift
// Given two positive integers a and b, return the even digits between a
// and b, in ascending order.
// For example:
// generateIntegers(a: 2, b: 8) == [2, 4, 6, 8]
// generateIntegers(a: 8, b: 2) == [2, 4, 6, 8]
// generateIntegers(a: 10, b: 14) == [] as [Int]
func generateIntegers(a: Int, b: Int) -> [Int] {
    var result = [Int]()
    for i in a...b {
        if i % 2 == 0 {
            result.append(i)
        }
    }
    return result
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func generateIntegers(a: Int, b: Int) -> [Int] {
    var result = [Int]()
    for i in a...b {
        if i % 2 == 0 {
            result.append(i)
        }
    }
    return result
}
```swift
// Given two positive integers a and b, return the even digits between a
// and b, in ascending order.
// For example:
// generateIntegers(a: 2, b: 8) == [2, 4, 6, 8]
// generateIntegers(a: 8, b: 2) == [2, 4, 6, 8]
// generateIntegers(a: 10, b: 14) == [] as [Int]
func generateIntegers(a: Int, b: Int) -> [Int] {
    var result = [Int]()
    for i in a...b {
        if i % 2 == 0 {
            result.append(i)
        }
    }
    return result
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func generateIntegers(a: Int, b: Int) -> [Int] {
    var result = [Int]()
    for i in a...b {
        if i % 2 == 0 {
            result.append(i)
        }
    }
    return result
}
```swift
// Given two positive integers a and b, return the even digits between a
// and b, in ascending order.
// For example:
// generateIntegers(a: 2, b: 8) == [2, 4, 6, 8]
// generateIntegers(a: 8, b: 2) == [2, 4, 6, 8]
// generateIntegers(a: 10, b: 14) == [] as [Int]
func generateIntegers(a: Int, b: Int) -> [Int] {
    var result = [Int]()
    for i in a...b {
        if i % 2 == 0 {
            result.append(i)
        }
    }
    return result
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func generateIntegers(a: Int, b: Int) -> [Int] {
  var result = [Int]()
  for i in a...b {
    if i % 2 == 0 {
      result.append(i)
    }
  }
  return result
}
```swift
// Given two positive integers a and b, return the even digits between a
// and b, in ascending order.
// For example:
// generateIntegers(a: 2, b: 8) == [2, 4, 6, 8]
// generateIntegers(a: 8, b: 2) == [2, 4, 6, 8]
// generateIntegers(a: 10, b: 14) == [] as [Int]
func generateIntegers(a: Int, b: Int) -> [Int] {
  var result = [Int]()
  for i in a...b {
    if i % 2 == 0 {
      result.append(i)
    }
  }
  return result
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func generateIntegers(a: Int, b: Int) -> [Int] {
    var result = [Int]()
    for i in a...b {
        if i % 2 == 0 {
            result.append(i)
        }
    }
    return result
}
```swift
// Given two positive integers a and b, return the even digits between a
// and b, in ascending order.
// For example:
// generateIntegers(a: 2, b: 8) == [2, 4, 6, 8]
// generateIntegers(a: 8, b: 2) == [2, 4, 6, 8]
// generateIntegers(a: 10, b: 14) == [] as [Int]
func generateIntegers(a: Int, b: Int) -> [Int] {
    var result = [Int]()
    for i in a...b {
        if i % 2 == 0 {
            result.append(i)
        }
    }
    return result
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func generateIntegers(a: Int, b: Int) -> [Int] {
    var result = [Int]()
    for i in a...b {
        if i % 2 == 0 {
            result.append(i)
        }
    }
    return result
}
```swift
// Given two positive integers a and b, return the even digits between a
// and b, in ascending order.
// For example:
// generateIntegers(a: 2, b: 8) == [2, 4, 6, 8]
// generateIntegers(a: 8, b: 2) == [2, 4, 6, 8]
// generateIntegers(a: 10, b: 14) == [] as [Int]
func generateIntegers(a: Int, b: Int) -> [Int] {
    var result = [Int]()
    for i in a...b {
        if i % 2 == 0 {
            result.append(i)
        }
    }
    return result
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound

func generateIntegers(a: Int, b: Int) -> [Int] {
  var result = [Int]()
  for i in a...b {
    if i % 2 == 0 {
      result.append(i)
    }
  }
  return result
}
```swift
// Given two positive integers a and b, return the even digits between a
// and b, in ascending order.
// For example:
// generateIntegers(a: 2, b: 8) == [2, 4, 6, 8]
// generateIntegers(a: 8, b: 2) == [2, 4, 6, 8]
// generateIntegers(a: 10, b: 14) == [] as [Int]
func generateIntegers(a: Int, b: Int) -> [Int] {
  var result = [Int]()
  for i in a...b {
    if i % 2 == 0 {
      result.append(i)
    }
  }
  return result
}
<|file_separator|>
 // Fatal error: Range requires lowerBound <= upperBound