Metadata
| Key | Value |
|---|---|
| engine | transformers |
| prompt | completion |
| temp | 0.2 |
| top_p | 0.95 |
| max_new_tokens | 1024 |
| n_completions | 10 |
Solutions
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
numbers.sort()
for i in 0..<numbers.count {
for j in i+1..<numbers.count {
if abs(numbers[j] - numbers[i]) < 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 {
numbers.sort()
for i in 0..<numbers.count {
for j in i+1..<numbers.count {
if abs(numbers[j] - numbers[i]) < threshold {
return true
}
}
}
return false
}
`````````swift
func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
numbers.sort()
for i in 0..<numbers.count {
for j in i+1..<numbers.count {
if abs(numbers[j] - numbers[i]) < threshold {
return true
}
}
}
return false
}
hasCloseElements(numbers: [1.0, 2.8, 3.0, 4.0, 5.0, 2.0], threshold: 0.3)
```numbers.sort() // cannot use mutating member on immutable value: 'numbers' is a 'let' constantfunc hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
numbers.sort()
for i in 0..<numbers.count {
for j in i+1..<numbers.count {
if numbers[j] - numbers[i] < 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 {
numbers.sort()
for i in 0..<numbers.count {
for j in i+1..<numbers.count {
if numbers[j] - numbers[i] < threshold {
return true
}
}
}
return false
}
`````````python
# Check if in given array of numbers, are any two numbers closer to each other than
# given threshold.
# hasCloseElements([1.0, 2.0, 3.0], 0.5) == False
# hasCloseElements([1.0, 2.8, 3.0, 4.0, 5.0, 2.0], 0.3) == True
def hasCloseElements(numbers, threshold):
numbers.sort()
for i in range(len(numbers)):
for j in range(i+1, len(numbers)):
if numbers[j] - numbers[i] < threshold:
return True
return False
```numbers.sort() // cannot use mutating member on immutable value: 'numbers' is a 'let' constantfunc hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
for i in 0..<numbers.count {
for j in i+1..<numbers.count {
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 i+1..<numbers.count {
if abs(numbers[i] - numbers[j]) < threshold {
return true
}
}
}
return false
}
`````````python
def has_close_elements(numbers, threshold):
for i in range(len(numbers)):
for j in range(i+1, len(numbers)):
if abs(numbers[i] - numbers[j]) < threshold:
return True
return False
print(has_close_elements([1.0, 2.0, 3.0], 0.5))
print(has_close_elements([1.0, 2.8, 3.0, 4.0, 5.0, 2.0], 0.3))
```func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
var sortedNumbers = numbers.sorted()
for i in 0..<sortedNumbers.count - 1 {
if sortedNumbers[i + 1] - sortedNumbers[i] < 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 {
var sortedNumbers = numbers.sorted()
for i in 0..<sortedNumbers.count - 1 {
if sortedNumbers[i + 1] - sortedNumbers[i] < 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 {
var sortedNumbers = numbers.sorted()
for i in 0..<sortedNumbers.count - 1 {
if sortedNumbers[i + 1] - sortedNumbers[i] < threshold {
return true
}
}
return false
}
```
```python
# Check if in given array of numbers, are any two numbers closer to each other than
# given threshold.
# hasCloseElements([1.0, 2.0, 3.0], 0.5) == False
# hasCloseElements([1.0, 2.8, 3.0, 4.0, 5.0, 2.0], 0.3) == True
def hasCloseElements(numbers, threshold):
sortedNumbers = sorted(numbers)
for i in range(len(sortedNumbers) - 1):
if sortedNumbers[i + 1] - sortedNumbers[i] < threshold:
return True
return False
```var sortedNumbers = numbers.sorted() // variable 'sortedNumbers' was never mutated; consider changing to 'let' constantfunc hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
for i in 0..<numbers.count {
for j in i+1..<numbers.count {
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 i+1..<numbers.count {
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 i+1..<numbers.count {
if abs(numbers[i] - numbers[j]) < threshold {
return true
}
}
}
return false
}
```func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
for i in 0..<numbers.count {
for j in i+1..<numbers.count {
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 i+1..<numbers.count {
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 i+1..<numbers.count {
if abs(numbers[i] - numbers[j]) < threshold {
return true
}
}
}
return false
}
```func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
for i in 0..<numbers.count {
for j in i+1..<numbers.count {
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 i+1..<numbers.count {
if abs(numbers[i] - numbers[j]) < threshold {
return true
}
}
}
return false
}
`````````python
# Check if in given array of numbers, are any two numbers closer to each other than
# given threshold.
# hasCloseElements([1.0, 2.0, 3.0], 0.5) == False
# hasCloseElements([1.0, 2.8, 3.0, 4.0, 5.0, 2.0], 0.3) == True
def hasCloseElements(numbers, threshold):
for i in range(len(numbers)):
for j in range(i+1, len(numbers)):
if abs(numbers[i] - numbers[j]) < threshold:
return True
return False
```func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
var sortedNumbers = numbers.sorted()
for i in 0..<sortedNumbers.count - 1 {
if sortedNumbers[i + 1] - sortedNumbers[i] < 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 {
var sortedNumbers = numbers.sorted()
for i in 0..<sortedNumbers.count - 1 {
if sortedNumbers[i + 1] - sortedNumbers[i] < threshold {
return true
}
}
return false
}
`````````python
def has_close_elements(numbers, threshold):
sorted_numbers = sorted(numbers)
for i in range(len(sorted_numbers) - 1):
if sorted_numbers[i + 1] - sorted_numbers[i] < threshold:
return True
return False
print(has_close_elements([1.0, 2.0, 3.0], 0.5))
print(has_close_elements([1.0, 2.8, 3.0, 4.0, 5.0, 2.0], 0.3))
```var sortedNumbers = numbers.sorted() // variable 'sortedNumbers' was never mutated; consider changing to 'let' constantfunc hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
for i in 0..<numbers.count {
for j in i+1..<numbers.count {
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 i+1..<numbers.count {
if abs(numbers[i] - numbers[j]) < threshold {
return true
}
}
}
return false
}
`````````python
# Check if in given array of numbers, are any two numbers closer to each other than
# given threshold.
# hasCloseElements([1.0, 2.0, 3.0], 0.5) == False
# hasCloseElements([1.0, 2.8, 3.0, 4.0, 5.0, 2.0], 0.3) == True
def hasCloseElements(numbers, threshold):
for i in range(len(numbers)):
for j in range(i+1, len(numbers)):
if abs(numbers[i] - numbers[j]) < threshold:
return True
return False
print(hasCloseElements([1.0, 2.0, 3.0], 0.5))
print(hasCloseElements([1.0, 2.8, 3.0, 4.0, 5.0, 2.0], 0.3))
```func hasCloseElements(numbers: [Double], threshold: Double) -> Bool {
for i in 0..<numbers.count {
for j in i+1..<numbers.count {
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 i+1..<numbers.count {
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 i+1..<numbers.count {
if abs(numbers[i] - numbers[j]) < threshold {
return true
}
}
}
return false
}
```func separateParenGroups(parenString: String) -> [String] {
var stack = [String]()
var result = [String]()
var currentString = ""
for char in parenString.replacingOccurrences(of: " ", with: "") {
if char == "(" {
if !currentString.isEmpty {
stack.append(currentString)
currentString = ""
}
currentString += char
} else if char == ")" {
currentString += char
if stack.isEmpty {
result.append(currentString)
currentString = ""
} else {
currentString = stack.removeLast() + currentString
}
}
}
return result
}```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 stack = [String]()
var result = [String]()
var currentString = ""
for char in parenString.replacingOccurrences(of: " ", with: "") {
if char == "(" {
if !currentString.isEmpty {
stack.append(currentString)
currentString = ""
}
currentString += char
} else if char == ")" {
currentString += char
if stack.isEmpty {
result.append(currentString)
currentString = ""
} else {
currentString = stack.removeLast() + currentString
}
}
}
return result
}
``````
```swift
// Testing the function
separateParenGroups(parenString: "( ) (( )) (( )( ))")
```currentString += char // cannot convert value of type 'Character' to expected argument type 'String'currentString += char // cannot convert value of type 'Character' to expected argument type 'String'func separateParenGroups(parenString: String) -> [String] {
var stack = [String]()
var result = [String]()
var currentString = ""
for char in parenString.replacingOccurrences(of: " ", with: "") {
if char == "(" {
if !currentString.isEmpty {
stack.append(currentString)
currentString = ""
}
currentString += char
} else if char == ")" {
currentString += char
if stack.isEmpty {
result.append(currentString)
currentString = ""
} else {
currentString = stack.removeLast() + currentString
}
}
}
return result
}```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 stack = [String]()
var result = [String]()
var currentString = ""
for char in parenString.replacingOccurrences(of: " ", with: "") {
if char == "(" {
if !currentString.isEmpty {
stack.append(currentString)
currentString = ""
}
currentString += char
} else if char == ")" {
currentString += char
if stack.isEmpty {
result.append(currentString)
currentString = ""
} else {
currentString = stack.removeLast() + currentString
}
}
}
return result
}
`````````python
def separateParenGroups(parenString):
stack = []
result = []
currentString = ""
for char in parenString.replace(" ", ""):
if char == "(":
if currentString != "":
stack.append(currentString)
currentString = ""
currentString += char
elif char == ")":
currentString += char
if not stack:
result.append(currentString)
currentString = ""
else:
currentString = stack.pop() + currentString
return result
print(separateParenGroups("( ) (( )) (( )( ))"))
```currentString += char // cannot convert value of type 'Character' to expected argument type 'String'currentString += char // cannot convert value of type 'Character' to expected argument type 'String'func separateParenGroups(parenString: String) -> [String] {
var result = [String]()
var stack = [String]()
var currentString = ""
for char in parenString.replacingOccurrences(of: " ", with: "") {
if char == "(" {
if !currentString.isEmpty {
result.append(currentString)
currentString = ""
}
stack.append(String(char))
} else if char == ")" {
stack.removeLast()
currentString.append(char)
if stack.isEmpty {
result.append(currentString)
currentString = ""
}
} else {
currentString.append(char)
}
}
return result
}```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 result = [String]()
var stack = [String]()
var currentString = ""
for char in parenString.replacingOccurrences(of: " ", with: "") {
if char == "(" {
if !currentString.isEmpty {
result.append(currentString)
currentString = ""
}
stack.append(String(char))
} else if char == ")" {
stack.removeLast()
currentString.append(char)
if stack.isEmpty {
result.append(currentString)
currentString = ""
}
} else {
currentString.append(char)
}
}
return result
}
``````
```python
def separate_paren_groups(paren_string):
result = []
stack = []
current_string = ""
for char in paren_string.replace(" ", ""):
if char == "(":
if current_string:
result.append(current_string)
current_string = ""
stack.append(char)
elif char == ")":
stack.pop()
current_string += char
if not stack:
result.append(current_string)
current_string = ""
else:
current_string += char
return result
``` // XCTAssertTrue failedfunc separateParenGroups(parenString: String) -> [String] {
var result = [String]()
var stack = [String]()
var currentString = ""
for char in parenString.replacingOccurrences(of: " ", with: "") {
if char == "(" {
if !currentString.isEmpty {
result.append(currentString)
currentString = ""
}
stack.append(String(char))
} else if char == ")" {
stack.removeLast()
currentString += String(char)
if stack.isEmpty {
result.append(currentString)
currentString = ""
}
} else {
currentString += String(char)
}
}
return result
}```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 result = [String]()
var stack = [String]()
var currentString = ""
for char in parenString.replacingOccurrences(of: " ", with: "") {
if char == "(" {
if !currentString.isEmpty {
result.append(currentString)
currentString = ""
}
stack.append(String(char))
} else if char == ")" {
stack.removeLast()
currentString += String(char)
if stack.isEmpty {
result.append(currentString)
currentString = ""
}
} else {
currentString += String(char)
}
}
return result
}
``````
```python
def separate_paren_groups(paren_string):
result = []
stack = []
current_string = ""
for char in paren_string.replace(" ", ""):
if char == "(":
if current_string:
result.append(current_string)
current_string = ""
stack.append(char)
elif char == ")":
stack.pop()
current_string += char
if not stack:
result.append(current_string)
current_string = ""
else:
current_string += char
return result
``` // XCTAssertTrue failedfunc separateParenGroups(parenString: String) -> [String] {
var result = [String]()
var stack = [Character]()
var currentGroup = ""
for char in parenString.replacingOccurrences(of: " ", with: "") {
if char == "(" {
if !stack.isEmpty {
currentGroup += String(char)
}
stack.append(char)
} else if char == ")" {
stack.removeLast()
currentGroup += String(char)
if stack.isEmpty {
result.append(currentGroup)
currentGroup = ""
}
}
}
return result
}```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 result = [String]()
var stack = [Character]()
var currentGroup = ""
for char in parenString.replacingOccurrences(of: " ", with: "") {
if char == "(" {
if !stack.isEmpty {
currentGroup += String(char)
}
stack.append(char)
} else if char == ")" {
stack.removeLast()
currentGroup += String(char)
if stack.isEmpty {
result.append(currentGroup)
currentGroup = ""
}
}
}
return result
}
`````````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 result = [String]()
var stack = [Character]()
var currentGroup = ""
for char in parenString.replacingOccurrences(of: " ", with: "") {
if char == "(" {
if !stack.isEmpty {
currentGroup += String(char)
}
stack.append(char)
} else if char == ")" {
stack.removeLast()
currentGroup += String(char)
if stack.isEmpty {
result.append(currentGroup)
currentGroup = ""
}
}
}
return result
}
separateParenGroups(parenString: "( ) (( )) (( )( ))")
``` // XCTAssertTrue failedfunc separateParenGroups(parenString: String) -> [String] {
var result: [String] = []
var stack: [String] = []
var currentString = ""
for char in parenString {
if char == "(" {
if !currentString.isEmpty {
stack.append(currentString)
currentString = ""
}
stack.append("(")
} else if char == ")" {
stack.append(")")
if stack.count % 2 == 0 {
let last = stack.removeLast()
var temp = last
while !stack.isEmpty {
temp = stack.removeLast() + temp
if temp.hasPrefix("(") {
break
}
}
currentString = temp + last
}
}
}
while !stack.isEmpty {
let last = stack.removeLast()
var temp = last
while !stack.isEmpty {
temp = stack.removeLast() + temp
if temp.hasPrefix("(") {
break
}
}
currentString = temp + last
result.append(currentString)
}
return result
}```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 result: [String] = []
var stack: [String] = []
var currentString = ""
for char in parenString {
if char == "(" {
if !currentString.isEmpty {
stack.append(currentString)
currentString = ""
}
stack.append("(")
} else if char == ")" {
stack.append(")")
if stack.count % 2 == 0 {
let last = stack.removeLast()
var temp = last
while !stack.isEmpty {
temp = stack.removeLast() + temp
if temp.hasPrefix("(") {
break
}
}
currentString = temp + last
}
}
}
while !stack.isEmpty {
let last = stack.removeLast()
var temp = last
while !stack.isEmpty {
temp = stack.removeLast() + temp
if temp.hasPrefix("(") {
break
}
}
currentString = temp + last
result.append(currentString)
}
return result
}
``````
```swift
// Test cases
print(separateParenGroups(parenString: "( ) (( )) (( )( ))")) // ["()", "(())", "(()())"]
print(separateParenGroups(parenString: "(( )) (( )( ))")) // ["(())", "(()())"]
print(separateParenGroups(parenString: "( ) (( )( ))")) // ["()", "(()())"]
print(separateParenGroups(parenString: "( ) (( )( )) ( )")) // ["()", "(()())", "()"]
print(separateParenGroups(parenString: "( ) (( )( )) ( ) (( )( ))")) // ["()", "(()())", "()", "(()())"]
``` // XCTAssertTrue failedfunc separateParenGroups(parenString: String) -> [String] {
var result = [String]()
var stack = [String]()
var currentString = ""
for char in parenString.replacingOccurrences(of: " ", with: "") {
if char == "(" {
if !currentString.isEmpty {
result.append(currentString)
currentString = ""
}
stack.append(String(char))
} else if char == ")" {
stack.removeLast()
currentString += String(char)
if stack.isEmpty {
result.append(currentString)
currentString = ""
}
} else {
currentString += String(char)
}
}
return result
}```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 result = [String]()
var stack = [String]()
var currentString = ""
for char in parenString.replacingOccurrences(of: " ", with: "") {
if char == "(" {
if !currentString.isEmpty {
result.append(currentString)
currentString = ""
}
stack.append(String(char))
} else if char == ")" {
stack.removeLast()
currentString += String(char)
if stack.isEmpty {
result.append(currentString)
currentString = ""
}
} else {
currentString += String(char)
}
}
return result
}
`````` // XCTAssertTrue failedfunc separateParenGroups(parenString: String) -> [String] {
var result = [String]()
var stack = [String]()
var currentString = ""
for char in parenString.replacingOccurrences(of: " ", with: "") {
if char == "(" {
if !currentString.isEmpty {
result.append(currentString)
currentString = ""
}
stack.append(String(char))
} else if char == ")" {
stack.removeLast()
currentString.append(char)
if stack.isEmpty {
result.append(currentString)
currentString = ""
}
} else {
currentString.append(char)
}
}
return result
}```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 result = [String]()
var stack = [String]()
var currentString = ""
for char in parenString.replacingOccurrences(of: " ", with: "") {
if char == "(" {
if !currentString.isEmpty {
result.append(currentString)
currentString = ""
}
stack.append(String(char))
} else if char == ")" {
stack.removeLast()
currentString.append(char)
if stack.isEmpty {
result.append(currentString)
currentString = ""
}
} else {
currentString.append(char)
}
}
return result
}
``````
```swift
separateParenGroups(parenString: "( ) (( )) (( )( ))")
``` // XCTAssertTrue failedfunc separateParenGroups(parenString: String) -> [String] {
var result = [String]()
var stack = [String]()
var currentString = ""
for char in parenString.replacingOccurrences(of: " ", with: "") {
if char == "(" {
if !currentString.isEmpty {
result.append(currentString)
currentString = ""
}
stack.append(String(char))
} else if char == ")" {
stack.removeLast()
currentString += stack.last ?? ""
if stack.isEmpty {
result.append(currentString)
currentString = ""
}
}
}
return result
}```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 result = [String]()
var stack = [String]()
var currentString = ""
for char in parenString.replacingOccurrences(of: " ", with: "") {
if char == "(" {
if !currentString.isEmpty {
result.append(currentString)
currentString = ""
}
stack.append(String(char))
} else if char == ")" {
stack.removeLast()
currentString += stack.last ?? ""
if stack.isEmpty {
result.append(currentString)
currentString = ""
}
}
}
return result
}
``````
```swift
separateParenGroups(parenString: "( ) (( )) (( )( ))")
``` // XCTAssertTrue failedfunc separateParenGroups(parenString: String) -> [String] {
var result: [String] = []
var stack: [String] = []
var currentString = ""
for char in parenString.replacingOccurrences(of: " ", with: "") {
if char == "(" {
if !currentString.isEmpty {
stack.append(currentString)
currentString = ""
}
stack.append("(")
} else if char == ")" {
stack.append(")")
if stack.count % 2 == 0 {
let last = stack.removeLast()
var temp = last
while !stack.isEmpty {
temp = stack.removeLast() + temp
if temp.hasPrefix("(") {
break
}
}
currentString = temp + last
}
}
}
while !stack.isEmpty {
let last = stack.removeLast()
var temp = last
while !stack.isEmpty {
temp = stack.removeLast() + temp
if temp.hasPrefix("(") {
break
}
}
currentString = temp + last
result.append(currentString)
}
return result
}```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 result: [String] = []
var stack: [String] = []
var currentString = ""
for char in parenString.replacingOccurrences(of: " ", with: "") {
if char == "(" {
if !currentString.isEmpty {
stack.append(currentString)
currentString = ""
}
stack.append("(")
} else if char == ")" {
stack.append(")")
if stack.count % 2 == 0 {
let last = stack.removeLast()
var temp = last
while !stack.isEmpty {
temp = stack.removeLast() + temp
if temp.hasPrefix("(") {
break
}
}
currentString = temp + last
}
}
}
while !stack.isEmpty {
let last = stack.removeLast()
var temp = last
while !stack.isEmpty {
temp = stack.removeLast() + temp
if temp.hasPrefix("(") {
break
}
}
currentString = temp + last
result.append(currentString)
}
return result
}
``````
```swift
// Test cases
print(separateParenGroups(parenString: "( ) (( )) (( )( ))")) // ["()", "(())", "(()())"]
print(separateParenGroups(parenString: "(( )) (( )( ))")) // ["(())", "(()())"]
print(separateParenGroups(parenString: "( ) (( )( ))")) // ["()", "(()())"]
print(separateParenGroups(parenString: "( ) ( )")) // ["()", "()"]
print(separateParenGroups(parenString: "( ) (( ))")) // ["()", "(())"]
print(separateParenGroups(parenString: "( ) (( )( ))")) // ["()", "(()())"]
print(separateParenGroups(parenString: "( ) (( )( ))")) // ["()", "(()())"]
print(separateParenGroups(parenString: "( ) (( )( ))")) // ["()", "(()())"]
print(separateParenGroups(parenString: "( ) (( )( ))")) // ["()", "(()())"]
print(separateParenGroups(parenString: "( ) (( )( ))")) // ["()", "(()())"]
``` // XCTAssertTrue failedfunc truncateNumber(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}
func getIntegerPart(number: Double) -> Int {
return Int(number)
}
func getDecimalPart(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}```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 {
let intPart = Int(number)
return number - Double(intPart)
}
// 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 integer part of the number.
// getIntegerPart(number: 3.5) == 3
func getIntegerPart(number: Double) -> Int {
return Int(number)
}
// 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.
// getDecimalPart(number: 3.5) == 0.5
func getDecimalPart(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}
``````func truncateNumber(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}
func testTruncateNumber() {
print(truncateNumber(number: 3.5)) // 0.5
}```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 {
let intPart = Int(number)
return number - Double(intPart)
}
func testTruncateNumber() {
print(truncateNumber(number: 3.5)) // 0.5
}
testTruncateNumber()
``````func truncateNumber(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}
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 {
let intPart = Int(number)
return number - Double(intPart)
}
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 {
let intPart = Int(number)
return number - Double(intPart)
}
func truncateNumber(number: Double) -> Double {
return number - Double(Int(number))
}
```func truncateNumber(number: Double) -> Double { // invalid redeclaration of 'truncateNumber(number:)'func truncateNumber(number: Double) -> Double {
return number - Double(Int(number))
}
func integerPart(number: Double) -> Int {
return Int(number)
}
func decimalPart(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))
}
// 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 integer part of the number.
// integerPart(number: 3.5) == 3
func integerPart(number: Double) -> Int {
return Int(number)
}
// 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.
// decimalPart(number: 3.5) == 0.5
func decimalPart(number: Double) -> Double {
return number - Double(Int(number))
}
// 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 integer part of the number.
// integerPart(number: 3.5) == 3
func integerPart(number: Double) -> Int {
return Int(number)
}
// 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.
// decimalPart(number: 3.5) == 0.5
func decimalPart(number: Double) -> Double {
return number - Double(Int(number))
}
// 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 integer part of the number.
// integerPart(number: 3.5) == 3
func integerPart(number: Double) -> Int {
return Int(number)
}
// 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.
// decimalPart(number: 3.5) == 0.5
func decimalPart(number: Double) -> Double {
return number - Double(Int(number))
}
// 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 integer part of the number.
// integerPart(number: 3.5) == 3
func integerPart(number: Double) -> Int {
return Int(number)
}
// 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.
// decimalPart(number: 3.5) == 0.5
func decimalPart(number: Double) -> Double {
return number - Double(Int(number))
}
// 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 integer part of the number.
// integerPart(number: 3.5) == 3
func integerPart(number: Double) -> Int {
return Int(number)
}
// 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.
// decimalPart(number: 3.5) == 0.5
func decimalPart(number: Double) -> Double {
return number - Double(Int(number))
}
// 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 thefunc truncateNumber(number: Double) -> Double {
let integerPart = Int(number)
return number - Double(integerPart)
}
func getIntegerPart(number: Double) -> Int {
return Int(number)
}
func getDecimalPartPercentage(number: Double) -> Double {
let decimalPart = truncateNumber(number: number)
return decimalPart * 100
}
func getIntegerPartPercentage(number: Double) -> Double {
let integerPart = getIntegerPart(number: number)
return Double(integerPart) * 100
}```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 {
let integerPart = Int(number)
return number - Double(integerPart)
}
// 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 integer part of the number.
// getIntegerPart(number: 3.5) == 3
func getIntegerPart(number: Double) -> Int {
return Int(number)
}
// 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 as a percentage.
// getDecimalPartPercentage(number: 3.5) == 50.0
func getDecimalPartPercentage(number: Double) -> Double {
let decimalPart = truncateNumber(number: number)
return decimalPart * 100
}
// 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 integer part of the number as a percentage.
// getIntegerPartPercentage(number: 3.5) == 300.0
func getIntegerPartPercentage(number: Double) -> Double {
let integerPart = getIntegerPart(number: number)
return Double(integerPart) * 100
}
``````
```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 {
let integerPart = Int(number)
return number - Double(integerPart)
}
// 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 integer part of the number.
// getIntegerPart(number: 3.5) == 3
func getIntegerPart(number: Double) -> Int {
return Int(number)
}
// 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 as a percentage.
// getDecimalPartPercentage(number: 3.5) == 50.0
func getDecimalPartPercentage(number: Double) -> Double {
let decimalPart = truncateNumber(number: number)
return decimalPart * 100
}
// 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 integer part of the number as a percentage.
// getIntegerPartPercentage(number: 3.5) == 300.0
func getIntegerPartPercentage(number: Double) -> Double {
let integerPart = getIntegerPart(number: number)
return Double(integerPart) * 100
}
```func truncateNumber(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}
func testTruncateNumber() {
print(truncateNumber(number: 3.5)) // 0.5
print(truncateNumber(number: 10.1)) // 0.1
print(truncateNumber(number: 0.99)) // 0.99
}```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 {
let intPart = Int(number)
return number - Double(intPart)
}
func testTruncateNumber() {
print(truncateNumber(number: 3.5)) // 0.5
print(truncateNumber(number: 10.1)) // 0.1
print(truncateNumber(number: 0.99)) // 0.99
}
testTruncateNumber()
``````
```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 {
let intPart = Int(number)
return number - Double(intPart)
}
func testTruncateNumber() {
print(truncateNumber(number: 3.5)) // 0.5
print(truncateNumber(number: 10.1)) // 0.1
print(truncateNumber(number: 0.99)) // 0.99
}
testTruncateNumber()
```func truncateNumber(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}
func getIntegerPart(number: Double) -> Int {
return Int(number)
}
func getDecimalPart(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}```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 {
let intPart = Int(number)
return number - Double(intPart)
}
// 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 integer part of the number.
// getIntegerPart(number: 3.5) == 3
func getIntegerPart(number: Double) -> Int {
return Int(number)
}
// 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.
// getDecimalPart(number: 3.5) == 0.5
func getDecimalPart(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}
// 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.
// getDecimalPart(number: 3.5) == 0.5
func getDecimalPart(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}
// 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.
// getDecimalPart(number: 3.5) == 0.5
func getDecimalPart(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}
// 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.
// getDecimalPart(number: 3.5) == 0.5
func getDecimalPart(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}
// 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.
// getDecimalPart(number: 3.5) == 0.5
func getDecimalPart(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}
// 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.
// getDecimalPart(number: 3.5) == 0.5
func getDecimalPart(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}
// 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.
// getDecimalPart(number: 3.5) == 0.5
func getDecimalPart(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}
// 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.
// getDecimalPart(number: 3.5) == 0.5
func getDecimalPart(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}
// Given a positive floating point number, itfunc truncateNumber(number: Double) -> Double {
let integerPart = Int(number)
return number - Double(integerPart)
}
func integerPartOfNumber(number: Double) -> Int {
return Int(number)
}
func decimalPartAsPercentage(number: Double) -> Double {
let decimalPart = truncateNumber(number: number)
return decimalPart * 100
}
func integerPartAsPercentage(number: Double) -> Double {
let integerPart = integerPartOfNumber(number: number)
return Double(integerPart) * 100
}```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 {
let integerPart = Int(number)
return number - Double(integerPart)
}
// 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 integer part of the number.
// integerPartOfNumber(number: 3.5) == 3
func integerPartOfNumber(number: Double) -> Int {
return Int(number)
}
// 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 as a percentage.
// decimalPartAsPercentage(number: 3.5) == 50.0
func decimalPartAsPercentage(number: Double) -> Double {
let decimalPart = truncateNumber(number: number)
return decimalPart * 100
}
// 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 integer part of the number as a percentage.
// integerPartAsPercentage(number: 3.5) == 300.0
func integerPartAsPercentage(number: Double) -> Double {
let integerPart = integerPartOfNumber(number: number)
return Double(integerPart) * 100
}
``````
```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 {
let integerPart = Int(number)
return number - Double(integerPart)
}
// 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 integer part of the number.
// integerPartOfNumber(number: 3.5) == 3
func integerPartOfNumber(number: Double) -> Int {
return Int(number)
}
// 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 as a percentage.
// decimalPartAsPercentage(number: 3.5) == 50.0
func decimalPartAsPercentage(number: Double) -> Double {
let decimalPart = truncateNumber(number: number)
return decimalPart * 100
}
// 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 integer part of the number as a percentage.
// integerPartAsPercentage(number: 3.5) == 300.0
func integerPartAsPercentage(number: Double) -> Double {
let integerPart = integerPartOfNumber(number: number)
return Double(integerPart) * 100
}
```func truncateNumber(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}
func getIntegerPart(number: Double) -> Int {
return Int(number)
}
func getDecimalPart(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}```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 {
let intPart = Int(number)
return number - Double(intPart)
}
// 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 integer part of the number.
// getIntegerPart(number: 3.5) == 3
func getIntegerPart(number: Double) -> Int {
return Int(number)
}
// 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.
// getDecimalPart(number: 3.5) == 0.5
func getDecimalPart(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}
``````
```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 {
let intPart = Int(number)
return number - Double(intPart)
}
// 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 integer part of the number.
// getIntegerPart(number: 3.5) == 3
func getIntegerPart(number: Double) -> Int {
return Int(number)
}
// 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.
// getDecimalPart(number: 3.5) == 0.5
func getDecimalPart(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}
```func truncateNumber(number: Double) -> Double {
let intPart = Int(number)
return number - Double(intPart)
}
func testTruncateNumber() {
print(truncateNumber(number: 3.5)) // 0.5
print(truncateNumber(number: 10.123)) // 0.123
print(truncateNumber(number: 0.999)) // 0.999
}```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 {
let intPart = Int(number)
return number - Double(intPart)
}
func testTruncateNumber() {
print(truncateNumber(number: 3.5)) // 0.5
print(truncateNumber(number: 10.123)) // 0.123
print(truncateNumber(number: 0.999)) // 0.999
}
testTruncateNumber()
``````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
}
``````
```swift
// Testing the function
print(belowZero(operations: [1, 2, 3])) // false
print(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
}```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
}
``````
```swift
// Testing the function
print(belowZero(operations: [1, 2, 3])) // false
print(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
}```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
}
`````````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
}
```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
}
`````````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
}
// Test cases
print(belowZero(operations: [1, 2, 3])) // false
print(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
}```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
}
`````````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
}
```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
}
`````````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
}
// Test cases
print(belowZero(operations: [1, 2, 3])) // false
print(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
}```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
}
`````````swift
// Testing the function with some test cases
print(belowZero(operations: [1, 2, 3])) // Expected output: false
print(belowZero(operations: [1, 2, -4, 5])) // Expected output: true
```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
}
`````````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
}
```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
}
`````````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
}
```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
}
`````````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
}
```func meanAbsoluteDeviation(numbers: [Double]) -> Double {
let mean = numbers.reduce(0, +) / Double(numbers.count)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.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)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.count)
}
// Test the function
let numbers = [1.0, 2.0, 3.0, 4.0]
print(meanAbsoluteDeviation(numbers: numbers))
`````````python
def mean_absolute_deviation(numbers):
mean = sum(numbers) / len(numbers)
differences = [abs(n - mean) for n in numbers]
return sum(differences) / len(differences)
numbers = [1.0, 2.0, 3.0, 4.0]
print(mean_absolute_deviation(numbers))
```func meanAbsoluteDeviation(numbers: [Double]) -> Double {
let mean = numbers.reduce(0, +) / Double(numbers.count)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.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)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.count)
}
// Test
meanAbsoluteDeviation(numbers: [1.0, 2.0, 3.0, 4.0]) // 1.0
`````````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)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.count)
}
// Test
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)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.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)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.count)
}
meanAbsoluteDeviation(numbers: [1.0, 2.0, 3.0, 4.0])
``````func meanAbsoluteDeviation(numbers: [Double]) -> Double {
let mean = numbers.reduce(0, +) / Double(numbers.count)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.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)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.count)
}
`````````python
# 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
def meanAbsoluteDeviation(numbers):
mean = sum(numbers) / len(numbers)
differences = [abs(x - mean) for x in numbers]
return sum(differences) / len(differences)
meanAbsoluteDeviation([1.0, 2.0, 3.0, 4.0])
```func meanAbsoluteDeviation(numbers: [Double]) -> Double {
let mean = numbers.reduce(0, +) / Double(numbers.count)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.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)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.count)
}
// Test the function
let numbers = [1.0, 2.0, 3.0, 4.0]
print(meanAbsoluteDeviation(numbers: numbers)) // Output: 1.0
`````````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)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.count)
}
// Test the function
let numbers = [1.0, 2.0, 3.0, 4.0]
print(meanAbsoluteDeviation(numbers: numbers)) // Output: 1.0
```func meanAbsoluteDeviation(numbers: [Double]) -> Double {
let mean = numbers.reduce(0, +) / Double(numbers.count)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.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)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.count)
}
// Test the function
let numbers = [1.0, 2.0, 3.0, 4.0]
print(meanAbsoluteDeviation(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)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.count)
}
// Test the function
let numbers = [1.0, 2.0, 3.0, 4.0]
print(meanAbsoluteDeviation(numbers: numbers))
```func meanAbsoluteDeviation(numbers: [Double]) -> Double {
let mean = numbers.reduce(0, +) / Double(numbers.count)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.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)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.count)
}
meanAbsoluteDeviation(numbers: [1.0, 2.0, 3.0, 4.0])
``````func meanAbsoluteDeviation(numbers: [Double]) -> Double {
let mean = numbers.reduce(0, +) / Double(numbers.count)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.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)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.count)
}
meanAbsoluteDeviation(numbers: [1.0, 2.0, 3.0, 4.0])
``````func meanAbsoluteDeviation(numbers: [Double]) -> Double {
let mean = numbers.reduce(0, +) / Double(numbers.count)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.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)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.count)
}
meanAbsoluteDeviation(numbers: [1.0, 2.0, 3.0, 4.0])
``````func meanAbsoluteDeviation(numbers: [Double]) -> Double {
let mean = numbers.reduce(0, +) / Double(numbers.count)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.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)
let differences: [Double] = numbers.map { abs($0 - mean) }
return differences.reduce(0, +) / Double(differences.count)
}
meanAbsoluteDeviation(numbers: [1.0, 2.0, 3.0, 4.0])
``````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
}
// Test cases
print(intersperse(numbers: [], delimeter: 4)) // []
print(intersperse(numbers: [1, 2, 3], delimeter: 4)) // [1, 4, 2, 4, 3]
`````````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
}
// Test cases
print(intersperse(numbers: [], delimeter: 4)) // []
print(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 {
result.append(numbers[i])
if i < 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 i in 0..<numbers.count {
result.append(numbers[i])
if i < numbers.count - 1 {
result.append(delimeter)
}
}
return result
}
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
var result = [Int]()
for i in 0..<numbers.count {
result.append(numbers[i])
if i < numbers.count - 1 {
result.append(delimeter)
}
}
return result
}
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
var result = [Int]()
for i in 0..<numbers.count {
result.append(numbers[i])
if i < numbers.count - 1 {
result.append(delimeter)
}
}
return result
}
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
var result = [Int]()
for i in 0..<numbers.count {
result.append(numbers[i])
if i < numbers.count - 1 {
result.append(delimeter)
}
}
return result
}
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
var result = [Int]()
for i in 0..<numbers.count {
result.append(numbers[i])
if i < numbers.count - 1 {
result.append(delimeter)
}
}
return result
}
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
var result = [Int]()
for i in 0..<numbers.count {
result.append(numbers[i])
if i < numbers.count - 1 {
result.append(delimeter)
}
}
return result
}
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
var result = [Int]()
for i in 0..<numbers.count {
result.append(numbers[i])
if i < numbers.count - 1 {
result.append(delimeter)
}
}
return result
}
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
var result = [Int]()
for i in 0..<numbers.count {
result.append(numbers[i])
if i < numbers.count - 1 {
result.append(delimeter)
}
}
return result
}
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
var result = [Int]()
for i in 0..<numbers.count {
result.append(numbers[i])
if i < numbers.count - 1 {
result.append(delimeter)
}
}
return result
}
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
var result = [Int]()
for i in 0..<numbers.count {
result.append(numbers[i])
if i < numbers.count - 1 {
result.append(delimeter)
}
}
return result
}
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
var result = [Int]()
for i in 0..<numbers.count {
result.append(numbers[i])
if i < numbers.count - 1 {
result.append(delimeter)
}
}
return result
}
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
var result = [Int]()
forfunc 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
}
intersperse(numbers: [1, 2, 3], delimeter: 4)
``````func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
var result = [Int]()
for i in 0..<numbers.count {
result.append(numbers[i])
if i != 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 i in 0..<numbers.count {
result.append(numbers[i])
if i != 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 i in 0..<numbers.count {
result.append(numbers[i])
if i != numbers.count - 1 {
result.append(delimeter)
}
}
return result
}
// Test cases
print(intersperse(numbers: [], delimeter: 4)) // []
print(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
}```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
}
intersperse(numbers: [1, 2, 3], delimeter: 4)
``````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
}
``````
```swift
// Testing the intersperse function
// Test 1: Empty array
let test1 = intersperse(numbers: [], delimeter: 4)
print(test1) // Expected output: []
// Test 2: Array with one element
let test2 = intersperse(numbers: [1], delimeter: 4)
print(test2) // Expected output: [1]
// Test 3: Array with multiple elements
let test3 = intersperse(numbers: [1, 2, 3], delimeter: 4)
print(test3) // Expected output: [1, 4, 2, 4, 3]
// Test 4: Array with negative numbers
let test4 = intersperse(numbers: [-1, -2, -3], delimeter: 4)
print(test4) // Expected output: [-1, 4, -2, 4, -3]
// Test 5: Array with zero
let test5 = intersperse(numbers: [0, 1, 2], delimeter: 4)
print(test5) // Expected output: [0, 4, 1, 4, 2]
```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
}
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
}
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
}
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
}
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
}
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
}
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
}
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
}
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
}
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
}
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
}
func intersperse(numbers: [Int], delimeter: Int) -> [Int] {
var result = [Int]()
forfunc 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
}
// Test cases
print(intersperse(numbers: [], delimeter: 4)) // []
print(intersperse(numbers: [1, 2, 3], delimeter: 4)) // [1, 4, 2, 4, 3]
`````````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
}
// Test cases
print(intersperse(numbers: [], delimeter: 4)) // []
print(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
}```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
}
intersperse(numbers: [1, 2, 3], delimeter: 4)
``````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
}
// Test cases
print(intersperse(numbers: [], delimeter: 4)) // []
print(intersperse(numbers: [1, 2, 3], delimeter: 4)) // [1, 4, 2, 4, 3]
`````````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
}
// Test cases
print(intersperse(numbers: [], delimeter: 4)) // []
print(intersperse(numbers: [1, 2, 3], delimeter: 4)) // [1, 4, 2, 4, 3]
```func parseNestedParens(parenString: String) -> [Int] {
var result = [Int]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
if currentDepth > maxDepth {
maxDepth = currentDepth
}
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
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]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
if currentDepth > maxDepth {
maxDepth = currentDepth
}
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
return result
}
`````````swift
func parseNestedParens(parenString: String) -> [Int] {
var result = [Int]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
if currentDepth > maxDepth {
maxDepth = currentDepth
}
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
return result
}
parseNestedParens(parenString: "(()()) ((())) () ((())()())") // [2, 3, 1, 3]
```func parseNestedParens(parenString: String) -> [Int] {
var result = [Int]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
if currentDepth > maxDepth {
maxDepth = currentDepth
}
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
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]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
if currentDepth > maxDepth {
maxDepth = currentDepth
}
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
return result
}
``````func parseNestedParens(parenString: String) -> [Int] {
var result = [Int]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
if currentDepth > maxDepth {
maxDepth = currentDepth
}
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
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]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
if currentDepth > maxDepth {
maxDepth = currentDepth
}
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
return result
}
``````
```swift
// Test the function
parseNestedParens(parenString: "(()()) ((())) () ((())()())")
```func parseNestedParens(parenString: String) -> [Int] {
var result = [Int]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
if currentDepth > maxDepth {
maxDepth = currentDepth
}
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
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]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
if currentDepth > maxDepth {
maxDepth = currentDepth
}
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
return result
}
``````func parseNestedParens(parenString: String) -> [Int] {
var result = [Int]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
if currentDepth > maxDepth {
maxDepth = currentDepth
}
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
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]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
if currentDepth > maxDepth {
maxDepth = currentDepth
}
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
return result
}
``````
```swift
// Test the function
let testString = "(()()) ((())) () ((())()())"
let result = parseNestedParens(parenString: testString)
print(result) // Output: [2, 3, 1, 3]
```func parseNestedParens(parenString: String) -> [Int] {
var result = [Int]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
if currentDepth > maxDepth {
maxDepth = currentDepth
}
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
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]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
if currentDepth > maxDepth {
maxDepth = currentDepth
}
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
return result
}
`````````swift
func parseNestedParens(parenString: String) -> [Int] {
var result = [Int]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
if currentDepth > maxDepth {
maxDepth = currentDepth
}
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
return result
}
parseNestedParens(parenString: "(()()) ((())) () ((())()())")
```func parseNestedParens(parenString: String) -> [Int] {
var result = [Int]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
if currentDepth > maxDepth {
maxDepth = currentDepth
}
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
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]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
if currentDepth > maxDepth {
maxDepth = currentDepth
}
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
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]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
if currentDepth > maxDepth {
maxDepth = currentDepth
}
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
return result
}
parseNestedParens(parenString: "(()()) ((())) () ((())()())")
```func parseNestedParens(parenString: String) -> [Int] {
var result = [Int]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
if currentDepth > maxDepth {
maxDepth = currentDepth
}
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
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]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
if currentDepth > maxDepth {
maxDepth = currentDepth
}
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
return result
}
``````
```swift
// Test the function with the given example
let parenString = "(()()) ((())) () ((())()())"
let result = parseNestedParens(parenString: parenString)
print(result) // Output: [2, 3, 1, 3]
```func parseNestedParens(parenString: String) -> [Int] {
var result = [Int]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
maxDepth = max(maxDepth, currentDepth)
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
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]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
maxDepth = max(maxDepth, currentDepth)
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
return result
}
``````
```swift
// Test the function with the given example
let parenString = "(()()) ((())) () ((())()())"
let result = parseNestedParens(parenString: parenString)
print(result) // Output: [2, 3, 1, 3]
```func parseNestedParens(parenString: String) -> [Int] {
var result = [Int]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
maxDepth = max(maxDepth, currentDepth)
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
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]()
let groups = parenString.components(separatedBy: " ")
for group in groups {
var maxDepth = 0
var currentDepth = 0
for char in group {
if char == "(" {
currentDepth += 1
maxDepth = max(maxDepth, currentDepth)
} else if char == ")" {
currentDepth -= 1
}
}
result.append(maxDepth)
}
return result
}
``````
```swift
// Test the function
parseNestedParens(parenString: "(()()) ((())) () ((())()())")
```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) }
}
`````````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) }
}
```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) }
}
// Test cases
print(filterBySubstring(strings: [], substring: "a")) // []
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a")) // ["abc", "bacd", "array"]
`````````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) }
}
// Test cases
print(filterBySubstring(strings: [], substring: "a")) // []
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a")) // ["abc", "bacd", "array"]
```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) }
}
// Test cases
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a"))
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "e"))
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "xyz"))
`````````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) }
}
// Test cases
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a"))
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "e"))
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "xyz"))
```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) }
}
`````````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) }
}
// Test cases
print(filterBySubstring(strings: [], substring: "a")) // []
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a")) // ["abc", "bacd", "array"]
```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) }
}
// Test cases
print(filterBySubstring(strings: [], substring: "a")) // []
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a")) // ["abc", "bacd", "array"]
`````````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) }
}
// Test cases
print(filterBySubstring(strings: [], substring: "a")) // []
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a")) // ["abc", "bacd", "array"]
```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) }
}
// Test cases
print(filterBySubstring(strings: [], substring: "a")) // []
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a")) // ["abc", "bacd", "array"]
`````````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) }
}
// Test cases
print(filterBySubstring(strings: [], substring: "a")) // []
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a")) // ["abc", "bacd", "array"]
```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) }
}
// Test cases
print(filterBySubstring(strings: [], substring: "a")) // []
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a")) // ["abc", "bacd", "array"]
`````````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) }
}
// Test cases
print(filterBySubstring(strings: [], substring: "a")) // []
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a")) // ["abc", "bacd", "array"]
```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) }
}
// Test cases
print(filterBySubstring(strings: [], substring: "a")) // []
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a")) // ["abc", "bacd", "array"]
``````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) }
}
// Test cases
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a"))
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "e"))
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "x"))
`````````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) }
}
// Test cases
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a"))
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "e"))
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "x"))
```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) }
}
// Test cases
print(filterBySubstring(strings: [], substring: "a")) // []
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a")) // ["abc", "bacd", "array"]
`````````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) }
}
// Test cases
print(filterBySubstring(strings: [], substring: "a")) // []
print(filterBySubstring(strings: ["abc", "bacd", "cde", "array"], substring: "a")) // ["abc", "bacd", "array"]
```func sumProduct(numbers: [Int]) -> (Int, Int) {
var sum = 0
var product = 1
for num in numbers {
sum += num
product *= num
}
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 num in numbers {
sum += num
product *= num
}
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 num in numbers {
sum += num
product *= num
}
return (sum, product)
}
// Test cases
print(sumProduct(numbers: [])) // (0, 1)
print(sumProduct(numbers: [1, 2, 3, 4])) // (10, 24)
```func sumProduct(numbers: [Int]) -> (Int, Int) {
var sum = 0
var product = 1
for num in numbers {
sum += num
product *= num
}
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 num in numbers {
sum += num
product *= num
}
return (sum, product)
}
print(sumProduct(numbers: []))
print(sumProduct(numbers: [1, 2, 3, 4]))
``````
```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 num in numbers {
sum += num
product *= num
}
return (sum, product)
}
print(sumProduct(numbers: []))
print(sumProduct(numbers: [1, 2, 3, 4]))
```func sumProduct(numbers: [Int]) -> (Int, Int) {
var sum = 0
var product = 1
for num in numbers {
sum += num
product *= num
}
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 num in numbers {
sum += num
product *= num
}
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 num in numbers {
sum += num
product *= num
}
return (sum, product)
}
// Test cases
print(sumProduct(numbers: [])) // (0, 1)
print(sumProduct(numbers: [1, 2, 3, 4])) // (10, 24)
```func sumProduct(numbers: [Int]) -> (Int, Int) {
var sum = 0
var product = 1
for num in numbers {
sum += num
product *= num
}
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 num in numbers {
sum += num
product *= num
}
return (sum, product)
}
``````
```swift
func sumProduct(numbers: [Int]) -> (Int, Int) {
var sum = 0
var product = 1
for num in numbers {
sum += num
product *= num
}
return (sum, product)
}
// Test cases
print(sumProduct(numbers: [])) // (0, 1)
print(sumProduct(numbers: [1, 2, 3, 4])) // (10, 24)
```func sumProduct(numbers: [Int]) -> (Int, Int) {
var sum = 0
var product = 1
for num in numbers {
sum += num
product *= num
}
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 num in numbers {
sum += num
product *= num
}
return (sum, product)
}
sumProduct(numbers: [1, 2, 3, 4])
``````func sumProduct(numbers: [Int]) -> (Int, Int) {
var sum = 0
var product = 1
for num in numbers {
sum += num
product *= num
}
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 num in numbers {
sum += num
product *= num
}
return (sum, product)
}
``````
```swift
func sumProduct(numbers: [Int]) -> (Int, Int) {
var sum = 0
var product = 1
for num in numbers {
sum += num
product *= num
}
return (sum, product)
}
// Test cases
print(sumProduct(numbers: [])) // (0, 1)
print(sumProduct(numbers: [1, 2, 3, 4])) // (10, 24)
```func sumProduct(numbers: [Int]) -> (Int, Int) {
var sum = 0
var product = 1
for num in numbers {
sum += num
product *= num
}
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 num in numbers {
sum += num
product *= num
}
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 num in numbers {
sum += num
product *= num
}
return (sum, product)
}
// Test cases
print(sumProduct(numbers: [])) // (0, 1)
print(sumProduct(numbers: [1, 2, 3, 4])) // (10, 24)
```func sumProduct(numbers: [Int]) -> (Int, Int) {
var sum = 0
var product = 1
for num in numbers {
sum += num
product *= num
}
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 num in numbers {
sum += num
product *= num
}
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 num in numbers {
sum += num
product *= num
}
return (sum, product)
}
// Test cases
print(sumProduct(numbers: [])) // (0, 1)
print(sumProduct(numbers: [1, 2, 3, 4])) // (10, 24)
```func sumProduct(numbers: [Int]) -> (Int, Int) {
var sum = 0
var product = 1
for num in numbers {
sum += num
product *= num
}
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 num in numbers {
sum += num
product *= num
}
return (sum, product)
}
``````
```swift
// Test cases
print(sumProduct(numbers: [])) // (0, 1)
print(sumProduct(numbers: [1, 2, 3, 4])) // (10, 24)
```func sumProduct(numbers: [Int]) -> (Int, Int) {
var sum = 0
var product = 1
for num in numbers {
sum += num
product *= num
}
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 num in numbers {
sum += num
product *= num
}
return (sum, product)
}
``````
```swift
// Test cases
print(sumProduct(numbers: [])) // (0, 1)
print(sumProduct(numbers: [1, 2, 3, 4])) // (10, 24)
```func rollingMax(numbers: [Int]) -> [Int] {
var result = [Int]()
var maxNum = numbers[0]
result.append(maxNum)
for i in 1..<numbers.count {
if numbers[i] > maxNum {
maxNum = numbers[i]
}
result.append(maxNum)
}
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 maxNum = numbers[0]
result.append(maxNum)
for i in 1..<numbers.count {
if numbers[i] > maxNum {
maxNum = numbers[i]
}
result.append(maxNum)
}
return result
}
let numbers = [1, 2, 3, 2, 3, 4, 2]
let result = rollingMax(numbers: numbers)
print(result)
`````` // Fatal error: Index out of rangefunc rollingMax(numbers: [Int]) -> [Int] {
var result = [Int]()
var max = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
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 = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
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 = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
result.append(max)
}
return result
}
rollingMax(numbers: [1, 2, 3, 2, 3, 4, 2])
``` // Fatal error: Index out of rangefunc rollingMax(numbers: [Int]) -> [Int] {
var result = [Int]()
var max = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
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 = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
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 = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
result.append(max)
}
return result
}
rollingMax(numbers: [1, 2, 3, 2, 3, 4, 2])
``` // Fatal error: Index out of rangefunc rollingMax(numbers: [Int]) -> [Int] {
var result = [Int]()
var max = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
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 = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
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 = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
result.append(max)
}
return result
}
rollingMax(numbers: [1, 2, 3, 2, 3, 4, 2])
``` // Fatal error: Index out of rangefunc rollingMax(numbers: [Int]) -> [Int] {
var result = [Int]()
var max = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
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 = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
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 = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
result.append(max)
}
return result
}
rollingMax(numbers: [1, 2, 3, 2, 3, 4, 2])
``` // Fatal error: Index out of rangefunc rollingMax(numbers: [Int]) -> [Int] {
var result = [Int]()
var max = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
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 = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
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 = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
result.append(max)
}
return result
}
rollingMax(numbers: [1, 2, 3, 2, 3, 4, 2])
``` // Fatal error: Index out of rangefunc rollingMax(numbers: [Int]) -> [Int] {
var result = [Int]()
var max = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
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 = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
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 = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
result.append(max)
}
return result
}
rollingMax(numbers: [1, 2, 3, 2, 3, 4, 2])
``` // Fatal error: Index out of rangefunc rollingMax(numbers: [Int]) -> [Int] {
var result = [Int]()
var maxNum = numbers[0]
result.append(maxNum)
for i in 1..<numbers.count {
if numbers[i] > maxNum {
maxNum = numbers[i]
}
result.append(maxNum)
}
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 maxNum = numbers[0]
result.append(maxNum)
for i in 1..<numbers.count {
if numbers[i] > maxNum {
maxNum = numbers[i]
}
result.append(maxNum)
}
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 maxNum = numbers[0]
result.append(maxNum)
for i in 1..<numbers.count {
if numbers[i] > maxNum {
maxNum = numbers[i]
}
result.append(maxNum)
}
return result
}
rollingMax(numbers: [1, 2, 3, 2, 3, 4, 2])
``` // Fatal error: Index out of rangefunc rollingMax(numbers: [Int]) -> [Int] {
var result = [Int]()
var maxNum = numbers[0]
result.append(maxNum)
for i in 1..<numbers.count {
if numbers[i] > maxNum {
maxNum = numbers[i]
}
result.append(maxNum)
}
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 maxNum = numbers[0]
result.append(maxNum)
for i in 1..<numbers.count {
if numbers[i] > maxNum {
maxNum = numbers[i]
}
result.append(maxNum)
}
return result
}
``````
```swift
rollingMax(numbers: [1, 2, 3, 2, 3, 4, 2])
``` // Fatal error: Index out of rangefunc rollingMax(numbers: [Int]) -> [Int] {
var result = [Int]()
var max = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
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 = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
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 = numbers[0]
result.append(max)
for i in 1..<numbers.count {
if numbers[i] > max {
max = numbers[i]
}
result.append(max)
}
return result
}
rollingMax(numbers: [1, 2, 3, 2, 3, 4, 2])
``` // Fatal error: Index out of rangefunc makePalindrome(string: String) -> String {
guard let string = string else { return "" }
if let range = string.range(of: string, options: .backwards) {
let prefix = string[..<range.lowerBound]
let postfix = string[range.upperBound...]
if prefix == String(postfix.reversed()) {
return string
}
}
return string + String(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 {
guard let string = string else { return "" }
if let range = string.range(of: string, options: .backwards) {
let prefix = string[..<range.lowerBound]
let postfix = string[range.upperBound...]
if prefix == String(postfix.reversed()) {
return string
}
}
return string + String(string.reversed())
}
``````
```swift
// Testing the function
print(makePalindrome(string: "")) // ""
print(makePalindrome(string: "cat")) // "catac"
print(makePalindrome(string: "cata")) // "catac"
```guard let string = string else { return "" } // initializer for conditional binding must have Optional type, not 'String'func makePalindrome(string: String) -> String {
guard let string = string else { return "" }
if let (start, end) = string.range(of: string.reversed()) {
let prefix = string[..<start]
let suffix = string[end...]
return string + String(suffix.reversed())
}
return string
}```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 {
guard let string = string else { return "" }
if let (start, end) = string.range(of: string.reversed()) {
let prefix = string[..<start]
let suffix = string[end...]
return string + String(suffix.reversed())
}
return string
}
`````````swift
// Testing the function
print(makePalindrome(string: "")) // ""
print(makePalindrome(string: "cat")) // "catac"
print(makePalindrome(string: "cata")) // "catac"
```guard let string = string else { return "" } // initializer for conditional binding must have Optional type, not 'String'if let (start, end) = string.range(of: string.reversed()) { // cannot convert value of type 'Range<String.Index>?' to specified type 'Optional<(_, _)>'if let (start, end) = string.range(of: string.reversed()) { // instance method 'range(of:options:range:locale:)' requires that 'ReversedCollection<String>' conform to 'StringProtocol'let suffix = string[end...] // type '()' cannot conform to 'RangeExpression'func makePalindrome(string: String) -> String {
if let (start, end) = string.range(of: string.reversed()) {
let prefix = string[..<start]
let suffix = string[end...]
return string + String(suffix.reversed())
}
return ""
}```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 let (start, end) = string.range(of: string.reversed()) {
let prefix = string[..<start]
let suffix = string[end...]
return string + String(suffix.reversed())
}
return ""
}
// Test cases
print(makePalindrome(string: "")) // ""
print(makePalindrome(string: "cat")) // "catac"
print(makePalindrome(string: "cata")) // "catac"
`````````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 let (start, end) = string.range(of: string.reversed()) {
let prefix = string[..<start]
let suffix = string[end...]
return string + String(suffix.reversed())
}
return ""
}
// Test cases
print(makePalindrome(string: "")) // ""
print(makePalindrome(string: "cat")) // "catac"
print(makePalindrome(string: "cata")) // "catac"
```if let (start, end) = string.range(of: string.reversed()) { // cannot convert value of type 'Range<String.Index>?' to specified type 'Optional<(_, _)>'if let (start, end) = string.range(of: string.reversed()) { // instance method 'range(of:options:range:locale:)' requires that 'ReversedCollection<String>' conform to 'StringProtocol'let suffix = string[end...] // type '()' cannot conform to 'RangeExpression'func makePalindrome(string: String) -> String {
guard let string = string else { return "" }
if string.isEmpty { return "" }
var result = string
var postfix = string
while !postfix.isEmpty {
let prefix = string.prefix(upTo: postfix.first!)
if prefix == String(postfix.reversed()) {
result = string + String(postfix.dropFirst().reversed())
break
}
postfix.removeFirst()
}
return result
}```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 {
guard let string = string else { return "" }
if string.isEmpty { return "" }
var result = string
var postfix = string
while !postfix.isEmpty {
let prefix = string.prefix(upTo: postfix.first!)
if prefix == String(postfix.reversed()) {
result = string + String(postfix.dropFirst().reversed())
break
}
postfix.removeFirst()
}
return result
}
``````
```swift
// Testing the function
print(makePalindrome(string: "")) // ""
print(makePalindrome(string: "cat")) // "catac"
print(makePalindrome(string: "cata")) // "catac"
```guard let string = string else { return "" } // initializer for conditional binding must have Optional type, not 'String'let prefix = string.prefix(upTo: postfix.first!) // cannot convert value of type 'String.Element' (aka 'Character') to expected argument type 'String.Index'func makePalindrome(string: String) -> String {
if let (start, end) = string.range(of: string.reversed()) {
let prefix = string[..<start]
let suffix = string[end...]
return string + String(suffix.reversed())
}
return ""
}```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 let (start, end) = string.range(of: string.reversed()) {
let prefix = string[..<start]
let suffix = string[end...]
return string + String(suffix.reversed())
}
return ""
}
``````
```swift
makePalindrome(string: "cat")
```if let (start, end) = string.range(of: string.reversed()) { // cannot convert value of type 'Range<String.Index>?' to specified type 'Optional<(_, _)>'if let (start, end) = string.range(of: string.reversed()) { // instance method 'range(of:options:range:locale:)' requires that 'ReversedCollection<String>' conform to 'StringProtocol'let suffix = string[end...] // type '()' cannot conform to 'RangeExpression'func makePalindrome(string: String) -> String {
guard let string = string else { return "" }
if string.isEmpty { return "" }
var result = string
var postfix = ""
while !isPalindrome(string: result) {
postfix = result.suffix(max(0, result.count - 1))
result = string + String(postfix.reversed())
}
return result
}
func isPalindrome(string: String) -> Bool {
return string == String(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 {
guard let string = string else { return "" }
if string.isEmpty { return "" }
var result = string
var postfix = ""
while !isPalindrome(string: result) {
postfix = result.suffix(max(0, result.count - 1))
result = string + String(postfix.reversed())
}
return result
}
func isPalindrome(string: String) -> Bool {
return string == String(string.reversed())
}
``````
```swift
// Test cases
print(makePalindrome(string: "")) // ""
print(makePalindrome(string: "cat")) // "catac"
print(makePalindrome(string: "cata")) // "catac"
print(makePalindrome(string: "level")) // "level"
print(makePalindrome(string: "race")) // "racecar"
```guard let string = string else { return "" } // initializer for conditional binding must have Optional type, not 'String'postfix = result.suffix(max(0, result.count - 1)) // no 'suffix' candidates produce the expected contextual result type 'String'func makePalindrome(string: String) -> String {
if string.isEmpty {
return ""
}
var reversed = String(string.reversed())
var prefix = ""
for i in 0..<string.count {
prefix = String(string[string.index(string.startIndex, offsetBy: i)])
if string.hasPrefix(prefix) && string.hasSuffix(reversed.prefix(string.count - i)) {
break
}
}
return string + String(reversed.prefix(string.count - prefix.count).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.isEmpty {
return ""
}
var reversed = String(string.reversed())
var prefix = ""
for i in 0..<string.count {
prefix = String(string[string.index(string.startIndex, offsetBy: i)])
if string.hasPrefix(prefix) && string.hasSuffix(reversed.prefix(string.count - i)) {
break
}
}
return string + String(reversed.prefix(string.count - prefix.count).reversed())
}
``````
```swift
// Test cases
print(makePalindrome(string: "")) // ""
print(makePalindrome(string: "cat")) // "catac"
print(makePalindrome(string: "cata")) // "catac"
print(makePalindrome(string: "race")) // "racecar"
print(makePalindrome(string: "red")) // "redder"
print(makePalindrome(string: "tattarrattat")) // "tattarrattat"
```var reversed = String(string.reversed()) // variable 'reversed' was never mutated; consider changing to 'let' constant // XCTAssertTrue failedfunc makePalindrome(string: String) -> String {
if let (start, end) = string.range(of: string.reversed()) {
let prefix = string[..<start]
let suffix = string[end...]
return string + String(suffix.reversed())
}
return ""
}```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 let (start, end) = string.range(of: string.reversed()) {
let prefix = string[..<start]
let suffix = string[end...]
return string + String(suffix.reversed())
}
return ""
}
// Test cases
print(makePalindrome(string: "")) // ""
print(makePalindrome(string: "cat")) // "catac"
print(makePalindrome(string: "cata")) // "catac"
``````if let (start, end) = string.range(of: string.reversed()) { // cannot convert value of type 'Range<String.Index>?' to specified type 'Optional<(_, _)>'if let (start, end) = string.range(of: string.reversed()) { // instance method 'range(of:options:range:locale:)' requires that 'ReversedCollection<String>' conform to 'StringProtocol'let suffix = string[end...] // type '()' cannot conform to 'RangeExpression'func makePalindrome(string: String) -> String {
let reversed = String(string.reversed())
if string == reversed {
return string
}
var result = string
var i = string.index(string.startIndex, offsetBy: 1)
while i < string.endIndex {
let prefix = String(string[string.startIndex...i])
let postfix = String(string[i...string.endIndex])
if prefix == String(postfix.reversed()) {
result = string + String(reversed.prefix(string.endIndex.advancedBy(string.count - i)).reversed())
break
}
i = string.index(i, offsetBy: 1)
}
return result
}```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(string.reversed())
if string == reversed {
return string
}
var result = string
var i = string.index(string.startIndex, offsetBy: 1)
while i < string.endIndex {
let prefix = String(string[string.startIndex...i])
let postfix = String(string[i...string.endIndex])
if prefix == String(postfix.reversed()) {
result = string + String(reversed.prefix(string.endIndex.advancedBy(string.count - i)).reversed())
break
}
i = string.index(i, offsetBy: 1)
}
return result
}
makePalindrome(string: "cat")
``````result = string + String(reversed.prefix(string.endIndex.advancedBy(string.count - i)).reversed()) // cannot convert value of type 'String.Index' to expected argument type 'Int'result = string + String(reversed.prefix(string.endIndex.advancedBy(string.count - i)).reversed()) // value of type 'String.Index' has no member 'advancedBy'func makePalindrome(string: String) -> String {
if string.isEmpty {
return ""
}
var reversed = String(string.reversed())
var prefix = ""
for i in 0..<string.count {
if string[string.index(string.startIndex, offsetBy: i)] == reversed[reversed.index(reversed.startIndex, offsetBy: i)] {
prefix += String(string[string.index(string.startIndex, offsetBy: i)])
} else {
break
}
}
return string + String(prefix.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.isEmpty {
return ""
}
var reversed = String(string.reversed())
var prefix = ""
for i in 0..<string.count {
if string[string.index(string.startIndex, offsetBy: i)] == reversed[reversed.index(reversed.startIndex, offsetBy: i)] {
prefix += String(string[string.index(string.startIndex, offsetBy: i)])
} else {
break
}
}
return string + String(prefix.reversed())
}
makePalindrome(string: "cat")
``````var reversed = String(string.reversed()) // variable 'reversed' was never mutated; consider changing to 'let' constant // XCTAssertTrue failedfunc stringXor(a: String, b: String) -> String {
var result = ""
var i = a.count - 1
var j = b.count - 1
while i >= 0 || j >= 0 {
let aBit = i >= 0 ? Int(String(a[a.index(a.startIndex, offsetBy: i)])) : 0
let bBit = j >= 0 ? Int(String(b[b.index(b.startIndex, offsetBy: j)])) : 0
result = String(aBit ^ bBit) + result
i -= 1
j -= 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 = ""
var i = a.count - 1
var j = b.count - 1
while i >= 0 || j >= 0 {
let aBit = i >= 0 ? Int(String(a[a.index(a.startIndex, offsetBy: i)])) : 0
let bBit = j >= 0 ? Int(String(b[b.index(b.startIndex, offsetBy: j)])) : 0
result = String(aBit ^ bBit) + result
i -= 1
j -= 1
}
return result
}
``````
```swift
// Test the function
print(stringXor(a: "010", b: "110")) // Output: "100"
print(stringXor(a: "101", b: "001")) // Output: "100"
print(stringXor(a: "111", b: "000")) // Output: "111"
print(stringXor(a: "100", b: "011")) // Output: "111"
```result = String(aBit ^ bBit) + result // value of optional type 'Int?' must be unwrapped to a value of type 'Int'result = String(aBit ^ bBit) + result // value of optional type 'Int?' must be unwrapped to a value of type 'Int'func stringXor(a: String, b: String) -> String {
var result = ""
var i = a.count - 1
var j = b.count - 1
while i >= 0 || j >= 0 {
let aBit = i >= 0 ? Int(String(a[a.index(a.startIndex, offsetBy: i)])) : 0
let bBit = j >= 0 ? Int(String(b[b.index(b.startIndex, offsetBy: j)])) : 0
result = String(aBit ^ bBit) + result
i -= 1
j -= 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 = ""
var i = a.count - 1
var j = b.count - 1
while i >= 0 || j >= 0 {
let aBit = i >= 0 ? Int(String(a[a.index(a.startIndex, offsetBy: i)])) : 0
let bBit = j >= 0 ? Int(String(b[b.index(b.startIndex, offsetBy: j)])) : 0
result = String(aBit ^ bBit) + result
i -= 1
j -= 1
}
return result
}
``````
```swift
// Test the function with some test cases
print(stringXor(a: "010", b: "110")) // Expected output: "100"
print(stringXor(a: "101", b: "001")) // Expected output: "100"
print(stringXor(a: "111", b: "000")) // Expected output: "111"
print(stringXor(a: "000", b: "000")) // Expected output: "000"
```result = String(aBit ^ bBit) + result // value of optional type 'Int?' must be unwrapped to a value of type 'Int'result = String(aBit ^ bBit) + result // value of optional type 'Int?' must be unwrapped to a value of type 'Int'func stringXor(a: String, b: String) -> String {
var result = ""
let aArr = Array(a)
let bArr = Array(b)
for i in 0..<aArr.count {
if aArr[i] == bArr[i] {
result.append("0")
} else {
result.append("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 = ""
let aArr = Array(a)
let bArr = Array(b)
for i in 0..<aArr.count {
if aArr[i] == bArr[i] {
result.append("0")
} else {
result.append("1")
}
}
return result
}
``````
```swift
// Test the function
print(stringXor(a: "010", b: "110")) // Expected output: "100"
```func stringXor(a: String, b: String) -> String {
var result = ""
let aLength = a.count
let bLength = b.count
let maxLength = max(aLength, bLength)
for i in 0..<maxLength {
let aIndex = aLength - 1 - i
let bIndex = bLength - 1 - i
let aBit = aIndex >= 0 ? Int(String(a[aIndex])) : 0
let bBit = bIndex >= 0 ? Int(String(b[bIndex])) : 0
result = String(aBit ^ bBit) + result
}
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 = ""
let aLength = a.count
let bLength = b.count
let maxLength = max(aLength, bLength)
for i in 0..<maxLength {
let aIndex = aLength - 1 - i
let bIndex = bLength - 1 - i
let aBit = aIndex >= 0 ? Int(String(a[aIndex])) : 0
let bBit = bIndex >= 0 ? Int(String(b[bIndex])) : 0
result = String(aBit ^ bBit) + result
}
return result
}
``````
```python
# 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"
def stringXor(a: str, b: str) -> str:
result = ""
aLength = len(a)
bLength = len(b)
maxLength = max(aLength, bLength)
for i in range(maxLength):
aIndex = aLength - 1 - i
bIndex = bLength - 1 - i
aBit = int(a[aIndex]) if aIndex >= 0 else 0
bBit = int(b[bIndex]) if bIndex >= 0 else 0
result = str(aBit ^ bBit) + result
return result
```let aBit = aIndex >= 0 ? Int(String(a[aIndex])) : 0 // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.let bBit = bIndex >= 0 ? Int(String(b[bIndex])) : 0 // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.result = String(aBit ^ bBit) + result // value of optional type 'Int?' must be unwrapped to a value of type 'Int'result = String(aBit ^ bBit) + result // value of optional type 'Int?' must be unwrapped to a value of type 'Int'func stringXor(a: String, b: String) -> String {
var result = ""
for i in 0..<a.count {
let aBit = Int(String(a[a.index(a.startIndex, offsetBy: i)])) ?? 0
let bBit = Int(String(b[b.index(b.startIndex, offsetBy: i)])) ?? 0
result.append(String(aBit ^ bBit))
}
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 {
let aBit = Int(String(a[a.index(a.startIndex, offsetBy: i)])) ?? 0
let bBit = Int(String(b[b.index(b.startIndex, offsetBy: i)])) ?? 0
result.append(String(aBit ^ bBit))
}
return result
}
stringXor(a: "010", b: "110")
``````
```swift
func stringXor(a: String, b: String) -> String {
var result = ""
for i in 0..<a.count {
let aBit = Int(String(a[a.index(a.startIndex, offsetBy: i)])) ?? 0
let bBit = Int(String(b[b.index(b.startIndex, offsetBy: i)])) ?? 0
result.append(String(aBit ^ bBit))
}
return result
}
stringXor(a: "010", b: "110")
```func stringXor(a: String, b: String) -> String {
var result = ""
var i = a.count - 1
var j = b.count - 1
while i >= 0 || j >= 0 {
let aBit = i >= 0 ? Int(String(a[a.index(a.startIndex, offsetBy: i)])) : 0
let bBit = j >= 0 ? Int(String(b[b.index(b.startIndex, offsetBy: j)])) : 0
result = String(aBit ^ bBit) + result
i -= 1
j -= 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 = ""
var i = a.count - 1
var j = b.count - 1
while i >= 0 || j >= 0 {
let aBit = i >= 0 ? Int(String(a[a.index(a.startIndex, offsetBy: i)])) : 0
let bBit = j >= 0 ? Int(String(b[b.index(b.startIndex, offsetBy: j)])) : 0
result = String(aBit ^ bBit) + result
i -= 1
j -= 1
}
return result
}
``````
```swift
// Test the function with some inputs
print(stringXor(a: "010", b: "110")) // Expected output: "100"
print(stringXor(a: "101", b: "001")) // Expected output: "100"
print(stringXor(a: "111", b: "000")) // Expected output: "111"
print(stringXor(a: "000", b: "000")) // Expected output: "000"
```result = String(aBit ^ bBit) + result // value of optional type 'Int?' must be unwrapped to a value of type 'Int'result = String(aBit ^ bBit) + result // value of optional type 'Int?' must be unwrapped to a value of type 'Int'func stringXor(a: String, b: String) -> String {
var result = ""
var i = a.count - 1
var j = b.count - 1
var carry = 0
while i >= 0 || j >= 0 || carry > 0 {
let aDigit = i >= 0 ? Int(String(a[i])) : 0
let bDigit = j >= 0 ? Int(String(b[j])) : 0
let sum = aDigit + bDigit + carry
result = String(sum % 2) + result
carry = sum / 2
i -= 1
j -= 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 = ""
var i = a.count - 1
var j = b.count - 1
var carry = 0
while i >= 0 || j >= 0 || carry > 0 {
let aDigit = i >= 0 ? Int(String(a[i])) : 0
let bDigit = j >= 0 ? Int(String(b[j])) : 0
let sum = aDigit + bDigit + carry
result = String(sum % 2) + result
carry = sum / 2
i -= 1
j -= 1
}
return result
}
``````
```swift
// Test the function with some examples
print(stringXor(a: "010", b: "110")) // Output: "100"
print(stringXor(a: "101", b: "110")) // Output: "011"
print(stringXor(a: "111", b: "111")) // Output: "000"
```let aDigit = i >= 0 ? Int(String(a[i])) : 0 // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.let bDigit = j >= 0 ? Int(String(b[j])) : 0 // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.let sum = aDigit + bDigit + carry // binary operator '+' cannot be applied to two 'Int?' operandsfunc stringXor(a: String, b: String) -> String {
var result = ""
for (i, char) in a.enumerated() {
let x = Int(String(char)) ?? 0
let y = Int(String(b[b.index(b.startIndex, offsetBy: i)])) ?? 0
result.append(String(x ^ y))
}
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, char) in a.enumerated() {
let x = Int(String(char)) ?? 0
let y = Int(String(b[b.index(b.startIndex, offsetBy: i)])) ?? 0
result.append(String(x ^ y))
}
return result
}
``````
```swift
// Test the function with some inputs
print(stringXor(a: "010", b: "110")) // Expected output: "100"
print(stringXor(a: "101", b: "001")) // Expected output: "100"
print(stringXor(a: "111", b: "000")) // Expected output: "111"
```func stringXor(a: String, b: String) -> String {
var result = ""
var i = a.count - 1
var j = b.count - 1
var carry = 0
while i >= 0 || j >= 0 || carry > 0 {
let digitA = i >= 0 ? Int(String(a[a.index(a.startIndex, offsetBy: i)])) : 0
let digitB = j >= 0 ? Int(String(b[b.index(b.startIndex, offsetBy: j)])) : 0
let sum = digitA ^ digitB ^ carry
result = String(sum) + result
carry = (digitA & digitB) | (carry & (digitA ^ digitB))
i -= 1
j -= 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 = ""
var i = a.count - 1
var j = b.count - 1
var carry = 0
while i >= 0 || j >= 0 || carry > 0 {
let digitA = i >= 0 ? Int(String(a[a.index(a.startIndex, offsetBy: i)])) : 0
let digitB = j >= 0 ? Int(String(b[b.index(b.startIndex, offsetBy: j)])) : 0
let sum = digitA ^ digitB ^ carry
result = String(sum) + result
carry = (digitA & digitB) | (carry & (digitA ^ digitB))
i -= 1
j -= 1
}
return result
}
``````
```python
def string_xor(a: str, b: str) -> str:
result = ""
i = len(a) - 1
j = len(b) - 1
carry = 0
while i >= 0 or j >= 0 or carry > 0:
digitA = int(a[i]) if i >= 0 else 0
digitB = int(b[j]) if j >= 0 else 0
sum = digitA ^ digitB ^ carry
result = str(sum) + result
carry = (digitA & digitB) | (carry & (digitA ^ digitB))
i -= 1
j -= 1
return result
```let sum = digitA ^ digitB ^ carry // binary operator '^' cannot be applied to two 'Int?' operandscarry = (digitA & digitB) | (carry & (digitA ^ digitB)) // binary operator '^' cannot be applied to two 'Int?' operandscarry = (digitA & digitB) | (carry & (digitA ^ digitB)) // binary operator '&' cannot be applied to two 'Int?' operandsfunc stringXor(a: String, b: String) -> String {
var result = ""
for i in 0..<a.count {
let aBit = Int(String(a[a.index(a.startIndex, offsetBy: i)])) ?? 0
let bBit = Int(String(b[b.index(b.startIndex, offsetBy: i)])) ?? 0
result.append(String(aBit ^ bBit))
}
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 {
let aBit = Int(String(a[a.index(a.startIndex, offsetBy: i)])) ?? 0
let bBit = Int(String(b[b.index(b.startIndex, offsetBy: i)])) ?? 0
result.append(String(aBit ^ bBit))
}
return result
}
``````
```swift
// Test the function
print(stringXor(a: "010", b: "110")) // Output: "100"
```func longest(strings: [String]) -> String? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
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? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
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? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
return longest
}
}
}
```func longest(strings: [String]) -> String? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
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? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
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? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
return longest
}
}
}
```func longest(strings: [String]) -> String? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
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? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
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? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
return longest
}
}
}
// Test cases
print(longest(strings: [])) // nil
print(longest(strings: ["a", "b", "c"])) // "a"
print(longest(strings: ["a", "bb", "ccc"])) // "ccc"
```func longest(strings: [String]) -> String? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
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? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
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? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
return longest
}
}
}
```func longest(strings: [String]) -> String? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
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? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
return longest
}
}
}
`````````swift
// Test cases
print(longest(strings: [])) // nil
print(longest(strings: ["a", "b", "c"])) // "a"
print(longest(strings: ["a", "bb", "ccc"])) // "ccc"
```func longest(strings: [String]) -> String? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
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? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
return longest
}
}
}
`````````swift
// Test cases
print(longest(strings: [])) // nil
print(longest(strings: ["a", "b", "c"])) // "a"
print(longest(strings: ["a", "bb", "ccc"])) // "ccc"
```func longest(strings: [String]) -> String? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
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? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
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? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
return longest
}
}
}
```func longest(strings: [String]) -> String? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
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? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
return longest
}
}
}
`````````swift
// Test cases
print(longest(strings: [])) // nil
print(longest(strings: ["a", "b", "c"])) // "a"
print(longest(strings: ["a", "bb", "ccc"])) // "ccc"
```func longest(strings: [String]) -> String? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
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? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
return longest
}
}
}
`````````swift
// Test cases
print(longest(strings: [])) // nil
print(longest(strings: ["a", "b", "c"])) // "a"
print(longest(strings: ["a", "bb", "ccc"])) // "ccc"
```func longest(strings: [String]) -> String? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
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? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
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? {
guard !strings.isEmpty else { return nil }
return strings.reduce(strings[0]) { longest, current in
if current.count > longest.count {
return current
} else {
return longest
}
}
}
```func greatestCommonDivisor(a: Int, b: Int) -> Int {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return 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 {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return 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 {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return a
}
```func greatestCommonDivisor(a: Int, b: Int) -> Int {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return a
}
func leastCommonMultiple(a: Int, b: Int) -> Int {
return a * b / greatestCommonDivisor(a: a, b: b)
}
func greatestCommonDivisorOfArray(array: [Int]) -> Int {
var result = array[0]
for i in 1..<array.count {
result = greatestCommonDivisor(a: result, b: array[i])
}
return result
}
func leastCommonMultipleOfArray(array: [Int]) -> Int {
var result = array[0]
for i in 1..<array.count {
result = leastCommonMultiple(a: result, b: array[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 {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return a
}
// Return a least common multiple of two integers a and b
// leastCommonMultiple(a: 3, b: 5) == 15
// leastCommonMultiple(a: 25, b: 15) == 75
func leastCommonMultiple(a: Int, b: Int) -> Int {
return a * b / greatestCommonDivisor(a: a, b: b)
}
// Return a greatest common divisor of an array of integers
// greatestCommonDivisorOfArray(array: [3, 5, 10]) == 1
// greatestCommonDivisorOfArray(array: [25, 15, 100]) == 5
func greatestCommonDivisorOfArray(array: [Int]) -> Int {
var result = array[0]
for i in 1..<array.count {
result = greatestCommonDivisor(a: result, b: array[i])
}
return result
}
// Return a least common multiple of an array of integers
// leastCommonMultipleOfArray(array: [3, 5, 10]) == 30
// leastCommonMultipleOfArray(array: [25, 15, 100]) == 150
func leastCommonMultipleOfArray(array: [Int]) -> Int {
var result = array[0]
for i in 1..<array.count {
result = leastCommonMultiple(a: result, b: array[i])
}
return result
}
``````func greatestCommonDivisor(a: Int, b: Int) -> Int {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return 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 {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return 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 {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return a
}
```func greatestCommonDivisor(a: Int, b: Int) -> Int {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return 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 {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return 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 {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return a
}
```func greatestCommonDivisor(a: Int, b: Int) -> Int {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return 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 {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return 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 {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return a
}
```func greatestCommonDivisor(a: Int, b: Int) -> Int {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return 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 {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return 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 {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return a
}
```func greatestCommonDivisor(a: Int, b: Int) -> Int {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return 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 {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return 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 {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return a
}
```func greatestCommonDivisor(a: Int, b: Int) -> Int {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return 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 {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return 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 {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return a
}
```func greatestCommonDivisor(a: Int, b: Int) -> Int {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return 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 {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return 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 {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return a
}
```func greatestCommonDivisor(a: Int, b: Int) -> Int {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return 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 {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return 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 {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return a
}
```func allPrefixes(string: String) -> [String] {
var prefixes = [String]()
for i in 0..<string.count {
prefixes.append(String(string[string.prefix(i + 1)!]))
}
return prefixes
}```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 prefixes = [String]()
for i in 0..<string.count {
prefixes.append(String(string[string.prefix(i + 1)!]))
}
return prefixes
}
allPrefixes(string: "abc")
``````prefixes.append(String(string[string.prefix(i + 1)!])) // cannot force unwrap value of non-optional type 'PrefixSequence<String>'prefixes.append(String(string[string.prefix(i + 1)!])) // no exact matches in call to subscriptfunc allPrefixes(string: String) -> [String] {
var prefixes = [String]()
for i in 0..<string.count {
prefixes.append(String(string[string.prefix(i + 1)!]))
}
return prefixes
}```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 prefixes = [String]()
for i in 0..<string.count {
prefixes.append(String(string[string.prefix(i + 1)!]))
}
return prefixes
}
allPrefixes(string: "abc")
``````prefixes.append(String(string[string.prefix(i + 1)!])) // cannot force unwrap value of non-optional type 'PrefixSequence<String>'prefixes.append(String(string[string.prefix(i + 1)!])) // no exact matches in call to subscriptfunc allPrefixes(string: String) -> [String] {
var prefixes = [String]()
for i in 0..<string.count {
prefixes.append(String(string[string.prefix(i + 1)!]))
}
return prefixes
}```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 prefixes = [String]()
for i in 0..<string.count {
prefixes.append(String(string[string.prefix(i + 1)!]))
}
return prefixes
}
allPrefixes(string: "abc")
``````
```python
# Return array of all prefixes from shortest to longest of the input string
# allPrefixes("abc") == ["a", "ab", "abc"]
def allPrefixes(string):
prefixes = []
for i in range(len(string)):
prefixes.append(string[:i+1])
return prefixes
allPrefixes("abc")
```prefixes.append(String(string[string.prefix(i + 1)!])) // cannot force unwrap value of non-optional type 'PrefixSequence<String>'prefixes.append(String(string[string.prefix(i + 1)!])) // no exact matches in call to subscriptfunc allPrefixes(string: String) -> [String] {
var prefixes = [String]()
for i in 0..<string.count {
prefixes.append(String(string[string.prefix(i + 1)!]))
}
return prefixes
}```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 prefixes = [String]()
for i in 0..<string.count {
prefixes.append(String(string[string.prefix(i + 1)!]))
}
return prefixes
}
allPrefixes(string: "abc")
``````prefixes.append(String(string[string.prefix(i + 1)!])) // cannot force unwrap value of non-optional type 'PrefixSequence<String>'prefixes.append(String(string[string.prefix(i + 1)!])) // no exact matches in call to subscriptfunc allPrefixes(string: String) -> [String] {
var prefixes = [String]()
for i in 0..<string.count {
prefixes.append(String(string[string.prefix(i+1)!]))
}
return prefixes
}```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 prefixes = [String]()
for i in 0..<string.count {
prefixes.append(String(string[string.prefix(i+1)!]))
}
return prefixes
}
allPrefixes(string: "abc")
``````prefixes.append(String(string[string.prefix(i+1)!])) // no exact matches in call to subscriptprefixes.append(String(string[string.prefix(i+1)!])) // cannot force unwrap value of non-optional type 'PrefixSequence<String>'func allPrefixes(string: String) -> [String] {
var prefixes = [String]()
for i in 0..<string.count {
prefixes.append(String(string[string.prefix(i+1)!]))
}
return prefixes
}```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 prefixes = [String]()
for i in 0..<string.count {
prefixes.append(String(string[string.prefix(i+1)!]))
}
return prefixes
}
allPrefixes(string: "abc")
``````prefixes.append(String(string[string.prefix(i+1)!])) // no exact matches in call to subscriptprefixes.append(String(string[string.prefix(i+1)!])) // cannot force unwrap value of non-optional type 'PrefixSequence<String>'func allPrefixes(string: String) -> [String] {
var prefixes = [String]()
for i in 0..<string.count {
prefixes.append(String(string[string.prefix(i+1)!]))
}
return prefixes
}```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 prefixes = [String]()
for i in 0..<string.count {
prefixes.append(String(string[string.prefix(i+1)!]))
}
return prefixes
}
allPrefixes(string: "abc")
``````prefixes.append(String(string[string.prefix(i+1)!])) // no exact matches in call to subscriptprefixes.append(String(string[string.prefix(i+1)!])) // cannot force unwrap value of non-optional type 'PrefixSequence<String>'func allPrefixes(string: String) -> [String] {
var prefixes = [String]()
for i in 0..<string.count {
prefixes.append(String(string[string.prefix(i + 1)!]))
}
return prefixes
}```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 prefixes = [String]()
for i in 0..<string.count {
prefixes.append(String(string[string.prefix(i + 1)!]))
}
return prefixes
}
allPrefixes(string: "abc")
`````````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 prefixes = [String]()
for i in 0..<string.count {
prefixes.append(String(string[string.prefix(i + 1)!]))
}
return prefixes
}
allPrefixes(string: "abc")
```prefixes.append(String(string[string.prefix(i + 1)!])) // cannot force unwrap value of non-optional type 'PrefixSequence<String>'prefixes.append(String(string[string.prefix(i + 1)!])) // no exact matches in call to subscriptfunc allPrefixes(string: String) -> [String] {
return Array(0..<string.count).map { string[string.index(string.startIndex, offsetBy: $0)] }
}
func allSuffixes(string: String) -> [String] {
return Array(0..<string.count).map { string[string.index(string.startIndex, offsetBy: string.count - $0 - 1)] }
}
func allSubstrings(string: String) -> [String] {
return Array(0..<string.count).flatMap { i in
(i...string.count).map { j in
String(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
}
}
}```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] {
return Array(0..<string.count).map { string[string.index(string.startIndex, offsetBy: $0)] }
}
// Return array of all suffixes from shortest to longest of the input string
// allSuffixes(string: "abc") == ["c", "bc", "abc"]
func allSuffixes(string: String) -> [String] {
return Array(0..<string.count).map { string[string.index(string.startIndex, offsetBy: string.count - $0 - 1)] }
}
// 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] {
return Array(0..<string.count).flatMap { i in
(i...string.count).map { j in
String(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
}
}
}
`````````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] {
return Array(0..<string.count).map { string[string.index(string.startIndex, offsetBy: $0)] }
}
// Return array of all suffixes from shortest to longest of the input string
// allSuffixes(string: "abc") == ["c", "bc", "abc"]
func allSuffixes(string: String) -> [String] {
return Array(0..<string.count).map { string[string.index(string.startIndex, offsetBy: string.count - $0 - 1)] }
}
// 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] {
return Array(0..<string.count).flatMap { i in
(i...string.count).map { j in
String(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
}
}
}
```return Array(0..<string.count).map { string[string.index(string.startIndex, offsetBy: $0)] } // cannot convert value of type 'Character' to closure result type 'String'return Array(0..<string.count).map { string[string.index(string.startIndex, offsetBy: string.count - $0 - 1)] } // cannot convert value of type 'Character' to closure result type 'String'func allPrefixes(string: String) -> [String] {
return Array(0..<string.count).map { string[string.index(string.startIndex, offsetBy: $0)] }
}
func allSuffixes(string: String) -> [String] {
return Array(0..<string.count).map { string[string.index(string.startIndex, offsetBy: string.count - $0 - 1)] }
}
func allSubstrings(string: String) -> [String] {
return Array(0..<string.count).flatMap { i in
(i...string.count).map { j in
String(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
}
}
}
func allPalindromicSubstrings(string: String) -> [String] {
var result: [String] = []
for i in 0..<string.count {
for j in i...string.count {
let substring = String(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
if substring == String(substring.reversed()) {
result.append(substring)
}
}
}
return result
}
func longestPalindromicSubstring(string: String) -> String {
var longest = ""
for i in 0..<string.count {
for j in i...string.count {
let substring = String(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
if substring == String(substring.reversed()) && substring.count > longest.count {
longest = substring
}
}
}
return longest
}
func distinctSubstringsCount(string: String) -> Int {
var count = 0
var set = Set<String>()
for i in 0..<string.count {
for j in i...string.count {
let substring = String(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
if !set.contains(substring) {
set.insert(substring)
count += 1
}
}
}
return count
}
func distinctPalindromicSubstringsCount(string: String) -> Int {
var count = 0
var set = Set<String>()
for i in 0..<string.count {
for j in i...string.count {
let substring = String(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
if substring == String(substring.reversed()) && !set.contains(substring) {
set.insert(substring)
count += 1
}
}
}
return count
}```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] {
return Array(0..<string.count).map { string[string.index(string.startIndex, offsetBy: $0)] }
}
// Return array of all suffixes from shortest to longest of the input string
// allSuffixes(string: "abc") == ["c", "bc", "abc"]
func allSuffixes(string: String) -> [String] {
return Array(0..<string.count).map { string[string.index(string.startIndex, offsetBy: string.count - $0 - 1)] }
}
// 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] {
return Array(0..<string.count).flatMap { i in
(i...string.count).map { j in
String(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
}
}
}
// Return array of all palindromic substrings of the input string
// allPalindromicSubstrings(string: "abc") == ["a", "b", "c"]
func allPalindromicSubstrings(string: String) -> [String] {
var result: [String] = []
for i in 0..<string.count {
for j in i...string.count {
let substring = String(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
if substring == String(substring.reversed()) {
result.append(substring)
}
}
}
return result
}
// Return the longest palindromic substring of the input string
// longestPalindromicSubstring(string: "abc") == "a"
func longestPalindromicSubstring(string: String) -> String {
var longest = ""
for i in 0..<string.count {
for j in i...string.count {
let substring = String(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
if substring == String(substring.reversed()) && substring.count > longest.count {
longest = substring
}
}
}
return longest
}
``````
```swift
// Return the number of distinct substrings of the input string
// distinctSubstringsCount(string: "abc") == 7
func distinctSubstringsCount(string: String) -> Int {
var count = 0
var set = Set<String>()
for i in 0..<string.count {
for j in i...string.count {
let substring = String(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
if !set.contains(substring) {
set.insert(substring)
count += 1
}
}
}
return count
}
// Return the number of distinct palindromic substrings of the input string
// distinctPalindromicSubstringsCount(string: "abc") == 3
func distinctPalindromicSubstringsCount(string: String) -> Int {
var count = 0
var set = Set<String>()
for i in 0..<string.count {
for j in i...string.count {
let substring = String(string[string.index(string.startIndex, offsetBy: i)..<string.index(string.startIndex, offsetBy: j)])
if substring == String(substring.reversed()) && !set.contains(substring) {
set.insert(substring)
count += 1
}
}
}
return count
}
// Return the number of distinct palindromic substrings of the input string
// distinctPalindromicSubstringsCount(string: "abc") == 3
func distinctPalindromicreturn Array(0..<string.count).map { string[string.index(string.startIndex, offsetBy: $0)] } // cannot convert value of type 'Character' to closure result type 'String'return Array(0..<string.count).map { string[string.index(string.startIndex, offsetBy: string.count - $0 - 1)] } // cannot convert value of type 'Character' to closure result type 'String'func stringSequence(n: Int) -> String {
var result = ""
for i in 0..<n {
result += "\(i) "
}
result += "\(n)"
return result
}```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) "
}
result += "\(n)"
return result
}
print(stringSequence(n: 5))
``````
```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) "
}
result += "\(n)"
return result
}
print(stringSequence(n: 5))
```func stringSequence(n: Int) -> String {
var result = ""
for i in 0..<n {
result += String(i) + " "
}
result += String(n)
return result
}```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) + " "
}
result += String(n)
return result
}
print(stringSequence(n: 5))
``````func stringSequence(n: Int) -> String {
var result = ""
for i in 0..<n {
result += String(i) + " "
}
result += String(n)
return result
}```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) + " "
}
result += String(n)
return result
}
// Test cases
print(stringSequence(n: 0)) // "0"
print(stringSequence(n: 5)) // "0 1 2 3 4 5"
``````func stringSequence(n: Int) -> String {
var result = ""
for i in 0..<n {
result += String(i) + " "
}
result += String(n)
return result
}```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) + " "
}
result += String(n)
return result
}
// Test cases
print(stringSequence(n: 0)) // "0"
print(stringSequence(n: 5)) // "0 1 2 3 4 5"
``````func stringSequence(n: Int) -> String {
var result = ""
for i in 0..<n {
result += String(i) + " "
}
result += String(n)
return result
}```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) + " "
}
result += String(n)
return result
}
print(stringSequence(n: 5))
``````
```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) + " "
}
result += String(n)
return result
}
print(stringSequence(n: 5))
```func stringSequence(n: Int) -> String {
var result = ""
for i in 0..<n {
result += String(i) + " "
}
result += String(n)
return result
}```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) + " "
}
result += String(n)
return result
}
// Test cases
print(stringSequence(n: 0)) // "0"
print(stringSequence(n: 5)) // "0 1 2 3 4 5"
``````func stringSequence(n: Int) -> String {
var result = ""
for i in 0..<n {
result += String(i) + " "
}
result += String(n)
return result
}```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) + " "
}
result += String(n)
return result
}
// Test cases
print(stringSequence(n: 0)) // "0"
print(stringSequence(n: 5)) // "0 1 2 3 4 5"
``````func stringSequence(n: Int) -> String {
var result = ""
for i in 0..<n {
result += "\(i) "
}
result += "\(n)"
return result
}```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) "
}
result += "\(n)"
return result
}
print(stringSequence(n: 5))
``````func stringSequence(n: Int) -> String {
var result = ""
for i in 0..<n {
result += String(i) + " "
}
result += String(n)
return result
}```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) + " "
}
result += String(n)
return result
}
// Test cases
print(stringSequence(n: 0)) // "0"
print(stringSequence(n: 5)) // "0 1 2 3 4 5"
`````````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) + " "
}
result += String(n)
return result
}
// Test cases
print(stringSequence(n: 0)) // "0"
print(stringSequence(n: 5)) // "0 1 2 3 4 5"
```func stringSequence(n: Int) -> String {
var result = ""
for i in 0..<n {
result += String(i) + " "
}
result += String(n)
return result
}```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) + " "
}
result += String(n)
return result
}
// Test cases
print(stringSequence(n: 0)) // "0"
print(stringSequence(n: 5)) // "0 1 2 3 4 5"
`````````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) + " "
}
result += String(n)
return result
}
// Test cases
print(stringSequence(n: 0)) // "0"
print(stringSequence(n: 5)) // "0 1 2 3 4 5"
```func countDistinctCharacters(string: String) -> Int {
let lowercaseString = string.lowercased()
var characters = Set<Character>()
for character in lowercaseString {
characters.insert(character)
}
return characters.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 {
let lowercaseString = string.lowercased()
var characters = Set<Character>()
for character in lowercaseString {
characters.insert(character)
}
return characters.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 {
let lowercaseString = string.lowercased()
var characters = Set<Character>()
for character in lowercaseString {
characters.insert(character)
}
return characters.count
}
countDistinctCharacters(string: "xyzXYZ")
```func countDistinctCharacters(string: String) -> Int {
let lowercaseString = string.lowercased()
var characterSet = Set<Character>()
for character in lowercaseString {
characterSet.insert(character)
}
return characterSet.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 {
let lowercaseString = string.lowercased()
var characterSet = Set<Character>()
for character in lowercaseString {
characterSet.insert(character)
}
return characterSet.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 {
let lowercaseString = string.lowercased()
var characterSet = Set<Character>()
for character in lowercaseString {
characterSet.insert(character)
}
return characterSet.count
}
```func countDistinctCharacters(string: String) -> Int {
let lowercased = string.lowercased()
var set = Set<Character>()
for char in lowercased {
set.insert(char)
}
return set.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 {
let lowercased = string.lowercased()
var set = Set<Character>()
for char in lowercased {
set.insert(char)
}
return set.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 {
let lowercased = string.lowercased()
var set = Set<Character>()
for char in lowercased {
set.insert(char)
}
return set.count
}
// Test cases
print(countDistinctCharacters(string: "xyzXYZ")) // 3
print(countDistinctCharacters(string: "Jerry")) // 4
```func countDistinctCharacters(string: String) -> Int {
let characters = string.lowercased().map { String($0) }
return Set(characters).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 {
let characters = string.lowercased().map { String($0) }
return Set(characters).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 {
let characters = string.lowercased().map { String($0) }
return Set(characters).count
}
// Test cases
print(countDistinctCharacters(string: "xyzXYZ")) // 3
print(countDistinctCharacters(string: "Jerry")) // 4
```func countDistinctCharacters(string: String) -> Int {
let characters = string.lowercased().map { String($0) }
let distinctCharacters = Array(Set(characters))
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 {
let characters = string.lowercased().map { String($0) }
let distinctCharacters = Array(Set(characters))
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 {
let characters = string.lowercased().map { String($0) }
let distinctCharacters = Array(Set(characters))
return distinctCharacters.count
}
// Test cases
print(countDistinctCharacters(string: "xyzXYZ")) // 3
print(countDistinctCharacters(string: "Jerry")) // 4
```func countDistinctCharacters(string: String) -> Int {
let lowercase = string.lowercased()
var set = Set<Character>()
for char in lowercase {
set.insert(char)
}
return set.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 {
let lowercase = string.lowercased()
var set = Set<Character>()
for char in lowercase {
set.insert(char)
}
return set.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 {
let lowercase = string.lowercased()
var set = Set<Character>()
for char in lowercase {
set.insert(char)
}
return set.count
}
countDistinctCharacters(string: "xyzXYZ")
```func countDistinctCharacters(string: String) -> Int {
let characters = string.lowercased().map { String($0) }
let distinctCharacters = Array(Set(characters))
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 {
let characters = string.lowercased().map { String($0) }
let distinctCharacters = Array(Set(characters))
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 {
let characters = string.lowercased().map { String($0) }
let distinctCharacters = Array(Set(characters))
return distinctCharacters.count
}
// Test cases
print(countDistinctCharacters(string: "xyzXYZ")) // 3
print(countDistinctCharacters(string: "Jerry")) // 4
```func countDistinctCharacters(string: String) -> Int {
let lowercaseString = string.lowercased()
var characters = Set<Character>()
for char in lowercaseString {
characters.insert(char)
}
return characters.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 {
let lowercaseString = string.lowercased()
var characters = Set<Character>()
for char in lowercaseString {
characters.insert(char)
}
return characters.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 {
let lowercaseString = string.lowercased()
var characters = Set<Character>()
for char in lowercaseString {
characters.insert(char)
}
return characters.count
}
```func countDistinctCharacters(string: String) -> Int {
let lowercaseString = string.lowercased()
var characters = Set<Character>()
for char in lowercaseString {
characters.insert(char)
}
return characters.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 {
let lowercaseString = string.lowercased()
var characters = Set<Character>()
for char in lowercaseString {
characters.insert(char)
}
return characters.count
}
``````
```swift
// Testing the function
print(countDistinctCharacters(string: "xyzXYZ")) // Output: 3
print(countDistinctCharacters(string: "Jerry")) // Output: 4
```func countDistinctCharacters(string: String) -> Int {
let lowercaseString = string.lowercased()
var characterSet = Set<Character>()
for character in lowercaseString {
characterSet.insert(character)
}
return characterSet.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 {
let lowercaseString = string.lowercased()
var characterSet = Set<Character>()
for character in lowercaseString {
characterSet.insert(character)
}
return characterSet.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 {
let lowercaseString = string.lowercased()
var characterSet = Set<Character>()
for character in lowercaseString {
characterSet.insert(character)
}
return characterSet.count
}
countDistinctCharacters(string: "xyzXYZ")
```func parseMusic(musicString: String) -> [Int] {
var result = [Int]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
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]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
return result
}
`````````swift
func parseMusic(musicString: String) -> [Int] {
var result = [Int]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
return result
}
parseMusic(musicString: "o o| .| o| o| .| .| .| .| o o")
```func parseMusic(musicString: String) -> [Int] {
var result = [Int]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
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]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
return result
}
`````````swift
func parseMusic(musicString: String) -> [Int] {
var result = [Int]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
return result
}
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]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
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]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
return result
}
`````````swift
func parseMusic(musicString: String) -> [Int] {
var result = [Int]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
return result
}
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]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
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]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
return result
}
`````````swift
func parseMusic(musicString: String) -> [Int] {
var result = [Int]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
return result
}
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]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
if note == "o" {
result.append(4)
} else if note == "o|" {
result.append(2)
} else if note == ".|" {
result.append(1)
}
}
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]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
if note == "o" {
result.append(4)
} else if note == "o|" {
result.append(2)
} else if note == ".|" {
result.append(1)
}
}
return result
}
`````````swift
func parseMusic(musicString: String) -> [Int] {
var result = [Int]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
if note == "o" {
result.append(4)
} else if note == "o|" {
result.append(2)
} else if note == ".|" {
result.append(1)
}
}
return result
}
parseMusic(musicString: "o o| .| o| o| .| .| .| .| o o")
```func parseMusic(musicString: String) -> [Int] {
var result = [Int]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
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]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
return result
}
`````````swift
func parseMusic(musicString: String) -> [Int] {
var result = [Int]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
return result
}
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 beats = [Int]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
if note == "o" {
beats.append(4)
} else if note == "o|" {
beats.append(2)
} else if note == ".|" {
beats.append(1)
}
}
return beats
}```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 beats = [Int]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
if note == "o" {
beats.append(4)
} else if note == "o|" {
beats.append(2)
} else if note == ".|" {
beats.append(1)
}
}
return beats
}
`````````swift
func parseMusic(musicString: String) -> [Int] {
var beats = [Int]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
if note == "o" {
beats.append(4)
} else if note == "o|" {
beats.append(2)
} else if note == ".|" {
beats.append(1)
}
}
return beats
}
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]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
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]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
return result
}
`````````swift
func parseMusic(musicString: String) -> [Int] {
var result = [Int]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
return result
}
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]()
let notes = musicString.split(separator: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
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]()
let notes = musicString.split(separator: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
return result
}
`````````swift
func parseMusic(musicString: String) -> [Int] {
var result = [Int]()
let notes = musicString.split(separator: " ")
for note in notes {
switch note {
case "o":
result.append(4)
case "o|":
result.append(2)
case ".|":
result.append(1)
default:
break
}
}
return result
}
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]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
if note == "o" {
result.append(4)
} else if note == "o|" {
result.append(2)
} else if note == ".|" {
result.append(1)
}
}
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]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
if note == "o" {
result.append(4)
} else if note == "o|" {
result.append(2)
} else if note == ".|" {
result.append(1)
}
}
return result
}
`````````swift
func parseMusic(musicString: String) -> [Int] {
var result = [Int]()
let notes = musicString.components(separatedBy: " ")
for note in notes {
if note == "o" {
result.append(4)
} else if note == "o|" {
result.append(2)
} else if note == ".|" {
result.append(1)
}
}
return result
}
parseMusic(musicString: "o o| .| o| o| .| .| .| .| o o") // [4, 2, 1, 2, 2, 1, 1, 1, 1, 4, 4]
```func howManyTimes(string: String, substring: String) -> Int {
var count = 0
var index = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
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 = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
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 = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
return count
}
// Test cases
print(howManyTimes(string: "", substring: "a")) // 0
print(howManyTimes(string: "aaa", substring: "a")) // 3
print(howManyTimes(string: "aaaa", substring: "aa")) // 3
``` // XCTAssertTrue failedfunc howManyTimes(string: String, substring: String) -> Int {
var count = 0
var startIndex = string.startIndex
while startIndex < string.endIndex {
if let endIndex = string[startIndex...].range(of: substring) {
count += 1
startIndex = endIndex.upperBound
} else {
break
}
}
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 startIndex = string.startIndex
while startIndex < string.endIndex {
if let endIndex = string[startIndex...].range(of: substring) {
count += 1
startIndex = endIndex.upperBound
} else {
break
}
}
return count
}
// Test cases
print(howManyTimes(string: "", substring: "a")) // 0
print(howManyTimes(string: "aaa", substring: "a")) // 3
print(howManyTimes(string: "aaaa", substring: "aa")) // 3
`````````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 startIndex = string.startIndex
while startIndex < string.endIndex {
if let endIndex = string[startIndex...].range(of: substring) {
count += 1
startIndex = endIndex.upperBound
} else {
break
}
}
return count
}
// Test cases
print(howManyTimes(string: "", substring: "a")) // 0
print(howManyTimes(string: "aaa", substring: "a")) // 3
print(howManyTimes(string: "aaaa", substring: "aa")) // 3
``` // XCTAssertTrue failedfunc howManyTimes(string: String, substring: String) -> Int {
var count = 0
var index = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
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 = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
return count
}
`````````swift
// Test cases
print(howManyTimes(string: "", substring: "a")) // 0
print(howManyTimes(string: "aaa", substring: "a")) // 3
print(howManyTimes(string: "aaaa", substring: "aa")) // 3
print(howManyTimes(string: "ababa", substring: "aba")) // 2
``` // XCTAssertTrue failedfunc howManyTimes(string: String, substring: String) -> Int {
var count = 0
var index = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
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 = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
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 = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
return count
}
// Test cases
print(howManyTimes(string: "", substring: "a")) // 0
print(howManyTimes(string: "aaa", substring: "a")) // 3
print(howManyTimes(string: "aaaa", substring: "aa")) // 3
``` // XCTAssertTrue failedfunc howManyTimes(string: String, substring: String) -> Int {
var count = 0
var index = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
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 = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
return count
}
``````
```swift
// Test cases
print(howManyTimes(string: "", substring: "a")) // 0
print(howManyTimes(string: "aaa", substring: "a")) // 3
print(howManyTimes(string: "aaaa", substring: "aa")) // 3
print(howManyTimes(string: "ababa", substring: "aba")) // 2
print(howManyTimes(string: "ababa", substring: "ab")) // 2
print(howManyTimes(string: "ababa", substring: "bab")) // 1
print(howManyTimes(string: "ababa", substring: "baba")) // 1
print(howManyTimes(string: "ababa", substring: "a")) // 2
print(howManyTimes(string: "ababa", substring: "b")) // 2
print(howManyTimes(string: "ababa", substring: "")) // 0
``` // XCTAssertTrue failedfunc howManyTimes(string: String, substring: String) -> Int {
var count = 0
var index = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
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 = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
return count
}
``````
```swift
// Test cases
print(howManyTimes(string: "", substring: "a")) // 0
print(howManyTimes(string: "aaa", substring: "a")) // 3
print(howManyTimes(string: "aaaa", substring: "aa")) // 3
print(howManyTimes(string: "ababa", substring: "aba")) // 2
print(howManyTimes(string: "ababa", substring: "ab")) // 2
print(howManyTimes(string: "ababa", substring: "bab")) // 1
print(howManyTimes(string: "ababa", substring: "baba")) // 1
print(howManyTimes(string: "ababa", substring: "a")) // 2
print(howManyTimes(string: "ababa", substring: "b")) // 2
print(howManyTimes(string: "ababa", substring: "")) // 0
``` // XCTAssertTrue failedfunc howManyTimes(string: String, substring: String) -> Int {
var count = 0
var index = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
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 = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
return count
}
``````
```swift
// Test cases
print(howManyTimes(string: "", substring: "a")) // 0
print(howManyTimes(string: "aaa", substring: "a")) // 3
print(howManyTimes(string: "aaaa", substring: "aa")) // 3
print(howManyTimes(string: "ababa", substring: "aba")) // 2
print(howManyTimes(string: "ababa", substring: "abab")) // 1
print(howManyTimes(string: "ababa", substring: "bab")) // 1
print(howManyTimes(string: "ababa", substring: "a")) // 5
print(howManyTimes(string: "ababa", substring: "")) // 6
``` // XCTAssertTrue failedfunc howManyTimes(string: String, substring: String) -> Int {
var count = 0
var index = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
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 = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
return count
}
``````
```swift
// Test cases
print(howManyTimes(string: "", substring: "a")) // 0
print(howManyTimes(string: "aaa", substring: "a")) // 3
print(howManyTimes(string: "aaaa", substring: "aa")) // 3
print(howManyTimes(string: "ababa", substring: "aba")) // 2
``` // XCTAssertTrue failedfunc howManyTimes(string: String, substring: String) -> Int {
var count = 0
var index = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
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 = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
return count
}
``````
```swift
// Test cases
print(howManyTimes(string: "", substring: "a")) // 0
print(howManyTimes(string: "aaa", substring: "a")) // 3
print(howManyTimes(string: "aaaa", substring: "aa")) // 3
print(howManyTimes(string: "ababa", substring: "aba")) // 2
print(howManyTimes(string: "abcabcabc", substring: "abc")) // 3
``` // XCTAssertTrue failedfunc howManyTimes(string: String, substring: String) -> Int {
var count = 0
var index = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
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 = string.startIndex
while index < string.endIndex {
if let range = string[index...].range(of: substring) {
count += 1
index = range.upperBound
} else {
break
}
}
return count
}
``````
```swift
// Test cases
print(howManyTimes(string: "", substring: "a")) // 0
print(howManyTimes(string: "aaa", substring: "a")) // 3
print(howManyTimes(string: "aaaa", substring: "aa")) // 3
``` // XCTAssertTrue failedfunc sortNumbers(numbers: String) -> String {
let nums = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
let numArray = numbers.components(separatedBy: " ")
let sortedArray = numArray.sorted { nums.index(of: $0) != nil, nums.index(of: $1) != nil ? nums.index(of: $0) != nil : true }
return sortedArray.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 = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
let numArray = numbers.components(separatedBy: " ")
let sortedArray = numArray.sorted { nums.index(of: $0) != nil, nums.index(of: $1) != nil ? nums.index(of: $0) != nil : true }
return sortedArray.joined(separator: " ")
}
sortNumbers(numbers: "three one five")
`````````python
def sort_numbers(numbers):
nums = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
num_array = numbers.split()
sorted_array = sorted(num_array, key=lambda x: nums.index(x))
return " ".join(sorted_array)
sort_numbers("three one five")
```let sortedArray = numArray.sorted { nums.index(of: $0) != nil, nums.index(of: $1) != nil ? nums.index(of: $0) != nil : true } // contextual closure type '(String, String) throws -> Bool' expects 2 arguments, but 1 was used in closure bodylet sortedArray = numArray.sorted { nums.index(of: $0) != nil, nums.index(of: $1) != nil ? nums.index(of: $0) != nil : true } // consecutive statements on a line must be separated by ';'let sortedArray = numArray.sorted { nums.index(of: $0) != nil, nums.index(of: $1) != nil ? nums.index(of: $0) != nil : true } // expected expressionfunc sortNumbers(numbers: String) -> String {
let numDict: [String: Int] = ["zero": 0, "one": 1, "two": 2, "three": 3, "four": 4, "five": 5, "six": 6, "seven": 7, "eight": 8, "nine": 9]
let numArray = numbers.components(separatedBy: " ")
let sortedArray = numArray.sorted { numDict[$0] ?? 0 < numDict[$1] ?? 0 }
return sortedArray.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 numDict: [String: Int] = ["zero": 0, "one": 1, "two": 2, "three": 3, "four": 4, "five": 5, "six": 6, "seven": 7, "eight": 8, "nine": 9]
let numArray = numbers.components(separatedBy: " ")
let sortedArray = numArray.sorted { numDict[$0] ?? 0 < numDict[$1] ?? 0 }
return sortedArray.joined(separator: " ")
}
sortNumbers(numbers: "three one five")
`````````python
def sort_numbers(numbers):
num_dict = {"zero": 0, "one": 1, "two": 2, "three": 3, "four": 4, "five": 5, "six": 6, "seven": 7, "eight": 8, "nine": 9}
num_array = numbers.split()
sorted_array = sorted(num_array, key=lambda x: num_dict[x])
return " ".join(sorted_array)
sort_numbers("three one five")
```func sortNumbers(numbers: String) -> String {
let numDict: [String: Int] = ["zero": 0, "one": 1, "two": 2, "three": 3, "four": 4, "five": 5, "six": 6, "seven": 7, "eight": 8, "nine": 9]
let numArray = numbers.components(separatedBy: " ")
let sortedArray = numArray.sorted { numDict[$0] ?? 0 < numDict[$1] ?? 0 }
return sortedArray.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 numDict: [String: Int] = ["zero": 0, "one": 1, "two": 2, "three": 3, "four": 4, "five": 5, "six": 6, "seven": 7, "eight": 8, "nine": 9]
let numArray = numbers.components(separatedBy: " ")
let sortedArray = numArray.sorted { numDict[$0] ?? 0 < numDict[$1] ?? 0 }
return sortedArray.joined(separator: " ")
}
sortNumbers(numbers: "three one five")
``````func sortNumbers(numbers: String) -> String {
let nums = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
let numArr = numbers.components(separatedBy: " ")
let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! }
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 {
let nums = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
let numArr = numbers.components(separatedBy: " ")
let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! }
return sorted.joined(separator: " ")
}
sortNumbers(numbers: "three one five")
``````let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'func sortNumbers(numbers: String) -> String {
let nums = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
let numArr = numbers.components(separatedBy: " ")
let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! }
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 {
let nums = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
let numArr = numbers.components(separatedBy: " ")
let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! }
return sorted.joined(separator: " ")
}
sortNumbers(numbers: "three one five")
``````let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'func sortNumbers(numbers: String) -> String {
let numDict: [String: Int] = ["zero": 0, "one": 1, "two": 2, "three": 3, "four": 4, "five": 5, "six": 6, "seven": 7, "eight": 8, "nine": 9]
let numArr = numbers.components(separatedBy: " ")
let sortedArr = numArr.sorted { numDict[$0] != nil && numDict[$1] != nil ? numDict[$0] != numDict[$1] : $0 < $1 }
return sortedArr.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 numDict: [String: Int] = ["zero": 0, "one": 1, "two": 2, "three": 3, "four": 4, "five": 5, "six": 6, "seven": 7, "eight": 8, "nine": 9]
let numArr = numbers.components(separatedBy: " ")
let sortedArr = numArr.sorted { numDict[$0] != nil && numDict[$1] != nil ? numDict[$0] != numDict[$1] : $0 < $1 }
return sortedArr.joined(separator: " ")
}
sortNumbers(numbers: "three one five")
`````` // XCTAssertTrue failedfunc sortNumbers(numbers: String) -> String {
let nums = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
let numArr = numbers.components(separatedBy: " ")
let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! }
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 {
let nums = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
let numArr = numbers.components(separatedBy: " ")
let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! }
return sorted.joined(separator: " ")
}
sortNumbers(numbers: "three one five")
``````let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'let sorted = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'func sortNumbers(numbers: String) -> String {
let numDict: [String: Int] = ["zero": 0, "one": 1, "two": 2, "three": 3, "four": 4, "five": 5, "six": 6, "seven": 7, "eight": 8, "nine": 9]
let numArray = numbers.components(separatedBy: " ")
let sortedArray = numArray.sorted { numDict[$0] ?? 0 < numDict[$1] ?? 0 }
return sortedArray.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 numDict: [String: Int] = ["zero": 0, "one": 1, "two": 2, "three": 3, "four": 4, "five": 5, "six": 6, "seven": 7, "eight": 8, "nine": 9]
let numArray = numbers.components(separatedBy: " ")
let sortedArray = numArray.sorted { numDict[$0] ?? 0 < numDict[$1] ?? 0 }
return sortedArray.joined(separator: " ")
}
sortNumbers(numbers: "three one five")
`````````python
def sort_numbers(numbers):
num_dict = {"zero": 0, "one": 1, "two": 2, "three": 3, "four": 4, "five": 5, "six": 6, "seven": 7, "eight": 8, "nine": 9}
num_array = numbers.split()
sorted_array = sorted(num_array, key=lambda x: num_dict[x])
return " ".join(sorted_array)
sort_numbers("three one five")
```func sortNumbers(numbers: String) -> String {
let nums = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
let numArr = numbers.components(separatedBy: " ")
let sortedArr = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! }
return sortedArr.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 = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
let numArr = numbers.components(separatedBy: " ")
let sortedArr = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! }
return sortedArr.joined(separator: " ")
}
sortNumbers(numbers: "three one five")
`````````python
def sort_numbers(numbers):
nums = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
num_arr = numbers.split()
sorted_arr = sorted(num_arr, key=lambda x: nums.index(x))
return ' '.join(sorted_arr)
sort_numbers("three one five")
```let sortedArr = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'let sortedArr = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'let sortedArr = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'let sortedArr = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'let sortedArr = numArr.sorted { nums.index(of: $0) != nil ? nums.index(of: $0)! < nums.index(of: $1)! : nums.index(of: $0)! < nums.index(of: $1)! } // 'index(of:)' is deprecated: renamed to 'firstIndex(of:)'func sortNumbers(numbers: String) -> String {
let numDict: [String: Int] = ["zero": 0, "one": 1, "two": 2, "three": 3, "four": 4, "five": 5, "six": 6, "seven": 7, "eight": 8, "nine": 9]
let numArray = numbers.components(separatedBy: " ")
let sortedArray = numArray.sorted { numDict[$0] ?? 0 < numDict[$1] ?? 0 }
return sortedArray.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 numDict: [String: Int] = ["zero": 0, "one": 1, "two": 2, "three": 3, "four": 4, "five": 5, "six": 6, "seven": 7, "eight": 8, "nine": 9]
let numArray = numbers.components(separatedBy: " ")
let sortedArray = numArray.sorted { numDict[$0] ?? 0 < numDict[$1] ?? 0 }
return sortedArray.joined(separator: " ")
}
sortNumbers(numbers: "three one five")
``````func findClosestElements(numbers: [Double]) -> (Double, Double) {
var sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 0..<sortedNumbers.count - 1 {
if sortedNumbers[i + 1] - sortedNumbers[i] < minDiff {
minDiff = sortedNumbers[i + 1] - sortedNumbers[i]
result = (sortedNumbers[i], sortedNumbers[i + 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 sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 0..<sortedNumbers.count - 1 {
if sortedNumbers[i + 1] - sortedNumbers[i] < minDiff {
minDiff = sortedNumbers[i + 1] - sortedNumbers[i]
result = (sortedNumbers[i], sortedNumbers[i + 1])
}
}
return result
}
``````
```swift
func findClosestElements(numbers: [Double]) -> (Double, Double) {
var sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 0..<sortedNumbers.count - 1 {
if sortedNumbers[i + 1] - sortedNumbers[i] < minDiff {
minDiff = sortedNumbers[i + 1] - sortedNumbers[i]
result = (sortedNumbers[i], sortedNumbers[i + 1])
}
}
return result
}
findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2])
```var sortedNumbers = numbers.sorted() // variable 'sortedNumbers' was never mutated; consider changing to 'let' constantfunc findClosestElements(numbers: [Double]) -> (Double, Double) {
var sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 2..<sortedNumbers.count {
let diff = sortedNumbers[i] - sortedNumbers[i-1]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i-1], sortedNumbers[i])
}
}
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 sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 2..<sortedNumbers.count {
let diff = sortedNumbers[i] - sortedNumbers[i-1]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i-1], sortedNumbers[i])
}
}
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 sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 2..<sortedNumbers.count {
let diff = sortedNumbers[i] - sortedNumbers[i-1]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i-1], sortedNumbers[i])
}
}
return result
}
findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2])
```var sortedNumbers = numbers.sorted() // variable 'sortedNumbers' was never mutated; consider changing to 'let' constantfunc findClosestElements(numbers: [Double]) -> (Double, Double) {
var sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 0..<sortedNumbers.count - 1 {
let diff = sortedNumbers[i+1] - sortedNumbers[i]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i], sortedNumbers[i+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 sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 0..<sortedNumbers.count - 1 {
let diff = sortedNumbers[i+1] - sortedNumbers[i]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i], sortedNumbers[i+1])
}
}
return result
}
``````
```swift
// Test the function with the given test cases
print(findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2])) // Expected output: (2.0, 2.2)
print(findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0])) // Expected output: (2.0, 2.0)
```var sortedNumbers = numbers.sorted() // variable 'sortedNumbers' was never mutated; consider changing to 'let' constantfunc findClosestElements(numbers: [Double]) -> (Double, Double) {
var sortedNumbers = numbers.sorted()
var closestElements = (sortedNumbers[0], sortedNumbers[1])
var smallestDifference = sortedNumbers[1] - sortedNumbers[0]
for i in 0..<sortedNumbers.count - 1 {
let difference = sortedNumbers[i + 1] - sortedNumbers[i]
if difference < smallestDifference {
smallestDifference = difference
closestElements = (sortedNumbers[i], sortedNumbers[i + 1])
}
}
return closestElements
}```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 sortedNumbers = numbers.sorted()
var closestElements = (sortedNumbers[0], sortedNumbers[1])
var smallestDifference = sortedNumbers[1] - sortedNumbers[0]
for i in 0..<sortedNumbers.count - 1 {
let difference = sortedNumbers[i + 1] - sortedNumbers[i]
if difference < smallestDifference {
smallestDifference = difference
closestElements = (sortedNumbers[i], sortedNumbers[i + 1])
}
}
return closestElements
}
``````
```swift
// Testing the function
print(findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2])) // Expected output: (2.0, 2.2)
print(findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0])) // Expected output: (2.0, 2.0)
```var sortedNumbers = numbers.sorted() // variable 'sortedNumbers' was never mutated; consider changing to 'let' constantfunc findClosestElements(numbers: [Double]) -> (Double, Double) {
var sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 0..<sortedNumbers.count - 1 {
let diff = sortedNumbers[i+1] - sortedNumbers[i]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i], sortedNumbers[i+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 sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 0..<sortedNumbers.count - 1 {
let diff = sortedNumbers[i+1] - sortedNumbers[i]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i], sortedNumbers[i+1])
}
}
return result
}
``````
```swift
// Testing the function
print(findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2])) // Expected output: (2.0, 2.2)
print(findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0])) // Expected output: (2.0, 2.0)
```var sortedNumbers = numbers.sorted() // variable 'sortedNumbers' was never mutated; consider changing to 'let' constantfunc findClosestElements(numbers: [Double]) -> (Double, Double) {
var sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 0..<sortedNumbers.count - 1 {
let diff = sortedNumbers[i+1] - sortedNumbers[i]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i], sortedNumbers[i+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 sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 0..<sortedNumbers.count - 1 {
let diff = sortedNumbers[i+1] - sortedNumbers[i]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i], sortedNumbers[i+1])
}
}
return result
}
``````
```swift
func findClosestElements(numbers: [Double]) -> (Double, Double) {
var sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 0..<sortedNumbers.count - 1 {
let diff = sortedNumbers[i+1] - sortedNumbers[i]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i], sortedNumbers[i+1])
}
}
return result
}
// Test cases
print(findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2])) // (2.0, 2.2)
print(findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0])) // (2.0, 2.0)
```var sortedNumbers = numbers.sorted() // variable 'sortedNumbers' was never mutated; consider changing to 'let' constantfunc findClosestElements(numbers: [Double]) -> (Double, Double) {
var sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 0..<sortedNumbers.count - 1 {
let diff = sortedNumbers[i + 1] - sortedNumbers[i]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i], sortedNumbers[i + 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 sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 0..<sortedNumbers.count - 1 {
let diff = sortedNumbers[i + 1] - sortedNumbers[i]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i], sortedNumbers[i + 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 sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 0..<sortedNumbers.count - 1 {
let diff = sortedNumbers[i + 1] - sortedNumbers[i]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i], sortedNumbers[i + 1])
}
}
return result
}
// Test cases
print(findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2])) // (2.0, 2.2)
print(findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0])) // (2.0, 2.0)
```var sortedNumbers = numbers.sorted() // variable 'sortedNumbers' was never mutated; consider changing to 'let' constantfunc findClosestElements(numbers: [Double]) -> (Double, Double) {
var sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 0..<sortedNumbers.count - 1 {
let diff = sortedNumbers[i + 1] - sortedNumbers[i]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i], sortedNumbers[i + 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 sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 0..<sortedNumbers.count - 1 {
let diff = sortedNumbers[i + 1] - sortedNumbers[i]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i], sortedNumbers[i + 1])
}
}
return result
}
``````
```swift
// Testing the function
print(findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2])) // (2.0, 2.2)
print(findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0])) // (2.0, 2.0)
```var sortedNumbers = numbers.sorted() // variable 'sortedNumbers' was never mutated; consider changing to 'let' constantfunc findClosestElements(numbers: [Double]) -> (Double, Double) {
var sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 0..<sortedNumbers.count - 1 {
let diff = sortedNumbers[i + 1] - sortedNumbers[i]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i], sortedNumbers[i + 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 sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 0..<sortedNumbers.count - 1 {
let diff = sortedNumbers[i + 1] - sortedNumbers[i]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i], sortedNumbers[i + 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 sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 0..<sortedNumbers.count - 1 {
let diff = sortedNumbers[i + 1] - sortedNumbers[i]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i], sortedNumbers[i + 1])
}
}
return result
}
// Test cases
print(findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2])) // (2.0, 2.2)
print(findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0])) // (2.0, 2.0)
```var sortedNumbers = numbers.sorted() // variable 'sortedNumbers' was never mutated; consider changing to 'let' constantfunc findClosestElements(numbers: [Double]) -> (Double, Double) {
var sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 2..<sortedNumbers.count {
let diff = sortedNumbers[i] - sortedNumbers[i-1]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i-1], sortedNumbers[i])
}
}
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 sortedNumbers = numbers.sorted()
var minDiff = sortedNumbers[1] - sortedNumbers[0]
var result = (sortedNumbers[0], sortedNumbers[1])
for i in 2..<sortedNumbers.count {
let diff = sortedNumbers[i] - sortedNumbers[i-1]
if diff < minDiff {
minDiff = diff
result = (sortedNumbers[i-1], sortedNumbers[i])
}
}
return result
}
``````
```swift
// Testing the function
print(findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.2])) // (2.0, 2.2)
print(findClosestElements(numbers: [1.0, 2.0, 3.0, 4.0, 5.0, 2.0])) // (2.0, 2.0)
```var sortedNumbers = numbers.sorted() // variable 'sortedNumbers' was never mutated; consider changing to 'let' constantfunc rescaleToUnit(numbers: [Double]) -> [Double] {
let min = numbers.min() ?? 0
let max = numbers.max() ?? 0
let range = max - min
return numbers.map { ($0 - min) / range }
}```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() ?? 0
let max = numbers.max() ?? 0
let range = max - min
return numbers.map { ($0 - min) / range }
}
rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0])
```
```python
def rescale_to_unit(numbers):
min_val = min(numbers)
max_val = max(numbers)
range_val = max_val - min_val
return [(num - min_val) / range_val for num in numbers]
rescale_to_unit([1.0, 2.0, 3.0, 4.0, 5.0])
```func rescaleToUnit(numbers: [Double]) -> [Double] {
let min = numbers.min() ?? 0
let max = numbers.max() ?? 0
let range = max - min
return numbers.map { ($0 - min) / range }
}```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() ?? 0
let max = numbers.max() ?? 0
let range = max - min
return numbers.map { ($0 - min) / range }
}
rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0])
``````func rescaleToUnit(numbers: [Double]) -> [Double] {
let min = numbers.min() ?? 0
let max = numbers.max() ?? 0
let range = max - min
return numbers.map { ($0 - min) / range }
}```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() ?? 0
let max = numbers.max() ?? 0
let range = max - min
return numbers.map { ($0 - min) / range }
}
// 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() ?? 0
let max = numbers.max() ?? 0
let range = max - min
return numbers.map { ($0 - min) / range }
}
``````python
def rescale_to_unit(numbers):
min_num = min(numbers)
max_num = max(numbers)
range_num = max_num - min_num
return [(num - min_num) / range_num for num in numbers]
rescale_to_unit([1.0, 2.0, 3.0, 4.0, 5.0])
```func rescaleToUnit(numbers: [Double]) -> [Double] {
let min = numbers.min() ?? 0
let max = numbers.max() ?? 0
let range = max - min
return numbers.map { ($0 - min) / range }
}```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() ?? 0
let max = numbers.max() ?? 0
let range = max - min
return numbers.map { ($0 - min) / range }
}
`````````swift
func rescaleToUnit(numbers: [Double]) -> [Double] {
let min = numbers.min() ?? 0
let max = numbers.max() ?? 0
let range = max - min
return numbers.map { ($0 - min) / range }
}
rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0])
```func rescaleToUnit(numbers: [Double]) -> [Double] {
var min = numbers[0]
var max = numbers[0]
for num in numbers {
if num < min {
min = num
}
if num > max {
max = num
}
}
var rescaled = [Double]()
for num in numbers {
rescaled.append((num - min) / (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 num in numbers {
if num < min {
min = num
}
if num > max {
max = num
}
}
var rescaled = [Double]()
for num in numbers {
rescaled.append((num - min) / (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 num in numbers {
if num < min {
min = num
}
if num > max {
max = num
}
}
var rescaled = [Double]()
for num in numbers {
rescaled.append((num - min) / (max - min))
}
return rescaled
}
rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0])
```func rescaleToUnit(numbers: [Double]) -> [Double] {
let min = numbers.min() ?? 0
let max = numbers.max() ?? 0
let range = max - min
return numbers.map { ($0 - min) / range }
}```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() ?? 0
let max = numbers.max() ?? 0
let range = max - min
return numbers.map { ($0 - min) / range }
}
`````````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() ?? 0
let max = numbers.max() ?? 0
let range = max - min
return numbers.map { ($0 - min) / range }
}
// Test the function
let numbers = [1.0, 2.0, 3.0, 4.0, 5.0]
let rescaledNumbers = rescaleToUnit(numbers: numbers)
print(rescaledNumbers)
```func rescaleToUnit(numbers: [Double]) -> [Double] {
var min = numbers[0]
var max = numbers[0]
for num in numbers {
if num < min {
min = num
}
if num > max {
max = num
}
}
var rescaled = [Double]()
for num in numbers {
rescaled.append((num - min) / (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 num in numbers {
if num < min {
min = num
}
if num > max {
max = num
}
}
var rescaled = [Double]()
for num in numbers {
rescaled.append((num - min) / (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 num in numbers {
if num < min {
min = num
}
if num > max {
max = num
}
}
var rescaled = [Double]()
for num in numbers {
rescaled.append((num - min) / (max - min))
}
return rescaled
}
rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0])
```func rescaleToUnit(numbers: [Double]) -> [Double] {
var min = numbers[0]
var max = numbers[0]
for num in numbers {
if num < min {
min = num
}
if num > max {
max = num
}
}
var rescaled = [Double]()
for num in numbers {
let rescaledNum = (num - min) / (max - min)
rescaled.append(rescaledNum)
}
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 num in numbers {
if num < min {
min = num
}
if num > max {
max = num
}
}
var rescaled = [Double]()
for num in numbers {
let rescaledNum = (num - min) / (max - min)
rescaled.append(rescaledNum)
}
return rescaled
}
rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0])
``````func rescaleToUnit(numbers: [Double]) -> [Double] {
var min = numbers[0]
var max = numbers[0]
for number in numbers {
if number < min {
min = number
}
if number > max {
max = number
}
}
var rescaled = [Double]()
for number in numbers {
rescaled.append((number - min) / (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 number in numbers {
if number < min {
min = number
}
if number > max {
max = number
}
}
var rescaled = [Double]()
for number in numbers {
rescaled.append((number - min) / (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 number in numbers {
if number < min {
min = number
}
if number > max {
max = number
}
}
var rescaled = [Double]()
for number in numbers {
rescaled.append((number - min) / (max - min))
}
return rescaled
}
rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0])
```func rescaleToUnit(numbers: [Double]) -> [Double] {
let min = numbers.min() ?? 0
let max = numbers.max() ?? 0
let range = max - min
return numbers.map { ($0 - min) / range }
}```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() ?? 0
let max = numbers.max() ?? 0
let range = max - min
return numbers.map { ($0 - min) / range }
}
`````````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() ?? 0
let max = numbers.max() ?? 0
let range = max - min
return numbers.map { ($0 - min) / range }
}
rescaleToUnit(numbers: [1.0, 2.0, 3.0, 4.0, 5.0])
```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 }
}
filterIntegers(values: ["a", 3.14, 5]) // [5]
filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) // [1, 2, 3]
`````````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 }
}
filterIntegers(values: ["a", 3.14, 5]) // [5]
filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) // [1, 2, 3]
```return values.filter { $0 is Int }.map { $0 as Int } // 'AnyHashable' is not convertible to 'Int'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 }
}
// Test cases
print(filterIntegers(values: ["a", 3.14, 5])) // [5]
print(filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]])) // [1, 2, 3]
`````````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 }
}
// Test cases
print(filterIntegers(values: ["a", 3.14, 5])) // [5]
print(filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]])) // [1, 2, 3]
```return values.filter { $0 is Int }.map { $0 as Int } // 'AnyHashable' is not convertible to 'Int'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 }
}
// Test cases
print(filterIntegers(values: ["a", 3.14, 5])) // [5]
print(filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]])) // [1, 2, 3]
`````````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 }
}
// Test cases
print(filterIntegers(values: ["a", 3.14, 5])) // [5]
print(filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]])) // [1, 2, 3]
```return values.filter { $0 is Int }.map { $0 as Int } // 'AnyHashable' is not convertible to 'Int'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 }
}
// Test cases
print(filterIntegers(values: ["a", 3.14, 5])) // [5]
print(filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]])) // [1, 2, 3]
`````````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 }
}
// Test cases
print(filterIntegers(values: ["a", 3.14, 5])) // [5]
print(filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]])) // [1, 2, 3]
```return values.filter { $0 is Int }.map { $0 as Int } // 'AnyHashable' is not convertible to 'Int'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 }
}
let values = ["a", 3.14, 5]
let integers = filterIntegers(values: values)
print(integers)
`````````python
# Filter given array of any python values only for integers
# filter_integers(values=["a", 3.14, 5]) == [5]
# filter_integers(values=[1, 2, 3, "abc", {}, []]) == [1, 2, 3]
def filter_integers(values):
return [value for value in values if isinstance(value, int)]
values = ["a", 3.14, 5]
integers = filter_integers(values)
print(integers)
```return values.filter { $0 is Int }.map { $0 as Int } // 'AnyHashable' is not convertible to 'Int'func filterIntegers(values: [AnyHashable]) -> [Int] {
return values.compactMap { $0 as? Int }
}
func filterStrings(values: [AnyHashable]) -> [String] {
return values.compactMap { $0 as? String }
}
func filterArrays(values: [AnyHashable]) -> [AnyHashable] {
return values.compactMap { $0 as? [AnyHashable] }
}
func filterDictionaries(values: [AnyHashable]) -> [AnyHashable : AnyHashable] {
return values.compactMap { $0 as? [AnyHashable : AnyHashable] }
}```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.compactMap { $0 as? Int }
}
// 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.compactMap { $0 as? String }
}
// 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]]) == [[] as [AnyHashable]]
func filterArrays(values: [AnyHashable]) -> [AnyHashable] {
return values.compactMap { $0 as? [AnyHashable] }
}
// 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]]) == [[:] as [AnyHashable : AnyHashable]]
func filterDictionaries(values: [AnyHashable]) -> [AnyHashable : AnyHashable] {
return values.compactMap { $0 as? [AnyHashable : AnyHashable] }
}
``````return values.compactMap { $0 as? [AnyHashable : AnyHashable] } // cannot convert return expression of type '[[AnyHashable : AnyHashable]]' to return type '[AnyHashable : AnyHashable]'func filterIntegers(values: [AnyHashable]) -> [Int] {
return values.compactMap { $0 as? Int }
}
func filterStrings(values: [AnyHashable]) -> [String] {
return values.compactMap { $0 as? String }
}
func filterDictionaries(values: [AnyHashable]) -> [Dictionary<AnyHashable, AnyHashable>] {
return values.compactMap { $0 as? Dictionary<AnyHashable, AnyHashable> }
}
func filterArrays(values: [AnyHashable]) -> [Array<AnyHashable>] {
return values.compactMap { $0 as? Array<AnyHashable> }
}```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.compactMap { $0 as? Int }
}
// 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.compactMap { $0 as? String }
}
// 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]]) == [[:] as [AnyHashable : AnyHashable]]
func filterDictionaries(values: [AnyHashable]) -> [Dictionary<AnyHashable, AnyHashable>] {
return values.compactMap { $0 as? Dictionary<AnyHashable, AnyHashable> }
}
// 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]]) == [[] as [AnyHashable]]
func filterArrays(values: [AnyHashable]) -> [Array<AnyHashable>] {
return values.compactMap { $0 as? Array<AnyHashable> }
}
``````func filterIntegers(values: [AnyHashable]) -> [Int] {
return values.compactMap { $0 as? Int }
}
func main() {
print(filterIntegers(values: ["a", 3.14, 5]))
print(filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]))
}```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.compactMap { $0 as? Int }
}
func main() {
print(filterIntegers(values: ["a", 3.14, 5]))
print(filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]))
}
main()
``````
```python
# Filter given array of any python values only for integers
# filter_integers(["a", 3.14, 5]) == [5]
# filter_integers([1, 2, 3, "abc", {}, []]) == [1, 2, 3]
def filter_integers(values):
return [value for value in values if isinstance(value, int)]
def main():
print(filter_integers(["a", 3.14, 5]))
print(filter_integers([1, 2, 3, "abc", {}, []]))
main()
```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 }
}
`````````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 }
}
// Test cases
print(filterIntegers(values: ["a", 3.14, 5])) // [5]
print(filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]])) // [1, 2, 3]
```return values.filter { $0 is Int }.map { $0 as Int } // 'AnyHashable' is not convertible to 'Int'func filterIntegers(values: [AnyHashable]) -> [Int] {
return values.compactMap { $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.compactMap { $0 as? Int }
}
filterIntegers(values: ["a", 3.14, 5]) // [5]
filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) // [1, 2, 3]
`````````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.compactMap { $0 as? Int }
}
filterIntegers(values: ["a", 3.14, 5]) // [5]
filterIntegers(values: [1, 2, 3, "abc", [:] as [AnyHashable : AnyHashable], [] as [AnyHashable]]) // [1, 2, 3]
```func strlen(string: String) -> Int {
return string.count
}
func reverse(string: String) -> String {
return String(string.reversed())
}
func isPalindrome(string: String) -> Bool {
return string == reverse(string: string)
}
func isEmpty(string: String) -> Bool {
return string.isEmpty
}
func isWhitespace(string: String) -> Bool {
return string.trimmingCharacters(in: .whitespaces).isEmpty
}
func isAlphanumeric(string: String) -> Bool {
return string.rangeOfCharacter(from: .alphanumerics) == nil
}
func isLowercase(string: String) -> Bool {
return string.rangeOfCharacter(from: .lowercaseLetters) == nil
}
func isUppercase(string: String) -> Bool {
return string.rangeOfCharacter(from: .uppercaseLetters) == nil
}
func isLetter(string: String) -> Bool {
return string.rangeOfCharacter(from: .letters) == nil
}
func isDigit(string: String) -> Bool {
return string.rangeOfCharacter(from: .decimalDigits) == nil
}
func isHexadecimal(string: String) -> Bool {
return string.rangeOfCharacter(from: .hexadecimalDigits) == nil
}
func isOctal(string: String) -> Bool {
return string.rangeOfCharacter(from: .octalDigits) == nil
}```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
return string.count
}
// Return reversed string
// reverse(string: "") == ""
// reverse(string: "abc") == "cba"
func reverse(string: String) -> String {
return String(string.reversed())
}
// Return true if string is palindrome
// isPalindrome(string: "") == true
// isPalindrome(string: "abc") == false
// isPalindrome(string: "aba") == true
func isPalindrome(string: String) -> Bool {
return string == reverse(string: string)
}
// Return true if string is empty
// isEmpty(string: "") == true
// isEmpty(string: "abc") == false
func isEmpty(string: String) -> Bool {
return string.isEmpty
}
// Return true if string contains only whitespace characters
// isWhitespace(string: "") == true
// isWhitespace(string: "abc") == false
// isWhitespace(string: " ") == true
func isWhitespace(string: String) -> Bool {
return string.trimmingCharacters(in: .whitespaces).isEmpty
}
// Return true if string contains only alphanumeric characters
// isAlphanumeric(string: "") == true
// isAlphanumeric(string: "abc") == true
// isAlphanumeric(string: "abc123") == true
// isAlphanumeric(string: "abc 123") == false
func isAlphanumeric(string: String) -> Bool {
return string.rangeOfCharacter(from: .alphanumerics) == nil
}
// Return true if string contains only lowercase characters
// isLowercase(string: "") == true
// isLowercase(string: "abc") == true
// isLowercase(string: "ABC") == false
func isLowercase(string: String) -> Bool {
return string.rangeOfCharacter(from: .lowercaseLetters) == nil
}
// Return true if string contains only uppercase characters
// isUppercase(string: "") == true
// isUppercase(string: "ABC") == true
// isUppercase(string: "abc") == false
func isUppercase(string: String) -> Bool {
return string.rangeOfCharacter(from: .uppercaseLetters) == nil
}
// Return true if string contains only letters (lowercase or uppercase)
// isLetter(string: "") == true
// isLetter(string: "abc") == true
// isLetter(string: "ABC") == true
// isLetter(string: "123") == false
func isLetter(string: String) -> Bool {
return string.rangeOfCharacter(from: .letters) == nil
}
// Return true if string contains only digits
// isDigit(string: "") == true
// isDigit(string: "123") == true
// isDigit(string: "abc") == false
func isDigit(string: String) -> Bool {
return string.rangeOfCharacter(from: .decimalDigits) == nil
}
// Return true if string contains only hexadecimal digits
// isHexadecimal(string: "") == true
// isHexadecimal(string: "123") == true
// isHexadecimal(string: "abc") == false
func isHexadecimal(string: String) -> Bool {
return string.rangeOfCharacter(from: .hexadecimalDigits) == nil
}
// Return true if string contains only octal digits
// isOctal(string: "") == true
// isOctal(string: "123") == true
// isOctal(string: "abc") == false
func isOctal(string: String) -> Bool {
return string.rangeOfCharacter(from: .octalDigits) == nil
}
// Return true if string contains only binary digits
// isBinary(string: "") == true
// isBinary(string: "123") == true
// isBinary(string: "abc") == false
func isreturn string.rangeOfCharacter(from: .hexadecimalDigits) == nil // type 'CharacterSet' has no member 'hexadecimalDigits'return string.rangeOfCharacter(from: .octalDigits) == nil // type 'CharacterSet' has no member 'octalDigits'func strlen(string: String) -> Int {
return string.count
}
func reverse(string: String) -> String {
return String(string.reversed())
}
func isPalindrome(string: String) -> Bool {
return string == String(string.reversed())
}
func isEmpty(string: String) -> Bool {
return string.count == 0
}
func isNotEmpty(string: String) -> Bool {
return string.count != 0
}
func isEqual(string1: String, string2: String) -> Bool {
return string1 == string2
}
func isNotEqual(string1: String, string2: String) -> Bool {
return string1 != string2
}
func contains(string: String, substring: String) -> Bool {
return string.contains(substring)
}
func doesNotContain(string: String, substring: String) -> Bool {
return !string.contains(substring)
}
func startsWith(string: String, prefix: String) -> Bool {
return string.hasPrefix(prefix)
}
func endsWith(string: String, suffix: String) -> Bool {
return string.hasSuffix(suffix)
}
func isNumber(string: String) -> Bool {
return string.range(of: "\\d+", options: .regularExpression) != nil
}
func isNotNumber(string: String) -> Bool {
return string.range(of: "\\d+", options: .regularExpression) == nil
}
func isAlphanumeric(string: String) -> Bool {
return string.range(of: "\\w+", options: .regularExpression) != nil
}```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
return string.count
}
// Return reversed string
// reverse(string: "") == ""
// reverse(string: "abc") == "cba"
func reverse(string: String) -> String {
return String(string.reversed())
}
// Return true if string is palindrome
// isPalindrome(string: "") == true
// isPalindrome(string: "abc") == false
// isPalindrome(string: "aba") == true
func isPalindrome(string: String) -> Bool {
return string == String(string.reversed())
}
// Return true if string is empty
// isEmpty(string: "") == true
// isEmpty(string: "abc") == false
func isEmpty(string: String) -> Bool {
return string.count == 0
}
// Return true if string is not empty
// isNotEmpty(string: "") == false
// isNotEmpty(string: "abc") == true
func isNotEmpty(string: String) -> Bool {
return string.count != 0
}
// Return true if string is equal to another string
// isEqual(string1: "abc", string2: "abc") == true
// isEqual(string1: "abc", string2: "def") == false
func isEqual(string1: String, string2: String) -> Bool {
return string1 == string2
}
// Return true if string is not equal to another string
// isNotEqual(string1: "abc", string2: "abc") == false
// isNotEqual(string1: "abc", string2: "def") == true
func isNotEqual(string1: String, string2: String) -> Bool {
return string1 != string2
}
// Return true if string contains another string
// contains(string: "abc", substring: "b") == true
// contains(string: "abc", substring: "d") == false
func contains(string: String, substring: String) -> Bool {
return string.contains(substring)
}
// Return true if string does not contain another string
// doesNotContain(string: "abc", substring: "b") == false
// doesNotContain(string: "abc", substring: "d") == true
func doesNotContain(string: String, substring: String) -> Bool {
return !string.contains(substring)
}
// Return true if string starts with another string
// startsWith(string: "abc", prefix: "a") == true
// startsWith(string: "abc", prefix: "b") == false
func startsWith(string: String, prefix: String) -> Bool {
return string.hasPrefix(prefix)
}
// Return true if string ends with another string
// endsWith(string: "abc", suffix: "c") == true
// endsWith(string: "abc", suffix: "b") == false
func endsWith(string: String, suffix: String) -> Bool {
return string.hasSuffix(suffix)
}
// Return true if string is a number
// isNumber(string: "123") == true
// isNumber(string: "abc") == false
func isNumber(string: String) -> Bool {
return string.range(of: "\\d+", options: .regularExpression) != nil
}
// Return true if string is not a number
// isNotNumber(string: "123") == false
// isNotNumber(string: "abc") == true
func isNotNumber(string: String) -> Bool {
return string.range(of: "\\d+", options: .regularExpression) == nil
}
// Return true if string is alphanumeric
// isAlphanumeric(string: "123") == true
// isAlphanumeric(string: "abc") == true
// isAlphanumeric(string: "abc123") == true
// isAlphanumeric(string: "") == false
func isAlphanumeric(string: String) -> Bool {
return string.range(of: "\\w+", options: .regularExpression) != nil
}
// Return true if string is not alphanfunc strlen(string: String) -> Int {
return string.count
}
func reverse(string: String) -> String {
return String(string.reversed())
}
func isPalindrome(string: String) -> Bool {
return string == reverse(string: string)
}
func isEmpty(string: String) -> Bool {
return string.count == 0
}
func isDigitsOnly(string: String) -> Bool {
return string.rangeOfCharacter(from: .decimalDigits) != nil
}
func isLettersOnly(string: String) -> Bool {
return string.rangeOfCharacter(from: .letters) != nil
}
func isWhitespaceOnly(string: String) -> Bool {
return string.rangeOfCharacter(from: .whitespaces) != nil
}
func isAlphanumeric(string: String) -> Bool {
return string.rangeOfCharacter(from: .alphanumerics) != nil
}
func isLowercase(string: String) -> Bool {
return string.rangeOfCharacter(from: .lowercaseLetters) != nil
}
func isUppercase(string: String) -> Bool {
return string.rangeOfCharacter(from: .uppercaseLetters) != nil
}
func isAlphabetic(string: String) -> Bool {
return string.rangeOfCharacter(from: .letters) != nil || string.rangeOfCharacter(from: .whitespaces) != nil
}```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
return string.count
}
// Return reversed string
// reverse(string: "") == ""
// reverse(string: "abc") == "cba"
func reverse(string: String) -> String {
return String(string.reversed())
}
// Return true if string is palindrome
// isPalindrome(string: "") == true
// isPalindrome(string: "abc") == false
// isPalindrome(string: "aba") == true
func isPalindrome(string: String) -> Bool {
return string == reverse(string: string)
}
// Return true if string is empty
// isEmpty(string: "") == true
// isEmpty(string: "abc") == false
func isEmpty(string: String) -> Bool {
return string.count == 0
}
// Return true if string contains only digits
// isDigitsOnly(string: "") == false
// isDigitsOnly(string: "abc") == false
// isDigitsOnly(string: "123") == true
func isDigitsOnly(string: String) -> Bool {
return string.rangeOfCharacter(from: .decimalDigits) != nil
}
// Return true if string contains only letters
// isLettersOnly(string: "") == false
// isLettersOnly(string: "abc") == true
// isLettersOnly(string: "123") == false
func isLettersOnly(string: String) -> Bool {
return string.rangeOfCharacter(from: .letters) != nil
}
// Return true if string contains only whitespace
// isWhitespaceOnly(string: "") == false
// isWhitespaceOnly(string: "abc") == false
// isWhitespaceOnly(string: " ") == true
func isWhitespaceOnly(string: String) -> Bool {
return string.rangeOfCharacter(from: .whitespaces) != nil
}
// Return true if string contains only alphanumeric characters
// isAlphanumeric(string: "") == false
// isAlphanumeric(string: "abc") == true
// isAlphanumeric(string: "123") == true
// isAlphanumeric(string: "abc123") == true
func isAlphanumeric(string: String) -> Bool {
return string.rangeOfCharacter(from: .alphanumerics) != nil
}
// Return true if string contains only lowercase letters
// isLowercase(string: "") == false
// isLowercase(string: "abc") == true
// isLowercase(string: "ABC") == false
func isLowercase(string: String) -> Bool {
return string.rangeOfCharacter(from: .lowercaseLetters) != nil
}
// Return true if string contains only uppercase letters
// isUppercase(string: "") == false
// isUppercase(string: "abc") == false
// isUppercase(string: "ABC") == true
func isUppercase(string: String) -> Bool {
return string.rangeOfCharacter(from: .uppercaseLetters) != nil
}
// Return true if string contains only letters and whitespace
// isAlphabetic(string: "") == false
// isAlphabetic(string: "abc") == true
// isAlphabetic(string: "123") == false
// isAlphabetic(string: "abc 123") == false
func isAlphabetic(string: String) -> Bool {
return string.rangeOfCharacter(from: .letters) != nil || string.rangeOfCharacter(from: .whitespaces) != nil
}
// Return true if string contains only letters, digits, and whitespace
// isAlphanumericOrWhitespace(string: "") == false
// isAlphanumericOrWhitespace(string: "abc") == true
// isAlphanumericOrWhitespace(string: "123") == true
// isAlphanumericOrWhitespace(string: "abc 123") == true
func isAlphanumericOrWhitespace(string: String) -> Bool {func strlen(string: String) -> Int {
return string.count
}
func sumOfDigits(string: String) -> Int {
return string.compactMap { Int($0.description) }.reduce(0, +)
}
func reverse(string: String) -> String {
return String(string.reversed())
}
func toUpperCase(string: String) -> String {
return string.uppercased()
}
func toLowerCase(string: String) -> String {
return string.lowercased()
}
func toTitleCase(string: String) -> String {
return string.capitalized
}
func toASCII(string: String) -> String {
return string.map { String($0.asciiValue!) }.joined()
}
func toUnicode(string: String) -> String {
return string.map { String($0) }.joined()
}
func toHTML(string: String) -> String {
return string.replacingOccurrences(of: "&", with: "&")
.replacingOccurrences(of: "<", with: "<")
.replacingOccurrences(of: ">", with: ">")
.replacingOccurrences(of: "\"", with: """)
.replacingOccurrences(of: "'", with: "'")
}
func toURLEncoded(string: String) -> String {
return string.addingPercentEncoding(withAllowedCharacters: .urlPathAllowed) ?? ""
}
func toURLDecoded(string: String) -> String {
return string.addingPercentEncoding(withAllowedCharacters: .urlPathAllowed) ?? ""
}
func toBase64Encoded(string: String) -> String {
return string.data(using: .utf8)!.base64EncodedString()
}```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
return string.count
}
// Return the sum of all digits in a given string
// sumOfDigits(string: "") == 0
// sumOfDigits(string: "abc") == 0
// sumOfDigits(string: "123") == 6
func sumOfDigits(string: String) -> Int {
return string.compactMap { Int($0.description) }.reduce(0, +)
}
// Return the reversed string
// reverse(string: "") == ""
// reverse(string: "abc") == "cba"
func reverse(string: String) -> String {
return String(string.reversed())
}
// Return the string with all characters converted to uppercase
// toUpperCase(string: "") == ""
// toUpperCase(string: "abc") == "ABC"
func toUpperCase(string: String) -> String {
return string.uppercased()
}
// Return the string with all characters converted to lowercase
// toLowerCase(string: "") == ""
// toLowerCase(string: "ABC") == "abc"
func toLowerCase(string: String) -> String {
return string.lowercased()
}
// Return the string with all characters converted to title case
// toTitleCase(string: "") == ""
// toTitleCase(string: "abc") == "Abc"
func toTitleCase(string: String) -> String {
return string.capitalized
}
// Return the string with all characters converted to ASCII
// toASCII(string: "") == ""
// toASCII(string: "abc") == "979899"
func toASCII(string: String) -> String {
return string.map { String($0.asciiValue!) }.joined()
}
// Return the string with all characters converted to Unicode
// toUnicode(string: "") == ""
// toUnicode(string: "abc") == "abc"
func toUnicode(string: String) -> String {
return string.map { String($0) }.joined()
}
// Return the string with all characters converted to HTML entities
// toHTML(string: "") == ""
// toHTML(string: "abc") == "abc"
func toHTML(string: String) -> String {
return string.replacingOccurrences(of: "&", with: "&")
.replacingOccurrences(of: "<", with: "<")
.replacingOccurrences(of: ">", with: ">")
.replacingOccurrences(of: "\"", with: """)
.replacingOccurrences(of: "'", with: "'")
}
// Return the string with all characters converted to URL encoded
// toURLEncoded(string: "") == ""
// toURLEncoded(string: "abc") == "abc"
func toURLEncoded(string: String) -> String {
return string.addingPercentEncoding(withAllowedCharacters: .urlPathAllowed) ?? ""
}
// Return the string with all characters converted to URL decoded
// toURLDecoded(string: "") == ""
// toURLDecoded(string: "abc") == "abc"
func toURLDecoded(string: String) -> String {
return string.addingPercentEncoding(withAllowedCharacters: .urlPathAllowed) ?? ""
}
// Return the string with all characters converted to Base64 encoded
// toBase64Encoded(string: "") == ""
// toBase64Encoded(string: "abc") == "YWJj"
func toBase64Encoded(string: String) -> String {
return string.data(using: .utf8)!.base64EncodedString()
}
// Return the string with all characters converted to Base64 decoded
// toBase64Decoded(string: "") == ""
// toBase64Decoded(string: "YWJj") == "abc"
func toBase64Decoded(string: String) -> String {
return Stringfunc strlen(string: String) -> Int {
return string.count
}
func reverse(string: String) -> String {
return String(string.reversed())
}
func isPalindrome(string: String) -> Bool {
return string == reverse(string: string)
}
func isEmpty(string: String) -> Bool {
return string.isEmpty
}
func isNotEmpty(string: String) -> Bool {
return !isEmpty(string: string)
}
func isNotEmptyAndPalindrome(string: String) -> Bool {
return isNotEmpty(string: string) && isPalindrome(string: string)
}```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
return string.count
}
// Return reversed string
// reverse(string: "") == ""
// reverse(string: "abc") == "cba"
func reverse(string: String) -> String {
return String(string.reversed())
}
// Return true if string is palindrome
// isPalindrome(string: "") == true
// isPalindrome(string: "abc") == false
// isPalindrome(string: "aba") == true
func isPalindrome(string: String) -> Bool {
return string == reverse(string: string)
}
// Return true if string is empty
// isEmpty(string: "") == true
// isEmpty(string: "abc") == false
func isEmpty(string: String) -> Bool {
return string.isEmpty
}
// Return true if string is not empty
// isNotEmpty(string: "") == false
// isNotEmpty(string: "abc") == true
func isNotEmpty(string: String) -> Bool {
return !isEmpty(string: string)
}
// Return true if string is not empty and is palindrome
// isNotEmptyAndPalindrome(string: "") == false
// isNotEmptyAndPalindrome(string: "abc") == false
// isNotEmptyAndPalindrome(string: "aba") == true
func isNotEmptyAndPalindrome(string: String) -> Bool {
return isNotEmpty(string: string) && isPalindrome(string: string)
}
``````
```swift
// Test cases
print(strlen(string: "")) // 0
print(strlen(string: "abc")) // 3
print(reverse(string: "")) // ""
print(reverse(string: "abc")) // "cba"
print(isPalindrome(string: "")) // true
print(isPalindrome(string: "abc")) // false
print(isPalindrome(string: "aba")) // true
print(isEmpty(string: "")) // true
print(isEmpty(string: "abc")) // false
print(isNotEmpty(string: "")) // false
print(isNotEmpty(string: "abc")) // true
print(isNotEmptyAndPalindrome(string: "")) // false
print(isNotEmptyAndPalindrome(string: "abc")) // false
print(isNotEmptyAndPalindrome(string: "aba")) // true
```func strlen(string: String) -> Int {
return string.count
}
func reverse(string: String) -> String {
return String(string.reversed())
}
func isPalindrome(string: String) -> Bool {
return string == reverse(string: string)
}
func isEmpty(string: String) -> Bool {
return string.isEmpty
}
func isNotEmpty(string: String) -> Bool {
return !isEmpty(string: string)
}
func isNotEmptyAndHasLength(string: String) -> Bool {
return !isEmpty(string: string) && strlen(string: string) > 0
}
func isNotEmptyAndHasLengthOrEmpty(string: String) -> Bool {
return !isEmpty(string: string) && strlen(string: string) >= 1
}```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
return string.count
}
// Return reversed string
// reverse(string: "") == ""
// reverse(string: "abc") == "cba"
func reverse(string: String) -> String {
return String(string.reversed())
}
// Return true if string is palindrome
// isPalindrome(string: "") == true
// isPalindrome(string: "abc") == false
// isPalindrome(string: "aba") == true
func isPalindrome(string: String) -> Bool {
return string == reverse(string: string)
}
// Return true if string is empty
// isEmpty(string: "") == true
// isEmpty(string: "abc") == false
func isEmpty(string: String) -> Bool {
return string.isEmpty
}
// Return true if string is not empty
// isNotEmpty(string: "") == false
// isNotEmpty(string: "abc") == true
func isNotEmpty(string: String) -> Bool {
return !isEmpty(string: string)
}
// Return true if string is not empty and length is greater than 0
// isNotEmptyAndHasLength(string: "") == false
// isNotEmptyAndHasLength(string: "abc") == true
func isNotEmptyAndHasLength(string: String) -> Bool {
return !isEmpty(string: string) && strlen(string: string) > 0
}
// Return true if string is not empty and length is greater than or equal to 1
// isNotEmptyAndHasLengthOrEmpty(string: "") == true
// isNotEmptyAndHasLengthOrEmpty(string: "abc") == true
func isNotEmptyAndHasLengthOrEmpty(string: String) -> Bool {
return !isEmpty(string: string) && strlen(string: string) >= 1
}
// Return true if string is not empty and length is greater than or equal to 1
// isNotEmptyAndHasLengthOrEmpty(string: "") == true
// isNotEmptyAndHasLengthOrEmpty(string: "abc") == true
func isNotEmptyAndHasLengthOrEmpty(string: String) -> Bool {
return !isEmpty(string: string) && strlen(string: string) >= 1
}
// Return true if string is not empty and length is greater than or equal to 1
// isNotEmptyAndHasLengthOrEmpty(string: "") == true
// isNotEmptyAndHasLengthOrEmpty(string: "abc") == true
func isNotEmptyAndHasLengthOrEmpty(string: String) -> Bool {
return !isEmpty(string: string) && strlen(string: string) >= 1
}
// Return true if string is not empty and length is greater than or equal to 1
// isNotEmptyAndHasLengthOrEmpty(string: "") == true
// isNotEmptyAndHasLengthOrEmpty(string: "abc") == true
func isNotEmptyAndHasLengthOrEmpty(string: String) -> Bool {
return !isEmpty(string: string) && strlen(string: string) >= 1
}
// Return true if string is not empty and length is greater than or equal to 1
// isNotEmptyAndHasLengthOrEmpty(string: "") == true
// isNotEmptyAndHasLengthOrEmpty(string: "abc") == true
func isNotEmptyAndHasLengthOrEmpty(string: String) -> Bool {
return !isEmpty(string: string) && strlen(string: string) >= 1
}
// Return true if string is not empty and length is greater than or equal to 1
// isNotEmptyAndHasLengthOrEmpty(string: "") == true
// isNotEmptyAndHasLengthOrEmpty(string: "abc") == true
func isNotEmptyAndHasLengthOrEmpty(string: String) -> Bool {
return !isEmpty(string: string) && strlen(string: string) >= 1
}
// Return true if string is not empty and length is greater than or equal to 1
// isNotEmptyAndHasLengthOrEmpty(string: "") == true
// isNotEmptyAndHasLengthOrEmpty(string: "abc") == true
func isNotEmptyAndHasLengthOrEmpty(string: String) -> Bool {
return !isEmpty(string: string) && strlen(string: string)func strlen(string: String) -> Int {
return string.count
}
func reverse(string: String) -> String {
return String(string.reversed())
}
func isPalindrome(string: String) -> Bool {
return string == String(string.reversed())
}
func isEmpty(string: String) -> Bool {
return string.isEmpty
}
func isNotEmpty(string: String) -> Bool {
return !string.isEmpty
}
func isEqual(string1: String, string2: String) -> Bool {
return string1 == string2
}
func isNotEqual(string1: String, string2: String) -> Bool {
return string1 != string2
}
func contains(string: String, substring: String) -> Bool {
return string.contains(substring)
}
func doesNotContain(string: String, substring: String) -> Bool {
return !string.contains(substring)
}
func startsWith(string: String, prefix: String) -> Bool {
return string.hasPrefix(prefix)
}
func endsWith(string: String, suffix: String) -> Bool {
return string.hasSuffix(suffix)
}
func isAlphanumeric(string: String) -> Bool {
return string.range(of: "^[a-zA-Z0-9]+$", options: .regularExpression) != nil
}
func isAlphabetic(string: String) -> Bool {
return string.range(of: "^[a-zA-Z]+$", options: .regularExpression) != nil
}```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
return string.count
}
// Return reversed string
// reverse(string: "") == ""
// reverse(string: "abc") == "cba"
func reverse(string: String) -> String {
return String(string.reversed())
}
// Return true if string is palindrome
// isPalindrome(string: "") == true
// isPalindrome(string: "abc") == false
// isPalindrome(string: "aba") == true
func isPalindrome(string: String) -> Bool {
return string == String(string.reversed())
}
// Return true if string is empty
// isEmpty(string: "") == true
// isEmpty(string: "abc") == false
func isEmpty(string: String) -> Bool {
return string.isEmpty
}
// Return true if string is not empty
// isNotEmpty(string: "") == false
// isNotEmpty(string: "abc") == true
func isNotEmpty(string: String) -> Bool {
return !string.isEmpty
}
// Return true if string is equal to another string
// isEqual(string1: "abc", string2: "abc") == true
// isEqual(string1: "abc", string2: "cba") == false
func isEqual(string1: String, string2: String) -> Bool {
return string1 == string2
}
// Return true if string is not equal to another string
// isNotEqual(string1: "abc", string2: "abc") == false
// isNotEqual(string1: "abc", string2: "cba") == true
func isNotEqual(string1: String, string2: String) -> Bool {
return string1 != string2
}
// Return true if string contains another string
// contains(string: "abc", substring: "b") == true
// contains(string: "abc", substring: "d") == false
func contains(string: String, substring: String) -> Bool {
return string.contains(substring)
}
// Return true if string does not contain another string
// doesNotContain(string: "abc", substring: "b") == false
// doesNotContain(string: "abc", substring: "d") == true
func doesNotContain(string: String, substring: String) -> Bool {
return !string.contains(substring)
}
// Return true if string starts with another string
// startsWith(string: "abc", prefix: "a") == true
// startsWith(string: "abc", prefix: "b") == false
func startsWith(string: String, prefix: String) -> Bool {
return string.hasPrefix(prefix)
}
// Return true if string ends with another string
// endsWith(string: "abc", suffix: "c") == true
// endsWith(string: "abc", suffix: "b") == false
func endsWith(string: String, suffix: String) -> Bool {
return string.hasSuffix(suffix)
}
// Return true if string is alphanumeric
// isAlphanumeric(string: "abc") == true
// isAlphanumeric(string: "abc123") == true
// isAlphanumeric(string: "abc 123") == false
func isAlphanumeric(string: String) -> Bool {
return string.range(of: "^[a-zA-Z0-9]+$", options: .regularExpression) != nil
}
// Return true if string is alphabetic
// isAlphabetic(string: "abc") == true
// isAlphabetic(string: "abc123") == false
// isAlphabetic(string: "abc ABC") == false
func isAlphabetic(string: String) -> Bool {
return string.range(of: "^[a-zA-Z]+$", options: .regularExpression) != nil
}
// Return true if string is numeric
// isNumeric(string: "123") == true
// isNumeric(string: "abc") == false
// isNumeric(string: "123abc") == false
func isNumerfunc strlen(string: String) -> Int {
return string.count
}
func add(a: Int, b: Int) -> Int {
return a + b
}
func multiply(a: Int, b: Int) -> Int {
return a * b
}
func factorial(_ n: Int) -> Int {
if n == 0 {
return 1
} else {
return n * factorial(n - 1)
}
}
func fibonacci(_ n: Int) -> Int {
if n <= 1 {
return n
} else {
return fibonacci(n - 1) + fibonacci(n - 2)
}
}
func max(a: Int, b: Int) -> Int {
return a > b ? a : b
}
func min(a: Int, b: Int) -> Int {
return a < b ? a : b
}
func abs(a: Int) -> Int {
return a > 0 ? a : -a
}
func sqrt(_ n: Int) -> Int {
var x = n
var y = (x + 1) / 2
while y < x {
x = y
y = (x + n / x) / 2
}
return x
}
func power(base: Int, exponent: Int) -> Int {
var result = 1
for _ in 1...exponent {
result *= base
}
return result
}
func square(_ n: Int) -> Int {
return n * n
}
func cube(_ n: Int) -> Int {
return n * n * n
}
func sum(_ n: Int) -> Int {
var result = 0
for i in 1...n {
result += i
}
return result
}
func product(_ n: Int) -> Int {
var result = 1
for i in 1...n {
result *= i
}
return result
}
func sumEven(_ n: Int) -> Int {
var result = 0
for i in 2...n {
if i % 2 == 0 {
result += i
}
}
return result
}
func sumOdd(_ n: Int) -> Int {
var result = 0
for i in 1...n {
if i % 2 != 0 {
result += i
}
}
return result
}```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
return string.count
}
// Return the sum of two numbers
// add(a: 1, b: 2) == 3
func add(a: Int, b: Int) -> Int {
return a + b
}
// Return the product of two numbers
// multiply(a: 2, b: 3) == 6
func multiply(a: Int, b: Int) -> Int {
return a * b
}
// Return the factorial of a number
// factorial(n: 5) == 120
func factorial(_ n: Int) -> Int {
if n == 0 {
return 1
} else {
return n * factorial(n - 1)
}
}
// Return the nth Fibonacci number
// fibonacci(n: 5) == 5
func fibonacci(_ n: Int) -> Int {
if n <= 1 {
return n
} else {
return fibonacci(n - 1) + fibonacci(n - 2)
}
}
// Return the maximum of two numbers
// max(a: 5, b: 3) == 5
func max(a: Int, b: Int) -> Int {
return a > b ? a : b
}
// Return the minimum of two numbers
// min(a: 5, b: 3) == 3
func min(a: Int, b: Int) -> Int {
return a < b ? a : b
}
// Return the absolute value of a number
// abs(a: -5) == 5
func abs(a: Int) -> Int {
return a > 0 ? a : -a
}
// Return the square root of a number
// sqrt(n: 16) == 4
func sqrt(_ n: Int) -> Int {
var x = n
var y = (x + 1) / 2
while y < x {
x = y
y = (x + n / x) / 2
}
return x
}
// Return the power of a number
// power(base: 2, exponent: 3) == 8
func power(base: Int, exponent: Int) -> Int {
var result = 1
for _ in 1...exponent {
result *= base
}
return result
}
// Return the square of a number
// square(n: 4) == 16
func square(_ n: Int) -> Int {
return n * n
}
// Return the cube of a number
// cube(n: 2) == 8
func cube(_ n: Int) -> Int {
return n * n * n
}
// Return the sum of all numbers from 1 to n
// sum(n: 5) == 15
func sum(_ n: Int) -> Int {
var result = 0
for i in 1...n {
result += i
}
return result
}
// Return the product of all numbers from 1 to n
// product(n: 5) == 120
func product(_ n: Int) -> Int {
var result = 1
for i in 1...n {
result *= i
}
return result
}
// Return the sum of all even numbers from 1 to n
// sumEven(n: 10) == 30
func sumEven(_ n: Int) -> Int {
var result = 0
for i in 2...n {
if i % 2 == 0 {
result += i
}
}
return result
}
// Return the sum of all odd numbers from 1 to n
// sumOdd(n: 10) == 25
func sumOdd(_ n: Int) -> Int {
var result = 0
for i in 1...n {
if i % 2 != 0 {
result += i
}
}
return result
}
// Return the sum of all prime numbers from 1 to n
// sumPrime(n: 10) == 17
func sumfunc strlen(string: String) -> Int {
return string.count
}
func reverse(string: String) -> String {
return String(string.reversed())
}
func isPalindrome(string: String) -> Bool {
return string == reverse(string: string)
}
func isEmpty(string: String) -> Bool {
return string.isEmpty
}
func isNotEmpty(string: String) -> Bool {
return !isEmpty(string: string)
}
func isNotEmptyAndPalindrome(string: String) -> Bool {
return isNotEmpty(string: string) && isPalindrome(string: string)
}```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
return string.count
}
// Return reversed string
// reverse(string: "") == ""
// reverse(string: "abc") == "cba"
func reverse(string: String) -> String {
return String(string.reversed())
}
// Return true if string is palindrome
// isPalindrome(string: "") == true
// isPalindrome(string: "abc") == false
// isPalindrome(string: "aba") == true
func isPalindrome(string: String) -> Bool {
return string == reverse(string: string)
}
// Return true if string is empty
// isEmpty(string: "") == true
// isEmpty(string: "abc") == false
func isEmpty(string: String) -> Bool {
return string.isEmpty
}
// Return true if string is not empty
// isNotEmpty(string: "") == false
// isNotEmpty(string: "abc") == true
func isNotEmpty(string: String) -> Bool {
return !isEmpty(string: string)
}
// Return true if string is not empty and is palindrome
// isNotEmptyAndPalindrome(string: "") == false
// isNotEmptyAndPalindrome(string: "abc") == false
// isNotEmptyAndPalindrome(string: "aba") == true
func isNotEmptyAndPalindrome(string: String) -> Bool {
return isNotEmpty(string: string) && isPalindrome(string: string)
}
``````func strlen(string: String) -> Int {
return string.count
}
func firstChar(string: String) -> String {
return String(string.first!)
}
func lastChar(string: String) -> String {
return String(string.last!)
}
func removeFirstChar(string: String) -> String {
return String(string.dropFirst())
}
func removeLastChar(string: String) -> String {
return String(string.dropLast())
}
func reverse(string: String) -> String {
return String(string.reversed())
}
func isPalindrome(string: String) -> Bool {
return string == reverse(string: string)
}
func titleCase(string: String) -> String {
return string.capitalized
}
func lowerCase(string: String) -> String {
return string.lowercased()
}
func upperCase(string: String) -> String {
return string.uppercased()
}
func asciiValues(string: String) -> String {
return string.map { String($0.asciiValue!) }.joined()
}
func unicodeScalars(string: String) -> String {
return string.map { String($0.unicodeScalars.first!) }.joined()
}```swift
// Return length of given string
// strlen(string: "") == 0
// strlen(string: "abc") == 3
func strlen(string: String) -> Int {
return string.count
}
// Return the first character of the given string
// firstChar(string: "") == ""
// firstChar(string: "abc") == "a"
func firstChar(string: String) -> String {
return String(string.first!)
}
// Return the last character of the given string
// lastChar(string: "") == ""
// lastChar(string: "abc") == "c"
func lastChar(string: String) -> String {
return String(string.last!)
}
// Return the given string without its first character
// removeFirstChar(string: "") == ""
// removeFirstChar(string: "abc") == "bc"
func removeFirstChar(string: String) -> String {
return String(string.dropFirst())
}
// Return the given string without its last character
// removeLastChar(string: "") == ""
// removeLastChar(string: "abc") == "ab"
func removeLastChar(string: String) -> String {
return String(string.dropLast())
}
// Return the given string reversed
// reverse(string: "") == ""
// reverse(string: "abc") == "cba"
func reverse(string: String) -> String {
return String(string.reversed())
}
// Return true if the given string is a palindrome, false otherwise
// isPalindrome(string: "") == true
// isPalindrome(string: "a") == true
// isPalindrome(string: "abc") == false
// isPalindrome(string: "aba") == true
func isPalindrome(string: String) -> Bool {
return string == reverse(string: string)
}
// Return the given string in title case (i.e., with the first character of each word capitalized)
// titleCase(string: "") == ""
// titleCase(string: "a") == "A"
// titleCase(string: "abc") == "Abc"
// titleCase(string: "a b c") == "A B C"
func titleCase(string: String) -> String {
return string.capitalized
}
// Return the given string in lower case
// lowerCase(string: "") == ""
// lowerCase(string: "A") == "a"
// lowerCase(string: "ABC") == "abc"
// lowerCase(string: "A B C") == "a b c"
func lowerCase(string: String) -> String {
return string.lowercased()
}
// Return the given string in upper case
// upperCase(string: "") == ""
// upperCase(string: "a") == "A"
// upperCase(string: "abc") == "ABC"
// upperCase(string: "a b c") == "A B C"
func upperCase(string: String) -> String {
return string.uppercased()
}
// Return the given string with all characters converted to their ASCII values
// asciiValues(string: "") == ""
// asciiValues(string: "a") == "97"
// asciiValues(string: "abc") == "979899"
func asciiValues(string: String) -> String {
return string.map { String($0.asciiValue!) }.joined()
}
// Return the given string with all characters converted to their Unicode scalars
// unicodeScalars(string: "") == ""
// unicodeScalars(string: "a") == "97"
// unicodeScalars(string: "abc") == "979899"
func unicodeScalars(string: String) -> String {
return string.map { String($0.unicodeScalars.first!) }.joined()
}
// Return the given string with all characters converted to their Unicode extended scalars
// unicodeExtendedScalars(string: "") == ""
// unicodeExtendedScalars(string: "a") == "61"
// unicodeExtendedScalars(string: "abc") == "616263"
func unicodeExtendedScalars(string: String) -> String {
return string.map { String($0.func largestDivisor(n: Int) -> Int {
for i in stride(from: n-1, through: 1, by: -1) {
if n % i == 0 {
return i
}
}
return 1
}```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 stride(from: n-1, through: 1, by: -1) {
if n % i == 0 {
return i
}
}
return 1
}
largestDivisor(n: 15)
``````func largestDivisor(n: Int) -> Int {
for i in stride(from: n-1, through: 1, by: -1) {
if n % i == 0 {
return i
}
}
return 1
}```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 stride(from: n-1, through: 1, by: -1) {
if n % i == 0 {
return i
}
}
return 1
}
largestDivisor(n: 15)
``````func largestDivisor(n: Int) -> Int {
var largestDivisor = 1
for i in 2...n {
if n % i == 0 {
largestDivisor = i
}
}
return largestDivisor
}```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 largestDivisor = 1
for i in 2...n {
if n % i == 0 {
largestDivisor = i
}
}
return largestDivisor
}
largestDivisor(n: 15)
`````` // XCTAssertTrue failedfunc largestDivisor(n: Int) -> Int {
for i in stride(from: n-1, through: 1, by: -1) {
if n % i == 0 {
return i
}
}
return -1
}```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 stride(from: n-1, through: 1, by: -1) {
if n % i == 0 {
return i
}
}
return -1
}
largestDivisor(n: 15)
``````func largestDivisor(n: Int) -> Int {
for i in stride(from: n-1, through: 1, by: -1) {
if n % i == 0 {
return i
}
}
return 1
}```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 stride(from: n-1, through: 1, by: -1) {
if n % i == 0 {
return i
}
}
return 1
}
largestDivisor(n: 15)
``````func largestDivisor(n: Int) -> Int {
for i in stride(from: n-1, through: 1, by: -1) {
if n % i == 0 {
return i
}
}
return 1
}```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 stride(from: n-1, through: 1, by: -1) {
if n % i == 0 {
return i
}
}
return 1
}
`````````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 stride(from: n-1, through: 1, by: -1) {
if n % i == 0 {
return i
}
}
return 1
}
largestDivisor(n: 15)
```func largestDivisor(n: Int) -> Int {
for i in stride(from: n-1, through: 1, by: -1) {
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 stride(from: n-1, through: 1, by: -1) {
if n % i == 0 {
return i
}
}
return 0
}
largestDivisor(n: 15)
``````func largestDivisor(n: Int) -> Int {
for i in stride(from: n-1, through: 1, by: -1) {
if n % i == 0 {
return i
}
}
return -1
}```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 stride(from: n-1, through: 1, by: -1) {
if n % i == 0 {
return i
}
}
return -1
}
largestDivisor(n: 15)
``````func largestDivisor(n: Int) -> Int {
for i in stride(from: n-1, through: 1, by: -1) {
if n % i == 0 {
return i
}
}
return 1
}```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 stride(from: n-1, through: 1, by: -1) {
if n % i == 0 {
return i
}
}
return 1
}
`````````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 stride(from: n-1, through: 1, by: -1) {
if n % i == 0 {
return i
}
}
return 1
}
largestDivisor(n: 15)
```func largestDivisor(n: Int) -> Int {
var largestDivisor = 1
for i in 2...n {
if n % i == 0 {
largestDivisor = i
}
}
return largestDivisor
}```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 largestDivisor = 1
for i in 2...n {
if n % i == 0 {
largestDivisor = i
}
}
return largestDivisor
}
largestDivisor(n: 15)
`````` // XCTAssertTrue failedfunc factorize(n: Int) -> [Int] {
var result = [Int]()
var number = n
var divisor = 2
while number > 1 {
while number % divisor == 0 {
result.append(divisor)
number /= divisor
}
divisor += 1
}
return result
}```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 result = [Int]()
var number = n
var divisor = 2
while number > 1 {
while number % divisor == 0 {
result.append(divisor)
number /= divisor
}
divisor += 1
}
return result
}
print(factorize(n: 8))
print(factorize(n: 25))
print(factorize(n: 70))
``````
```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 result = [Int]()
var number = n
var divisor = 2
while number > 1 {
while number % divisor == 0 {
result.append(divisor)
number /= divisor
}
divisor += 1
}
return result
}
print(factorize(n: 8))
print(factorize(n: 25))
print(factorize(n: 70))
```func factorize(n: Int) -> [Int] {
var result = [Int]()
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}```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 result = [Int]()
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
// Test cases
print(factorize(n: 8)) // [2, 2, 2]
print(factorize(n: 25)) // [5, 5]
print(factorize(n: 70)) // [2, 5, 7]
``````
```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 result = [Int]()
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
// Test cases
print(factorize(n: 8)) // [2, 2, 2]
print(factorize(n: 25)) // [5, 5]
print(factorize(n: 70)) // [2, 5, 7]
```func factorize(n: Int) -> [Int] {
var result = [Int]()
var number = n
var divisor = 2
while number > 1 {
while number % divisor == 0 {
result.append(divisor)
number /= divisor
}
divisor += 1
}
return result
}```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 result = [Int]()
var number = n
var divisor = 2
while number > 1 {
while number % divisor == 0 {
result.append(divisor)
number /= divisor
}
divisor += 1
}
return result
}
factorize(n: 8)
``````func factorize(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func factorize2(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func factorize3(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func factorize4(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func factorize5(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func factorize6(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func factorize7(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func factorize8(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func factorize9(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}```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 result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func factorize2(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func factorize3(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func factorize4(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func factorize5(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func factorize6(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func factorize7(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func factorize8(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func factorize9(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func factorize10(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if numfunc factorize(n: Int) -> [Int] {
var result = [Int]()
var number = n
var divisor = 2
while number > 1 {
while number % divisor == 0 {
result.append(divisor)
number /= divisor
}
divisor += 1
}
return result
}```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 result = [Int]()
var number = n
var divisor = 2
while number > 1 {
while number % divisor == 0 {
result.append(divisor)
number /= divisor
}
divisor += 1
}
return result
}
factorize(n: 8)
``````
```swift
// [2, 2, 2]
```func factorize(n: Int) -> [Int] {
var result = [Int]()
var num = n
var i = 2
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func testFactorize() {
print(factorize(n: 8)) // [2, 2, 2]
print(factorize(n: 25)) // [5, 5]
print(factorize(n: 70)) // [2, 5, 7]
}```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 result = [Int]()
var num = n
var i = 2
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func testFactorize() {
print(factorize(n: 8)) // [2, 2, 2]
print(factorize(n: 25)) // [5, 5]
print(factorize(n: 70)) // [2, 5, 7]
}
testFactorize()
``````func factorize(n: Int) -> [Int] {
var result = [Int]()
var number = n
var i = 2
while i * i <= number {
while number % i == 0 {
result.append(i)
number /= i
}
i += 1
}
if number > 1 {
result.append(number)
}
return result
}
func primeFactors(n: Int) -> [Int] {
var factors = [Int]()
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
factors.append(i)
num /= i
}
i += 1
}
if num > 1 {
factors.append(num)
}
return factors
}
func primeFactorsCount(n: Int) -> [Int: Int] {
var count = [Int: Int]()
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount2(n: Int) -> [Int: Int] {
var count = [Int: Int]()
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount3(n: Int) -> [Int: Int] {
var count = [Int: Int]()
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount4(n: Int) -> [Int: Int] {
var count = [Int: Int]()
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount5(n: Int) -> [Int: Int] {
var count = [Int: Int]()
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount6(n: Int) -> [Int: Int] {
var count = [Int: Int]()
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}```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 result = [Int]()
var number = n
var i = 2
while i * i <= number {
while number % i == 0 {
result.append(i)
number /= i
}
i += 1
}
if number > 1 {
result.append(number)
}
return result
}
func primeFactors(n: Int) -> [Int] {
var factors = [Int]()
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
factors.append(i)
num /= i
}
i += 1
}
if num > 1 {
factors.append(num)
}
return factors
}
func primeFactorsCount(n: Int) -> [Int: Int] {
var count = [Int: Int]()
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount2(n: Int) -> [Int: Int] {
var count = [Int: Int]()
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount3(n: Int) -> [Int: Int] {
var count = [Int: Int]()
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount4(n: Int) -> [Int: Int] {
var count = [Int: Int]()
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount5(n: Int) -> [Int: Int] {
var count = [Int: Int]()
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount6(n: Int) -> [Int: Int] {
var count = [Int: Int]()
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount7(n: Int) -> [Int: Int] {
var count = [Int: Int]()
func factorize(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func primeFactors(n: Int) -> [Int] {
var factors: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
factors.append(i)
num /= i
}
i += 1
}
if num > 1 {
factors.append(num)
}
return factors
}
func primeFactorsCount(n: Int) -> [Int: Int] {
var count: [Int: Int] = [:]
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount2(n: Int) -> [Int: Int] {
var count: [Int: Int] = [:]
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount3(n: Int) -> [Int: Int] {
var count: [Int: Int] = [:]
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount4(n: Int) -> [Int: Int] {
var count: [Int: Int] = [:]
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount5(n: Int) -> [Int: Int] {
var count: [Int: Int] = [:]
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount6(n: Int) -> [Int: Int] {
var count: [Int: Int] = [:]
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}```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 result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
func primeFactors(n: Int) -> [Int] {
var factors: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
factors.append(i)
num /= i
}
i += 1
}
if num > 1 {
factors.append(num)
}
return factors
}
func primeFactorsCount(n: Int) -> [Int: Int] {
var count: [Int: Int] = [:]
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount2(n: Int) -> [Int: Int] {
var count: [Int: Int] = [:]
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount3(n: Int) -> [Int: Int] {
var count: [Int: Int] = [:]
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount4(n: Int) -> [Int: Int] {
var count: [Int: Int] = [:]
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount5(n: Int) -> [Int: Int] {
var count: [Int: Int] = [:]
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount6(n: Int) -> [Int: Int] {
var count: [Int: Int] = [:]
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
count[i] = (count[i] ?? 0) + 1
num /= i
}
i += 1
}
if num > 1 {
count[num] = (count[num] ?? 0) + 1
}
return count
}
func primeFactorsCount7(n: Int) -> [Int: Int]func factorize(n: Int) -> [Int] {
var result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}```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 result: [Int] = []
var i = 2
var num = n
while i * i <= num {
while num % i == 0 {
result.append(i)
num /= i
}
i += 1
}
if num > 1 {
result.append(num)
}
return result
}
``````
```swift
// Test cases
print(factorize(n: 8)) // [2, 2, 2]
print(factorize(n: 25)) // [5, 5]
print(factorize(n: 70)) // [2, 5, 7]
```func factorize(n: Int) -> [Int] {
var result = [Int]()
var number = n
var factor = 2
while number > 1 {
while number % factor == 0 {
result.append(factor)
number /= factor
}
factor += 1
}
return result
}```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 result = [Int]()
var number = n
var factor = 2
while number > 1 {
while number % factor == 0 {
result.append(factor)
number /= factor
}
factor += 1
}
return result
}
``````
```swift
factorize(n: 8) // [2, 2, 2]
factorize(n: 25) // [5, 5]
factorize(n: 70) // [2, 5, 7]
```func removeDuplicates(numbers: [Int]) -> [Int] {
var counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
}
}
for num in numbers {
if counts[num] == 1 {
result.append(num)
}
}
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 counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
}
}
for num in numbers {
if counts[num] == 1 {
result.append(num)
}
}
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 counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
}
}
for num in numbers {
if counts[num] == 1 {
result.append(num)
}
}
return result
}
removeDuplicates(numbers: [1, 2, 3, 2, 4])
```func removeDuplicates(numbers: [Int]) -> [Int] {
var counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
}
}
for num in numbers {
if counts[num] == 1 {
result.append(num)
}
}
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 counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
}
}
for num in numbers {
if counts[num] == 1 {
result.append(num)
}
}
return result
}
`````````swift
func removeDuplicates(numbers: [Int]) -> [Int] {
var counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
}
}
for num in numbers {
if counts[num] == 1 {
result.append(num)
}
}
return result
}
removeDuplicates(numbers: [1, 2, 3, 2, 4])
```func removeDuplicates(numbers: [Int]) -> [Int] {
var counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
}
}
for num in numbers {
if counts[num] == 1 {
result.append(num)
}
}
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 counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
}
}
for num in numbers {
if counts[num] == 1 {
result.append(num)
}
}
return result
}
`````````python
def remove_duplicates(numbers):
counts = {}
result = []
for num in numbers:
if num in counts:
counts[num] += 1
else:
counts[num] = 1
for num in numbers:
if counts[num] == 1:
result.append(num)
return result
```func removeDuplicates(numbers: [Int]) -> [Int] {
var counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
}
}
for num in numbers {
if counts[num] == 1 {
result.append(num)
}
}
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 counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
}
}
for num in numbers {
if counts[num] == 1 {
result.append(num)
}
}
return result
}
``````
```swift
func removeDuplicates(numbers: [Int]) -> [Int] {
var counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
}
}
for num in numbers {
if counts[num] == 1 {
result.append(num)
}
}
return result
}
removeDuplicates(numbers: [1, 2, 3, 2, 4])
```func removeDuplicates(numbers: [Int]) -> [Int] {
var counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
result.append(num)
}
}
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 counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
result.append(num)
}
}
return result
}
``````
```swift
func removeDuplicates(numbers: [Int]) -> [Int] {
var counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
result.append(num)
}
}
return result
}
removeDuplicates(numbers: [1, 2, 3, 2, 4])
``` // XCTAssertTrue failedfunc removeDuplicates(numbers: [Int]) -> [Int] {
var counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
result.append(num)
}
}
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 counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
result.append(num)
}
}
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 counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
result.append(num)
}
}
return result
}
removeDuplicates(numbers: [1, 2, 3, 2, 4])
``` // XCTAssertTrue failedfunc removeDuplicates(numbers: [Int]) -> [Int] {
var counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
result.append(num)
}
}
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 counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
result.append(num)
}
}
return result
}
``````
```swift
func removeDuplicates(numbers: [Int]) -> [Int] {
var counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
result.append(num)
}
}
return result
}
removeDuplicates(numbers: [1, 2, 3, 2, 4])
``` // XCTAssertTrue failedfunc removeDuplicates(numbers: [Int]) -> [Int] {
var counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
result.append(num)
}
}
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 counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
result.append(num)
}
}
return result
}
``````
```python
# 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([1, 2, 3, 2, 4]) == [1, 3, 4]
def removeDuplicates(numbers):
counts = {}
result = []
for num in numbers:
if num in counts:
counts[num] += 1
else:
counts[num] = 1
result.append(num)
return result
```
```python
# Test the removeDuplicates function
print(removeDuplicates([1, 2, 3, 2, 4]))
``` // XCTAssertTrue failedfunc removeDuplicates(numbers: [Int]) -> [Int] {
var counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
}
}
for num in numbers {
if counts[num] == 1 {
result.append(num)
}
}
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 counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
}
}
for num in numbers {
if counts[num] == 1 {
result.append(num)
}
}
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 counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
}
}
for num in numbers {
if counts[num] == 1 {
result.append(num)
}
}
return result
}
removeDuplicates(numbers: [1, 2, 3, 2, 4])
```func removeDuplicates(numbers: [Int]) -> [Int] {
var counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
result.append(num)
}
}
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 counts = [Int: Int]()
var result = [Int]()
for num in numbers {
if let count = counts[num] {
counts[num] = count + 1
} else {
counts[num] = 1
result.append(num)
}
}
return result
}
``````
```python
def remove_duplicates(numbers):
counts = {}
result = []
for num in numbers:
if num in counts:
counts[num] += 1
else:
counts[num] = 1
result.append(num)
return result
remove_duplicates([1, 2, 3, 2, 4])
``` // XCTAssertTrue failedfunc flipCase(string: String) -> String {
var result = ""
for char in string {
if char.isUppercase {
result += char.lowercased()
} else if char.isLowercase {
result += char.uppercased()
} else {
result += 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 += char.lowercased()
} else if char.isLowercase {
result += char.uppercased()
} else {
result += char
}
}
return result
}
flipCase(string: "Hello")
``````result += char // cannot convert value of type 'Character' to expected argument type 'String'func flipCase(string: String) -> String {
var result = ""
for char in string {
if char.isUppercase {
result += char.lowercased()
} else if char.isLowercase {
result += char.uppercased()
} else {
result += 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 += char.lowercased()
} else if char.isLowercase {
result += char.uppercased()
} else {
result += 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 += char.lowercased()
} else if char.isLowercase {
result += char.uppercased()
} else {
result += char
}
}
return result
}
flipCase(string: "Hello")
```result += char // cannot convert value of type 'Character' to expected argument type 'String'func flipCase(string: String) -> String {
var result = ""
for char in string {
if char.isUppercase {
result += char.lowercased()
} else {
result += 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 += char.lowercased()
} else {
result += char.uppercased()
}
}
return result
}
flipCase(string: "Hello")
``````func flipCase(string: String) -> String {
var result = ""
for char in string {
if char.isUppercase {
result += char.lowercased()
} else {
result += 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 += char.lowercased()
} else {
result += char.uppercased()
}
}
return result
}
flipCase(string: "Hello")
``````func flipCase(string: String) -> String {
var result = ""
for char in string {
if char.isUppercase {
result += char.lowercased()
} else {
result += 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 += char.lowercased()
} else {
result += char.uppercased()
}
}
return result
}
flipCase(string: "Hello")
``````func flipCase(string: String) -> String {
var result = ""
for char in string {
if char.isUppercase {
result += char.lowercased()
} else if char.isLowercase {
result += char.uppercased()
} else {
result += 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 += char.lowercased()
} else if char.isLowercase {
result += char.uppercased()
} else {
result += char
}
}
return result
}
flipCase(string: "Hello")
``````result += char // cannot convert value of type 'Character' to expected argument type 'String'func flipCase(string: String) -> String {
var result = ""
for char in string {
if char.isUppercase {
result += char.lowercased()
} else if char.isLowercase {
result += char.uppercased()
} else {
result += 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 += char.lowercased()
} else if char.isLowercase {
result += char.uppercased()
} else {
result += char
}
}
return result
}
flipCase(string: "Hello")
``````result += char // cannot convert value of type 'Character' to expected argument type 'String'func flipCase(string: String) -> String {
var result = ""
for char in string {
if char.isUppercase {
result += char.lowercased()
} else if char.isLowercase {
result += char.uppercased()
} else {
result += 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 += char.lowercased()
} else if char.isLowercase {
result += char.uppercased()
} else {
result += char
}
}
return result
}
flipCase(string: "Hello")
``````result += char // cannot convert value of type 'Character' to expected argument type 'String'func flipCase(string: String) -> String {
var result = ""
for char in string {
if char.isUppercase {
result += char.lowercased()
} else {
result += 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 += char.lowercased()
} else {
result += char.uppercased()
}
}
return result
}
flipCase(string: "Hello")
``````func flipCase(string: String) -> String {
var result = ""
for char in string {
if char.isUppercase {
result += char.lowercased()
} else {
result += 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 += char.lowercased()
} else {
result += char.uppercased()
}
}
return result
}
flipCase(string: "Hello")
``````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
}
// Test cases
print(concatenate(strings: [])) // ""
print(concatenate(strings: ["a", "b", "c"])) // "abc"
`````````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
}
// Test cases
print(concatenate(strings: [])) // ""
print(concatenate(strings: ["a", "b", "c"])) // "abc"
```func concatenate(strings: [String]) -> String {
return strings.joined()
}
func longestLength(strings: [String]) -> Int {
return strings.map { $0.count }.max() ?? 0
}
func shortestLength(strings: [String]) -> Int {
return strings.map { $0.count }.min() ?? 0
}
func averageLength(strings: [String]) -> Double {
let totalLength = strings.reduce(0) { $0 + $1.count }
return Double(totalLength) / Double(strings.count)
}
func findLongestString(strings: [String]) -> String {
return strings.max { $0.count < $1.count } ?? ""
}
func findShortestString(strings: [String]) -> String {
return strings.min { $0.count < $1.count } ?? ""
}
func findStringWithMostVowels(strings: [String]) -> String {
return strings.max { countVowels($0) < countVowels($1) } ?? ""
}
func countVowels(string: String) -> Int {
let vowels = Set("aeiou")
return string.lowercased().filter { vowels.contains($0) }.count
}```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()
}
// Find the length of the longest string in an array
// longestLength(strings: [] as [String]) == 0
// longestLength(strings: ["a", "bb", "ccc"]) == 3
func longestLength(strings: [String]) -> Int {
return strings.map { $0.count }.max() ?? 0
}
// Find the length of the shortest string in an array
// shortestLength(strings: [] as [String]) == 0
// shortestLength(strings: ["a", "bb", "ccc"]) == 1
func shortestLength(strings: [String]) -> Int {
return strings.map { $0.count }.min() ?? 0
}
// Find the average length of strings in an array
// averageLength(strings: [] as [String]) == 0.0
// averageLength(strings: ["a", "bb", "ccc"]) == 2.0
func averageLength(strings: [String]) -> Double {
let totalLength = strings.reduce(0) { $0 + $1.count }
return Double(totalLength) / Double(strings.count)
}
// Find the string with the most characters
// findLongestString(strings: [] as [String]) == ""
// findLongestString(strings: ["a", "bb", "ccc"]) == "ccc"
func findLongestString(strings: [String]) -> String {
return strings.max { $0.count < $1.count } ?? ""
}
// Find the string with the fewest characters
// findShortestString(strings: [] as [String]) == ""
// findShortestString(strings: ["a", "bb", "ccc"]) == "a"
func findShortestString(strings: [String]) -> String {
return strings.min { $0.count < $1.count } ?? ""
}
// Find the string with the most vowels
// findStringWithMostVowels(strings: [] as [String]) == ""
// findStringWithMostVowels(strings: ["a", "bb", "ccc"]) == "a"
func findStringWithMostVowels(strings: [String]) -> String {
return strings.max { countVowels($0) < countVowels($1) } ?? ""
}
// Count the number of vowels in a string
// countVowels(string: "") == 0
// countVowels(string: "hello") == 2
func countVowels(string: String) -> Int {
let vowels = Set("aeiou")
return string.lowercased().filter { vowels.contains($0) }.count
}
``````return strings.max { countVowels($0) < countVowels($1) } ?? "" // missing argument label 'string:' in callreturn strings.max { countVowels($0) < countVowels($1) } ?? "" // missing argument label 'string:' in callfunc concatenate(strings: [String]) -> String {
return strings.joined()
}
func concatenateWithSeparator(strings: [String], separator: String) -> String {
return strings.joined(separator: separator)
}
func concatenateWithSeparatorAndLimit(strings: [String], separator: String, limit: Int) -> String {
return strings.prefix(limit).joined(separator: separator)
}```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()
}
// Concatenate array of strings into a single string with a separator
// concatenateWithSeparator(strings: [] as [String], separator: " ") == ""
// concatenateWithSeparator(strings: ["a", "b", "c"], separator: "-") == "a-b-c"
func concatenateWithSeparator(strings: [String], separator: String) -> String {
return strings.joined(separator: separator)
}
// Concatenate array of strings into a single string with a separator and a limit
// concatenateWithSeparatorAndLimit(strings: [] as [String], separator: " ", limit: 0) == ""
// concatenateWithSeparatorAndLimit(strings: ["a", "b", "c"], separator: "-", limit: 2) == "a-b"
func concatenateWithSeparatorAndLimit(strings: [String], separator: String, limit: Int) -> String {
return strings.prefix(limit).joined(separator: separator)
}
`````````swift
// Test cases
let strings1 = ["a", "b", "c"]
let result1 = concatenate(strings: strings1)
print(result1) // Output: "abc"
let strings2 = ["a", "b", "c"]
let result2 = concatenateWithSeparator(strings: strings2, separator: "-")
print(result2) // Output: "a-b-c"
let strings3 = ["a", "b", "c"]
let result3 = concatenateWithSeparatorAndLimit(strings: strings3, separator: "-", limit: 2)
print(result3) // Output: "a-b"
```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
}
// Test cases
print(concatenate(strings: [])) // ""
print(concatenate(strings: ["a", "b", "c"])) // "abc"
`````````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
}
// Test cases
print(concatenate(strings: [])) // ""
print(concatenate(strings: ["a", "b", "c"])) // "abc"
```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
}
// Test cases
print(concatenate(strings: [])) // ""
print(concatenate(strings: ["a", "b", "c"])) // "abc"
``````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
}
// Test cases
print(concatenate(strings: [])) // ""
print(concatenate(strings: ["a", "b", "c"])) // "abc"
``````func concatenate(strings: [String]) -> String {
return strings.joined()
}
func concatenateWithSeparator(strings: [String], separator: String) -> String {
return strings.joined(separator: separator)
}
func concatenateWithSeparatorAndLimit(strings: [String], separator: String, limit: Int) -> String {
return strings.prefix(limit).joined(separator: separator)
}```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()
}
// Concatenate array of strings into a single string with a separator
// concatenateWithSeparator(strings: [] as [String], separator: " ") == ""
// concatenateWithSeparator(strings: ["a", "b", "c"], separator: "-") == "a-b-c"
func concatenateWithSeparator(strings: [String], separator: String) -> String {
return strings.joined(separator: separator)
}
// Concatenate array of strings into a single string with a separator and a limit
// concatenateWithSeparatorAndLimit(strings: [] as [String], separator: " ", limit: 0) == ""
// concatenateWithSeparatorAndLimit(strings: ["a", "b", "c"], separator: "-", limit: 2) == "a-b"
func concatenateWithSeparatorAndLimit(strings: [String], separator: String, limit: Int) -> String {
return strings.prefix(limit).joined(separator: separator)
}
`````````swift
// Test cases
let strings1 = ["a", "b", "c"]
let result1 = concatenate(strings: strings1)
print(result1) // Output: "abc"
let strings2 = ["a", "b", "c"]
let result2 = concatenateWithSeparator(strings: strings2, separator: "-")
print(result2) // Output: "a-b-c"
let strings3 = ["a", "b", "c"]
let result3 = concatenateWithSeparatorAndLimit(strings: strings3, separator: "-", limit: 2)
print(result3) // Output: "a-b"
```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
}
// Test cases
print(concatenate(strings: [])) // ""
print(concatenate(strings: ["a", "b", "c"])) // "abc"
``````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
}
// Test cases
print(concatenate(strings: [])) // ""
print(concatenate(strings: ["a", "b", "c"])) // "abc"
`````````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
}
// Test cases
print(concatenate(strings: [])) // ""
print(concatenate(strings: ["a", "b", "c"])) // "abc"
```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
}
// Test cases
print(concatenate(strings: [])) // ""
print(concatenate(strings: ["a", "b", "c"])) // "abc"
``````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) }
}
// Test cases
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a"))
`````````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) }
}
// Test cases
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a"))
```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) }
}
// Test cases
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a"))
`````````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) }
}
// Test cases
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a"))
```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) }
}
// Test cases
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a"))
`````````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) }
}
// Test cases
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a"))
```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) }
}
`````````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) }
}
```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) }
}
`````````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) }
}
```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) }
}
// Testing
let strings = ["abc", "bcd", "cde", "array"]
let prefix = "a"
let result = filterByPrefix(strings: strings, prefix: prefix)
print(result)
`````````python
# Filter an input array of strings only for ones that start with a given prefix.
# filter_by_prefix(["abc", "bcd", "cde", "array"], "a") == ["abc", "array"]
def filter_by_prefix(strings, prefix):
return [s for s in strings if s.startswith(prefix)]
# Testing
strings = ["abc", "bcd", "cde", "array"]
prefix = "a"
result = filter_by_prefix(strings, prefix)
print(result)
```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) }
}
// Test cases
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a"))
`````````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) }
}
// Test cases
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a"))
```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) }
}
// Test cases
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a"))
`````````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) }
}
// Test cases
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a"))
```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) }
}
// Test cases
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "b"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "c"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "d"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "e"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "f"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "g"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "h"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "i"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "j"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "k"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "l"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "m"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "n"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "o"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "p"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "q"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "r"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "s"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "t"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "u"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "v"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "w"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "x"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "y"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "z"))
`````````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) }
}
// Test cases
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "a"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "b"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "c"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "d"))
print(filterByPrefix(strings: ["abc", "bcd", "cde", "array"], prefix: "e"))
print(filterByPrefix(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) }
}
`````````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) }
}
```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 }
}
`````````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 }
}
```
```python
def getPositive(l):
return [i for i in l if i > 0]
print(getPositive([-1, 2, -4, 5, 6]))
print(getPositive([5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]))
```func getPositive(l: [Int]) -> [Int] {
var positiveNumbers = [Int]()
for number in l {
if number > 0 {
positiveNumbers.append(number)
}
}
return positiveNumbers
}```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 positiveNumbers = [Int]()
for number in l {
if number > 0 {
positiveNumbers.append(number)
}
}
return positiveNumbers
}
``````
```swift
// Test the function
let numbers = [-1, 2, -4, 5, 6]
let positiveNumbers = getPositive(l: numbers)
print(positiveNumbers)
```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 }
}
`````````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 }
}
```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 }
}
`````````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 }
}
```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 }
}
`````````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 }
}
```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 }
}
`````````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 }
}
```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 }
}
`````````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 }
}
```func getPositive(l: [Int]) -> [Int] {
var positiveNumbers = [Int]()
for num in l {
if num > 0 {
positiveNumbers.append(num)
}
}
return positiveNumbers
}```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 positiveNumbers = [Int]()
for num in l {
if num > 0 {
positiveNumbers.append(num)
}
}
return positiveNumbers
}
`````````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 positiveNumbers = [Int]()
for num in l {
if num > 0 {
positiveNumbers.append(num)
}
}
return positiveNumbers
}
```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 }
}
`````````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 }
}
```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 }
}
`````````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 }
}
```func isPrime(n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
```func isPrime(n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
```func isPrime(n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
```func isPrime(n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
```func isPrime(n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
```func isPrime(n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
```func isPrime(n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
`````````python
def is_prime(n):
if n <= 1:
return False
if n <= 3:
return True
if n % 2 == 0 or n % 3 == 0:
return False
i = 5
while i * i <= n:
if n % i == 0 or n % (i + 2) == 0:
return False
i += 6
return True
print(is_prime(6))
print(is_prime(101))
print(is_prime(11))
print(is_prime(13441))
print(is_prime(61))
print(is_prime(4))
print(is_prime(1))
```func isPrime(n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
```func isPrime(n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
```func isPrime(n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
`````````python
# 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
def isPrime(n: int) -> bool:
if n <= 1:
return False
if n <= 3:
return True
if n % 2 == 0 or n % 3 == 0:
return False
i = 5
while i * i <= n:
if n % i == 0 or n % (i + 2) == 0:
return False
i += 6
return True
```func sortThird(l: [Int]) -> [Int] {
var result = l
let sortedThirdElements = l.indices.filter { $0 % 3 == 0 }.map { l[$0] }.sorted()
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sortedThirdElements.removeFirst()
}
}
return result
}```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 result = l
let sortedThirdElements = l.indices.filter { $0 % 3 == 0 }.map { l[$0] }.sorted()
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sortedThirdElements.removeFirst()
}
}
return result
}
`````````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 result = l
let sortedThirdElements = l.indices.filter { $0 % 3 == 0 }.map { l[$0] }.sorted()
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sortedThirdElements.removeFirst()
}
}
return result
}
sortThird(l: [1, 2, 3])
```result[index] = sortedThirdElements.removeFirst() // cannot use mutating member on immutable value: 'sortedThirdElements' is a 'let' constantfunc sortThird(l: [Int]) -> [Int] {
var result = l
let sortedThirdElements = l.indices.filter { $0 % 3 == 0 }.map { l[$0] }.sorted()
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sortedThirdElements.removeFirst()
}
}
return result
}```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 result = l
let sortedThirdElements = l.indices.filter { $0 % 3 == 0 }.map { l[$0] }.sorted()
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sortedThirdElements.removeFirst()
}
}
return result
}
`````````python
def sort_third(l):
result = l.copy()
sorted_third_elements = sorted(value for index, value in enumerate(l) if index % 3 == 0)
for index, value in enumerate(l):
if index % 3 == 0:
result[index] = sorted_third_elements.pop(0)
return result
print(sort_third([1, 2, 3]))
print(sort_third([5, 6, 3, 4, 8, 9, 2]))
```result[index] = sortedThirdElements.removeFirst() // cannot use mutating member on immutable value: 'sortedThirdElements' is a 'let' constantfunc sortThird(l: [Int]) -> [Int] {
var result = l
let sortedThirdElements = l.indices.filter { $0 % 3 == 0 }.map { l[$0] }.sorted()
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sortedThirdElements.removeFirst()
}
}
return result
}```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 result = l
let sortedThirdElements = l.indices.filter { $0 % 3 == 0 }.map { l[$0] }.sorted()
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sortedThirdElements.removeFirst()
}
}
return result
}
`````````python
def sort_third(l):
result = l.copy()
sorted_third_elements = sorted(value for index, value in enumerate(l) if index % 3 == 0)
for index, value in enumerate(l):
if index % 3 == 0:
result[index] = sorted_third_elements.pop(0)
return result
print(sort_third([1, 2, 3]))
print(sort_third([5, 6, 3, 4, 8, 9, 2]))
```result[index] = sortedThirdElements.removeFirst() // cannot use mutating member on immutable value: 'sortedThirdElements' is a 'let' constantfunc sortThird(l: [Int]) -> [Int] {
var result = l
let sortedThirdElements = l.indices.filter { $0 % 3 == 0 }.map { l[$0] }.sorted()
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sortedThirdElements.removeFirst()
}
}
return result
}```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 result = l
let sortedThirdElements = l.indices.filter { $0 % 3 == 0 }.map { l[$0] }.sorted()
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sortedThirdElements.removeFirst()
}
}
return result
}
`````````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 result = l
let sortedThirdElements = l.indices.filter { $0 % 3 == 0 }.map { l[$0] }.sorted()
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sortedThirdElements.removeFirst()
}
}
return result
}
sortThird(l: [1, 2, 3])
```result[index] = sortedThirdElements.removeFirst() // cannot use mutating member on immutable value: 'sortedThirdElements' is a 'let' constantfunc sortThird(l: [Int]) -> [Int] {
var result = l
let sortedThirdElements = l.indices.filter { $0 % 3 == 0 }.map { l[$0] }.sorted()
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sortedThirdElements.removeFirst()
}
}
return result
}```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 result = l
let sortedThirdElements = l.indices.filter { $0 % 3 == 0 }.map { l[$0] }.sorted()
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sortedThirdElements.removeFirst()
}
}
return result
}
`````````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 result = l
let sortedThirdElements = l.indices.filter { $0 % 3 == 0 }.map { l[$0] }.sorted()
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sortedThirdElements.removeFirst()
}
}
return result
}
sortThird(l: [1, 2, 3])
```result[index] = sortedThirdElements.removeFirst() // cannot use mutating member on immutable value: 'sortedThirdElements' is a 'let' constantfunc sortThird(l: [Int]) -> [Int] {
let sorted = l.filter { $0 % 3 == 0 }.sorted()
var result = l
for (i, v) in l.enumerated() {
if i % 3 == 0 {
result[i] = sorted.removeFirst()
}
}
return result
}```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] {
let sorted = l.filter { $0 % 3 == 0 }.sorted()
var result = l
for (i, v) in l.enumerated() {
if i % 3 == 0 {
result[i] = sorted.removeFirst()
}
}
return result
}
`````````python
def sort_third(l):
sorted_l = sorted(i for i in l if i % 3 == 0)
result = []
for i in range(len(l)):
if i % 3 == 0:
result.append(sorted_l.pop(0))
else:
result.append(l[i])
return result
print(sort_third([1, 2, 3]))
print(sort_third([5, 6, 3, 4, 8, 9, 2]))
```result[i] = sorted.removeFirst() // cannot use mutating member on immutable value: 'sorted' is a 'let' constantfunc sortThird(l: [Int]) -> [Int] {
var result = l
let sortedThirdElements = l.indices.filter { $0 % 3 == 0 }.map { l[$0] }.sorted()
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sortedThirdElements.removeFirst()
}
}
return result
}```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 result = l
let sortedThirdElements = l.indices.filter { $0 % 3 == 0 }.map { l[$0] }.sorted()
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sortedThirdElements.removeFirst()
}
}
return result
}
sortThird(l: [5, 6, 3, 4, 8, 9, 2])
`````````python
def sort_third(l):
result = l.copy()
sorted_third_elements = sorted(l[i] for i in range(len(l)) if i % 3 == 0)
for i in range(len(l)):
if i % 3 == 0:
result[i] = sorted_third_elements.pop(0)
return result
sort_third([5, 6, 3, 4, 8, 9, 2])
```result[index] = sortedThirdElements.removeFirst() // cannot use mutating member on immutable value: 'sortedThirdElements' is a 'let' constantfunc sortThird(l: [Int]) -> [Int] {
var result = l
let sortedThirdElements = l.indices.filter { $0 % 3 == 0 }.map { l[$0] }.sorted()
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sortedThirdElements.removeFirst()
}
}
return result
}```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 result = l
let sortedThirdElements = l.indices.filter { $0 % 3 == 0 }.map { l[$0] }.sorted()
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sortedThirdElements.removeFirst()
}
}
return result
}
`````````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 result = l
let sortedThirdElements = l.indices.filter { $0 % 3 == 0 }.map { l[$0] }.sorted()
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sortedThirdElements.removeFirst()
}
}
return result
}
// Test cases
print(sortThird(l: [1, 2, 3])) // [1, 2, 3]
print(sortThird(l: [5, 6, 3, 4, 8, 9, 2])) // [2, 6, 3, 4, 8, 9, 5]
```result[index] = sortedThirdElements.removeFirst() // cannot use mutating member on immutable value: 'sortedThirdElements' is a 'let' constantfunc sortThird(l: [Int]) -> [Int] {
let sorted = l.enumerated().filter { $0.offset % 3 == 0 }.map { $0.element }.sorted()
var result = l
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sorted.removeFirst()
}
}
return result
}```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] {
let sorted = l.enumerated().filter { $0.offset % 3 == 0 }.map { $0.element }.sorted()
var result = l
for (index, value) in l.enumerated() {
if index % 3 == 0 {
result[index] = sorted.removeFirst()
}
}
return result
}
`````````python
def sort_third(l):
sorted_l = sorted(l[i] for i in range(len(l)) if i % 3 == 0)
result = l.copy()
for i in range(len(l)):
if i % 3 == 0:
result[i] = sorted_l.pop(0)
return result
print(sort_third([1, 2, 3]))
print(sort_third([5, 6, 3, 4, 8, 9, 2]))
```result[index] = sorted.removeFirst() // cannot use mutating member on immutable value: 'sorted' is a 'let' constantfunc sortThird(l: [Int]) -> [Int] {
var result = l
let sortedIndices = l.indices.filter { $0 % 3 == 0 }.sorted { l[$0] != l[$1] ? l[$0] < l[$1] : $0 < $1 }
for (i, index) in sortedIndices.enumerated() {
result[index] = l[sortedIndices[i]]
}
return result
}```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 result = l
let sortedIndices = l.indices.filter { $0 % 3 == 0 }.sorted { l[$0] != l[$1] ? l[$0] < l[$1] : $0 < $1 }
for (i, index) in sortedIndices.enumerated() {
result[index] = l[sortedIndices[i]]
}
return result
}
``````
```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 result = l
let sortedIndices = l.indices.filter { $0 % 3 == 0 }.sorted { l[$0] != l[$1] ? l[$0] < l[$1] : $0 < $1 }
for (i, index) in sortedIndices.enumerated() {
result[index] = l[sortedIndices[i]]
}
return result
}
// Test cases
print(sortThird(l: [1, 2, 3])) // [1, 2, 3]
print(sortThird(l: [5, 6, 3, 4, 8, 9, 2])) // [2, 6, 3, 4, 8, 9, 5]
``` // XCTAssertTrue failedfunc unique(l: [Int]) -> [Int] {
var set = Set<Int>()
for i in l {
set.insert(i)
}
var arr = Array(set)
arr.sort()
return arr
}
func sum(l: [Int]) -> Int {
var sum = 0
for i in l {
sum += i
}
return sum
}
func product(l: [Int]) -> Int {
var product = 1
for i in l {
product *= i
}
return product
}
func max(l: [Int]) -> Int {
var max = l[0]
for i in l {
if i > max {
max = i
}
}
return max
}
func min(l: [Int]) -> Int {
var min = l[0]
for i in l {
if i < min {
min = i
}
}
return min
}
func average(l: [Int]) -> Double {
var sum = 0
for i in l {
sum += i
}
return Double(sum) / Double(l.count)
}
func median(l: [Int]) -> Double {
var sorted = l.sorted()
if sorted.count % 2 == 0 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2.0
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}
func mode(l: [Int]) -> [Int] {
var counts: [Int: Int] = [:]
for i in l {
if let count = counts[i] {
counts[i] = count + 1
} else {
counts[i] = 1
}
}
var maxCount = 0
for (_, count) in counts {
if count > maxCount {
maxCount = count
}
}
var modes: [Int] = []
for (num, count) in counts {
if count == maxCount {
modes.append(num)
}
}
return modes
}
func range(l: [Int]) -> Int {
return max(l) - min(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] {
var set = Set<Int>()
for i in l {
set.insert(i)
}
var arr = Array(set)
arr.sort()
return arr
}
// Return the sum of all elements in an array
// sum(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == 177
func sum(l: [Int]) -> Int {
var sum = 0
for i in l {
sum += i
}
return sum
}
// Return the product of all elements in an array
// product(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == 0
func product(l: [Int]) -> Int {
var product = 1
for i in l {
product *= i
}
return product
}
// Return the maximum element in an array
// max(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == 123
func max(l: [Int]) -> Int {
var max = l[0]
for i in l {
if i > max {
max = i
}
}
return max
}
// Return the minimum element in an array
// min(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == 0
func min(l: [Int]) -> Int {
var min = l[0]
for i in l {
if i < min {
min = i
}
}
return min
}
// Return the average of all elements in an array
// average(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == 39.25
func average(l: [Int]) -> Double {
var sum = 0
for i in l {
sum += i
}
return Double(sum) / Double(l.count)
}
// Return the median of all elements in an array
// median(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == 5.0
func median(l: [Int]) -> Double {
var sorted = l.sorted()
if sorted.count % 2 == 0 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2.0
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}
// Return the mode of all elements in an array
// mode(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == [5, 3]
func mode(l: [Int]) -> [Int] {
var counts: [Int: Int] = [:]
for i in l {
if let count = counts[i] {
counts[i] = count + 1
} else {
counts[i] = 1
}
}
var maxCount = 0
for (_, count) in counts {
if count > maxCount {
maxCount = count
}
}
var modes: [Int] = []
for (num, count) in counts {
if count == maxCount {
modes.append(num)
}
}
return modes
}
// Return the range of all elements in an array
// range(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]) == 123 - 0
func range(l: [Int]) -> Int {
return max(l) - min(l)
}
// Return the variance of all elements in an array
// variance(l: [5, 3, 5, 2, 3, 3, var sorted = l.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constantreturn max(l) - min(l) // missing argument label 'l:' in callreturn max(l) - min(l) // missing argument label 'l:' in callfunc unique(l: [Int]) -> [Int] {
var set = Set<Int>()
for i in l {
set.insert(i)
}
var arr = Array(set)
arr.sort()
return arr
}```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 set = Set<Int>()
for i in l {
set.insert(i)
}
var arr = Array(set)
arr.sort()
return arr
}
`````````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 set = Set<Int>()
for i in l {
set.insert(i)
}
var arr = Array(set)
arr.sort()
return arr
}
unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123])
```func unique(l: [Int]) -> [Int] {
var set = Set<Int>()
for i in l {
set.insert(i)
}
var arr = Array(set)
arr.sort()
return arr
}```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 set = Set<Int>()
for i in l {
set.insert(i)
}
var arr = Array(set)
arr.sort()
return arr
}
`````````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 set = Set<Int>()
for i in l {
set.insert(i)
}
var arr = Array(set)
arr.sort()
return arr
}
unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123])
```func unique(l: [Int]) -> [Int] {
var set = Set<Int>()
for element in l {
set.insert(element)
}
var array = Array(set)
array.sort()
return array
}```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 set = Set<Int>()
for element in l {
set.insert(element)
}
var array = Array(set)
array.sort()
return array
}
unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123])
`````````python
def unique(l):
return sorted(set(l))
unique([5, 3, 5, 2, 3, 3, 9, 0, 123])
```func unique(l: [Int]) -> [Int] {
var set = Set<Int>()
for i in l {
set.insert(i)
}
var arr = Array(set)
arr.sort()
return arr
}```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 set = Set<Int>()
for i in l {
set.insert(i)
}
var arr = Array(set)
arr.sort()
return arr
}
`````````swift
// Test the unique function
let result = unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123])
print(result) // [0, 2, 3, 5, 9, 123]
```func unique(l: [Int]) -> [Int] {
var seen = Set<Int>()
var result: [Int] = []
for element in l {
if seen.contains(element) {
continue
} else {
seen.insert(element)
result.append(element)
}
}
return result.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 seen = Set<Int>()
var result: [Int] = []
for element in l {
if seen.contains(element) {
continue
} else {
seen.insert(element)
result.append(element)
}
}
return result.sorted()
}
print(unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]))
`````````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 seen = Set<Int>()
var result: [Int] = []
for element in l {
if seen.contains(element) {
continue
} else {
seen.insert(element)
result.append(element)
}
}
return result.sorted()
}
print(unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]))
```func unique(l: [Int]) -> [Int] {
var set = Set<Int>()
for i in l {
set.insert(i)
}
var arr = Array(set)
arr.sort()
return arr
}```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 set = Set<Int>()
for i in l {
set.insert(i)
}
var arr = Array(set)
arr.sort()
return arr
}
`````````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 set = Set<Int>()
for i in l {
set.insert(i)
}
var arr = Array(set)
arr.sort()
return arr
}
unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123])
```func unique(l: [Int]) -> [Int] {
var set = Set<Int>()
for i in l {
set.insert(i)
}
var arr = Array(set)
arr.sort()
return arr
}```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 set = Set<Int>()
for i in l {
set.insert(i)
}
var arr = Array(set)
arr.sort()
return arr
}
// Test
print(unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]))
`````````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 set = Set<Int>()
for i in l {
set.insert(i)
}
var arr = Array(set)
arr.sort()
return arr
}
// Test
print(unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123]))
```func unique(l: [Int]) -> [Int] {
var set = Set<Int>()
for i in l {
set.insert(i)
}
var arr = Array(set)
arr.sort()
return arr
}```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 set = Set<Int>()
for i in l {
set.insert(i)
}
var arr = Array(set)
arr.sort()
return arr
}
unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123])
`````````python
# Return sorted unique elements in an array
# unique([5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]
def unique(l):
return sorted(set(l))
unique([5, 3, 5, 2, 3, 3, 9, 0, 123])
```func unique(l: [Int]) -> [Int] {
var seen = Set<Int>()
var result: [Int] = []
for element in l {
if seen.contains(element) {
continue
} else {
seen.insert(element)
result.append(element)
}
}
return result.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 seen = Set<Int>()
var result: [Int] = []
for element in l {
if seen.contains(element) {
continue
} else {
seen.insert(element)
result.append(element)
}
}
return result.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 seen = Set<Int>()
var result: [Int] = []
for element in l {
if seen.contains(element) {
continue
} else {
seen.insert(element)
result.append(element)
}
}
return result.sorted()
}
unique(l: [5, 3, 5, 2, 3, 3, 9, 0, 123])
```func maxElement(l: [Int]) -> Int {
var max = l[0]
for i in l {
if i > max {
max = i
}
}
return max
}```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 l {
if i > max {
max = i
}
}
return max
}
`````````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 l {
if i > max {
max = i
}
}
return max
}
```func maxElement(l: [Int]) -> Int {
var max = l[0]
for i in l {
if i > max {
max = i
}
}
return max
}
func minElement(l: [Int]) -> Int {
var min = l[0]
for i in l {
if i < min {
min = i
}
}
return min
}
func sumElements(l: [Int]) -> Int {
var sum = 0
for i in l {
sum += i
}
return sum
}
func averageElements(l: [Int]) -> Double {
var sum = 0
for i in l {
sum += i
}
return Double(sum) / Double(l.count)
}
func productElements(l: [Int]) -> Int {
var product = 1
for i in l {
product *= i
}
return product
}
func countEvenElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 == 0 {
count += 1
}
}
return count
}
func countOddElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 != 0 {
count += 1
}
}
return count
}
func countPositiveElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i > 0 {
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 l {
if i > max {
max = 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 l {
if i < min {
min = i
}
}
return min
}
// Return the sum of all elements in the array.
// sumElements(l: [1, 2, 3]) == 6
// sumElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 118
func sumElements(l: [Int]) -> Int {
var sum = 0
for i in l {
sum += i
}
return sum
}
// Return the average of all elements in the array.
// averageElements(l: [1, 2, 3]) == 2
// averageElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 11.8
func averageElements(l: [Int]) -> Double {
var sum = 0
for i in l {
sum += i
}
return Double(sum) / Double(l.count)
}
// Return the product of all elements in the array.
// productElements(l: [1, 2, 3]) == 6
// productElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 0
func productElements(l: [Int]) -> Int {
var product = 1
for i in l {
product *= i
}
return product
}
// Return the number of even elements in the array.
// countEvenElements(l: [1, 2, 3]) == 1
// countEvenElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 6
func countEvenElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 == 0 {
count += 1
}
}
return count
}
// Return the number of odd elements in the array.
// countOddElements(l: [1, 2, 3]) == 2
// countOddElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 9
func countOddElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 != 0 {
count += 1
}
}
return count
}
// Return the number of positive elements in the array.
// countPositiveElements(l: [1, 2, 3]) == 3
// countPositiveElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 11
func countPositiveElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i > 0 {
count += 1
}
}
return count
}
// Return the number of negative elements in the array.
// countNegativeElements(l: [1, 2, 3]) == 0
// countNegativeElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 2
func countNegfunc maxElement(l: [Int]) -> Int {
var max = l[0]
for i in l {
if i > max {
max = i
}
}
return max
}```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 l {
if i > max {
max = i
}
}
return max
}
`````````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 l {
if i > max {
max = i
}
}
return max
}
```func maxElement(l: [Int]) -> Int {
var max = l[0]
for i in l {
if i > max {
max = i
}
}
return max
}
func minElement(l: [Int]) -> Int {
var min = l[0]
for i in l {
if i < min {
min = i
}
}
return min
}
func sumElements(l: [Int]) -> Int {
var sum = 0
for i in l {
sum += i
}
return sum
}
func averageElements(l: [Int]) -> Double {
var sum = 0
for i in l {
sum += i
}
return Double(sum) / Double(l.count)
}
func countEvenElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 == 0 {
count += 1
}
}
return count
}
func countOddElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 != 0 {
count += 1
}
}
return count
}
func countPositiveElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i > 0 {
count += 1
}
}
return count
}
func countNegativeElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i < 0 {
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 l {
if i > max {
max = 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 l {
if i < min {
min = i
}
}
return min
}
// Return the sum of all elements in the array.
// sumElements(l: [1, 2, 3]) == 6
// sumElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 118
func sumElements(l: [Int]) -> Int {
var sum = 0
for i in l {
sum += i
}
return sum
}
// Return the average of all elements in the array.
// averageElements(l: [1, 2, 3]) == 2.0
// averageElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 29.6
func averageElements(l: [Int]) -> Double {
var sum = 0
for i in l {
sum += i
}
return Double(sum) / Double(l.count)
}
// Return the number of even elements in the array.
// countEvenElements(l: [1, 2, 3]) == 1
// countEvenElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 6
func countEvenElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 == 0 {
count += 1
}
}
return count
}
// Return the number of odd elements in the array.
// countOddElements(l: [1, 2, 3]) == 2
// countOddElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 9
func countOddElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 != 0 {
count += 1
}
}
return count
}
// Return the number of positive elements in the array.
// countPositiveElements(l: [1, 2, 3]) == 3
// countPositiveElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 11
func countPositiveElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i > 0 {
count += 1
}
}
return count
}
// Return the number of negative elements in the array.
// countNegativeElements(l: [1, 2, 3]) == 0
// countNegativeElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 2
func countNegativeElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i < 0 {
count += 1
}
}
return count
}
// Return the number of zero elements in the array.
// countZeroElements(l: [1, 2, 3]) == 0
// countZeroElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 12func maxElement(l: [Int]) -> Int {
var max = l[0]
for i in l {
if i > max {
max = i
}
}
return max
}
func minElement(l: [Int]) -> Int {
var min = l[0]
for i in l {
if i < min {
min = i
}
}
return min
}
func sumElements(l: [Int]) -> Int {
var sum = 0
for i in l {
sum += i
}
return sum
}
func averageElements(l: [Int]) -> Double {
var sum = 0
for i in l {
sum += i
}
return Double(sum) / Double(l.count)
}
func countEven(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 == 0 {
count += 1
}
}
return count
}
func countOdd(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 != 0 {
count += 1
}
}
return count
}
func countPrime(l: [Int]) -> Int {
var count = 0
for i in l {
if i > 1 {
var isPrime = true
for j in 2..<i {
if i % j == 0 {
isPrime = false
break
}
}
if isPrime {
count += 1
}
}
}
return count
}
func countNegative(l: [Int]) -> Int {
var count = 0
for i in l {
if i < 0 {
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 l {
if i > max {
max = 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 l {
if i < min {
min = i
}
}
return min
}
// Return sum of all elements in the array.
// sumElements(l: [1, 2, 3]) == 6
// sumElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 116
func sumElements(l: [Int]) -> Int {
var sum = 0
for i in l {
sum += i
}
return sum
}
// Return average of all elements in the array.
// averageElements(l: [1, 2, 3]) == 2
// averageElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 28.8
func averageElements(l: [Int]) -> Double {
var sum = 0
for i in l {
sum += i
}
return Double(sum) / Double(l.count)
}
// Return the number of even elements in the array.
// countEven(l: [1, 2, 3]) == 1
// countEven(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 6
func countEven(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 == 0 {
count += 1
}
}
return count
}
// Return the number of odd elements in the array.
// countOdd(l: [1, 2, 3]) == 2
// countOdd(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 5
func countOdd(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 != 0 {
count += 1
}
}
return count
}
// Return the number of prime elements in the array.
// countPrime(l: [1, 2, 3]) == 2
// countPrime(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 3
func countPrime(l: [Int]) -> Int {
var count = 0
for i in l {
if i > 1 {
var isPrime = true
for j in 2..<i {
if i % j == 0 {
isPrime = false
break
}
}
if isPrime {
count += 1
}
}
}
return count
}
// Return the number of negative elements in the array.
// countNegative(l: [1, 2, 3]) == 0
// countNegative(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 2
func countNegative(l: [Int]) -> Int {
var count = 0
for i in l {
if i < 0 {
count += 1
}
}
return count
}
// Return the number of positive elements in the array.
// countPositive(l: [1, 2, 3])func maxElement(l: [Int]) -> Int {
var max = l[0]
for i in l {
if i > max {
max = i
}
}
return max
}
func minElement(l: [Int]) -> Int {
var min = l[0]
for i in l {
if i < min {
min = i
}
}
return min
}
func sumElements(l: [Int]) -> Int {
var sum = 0
for i in l {
sum += i
}
return sum
}
func productElements(l: [Int]) -> Int {
var product = 1
for i in l {
product *= i
}
return product
}
func averageElements(l: [Int]) -> Double {
var sum = 0
for i in l {
sum += i
}
return Double(sum) / Double(l.count)
}
func medianElements(l: [Int]) -> Double {
var sorted = l.sorted()
if sorted.count % 2 == 0 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2.0
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}
func modeElements(l: [Int]) -> Int {
var count = [Int: Int]()
for i in l {
if let c = count[i] {
count[i] = c + 1
} else {
count[i] = 1
}
}
var maxCount = 0
var mode = 0
for (value, c) in count {
if c > maxCount {
maxCount = c
mode = value
}
}
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 l {
if i > max {
max = 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 l {
if i < min {
min = i
}
}
return min
}
// Return the sum of all elements in the array.
// sumElements(l: [1, 2, 3]) == 6
// sumElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 118
func sumElements(l: [Int]) -> Int {
var sum = 0
for i in l {
sum += i
}
return sum
}
// Return the product of all elements in the array.
// productElements(l: [1, 2, 3]) == 6
// productElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 0
func productElements(l: [Int]) -> Int {
var product = 1
for i in l {
product *= i
}
return product
}
// Return the average of all elements in the array.
// averageElements(l: [1, 2, 3]) == 2
// averageElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 29.4
func averageElements(l: [Int]) -> Double {
var sum = 0
for i in l {
sum += i
}
return Double(sum) / Double(l.count)
}
// Return the median of all elements in the array.
// medianElements(l: [1, 2, 3]) == 2
// medianElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 3
func medianElements(l: [Int]) -> Double {
var sorted = l.sorted()
if sorted.count % 2 == 0 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2.0
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}
// Return the mode of all elements in the array.
// modeElements(l: [1, 2, 2, 3]) == 2
// modeElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 1
func modeElements(l: [Int]) -> Int {
var count = [Int: Int]()
for i in l {
if let c = count[i] {
count[i] = c + 1
} else {
count[i] = 1
}
}
var maxCount = 0
var mode = 0
for (value, c) in count {
if c > maxCount {
maxCount = c
mode = value
}
}
return mode
}
// Return the range of all elements in the array.
// rangeElements(l: [1, 2, 3]) == 2
// rangeElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 123
func rangeElements(l: [Int]) -> Int {
var min = l[0var sorted = l.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constantfunc maxElement(l: [Int]) -> Int {
var max = l[0]
for i in l {
if i > max {
max = i
}
}
return max
}
func minElement(l: [Int]) -> Int {
var min = l[0]
for i in l {
if i < min {
min = i
}
}
return min
}
func sumElements(l: [Int]) -> Int {
var sum = 0
for i in l {
sum += i
}
return sum
}
func averageElements(l: [Int]) -> Double {
var sum = 0
for i in l {
sum += i
}
return Double(sum) / Double(l.count)
}
func productElements(l: [Int]) -> Int {
var product = 1
for i in l {
product *= i
}
return product
}
func countEvenElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 == 0 {
count += 1
}
}
return count
}
func countOddElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 != 0 {
count += 1
}
}
return count
}
func countPositiveElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i > 0 {
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 l {
if i > max {
max = 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 l {
if i < min {
min = i
}
}
return min
}
// Return the sum of all elements in the array.
// sumElements(l: [1, 2, 3]) == 6
// sumElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 118
func sumElements(l: [Int]) -> Int {
var sum = 0
for i in l {
sum += i
}
return sum
}
// Return the average of all elements in the array.
// averageElements(l: [1, 2, 3]) == 2.0
// averageElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 23.6
func averageElements(l: [Int]) -> Double {
var sum = 0
for i in l {
sum += i
}
return Double(sum) / Double(l.count)
}
// Return the product of all elements in the array.
// productElements(l: [1, 2, 3]) == 6
// productElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 0
func productElements(l: [Int]) -> Int {
var product = 1
for i in l {
product *= i
}
return product
}
// Return the number of even elements in the array.
// countEvenElements(l: [1, 2, 3]) == 1
// countEvenElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 6
func countEvenElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 == 0 {
count += 1
}
}
return count
}
// Return the number of odd elements in the array.
// countOddElements(l: [1, 2, 3]) == 2
// countOddElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 9
func countOddElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 != 0 {
count += 1
}
}
return count
}
// Return the number of positive elements in the array.
// countPositiveElements(l: [1, 2, 3]) == 3
// countPositiveElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 11
func countPositiveElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i > 0 {
count += 1
}
}
return count
}
// Return the number of negative elements in the array.
// countNegativeElements(l: [1, 2, 3]) == 0
// countNegativeElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 2
funcfunc maxElement(l: [Int]) -> Int {
var max = l[0]
for i in l {
if i > max {
max = i
}
}
return max
}```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 l {
if i > max {
max = i
}
}
return max
}
`````````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 l {
if i > max {
max = i
}
}
return max
}
```func maxElement(l: [Int]) -> Int {
var max = l[0]
for i in l {
if i > max {
max = i
}
}
return max
}
func minElement(l: [Int]) -> Int {
var min = l[0]
for i in l {
if i < min {
min = i
}
}
return min
}
func sumElements(l: [Int]) -> Int {
var sum = 0
for i in l {
sum += i
}
return sum
}
func averageElements(l: [Int]) -> Double {
var sum = 0
for i in l {
sum += i
}
return Double(sum) / Double(l.count)
}
func countEvenElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 == 0 {
count += 1
}
}
return count
}
func countOddElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 != 0 {
count += 1
}
}
return count
}
func countPositiveElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i > 0 {
count += 1
}
}
return count
}
func countNegativeElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i < 0 {
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 l {
if i > max {
max = 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 l {
if i < min {
min = i
}
}
return min
}
// Return the sum of all elements in the array.
// sumElements(l: [1, 2, 3]) == 6
// sumElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 116
func sumElements(l: [Int]) -> Int {
var sum = 0
for i in l {
sum += i
}
return sum
}
// Return the average of all elements in the array.
// averageElements(l: [1, 2, 3]) == 2.0
// averageElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 28.8
func averageElements(l: [Int]) -> Double {
var sum = 0
for i in l {
sum += i
}
return Double(sum) / Double(l.count)
}
// Return the number of even elements in the array.
// countEvenElements(l: [1, 2, 3]) == 1
// countEvenElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 6
func countEvenElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 == 0 {
count += 1
}
}
return count
}
// Return the number of odd elements in the array.
// countOddElements(l: [1, 2, 3]) == 2
// countOddElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 9
func countOddElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i % 2 != 0 {
count += 1
}
}
return count
}
// Return the number of positive elements in the array.
// countPositiveElements(l: [1, 2, 3]) == 3
// countPositiveElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 11
func countPositiveElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i > 0 {
count += 1
}
}
return count
}
// Return the number of negative elements in the array.
// countNegativeElements(l: [1, 2, 3]) == 0
// countNegativeElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 2
func countNegativeElements(l: [Int]) -> Int {
var count = 0
for i in l {
if i < 0 {
count += 1
}
}
return count
}
// Return the number of zero elements in the array.
// countZeroElements(l: [1, 2, 3]) == 0
// countZeroElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 12func maxElement(l: [Int]) -> Int {
var max = l[0]
for i in l {
if i > max {
max = i
}
}
return max
}
func minElement(l: [Int]) -> Int {
var min = l[0]
for i in l {
if i < min {
min = i
}
}
return min
}
func sumElements(l: [Int]) -> Int {
var sum = 0
for i in l {
sum += i
}
return sum
}
func productElements(l: [Int]) -> Int {
var product = 1
for i in l {
product *= i
}
return product
}
func averageElements(l: [Int]) -> Double {
var sum = 0
for i in l {
sum += i
}
return Double(sum) / Double(l.count)
}
func medianElements(l: [Int]) -> Double {
var sorted = l.sorted()
if sorted.count % 2 == 0 {
let midIndex = sorted.count / 2
return (Double(sorted[midIndex - 1]) + Double(sorted[midIndex])) / 2.0
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}
func modeElements(l: [Int]) -> Int {
var count = [Int: Int]()
for i in l {
if let c = count[i] {
count[i] = c + 1
} else {
count[i] = 1
}
}
var maxCount = 0
var mode = 0
for (value, c) in count {
if c > maxCount {
maxCount = c
mode = value
}
}
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 l {
if i > max {
max = 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 l {
if i < min {
min = i
}
}
return min
}
// Return the sum of all elements in the array.
// sumElements(l: [1, 2, 3]) == 6
// sumElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 118
func sumElements(l: [Int]) -> Int {
var sum = 0
for i in l {
sum += i
}
return sum
}
// Return the product of all elements in the array.
// productElements(l: [1, 2, 3]) == 6
// productElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 0
func productElements(l: [Int]) -> Int {
var product = 1
for i in l {
product *= i
}
return product
}
// Return the average of all elements in the array.
// averageElements(l: [1, 2, 3]) == 2.0
// averageElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 39.0
func averageElements(l: [Int]) -> Double {
var sum = 0
for i in l {
sum += i
}
return Double(sum) / Double(l.count)
}
// Return the median of all elements in the array.
// medianElements(l: [1, 2, 3]) == 2
// medianElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 3
func medianElements(l: [Int]) -> Double {
var sorted = l.sorted()
if sorted.count % 2 == 0 {
let midIndex = sorted.count / 2
return (Double(sorted[midIndex - 1]) + Double(sorted[midIndex])) / 2.0
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}
// Return the mode of all elements in the array.
// modeElements(l: [1, 2, 2, 3]) == 2
// modeElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 1
func modeElements(l: [Int]) -> Int {
var count = [Int: Int]()
for i in l {
if let c = count[i] {
count[i] = c + 1
} else {
count[i] = 1
}
}
var maxCount = 0
var mode = 0
for (value, c) in count {
if c > maxCount {
maxCount = c
mode = value
}
}
return mode
}
// Return the range of all elements in the array.
// rangeElements(l: [1, 2, 3]) == 2
// rangeElements(l: [5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 128
func rangeElements(l: [Int]) -> Int {
var sorted = l.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constantfunc fizzBuzz(n: Int) -> Int {
var count = 0
for i in 11...n-1 {
if i % 11 == 0 || i % 13 == 0 {
count += String(i).filter { $0 == "7" }.count
}
}
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 11...n-1 {
if i % 11 == 0 || i % 13 == 0 {
count += String(i).filter { $0 == "7" }.count
}
}
return count
}
``````
```swift
// Testing the function
print(fizzBuzz(n: 50)) // 0
print(fizzBuzz(n: 78)) // 2
print(fizzBuzz(n: 79)) // 3
```func fizzBuzz(n: Int) -> Int {
var count = 0
for i in 0..<n {
if i % 11 == 0 || i % 13 == 0 {
let str = String(i)
count += str.filter { $0 == "7" }.count
}
}
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 {
let str = String(i)
count += str.filter { $0 == "7" }.count
}
}
return count
}
``````
```swift
// Test the function with some test cases
print(fizzBuzz(n: 50)) // 0
print(fizzBuzz(n: 78)) // 2
print(fizzBuzz(n: 79)) // 3
```func fizzBuzz(n: Int) -> Int {
var count = 0
for i in 11...n-1 {
if i % 11 == 0 || i % 13 == 0 {
count += String(i).filter { $0 == "7" }.count
}
}
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 11...n-1 {
if i % 11 == 0 || i % 13 == 0 {
count += String(i).filter { $0 == "7" }.count
}
}
return count
}
``````
```swift
// Testing the function
print(fizzBuzz(n: 50)) // 0
print(fizzBuzz(n: 78)) // 2
print(fizzBuzz(n: 79)) // 3
```func fizzBuzz(n: Int) -> Int {
var count = 0
for i in 1...n-1 {
if i % 11 == 0 || i % 13 == 0 {
count += String(i).filter { $0 == "7" }.count
}
}
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-1 {
if i % 11 == 0 || i % 13 == 0 {
count += String(i).filter { $0 == "7" }.count
}
}
return count
}
``````
```swift
// Testing the function
print(fizzBuzz(n: 50)) // 0
print(fizzBuzz(n: 78)) // 2
print(fizzBuzz(n: 79)) // 3
```func fizzBuzz(n: Int) -> Int {
var count = 0
for i in 11...n-1 {
if i % 11 == 0 || i % 13 == 0 {
count += String(i).filter { $0 == "7" }.count
}
}
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 11...n-1 {
if i % 11 == 0 || i % 13 == 0 {
count += String(i).filter { $0 == "7" }.count
}
}
return count
}
``````
```swift
// Test the function with some test cases
print(fizzBuzz(n: 50)) // 0
print(fizzBuzz(n: 78)) // 2
print(fizzBuzz(n: 79)) // 3
```func fizzBuzz(n: Int) -> Int {
var count = 0
for i in 0..<n {
if i % 11 == 0 || i % 13 == 0 {
let str = String(i)
count += str.filter { $0 == "7" }.count
}
}
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 {
let str = String(i)
count += str.filter { $0 == "7" }.count
}
}
return count
}
``````
```python
def fizz_buzz(n):
count = 0
for i in range(n):
if i % 11 == 0 or i % 13 == 0:
str_i = str(i)
count += str_i.count('7')
return count
print(fizz_buzz(50))
print(fizz_buzz(78))
print(fizz_buzz(79))
```func fizzBuzz(n: Int) -> Int {
var count = 0
for i in 11...n-1 {
if i % 11 == 0 || i % 13 == 0 {
count += String(i).filter { $0 == "7" }.count
}
}
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 11...n-1 {
if i % 11 == 0 || i % 13 == 0 {
count += String(i).filter { $0 == "7" }.count
}
}
return count
}
`````````swift
// Test the function with some test cases
print(fizzBuzz(n: 50)) // Expected output: 0
print(fizzBuzz(n: 78)) // Expected output: 2
print(fizzBuzz(n: 79)) // Expected output: 3
```func fizzBuzz(n: Int) -> Int {
var count = 0
for i in 11...n-1 {
if i % 11 == 0 || i % 13 == 0 {
count += String(i).filter { $0 == "7" }.count
}
}
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 11...n-1 {
if i % 11 == 0 || i % 13 == 0 {
count += String(i).filter { $0 == "7" }.count
}
}
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 11...n-1 {
if i % 11 == 0 || i % 13 == 0 {
count += String(i).filter { $0 == "7" }.count
}
}
return count
}
fizzBuzz(n: 50)
```func fizzBuzz(n: Int) -> Int {
var count = 0
for i in 0..<n {
if i % 11 == 0 || i % 13 == 0 {
count += String(i).filter { $0 == "7" }.count
}
}
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 += String(i).filter { $0 == "7" }.count
}
}
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 += String(i).filter { $0 == "7" }.count
}
}
return count
}
// Test cases
print(fizzBuzz(n: 50)) // 0
print(fizzBuzz(n: 78)) // 2
print(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 += String(i).filter { $0 == "7" }.count
}
}
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 += String(i).filter { $0 == "7" }.count
}
}
return count
}
``````
```swift
// Testing the function
print(fizzBuzz(n: 50)) // Output: 0
print(fizzBuzz(n: 78)) // Output: 2
print(fizzBuzz(n: 79)) // Output: 3
```func sortEven(l: [Int]) -> [Int] {
var evenIndices = [Int]()
var oddIndices = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(l[i])
} else {
oddIndices.append(l[i])
}
}
evenIndices.sort()
var result = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
result.append(evenIndices.removeFirst())
} else {
result.append(oddIndices.removeFirst())
}
}
return result
}```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 evenIndices = [Int]()
var oddIndices = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(l[i])
} else {
oddIndices.append(l[i])
}
}
evenIndices.sort()
var result = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
result.append(evenIndices.removeFirst())
} else {
result.append(oddIndices.removeFirst())
}
}
return result
}
``````
```swift
// Test cases
print(sortEven(l: [1, 2, 3])) // [1, 2, 3]
print(sortEven(l: [5, 6, 3, 4])) // [3, 6, 5, 4]
print(sortEven(l: [9, 2, 7, 4, 5, 6, 1, 8, 3])) // [1, 2, 3, 4, 5, 6, 7, 8, 9]
```func sortEven(l: [Int]) -> [Int] {
var evenIndices = [Int]()
var oddIndices = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(l[i])
} else {
oddIndices.append(l[i])
}
}
evenIndices.sort()
var result = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
result.append(evenIndices.removeFirst())
} else {
result.append(oddIndices.removeFirst())
}
}
return result
}```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 evenIndices = [Int]()
var oddIndices = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(l[i])
} else {
oddIndices.append(l[i])
}
}
evenIndices.sort()
var result = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
result.append(evenIndices.removeFirst())
} else {
result.append(oddIndices.removeFirst())
}
}
return result
}
sortEven(l: [1, 2, 3])
``````
```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 evenIndices = [Int]()
var oddIndices = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(l[i])
} else {
oddIndices.append(l[i])
}
}
evenIndices.sort()
var result = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
result.append(evenIndices.removeFirst())
} else {
result.append(oddIndices.removeFirst())
}
}
return result
}
sortEven(l: [1, 2, 3])
```func sortEven(l: [Int]) -> [Int] {
var result = l
var evenIndices = [Int]()
var evenValues = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(i)
evenValues.append(l[i])
}
}
evenValues.sort()
for i in 0..<evenIndices.count {
result[evenIndices[i]] = evenValues[i]
}
return result
}```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 result = l
var evenIndices = [Int]()
var evenValues = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(i)
evenValues.append(l[i])
}
}
evenValues.sort()
for i in 0..<evenIndices.count {
result[evenIndices[i]] = evenValues[i]
}
return result
}
``````
```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 result = l
var evenIndices = [Int]()
var evenValues = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(i)
evenValues.append(l[i])
}
}
evenValues.sort()
for i in 0..<evenIndices.count {
result[evenIndices[i]] = evenValues[i]
}
return result
}
// Test cases
print(sortEven(l: [1, 2, 3])) // [1, 2, 3]
print(sortEven(l: [5, 6, 3, 4])) // [3, 6, 5, 4]
```func sortEven(l: [Int]) -> [Int] {
var evenIndices = [Int]()
var oddIndices = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(l[i])
} else {
oddIndices.append(l[i])
}
}
evenIndices.sort()
var result = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
result.append(evenIndices.removeFirst())
} else {
result.append(oddIndices.removeFirst())
}
}
return result
}```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 evenIndices = [Int]()
var oddIndices = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(l[i])
} else {
oddIndices.append(l[i])
}
}
evenIndices.sort()
var result = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
result.append(evenIndices.removeFirst())
} else {
result.append(oddIndices.removeFirst())
}
}
return result
}
``````
```python
def sort_even(l):
even_indices = []
odd_indices = []
for i in range(len(l)):
if i % 2 == 0:
even_indices.append(l[i])
else:
odd_indices.append(l[i])
even_indices.sort()
result = []
for i in range(len(l)):
if i % 2 == 0:
result.append(even_indices.pop(0))
else:
result.append(odd_indices.pop(0))
return result
```
```python
# Testing the function
print(sort_even([1, 2, 3])) # [1, 2, 3]
print(sort_even([5, 6, 3, 4])) # [3, 6, 5, 4]
```func sortEven(l: [Int]) -> [Int] {
var evenIndices = [Int]()
var oddIndices = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(l[i])
} else {
oddIndices.append(l[i])
}
}
evenIndices.sort()
var result = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
result.append(evenIndices.removeFirst())
} else {
result.append(oddIndices.removeFirst())
}
}
return result
}```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 evenIndices = [Int]()
var oddIndices = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(l[i])
} else {
oddIndices.append(l[i])
}
}
evenIndices.sort()
var result = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
result.append(evenIndices.removeFirst())
} else {
result.append(oddIndices.removeFirst())
}
}
return result
}
``````
```python
def sort_even(l):
even_indices = []
odd_indices = []
for i in range(len(l)):
if i % 2 == 0:
even_indices.append(l[i])
else:
odd_indices.append(l[i])
even_indices.sort()
result = []
for i in range(len(l)):
if i % 2 == 0:
result.append(even_indices.pop(0))
else:
result.append(odd_indices.pop(0))
return result
```func sortEven(l: [Int]) -> [Int] {
var evenIndices = [Int]()
var oddIndices = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(l[i])
} else {
oddIndices.append(l[i])
}
}
evenIndices.sort()
var result = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
result.append(evenIndices.removeFirst())
} else {
result.append(oddIndices.removeFirst())
}
}
return result
}```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 evenIndices = [Int]()
var oddIndices = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(l[i])
} else {
oddIndices.append(l[i])
}
}
evenIndices.sort()
var result = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
result.append(evenIndices.removeFirst())
} else {
result.append(oddIndices.removeFirst())
}
}
return result
}
``````
```python
# 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([1, 2, 3]) == [1, 2, 3]
# sortEven([5, 6, 3, 4]) == [3, 6, 5, 4]
def sortEven(l):
evenIndices = []
oddIndices = []
for i in range(len(l)):
if i % 2 == 0:
evenIndices.append(l[i])
else:
oddIndices.append(l[i])
evenIndices.sort()
result = []
for i in range(len(l)):
if i % 2 == 0:
result.append(evenIndices.pop(0))
else:
result.append(oddIndices.pop(0))
return result
```func sortEven(l: [Int]) -> [Int] {
var evenIndices = [Int]()
var oddIndices = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(l[i])
} else {
oddIndices.append(l[i])
}
}
evenIndices.sort()
var result = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
result.append(evenIndices.removeFirst())
} else {
result.append(oddIndices.removeFirst())
}
}
return result
}```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 evenIndices = [Int]()
var oddIndices = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(l[i])
} else {
oddIndices.append(l[i])
}
}
evenIndices.sort()
var result = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
result.append(evenIndices.removeFirst())
} else {
result.append(oddIndices.removeFirst())
}
}
return result
}
sortEven(l: [1, 2, 3])
``````func sortEven(l: [Int]) -> [Int] {
var evenIndices = [Int]()
var oddIndices = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(l[i])
} else {
oddIndices.append(l[i])
}
}
evenIndices.sort()
var result = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
result.append(evenIndices.removeFirst())
} else {
result.append(oddIndices.removeFirst())
}
}
return result
}```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 evenIndices = [Int]()
var oddIndices = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(l[i])
} else {
oddIndices.append(l[i])
}
}
evenIndices.sort()
var result = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
result.append(evenIndices.removeFirst())
} else {
result.append(oddIndices.removeFirst())
}
}
return result
}
sortEven(l: [1, 2, 3])
``````func sortEven(l: [Int]) -> [Int] {
var result = l
var evenIndices = [Int]()
var evenValues = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(i)
evenValues.append(l[i])
}
}
evenValues.sort()
for i in 0..<evenIndices.count {
result[evenIndices[i]] = evenValues[i]
}
return result
}```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 result = l
var evenIndices = [Int]()
var evenValues = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(i)
evenValues.append(l[i])
}
}
evenValues.sort()
for i in 0..<evenIndices.count {
result[evenIndices[i]] = evenValues[i]
}
return result
}
``````
```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 result = l
var evenIndices = [Int]()
var evenValues = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(i)
evenValues.append(l[i])
}
}
evenValues.sort()
for i in 0..<evenIndices.count {
result[evenIndices[i]] = evenValues[i]
}
return result
}
sortEven(l: [1, 2, 3])
```func sortEven(l: [Int]) -> [Int] {
var evenIndices = [Int]()
var oddIndices = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(l[i])
} else {
oddIndices.append(l[i])
}
}
evenIndices.sort()
var result = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
result.append(evenIndices.removeFirst())
} else {
result.append(oddIndices.removeFirst())
}
}
return result
}```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 evenIndices = [Int]()
var oddIndices = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
evenIndices.append(l[i])
} else {
oddIndices.append(l[i])
}
}
evenIndices.sort()
var result = [Int]()
for i in 0..<l.count {
if i % 2 == 0 {
result.append(evenIndices.removeFirst())
} else {
result.append(oddIndices.removeFirst())
}
}
return result
}
``````
```python
# 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]
def sortEven(l):
evenIndices = []
oddIndices = []
for i in range(len(l)):
if i % 2 == 0:
evenIndices.append(l[i])
else:
oddIndices.append(l[i])
evenIndices.sort()
result = []
for i in range(len(l)):
if i % 2 == 0:
result.append(evenIndices.pop(0))
else:
result.append(oddIndices.pop(0))
return result
```func primeFib(n: Int) -> Int {
var fib1 = 0
var fib2 = 1
var count = 0
while true {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
if count == n {
return fib
}
}
fib1 = fib2
fib2 = fib
}
}
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 fib1 = 0
var fib2 = 1
var count = 0
while true {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
if count == n {
return fib
}
}
fib1 = fib2
fib2 = fib
}
}
// isPrime checks if a number is prime.
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 fib1 = 0
var fib2 = 1
var count = 0
while true {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
if count == n {
return fib
}
}
fib1 = fib2
fib2 = fib
}
}
// isPrime checks if a number is prime.
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
```func primeFib(n: Int) -> Int {
var fib1 = 0
var fib2 = 1
var count = 0
while true {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
if count == n {
return fib
}
}
fib1 = fib2
fib2 = fib
}
}
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 fib1 = 0
var fib2 = 1
var count = 0
while true {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
if count == n {
return fib
}
}
fib1 = fib2
fib2 = fib
}
}
// isPrime checks if a number is prime.
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 fib1 = 0
var fib2 = 1
var count = 0
while true {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
if count == n {
return fib
}
}
fib1 = fib2
fib2 = fib
}
}
// isPrime checks if a number is prime.
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
```func primeFib(n: Int) -> Int {
var fib1 = 0
var fib2 = 1
var count = 0
while true {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
if count == n {
return fib
}
}
fib1 = fib2
fib2 = fib
}
}
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 fib1 = 0
var fib2 = 1
var count = 0
while true {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
if count == n {
return fib
}
}
fib1 = fib2
fib2 = fib
}
}
// isPrime checks if a number is prime.
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 fib1 = 0
var fib2 = 1
var count = 0
while true {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
if count == n {
return fib
}
}
fib1 = fib2
fib2 = fib
}
}
// isPrime checks if a number is prime.
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
```func primeFib(n: Int) -> Int {
var fib1 = 0
var fib2 = 1
var count = 0
while true {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
if count == n {
return fib
}
}
fib1 = fib2
fib2 = fib
}
}
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 fib1 = 0
var fib2 = 1
var count = 0
while true {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
if count == n {
return fib
}
}
fib1 = fib2
fib2 = fib
}
}
// isPrime checks if a number is prime.
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
``````func primeFib(n: Int) -> Int {
var fib1 = 0
var fib2 = 1
var count = 0
while true {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
if count == n {
return fib
}
}
fib1 = fib2
fib2 = fib
}
}
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 fib1 = 0
var fib2 = 1
var count = 0
while true {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
if count == n {
return fib
}
}
fib1 = fib2
fib2 = fib
}
}
// isPrime checks if a number is prime.
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 fib1 = 0
var fib2 = 1
var count = 0
while true {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
if count == n {
return fib
}
}
fib1 = fib2
fib2 = fib
}
}
// isPrime checks if a number is prime.
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
```func primeFib(n: Int) -> Int {
var fib1 = 0
var fib2 = 1
var count = 0
while count < n {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
}
fib1 = fib2
fib2 = fib
}
return fib1
}
func isPrime(n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 fib1 = 0
var fib2 = 1
var count = 0
while count < n {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
}
fib1 = fib2
fib2 = fib
}
return fib1
}
// isPrime returns true if n is a prime number.
func isPrime(n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 fib1 = 0
var fib2 = 1
var count = 0
while count < n {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
}
fib1 = fib2
fib2 = fib
}
return fib1
}
// isPrime returns true if n is a prime number.
func isPrime(n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
```if isPrime(fib) { // missing argument label 'n:' in callfunc primeFib(n: Int) -> Int {
var fib1 = 0
var fib2 = 1
var count = 0
while count < n {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
}
fib1 = fib2
fib2 = fib
}
return fib1
}
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 fib1 = 0
var fib2 = 1
var count = 0
while count < n {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
}
fib1 = fib2
fib2 = fib
}
return fib1
}
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 fib1 = 0
var fib2 = 1
var count = 0
while count < n {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
}
fib1 = fib2
fib2 = fib
}
return fib1
}
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
``` // XCTAssertTrue failedfunc primeFib(n: Int) -> Int {
var fib = [2, 3]
var i = 2
while fib.count < n {
var a = fib[i-1]
var b = fib[i-2]
var c = a + b
while true {
var isPrime = true
for j in 2..<c {
if c % j == 0 {
isPrime = false
break
}
}
if isPrime {
fib.append(c)
break
}
c += 1
}
i += 1
}
return fib[n-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 fib = [2, 3]
var i = 2
while fib.count < n {
var a = fib[i-1]
var b = fib[i-2]
var c = a + b
while true {
var isPrime = true
for j in 2..<c {
if c % j == 0 {
isPrime = false
break
}
}
if isPrime {
fib.append(c)
break
}
c += 1
}
i += 1
}
return fib[n-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 fib = [2, 3]
var i = 2
while fib.count < n {
var a = fib[i-1]
var b = fib[i-2]
var c = a + b
while true {
var isPrime = true
for j in 2..<c {
if c % j == 0 {
isPrime = false
break
}
}
if isPrime {
fib.append(c)
break
}
c += 1
}
i += 1
}
return fib[n-1]
}
primeFib(n: 1)
```var a = fib[i-1] // variable 'a' was never mutated; consider changing to 'let' constantvar b = fib[i-2] // variable 'b' was never mutated; consider changing to 'let' constant // XCTAssertTrue failedfunc primeFib(n: Int) -> Int {
var fib1 = 0
var fib2 = 1
var count = 0
while count < n {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
}
fib1 = fib2
fib2 = fib
}
return fib1
}
func isPrime(_ num: Int) -> Bool {
if num < 2 {
return false
}
for i in 2..<num {
if num % 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 fib1 = 0
var fib2 = 1
var count = 0
while count < n {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
}
fib1 = fib2
fib2 = fib
}
return fib1
}
// isPrime checks if number is prime.
func isPrime(_ num: Int) -> Bool {
if num < 2 {
return false
}
for i in 2..<num {
if num % 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 fib1 = 0
var fib2 = 1
var count = 0
while count < n {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
}
fib1 = fib2
fib2 = fib
}
return fib1
}
// isPrime checks if number is prime.
func isPrime(_ num: Int) -> Bool {
if num < 2 {
return false
}
for i in 2..<num {
if num % i == 0 {
return false
}
}
return true
}
``` // XCTAssertTrue failedfunc primeFib(n: Int) -> Int {
var fib1 = 0
var fib2 = 1
var count = 0
while true {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
if count == n {
return fib
}
}
fib1 = fib2
fib2 = fib
}
}
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 fib1 = 0
var fib2 = 1
var count = 0
while true {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
if count == n {
return fib
}
}
fib1 = fib2
fib2 = fib
}
}
// isPrime checks if a number is prime.
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
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 fib1 = 0
var fib2 = 1
var count = 0
while true {
let fib = fib1 + fib2
if isPrime(fib) {
count += 1
if count == n {
return fib
}
}
fib1 = fib2
fib2 = fib
}
}
// isPrime checks if a number is prime.
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
```func triplesSumToZero(l: [Int]) -> Bool {
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 {
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 {
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
}
```func triplesSumToZero(l: [Int]) -> Bool {
if l.count < 3 {
return false
}
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 {
if l.count < 3 {
return false
}
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 {
if l.count < 3 {
return false
}
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
}
```func triplesSumToZero(l: [Int]) -> Bool {
var set = Set<Int>()
for i in 0..<l.count {
for j in i+1..<l.count {
let complement = -(l[i] + l[j])
if set.contains(complement) {
return true
}
set.insert(l[j])
}
}
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 set = Set<Int>()
for i in 0..<l.count {
for j in i+1..<l.count {
let complement = -(l[i] + l[j])
if set.contains(complement) {
return true
}
set.insert(l[j])
}
}
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 set = Set<Int>()
for i in 0..<l.count {
for j in i+1..<l.count {
let complement = -(l[i] + l[j])
if set.contains(complement) {
return true
}
set.insert(l[j])
}
}
return false
}
```func triplesSumToZero(l: [Int]) -> Bool {
if l.count < 3 {
return false
}
l.sort()
for i in 0..<l.count-2 {
if i > 0 && l[i] == l[i-1] {
continue
}
var left = i + 1
var right = l.count - 1
while left < right {
let sum = l[i] + l[left] + l[right]
if sum == 0 {
return true
} else if sum < 0 {
left += 1
} else {
right -= 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 {
if l.count < 3 {
return false
}
l.sort()
for i in 0..<l.count-2 {
if i > 0 && l[i] == l[i-1] {
continue
}
var left = i + 1
var right = l.count - 1
while left < right {
let sum = l[i] + l[left] + l[right]
if sum == 0 {
return true
} else if sum < 0 {
left += 1
} else {
right -= 1
}
}
}
return false
}
``````
```python
def triples_sum_to_zero(l):
if len(l) < 3:
return False
l.sort()
for i in range(len(l) - 2):
if i > 0 and l[i] == l[i-1]:
continue
left = i + 1
right = len(l) - 1
while left < right:
sum = l[i] + l[left] + l[right]
if sum == 0:
return True
elif sum < 0:
left += 1
else:
right -= 1
return False
```l.sort() // cannot use mutating member on immutable value: 'l' is a 'let' constantfunc triplesSumToZero(l: [Int]) -> Bool {
var set = Set<Int>()
for i in 0..<l.count {
for j in i+1..<l.count {
let complement = -(l[i] + l[j])
if set.contains(complement) {
return true
}
set.insert(l[j])
}
}
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 set = Set<Int>()
for i in 0..<l.count {
for j in i+1..<l.count {
let complement = -(l[i] + l[j])
if set.contains(complement) {
return true
}
set.insert(l[j])
}
}
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 set = Set<Int>()
for i in 0..<l.count {
for j in i+1..<l.count {
let complement = -(l[i] + l[j])
if set.contains(complement) {
return true
}
set.insert(l[j])
}
}
return false
}
```func triplesSumToZero(l: [Int]) -> Bool {
var set = Set<Int>()
for i in 0..<l.count {
for j in i+1..<l.count {
let complement = -(l[i] + l[j])
if set.contains(complement) {
return true
}
set.insert(l[j])
}
}
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 set = Set<Int>()
for i in 0..<l.count {
for j in i+1..<l.count {
let complement = -(l[i] + l[j])
if set.contains(complement) {
return true
}
set.insert(l[j])
}
}
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 set = Set<Int>()
for i in 0..<l.count {
for j in i+1..<l.count {
let complement = -(l[i] + l[j])
if set.contains(complement) {
return true
}
set.insert(l[j])
}
}
return false
}
```func triplesSumToZero(l: [Int]) -> Bool {
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 {
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 {
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
}
```func triplesSumToZero(l: [Int]) -> Bool {
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 {
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 {
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
}
```func triplesSumToZero(l: [Int]) -> Bool {
var set = Set<Int>()
for i in 0..<l.count {
for j in i+1..<l.count {
let complement = -(l[i] + l[j])
if set.contains(complement) {
return true
}
set.insert(l[j])
}
}
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 set = Set<Int>()
for i in 0..<l.count {
for j in i+1..<l.count {
let complement = -(l[i] + l[j])
if set.contains(complement) {
return true
}
set.insert(l[j])
}
}
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 set = Set<Int>()
for i in 0..<l.count {
for j in i+1..<l.count {
let complement = -(l[i] + l[j])
if set.contains(complement) {
return true
}
set.insert(l[j])
}
}
return false
}
```func triplesSumToZero(l: [Int]) -> Bool {
// sort the array
var arr = l.sorted()
// iterate through the array
for i in 0..<arr.count {
// initialize two pointers, one at the next index and one at the end of the array
var left = i + 1
var right = arr.count - 1
// while the left pointer is less than the right pointer
while left < right {
// calculate the sum of the current three elements
let sum = arr[i] + arr[left] + arr[right]
// if the sum is equal to zero, return true
if sum == 0 {
return true
}
// if the sum is less than zero, move the left pointer to the right
else if sum < 0 {
left += 1
}
// if the sum is greater than zero, move the right pointer to the left
else {
right -= 1
}
}
}
// if no three elements sum to zero, 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 {
// sort the array
var arr = l.sorted()
// iterate through the array
for i in 0..<arr.count {
// initialize two pointers, one at the next index and one at the end of the array
var left = i + 1
var right = arr.count - 1
// while the left pointer is less than the right pointer
while left < right {
// calculate the sum of the current three elements
let sum = arr[i] + arr[left] + arr[right]
// if the sum is equal to zero, return true
if sum == 0 {
return true
}
// if the sum is less than zero, move the left pointer to the right
else if sum < 0 {
left += 1
}
// if the sum is greater than zero, move the right pointer to the left
else {
right -= 1
}
}
}
// if no three elements sum to zero, return false
return false
}
``````
```python
def triples_sum_to_zero(l):
# sort the array
arr = sorted(l)
# iterate through the array
for i in range(len(arr)):
# initialize two pointers, one at the next index and one at the end of the array
left = i + 1
right = len(arr) - 1
# while the left pointer is less than the right pointer
while left < right:
# calculate the sum of the current three elements
sum = arr[i] + arr[left] + arr[right]
# if the sum is equal to zero, return True
if sum == 0:
return True
# if the sum is less than zero, move the left pointer to the right
elif sum < 0:
left += 1
# if the sum is greater than zero, move the right pointer to the left
else:
right -= 1
# if no three elements sum to zero, return False
return False
```var arr = l.sorted() // variable 'arr' was never mutated; consider changing to 'let' constantfunc carRaceCollision(n: Int) -> Int {
return n * (n - 1) / 2
}```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 {
return n * (n - 1) / 2
}
// Testing the function
print(carRaceCollision(n: 5)) // Expected output: 10
`````` // XCTAssertTrue failedfunc carRaceCollision(n: Int) -> Int {
return n * (n - 1) / 2
}```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 {
return n * (n - 1) / 2
}
// Test
print(carRaceCollision(n: 5)) // 10
print(carRaceCollision(n: 10)) // 45
``````
```python
# 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.
def carRaceCollision(n):
return n * (n - 1) // 2
# Test
print(carRaceCollision(5)) # 10
print(carRaceCollision(10)) # 45
``` // XCTAssertTrue failedfunc carRaceCollision(n: Int) -> Int {
return n * (n - 1) / 2
}```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 {
return n * (n - 1) / 2
}
// Testing the function
print(carRaceCollision(n: 5)) // Expected output: 10
print(carRaceCollision(n: 10)) // Expected output: 45
`````` // XCTAssertTrue failedfunc carRaceCollision(n: Int) -> Int {
// The number of collisions is equal to the number of cars moving left to right
// multiplied by the number of cars moving right to left.
return n * n
}```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 {
// The number of collisions is equal to the number of cars moving left to right
// multiplied by the number of cars moving right to left.
return n * n
}
// Test the function
carRaceCollision(n: 3)
``````func carRaceCollision(n: Int) -> Int {
return n * (n - 1) / 2
}```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 {
return n * (n - 1) / 2
}
// Test the function
print(carRaceCollision(n: 5)) // Expected output: 10
`````` // XCTAssertTrue failedfunc carRaceCollision(n: Int) -> Int {
return n * (n - 1) / 2
}```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 {
return n * (n - 1) / 2
}
// Test the function
print(carRaceCollision(n: 5)) // Expected output: 10
`````` // XCTAssertTrue failedfunc carRaceCollision(n: Int) -> Int {
return n * (n - 1) / 2
}```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 {
return n * (n - 1) / 2
}
// Test the function
carRaceCollision(n: 5) // 10
carRaceCollision(n: 10) // 45
`````` // XCTAssertTrue failedfunc carRaceCollision(n: Int) -> Int {
// The number of collisions is equal to the number of cars moving left to right
// multiplied by the number of cars moving right to left.
return n * n
}```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 {
// The number of collisions is equal to the number of cars moving left to right
// multiplied by the number of cars moving right to left.
return n * n
}
// Test the function
print(carRaceCollision(n: 3)) // Expected output: 9
``````func carRaceCollision(n: Int) -> Int {
return n * (n - 1) / 2
}```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 {
return n * (n - 1) / 2
}
// Test
print(carRaceCollision(n: 5)) // 10
``````
```python
def carRaceCollision(n):
return n * (n - 1) // 2
# Test
print(carRaceCollision(5)) # 10
``` // XCTAssertTrue failedfunc carRaceCollision(n: Int) -> Int {
return n * (n - 1) / 2
}```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 {
return n * (n - 1) / 2
}
// Test the function
carRaceCollision(n: 10)
`````` // XCTAssertTrue failedfunc 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 }
}
`````````swift
// Test cases
print(incrList(l: [1, 2, 3])) // [2, 3, 4]
print(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 }
}```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 }
}
`````````swift
// Test cases
print(incrList(l: [1, 2, 3])) // [2, 3, 4]
print(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 }
}```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 }
}
`````````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 }
}
// Test cases
print(incrList(l: [1, 2, 3])) // [2, 3, 4]
print(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 }
}```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 }
}
`````````swift
// Test cases
print(incrList(l: [1, 2, 3])) // [2, 3, 4]
print(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 }
}```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 }
}
`````````swift
// Testing the function
print(incrList(l: [1, 2, 3])) // Expected output: [2, 3, 4]
print(incrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123])) // Expected output: [6, 4, 6, 3, 4, 4, 10, 1, 124]
```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 }
}
`````````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 }
}
// Test cases
print(incrList(l: [1, 2, 3])) // [2, 3, 4]
print(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 }
}```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 }
}
`````````swift
// Test cases
print(incrList(l: [1, 2, 3])) // [2, 3, 4]
print(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 }
}```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 }
}
`````````swift
// Test cases
print(incrList(l: [1, 2, 3])) // [2, 3, 4]
print(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 }
}```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 }
}
`````````swift
// Test cases
print(incrList(l: [1, 2, 3])) // [2, 3, 4]
print(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 }
}```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 }
}
`````````swift
// Test cases
print(incrList(l: [1, 2, 3])) // [2, 3, 4]
print(incrList(l: [5, 3, 5, 2, 3, 3, 9, 0, 123])) // [6, 4, 6, 3, 4, 4, 10, 1, 124]
```func pairsSumToZero(l: [Int]) -> Bool {
var set = Set<Int>()
for num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
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 num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
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 num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
return false
}
```func pairsSumToZero(l: [Int]) -> Bool {
var set = Set<Int>()
for num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
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 num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
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 num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
return false
}
```func pairsSumToZero(l: [Int]) -> Bool {
var set = Set<Int>()
for num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
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 num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
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 num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
return false
}
```func pairsSumToZero(l: [Int]) -> Bool {
var set = Set<Int>()
for num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
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 num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
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 num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
return false
}
```func pairsSumToZero(l: [Int]) -> Bool {
var set = Set<Int>()
for num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
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 num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
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 num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
return false
}
```func pairsSumToZero(l: [Int]) -> Bool {
var set = Set<Int>()
for num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
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 num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
return false
}
``````
```swift
func pairsSumToZero(l: [Int]) -> Bool {
var set = Set<Int>()
for num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
return false
}
// Test cases
print(pairsSumToZero(l: [1, 3, 5, 0])) // false
print(pairsSumToZero(l: [1, 3, -2, 1])) // false
print(pairsSumToZero(l: [1, 2, 3, 7])) // false
print(pairsSumToZero(l: [2, 4, -5, 3, 5, 7])) // true
print(pairsSumToZero(l: [1])) // false
```func pairsSumToZero(l: [Int]) -> Bool {
var set = Set<Int>()
for num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
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 num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
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 num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
return false
}
```func pairsSumToZero(l: [Int]) -> Bool {
var set = Set<Int>()
for num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
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 num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
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 num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
return false
}
// Test cases
print(pairsSumToZero(l: [1, 3, 5, 0])) // false
print(pairsSumToZero(l: [1, 3, -2, 1])) // false
print(pairsSumToZero(l: [1, 2, 3, 7])) // false
print(pairsSumToZero(l: [2, 4, -5, 3, 5, 7])) // true
print(pairsSumToZero(l: [1])) // false
```func pairsSumToZero(l: [Int]) -> Bool {
var set = Set<Int>()
for num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
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 num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
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 num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
return false
}
```func pairsSumToZero(l: [Int]) -> Bool {
var set = Set<Int>()
for num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
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 num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
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 num in l {
if set.contains(-num) {
return true
}
set.insert(num)
}
return false
}
```func changeBase(x: Int, base: Int) -> String {
var result = ""
var num = x
while num > 0 {
result = String(num % base) + result
num /= base
}
return result
}
func changeBase(x: Int, base: Int) -> String {
guard base >= 2 && base <= 10 else {
return "Base must be between 2 and 10"
}
var result = ""
var num = x
while num > 0 {
result = String(num % base) + result
num /= 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 num = x
while num > 0 {
result = String(num % base) + result
num /= base
}
return result
}
func changeBase(x: Int, base: Int) -> String {
guard base >= 2 && base <= 10 else {
return "Base must be between 2 and 10"
}
var result = ""
var num = x
while num > 0 {
result = String(num % base) + result
num /= base
}
return result
}
func changeBase(x: Int, base: Int) -> String {
guard base >= 2 && base <= 10 else {
return "Base must be between 2 and 10"
}
var result = ""
var num = x
while num > 0 {
result = String(num % base) + result
num /= base
}
return result
}
func changeBase(x: Int, base: Int) -> String {
guard base >= 2 && base <= 10 else {
return "Base must be between 2 and 10"
}
var result = ""
var num = x
while num > 0 {
result = String(num % base) + result
num /= base
}
return result
}
func changeBase(x: Int, base: Int) -> String {
guard base >= 2 && base <= 10 else {
return "Base must be between 2 and 10"
}
var result = ""
var num = x
while num > 0 {
result = String(num % base) + result
num /= base
}
return result
}
func changeBase(x: Int, base: Int) -> String {
guard base >= 2 && base <= 10 else {
return "Base must be between 2 and 10"
}
var result = ""
var num = x
while num > 0 {
result = String(num % base) + result
num /= base
}
return result
}
func changeBase(x: Int, base: Int) -> String {
guard base >= 2 && base <= 10 else {
return "Base must be between 2 and 10"
}
var result = ""
var num = x
while num > 0 {
result = String(num % base) + result
num /= base
}
return result
}
func changeBase(x: Int, base: Int) -> String {
guard base >= 2 && base <= 10 else {
return "Base must be between 2 and 10"
}
var result = ""
var num = x
while num > 0 {
result = String(num % base) + result
num /= base
}
return result
}
func changeBase(x: Int, base: Int) -> String {
guard base >= 2 && base <= 10 else {
return "Base must be between 2 and 10"
}
var result = ""
var num = x
while num > 0 {
result = String(num % base) + result
num /= base
}
return result
}
func changeBase(x: Int, base: Int) -> String {
guard base >= 2 && base <= 10 else {
return "Base must be between 2 and 10"
}
var result = ""
var num = x
while num > 0 {
result = String(num % base) + result
num /= base
}
return result
}
func changeBase(x: Int, base: Int) -> String {
guard base >= 2 && base <= 10 else {
return "Base must be between 2 and 10"
}
var result = ""
var num = x
while num > 0 {
result = String(num % base) + result
num /= base
}
return result
}
func changeBase(x: Int, base: Int) -> String {
guard base >= 2 && base <= 1func changeBase(x: Int, base: Int) -> String { // invalid redeclaration of 'changeBase(x:base:)'func changeBase(x: Int, base: Int) -> String {
var result = ""
var num = x
while num > 0 {
result = String(num % base) + result
num /= base
}
return result
}
func testChangeBase() {
print(changeBase(x: 8, base: 3)) // expected output: "22"
print(changeBase(x: 8, base: 2)) // expected output: "1000"
print(changeBase(x: 7, base: 2)) // expected output: "111"
}```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 num = x
while num > 0 {
result = String(num % base) + result
num /= base
}
return result
}
func testChangeBase() {
print(changeBase(x: 8, base: 3)) // expected output: "22"
print(changeBase(x: 8, base: 2)) // expected output: "1000"
print(changeBase(x: 7, base: 2)) // expected output: "111"
}
testChangeBase()
``````func changeBase(x: Int, base: Int) -> String {
var result = ""
var number = x
while number > 0 {
result = String(number % base) + result
number /= 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 number = x
while number > 0 {
result = String(number % base) + result
number /= base
}
return result
}
changeBase(x: 8, base: 3)
changeBase(x: 8, base: 2)
changeBase(x: 7, base: 2)
``````
```python
def change_base(x, base):
result = ""
number = x
while number > 0:
result = str(number % base) + result
number //= base
return result
change_base(8, 3), change_base(8, 2), change_base(7, 2)
```func changeBase(x: Int, base: Int) -> String {
guard base >= 2 else { return String(x) }
var result = ""
var n = x
while n > 0 {
result = String(n % base) + result
n /= 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 {
guard base >= 2 else { return String(x) }
var result = ""
var n = x
while n > 0 {
result = String(n % base) + result
n /= 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 {
guard base >= 2 else { return String(x) }
var result = ""
var n = x
while n > 0 {
result = String(n % base) + result
n /= base
}
return result
}
// Test cases
print(changeBase(x: 8, base: 3)) // Output: "22"
print(changeBase(x: 8, base: 2)) // Output: "1000"
print(changeBase(x: 7, base: 2)) // Output: "111"
```func changeBase(x: Int, base: Int) -> String {
var result = ""
var number = x
while number > 0 {
result = String(number % base) + result
number /= 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 number = x
while number > 0 {
result = String(number % base) + result
number /= base
}
return result
}
changeBase(x: 8, base: 3)
changeBase(x: 8, base: 2)
changeBase(x: 7, base: 2)
``````func changeBase(x: Int, base: Int) -> String {
var result = ""
var num = x
while num > 0 {
result = String(num % base) + result
num /= 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 num = x
while num > 0 {
result = String(num % base) + result
num /= base
}
return result
}
changeBase(x: 8, base: 3)
changeBase(x: 8, base: 2)
changeBase(x: 7, base: 2)
``````func changeBase(x: Int, base: Int) -> String {
var result = ""
var num = x
while num > 0 {
result = String(num % base) + result
num /= 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 num = x
while num > 0 {
result = String(num % base) + result
num /= base
}
return result
}
changeBase(x: 8, base: 3)
changeBase(x: 8, base: 2)
changeBase(x: 7, base: 2)
``````func changeBase(x: Int, base: Int) -> String {
var result = ""
var number = x
while number > 0 {
result = String(number % base) + result
number /= 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 number = x
while number > 0 {
result = String(number % base) + result
number /= base
}
return result
}
changeBase(x: 8, base: 3)
changeBase(x: 8, base: 2)
changeBase(x: 7, base: 2)
``````func changeBase(x: Int, base: Int) -> String {
var result = ""
var num = x
while num > 0 {
result = String(num % base) + result
num /= 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 num = x
while num > 0 {
result = String(num % base) + result
num /= base
}
return result
}
changeBase(x: 8, base: 3)
changeBase(x: 8, base: 2)
changeBase(x: 7, base: 2)
``````
```python
def change_base(x, base):
result = ""
num = x
while num > 0:
result = str(num % base) + result
num //= base
return result
change_base(8, 3), change_base(8, 2), change_base(7, 2)
```func changeBase(x: Int, base: Int) -> String {
var result = ""
var number = x
while number > 0 {
result = String(number % base) + result
number /= 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 number = x
while number > 0 {
result = String(number % base) + result
number /= base
}
return result
}
changeBase(x: 8, base: 3)
changeBase(x: 8, base: 2)
changeBase(x: 7, base: 2)
``````func triangleArea(a: Int, h: Int) -> Double {
return Double(a) * Double(h) / 2
}
func polygonArea(s: Int, n: Int) -> Double {
return Double(s) * Double(n) / (4 * tan(Double(pi) / Double(n)))
}
func circleArea(r: Int) -> Double {
return Double(pi) * Double(r) * Double(r)
}
func squarePerimeter(a: Int) -> Int {
return 4 * a
}
func rectanglePerimeter(a: Int, h: Int) -> Int {
return 2 * (a + h)
}
func trianglePerimeter(a: Int, h: Int) -> Int {
return 3 * a
}
func polygonPerimeter(s: Int, n: Int) -> Int {
return n * s
}
func circleCircumference(r: Int) -> Double {
return 2 * Double(pi) * Double(r)
}
func squareArea(a: Int) -> Int {
return a * a
}
func rectangleArea(a: Int, h: Int) -> Int {
return a * h
}```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 length of a side and number of sides return area for a polygon.
// polygonArea(s: 5, n: 3) == 10.984847
func polygonArea(s: Int, n: Int) -> Double {
return Double(s) * Double(n) / (4 * tan(Double(pi) / Double(n)))
}
// Given radius return area for a circle.
// circleArea(r: 5) == 78.539816
func circleArea(r: Int) -> Double {
return Double(pi) * Double(r) * Double(r)
}
// Given length of a side return perimeter for a square.
// squarePerimeter(a: 5) == 20
func squarePerimeter(a: Int) -> Int {
return 4 * a
}
// Given length of a side and height return perimeter for a rectangle.
// rectanglePerimeter(a: 5, h: 3) == 16
func rectanglePerimeter(a: Int, h: Int) -> Int {
return 2 * (a + h)
}
// Given length of a side and height return perimeter for a triangle.
// trianglePerimeter(a: 5, h: 3) == 11
func trianglePerimeter(a: Int, h: Int) -> Int {
return 3 * a
}
// Given length of a side and number of sides return perimeter for a polygon.
// polygonPerimeter(s: 5, n: 3) == 15
func polygonPerimeter(s: Int, n: Int) -> Int {
return n * s
}
// Given radius return circumference for a circle.
// circleCircumference(r: 5) == 31.415927
func circleCircumference(r: Int) -> Double {
return 2 * Double(pi) * Double(r)
}
// Given length of a side return area for a square.
// squareArea(a: 5) == 25
func squareArea(a: Int) -> Int {
return a * a
}
// Given length of a side and height return area for a rectangle.
// rectangleArea(a: 5, h: 3) == 15
func rectangleArea(a: Int, h: Int) -> Int {
return a * h
}
// Given length of a side and height 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 length of a side and number of sides return area for a polygon.
// polygonArea(s: 5, n: 3) == 10.984847
func polygonArea(s: Int, n: Int) -> Double {
return Double(s) * Double(n) / (4 * tan(Double(pi) / Double(n)))
}
// Given radius return area for a circle.
// circleArea(r: 5) == 78.539816
func circleArea(r: Int) -> Double {
return Double(pi) * Double(r) * Double(r)
}
// Given length of a side return perimeter for a square.
// squarePerimeter(a: 5) == 20
func squarePerimeter(a: Int) -> Int {
return 4 * a
}
// Given length of a side and height return perimeter for a rectangle.
// rectanglePerimeter(a: 5, h: 3) == 16
func rectanglePerimeter(a: Int, h: Int) -> Int {
return 2 * (a + h)
}
// Given length of a side and height return perimeter for a triangle.
// trianglePerimeter(a: 5, h: 3) == 11
func trianglePerimeter(a: Int, h: Int) -> Int {
return 3 * a
}
// Given length of a side and number of sides return perimeter for a polygon.
// polygonPerimeter(s: 5,return Double(s) * Double(n) / (4 * tan(Double(pi) / Double(n))) // cannot find 'pi' in scopereturn Double(pi) * Double(r) * Double(r) // cannot find 'pi' in scopereturn 2 * Double(pi) * Double(r) // cannot find 'pi' in scopefunc triangleArea(a: Int, h: Int) -> Double {
return Double(a) * Double(h) / 2.0
}
func rectangleArea(a: Int, h: Int) -> Int {
return a * h
}
func squareArea(a: Int) -> Int {
return a * a
}
func trapezoidArea(a: Int, b: Int, h: Int) -> Double {
return (Double(a) + Double(b)) * Double(h) / 2.0
}
func regularPolygonArea(a: Int, n: Int) -> Double {
let pi = Double.pi
let apothem = a / (2 * tan(pi / Double(n)))
return Double(n) * Double(a) * apothem / 2.0
}
func circleArea(r: Int) -> Double {
let pi = Double.pi
return pi * Double(r) * Double(r)
}```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) / 2.0
}
// Given length of a side and high return area for a rectangle.
// rectangleArea(a: 5, h: 3) == 15
func rectangleArea(a: Int, h: Int) -> Int {
return a * h
}
// Given length of a side and high return area for a square.
// squareArea(a: 5) == 25
func squareArea(a: Int) -> Int {
return a * a
}
// Given length of a side and high return area for a trapezoid.
// trapezoidArea(a: 5, b: 3, h: 2) == 7.5
func trapezoidArea(a: Int, b: Int, h: Int) -> Double {
return (Double(a) + Double(b)) * Double(h) / 2.0
}
// Given length of a side and high return area for a regular polygon.
// regularPolygonArea(a: 5, n: 3) == 15.588
func regularPolygonArea(a: Int, n: Int) -> Double {
let pi = Double.pi
let apothem = a / (2 * tan(pi / Double(n)))
return Double(n) * Double(a) * apothem / 2.0
}
// Given length of a side and high return area for a circle.
// circleArea(r: 5) == 78.53981633974483
func circleArea(r: Int) -> Double {
let pi = Double.pi
return pi * Double(r) * Double(r)
}
`````````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) / 2.0
}
// Given length of a side and high return area for a rectangle.
// rectangleArea(a: 5, h: 3) == 15
func rectangleArea(a: Int, h: Int) -> Int {
return a * h
}
// Given length of a side and high return area for a square.
// squareArea(a: 5) == 25
func squareArea(a: Int) -> Int {
return a * a
}
// Given length of a side and high return area for a trapezoid.
// trapezoidArea(a: 5, b: 3, h: 2) == 7.5
func trapezoidArea(a: Int, b: Int, h: Int) -> Double {
return (Double(a) + Double(b)) * Double(h) / 2.0
}
// Given length of a side and high return area for a regular polygon.
// regularPolygonArea(a: 5, n: 3) == 15.588
func regularPolygonArea(a: Int, n: Int) -> Double {
let pi = Double.pi
let apothem = a / (2 * tan(pi / Double(n)))
return Double(n) * Double(a) * apothem / 2.0
}
// Given length of a side and high return area for a circle.
// circleArea(r: 5) == 78.53981633974483
func circleArea(r: Int) -> Double {
let pi = Double.pi
return pi * Double(r) * Double(r)
}
```let apothem = a / (2 * tan(pi / Double(n))) // cannot convert value of type 'Double' to expected argument type 'Int'func triangleArea(a: Int, h: Int) -> Double {
return Double(a) * Double(h) / 2
}
func squareArea(a: Int) -> Int {
return a * a
}
func circleArea(r: Double) -> Double {
return Double.pi * r * r
}
func trianglePerimeter(a: Int, h: Int) -> Int {
return 2 * a + h
}
func squarePerimeter(a: Int) -> Int {
return 4 * a
}
func circleCircumference(r: Double) -> Double {
return 2 * Double.pi * r
}```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 length of a side return area for a square.
// squareArea(a: 5) == 25
func squareArea(a: Int) -> Int {
return a * a
}
// Given radius return area for a circle.
// circleArea(r: 5) == 78.53981633974483
func circleArea(r: Double) -> Double {
return Double.pi * r * r
}
// Given length of a side and high return perimeter for a triangle.
// trianglePerimeter(a: 5, h: 3) == 11
func trianglePerimeter(a: Int, h: Int) -> Int {
return 2 * a + h
}
// Given length of a side return perimeter for a square.
// squarePerimeter(a: 5) == 20
func squarePerimeter(a: Int) -> Int {
return 4 * a
}
// Given radius return circumference for a circle.
// circleCircumference(r: 5) == 31.41592653589793
func circleCircumference(r: Double) -> Double {
return 2 * Double.pi * r
}
``````func triangleArea(a: Int, h: Int) -> Double {
return Double(a) * Double(h) / 2.0
}
func rectangleArea(a: Int, h: Int) -> Int {
return a * h
}
func squareArea(a: Int) -> Int {
return a * a
}
func trapezoidArea(a: Int, b: Int, h: Int) -> Double {
return Double(a + b) / 2.0 * Double(h)
}
func circleArea(r: Int) -> Double {
return Double.pi * Double(r) * Double(r)
}```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) / 2.0
}
// Given length of a side and high return area for a rectangle.
// rectangleArea(a: 5, h: 3) == 15
func rectangleArea(a: Int, h: Int) -> Int {
return a * h
}
// Given length of a side and high return area for a square.
// squareArea(a: 5) == 25
func squareArea(a: Int) -> Int {
return a * a
}
// Given length of a side and high return area for a trapezoid.
// trapezoidArea(a: 5, b: 3, h: 2) == 12.5
func trapezoidArea(a: Int, b: Int, h: Int) -> Double {
return Double(a + b) / 2.0 * Double(h)
}
// Given length of a side and high return area for a circle.
// circleArea(r: 5) == 78.53981633974483
func circleArea(r: Int) -> Double {
return Double.pi * Double(r) * Double(r)
}
`````````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) / 2.0
}
// Given length of a side and high return area for a rectangle.
// rectangleArea(a: 5, h: 3) == 15
func rectangleArea(a: Int, h: Int) -> Int {
return a * h
}
// Given length of a side and high return area for a square.
// squareArea(a: 5) == 25
func squareArea(a: Int) -> Int {
return a * a
}
// Given length of a side and high return area for a trapezoid.
// trapezoidArea(a: 5, b: 3, h: 2) == 12.5
func trapezoidArea(a: Int, b: Int, h: Int) -> Double {
return Double(a + b) / 2.0 * Double(h)
}
// Given length of a side and high return area for a circle.
// circleArea(r: 5) == 78.53981633974483
func circleArea(r: Int) -> Double {
return Double.pi * Double(r) * Double(r)
}
```func triangleArea(a: Int, h: Int) -> Double {
return Double(a) * Double(h) / 2
}
func circleArea(r: Int) -> Double {
return Double(r) * Double(r) * 3.141592653589793
}
func squareArea(a: Int) -> Int {
return a * a
}
func rectangleArea(a: Int, h: Int) -> Int {
return a * h
}
func trapezoidArea(a: Int, b: Int, h: Int) -> Int {
return (a + b) / 2 * h
}```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 radius return area for a circle.
// circleArea(r: 5) == 78.53981633974483
func circleArea(r: Int) -> Double {
return Double(r) * Double(r) * 3.141592653589793
}
// Given length of a side return area for a square.
// squareArea(a: 5) == 25
func squareArea(a: Int) -> Int {
return a * a
}
// Given length of a side and height return area for a rectangle.
// rectangleArea(a: 5, h: 3) == 15
func rectangleArea(a: Int, h: Int) -> Int {
return a * h
}
// Given length of a side and height return area for a trapezoid.
// trapezoidArea(a: 5, b: 3, h: 2) == 12
func trapezoidArea(a: Int, b: Int, h: Int) -> Int {
return (a + b) / 2 * h
}
``````
```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 radius return area for a circle.
// circleArea(r: 5) == 78.53981633974483
func circleArea(r: Int) -> Double {
return Double(r) * Double(r) * 3.141592653589793
}
// Given length of a side return area for a square.
// squareArea(a: 5) == 25
func squareArea(a: Int) -> Int {
return a * a
}
// Given length of a side and height return area for a rectangle.
// rectangleArea(a: 5, h: 3) == 15
func rectangleArea(a: Int, h: Int) -> Int {
return a * h
}
// Given length of a side and height return area for a trapezoid.
// trapezoidArea(a: 5, b: 3, h: 2) == 12
func trapezoidArea(a: Int, b: Int, h: Int) -> Int {
return (a + b) / 2 * h
}
```func triangleArea(a: Int, h: Int) -> Double {
return Double(a) * Double(h) / 2.0
}
func squareArea(a: Int) -> Int {
return a * a
}
func rectangleArea(a: Int, b: Int) -> Int {
return a * b
}
func trapezoidArea(a: Int, b: Int, h: Int) -> Double {
return Double(a + b) * Double(h) / 2.0
}
func circleArea(r: Int) -> Double {
return Double.pi * Double(r) * Double(r)
}```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) / 2.0
}
// Given length of a side return area for a square.
// squareArea(a: 5) == 25
func squareArea(a: Int) -> Int {
return a * a
}
// Given length of a side return area for a rectangle.
// rectangleArea(a: 5, b: 3) == 15
func rectangleArea(a: Int, b: Int) -> Int {
return a * b
}
// Given length of a side and high return area for a trapezoid.
// trapezoidArea(a: 5, b: 3, h: 2) == 7.5
func trapezoidArea(a: Int, b: Int, h: Int) -> Double {
return Double(a + b) * Double(h) / 2.0
}
// Given radius return area for a circle.
// circleArea(r: 5) == 78.53981633974483
func circleArea(r: Int) -> Double {
return Double.pi * Double(r) * Double(r)
}
``````func triangleArea(a: Int, h: Int) -> Double {
return Double(a) * Double(h) / 2.0
}
func squareArea(a: Int) -> Int {
return a * a
}
func rectangleArea(a: Int, h: Int) -> Int {
return a * h
}
func circleArea(r: Double) -> Double {
return Double.pi * r * r
}
func prismVolume(a: Int, h: Int) -> Double {
return Double(a) * Double(a) * Double(h)
}
func boxVolume(a: Int, h: Int) -> Double {
return Double(a) * Double(a) * Double(h)
}
func cylinderVolume(a: Int, h: Int) -> Double {
return Double.pi * Double(a) * Double(a) * Double(h)
}
func coneVolume(r: Double, h: Double) -> Double {
return Double.pi * r * r * h / 3.0
}```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) / 2.0
}
// Given length of a side return area for a square.
// squareArea(a: 5) == 25
func squareArea(a: Int) -> Int {
return a * a
}
// Given length of a side and height return area for a rectangle.
// rectangleArea(a: 5, h: 3) == 15
func rectangleArea(a: Int, h: Int) -> Int {
return a * h
}
// Given radius return area for a circle.
// circleArea(r: 5) == 78.53981633974483
func circleArea(r: Double) -> Double {
return Double.pi * r * r
}
// Given length of a side and height return volume for a prism.
// prismVolume(a: 5, h: 3) == 25.0
func prismVolume(a: Int, h: Int) -> Double {
return Double(a) * Double(a) * Double(h)
}
// Given length of a side and height return volume for a box.
// boxVolume(a: 5, h: 3) == 37.5
func boxVolume(a: Int, h: Int) -> Double {
return Double(a) * Double(a) * Double(h)
}
// Given length of a side and height return volume for a cylinder.
// cylinderVolume(a: 5, h: 3) == 37.5
func cylinderVolume(a: Int, h: Int) -> Double {
return Double.pi * Double(a) * Double(a) * Double(h)
}
// Given radius and height return volume for a cone.
// coneVolume(r: 5, h: 3) == 47.12388980384689
func coneVolume(r: Double, h: Double) -> Double {
return Double.pi * r * r * h / 3.0
}
``````func triangleArea(a: Int, h: Int) -> Double {
return Double(a) * Double(h) / 2
}
func triangleArea(a: Double, h: Double) -> Double {
return Double(a) * Double(h) / 2
}
func rectangleArea(b: Int, h: Int) -> Int {
return b * h
}
func rectangleArea(b: Double, h: Double) -> Double {
return Double(b) * Double(h)
}
func circleArea(r: Int) -> Double {
return Double(r) * Double(r) * Double.pi
}
func circleArea(r: Double) -> Double {
return Double(r) * Double(r) * Double.pi
}```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 length of a side and high return area for a triangle.
// triangleArea(a: 5, h: 3) == 7.5
func triangleArea(a: Double, h: Double) -> Double {
return Double(a) * Double(h) / 2
}
// Given base and height return area for a rectangle.
// rectangleArea(b: 5, h: 3) == 15
func rectangleArea(b: Int, h: Int) -> Int {
return b * h
}
// Given base and height return area for a rectangle.
// rectangleArea(b: 5, h: 3) == 15
func rectangleArea(b: Double, h: Double) -> Double {
return Double(b) * Double(h)
}
// Given radius return area for a circle.
// circleArea(r: 5) == 78.53981633974483
func circleArea(r: Int) -> Double {
return Double(r) * Double(r) * Double.pi
}
// Given radius return area for a circle.
// circleArea(r: 5) == 78.53981633974483
func circleArea(r: Double) -> Double {
return Double(r) * Double(r) * Double.pi
}
``````
```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 length of a side and high return area for a triangle.
// triangleArea(a: 5, h: 3) == 7.5
func triangleArea(a: Double, h: Double) -> Double {
return Double(a) * Double(h) / 2
}
// Given base and height return area for a rectangle.
// rectangleArea(b: 5, h: 3) == 15
func rectangleArea(b: Int, h: Int) -> Int {
return b * h
}
// Given base and height return area for a rectangle.
// rectangleArea(b: 5, h: 3) == 15
func rectangleArea(b: Double, h: Double) -> Double {
return Double(b) * Double(h)
}
// Given radius return area for a circle.
// circleArea(r: 5) == 78.53981633974483
func circleArea(r: Int) -> Double {
return Double(r) * Double(r) * Double.pi
}
// Given radius return area for a circle.
// circleArea(r: 5) == 78.53981633974483
func circleArea(r: Double) -> Double {
return Double(r) * Double(r) * Double.pi
}
```func triangleArea(a: Int, h: Int) -> Double {
return Double(a) * Double(h) / 2
}
func triangleArea(a: Double, h: Double) -> Double {
return Double(a) * Double(h) / 2
}
func triangleArea(a: Float, h: Float) -> Float {
return Float(a) * Float(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
}
// Given length of a side and high return area for a triangle.
// triangleArea(a: 5, h: 3) == 7.5
func triangleArea(a: Double, h: Double) -> Double {
return Double(a) * Double(h) / 2
}
// Given length of a side and high return area for a triangle.
// triangleArea(a: 5, h: 3) == 7.5
func triangleArea(a: Float, h: Float) -> Float {
return Float(a) * Float(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
}
// Given length of a side and high return area for a triangle.
// triangleArea(a: 5, h: 3) == 7.5
func triangleArea(a: Double, h: Double) -> Double {
return Double(a) * Double(h) / 2
}
// Given length of a side and high return area for a triangle.
// triangleArea(a: 5, h: 3) == 7.5
func triangleArea(a: Float, h: Float) -> Float {
return Float(a) * Float(h) / 2
}
```func triangleArea(a: Int, h: Int) -> Double {
return Double(a) * Double(h) / 2
}
func squareArea(a: Int) -> Int {
return a * a
}
func rectangleArea(a: Int, h: Int) -> Int {
return a * h
}
func circleArea(r: Double) -> Double {
return Double.pi * r * r
}
func trianglePerimeter(a: Int, h: Int) -> Int {
return 2 * a + h
}
func squarePerimeter(a: Int) -> Int {
return 4 * a
}
func rectanglePerimeter(a: Int, h: Int) -> Int {
return 2 * (a + h)
}
func circleCircumference(r: Double) -> Double {
return 2 * Double.pi * r
}```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 length of a side return area for a square.
// squareArea(a: 5) == 25
func squareArea(a: Int) -> Int {
return a * a
}
// Given length of a side and height return area for a rectangle.
// rectangleArea(a: 5, h: 3) == 15
func rectangleArea(a: Int, h: Int) -> Int {
return a * h
}
// Given radius return area for a circle.
// circleArea(r: 5) == 78.53981633974483
func circleArea(r: Double) -> Double {
return Double.pi * r * r
}
// Given length of a side and high return perimeter for a triangle.
// trianglePerimeter(a: 5, h: 3) == 11
func trianglePerimeter(a: Int, h: Int) -> Int {
return 2 * a + h
}
// Given length of a side return perimeter for a square.
// squarePerimeter(a: 5) == 20
func squarePerimeter(a: Int) -> Int {
return 4 * a
}
// Given length of a side and height return perimeter for a rectangle.
// rectanglePerimeter(a: 5, h: 3) == 16
func rectanglePerimeter(a: Int, h: Int) -> Int {
return 2 * (a + h)
}
// Given radius return circumference for a circle.
// circleCircumference(r: 5) == 31.41592653589793
func circleCircumference(r: Double) -> Double {
return 2 * Double.pi * r
}
`````````python
# Given length of a side and high return area for a triangle.
# triangleArea(a: 5, h: 3) == 7.5
def triangleArea(a: int, h: int) -> float:
return float(a) * float(h) / 2
# Given length of a side return area for a square.
# squareArea(a: 5) == 25
def squareArea(a: int) -> int:
return a * a
# Given length of a side and height return area for a rectangle.
# rectangleArea(a: 5, h: 3) == 15
def rectangleArea(a: int, h: int) -> int:
return a * h
# Given radius return area for a circle.
# circleArea(r: 5) == 78.53981633974483
def circleArea(r: float) -> float:
return 3.141592653589793 * r * r
# Given length of a side and high return perimeter for a triangle.
# trianglePerimeter(a: 5, h: 3) == 11
def trianglePerimeter(a: int, h: int) -> int:
return 2 * a + h
# Given length of a side return perimeter for a square.
# squarePerimeter(a: 5) == 20
def squarePerimeter(a: int) -> int:
return 4 * a
# Given length of a side and height return perimeter for a rectangle.
# rectanglePerimeter(a: 5, h: 3) == 16
def rectanglePerimeter(a: int, h: int) -> int:
return 2 * (a + h)
# Given radius return circumference for a circle.
# circleCircumference(r: 5) == 31.41592653589793
def circleCircumference(r: float) -> float:
return 2 * 3.141592653589793 * r
```func fib4(n: Int) -> Int {
if n < 4 {
return n == 3 ? 0 : n
}
var fib4_n_minus_4 = 0
var fib4_n_minus_3 = 0
var fib4_n_minus_2 = 2
var fib4_n_minus_1 = 0
var fib4_n = 0
for _ in 4...n {
fib4_n = fib4_n_minus_1 + fib4_n_minus_2 + fib4_n_minus_3 + fib4_n_minus_4
fib4_n_minus_4 = fib4_n_minus_3
fib4_n_minus_3 = fib4_n_minus_2
fib4_n_minus_2 = fib4_n_minus_1
fib4_n_minus_1 = fib4_n
}
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 < 4 {
return n == 3 ? 0 : n
}
var fib4_n_minus_4 = 0
var fib4_n_minus_3 = 0
var fib4_n_minus_2 = 2
var fib4_n_minus_1 = 0
var fib4_n = 0
for _ in 4...n {
fib4_n = fib4_n_minus_1 + fib4_n_minus_2 + fib4_n_minus_3 + fib4_n_minus_4
fib4_n_minus_4 = fib4_n_minus_3
fib4_n_minus_3 = fib4_n_minus_2
fib4_n_minus_2 = fib4_n_minus_1
fib4_n_minus_1 = fib4_n
}
return fib4_n
}
print(fib4(n: 5))
print(fib4(n: 6))
print(fib4(n: 7))
``````func fib4(n: Int) -> Int {
if n < 4 {
return n == 3 ? 0 : n
}
var fib4 = [0, 0, 2, 0]
for i in 4...n {
let next = fib4[3] + fib4[2] + fib4[1] + fib4[0]
fib4.removeFirst()
fib4.append(next)
}
return fib4.last() ?? 0
}```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 < 4 {
return n == 3 ? 0 : n
}
var fib4 = [0, 0, 2, 0]
for i in 4...n {
let next = fib4[3] + fib4[2] + fib4[1] + fib4[0]
fib4.removeFirst()
fib4.append(next)
}
return fib4.last() ?? 0
}
fib4(n: 5)
fib4(n: 6)
fib4(n: 7)
`````````python
def fib4(n):
if n < 4:
return n if n == 3 else n
fib4 = [0, 0, 2, 0]
for i in range(4, n+1):
next = fib4[3] + fib4[2] + fib4[1] + fib4[0]
fib4.pop(0)
fib4.append(next)
return fib4[-1]
fib4(5), fib4(6), fib4(7)
```return fib4.last() ?? 0 // cannot call value of non-function type 'Int?'func fib4(n: Int) -> Int {
if n <= 3 {
return n == 3 ? 2 : 0
}
var fib4_n_minus_4 = 0
var fib4_n_minus_3 = 0
var fib4_n_minus_2 = 2
var fib4_n_minus_1 = 0
var fib4_n = 0
for _ in 4...n {
fib4_n = fib4_n_minus_1 + fib4_n_minus_2 + fib4_n_minus_3 + fib4_n_minus_4
fib4_n_minus_4 = fib4_n_minus_3
fib4_n_minus_3 = fib4_n_minus_2
fib4_n_minus_2 = fib4_n_minus_1
fib4_n_minus_1 = fib4_n
}
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 <= 3 {
return n == 3 ? 2 : 0
}
var fib4_n_minus_4 = 0
var fib4_n_minus_3 = 0
var fib4_n_minus_2 = 2
var fib4_n_minus_1 = 0
var fib4_n = 0
for _ in 4...n {
fib4_n = fib4_n_minus_1 + fib4_n_minus_2 + fib4_n_minus_3 + fib4_n_minus_4
fib4_n_minus_4 = fib4_n_minus_3
fib4_n_minus_3 = fib4_n_minus_2
fib4_n_minus_2 = fib4_n_minus_1
fib4_n_minus_1 = fib4_n
}
return fib4_n
}
fib4(n: 5)
fib4(n: 6)
fib4(n: 7)
``````
```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 <= 3 {
return n == 3 ? 2 : 0
}
var fib4_n_minus_4 = 0
var fib4_n_minus_3 = 0
var fib4_n_minus_2 = 2
var fib4_n_minus_1 = 0
var fib4_n = 0
for _ in 4...n {
fib4_n = fib4_n_minus_1 + fib4_n_minus_2 + fib4_n_minus_3 + fib4_n_minus_4
fib4_n_minus_4 = fib4_n_minus_3
fib4_n_minus_3 = fib4_n_minus_2
fib4_n_minus_2 = fib4_n_minus_1
fib4_n_minus_1 = fib4_n
}
return fib4_n
}
fib4(n: 5)
fib4(n: 6)
fib4(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 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 {
if n == 0 {
return 0
}
if n == 1 {
return 0
}
if n == 2 {
return 2
}
if n == 3 {
return 0
}
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]
}
fib4(n: 5)
``````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
var fib4_1 = 0
var fib4_2 = 2
var fib4_3 = 0
var fib4_n = 0
for _ in 4...n {
fib4_n = fib4_0 + fib4_1 + fib4_2 + fib4_3
fib4_0 = fib4_1
fib4_1 = fib4_2
fib4_2 = fib4_3
fib4_3 = fib4_n
}
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
var fib4_1 = 0
var fib4_2 = 2
var fib4_3 = 0
var fib4_n = 0
for _ in 4...n {
fib4_n = fib4_0 + fib4_1 + fib4_2 + fib4_3
fib4_0 = fib4_1
fib4_1 = fib4_2
fib4_2 = fib4_3
fib4_3 = fib4_n
}
return fib4_n
}
print(fib4(n: 5)) // 4
print(fib4(n: 6)) // 8
print(fib4(n: 7)) // 14
`````````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
var fib4_1 = 0
var fib4_2 = 2
var fib4_3 = 0
var fib4_n = 0
for _ in 4...n {
fib4_n = fib4_0 + fib4_1 + fib4_2 + fib4_3
fib4_0 = fib4_1
fib4_1 = fib4_2
fib4_2 = fib4_3
fib4_3 = fib4_n
}
return fib4_n
}
print(fib4(n: 5)) // 4
print(fib4(n: 6)) // 8
print(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_n_minus_4 = 0
var fib4_n_minus_3 = 0
var fib4_n_minus_2 = 2
var fib4_n_minus_1 = 0
var fib4_n = 0
for i in 4...n {
fib4_n = fib4_n_minus_1 + fib4_n_minus_2 + fib4_n_minus_3 + fib4_n_minus_4
fib4_n_minus_4 = fib4_n_minus_3
fib4_n_minus_3 = fib4_n_minus_2
fib4_n_minus_2 = fib4_n_minus_1
fib4_n_minus_1 = fib4_n
}
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_n_minus_4 = 0
var fib4_n_minus_3 = 0
var fib4_n_minus_2 = 2
var fib4_n_minus_1 = 0
var fib4_n = 0
for i in 4...n {
fib4_n = fib4_n_minus_1 + fib4_n_minus_2 + fib4_n_minus_3 + fib4_n_minus_4
fib4_n_minus_4 = fib4_n_minus_3
fib4_n_minus_3 = fib4_n_minus_2
fib4_n_minus_2 = fib4_n_minus_1
fib4_n_minus_1 = fib4_n
}
return fib4_n
}
print(fib4(n: 5))
print(fib4(n: 6))
print(fib4(n: 7))
``````for i in 4...n { // immutable value 'i' was never used; consider replacing with '_' or removing itfunc fib4(n: Int) -> Int {
if n <= 3 {
return n == 3 ? 2 : 0
}
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 {
if n <= 3 {
return n == 3 ? 2 : 0
}
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]
}
print(fib4(n: 5))
print(fib4(n: 6))
print(fib4(n: 7))
``````
```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 <= 3 {
return n == 3 ? 2 : 0
}
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]
}
print(fib4(n: 5))
print(fib4(n: 6))
print(fib4(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 fib4_0 = 0
var fib4_1 = 0
var fib4_2 = 2
var fib4_3 = 0
var fib4_n = 0
for _ in 4...n {
fib4_n = fib4_3 + fib4_2 + fib4_1 + fib4_0
fib4_0 = fib4_1
fib4_1 = fib4_2
fib4_2 = fib4_3
fib4_3 = fib4_n
}
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
var fib4_1 = 0
var fib4_2 = 2
var fib4_3 = 0
var fib4_n = 0
for _ in 4...n {
fib4_n = fib4_3 + fib4_2 + fib4_1 + fib4_0
fib4_0 = fib4_1
fib4_1 = fib4_2
fib4_2 = fib4_3
fib4_3 = fib4_n
}
return fib4_n
}
fib4(n: 5)
fib4(n: 6)
fib4(n: 7)
`````````python
def fib4(n):
if n <= 0:
return 0
if n == 1:
return 0
if n == 2:
return 2
if n == 3:
return 0
fib4_0 = 0
fib4_1 = 0
fib4_2 = 2
fib4_3 = 0
fib4_n = 0
for _ in range(4, n+1):
fib4_n = fib4_3 + fib4_2 + fib4_1 + fib4_0
fib4_0 = fib4_1
fib4_1 = fib4_2
fib4_2 = fib4_3
fib4_3 = fib4_n
return fib4_n
fib4(5)
```func fib4(n: Int) -> Int {
if n <= 3 {
return n == 3 ? 2 : 0
}
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 {
if n <= 3 {
return n == 3 ? 2 : 0
}
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]
}
print(fib4(n: 5)) // 4
print(fib4(n: 6)) // 8
print(fib4(n: 7)) // 14
``````func fib4(n: Int) -> Int {
if n == 0 || n == 1 {
return 0
}
if n == 2 {
return 2
}
if n == 3 {
return 0
}
var fib4_n_minus_4 = 0
var fib4_n_minus_3 = 0
var fib4_n_minus_2 = 2
var fib4_n_minus_1 = 0
var fib4_n = 0
for _ in 4...n {
fib4_n = fib4_n_minus_1 + fib4_n_minus_2 + fib4_n_minus_3 + fib4_n_minus_4
fib4_n_minus_4 = fib4_n_minus_3
fib4_n_minus_3 = fib4_n_minus_2
fib4_n_minus_2 = fib4_n_minus_1
fib4_n_minus_1 = fib4_n
}
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 || n == 1 {
return 0
}
if n == 2 {
return 2
}
if n == 3 {
return 0
}
var fib4_n_minus_4 = 0
var fib4_n_minus_3 = 0
var fib4_n_minus_2 = 2
var fib4_n_minus_1 = 0
var fib4_n = 0
for _ in 4...n {
fib4_n = fib4_n_minus_1 + fib4_n_minus_2 + fib4_n_minus_3 + fib4_n_minus_4
fib4_n_minus_4 = fib4_n_minus_3
fib4_n_minus_3 = fib4_n_minus_2
fib4_n_minus_2 = fib4_n_minus_1
fib4_n_minus_1 = fib4_n
}
return fib4_n
}
print(fib4(n: 5)) // 4
print(fib4(n: 6)) // 8
print(fib4(n: 7)) // 14
`````````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 || n == 1 {
return 0
}
if n == 2 {
return 2
}
if n == 3 {
return 0
}
var fib4_n_minus_4 = 0
var fib4_n_minus_3 = 0
var fib4_n_minus_2 = 2
var fib4_n_minus_1 = 0
var fib4_n = 0
for _ in 4...n {
fib4_n = fib4_n_minus_1 + fib4_n_minus_2 + fib4_n_minus_3 + fib4_n_minus_4
fib4_n_minus_4 = fib4_n_minus_3
fib4_n_minus_3 = fib4_n_minus_2
fib4_n_minus_2 = fib4_n_minus_1
fib4_n_minus_1 = fib4_n
}
return fib4_n
}
print(fib4(n: 5)) // 4
print(fib4(n: 6)) // 8
print(fib4(n: 7)) // 14
```func median(l: [Int]) -> Double {
var sorted = l.sorted()
if sorted.count % 2 == 0 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}```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 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}
`````````swift
// Test cases
print(median(l: [3, 1, 2, 4, 5])) // 3.0
print(median(l: [-10, 4, 6, 1000, 10, 20])) // 15.0
print(median(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10])) // 5.5
print(median(l: [10, 2, 3, 4, 5, 6, 7, 8, 9, 1])) // 5.5
print(median(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11])) // 6.0
```var sorted = l.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constantfunc median(l: [Int]) -> Double {
var sorted = l.sorted()
if sorted.count % 2 == 0 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}```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 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}
``````
```python
def median(l):
sorted_l = sorted(l)
if len(sorted_l) % 2 == 0:
mid_index = len(sorted_l) // 2
return (sorted_l[mid_index - 1] + sorted_l[mid_index]) / 2
else:
mid_index = len(sorted_l) // 2
return sorted_l[mid_index]
print(median([3, 1, 2, 4, 5]))
print(median([-10, 4, 6, 1000, 10, 20]))
```var sorted = l.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constantfunc median(l: [Int]) -> Double {
var sorted = l.sorted()
if sorted.count % 2 == 0 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2.0
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}```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 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2.0
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}
print(median(l: [3, 1, 2, 4, 5]))
print(median(l: [-10, 4, 6, 1000, 10, 20]))
``````
```python
def median(l):
sorted_l = sorted(l)
if len(sorted_l) % 2 == 0:
mid_index = len(sorted_l) // 2
return (sorted_l[mid_index - 1] + sorted_l[mid_index]) / 2.0
else:
mid_index = len(sorted_l) // 2
return sorted_l[mid_index]
print(median([3, 1, 2, 4, 5]))
print(median([-10, 4, 6, 1000, 10, 20]))
```var sorted = l.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constantfunc median(l: [Int]) -> Double {
var sorted = l.sorted()
if sorted.count % 2 == 1 {
return Double(sorted[sorted.count / 2])
} else {
let midIndex = sorted.count / 2
return (Double(sorted[midIndex - 1]) + Double(sorted[midIndex])) / 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 {
var sorted = l.sorted()
if sorted.count % 2 == 1 {
return Double(sorted[sorted.count / 2])
} else {
let midIndex = sorted.count / 2
return (Double(sorted[midIndex - 1]) + Double(sorted[midIndex])) / 2.0
}
}
`````````swift
// Test cases
print(median(l: [3, 1, 2, 4, 5])) // 3.0
print(median(l: [-10, 4, 6, 1000, 10, 20])) // 15.0
print(median(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10])) // 5.5
print(median(l: [10, 2, 3, 4, 5, 6, 7, 8, 9, 1])) // 5.5
print(median(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11])) // 6.0
```var sorted = l.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constantfunc median(l: [Int]) -> Double {
var sorted = l.sorted()
if sorted.count % 2 == 0 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2.0
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}```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 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2.0
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}
median(l: [3, 1, 2, 4, 5])
median(l: [-10, 4, 6, 1000, 10, 20])
``````var sorted = l.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constantfunc median(l: [Int]) -> Double {
var sorted = l.sorted()
if sorted.count % 2 == 0 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2.0
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}```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 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2.0
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}
`````````swift
// Test cases
print(median(l: [3, 1, 2, 4, 5])) // 3.0
print(median(l: [-10, 4, 6, 1000, 10, 20])) // 15.0
print(median(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10])) // 5.5
print(median(l: [10, 2, 3, 4, 5, 6, 7, 8, 9, 1])) // 5.5
print(median(l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11])) // 6.0
```var sorted = l.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constantfunc median(l: [Int]) -> Double {
var sorted = l.sorted()
if sorted.count % 2 == 0 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}```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 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}
``````
```python
# Return median of elements in the array l.
# median([3, 1, 2, 4, 5]) == 3
# median([-10, 4, 6, 1000, 10, 20]) == 15.0
def median(l):
sorted_l = sorted(l)
if len(sorted_l) % 2 == 0:
mid_index = len(sorted_l) // 2
return (sorted_l[mid_index - 1] + sorted_l[mid_index]) / 2
else:
mid_index = len(sorted_l) // 2
return sorted_l[mid_index]
```var sorted = l.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constantfunc median(l: [Int]) -> Double {
var sorted = l.sorted()
if sorted.count % 2 == 0 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}```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 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}
``````
```python
# Return median of elements in the array l.
# median([3, 1, 2, 4, 5]) == 3
# median([-10, 4, 6, 1000, 10, 20]) == 15.0
def median(l):
sorted_l = sorted(l)
if len(sorted_l) % 2 == 0:
mid_index = len(sorted_l) // 2
return (sorted_l[mid_index - 1] + sorted_l[mid_index]) / 2
else:
mid_index = len(sorted_l) // 2
return sorted_l[mid_index]
```var sorted = l.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constantfunc median(l: [Int]) -> Double {
var sorted = l.sorted()
if sorted.count % 2 == 0 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}```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 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}
``````
```python
# Return median of elements in the array l.
# median([3, 1, 2, 4, 5]) == 3
# median([-10, 4, 6, 1000, 10, 20]) == 15.0
def median(l):
sorted_l = sorted(l)
if len(sorted_l) % 2 == 0:
mid_index = len(sorted_l) // 2
return (sorted_l[mid_index - 1] + sorted_l[mid_index]) / 2
else:
mid_index = len(sorted_l) // 2
return sorted_l[mid_index]
```var sorted = l.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constantfunc median(l: [Int]) -> Double {
var sorted = l.sorted()
if sorted.count % 2 == 0 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2.0
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}```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 {
let midIndex = sorted.count / 2
return Double(sorted[midIndex - 1] + sorted[midIndex]) / 2.0
} else {
let midIndex = sorted.count / 2
return Double(sorted[midIndex])
}
}
``````
```python
# Return median of elements in the array l.
# median([3, 1, 2, 4, 5]) == 3
# median([-10, 4, 6, 1000, 10, 20]) == 15.0
def median(l):
sorted_l = sorted(l)
if len(sorted_l) % 2 == 0:
mid_index = len(sorted_l) // 2
return (sorted_l[mid_index - 1] + sorted_l[mid_index]) / 2.0
else:
mid_index = len(sorted_l) // 2
return sorted_l[mid_index]
```var sorted = l.sorted() // variable 'sorted' was never mutated; consider changing to 'let' constantfunc isPalindrome(text: String) -> Bool {
let characters = Array(text)
var start = 0
var end = characters.count - 1
while start < end {
if characters[start] != characters[end] {
return false
}
start += 1
end -= 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 characters = Array(text)
var start = 0
var end = characters.count - 1
while start < end {
if characters[start] != characters[end] {
return false
}
start += 1
end -= 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 characters = Array(text)
var start = 0
var end = characters.count - 1
while start < end {
if characters[start] != characters[end] {
return false
}
start += 1
end -= 1
}
return true
}
// Test cases
print(isPalindrome(text: "")) // true
print(isPalindrome(text: "aba")) // true
print(isPalindrome(text: "aaaaa")) // true
print(isPalindrome(text: "zbcd")) // false
```func isPalindrome(text: String) -> Bool {
let characters = Array(text)
var startIndex = 0
var endIndex = characters.count - 1
while startIndex < endIndex {
if characters[startIndex] != characters[endIndex] {
return false
}
startIndex += 1
endIndex -= 1
}
return true
}
func isPrime(number: Int) -> Bool {
if number <= 1 {
return false
}
if number <= 3 {
return true
}
if number % 2 == 0 || number % 3 == 0 {
return false
}
var i = 5
while i * i <= number {
if number % i == 0 || number % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
func isPerfectSquare(number: Int) -> Bool {
if number < 0 {
return false
}
var root = Int(sqrt(Double(number)))
return root * root == number
}
func isPowerOfTwo(number: Int) -> Bool {
return number != 0 && (number & (number - 1)) == 0
}
func isMultipleOfThree(number: Int) -> Bool {
if number == 0 {
return true
}
if number == 1 {
return false
}
let remainder = number % 3
return remainder == 0 || remainder == 1
}
func isMultipleOfFive(number: Int) -> Bool {
if number == 0 {
return true
}
if number == 1 {
return false
}
let remainder = number % 5
return remainder == 0 || remainder == 1
}
func isMultipleOfSeven(number: Int) -> Bool {
if number == 0 {
return true
}
if number == 1 {
return false
}
let remainder = number % 7
return remainder == 0 || remainder == 1
}```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 characters = Array(text)
var startIndex = 0
var endIndex = characters.count - 1
while startIndex < endIndex {
if characters[startIndex] != characters[endIndex] {
return false
}
startIndex += 1
endIndex -= 1
}
return true
}
// Checks if given number is a prime number
// isPrime(number: 0) == false
// isPrime(number: 1) == false
// isPrime(number: 2) == true
// isPrime(number: 3) == true
// isPrime(number: 4) == false
func isPrime(number: Int) -> Bool {
if number <= 1 {
return false
}
if number <= 3 {
return true
}
if number % 2 == 0 || number % 3 == 0 {
return false
}
var i = 5
while i * i <= number {
if number % i == 0 || number % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
// Checks if given number is a perfect square
// isPerfectSquare(number: 0) == true
// isPerfectSquare(number: 1) == true
// isPerfectSquare(number: 4) == true
// isPerfectSquare(number: 5) == false
func isPerfectSquare(number: Int) -> Bool {
if number < 0 {
return false
}
var root = Int(sqrt(Double(number)))
return root * root == number
}
// Checks if given number is a power of 2
// isPowerOfTwo(number: 0) == false
// isPowerOfTwo(number: 1) == true
// isPowerOfTwo(number: 2) == true
// isPowerOfTwo(number: 3) == false
func isPowerOfTwo(number: Int) -> Bool {
return number != 0 && (number & (number - 1)) == 0
}
// Checks if given number is a multiple of 3
// isMultipleOfThree(number: 0) == true
// isMultipleOfThree(number: 1) == false
// isMultipleOfThree(number: 3) == true
// isMultipleOfThree(number: 4) == false
func isMultipleOfThree(number: Int) -> Bool {
if number == 0 {
return true
}
if number == 1 {
return false
}
let remainder = number % 3
return remainder == 0 || remainder == 1
}
// Checks if given number is a multiple of 5
// isMultipleOfFive(number: 0) == true
// isMultipleOfFive(number: 1) == false
// isMultipleOfFive(number: 5) == true
// isMultipleOfFive(number: 6) == false
func isMultipleOfFive(number: Int) -> Bool {
if number == 0 {
return true
}
if number == 1 {
return false
}
let remainder = number % 5
return remainder == 0 || remainder == 1
}
// Checks if given number is a multiple of 7
// isMultipleOfSeven(number: 0) == true
// isMultipleOfSeven(number: 1) == false
// isMultipleOfSeven(number: 7) == true
// isMultipleOfSeven(number: 8) == false
func isMultipleOfSeven(number: Int) -> Bool {
if number == 0 {
return true
}
if number == 1 {
return false
}
let remainder = number % 7
return remainder == 0 || remainder == 1
}
// Checks if given number is a multiple of 11
// isMultipleOfEleven(number: 0) == true
// isMultipleOfEleven(number: 1) == false
// isMultipleOfEleven(number: 11) == true
// isMultipleOfEleven(numbervar root = Int(sqrt(Double(number))) // variable 'root' was never mutated; consider changing to 'let' constantfunc isPalindrome(text: String) -> Bool {
let characters = Array(text)
var startIndex = 0
var endIndex = characters.count - 1
while startIndex < endIndex {
if characters[startIndex] != characters[endIndex] {
return false
}
startIndex += 1
endIndex -= 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 characters = Array(text)
var startIndex = 0
var endIndex = characters.count - 1
while startIndex < endIndex {
if characters[startIndex] != characters[endIndex] {
return false
}
startIndex += 1
endIndex -= 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 characters = Array(text)
var startIndex = 0
var endIndex = characters.count - 1
while startIndex < endIndex {
if characters[startIndex] != characters[endIndex] {
return false
}
startIndex += 1
endIndex -= 1
}
return true
}
// Test cases
print(isPalindrome(text: "")) // true
print(isPalindrome(text: "aba")) // true
print(isPalindrome(text: "aaaaa")) // true
print(isPalindrome(text: "zbcd")) // false
```func isPalindrome(text: String) -> Bool {
let characters = Array(text)
var startIndex = 0
var endIndex = characters.count - 1
while startIndex < endIndex {
if characters[startIndex] != characters[endIndex] {
return false
}
startIndex += 1
endIndex -= 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 characters = Array(text)
var startIndex = 0
var endIndex = characters.count - 1
while startIndex < endIndex {
if characters[startIndex] != characters[endIndex] {
return false
}
startIndex += 1
endIndex -= 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 characters = Array(text)
var startIndex = 0
var endIndex = characters.count - 1
while startIndex < endIndex {
if characters[startIndex] != characters[endIndex] {
return false
}
startIndex += 1
endIndex -= 1
}
return true
}
``````func isPalindrome(text: String) -> Bool {
let characters = Array(text)
var start = 0
var end = characters.count - 1
while start < end {
if characters[start] != characters[end] {
return false
}
start += 1
end -= 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 characters = Array(text)
var start = 0
var end = characters.count - 1
while start < end {
if characters[start] != characters[end] {
return false
}
start += 1
end -= 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 characters = Array(text)
var start = 0
var end = characters.count - 1
while start < end {
if characters[start] != characters[end] {
return false
}
start += 1
end -= 1
}
return true
}
// Test cases
print(isPalindrome(text: "")) // true
print(isPalindrome(text: "aba")) // true
print(isPalindrome(text: "aaaaa")) // true
print(isPalindrome(text: "zbcd")) // false
```func isPalindrome(text: String) -> Bool {
let characters = Array(text)
var left = 0
var right = characters.count - 1
while left < right {
if characters[left] != characters[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 characters = Array(text)
var left = 0
var right = characters.count - 1
while left < right {
if characters[left] != characters[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 characters = Array(text)
var left = 0
var right = characters.count - 1
while left < right {
if characters[left] != characters[right] {
return false
}
left += 1
right -= 1
}
return true
}
// Test cases
print(isPalindrome(text: "")) // true
print(isPalindrome(text: "aba")) // true
print(isPalindrome(text: "aaaaa")) // true
print(isPalindrome(text: "zbcd")) // false
```func isPalindrome(text: String) -> Bool {
let characters = Array(text)
var start = 0
var end = characters.count - 1
while start < end {
if characters[start] != characters[end] {
return false
}
start += 1
end -= 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 characters = Array(text)
var start = 0
var end = characters.count - 1
while start < end {
if characters[start] != characters[end] {
return false
}
start += 1
end -= 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 characters = Array(text)
var start = 0
var end = characters.count - 1
while start < end {
if characters[start] != characters[end] {
return false
}
start += 1
end -= 1
}
return true
}
// Test cases
print(isPalindrome(text: "")) // true
print(isPalindrome(text: "aba")) // true
print(isPalindrome(text: "aaaaa")) // true
print(isPalindrome(text: "zbcd")) // false
```func isPalindrome(text: String) -> Bool {
let characters = Array(text)
var start = 0
var end = characters.count - 1
while start < end {
if characters[start] != characters[end] {
return false
}
start += 1
end -= 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 characters = Array(text)
var start = 0
var end = characters.count - 1
while start < end {
if characters[start] != characters[end] {
return false
}
start += 1
end -= 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 characters = Array(text)
var start = 0
var end = characters.count - 1
while start < end {
if characters[start] != characters[end] {
return false
}
start += 1
end -= 1
}
return true
}
// Test cases
print(isPalindrome(text: "")) // true
print(isPalindrome(text: "aba")) // true
print(isPalindrome(text: "aaaaa")) // true
print(isPalindrome(text: "zbcd")) // false
```func isPalindrome(text: String) -> Bool {
let characters = Array(text)
var startIndex = 0
var endIndex = characters.count - 1
while startIndex < endIndex {
if characters[startIndex] != characters[endIndex] {
return false
}
startIndex += 1
endIndex -= 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 characters = Array(text)
var startIndex = 0
var endIndex = characters.count - 1
while startIndex < endIndex {
if characters[startIndex] != characters[endIndex] {
return false
}
startIndex += 1
endIndex -= 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 characters = Array(text)
var startIndex = 0
var endIndex = characters.count - 1
while startIndex < endIndex {
if characters[startIndex] != characters[endIndex] {
return false
}
startIndex += 1
endIndex -= 1
}
return true
}
// Test cases
print(isPalindrome(text: "")) // true
print(isPalindrome(text: "aba")) // true
print(isPalindrome(text: "aaaaa")) // true
print(isPalindrome(text: "zbcd")) // false
```func isPalindrome(text: String) -> Bool {
let characters = Array(text)
var start = 0
var end = characters.count - 1
while start < end {
if characters[start] != characters[end] {
return false
}
start += 1
end -= 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 characters = Array(text)
var start = 0
var end = characters.count - 1
while start < end {
if characters[start] != characters[end] {
return false
}
start += 1
end -= 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 characters = Array(text)
var start = 0
var end = characters.count - 1
while start < end {
if characters[start] != characters[end] {
return false
}
start += 1
end -= 1
}
return true
}
// Test cases
print(isPalindrome(text: "")) // true
print(isPalindrome(text: "aba")) // true
print(isPalindrome(text: "aaaaa")) // true
print(isPalindrome(text: "zbcd")) // false
```func modp(n: Int, p: Int) -> Int {
var result = 1
for _ in 1...n {
result *= 2
if result >= p {
result %= p
}
}
return result
}```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 result = 1
for _ in 1...n {
result *= 2
if result >= p {
result %= p
}
}
return result
}
``````
```python
# Return 2^n modulo p (be aware of numerics).
# modp(3, 5) == 3
# modp(1101, 101) == 2
# modp(0, 101) == 1
# modp(3, 11) == 8
# modp(100, 101) == 1
def modp(n, p):
result = 1
for _ in range(n):
result *= 2
if result >= p:
result %= p
return result
```
```python
# Test cases
print(modp(3, 5)) # 3
print(modp(1101, 101)) # 2
print(modp(0, 101)) # 1
print(modp(3, 11)) # 8
print(modp(100, 101)) # 1
``` // Fatal error: Range requires lowerBound <= upperBoundfunc modp(n: Int, p: Int) -> Int {
var result = 1
var base = 2
var power = n
while power > 0 {
if power % 2 == 1 {
result = (result * base) % p
}
base = (base * base) % p
power = power / 2
}
return result
}
func gcd(_ a: Int, _ b: Int) -> Int {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return a
}
func lcm(_ a: Int, _ b: Int) -> Int {
return a * b / gcd(a, b)
}
func factorial(_ n: Int) -> Int {
var result = 1
for i in 2...n {
result *= i
}
return result
}
func binomialCoefficient(_ n: Int, _ k: Int) -> Int {
if k == 0 || k == n {
return 1
}
var result = 1
for i in 1...k {
result = result * (n - i + 1) / i
}
return result
}
func fibonacci(_ n: Int) -> Int {
if n <= 1 {
return n
}
var a = 0
var b = 1
for _ in 2...n {
let temp = a
a = b
b = temp + b
}
return b
}
func nthPrime(_ n: Int) -> Int {
var count = 0
var number = 1
while count < n {
number += 1
if isPrime(number) {
count += 1
}
}
return number
}```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 result = 1
var base = 2
var power = n
while power > 0 {
if power % 2 == 1 {
result = (result * base) % p
}
base = (base * base) % p
power = power / 2
}
return result
}
// Return the greatest common divisor of a and b.
// gcd(a: 48, b: 18) == 6
// gcd(a: 101, b: 103) == 1
// gcd(a: 100, b: 100) == 100
// gcd(a: 101, b: 103) == 1
func gcd(_ a: Int, _ b: Int) -> Int {
var a = a
var b = b
while b != 0 {
let temp = b
b = a % b
a = temp
}
return a
}
// Return the least common multiple of a and b.
// lcm(a: 5, b: 7) == 35
// lcm(a: 10, b: 15) == 30
// lcm(a: 100, b: 101) == 10100
// lcm(a: 1000, b: 1001) == 1001000
func lcm(_ a: Int, _ b: Int) -> Int {
return a * b / gcd(a, b)
}
// Return the factorial of n.
// factorial(n: 0) == 1
// factorial(n: 1) == 1
// factorial(n: 2) == 2
// factorial(n: 3) == 6
// factorial(n: 4) == 24
// factorial(n: 5) == 120
func factorial(_ n: Int) -> Int {
var result = 1
for i in 2...n {
result *= i
}
return result
}
// Return the binomial coefficient C(n, k).
// binomialCoefficient(n: 5, k: 3) == 10
// binomialCoefficient(n: 10, k: 5) == 252
// binomialCoefficient(n: 10, k: 10) == 1
// binomialCoefficient(n: 10, k: 0) == 1
func binomialCoefficient(_ n: Int, _ k: Int) -> Int {
if k == 0 || k == n {
return 1
}
var result = 1
for i in 1...k {
result = result * (n - i + 1) / i
}
return result
}
// Return the Fibonacci number at index n.
// fibonacci(n: 0) == 0
// fibonacci(n: 1) == 1
// fibonacci(n: 2) == 1
// fibonacci(n: 3) == 2
// fibonacci(n: 4) == 3
// fibonacci(n: 5) == 5
func fibonacci(_ n: Int) -> Int {
if n <= 1 {
return n
}
var a = 0
var b = 1
for _ in 2...n {
let temp = a
a = b
b = temp + b
}
return b
}
// Return the nth prime number.
// nthPrime(n: 1) == 2
// nthPrime(n: 2) == 3
// nthPrime(n: 3) == 5
// nthPrime(n: 4) == 7
// nthPrime(n: 5) == 11
func nthPrime(_ n: Int) -> Int {
var count = 0
var number = 1
while count < n {
number += 1
if isPrime(number) {
count += 1
}
}
return number
}
// Return trueif isPrime(number) { // cannot find 'isPrime' in scopefunc modp(n: Int, p: Int) -> Int {
// 1. Initialize result
var result = 1
// 2. Multiply base with result n times
for _ in 1...n {
result *= 2
// 3. If result is greater than p, subtract p from result
if result >= p {
result -= p
}
}
// 4. Return result
return result
}```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 {
// 1. Initialize result
var result = 1
// 2. Multiply base with result n times
for _ in 1...n {
result *= 2
// 3. If result is greater than p, subtract p from result
if result >= p {
result -= p
}
}
// 4. Return result
return result
}
``````
```swift
// Test cases
print(modp(n: 3, p: 5)) // 3
print(modp(n: 1101, p: 101)) // 2
print(modp(n: 0, p: 101)) // 1
print(modp(n: 3, p: 11)) // 8
print(modp(n: 100, p: 101)) // 1
``` // Fatal error: Range requires lowerBound <= upperBoundfunc modp(n: Int, p: Int) -> Int {
var result = 1
var base = 2
var power = n
while power > 0 {
if power % 2 == 1 {
result = (result * base) % p
}
base = (base * base) % p
power = power / 2
}
return result
}```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 result = 1
var base = 2
var power = n
while power > 0 {
if power % 2 == 1 {
result = (result * base) % p
}
base = (base * base) % p
power = power / 2
}
return result
}
``````
```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 result = 1
var base = 2
var power = n
while power > 0 {
if power % 2 == 1 {
result = (result * base) % p
}
base = (base * base) % p
power = power / 2
}
return result
}
```func modp(n: Int, p: Int) -> Int {
return Int(pow(2, Double(n)) % Double(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 {
return Int(pow(2, Double(n)) % Double(p))
}
``````
```python
# Return 2^n modulo p (be aware of numerics).
# modp(3, 5) == 3
# modp(1101, 101) == 2
# modp(0, 101) == 1
# modp(3, 11) == 8
# modp(100, 101) == 1
def modp(n, p):
return pow(2, n, p)
```return Int(pow(2, Double(n)) % Double(p)) // '%' is unavailable: For floating point numbers use truncatingRemainder insteadfunc modp(n: Int, p: Int) -> Int {
var result = 1
var base = 2
var exp = n
while exp > 0 {
if exp & 1 == 1 {
result = (result * base) % p
}
base = (base * base) % p
exp >>= 1
}
return result
}```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 result = 1
var base = 2
var exp = n
while exp > 0 {
if exp & 1 == 1 {
result = (result * base) % p
}
base = (base * base) % p
exp >>= 1
}
return result
}
``````
```python
# Return 2^n modulo p (be aware of numerics).
# modp(3, 5) == 3
# modp(1101, 101) == 2
# modp(0, 101) == 1
# modp(3, 11) == 8
# modp(100, 101) == 1
def modp(n, p):
result = 1
base = 2
exp = n
while exp > 0:
if exp & 1 == 1:
result = (result * base) % p
base = (base * base) % p
exp >>= 1
return result
```func modp(n: Int, p: Int) -> Int {
var result = 1
var base = 2
var power = n
while power > 0 {
if power % 2 == 1 {
result = (result * base) % p
}
base = (base * base) % p
power = power / 2
}
return result
}```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 result = 1
var base = 2
var power = n
while power > 0 {
if power % 2 == 1 {
result = (result * base) % p
}
base = (base * base) % p
power = power / 2
}
return result
}
``````
```python
# Return 2^n modulo p (be aware of numerics).
# modp(3, 5) == 3
# modp(1101, 101) == 2
# modp(0, 101) == 1
# modp(3, 11) == 8
# modp(100, 101) == 1
def modp(n, p):
result = 1
base = 2
power = n
while power > 0:
if power % 2 == 1:
result = (result * base) % p
base = (base * base) % p
power = power // 2
return result
```
```python
# Test cases
print(modp(3, 5)) # 3
print(modp(1101, 101)) # 2
print(modp(0, 101)) # 1
print(modp(3, 11)) # 8
print(modp(100, 101)) # 1
```func modp(n: Int, p: Int) -> Int {
var result = 1
var base = 2
var power = n
while power > 0 {
if power % 2 == 1 {
result = (result * base) % p
}
base = (base * base) % p
power = power / 2
}
return result
}```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 result = 1
var base = 2
var power = n
while power > 0 {
if power % 2 == 1 {
result = (result * base) % p
}
base = (base * base) % p
power = power / 2
}
return result
}
`````````python
# 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
def modp(n: int, p: int) -> int:
result = 1
base = 2
power = n
while power > 0:
if power % 2 == 1:
result = (result * base) % p
base = (base * base) % p
power = power // 2
return result
```func modp(n: Int, p: Int) -> Int {
var result = 1
var base = 2
var power = n
while power > 0 {
if power % 2 == 1 {
result = (result * base) % p
}
base = (base * base) % p
power = power / 2
}
return result
}```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 result = 1
var base = 2
var power = n
while power > 0 {
if power % 2 == 1 {
result = (result * base) % p
}
base = (base * base) % p
power = power / 2
}
return result
}
``````
```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 result = 1
var base = 2
var power = n
while power > 0 {
if power % 2 == 1 {
result = (result * base) % p
}
base = (base * base) % p
power = power / 2
}
return result
}
// Test cases
print(modp(n: 3, p: 5)) // 3
print(modp(n: 1101, p: 101)) // 2
print(modp(n: 0, p: 101)) // 1
print(modp(n: 3, p: 11)) // 8
print(modp(n: 100, p: 101)) // 1
```func modp(n: Int, p: Int) -> Int {
var result = 1
for _ in 1...n {
result = (result * 2) % p
}
return result
}```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 result = 1
for _ in 1...n {
result = (result * 2) % p
}
return result
}
``````
```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 result = 1
for _ in 1...n {
result = (result * 2) % p
}
return result
}
// Test cases
print(modp(n: 3, p: 5)) // 3
print(modp(n: 1101, p: 101)) // 2
print(modp(n: 0, p: 101)) // 1
print(modp(n: 3, p: 11)) // 8
print(modp(n: 100, p: 101)) // 1
``` // Fatal error: Range requires lowerBound <= upperBoundfunc removeVowels(text: String) -> String {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]
var result = ""
for char in text {
if !vowels.contains(char) {
result.append(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 {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]
var result = ""
for char in text {
if !vowels.contains(char) {
result.append(char)
}
}
return result
}
`````````python
def remove_vowels(text):
vowels = {'a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U'}
result = ""
for char in text:
if char not in vowels:
result += char
return result
```func removeVowels(text: String) -> String {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for char in text {
if !vowels.contains(String(char)) {
result.append(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 {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for char in text {
if !vowels.contains(String(char)) {
result.append(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 {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for char in text {
if !vowels.contains(String(char)) {
result.append(char)
}
}
return result
}
```func removeVowels(text: String) -> String {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for char in text {
if !vowels.contains(String(char)) {
result.append(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 {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for char in text {
if !vowels.contains(String(char)) {
result.append(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 {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for char in text {
if !vowels.contains(String(char)) {
result.append(char)
}
}
return result
}
```func removeVowels(text: String) -> String {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]
var result = ""
for char in text {
if !vowels.contains(char) {
result.append(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 {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]
var result = ""
for char in text {
if !vowels.contains(char) {
result.append(char)
}
}
return result
}
print(removeVowels(text: "abcdef"))
print(removeVowels(text: "zbcd"))
``````func removeVowels(text: String) -> String {
let vowels = Set<Character>(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for char in text {
if !vowels.contains(char) {
result.append(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 {
let vowels = Set<Character>(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for char in text {
if !vowels.contains(char) {
result.append(char)
}
}
return result
}
``````
```python
# remove_vowels is a function that takes string and returns string without vowels.
# remove_vowels("") == ""
# remove_vowels("abcdef") == "bcdf"
# remove_vowels("aaaaa") == ""
# remove_vowels("aaBAA") == "B"
# remove_vowels("zbcd") == "zbcd"
def remove_vowels(text):
vowels = set(['a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U'])
result = ""
for char in text:
if char not in vowels:
result += char
return result
```func removeVowels(text: String) -> String {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]
var result = ""
for char in text {
if !vowels.contains(char) {
result.append(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 {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]
var result = ""
for char in text {
if !vowels.contains(char) {
result.append(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 {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]
var result = ""
for char in text {
if !vowels.contains(char) {
result.append(char)
}
}
return result
}
```func removeVowels(text: String) -> String {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for char in text {
if !vowels.contains(String(char)) {
result.append(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 {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for char in text {
if !vowels.contains(String(char)) {
result.append(char)
}
}
return result
}
`````````python
def remove_vowels(text):
vowels = set(['a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U'])
result = ""
for char in text:
if char not in vowels:
result += char
return result
print(remove_vowels("")) # ""
print(remove_vowels("abcdef")) # "bcdf"
print(remove_vowels("aaaaa")) # ""
print(remove_vowels("aaBAA")) # "B"
print(remove_vowels("zbcd")) # "zbcd"
```func removeVowels(text: String) -> String {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for char in text {
if !vowels.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 {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for char in text {
if !vowels.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 {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for char in text {
if !vowels.contains(String(char)) {
result += String(char)
}
}
return result
}
```func removeVowels(text: String) -> String {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for char in text {
if !vowels.contains(String(char)) {
result.append(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 {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for char in text {
if !vowels.contains(String(char)) {
result.append(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 {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for char in text {
if !vowels.contains(String(char)) {
result.append(char)
}
}
return result
}
```func removeVowels(text: String) -> String {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]
var result = ""
for char in text {
if !vowels.contains(char) {
result.append(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 {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]
var result = ""
for char in text {
if !vowels.contains(char) {
result.append(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 {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]
var result = ""
for char in text {
if !vowels.contains(char) {
result.append(char)
}
}
return result
}
// Test cases
print(removeVowels(text: "")) // ""
print(removeVowels(text: "abcdef")) // "bcdf"
print(removeVowels(text: "aaaaa")) // ""
print(removeVowels(text: "aaBAA")) // "B"
print(removeVowels(text: "zbcd")) // "zbcd"
```func belowThreshold(l: [Int], t: Int) -> Bool {
for num in l {
if num >= 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 num in l {
if num >= t {
return false
}
}
return true
}
`````````swift
// Test cases
print(belowThreshold(l: [1, 2, 4, 10], t: 100)) // true
print(belowThreshold(l: [1, 20, 4, 10], t: 5)) // false
```func belowThreshold(l: [Int], t: Int) -> Bool {
for num in l {
if num >= 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 num in l {
if num >= 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 num in l {
if num >= t {
return false
}
}
return true
}
```func belowThreshold(l: [Int], t: Int) -> Bool {
for num in l {
if num >= 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 num in l {
if num >= t {
return false
}
}
return true
}
`````````swift
// Testing the function
print(belowThreshold(l: [1, 2, 4, 10], t: 100)) // Expected output: true
print(belowThreshold(l: [1, 20, 4, 10], t: 5)) // Expected output: false
```func belowThreshold(l: [Int], t: Int) -> Bool {
for num in l {
if num >= 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 num in l {
if num >= 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 num in l {
if num >= t {
return false
}
}
return true
}
```func belowThreshold(l: [Int], t: Int) -> Bool {
for num in l {
if num >= 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 num in l {
if num >= t {
return false
}
}
return true
}
`````````swift
// Test the function with some examples
print(belowThreshold(l: [1, 2, 4, 10], t: 100)) // true
print(belowThreshold(l: [1, 20, 4, 10], t: 5)) // false
```func belowThreshold(l: [Int], t: Int) -> Bool {
for num in l {
if num >= 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 num in l {
if num >= 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 num in l {
if num >= t {
return false
}
}
return true
}
```func belowThreshold(l: [Int], t: Int) -> Bool {
for num in l {
if num >= 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 num in l {
if num >= 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 num in l {
if num >= t {
return false
}
}
return true
}
```func belowThreshold(l: [Int], t: Int) -> Bool {
for num in l {
if num >= 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 num in l {
if num >= t {
return false
}
}
return true
}
`````````swift
// Test cases
print(belowThreshold(l: [1, 2, 4, 10], t: 100)) // true
print(belowThreshold(l: [1, 20, 4, 10], t: 5)) // false
```func belowThreshold(l: [Int], t: Int) -> Bool {
for num in l {
if num >= t {
return false
}
}
return true
}
func sumArray(l: [Int]) -> Int {
var sum = 0
for num in l {
sum += num
}
return sum
}
func maxNumber(l: [Int]) -> Int {
var max = l[0]
for num in l {
if num > max {
max = num
}
}
return max
}
func minNumber(l: [Int]) -> Int {
var min = l[0]
for num in l {
if num < min {
min = num
}
}
return min
}
func averageArray(l: [Int]) -> Double {
var sum = 0
for num in l {
sum += num
}
return Double(sum) / Double(l.count)
}
func countEvenNumbers(l: [Int]) -> Int {
var count = 0
for num in l {
if num % 2 == 0 {
count += 1
}
}
return count
}
func countOddNumbers(l: [Int]) -> Int {
var count = 0
for num in l {
if num % 2 != 0 {
count += 1
}
}
return count
}
func countPrimeNumbers(l: [Int]) -> Int {
var count = 0
for num in l {
if isPrime(num) {
count += 1
}
}
return count
}
func isPrime(_ num: Int) -> Bool {
if num <= 1 {
return false
}
for i in 2..<num {
if num % i == 0 {
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 num in l {
if num >= t {
return false
}
}
return true
}
// Return the sum of all numbers in the array l.
// sumArray(l: [1, 2, 4, 10]) == 17
func sumArray(l: [Int]) -> Int {
var sum = 0
for num in l {
sum += num
}
return sum
}
// Return the maximum number in the array l.
// maxNumber(l: [1, 2, 4, 10]) == 10
func maxNumber(l: [Int]) -> Int {
var max = l[0]
for num in l {
if num > max {
max = num
}
}
return max
}
// Return the minimum number in the array l.
// minNumber(l: [1, 2, 4, 10]) == 1
func minNumber(l: [Int]) -> Int {
var min = l[0]
for num in l {
if num < min {
min = num
}
}
return min
}
// Return the average of all numbers in the array l.
// averageArray(l: [1, 2, 4, 10]) == 3.75
func averageArray(l: [Int]) -> Double {
var sum = 0
for num in l {
sum += num
}
return Double(sum) / Double(l.count)
}
// Return the number of even numbers in the array l.
// countEvenNumbers(l: [1, 2, 4, 10]) == 3
func countEvenNumbers(l: [Int]) -> Int {
var count = 0
for num in l {
if num % 2 == 0 {
count += 1
}
}
return count
}
// Return the number of odd numbers in the array l.
// countOddNumbers(l: [1, 2, 4, 10]) == 1
func countOddNumbers(l: [Int]) -> Int {
var count = 0
for num in l {
if num % 2 != 0 {
count += 1
}
}
return count
}
// Return the number of prime numbers in the array l.
// countPrimeNumbers(l: [1, 2, 4, 10]) == 1
func countPrimeNumbers(l: [Int]) -> Int {
var count = 0
for num in l {
if isPrime(num) {
count += 1
}
}
return count
}
// Helper function to check if a number is prime.
func isPrime(_ num: Int) -> Bool {
if num <= 1 {
return false
}
for i in 2..<num {
if num % i == 0 {
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 num in l {
if num >= t {
return false
}
}
return true
}
// Return the sum of all numbers in the array l.
// sumArray(l: [1, 2, 4, 10]) == 17
func sumArray(l: [Int]) -> Int {
var sum = 0
for num in l {
sum += num
}
return sum
}
// Return the maximum number in the array l.
// maxNumber(l: [1, 2, 4, 10]) == 10
func maxNumber(l: [Int]) -> Int {
var max = l[0]
for num in l {
if num > max {
func belowThreshold(l: [Int], t: Int) -> Bool {
for num in l {
if num >= 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 num in l {
if num >= 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 num in l {
if num >= t {
return false
}
}
return true
}
```func add(x: Int, y: Int) -> Int {
return x + y
}
func subtract(x: Int, y: Int) -> Int {
return x - y
}
func multiply(x: Int, y: Int) -> Int {
return x * y
}
func divide(x: Int, y: Int) -> Int {
return x / y
}
func remainder(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
}
// Subtract two numbers x and y
// subtract(x: 2, y: 3) == -1
// subtract(x: 5, y: 7) == -2
func subtract(x: Int, y: Int) -> Int {
return x - y
}
// Multiply two numbers x and y
// multiply(x: 2, y: 3) == 6
// multiply(x: 5, y: 7) == 35
func multiply(x: Int, y: Int) -> Int {
return x * y
}
// Divide two numbers x and y
// divide(x: 2, y: 3) == 0
// divide(x: 5, y: 7) == 0
func divide(x: Int, y: Int) -> Int {
return x / y
}
// Remainder of two numbers x and y
// remainder(x: 2, y: 3) == 2
// remainder(x: 5, y: 7) == 5
func remainder(x: Int, y: Int) -> Int {
return x % y
}
``````func add(x: Int, y: Int) -> Int {
return x + y
}
func subtract(x: Int, y: Int) -> Int {
return x - y
}
func multiply(x: Int, y: Int) -> Int {
return x * y
}
func divide(x: Int, y: Int) -> Int {
return x / y
}
func modulo(x: Int, y: Int) -> Int {
return x % y
}
func power(x: Int, y: Int) -> Int {
return Int(pow(Double(x), Double(y)))
}
func squareRoot(x: Int) -> Double {
return sqrt(Double(x))
}
func absoluteValue(x: Int) -> Int {
return abs(x)
}
func isEven(x: Int) -> Bool {
return x % 2 == 0
}
func isOdd(x: Int) -> Bool {
return x % 2 != 0
}
func isPrime(x: Int) -> Bool {
if x <= 1 {
return false
}
for i in 2..<x {
if x % i == 0 {
return false
}
}
return true
}
func factorial(_ x: Int) -> Int {
if x <= 1 {
return 1
}
return x * factorial(x - 1)
}
func fibonacci(x: Int) -> [Int] {
var fibonacciSequence = [Int]()
var a = 0
var b = 1
while a <= x {
fibonacciSequence.append(a)
let temp = a
a = b
b = temp + b
}
return fibonacciSequence
}```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
}
// Subtract two numbers x and y
// subtract(x: 2, y: 3) == -1
// subtract(x: 5, y: 7) == -2
func subtract(x: Int, y: Int) -> Int {
return x - y
}
// Multiply two numbers x and y
// multiply(x: 2, y: 3) == 6
// multiply(x: 5, y: 7) == 35
func multiply(x: Int, y: Int) -> Int {
return x * y
}
// Divide two numbers x and y
// divide(x: 2, y: 3) == 0
// divide(x: 5, y: 7) == 0
func divide(x: Int, y: Int) -> Int {
return x / y
}
// Modulo two numbers x and y
// modulo(x: 2, y: 3) == 2
// modulo(x: 5, y: 7) == 5
func modulo(x: Int, y: Int) -> Int {
return x % y
}
// Power of x to the y
// power(x: 2, y: 3) == 8
// power(x: 5, y: 7) == 128
func power(x: Int, y: Int) -> Int {
return Int(pow(Double(x), Double(y)))
}
// Square root of x
// squareRoot(x: 2) == 1.4142135623730951
// squareRoot(x: 5) == 2.23606797749979
func squareRoot(x: Int) -> Double {
return sqrt(Double(x))
}
// Absolute value of x
// absoluteValue(x: 2) == 2
// absoluteValue(x: -3) == 3
func absoluteValue(x: Int) -> Int {
return abs(x)
}
// Is x even?
// isEven(x: 2) == true
// isEven(x: 5) == false
func isEven(x: Int) -> Bool {
return x % 2 == 0
}
// Is x odd?
// isOdd(x: 2) == false
// isOdd(x: 5) == true
func isOdd(x: Int) -> Bool {
return x % 2 != 0
}
// Is x prime?
// isPrime(x: 2) == true
// isPrime(x: 5) == true
// isPrime(x: 6) == false
func isPrime(x: Int) -> Bool {
if x <= 1 {
return false
}
for i in 2..<x {
if x % i == 0 {
return false
}
}
return true
}
// Factorial of x
// factorial(x: 2) == 2
// factorial(x: 5) == 120
func factorial(_ x: Int) -> Int {
if x <= 1 {
return 1
}
return x * factorial(x - 1)
}
// Fibonacci sequence up to x
// fibonacci(x: 2) == [0, 1]
// fibonacci(x: 5) == [0, 1, 1, 2, 3, 5]
func fibonacci(x: Int) -> [Int] {
var fibonacciSequence = [Int]()
var a = 0
var b = 1
while a <= x {
fibonacciSequence.append(a)
let temp = a
a = b
b = temp + b
}
return fibonacciSequence
}
// Is x a palindrome?
// isPalindrome(x: "radar") == true
// isPalindrome(x: "hello") == false
func isPalindrome(x: String) -> Bool {
let characters = Array(xfunc add(x: Int, y: Int) -> Int {
return x + y
}
func subtract(x: Int, y: Int) -> Int {
return x - y
}
func multiply(x: Int, y: Int) -> Int {
return x * y
}
func divide(x: Int, y: Int) -> Int {
return x / y
}
func remainder(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
}
// Subtract two numbers x and y
// subtract(x: 2, y: 3) == -1
// subtract(x: 5, y: 7) == -2
func subtract(x: Int, y: Int) -> Int {
return x - y
}
// Multiply two numbers x and y
// multiply(x: 2, y: 3) == 6
// multiply(x: 5, y: 7) == 35
func multiply(x: Int, y: Int) -> Int {
return x * y
}
// Divide two numbers x and y
// divide(x: 2, y: 3) == 0
// divide(x: 5, y: 7) == 0
func divide(x: Int, y: Int) -> Int {
return x / y
}
// Remainder of two numbers x and y
// remainder(x: 2, y: 3) == 2
// remainder(x: 5, y: 7) == 5
func remainder(x: Int, y: Int) -> Int {
return x % y
}
``````func add(x: Int, y: Int) -> Int {
return x + y
}
func subtract(x: Int, y: Int) -> Int {
return x - y
}
func multiply(x: Int, y: Int) -> Int {
return x * y
}
func divide(x: Int, y: Int) -> Int {
return x / y
}
func modulo(x: Int, y: Int) -> Int {
return x % y
}
func power(x: Int, y: Int) -> Int {
return Int(pow(Double(x), Double(y)))
}
func squareRoot(x: Int) -> Double {
return sqrt(Double(x))
}
func absoluteValue(x: Int) -> Int {
return abs(x)
}
func isEven(x: Int) -> Bool {
return x % 2 == 0
}
func isOdd(x: Int) -> Bool {
return x % 2 != 0
}
func isPrime(x: Int) -> Bool {
if x <= 1 {
return false
}
for i in 2..<x {
if x % i == 0 {
return false
}
}
return true
}
func factorial(_ x: Int) -> Int {
if x == 0 {
return 1
}
return x * factorial(x - 1)
}
func fibonacci(x: Int) -> [Int] {
var fibonacciSequence = [Int]()
var a = 0
var b = 1
for _ in 0..<x {
fibonacciSequence.append(a)
let temp = a
a = b
b = temp + b
}
return fibonacciSequence
}```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
}
// Subtract two numbers x and y
// subtract(x: 2, y: 3) == -1
// subtract(x: 5, y: 7) == -2
func subtract(x: Int, y: Int) -> Int {
return x - y
}
// Multiply two numbers x and y
// multiply(x: 2, y: 3) == 6
// multiply(x: 5, y: 7) == 35
func multiply(x: Int, y: Int) -> Int {
return x * y
}
// Divide two numbers x and y
// divide(x: 2, y: 3) == 0
// divide(x: 5, y: 7) == 0
func divide(x: Int, y: Int) -> Int {
return x / y
}
// Modulo two numbers x and y
// modulo(x: 2, y: 3) == 2
// modulo(x: 5, y: 7) == 5
func modulo(x: Int, y: Int) -> Int {
return x % y
}
// Power of number x to the power y
// power(x: 2, y: 3) == 8
// power(x: 5, y: 7) == 781250000
func power(x: Int, y: Int) -> Int {
return Int(pow(Double(x), Double(y)))
}
// Square root of number x
// squareRoot(x: 2) == 1.4142135623730951
// squareRoot(x: 5) == 2.23606797749979
func squareRoot(x: Int) -> Double {
return sqrt(Double(x))
}
// Absolute value of number x
// absoluteValue(x: 2) == 2
// absoluteValue(x: -3) == 3
func absoluteValue(x: Int) -> Int {
return abs(x)
}
// Is number x even?
// isEven(x: 2) == true
// isEven(x: 3) == false
func isEven(x: Int) -> Bool {
return x % 2 == 0
}
// Is number x odd?
// isOdd(x: 2) == false
// isOdd(x: 3) == true
func isOdd(x: Int) -> Bool {
return x % 2 != 0
}
// Is number x prime?
// isPrime(x: 2) == true
// isPrime(x: 3) == true
// isPrime(x: 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
}
// Factorial of number x
// factorial(x: 2) == 2
// factorial(x: 3) == 6
func factorial(_ x: Int) -> Int {
if x == 0 {
return 1
}
return x * factorial(x - 1)
}
// Fibonacci sequence up to number x
// fibonacci(x: 2) == [0, 1]
// fibonacci(x: 3) == [0, 1, 1]
func fibonacci(x: Int) -> [Int] {
var fibonacciSequence = [Int]()
var a = 0
var b = 1
for _ in 0..<x {
fibonacciSequence.append(a)
let temp = a
a = b
b = temp + b
}
return fibonacciSequence
}
// Is number x a palindrome?
// isPalindrome(x: 2) == true
// isPalindrome(x: 3) == false
func isPalindrome(x: Int) -> Bool {func add(x: Int, y: Int) -> Int {
return x + y
}
func subtract(x: Int, y: Int) -> Int {
return x - y
}
func multiply(x: Int, y: Int) -> Int {
return x * y
}
func divide(x: Int, y: Int) -> Int {
return x / y
}
func modulo(x: Int, y: Int) -> Int {
return x % y
}
func power(x: Int, y: Int) -> Int {
return Int(pow(Double(x), Double(y)))
}
func squareRoot(x: Int) -> Double {
return sqrt(Double(x))
}
func absoluteValue(x: Int) -> Int {
return abs(x)
}
func factorial(_ x: Int) -> Int {
if x == 0 {
return 1
}
return x * factorial(x - 1)
}
func fibonacci(x: Int) -> [Int] {
var fibonacciSequence = [Int]()
var a = 0
var b = 1
for _ in 0..<x {
fibonacciSequence.append(a)
let temp = a
a = b
b = temp + b
}
return fibonacciSequence
}
func isPrime(x: Int) -> Bool {
if x <= 1 {
return false
}
for i in 2..<x {
if x % i == 0 {
return false
}
}
return true
}
func isEven(x: Int) -> Bool {
return x % 2 == 0
}
func isOdd(x: Int) -> Bool {
return x % 2 != 0
}```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
}
// Subtract two numbers x and y
// subtract(x: 2, y: 3) == -1
// subtract(x: 5, y: 7) == -2
func subtract(x: Int, y: Int) -> Int {
return x - y
}
// Multiply two numbers x and y
// multiply(x: 2, y: 3) == 6
// multiply(x: 5, y: 7) == 35
func multiply(x: Int, y: Int) -> Int {
return x * y
}
// Divide two numbers x and y
// divide(x: 2, y: 3) == 0
// divide(x: 5, y: 7) == 0
func divide(x: Int, y: Int) -> Int {
return x / y
}
// Modulo two numbers x and y
// modulo(x: 2, y: 3) == 2
// modulo(x: 5, y: 7) == 5
func modulo(x: Int, y: Int) -> Int {
return x % y
}
// Power of x to the y
// power(x: 2, y: 3) == 8
// power(x: 5, y: 7) == 781250000
func power(x: Int, y: Int) -> Int {
return Int(pow(Double(x), Double(y)))
}
// Square root of x
// squareRoot(x: 2) == 1.4142135623730951
// squareRoot(x: 5) == 2.23606797749979
func squareRoot(x: Int) -> Double {
return sqrt(Double(x))
}
// Absolute value of x
// absoluteValue(x: 2) == 2
// absoluteValue(x: -3) == 3
func absoluteValue(x: Int) -> Int {
return abs(x)
}
// Factorial of x
// factorial(x: 2) == 2
// factorial(x: 5) == 120
func factorial(_ x: Int) -> Int {
if x == 0 {
return 1
}
return x * factorial(x - 1)
}
// Fibonacci sequence up to x
// fibonacci(x: 2) == [0, 1]
// fibonacci(x: 5) == [0, 1, 1, 2, 3, 5]
func fibonacci(x: Int) -> [Int] {
var fibonacciSequence = [Int]()
var a = 0
var b = 1
for _ in 0..<x {
fibonacciSequence.append(a)
let temp = a
a = b
b = temp + b
}
return fibonacciSequence
}
// Check if x is prime
// isPrime(x: 2) == true
// isPrime(x: 5) == true
// isPrime(x: 6) == false
func isPrime(x: Int) -> Bool {
if x <= 1 {
return false
}
for i in 2..<x {
if x % i == 0 {
return false
}
}
return true
}
// Check if x is even
// isEven(x: 2) == true
// isEven(x: 5) == false
func isEven(x: Int) -> Bool {
return x % 2 == 0
}
// Check if x is odd
// isOdd(x: 2) == false
// isOdd(x: 5) == true
func isOdd(x: Int) -> Bool {
return x % 2 != 0
}
// Check if x is a palindrome
// isPalindrome(x: 2) == true
// isPalindrome(x: 5) == true
// isPalindrome(x: 6func add(x: Int, y: Int) -> Int {
return x + y
}
func subtract(x: Int, y: Int) -> Int {
return x - y
}
func multiply(x: Int, y: Int) -> Int {
return x * y
}
func divide(x: Int, y: Int) -> Int {
return x / y
}
func modulo(x: Int, y: Int) -> Int {
return x % y
}
func power(x: Int, y: Int) -> Int {
return Int(pow(Double(x), Double(y)))
}
func squareRoot(x: Int) -> Double {
return sqrt(Double(x))
}
func absoluteValue(x: Int) -> Int {
return abs(x)
}
func isEven(x: Int) -> Bool {
return x % 2 == 0
}
func isOdd(x: Int) -> Bool {
return x % 2 != 0
}
func isPrime(x: Int) -> Bool {
if x <= 1 {
return false
}
for i in 2..<x {
if x % i == 0 {
return false
}
}
return true
}
func factorial(_ x: Int) -> Int {
if x == 0 {
return 1
}
return x * factorial(x - 1)
}
func fibonacci(x: Int) -> [Int] {
var fib = [Int](repeating: 0, count: x)
if x > 0 {
fib[1] = 1
}
for i in 2..<x {
fib[i] = fib[i - 1] + fib[i - 2]
}
return fib
}```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
}
// Subtract two numbers x and y
// subtract(x: 2, y: 3) == -1
// subtract(x: 5, y: 7) == -2
func subtract(x: Int, y: Int) -> Int {
return x - y
}
// Multiply two numbers x and y
// multiply(x: 2, y: 3) == 6
// multiply(x: 5, y: 7) == 35
func multiply(x: Int, y: Int) -> Int {
return x * y
}
// Divide two numbers x and y
// divide(x: 2, y: 3) == 0
// divide(x: 5, y: 7) == 0
func divide(x: Int, y: Int) -> Int {
return x / y
}
// Modulo two numbers x and y
// modulo(x: 2, y: 3) == 2
// modulo(x: 5, y: 7) == 5
func modulo(x: Int, y: Int) -> Int {
return x % y
}
// Power of x to the y
// power(x: 2, y: 3) == 8
// power(x: 5, y: 7) == 78125
func power(x: Int, y: Int) -> Int {
return Int(pow(Double(x), Double(y)))
}
// Square root of x
// squareRoot(x: 2) == 1.41421356237
// squareRoot(x: 5) == 2.23606797749979
func squareRoot(x: Int) -> Double {
return sqrt(Double(x))
}
// Absolute value of x
// absoluteValue(x: 2) == 2
// absoluteValue(x: -3) == 3
func absoluteValue(x: Int) -> Int {
return abs(x)
}
// Is x even?
// isEven(x: 2) == true
// isEven(x: 5) == false
func isEven(x: Int) -> Bool {
return x % 2 == 0
}
// Is x odd?
// isOdd(x: 2) == false
// isOdd(x: 5) == true
func isOdd(x: Int) -> Bool {
return x % 2 != 0
}
// Is x prime?
// isPrime(x: 2) == true
// isPrime(x: 5) == true
// isPrime(x: 6) == false
func isPrime(x: Int) -> Bool {
if x <= 1 {
return false
}
for i in 2..<x {
if x % i == 0 {
return false
}
}
return true
}
// Factorial of x
// factorial(x: 2) == 2
// factorial(x: 5) == 120
func factorial(_ x: Int) -> Int {
if x == 0 {
return 1
}
return x * factorial(x - 1)
}
// Fibonacci sequence up to x
// fibonacci(x: 2) == [0, 1]
// fibonacci(x: 5) == [0, 1, 1, 2, 3, 5]
func fibonacci(x: Int) -> [Int] {
var fib = [Int](repeating: 0, count: x)
if x > 0 {
fib[1] = 1
}
for i in 2..<x {
fib[i] = fib[i - 1] + fib[i - 2]
}
return fib
}
// Is x a palindrome?
// isPalindrome(x: 2) == true
// isPalindrome(x: 5) == true
// isPalindrome(x: 6) == false
func isPalindrome(x: Intfunc add(x: Int, y: Int) -> Int {
return x + y
}
func subtract(x: Int, y: Int) -> Int {
return x - y
}
func multiply(x: Int, y: Int) -> Int {
return x * y
}
func divide(x: Int, y: Int) -> Int {
return x / y
}
func modulo(x: Int, y: Int) -> Int {
return x % y
}
func power(x: Int, y: Int) -> Int {
return Int(pow(Double(x), Double(y)))
}
func squareRoot(x: Int) -> Double {
return sqrt(Double(x))
}
func absoluteValue(x: Int) -> Int {
return abs(x)
}
func factorial(_ x: Int) -> Int {
var result = 1
for i in 1...x {
result *= i
}
return result
}
func fibonacci(x: Int) -> [Int] {
var fib = [Int](repeating: 0, count: x)
if x > 0 {
fib[1] = 1
}
for i in 2..<x {
fib[i] = fib[i - 1] + fib[i - 2]
}
return fib
}
func isPrime(x: Int) -> Bool {
if x <= 1 {
return false
}
for i in 2..<x {
if x % i == 0 {
return false
}
}
return true
}
func isEven(x: Int) -> Bool {
return x % 2 == 0
}
func isOdd(x: Int) -> Bool {
return x % 2 != 0
}```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
}
// Subtract two numbers x and y
// subtract(x: 2, y: 3) == -1
// subtract(x: 5, y: 7) == -2
func subtract(x: Int, y: Int) -> Int {
return x - y
}
// Multiply two numbers x and y
// multiply(x: 2, y: 3) == 6
// multiply(x: 5, y: 7) == 35
func multiply(x: Int, y: Int) -> Int {
return x * y
}
// Divide two numbers x and y
// divide(x: 2, y: 3) == 0
// divide(x: 5, y: 7) == 0
func divide(x: Int, y: Int) -> Int {
return x / y
}
// Modulo two numbers x and y
// modulo(x: 2, y: 3) == 2
// modulo(x: 5, y: 7) == 5
func modulo(x: Int, y: Int) -> Int {
return x % y
}
// Power of x to the y
// power(x: 2, y: 3) == 8
// power(x: 5, y: 7) == 125
func power(x: Int, y: Int) -> Int {
return Int(pow(Double(x), Double(y)))
}
// Square root of x
// squareRoot(x: 2) == 1.41421356237
// squareRoot(x: 5) == 2.23606797749
func squareRoot(x: Int) -> Double {
return sqrt(Double(x))
}
// Absolute value of x
// absoluteValue(x: 2) == 2
// absoluteValue(x: -3) == 3
func absoluteValue(x: Int) -> Int {
return abs(x)
}
// Factorial of x
// factorial(x: 2) == 2
// factorial(x: 5) == 120
func factorial(_ x: Int) -> Int {
var result = 1
for i in 1...x {
result *= i
}
return result
}
// Fibonacci sequence up to x
// fibonacci(x: 2) == [0, 1]
// fibonacci(x: 5) == [0, 1, 1, 2, 3, 5]
func fibonacci(x: Int) -> [Int] {
var fib = [Int](repeating: 0, count: x)
if x > 0 {
fib[1] = 1
}
for i in 2..<x {
fib[i] = fib[i - 1] + fib[i - 2]
}
return fib
}
// Check if x is prime
// isPrime(x: 2) == true
// isPrime(x: 5) == true
// isPrime(x: 6) == false
func isPrime(x: Int) -> Bool {
if x <= 1 {
return false
}
for i in 2..<x {
if x % i == 0 {
return false
}
}
return true
}
// Check if x is even
// isEven(x: 2) == true
// isEven(x: 5) == false
func isEven(x: Int) -> Bool {
return x % 2 == 0
}
// Check if x is odd
// isOdd(x: 2) == false
// isOdd(x: 5) == true
func isOdd(x: Int) -> Bool {
return x % 2 != 0
}
// Check if x is a palindrome
// isPalindrome(x: 2) == true
// isPalindrome(x: 5) == true
// isPalindrome(x: 6) == false
func isPalindrome(x: Intfunc add(x: Int, y: Int) -> Int {
return x + y
}
func subtract(x: Int, y: Int) -> Int {
return x - y
}
func multiply(x: Int, y: Int) -> Int {
return x * y
}
func divide(x: Int, y: Int) -> Int {
return x / y
}
func remainder(x: Int, y: Int) -> Int {
return x % y
}
func power(x: Int, y: Int) -> Int {
return Int(pow(Double(x), Double(y)))
}
func squareRoot(x: Int) -> Double {
return sqrt(Double(x))
}
func absoluteValue(x: Int) -> Int {
return abs(x)
}
func factorial(x: Int) -> Int {
var result = 1
for i in 1...x {
result *= i
}
return result
}
func isPrime(x: Int) -> Bool {
if x <= 1 {
return false
}
for i in 2..<x {
if x % i == 0 {
return false
}
}
return true
}
func isPalindrome(x: Int) -> Bool {
let str = String(x)
let reversed = String(str.reversed())
return str == reversed
}
func isPerfect(x: Int) -> Bool {
var sum = 0
for i in 1..<x {
if x % i == 0 {
sum += i
}
}
return sum == x
}
func isPerfectSquare(x: Int) -> Bool {
let sqrt = Int(sqrt(Double(x)))
return sqrt * sqrt == x
}```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
}
// Subtract two numbers x and y
// subtract(x: 2, y: 3) == -1
// subtract(x: 5, y: 7) == -2
func subtract(x: Int, y: Int) -> Int {
return x - y
}
// Multiply two numbers x and y
// multiply(x: 2, y: 3) == 6
// multiply(x: 5, y: 7) == 35
func multiply(x: Int, y: Int) -> Int {
return x * y
}
// Divide two numbers x and y
// divide(x: 2, y: 3) == 0
// divide(x: 5, y: 7) == 0
func divide(x: Int, y: Int) -> Int {
return x / y
}
// Remainder of two numbers x and y
// remainder(x: 2, y: 3) == 2
// remainder(x: 5, y: 7) == 5
func remainder(x: Int, y: Int) -> Int {
return x % y
}
// Power of two numbers x and y
// power(x: 2, y: 3) == 8
// power(x: 5, y: 7) == 781250000
func power(x: Int, y: Int) -> Int {
return Int(pow(Double(x), Double(y)))
}
// Square root of a number x
// squareRoot(x: 2) == 1.4142135623730951
// squareRoot(x: 5) == 2.23606797749979
func squareRoot(x: Int) -> Double {
return sqrt(Double(x))
}
// Absolute value of a number x
// absoluteValue(x: 2) == 2
// absoluteValue(x: -3) == 3
func absoluteValue(x: Int) -> Int {
return abs(x)
}
// Factorial of a number x
// factorial(x: 2) == 2
// factorial(x: 5) == 120
func factorial(x: Int) -> Int {
var result = 1
for i in 1...x {
result *= i
}
return result
}
// Is x a prime number?
// isPrime(x: 2) == true
// isPrime(x: 5) == true
// isPrime(x: 6) == false
func isPrime(x: Int) -> Bool {
if x <= 1 {
return false
}
for i in 2..<x {
if x % i == 0 {
return false
}
}
return true
}
// Is x a palindrome?
// isPalindrome(x: 2) == true
// isPalindrome(x: 5) == true
// isPalindrome(x: 6) == false
func isPalindrome(x: Int) -> Bool {
let str = String(x)
let reversed = String(str.reversed())
return str == reversed
}
// Is x a perfect number?
// isPerfect(x: 2) == false
// isPerfect(x: 6) == true
func isPerfect(x: Int) -> Bool {
var sum = 0
for i in 1..<x {
if x % i == 0 {
sum += i
}
}
return sum == x
}
// Is x a perfect square?
// isPerfectSquare(x: 2) == false
// isPerfectSquare(x: 4) == true
func isPerfectSquare(x: Int) -> Bool {
let sqrt = Int(sqrt(Double(x)))
return sqrt * sqrt == x
}
// Is x a perfect cube?
// isPerfectCube(x: 2) == false
// isPerfectCube(x: 8) == true
func add(x: Int, y: Int) -> Int {
return x + y
}
func subtract(x: Int, y: Int) -> Int {
return x - y
}
func multiply(x: Int, y: Int) -> Int {
return x * y
}
func divide(x: Int, y: Int) -> Int {
return x / y
}
func remainder(x: Int, y: Int) -> Int {
return x % y
}
func power(x: Int, y: Int) -> Int {
return Int(pow(Double(x), Double(y)))
}
func squareRoot(x: Int) -> Double {
return sqrt(Double(x))
}
func absoluteValue(x: Int) -> Int {
return abs(x)
}
func minimum(x: Int, y: Int) -> Int {
return min(x, y)
}
func maximum(x: Int, y: Int) -> Int {
return max(x, y)
}
func factorial(_ x: Int) -> Int {
if x == 0 {
return 1
}
return x * factorial(x - 1)
}
func fibonacci(x: Int) -> [Int] {
var fibonacciSequence = [Int]()
var a = 0
var b = 1
while a < x {
fibonacciSequence.append(a)
let temp = a
a = b
b = temp + b
}
return fibonacciSequence
}
func isPrime(x: Int) -> Bool {
if x <= 1 {
return false
}
for i in 2..<x {
if x % i == 0 {
return false
}
}
return true
}```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
}
// Subtract two numbers x and y
// subtract(x: 2, y: 3) == -1
// subtract(x: 5, y: 7) == -2
func subtract(x: Int, y: Int) -> Int {
return x - y
}
// Multiply two numbers x and y
// multiply(x: 2, y: 3) == 6
// multiply(x: 5, y: 7) == 35
func multiply(x: Int, y: Int) -> Int {
return x * y
}
// Divide two numbers x and y
// divide(x: 2, y: 3) == 0
// divide(x: 5, y: 7) == 0
func divide(x: Int, y: Int) -> Int {
return x / y
}
// Remainder of two numbers x and y
// remainder(x: 2, y: 3) == 2
// remainder(x: 5, y: 7) == 5
func remainder(x: Int, y: Int) -> Int {
return x % y
}
// Power of two numbers x and y
// power(x: 2, y: 3) == 8
// power(x: 5, y: 7) == 781250000
func power(x: Int, y: Int) -> Int {
return Int(pow(Double(x), Double(y)))
}
// Square root of a number x
// squareRoot(x: 2) == 1.41421356237
// squareRoot(x: 5) == 2.23606797749979
func squareRoot(x: Int) -> Double {
return sqrt(Double(x))
}
// Absolute value of a number x
// absoluteValue(x: 2) == 2
// absoluteValue(x: -3) == 3
func absoluteValue(x: Int) -> Int {
return abs(x)
}
// Minimum of two numbers x and y
// minimum(x: 2, y: 3) == 2
// minimum(x: 5, y: 7) == 5
func minimum(x: Int, y: Int) -> Int {
return min(x, y)
}
// Maximum of two numbers x and y
// maximum(x: 2, y: 3) == 3
// maximum(x: 5, y: 7) == 7
func maximum(x: Int, y: Int) -> Int {
return max(x, y)
}
// Factorial of a number x
// factorial(x: 2) == 2
// factorial(x: 5) == 120
func factorial(_ x: Int) -> Int {
if x == 0 {
return 1
}
return x * factorial(x - 1)
}
// Fibonacci sequence up to a number x
// fibonacci(x: 2) == [0, 1]
// fibonacci(x: 5) == [0, 1, 1, 2, 3, 5]
func fibonacci(x: Int) -> [Int] {
var fibonacciSequence = [Int]()
var a = 0
var b = 1
while a < x {
fibonacciSequence.append(a)
let temp = a
a = b
b = temp + b
}
return fibonacciSequence
}
// Check if a number is prime
// isPrime(x: 2) == true
// isPrime(x: 5) == true
// isPrime(x: 6) == false
func isPrime(x: Int) -> Bool {
if x <= 1 {
return false
}
for i in 2..<x {
if x % i == 0 {
return false
}
}
return true
}
// Check if a number is even
// isEven(x: 2) == true
// isEven(x:func add(x: Int, y: Int) -> Int {
return x + y
}
func subtract(x: Int, y: Int) -> Int {
return x - y
}
func multiply(x: Int, y: Int) -> Int {
return x * y
}
func divide(x: Int, y: Int) -> Int {
return x / y
}
func remainder(x: Int, y: Int) -> Int {
return x % y
}
func power(x: Int, y: Int) -> Int {
return Int(pow(Double(x), Double(y)))
}
func squareRoot(x: Int) -> Double {
return sqrt(Double(x))
}
func absoluteValue(x: Int) -> Int {
return abs(x)
}
func factorial(_ x: Int) -> Int {
var result = 1
for i in 1...x {
result *= i
}
return result
}
func isEven(x: Int) -> Bool {
return x % 2 == 0
}
func isOdd(x: Int) -> Bool {
return x % 2 != 0
}
func isPrime(x: Int) -> Bool {
if x <= 1 {
return false
}
for i in 2..<x {
if x % i == 0 {
return false
}
}
return true
}
func isPalindrome(x: Int) -> Bool {
let str = String(x)
return str == String(str.reversed())
}
func isPerfectSquare(x: Int) -> Bool {
let sqrt = Int(sqrt(Double(x)))
return sqrt * sqrt == x
}```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
}
// Subtract two numbers x and y
// subtract(x: 2, y: 3) == -1
// subtract(x: 5, y: 7) == -2
func subtract(x: Int, y: Int) -> Int {
return x - y
}
// Multiply two numbers x and y
// multiply(x: 2, y: 3) == 6
// multiply(x: 5, y: 7) == 35
func multiply(x: Int, y: Int) -> Int {
return x * y
}
// Divide two numbers x and y
// divide(x: 2, y: 3) == 0
// divide(x: 5, y: 7) == 0
func divide(x: Int, y: Int) -> Int {
return x / y
}
// Calculate the remainder of two numbers x and y
// remainder(x: 2, y: 3) == 2
// remainder(x: 5, y: 7) == 5
func remainder(x: Int, y: Int) -> Int {
return x % y
}
// Calculate the power of two numbers x and y
// power(x: 2, y: 3) == 8
// power(x: 5, y: 7) == 781250000
func power(x: Int, y: Int) -> Int {
return Int(pow(Double(x), Double(y)))
}
// Calculate the square root of a number x
// squareRoot(x: 2) == 1.4142135623730951
// squareRoot(x: 5) == 2.23606797749979
func squareRoot(x: Int) -> Double {
return sqrt(Double(x))
}
// Calculate the absolute value of a number x
// absoluteValue(x: 2) == 2
// absoluteValue(x: -3) == 3
func absoluteValue(x: Int) -> Int {
return abs(x)
}
// Calculate the factorial of a number x
// factorial(x: 2) == 2
// factorial(x: 5) == 120
func factorial(_ x: Int) -> Int {
var result = 1
for i in 1...x {
result *= i
}
return result
}
// Check if a number x is even
// isEven(x: 2) == true
// isEven(x: 5) == false
func isEven(x: Int) -> Bool {
return x % 2 == 0
}
// Check if a number x is odd
// isOdd(x: 2) == false
// isOdd(x: 5) == true
func isOdd(x: Int) -> Bool {
return x % 2 != 0
}
// Check if a number x is prime
// isPrime(x: 2) == true
// isPrime(x: 5) == true
// isPrime(x: 6) == false
func isPrime(x: Int) -> Bool {
if x <= 1 {
return false
}
for i in 2..<x {
if x % i == 0 {
return false
}
}
return true
}
// Check if a number x is a palindrome
// isPalindrome(x: 2) == true
// isPalindrome(x: 5) == true
// isPalindrome(x: 6) == false
func isPalindrome(x: Int) -> Bool {
let str = String(x)
return str == String(str.reversed())
}
// Check if a number x is a perfect square
// isPerfectSquare(x: 2) == true
// isPerfectSquare(x: 5) == false
func isPerfectSquare(x: Int) -> Bool {
let sqrt = Int(sqrt(Double(x)))
return sqrt * sqrt == x
}
//func sameChars(s0: String, s1: String) -> Bool {
return s0.lowercased().elementsEqual(s1.lowercased())
}```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 {
return s0.lowercased().elementsEqual(s1.lowercased())
}
`````````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 {
return s0.lowercased().elementsEqual(s1.lowercased())
}
``` // XCTAssertTrue failedfunc sameChars(s0: String, s1: String) -> Bool {
var charCount = [Character: Int]()
for char in s0 {
charCount[char, default: 0] += 1
}
for char in s1 {
charCount[char, default: 0] -= 1
}
for (_, count) in charCount {
if count != 0 {
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 charCount = [Character: Int]()
for char in s0 {
charCount[char, default: 0] += 1
}
for char in s1 {
charCount[char, default: 0] -= 1
}
for (_, count) in charCount {
if count != 0 {
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 charCount = [Character: Int]()
for char in s0 {
charCount[char, default: 0] += 1
}
for char in s1 {
charCount[char, default: 0] -= 1
}
for (_, count) in charCount {
if count != 0 {
return false
}
}
return true
}
``` // XCTAssertTrue failedfunc sameChars(s0: String, s1: String) -> Bool {
var charCount = [Character: Int]()
for char in s0 {
charCount[char, default: 0] += 1
}
for char in s1 {
charCount[char, default: 0] -= 1
}
for (_, count) in charCount {
if count != 0 {
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 charCount = [Character: Int]()
for char in s0 {
charCount[char, default: 0] += 1
}
for char in s1 {
charCount[char, default: 0] -= 1
}
for (_, count) in charCount {
if count != 0 {
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 charCount = [Character: Int]()
for char in s0 {
charCount[char, default: 0] += 1
}
for char in s1 {
charCount[char, default: 0] -= 1
}
for (_, count) in charCount {
if count != 0 {
return false
}
}
return true
}
``` // XCTAssertTrue failedfunc sameChars(s0: String, s1: String) -> Bool {
return s0.lowercased().elementsEqual(s1.lowercased())
}```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 {
return s0.lowercased().elementsEqual(s1.lowercased())
}
`````````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 {
return s0.lowercased().elementsEqual(s1.lowercased())
}
``` // XCTAssertTrue failedfunc sameChars(s0: String, s1: String) -> Bool {
var charCount = [Character: Int]()
for char in s0 {
charCount[char, default: 0] += 1
}
for char in s1 {
charCount[char, default: 0] -= 1
}
return charCount.values.allSatisfy { $0 == 0 }
}```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 charCount = [Character: Int]()
for char in s0 {
charCount[char, default: 0] += 1
}
for char in s1 {
charCount[char, default: 0] -= 1
}
return charCount.values.allSatisfy { $0 == 0 }
}
`````````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 charCount = [Character: Int]()
for char in s0 {
charCount[char, default: 0] += 1
}
for char in s1 {
charCount[char, default: 0] -= 1
}
return charCount.values.allSatisfy { $0 == 0 }
}
``` // XCTAssertTrue failedfunc sameChars(s0: String, s1: String) -> Bool {
let sortedS0 = s0.lowercased().sorted()
let sortedS1 = s1.lowercased().sorted()
return sortedS0 == sortedS1
}```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 sortedS0 = s0.lowercased().sorted()
let sortedS1 = s1.lowercased().sorted()
return sortedS0 == sortedS1
}
`````````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 sortedS0 = s0.lowercased().sorted()
let sortedS1 = s1.lowercased().sorted()
return sortedS0 == sortedS1
}
``` // XCTAssertTrue failedfunc sameChars(s0: String, s1: String) -> Bool {
return s0.lowercased().elementsEqual(s1.lowercased())
}```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 {
return s0.lowercased().elementsEqual(s1.lowercased())
}
`````````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 {
return s0.lowercased().elementsEqual(s1.lowercased())
}
``` // XCTAssertTrue failedfunc sameChars(s0: String, s1: String) -> Bool {
return s0.lowercased().elementsEqual(s1.lowercased())
}```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 {
return s0.lowercased().elementsEqual(s1.lowercased())
}
`````````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 {
return s0.lowercased().elementsEqual(s1.lowercased())
}
``` // XCTAssertTrue failedfunc sameChars(s0: String, s1: String) -> Bool {
return s0.lowercased().elementsEqual(s1.lowercased())
}```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 {
return s0.lowercased().elementsEqual(s1.lowercased())
}
`````````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 {
return s0.lowercased().elementsEqual(s1.lowercased())
}
``` // XCTAssertTrue failedfunc sameChars(s0: String, s1: String) -> Bool {
return s0.lowercased().elementsEqual(s1.lowercased())
}```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 {
return s0.lowercased().elementsEqual(s1.lowercased())
}
`````````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 {
return s0.lowercased().elementsEqual(s1.lowercased())
}
``` // XCTAssertTrue failedfunc fib(n: Int) -> Int {
if n <= 1 {
return n
}
var fibo = [Int](repeating: 0, count: n + 1)
fibo[1] = 1
for i in 2..<=n {
fibo[i] = fibo[i - 1] + fibo[i - 2]
}
return fibo[n]
}```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 n
}
var fibo = [Int](repeating: 0, count: n + 1)
fibo[1] = 1
for i in 2..<=n {
fibo[i] = fibo[i - 1] + fibo[i - 2]
}
return fibo[n]
}
print(fib(n: 10))
print(fib(n: 1))
print(fib(n: 8))
``````
```python
# Return n-th Fibonacci number.
# fib(10) == 55
# fib(1) == 1
# fib(8) == 21
def fib(n):
if n <= 1:
return n
fibo = [0] * (n + 1)
fibo[1] = 1
for i in range(2, n + 1):
fibo[i] = fibo[i - 1] + fibo[i - 2]
return fibo[n]
print(fib(10))
print(fib(1))
print(fib(8))
```for i in 2..<=n { // cannot find operator '..<=' in scopefunc fib(n: Int) -> Int {
if n <= 1 {
return n
}
var fibo = [Int](repeating: 0, count: n + 1)
fibo[1] = 1
for i in 2..<n+1 {
fibo[i] = fibo[i - 1] + fibo[i - 2]
}
return fibo[n]
}```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 n
}
var fibo = [Int](repeating: 0, count: n + 1)
fibo[1] = 1
for i in 2..<n+1 {
fibo[i] = fibo[i - 1] + fibo[i - 2]
}
return fibo[n]
}
``````
```swift
// Test the function
print(fib(n: 10)) // 55
print(fib(n: 1)) // 1
print(fib(n: 8)) // 21
```func fib(n: Int) -> Int {
if n <= 1 {
return n
}
var a = 0
var b = 1
for _ in 2...n {
let temp = a
a = b
b = temp + 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 {
if n <= 1 {
return n
}
var a = 0
var b = 1
for _ in 2...n {
let temp = a
a = b
b = temp + 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 {
if n <= 1 {
return n
}
var a = 0
var b = 1
for _ in 2...n {
let temp = a
a = b
b = temp + b
}
return b
}
```func fib(n: Int) -> Int {
if n <= 1 {
return n
}
var a = 0
var b = 1
for _ in 2...n {
let temp = a
a = b
b = temp + b
}
return b
}
func sumFib(n: Int) -> Int {
if n <= 1 {
return n
}
var a = 0
var b = 1
var sum = 1
for _ in 2...n {
let temp = a
a = b
b = temp + b
sum += b
}
return sum
}
func prime(n: Int) -> Int {
var count = 0
var num = 1
while count < n {
num += 1
if isPrime(num) {
count += 1
}
}
return num
}
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 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 n
}
var a = 0
var b = 1
for _ in 2...n {
let temp = a
a = b
b = temp + b
}
return b
}
// Return the sum of the first n Fibonacci numbers.
// sumFib(n: 10) == 88
// sumFib(n: 1) == 1
// sumFib(n: 8) == 143
func sumFib(n: Int) -> Int {
if n <= 1 {
return n
}
var a = 0
var b = 1
var sum = 1
for _ in 2...n {
let temp = a
a = b
b = temp + b
sum += b
}
return sum
}
// Return the n-th prime number.
// prime(n: 1) == 2
// prime(n: 2) == 3
// prime(n: 3) == 5
func prime(n: Int) -> Int {
var count = 0
var num = 1
while count < n {
num += 1
if isPrime(num) {
count += 1
}
}
return num
}
// Return true if n is a prime number, false otherwise.
// isPrime(2) == true
// isPrime(4) == false
// isPrime(17) == true
func isPrime(n: Int) -> Bool {
if n <= 1 {
return false
}
for i in 2..<n {
if n % i == 0 {
return false
}
}
return true
}
`````````python
# Return n-th Fibonacci number.
# fib(10) == 55
# fib(1) == 1
# fib(8) == 21
def fib(n):
if n <= 1:
return n
a = 0
b = 1
for _ in range(2, n+1):
temp = a
a = b
b = temp + b
return b
# Return the sum of the first n Fibonacci numbers.
# sumFib(10) == 88
# sumFib(1) == 1
# sumFib(8) == 143
def sumFib(n):
if n <= 1:
return n
a = 0
b = 1
sum = 1
for _ in range(2, n+1):
temp = a
a = b
b = temp + b
sum += b
return sum
# Return the n-th prime number.
# prime(1) == 2
# prime(2) == 3
# prime(3) == 5
def prime(n):
count = 0
num = 1
while count < n:
num += 1
if isPrime(num):
count += 1
return num
# Return true if n is a prime number, false otherwise.
# isPrime(2) == True
# isPrime(4) == False
# isPrime(17) == True
def isPrime(n):
if n <= 1:
return False
for i in range(2, n):
if n % i == 0:
return False
return True
```if isPrime(num) { // missing argument label 'n:' in callfunc fib(n: Int) -> Int {
if n <= 1 {
return n
}
var fibo = [Int](repeating: 0, count: n + 1)
fibo[1] = 1
for i in 2..<n + 1 {
fibo[i] = fibo[i - 1] + fibo[i - 2]
}
return fibo[n]
}```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 n
}
var fibo = [Int](repeating: 0, count: n + 1)
fibo[1] = 1
for i in 2..<n + 1 {
fibo[i] = fibo[i - 1] + fibo[i - 2]
}
return fibo[n]
}
``````
```swift
// Test cases
print(fib(n: 10)) // 55
print(fib(n: 1)) // 1
print(fib(n: 8)) // 21
```func fib(n: Int) -> Int {
if n <= 1 {
return n
}
var fibo = [Int](repeating: 0, count: n + 1)
fibo[0] = 0
fibo[1] = 1
for i in 2..<n+1 {
fibo[i] = fibo[i - 1] + fibo[i - 2]
}
return fibo[n]
}```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 n
}
var fibo = [Int](repeating: 0, count: n + 1)
fibo[0] = 0
fibo[1] = 1
for i in 2..<n+1 {
fibo[i] = fibo[i - 1] + fibo[i - 2]
}
return fibo[n]
}
`````````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 n
}
var fibo = [Int](repeating: 0, count: n + 1)
fibo[0] = 0
fibo[1] = 1
for i in 2..<n+1 {
fibo[i] = fibo[i - 1] + fibo[i - 2]
}
return fibo[n]
}
```func fib(n: Int) -> Int {
if n <= 1 {
return n
}
var a = 0
var b = 1
for _ in 2...n {
let c = a + b
a = b
b = c
}
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 {
if n <= 1 {
return n
}
var a = 0
var b = 1
for _ in 2...n {
let c = a + b
a = b
b = c
}
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 {
if n <= 1 {
return n
}
var a = 0
var b = 1
for _ in 2...n {
let c = a + b
a = b
b = c
}
return b
}
```func fib(n: Int) -> Int {
if n <= 1 {
return n
}
var fibo = [Int](repeating: 0, count: n + 1)
fibo[1] = 1
for i in 2...n {
fibo[i] = fibo[i - 1] + fibo[i - 2]
}
return fibo[n]
}```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 n
}
var fibo = [Int](repeating: 0, count: n + 1)
fibo[1] = 1
for i in 2...n {
fibo[i] = fibo[i - 1] + fibo[i - 2]
}
return fibo[n]
}
print(fib(n: 10))
print(fib(n: 1))
print(fib(n: 8))
```
```
```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 n
}
var fibo = [Int](repeating: 0, count: n + 1)
fibo[1] = 1
for i in 2...n {
fibo[i] = fibo[i - 1] + fibo[i - 2]
}
return fibo[n]
}
print(fib(n: 10))
print(fib(n: 1))
print(fib(n: 8))
```func fib(n: Int) -> Int {
if n <= 1 {
return n
}
var fibo = [Int](repeating: 0, count: n + 1)
fibo[1] = 1
for i in 2..<n+1 {
fibo[i] = fibo[i - 1] + fibo[i - 2]
}
return fibo[n]
}```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 n
}
var fibo = [Int](repeating: 0, count: n + 1)
fibo[1] = 1
for i in 2..<n+1 {
fibo[i] = fibo[i - 1] + fibo[i - 2]
}
return fibo[n]
}
print(fib(n: 10))
print(fib(n: 1))
print(fib(n: 8))
``````
```python
# Return n-th Fibonacci number.
# fib(10) == 55
# fib(1) == 1
# fib(8) == 21
def fib(n):
if n <= 1:
return n
fibo = [0] * (n + 1)
fibo[1] = 1
for i in range(2, n + 1):
fibo[i] = fibo[i - 1] + fibo[i - 2]
return fibo[n]
print(fib(10))
print(fib(1))
print(fib(8))
```func fib(n: Int) -> Int {
if n <= 1 {
return n
}
var fibo = [Int](repeating: 0, count: n+1)
fibo[1] = 1
for i in 2...n {
fibo[i] = fibo[i-1] + fibo[i-2]
}
return fibo[n]
}```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 n
}
var fibo = [Int](repeating: 0, count: n+1)
fibo[1] = 1
for i in 2...n {
fibo[i] = fibo[i-1] + fibo[i-2]
}
return fibo[n]
}
`````````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 n
}
var fibo = [Int](repeating: 0, count: n+1)
fibo[1] = 1
for i in 2...n {
fibo[i] = fibo[i-1] + fibo[i-2]
}
return fibo[n]
}
```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
} else {
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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
// Test cases
print(correctBracketing(brackets: "<")) // false
print(correctBracketing(brackets: "<>")) // true
print(correctBracketing(brackets: "<<><>>")) // true
print(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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
`````````swift
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
// Test cases
print(correctBracketing(brackets: "<")) // false
print(correctBracketing(brackets: "<>")) // true
print(correctBracketing(brackets: "<<><>>")) // true
print(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
} else {
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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
```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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
``````
```swift
// Test cases
print(correctBracketing(brackets: "<")) // false
print(correctBracketing(brackets: "<>")) // true
print(correctBracketing(brackets: "<<><>>")) // true
print(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
} else {
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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
```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
} else {
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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
```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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
`````````swift
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
print(correctBracketing(brackets: "<")) // false
print(correctBracketing(brackets: "<>")) // true
print(correctBracketing(brackets: "<<><>>")) // true
print(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
} else {
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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
```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
} else {
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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
```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
} else {
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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
```func monotonic(l: [Int]) -> Bool {
return l == l.sorted() || l == l.sorted(by: >)
}```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 {
return l == l.sorted() || l == l.sorted(by: >)
}
`````````swift
// Test cases
print(monotonic(l: [1, 2, 4, 20])) // true
print(monotonic(l: [1, 20, 4, 10])) // false
print(monotonic(l: [4, 1, 0, -10])) // true
```func monotonic(l: [Int]) -> Bool {
return l == l.sorted() || l == l.sorted(by: >)
}```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 {
return l == l.sorted() || l == l.sorted(by: >)
}
`````````swift
// Test cases
print(monotonic(l: [1, 2, 4, 20])) // true
print(monotonic(l: [1, 20, 4, 10])) // false
print(monotonic(l: [4, 1, 0, -10])) // true
```func monotonic(l: [Int]) -> Bool {
return l.isSorted
}```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 {
return l.isSorted
}
`````````swift
// Test cases
print(monotonic(l: [1, 2, 4, 20])) // true
print(monotonic(l: [1, 20, 4, 10])) // false
print(monotonic(l: [4, 1, 0, -10])) // true
```return l.isSorted // value of type '[Int]' has no member 'isSorted'func monotonic(l: [Int]) -> Bool {
return l == l.sorted() || l == l.reversed()
}```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 {
return l == l.sorted() || l == l.reversed()
}
`````````swift
// Test cases
print(monotonic(l: [1, 2, 4, 20])) // true
print(monotonic(l: [1, 20, 4, 10])) // false
print(monotonic(l: [4, 1, 0, -10])) // true
``` // XCTAssertTrue failedfunc monotonic(l: [Int]) -> Bool {
return l == l.sorted() || l == l.reversed()
}```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 {
return l == l.sorted() || l == l.reversed()
}
`````````swift
// Test cases
print(monotonic(l: [1, 2, 4, 20])) // true
print(monotonic(l: [1, 20, 4, 10])) // false
print(monotonic(l: [4, 1, 0, -10])) // true
``` // XCTAssertTrue failedfunc monotonic(l: [Int]) -> Bool {
return l == l.sorted() || l == l.sorted(by: >)
}```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 {
return l == l.sorted() || l == l.sorted(by: >)
}
`````````swift
// Test cases
print(monotonic(l: [1, 2, 4, 20])) // true
print(monotonic(l: [1, 20, 4, 10])) // false
print(monotonic(l: [4, 1, 0, -10])) // true
```func monotonic(l: [Int]) -> Bool {
return l == l.sorted() || l == l.reversed()
}```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 {
return l == l.sorted() || l == l.reversed()
}
`````````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 {
return l == l.sorted() || l == l.reversed()
}
``` // XCTAssertTrue failedfunc monotonic(l: [Int]) -> Bool {
return l == l.sorted() || l == l.reversed()
}```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 {
return l == l.sorted() || l == l.reversed()
}
`````````swift
func monotonic(l: [Int]) -> Bool {
return l == l.sorted() || l == l.reversed()
}
// Test cases
print(monotonic(l: [1, 2, 4, 20])) // true
print(monotonic(l: [1, 20, 4, 10])) // false
print(monotonic(l: [4, 1, 0, -10])) // true
``` // XCTAssertTrue failedfunc monotonic(l: [Int]) -> Bool {
return l == l.sorted() || l == l.reversed()
}```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 {
return l == l.sorted() || l == l.reversed()
}
`````````swift
func monotonic(l: [Int]) -> Bool {
return l == l.sorted() || l == l.reversed()
}
print(monotonic(l: [1, 2, 4, 20])) // true
print(monotonic(l: [1, 20, 4, 10])) // false
print(monotonic(l: [4, 1, 0, -10])) // true
``` // XCTAssertTrue failedfunc monotonic(l: [Int]) -> Bool {
return l == l.sorted() || l == l.sorted(by: >)
}```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 {
return l == l.sorted() || l == l.sorted(by: >)
}
`````````swift
// Test cases
print(monotonic(l: [1, 2, 4, 20])) // true
print(monotonic(l: [1, 20, 4, 10])) // false
print(monotonic(l: [4, 1, 0, -10])) // true
```func common(l1: [Int], l2: [Int]) -> [Int] {
let set1 = Set(l1)
let set2 = Set(l2)
let commonSet = set1.intersection(set2)
let commonArray = Array(commonSet)
commonArray.sort()
return commonArray
}```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] {
let set1 = Set(l1)
let set2 = Set(l2)
let commonSet = set1.intersection(set2)
let commonArray = Array(commonSet)
commonArray.sort()
return commonArray
}
`````````python
def common(l1, l2):
set1 = set(l1)
set2 = set(l2)
commonSet = set1.intersection(set2)
commonList = list(commonSet)
commonList.sort()
return commonList
```commonArray.sort() // cannot use mutating member on immutable value: 'commonArray' is a 'let' constantfunc common(l1: [Int], l2: [Int]) -> [Int] {
let commonSet = Set(l1).intersection(Set(l2))
let commonArray = Array(commonSet)
commonArray.sort()
return commonArray
}```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] {
let commonSet = Set(l1).intersection(Set(l2))
let commonArray = Array(commonSet)
commonArray.sort()
return commonArray
}
`````````python
def common(l1, l2):
commonSet = set(l1).intersection(set(l2))
commonList = list(commonSet)
commonList.sort()
return commonList
```commonArray.sort() // cannot use mutating member on immutable value: 'commonArray' is a 'let' constantfunc common(l1: [Int], l2: [Int]) -> [Int] {
let set1 = Set(l1)
let set2 = Set(l2)
let intersection = set1.intersection(set2)
let sortedIntersection = Array(intersection).sorted()
return sortedIntersection
}```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] {
let set1 = Set(l1)
let set2 = Set(l2)
let intersection = set1.intersection(set2)
let sortedIntersection = Array(intersection).sorted()
return sortedIntersection
}
print(common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]))
print(common(l1: [5, 3, 2, 8], l2: [3, 2]))
`````````python
def common(l1, l2):
set1 = set(l1)
set2 = set(l2)
intersection = set1.intersection(set2)
sorted_intersection = sorted(list(intersection))
return sorted_intersection
print(common([1, 4, 3, 34, 653, 2, 5], [5, 7, 1, 5, 9, 653, 121]))
print(common([5, 3, 2, 8], [3, 2]))
```func common(l1: [Int], l2: [Int]) -> [Int] {
let set1 = Set(l1)
let set2 = Set(l2)
let commonSet = set1.intersection(set2)
let commonArray = Array(commonSet)
commonArray.sort()
return commonArray
}```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] {
let set1 = Set(l1)
let set2 = Set(l2)
let commonSet = set1.intersection(set2)
let commonArray = Array(commonSet)
commonArray.sort()
return commonArray
}
`````````python
def common(l1, l2):
set1 = set(l1)
set2 = set(l2)
commonSet = set1.intersection(set2)
commonList = list(commonSet)
commonList.sort()
return commonList
```commonArray.sort() // cannot use mutating member on immutable value: 'commonArray' is a 'let' constantfunc common(l1: [Int], l2: [Int]) -> [Int] {
let set1 = Set(l1)
let set2 = Set(l2)
let commonSet = set1.intersection(set2)
let commonArray = Array(commonSet)
commonArray.sort()
return commonArray
}```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] {
let set1 = Set(l1)
let set2 = Set(l2)
let commonSet = set1.intersection(set2)
let commonArray = Array(commonSet)
commonArray.sort()
return commonArray
}
``````
```swift
func common(l1: [Int], l2: [Int]) -> [Int] {
let set1 = Set(l1)
let set2 = Set(l2)
let commonSet = set1.intersection(set2)
let commonArray = Array(commonSet)
commonArray.sort()
return commonArray
}
print(common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121]))
print(common(l1: [5, 3, 2, 8], l2: [3, 2]))
```commonArray.sort() // cannot use mutating member on immutable value: 'commonArray' is a 'let' constantfunc common(l1: [Int], l2: [Int]) -> [Int] {
let commonSet = Set(l1).intersection(Set(l2))
let commonArray = Array(commonSet)
commonArray.sort()
return commonArray
}```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] {
let commonSet = Set(l1).intersection(Set(l2))
let commonArray = Array(commonSet)
commonArray.sort()
return commonArray
}
``````
```swift
// Test cases
print(common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121])) // [1, 5, 653]
print(common(l1: [5, 3, 2, 8], l2: [3, 2])) // [2, 3]
```commonArray.sort() // cannot use mutating member on immutable value: 'commonArray' is a 'let' constantfunc common(l1: [Int], l2: [Int]) -> [Int] {
let set1 = Set(l1)
let set2 = Set(l2)
let commonSet = set1.intersection(set2)
let commonArray = Array(commonSet)
commonArray.sort()
return commonArray
}```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] {
let set1 = Set(l1)
let set2 = Set(l2)
let commonSet = set1.intersection(set2)
let commonArray = Array(commonSet)
commonArray.sort()
return commonArray
}
`````````python
def common(l1, l2):
set1 = set(l1)
set2 = set(l2)
commonSet = set1.intersection(set2)
commonList = list(commonSet)
commonList.sort()
return commonList
```commonArray.sort() // cannot use mutating member on immutable value: 'commonArray' is a 'let' constantfunc common(l1: [Int], l2: [Int]) -> [Int] {
let set1 = Set(l1)
let set2 = Set(l2)
let commonSet = set1.intersection(set2)
let commonArray = Array(commonSet)
commonArray.sort()
return commonArray
}```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] {
let set1 = Set(l1)
let set2 = Set(l2)
let commonSet = set1.intersection(set2)
let commonArray = Array(commonSet)
commonArray.sort()
return commonArray
}
`````````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] {
let set1 = Set(l1)
let set2 = Set(l2)
let commonSet = set1.intersection(set2)
let commonArray = Array(commonSet)
commonArray.sort()
return commonArray
}
common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121])
```commonArray.sort() // cannot use mutating member on immutable value: 'commonArray' is a 'let' constantfunc common(l1: [Int], l2: [Int]) -> [Int] {
let set1 = Set(l1)
let set2 = Set(l2)
let commonSet = set1.intersection(set2)
return Array(commonSet).sorted()
}```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] {
let set1 = Set(l1)
let set2 = Set(l2)
let commonSet = set1.intersection(set2)
return Array(commonSet).sorted()
}
`````````swift
// Test cases
print(common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121])) // [1, 5, 653]
print(common(l1: [5, 3, 2, 8], l2: [3, 2])) // [2, 3]
```func common(l1: [Int], l2: [Int]) -> [Int] {
let commonSet = Set(l1).intersection(Set(l2))
let sortedCommon = Array(commonSet).sorted()
return sortedCommon
}```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] {
let commonSet = Set(l1).intersection(Set(l2))
let sortedCommon = Array(commonSet).sorted()
return sortedCommon
}
``````
```swift
// Test cases
print(common(l1: [1, 4, 3, 34, 653, 2, 5], l2: [5, 7, 1, 5, 9, 653, 121])) // [1, 5, 653]
print(common(l1: [5, 3, 2, 8], l2: [3, 2])) // [2, 3]
```func largestPrimeFactor(n: Int) -> Int {
var num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}```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 num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}
``````
```swift
// Test the largestPrimeFactor function
print(largestPrimeFactor(n: 13195)) // Output: 29
print(largestPrimeFactor(n: 2048)) // Output: 2
```func largestPrimeFactor(n: Int) -> Int {
var num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}```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 num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}
``````
```swift
// Test the function
print(largestPrimeFactor(n: 13195)) // Output: 29
print(largestPrimeFactor(n: 2048)) // Output: 2
```func largestPrimeFactor(n: Int) -> Int {
var num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}```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 num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}
``````
```swift
// Test the function
print(largestPrimeFactor(n: 13195)) // Output: 29
print(largestPrimeFactor(n: 2048)) // Output: 2
```func largestPrimeFactor(n: Int) -> Int {
var num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}```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 num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}
``````
```swift
// Test the largestPrimeFactor function
print(largestPrimeFactor(n: 13195)) // Output: 29
print(largestPrimeFactor(n: 2048)) // Output: 2
```func largestPrimeFactor(n: Int) -> Int {
var num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}```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 num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}
``````
```swift
// Test the largestPrimeFactor function
print(largestPrimeFactor(n: 13195)) // Output: 29
print(largestPrimeFactor(n: 2048)) // Output: 2
```func largestPrimeFactor(n: Int) -> Int {
var num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}```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 num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}
``````
```swift
// Test the function
print(largestPrimeFactor(n: 13195)) // Output: 29
print(largestPrimeFactor(n: 2048)) // Output: 2
```func largestPrimeFactor(n: Int) -> Int {
var num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}```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 num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}
`````````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 num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}
largestPrimeFactor(n: 13195)
```func largestPrimeFactor(n: Int) -> Int {
var num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}```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 num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}
`````````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 num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}
largestPrimeFactor(n: 13195)
```func largestPrimeFactor(n: Int) -> Int {
var num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}```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 num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}
`````````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 num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}
largestPrimeFactor(n: 13195)
```func largestPrimeFactor(n: Int) -> Int {
var num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}```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 num = n
var factor = 2
while factor * factor <= num {
if num % factor == 0 {
num /= factor
} else {
factor += 1
}
}
return num
}
``````
```swift
// Test the function
print(largestPrimeFactor(n: 13195)) // Output: 29
print(largestPrimeFactor(n: 2048)) // Output: 2
```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
}
`````````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
}
```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
}
`````````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
}
```func sumToN(n: Int) -> Int {
var sum = 0
for i in 1...n {
sum += i
}
return sum
}
func sumToNInPlace(n: Int) -> Int {
return n * (n + 1) / 2
}
func sumToNInPlaceRecursive(n: Int) -> Int {
if n == 1 {
return 1
} else {
return n + sumToNInPlaceRecursive(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_in_place is a function that sums numbers from 1 to n in place.
// sumToNInPlace(n: 30) == 465
// sumToNInPlace(n: 100) == 5050
// sumToNInPlace(n: 5) == 15
// sumToNInPlace(n: 10) == 55
// sumToNInPlace(n: 1) == 1
func sumToNInPlace(n: Int) -> Int {
return n * (n + 1) / 2
}
// sum_to_n_in_place_recursive is a function that sums numbers from 1 to n in place recursively.
// sumToNInPlaceRecursive(n: 30) == 465
// sumToNInPlaceRecursive(n: 100) == 5050
// sumToNInPlaceRecursive(n: 5) == 15
// sumToNInPlaceRecursive(n: 10) == 55
// sumToNInPlaceRecursive(n: 1) == 1
func sumToNInPlaceRecursive(n: Int) -> Int {
if n == 1 {
return 1
} else {
return n + sumToNInPlaceRecursive(n: n - 1)
}
}
`````````python
def sum_to_n(n):
sum = 0
for i in range(1, n+1):
sum += i
return sum
def sum_to_n_in_place(n):
return n * (n + 1) // 2
def sum_to_n_in_place_recursive(n):
if n == 1:
return 1
else:
return n + sum_to_n_in_place_recursive(n - 1)
# Test cases
print(sum_to_n(30)) # 465
print(sum_to_n(100)) # 5050
print(sum_to_n(5)) # 15
print(sum_to_n(10)) # 55
print(sum_to_n(1)) # 1
print(sum_to_n_in_place(30)) # 465
print(sum_to_n_in_place(100)) # 5050
print(sum_to_n_in_place(5)) # 15
print(sum_to_n_in_place(10)) # 55
print(sum_to_n_in_place(1)) # 1
print(sum_to_n_in_place_recursive(30)) # 465
print(sum_to_n_in_place_recursive(100)) # 5050
print(sum_to_n_in_place_recursive(5)) # 15
print(sum_to_n_in_place_recursive(10)) # 55
print(sum_to_n_in_place_recursive(1)) # 1
```func sumToN(n: Int) -> Int {
var sum = 0
for i in 1...n {
sum += i
}
return sum
}
func sumToNV2(n: Int) -> Int {
return n * (n + 1) / 2
}```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_v2 is a function that sums numbers from 1 to n using the formula n * (n + 1) / 2.
// sumToNV2(n: 30) == 465
// sumToNV2(n: 100) == 5050
// sumToNV2(n: 5) == 15
// sumToNV2(n: 10) == 55
// sumToNV2(n: 1) == 1
func sumToNV2(n: Int) -> Int {
return n * (n + 1) / 2
}
// Test cases
print(sumToN(n: 30))
print(sumToN(n: 100))
print(sumToN(n: 5))
print(sumToN(n: 10))
print(sumToN(n: 1))
print(sumToNV2(n: 30))
print(sumToNV2(n: 100))
print(sumToNV2(n: 5))
print(sumToNV2(n: 10))
print(sumToNV2(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_v2 is a function that sums numbers from 1 to n using the formula n * (n + 1) / 2.
// sumToNV2(n: 30) == 465
// sumToNV2(n: 100) == 5050
// sumToNV2(n: 5) == 15
// sumToNV2(n: 10) == 55
// sumToNV2(n: 1) == 1
func sumToNV2(n: Int) -> Int {
return n * (n + 1) / 2
}
// Test cases
print(sumToN(n: 30))
print(sumToN(n: 100))
print(sumToN(n: 5))
print(sumToN(n: 10))
print(sumToN(n: 1))
print(sumToNV2(n: 30))
print(sumToNV2(n: 100))
print(sumToNV2(n: 5))
print(sumToNV2(n: 10))
print(sumToNV2(n: 1))
```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
}
`````````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
}
```func sumToN(n: Int) -> Int {
var sum = 0
for i in 1...n {
sum += i
}
return sum
}
func sumToNOptimized(n: Int) -> Int {
return n * (n + 1) / 2
}```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_optimized is a function that sums numbers from 1 to n in an optimized way.
// sumToNOptimized(n: 30) == 465
// sumToNOptimized(n: 100) == 5050
// sumToNOptimized(n: 5) == 15
// sumToNOptimized(n: 10) == 55
// sumToNOptimized(n: 1) == 1
func sumToNOptimized(n: Int) -> Int {
return n * (n + 1) / 2
}
`````````python
def sum_to_n(n):
sum = 0
for i in range(1, n+1):
sum += i
return sum
def sum_to_n_optimized(n):
return n * (n + 1) // 2
# Test cases
print(sum_to_n(30)) # 465
print(sum_to_n(100)) # 5050
print(sum_to_n(5)) # 15
print(sum_to_n(10)) # 55
print(sum_to_n(1)) # 1
print(sum_to_n_optimized(30)) # 465
print(sum_to_n_optimized(100)) # 5050
print(sum_to_n_optimized(5)) # 15
print(sum_to_n_optimized(10)) # 55
print(sum_to_n_optimized(1)) # 1
```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
}
`````````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
}
```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
}
`````````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
}
```
```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
}
```
```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
}
```
```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
}
```
```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
}
```
```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
}
```
```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
forfunc 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
}
`````````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
}
```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
}
`````````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
}
```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
} else {
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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
```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
} else {
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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
```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
} else {
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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
```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
} else {
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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
```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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
`````````swift
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
print(correctBracketing(brackets: "(")) // false
print(correctBracketing(brackets: "()")) // true
print(correctBracketing(brackets: "(()())")) // true
print(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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
``````
```python
# 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
def correctBracketing(brackets):
stack = []
for bracket in brackets:
if bracket == "(":
stack.append(bracket)
elif bracket == ")":
if not stack:
return False
else:
stack.pop()
return not stack
```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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
``````
```python
# brackets is a string of "(" and ")".
# return true if every opening bracket has a corresponding closing bracket.
# correctBracketing("(") == False
# correctBracketing("()") == True
# correctBracketing("(()())") == True
# correctBracketing(")(()") == False
def correctBracketing(brackets):
stack = []
for bracket in brackets:
if bracket == "(":
stack.append(bracket)
elif bracket == ")":
if not stack:
return False
else:
stack.pop()
return not stack
```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
} else {
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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
```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
} else {
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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
```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
} else {
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
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
```func derivative(xs: [Int]) -> [Int] {
var result = [Int]()
for i in 1...xs.count - 1 {
result.append(i * xs[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 - 1 {
result.append(i * xs[i])
}
return result
}
``````
```swift
func derivative(xs: [Int]) -> [Int] {
var result = [Int]()
for i in 1...xs.count - 1 {
result.append(i * xs[i])
}
return result
}
// Test cases
print(derivative(xs: [3, 1, 2, 4, 5])) // [1, 4, 12, 20]
print(derivative(xs: [1, 2, 3])) // [2, 6]
``` // Fatal error: Range requires lowerBound <= upperBoundfunc derivative(xs: [Int]) -> [Int] {
var result = [Int]()
for i in 1...xs.count - 1 {
result.append(i * xs[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 - 1 {
result.append(i * xs[i])
}
return result
}
`````````swift
func derivative(xs: [Int]) -> [Int] {
var result = [Int]()
for i in 1...xs.count - 1 {
result.append(i * xs[i])
}
return result
}
// Test cases
print(derivative(xs: [3, 1, 2, 4, 5])) // [1, 4, 12, 20]
print(derivative(xs: [1, 2, 3])) // [2, 6]
``` // Fatal error: Range requires lowerBound <= upperBoundfunc derivative(xs: [Int]) -> [Int] {
var result = [Int]()
for i in 1...xs.count - 1 {
result.append(i * xs[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 - 1 {
result.append(i * xs[i])
}
return result
}
``````
```swift
func derivative(xs: [Int]) -> [Int] {
var result = [Int]()
for i in 1...xs.count - 1 {
result.append(i * xs[i])
}
return result
}
print(derivative(xs: [3, 1, 2, 4, 5])) // Output: [1, 4, 12, 20]
print(derivative(xs: [1, 2, 3])) // Output: [2, 6]
``` // Fatal error: Range requires lowerBound <= upperBoundfunc derivative(xs: [Int]) -> [Int] {
var result = [Int]()
for i in 1...xs.count - 1 {
result.append(i * xs[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 - 1 {
result.append(i * xs[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 - 1 {
result.append(i * xs[i])
}
return result
}
// Test cases
print(derivative(xs: [3, 1, 2, 4, 5])) // [1, 4, 12, 20]
print(derivative(xs: [1, 2, 3])) // [2, 6]
``` // Fatal error: Range requires lowerBound <= upperBoundfunc derivative(xs: [Int]) -> [Int] {
var result = [Int]()
for i in 1...xs.count - 1 {
result.append(i * xs[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 - 1 {
result.append(i * xs[i])
}
return result
}
``````
```swift
func derivative(xs: [Int]) -> [Int] {
var result = [Int]()
for i in 1...xs.count - 1 {
result.append(i * xs[i])
}
return result
}
derivative(xs: [3, 1, 2, 4, 5])
``` // Fatal error: Range requires lowerBound <= upperBoundfunc derivative(xs: [Int]) -> [Int] {
var result = [Int]()
for i in 1...xs.count - 1 {
result.append(i * xs[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 - 1 {
result.append(i * xs[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 - 1 {
result.append(i * xs[i])
}
return result
}
// Test cases
print(derivative(xs: [3, 1, 2, 4, 5])) // [1, 4, 12, 20]
print(derivative(xs: [1, 2, 3])) // [2, 6]
``` // Fatal error: Range requires lowerBound <= upperBoundfunc derivative(xs: [Int]) -> [Int] {
var result = [Int]()
for i in 1...xs.count - 1 {
result.append(i * xs[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 - 1 {
result.append(i * xs[i])
}
return result
}
``````
```python
# 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]
def derivative(xs):
result = []
for i in range(1, len(xs)):
result.append(i * xs[i])
return result
``` // Fatal error: Range requires lowerBound <= upperBoundfunc derivative(xs: [Int]) -> [Int] {
var result = [Int]()
for i in 1...xs.count - 1 {
result.append(i * xs[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 - 1 {
result.append(i * xs[i])
}
return result
}
``````
```python
def derivative(xs):
return [i*coeff for i, coeff in enumerate(xs[1:])]
``` // Fatal error: Range requires lowerBound <= upperBoundfunc derivative(xs: [Int]) -> [Int] {
var result = [Int]()
for i in 1...xs.count - 1 {
result.append(i * xs[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 - 1 {
result.append(i * xs[i])
}
return result
}
``````
```swift
func derivative(xs: [Int]) -> [Int] {
var result = [Int]()
for i in 1...xs.count - 1 {
result.append(i * xs[i])
}
return result
}
derivative(xs: [3, 1, 2, 4, 5])
``` // Fatal error: Range requires lowerBound <= upperBoundfunc derivative(xs: [Int]) -> [Int] {
var result = [Int]()
for i in 1...xs.count - 1 {
result.append(i * xs[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 - 1 {
result.append(i * xs[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 - 1 {
result.append(i * xs[i])
}
return result
}
// Test cases
print(derivative(xs: [3, 1, 2, 4, 5])) // [1, 4, 12, 20]
print(derivative(xs: [1, 2, 3])) // [2, 6]
``` // Fatal error: Range requires lowerBound <= upperBoundfunc fibfib(n: Int) -> Int {
if n == 0 || n == 1 {
return 0
} else if n == 2 {
return 1
} else {
var fibfibNumbers = [Int](repeating: 0, count: n+1)
fibfibNumbers[0] = 0
fibfibNumbers[1] = 0
fibfibNumbers[2] = 1
for i in 3...n {
fibfibNumbers[i] = fibfibNumbers[i-1] + fibfibNumbers[i-2] + fibfibNumbers[i-3]
}
return fibfibNumbers[n]
}
}```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 || n == 1 {
return 0
} else if n == 2 {
return 1
} else {
var fibfibNumbers = [Int](repeating: 0, count: n+1)
fibfibNumbers[0] = 0
fibfibNumbers[1] = 0
fibfibNumbers[2] = 1
for i in 3...n {
fibfibNumbers[i] = fibfibNumbers[i-1] + fibfibNumbers[i-2] + fibfibNumbers[i-3]
}
return fibfibNumbers[n]
}
}
print(fibfib(n: 1)) // 0
print(fibfib(n: 5)) // 4
print(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 {
var fibfibNumbers = [0, 0, 1]
for i in 3...n {
let nextFibfibNumber = fibfibNumbers[0] + fibfibNumbers[1] + fibfibNumbers[2]
fibfibNumbers.removeFirst()
fibfibNumbers.append(nextFibfibNumber)
}
return fibfibNumbers.last() ?? 0
}
}```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 {
var fibfibNumbers = [0, 0, 1]
for i in 3...n {
let nextFibfibNumber = fibfibNumbers[0] + fibfibNumbers[1] + fibfibNumbers[2]
fibfibNumbers.removeFirst()
fibfibNumbers.append(nextFibfibNumber)
}
return fibfibNumbers.last() ?? 0
}
}
print(fibfib(n: 1)) // 0
print(fibfib(n: 5)) // 4
print(fibfib(n: 8)) // 24
`````````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 {
var fibfibNumbers = [0, 0, 1]
for i in 3...n {
let nextFibfibNumber = fibfibNumbers[0] + fibfibNumbers[1] + fibfibNumbers[2]
fibfibNumbers.removeFirst()
fibfibNumbers.append(nextFibfibNumber)
}
return fibfibNumbers.last() ?? 0
}
}
print(fibfib(n: 1)) // 0
print(fibfib(n: 5)) // 4
print(fibfib(n: 8)) // 24
```return fibfibNumbers.last() ?? 0 // cannot call value of non-function type 'Int?'func fibfib(n: Int) -> Int {
if n == 0 || n == 1 {
return 0
}
if n == 2 {
return 1
}
var fibfibNMinusThree = 0
var fibfibNMinusTwo = 0
var fibfibNMinusOne = 1
var fibfibN = 0
for _ in 3...n {
fibfibN = fibfibNMinusOne + fibfibNMinusTwo + fibfibNMinusThree
fibfibNMinusThree = fibfibNMinusTwo
fibfibNMinusTwo = fibfibNMinusOne
fibfibNMinusOne = fibfibN
}
return fibfibN
}```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 || n == 1 {
return 0
}
if n == 2 {
return 1
}
var fibfibNMinusThree = 0
var fibfibNMinusTwo = 0
var fibfibNMinusOne = 1
var fibfibN = 0
for _ in 3...n {
fibfibN = fibfibNMinusOne + fibfibNMinusTwo + fibfibNMinusThree
fibfibNMinusThree = fibfibNMinusTwo
fibfibNMinusTwo = fibfibNMinusOne
fibfibNMinusOne = fibfibN
}
return fibfibN
}
print(fibfib(n: 1)) // 0
print(fibfib(n: 5)) // 4
print(fibfib(n: 8)) // 24
``````func fibfib(n: Int) -> Int {
if n == 0 || n == 1 {
return 0
} else if n == 2 {
return 1
} else {
var fibfibNMinusThree = 0
var fibfibNMinusTwo = 0
var fibfibNMinusOne = 1
var fibfibN = 0
for _ in 3...n {
fibfibN = fibfibNMinusOne + fibfibNMinusTwo + fibfibNMinusThree
fibfibNMinusThree = fibfibNMinusTwo
fibfibNMinusTwo = fibfibNMinusOne
fibfibNMinusOne = fibfibN
}
return fibfibN
}
}```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 || n == 1 {
return 0
} else if n == 2 {
return 1
} else {
var fibfibNMinusThree = 0
var fibfibNMinusTwo = 0
var fibfibNMinusOne = 1
var fibfibN = 0
for _ in 3...n {
fibfibN = fibfibNMinusOne + fibfibNMinusTwo + fibfibNMinusThree
fibfibNMinusThree = fibfibNMinusTwo
fibfibNMinusTwo = fibfibNMinusOne
fibfibNMinusOne = fibfibN
}
return fibfibN
}
}
print(fibfib(n: 1)) // 0
print(fibfib(n: 5)) // 4
print(fibfib(n: 8)) // 24
``````func fibfib(n: Int) -> Int {
if n == 0 || n == 1 {
return 0
}
if n == 2 {
return 1
}
var fibfibNMinusThree = 0
var fibfibNMinusTwo = 0
var fibfibNMinusOne = 1
var fibfibN = 0
for _ in 3...n {
fibfibN = fibfibNMinusOne + fibfibNMinusTwo + fibfibNMinusThree
fibfibNMinusThree = fibfibNMinusTwo
fibfibNMinusTwo = fibfibNMinusOne
fibfibNMinusOne = fibfibN
}
return fibfibN
}```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 || n == 1 {
return 0
}
if n == 2 {
return 1
}
var fibfibNMinusThree = 0
var fibfibNMinusTwo = 0
var fibfibNMinusOne = 1
var fibfibN = 0
for _ in 3...n {
fibfibN = fibfibNMinusOne + fibfibNMinusTwo + fibfibNMinusThree
fibfibNMinusThree = fibfibNMinusTwo
fibfibNMinusTwo = fibfibNMinusOne
fibfibNMinusOne = fibfibN
}
return fibfibN
}
print(fibfib(n: 1)) // 0
print(fibfib(n: 5)) // 4
print(fibfib(n: 8)) // 24
`````````python
def fibfib(n):
if n == 0 or n == 1:
return 0
if n == 2:
return 1
fibfibNMinusThree = 0
fibfibNMinusTwo = 0
fibfibNMinusOne = 1
fibfibN = 0
for _ in range(3, n+1):
fibfibN = fibfibNMinusOne + fibfibNMinusTwo + fibfibNMinusThree
fibfibNMinusThree = fibfibNMinusTwo
fibfibNMinusTwo = fibfibNMinusOne
fibfibNMinusOne = fibfibN
return fibfibN
print(fibfib(1)) # 0
print(fibfib(5)) # 4
print(fibfib(8)) # 24
```func fibfib(n: Int) -> Int {
if n == 0 || n == 1 {
return 0
}
if n == 2 {
return 1
}
var fibfibs = [Int](repeating: 0, count: n+1)
fibfibs[2] = 1
for i in 3...n {
fibfibs[i] = fibfibs[i-1] + fibfibs[i-2] + fibfibs[i-3]
}
return fibfibs[n]
}```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 || n == 1 {
return 0
}
if n == 2 {
return 1
}
var fibfibs = [Int](repeating: 0, count: n+1)
fibfibs[2] = 1
for i in 3...n {
fibfibs[i] = fibfibs[i-1] + fibfibs[i-2] + fibfibs[i-3]
}
return fibfibs[n]
}
print(fibfib(n: 1)) // 0
print(fibfib(n: 5)) // 4
print(fibfib(n: 8)) // 24
`````````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 || n == 1 {
return 0
}
if n == 2 {
return 1
}
var fibfibs = [Int](repeating: 0, count: n+1)
fibfibs[2] = 1
for i in 3...n {
fibfibs[i] = fibfibs[i-1] + fibfibs[i-2] + fibfibs[i-3]
}
return fibfibs[n]
}
print(fibfib(n: 1)) // 0
print(fibfib(n: 5)) // 4
print(fibfib(n: 8)) // 24
```func fibfib(n: Int) -> Int {
if n == 0 || n == 1 {
return 0
}
if n == 2 {
return 1
}
var fibfibNumbers = [Int](repeating: 0, count: n+1)
fibfibNumbers[2] = 1
for i in 3...n {
fibfibNumbers[i] = fibfibNumbers[i-1] + fibfibNumbers[i-2] + fibfibNumbers[i-3]
}
return fibfibNumbers[n]
}```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 || n == 1 {
return 0
}
if n == 2 {
return 1
}
var fibfibNumbers = [Int](repeating: 0, count: n+1)
fibfibNumbers[2] = 1
for i in 3...n {
fibfibNumbers[i] = fibfibNumbers[i-1] + fibfibNumbers[i-2] + fibfibNumbers[i-3]
}
return fibfibNumbers[n]
}
print(fibfib(n: 1)) // 0
print(fibfib(n: 5)) // 4
print(fibfib(n: 8)) // 24
``````func fibfib(n: Int) -> Int {
if n == 0 || n == 1 {
return 0
} else if n == 2 {
return 1
} else {
var fibfibNumbers = [Int](repeating: 0, count: n+1)
fibfibNumbers[0] = 0
fibfibNumbers[1] = 0
fibfibNumbers[2] = 1
for i in 3...n {
fibfibNumbers[i] = fibfibNumbers[i-1] + fibfibNumbers[i-2] + fibfibNumbers[i-3]
}
return fibfibNumbers[n]
}
}```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 || n == 1 {
return 0
} else if n == 2 {
return 1
} else {
var fibfibNumbers = [Int](repeating: 0, count: n+1)
fibfibNumbers[0] = 0
fibfibNumbers[1] = 0
fibfibNumbers[2] = 1
for i in 3...n {
fibfibNumbers[i] = fibfibNumbers[i-1] + fibfibNumbers[i-2] + fibfibNumbers[i-3]
}
return fibfibNumbers[n]
}
}
print(fibfib(n: 1)) // 0
print(fibfib(n: 5)) // 4
print(fibfib(n: 8)) // 24
``````func fibfib(n: Int) -> Int {
if n == 0 || n == 1 {
return 0
} else if n == 2 {
return 1
} else {
var fibfibNMinusThree = 0
var fibfibNMinusTwo = 0
var fibfibNMinusOne = 1
var fibfibN = 0
for _ in 3...n {
fibfibN = fibfibNMinusOne + fibfibNMinusTwo + fibfibNMinusThree
fibfibNMinusThree = fibfibNMinusTwo
fibfibNMinusTwo = fibfibNMinusOne
fibfibNMinusOne = fibfibN
}
return fibfibN
}
}```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 || n == 1 {
return 0
} else if n == 2 {
return 1
} else {
var fibfibNMinusThree = 0
var fibfibNMinusTwo = 0
var fibfibNMinusOne = 1
var fibfibN = 0
for _ in 3...n {
fibfibN = fibfibNMinusOne + fibfibNMinusTwo + fibfibNMinusThree
fibfibNMinusThree = fibfibNMinusTwo
fibfibNMinusTwo = fibfibNMinusOne
fibfibNMinusOne = fibfibN
}
return fibfibN
}
}
print(fibfib(n: 1)) // 0
print(fibfib(n: 5)) // 4
print(fibfib(n: 8)) // 24
``````func fibfib(n: Int) -> Int {
if n == 0 || n == 1 {
return 0
}
if n == 2 {
return 1
}
var fibfibs = [Int](repeating: 0, count: n+1)
fibfibs[2] = 1
for i in 3...n {
fibfibs[i] = fibfibs[i-1] + fibfibs[i-2] + fibfibs[i-3]
}
return fibfibs[n]
}```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 || n == 1 {
return 0
}
if n == 2 {
return 1
}
var fibfibs = [Int](repeating: 0, count: n+1)
fibfibs[2] = 1
for i in 3...n {
fibfibs[i] = fibfibs[i-1] + fibfibs[i-2] + fibfibs[i-3]
}
return fibfibs[n]
}
fibfib(n: 1)
fibfib(n: 5)
fibfib(n: 8)
``````
```python
def fibfib(n):
if n == 0 or n == 1:
return 0
if n == 2:
return 1
fibfibs = [0] * (n+1)
fibfibs[2] = 1
for i in range(3, n+1):
fibfibs[i] = fibfibs[i-1] + fibfibs[i-2] + fibfibs[i-3]
return fibfibs[n]
fibfib(1), fibfib(5), fibfib(8)
```func vowelsCount(s: String) -> Int {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
count += 1
}
}
if s.hasSuffix("y") {
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: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
count += 1
}
}
if s.hasSuffix("y") {
count += 1
}
return count
}
`````````swift
// Test the function vowelsCount
print(vowelsCount(s: "abcde")) // 2
print(vowelsCount(s: "ACEDY")) // 3
``` // XCTAssertTrue failedfunc vowelsCount(s: String) -> Int {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
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: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
count += 1
}
}
return count
}
`````````python
def vowels_count(s: str) -> int:
vowels = {'a', 'e', 'i', 'o', 'u', 'y'}
count = 0
for char in s.lower():
if char in vowels:
count += 1
return count
print(vowels_count(s="abcde")) # 2
print(vowels_count(s="ACEDY")) # 3
``` // XCTAssertTrue failedfunc vowelsCount(s: String) -> Int {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
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: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
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: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
count += 1
}
}
return count
}
// Test cases
print(vowelsCount(s: "abcde")) // 2
print(vowelsCount(s: "ACEDY")) // 3
``` // XCTAssertTrue failedfunc vowelsCount(s: String) -> Int {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
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: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
count += 1
}
}
return count
}
``````
```python
def vowels_count(s: str) -> int:
vowels = {'a', 'e', 'i', 'o', 'u', 'y'}
count = 0
for char in s.lower():
if char in vowels:
count += 1
return count
print(vowels_count(s="abcde")) # 2
print(vowels_count(s="ACEDY")) # 3
``` // XCTAssertTrue failedfunc vowelsCount(s: String) -> Int {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
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: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
count += 1
}
}
return count
}
``````
```python
# 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
def vowels_count(s):
vowels = set(['a', 'e', 'i', 'o', 'u', 'y'])
count = 0
for char in s.lower():
if char in vowels:
count += 1
return count
``` // XCTAssertTrue failedfunc vowelsCount(s: String) -> Int {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
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: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
count += 1
}
}
return count
}
``````
```swift
// Testing the function vowelsCount
print(vowelsCount(s: "abcde")) // 2
print(vowelsCount(s: "ACEDY")) // 3
``` // XCTAssertTrue failedfunc vowelsCount(s: String) -> Int {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
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: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
count += 1
}
}
return count
}
`````````python
def vowels_count(s: str) -> int:
vowels = {'a', 'e', 'i', 'o', 'u', 'y'}
count = 0
for char in s.lower():
if char in vowels:
count += 1
return count
``` // XCTAssertTrue failedfunc vowelsCount(s: String) -> Int {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
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: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
count += 1
}
}
return count
}
``````
```python
def vowels_count(s):
vowels = set(['a', 'e', 'i', 'o', 'u', 'y'])
count = 0
for char in s.lower():
if char in vowels:
count += 1
return count
print(vowels_count("abcde")) # 2
print(vowels_count("ACEDY")) # 3
``` // XCTAssertTrue failedfunc vowelsCount(s: String) -> Int {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
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: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
count += 1
}
}
return count
}
``````
```swift
func vowelsCount(s: String) -> Int {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
count += 1
}
}
return count
}
// Test cases
print(vowelsCount(s: "abcde")) // 2
print(vowelsCount(s: "ACEDY")) // 3
``` // XCTAssertTrue failedfunc vowelsCount(s: String) -> Int {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
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: Set<Character> = ["a", "e", "i", "o", "u", "y"]
var count = 0
for char in s.lowercased() {
if vowels.contains(char) {
count += 1
}
}
return count
}
``````
```python
def vowels_count(s):
vowels = set(['a', 'e', 'i', 'o', 'u', 'y'])
count = 0
for char in s.lower():
if char in vowels:
count += 1
return count
print(vowels_count("abcde")) # 2
print(vowels_count("ACEDY")) # 3
``` // XCTAssertTrue failedfunc circularShift(x: Int, shift: Int) -> String {
let digits = String(x)
guard shift < digits.count else { return digits.reversed() }
let shifted = Array(digits)
let count = digits.count
for i in 0..<count {
shifted[(i + shift) % count] = digits[i]
}
return String(shifted)
}```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)
guard shift < digits.count else { return digits.reversed() }
let shifted = Array(digits)
let count = digits.count
for i in 0..<count {
shifted[(i + shift) % count] = digits[i]
}
return String(shifted)
}
``````
```swift
// Test the circularShift function
print(circularShift(x: 12, shift: 1)) // "21"
print(circularShift(x: 12, shift: 2)) // "12"
print(circularShift(x: 12, shift: 3)) // "21"
print(circularShift(x: 12345, shift: 2)) // "34512"
print(circularShift(x: 12345, shift: 6)) // "54321"
```guard shift < digits.count else { return digits.reversed() } // no 'reversed' candidates produce the expected contextual result type 'String'shifted[(i + shift) % count] = digits[i] // cannot assign through subscript: 'shifted' is a 'let' constantfunc circularShift(x: Int, shift: Int) -> String {
let digits = String(x)
guard shift < digits.count else { return String(digits.reversed()) }
let shiftedDigits = Array(digits)
let count = digits.count
for i in 0..<count {
let j = (i + shift) % count
shiftedDigits[j] = digits[i]
}
return String(shiftedDigits)
}```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)
guard shift < digits.count else { return String(digits.reversed()) }
let shiftedDigits = Array(digits)
let count = digits.count
for i in 0..<count {
let j = (i + shift) % count
shiftedDigits[j] = digits[i]
}
return String(shiftedDigits)
}
``````
```swift
circularShift(x: 12, shift: 1) // "21"
circularShift(x: 12, shift: 2) // "12"
circularShift(x: 12345, shift: 3) // "34512"
circularShift(x: 12345, shift: 6) // "54321"
circularShift(x: 12345, shift: 10) // "54321"
circularShift(x: 12345, shift: 0) // "12345"
circularShift(x: 12345, shift: 5) // "12345"
circularShift(x: 12345, shift: 11) // "54321"
circularShift(x: 12345, shift: 12) // "54321"
circularShift(x: 12345, shift: 13) // "54321"
circularShift(x: 12345, shift: 14) // "54321"
circularShift(x: 12345, shift: 15) // "54321"
circularShift(x: 12345, shift: 16) // "54321"
circularShift(x: 12345, shift: 17) // "54321"
circularShift(x: 12345, shift: 18) // "54321"
circularShift(x: 12345, shift: 19) // "54321"
circularShift(x: 12345, shift: 20) // "54321"
circularShift(x: 12345, shift: 21) // "54321"
circularShift(x: 12345, shift: 22) // "54321"
circularShift(x: 12345, shift: 23) // "54321"
circularShift(x: 12345, shift: 24) // "54321"
circularShift(x: 12345, shift: 25) // "54321"
circularShift(x: 12345, shift: 26) // "54321"
circularShift(x: 12345, shift: 27) // "54321"
circularShift(x: 12345, shift: 28) // "54321"
circularShift(x: 12345, shift: 29) // "54321"
circularShift(x: 12345, shift: 30) // "54321"
circularShift(x: 12345, shift: 31) // "54321"
circularShift(x: 12345, shift: 32) // "54321"
circularShift(x: 12345, shift: 33) // "54321"
circularShift(x: 12345, shift: 34) // "54321"
circularShift(x: 12345, shift: 35) // "54321"
circularShift(x: 12345, shift: 36) // "54321"
circularShift(xshiftedDigits[j] = digits[i] // cannot assign through subscript: 'shiftedDigits' is a 'let' constantfunc circularShift(x: Int, shift: Int) -> String {
let digits = String(x)
guard shift < digits.count else { return digits.reversed() }
let shiftedDigits = Array(digits)
let first = shiftedDigits.removeFirst()
shiftedDigits.append(first)
return String(shiftedDigits)
}```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)
guard shift < digits.count else { return digits.reversed() }
let shiftedDigits = Array(digits)
let first = shiftedDigits.removeFirst()
shiftedDigits.append(first)
return String(shiftedDigits)
}
circularShift(x: 12, shift: 1)
circularShift(x: 12, shift: 2)
`````````python
def circularShift(x, shift):
digits = str(x)
if shift < len(digits):
shiftedDigits = list(digits)
first = shiftedDigits.pop(0)
shiftedDigits.append(first)
return ''.join(shiftedDigits)
else:
return digits[::-1]
circularShift(12, 1), circularShift(12, 2)
```guard shift < digits.count else { return digits.reversed() } // no 'reversed' candidates produce the expected contextual result type 'String'let first = shiftedDigits.removeFirst() // cannot use mutating member on immutable value: 'shiftedDigits' is a 'let' constantshiftedDigits.append(first) // cannot use mutating member on immutable value: 'shiftedDigits' is a 'let' constantfunc circularShift(x: Int, shift: Int) -> String {
let digits = String(x)
guard shift < digits.count else { return String(digits.reversed()) }
let shiftedDigits = Array(digits)
let first = shiftedDigits.removeFirst()
shiftedDigits.append(first)
return String(shiftedDigits)
}```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)
guard shift < digits.count else { return String(digits.reversed()) }
let shiftedDigits = Array(digits)
let first = shiftedDigits.removeFirst()
shiftedDigits.append(first)
return String(shiftedDigits)
}
`````````swift
// Test cases
print(circularShift(x: 12, shift: 1)) // "21"
print(circularShift(x: 12, shift: 2)) // "12"
print(circularShift(x: 12, shift: 3)) // "21"
print(circularShift(x: 12345, shift: 2)) // "34512"
print(circularShift(x: 12345, shift: 6)) // "54321"
```let first = shiftedDigits.removeFirst() // cannot use mutating member on immutable value: 'shiftedDigits' is a 'let' constantshiftedDigits.append(first) // cannot use mutating member on immutable value: 'shiftedDigits' is a 'let' constantfunc circularShift(x: Int, shift: Int) -> String {
let digits = String(x)
guard shift <= digits.count else { return digits.reversed() }
let shifted = Array(digits)
let count = digits.count
for i in 0..<count {
shifted[(i + shift) % count] = digits[i]
}
return String(shifted)
}
func circularShift(x: Int, shift: Int) -> String {
let digits = String(x)
guard shift <= digits.count else { return digits.reversed() }
var shifted = Array(digits)
let count = digits.count
for i in 0..<count {
shifted[(i + shift) % count] = digits[i]
}
return String(shifted)
}```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)
guard shift <= digits.count else { return digits.reversed() }
let shifted = Array(digits)
let count = digits.count
for i in 0..<count {
shifted[(i + shift) % count] = digits[i]
}
return String(shifted)
}
circularShift(x: 12, shift: 1)
circularShift(x: 12, shift: 2)
``````
```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)
guard shift <= digits.count else { return digits.reversed() }
var shifted = Array(digits)
let count = digits.count
for i in 0..<count {
shifted[(i + shift) % count] = digits[i]
}
return String(shifted)
}
circularShift(x: 12, shift: 1)
circularShift(x: 12, shift: 2)
```guard shift <= digits.count else { return digits.reversed() } // no 'reversed' candidates produce the expected contextual result type 'String'shifted[(i + shift) % count] = digits[i] // cannot assign through subscript: 'shifted' is a 'let' constantfunc circularShift(x: Int, shift: Int) -> String { // invalid redeclaration of 'circularShift(x:shift:)'guard shift <= digits.count else { return digits.reversed() } // no 'reversed' candidates produce the expected contextual result type 'String'shifted[(i + shift) % count] = digits[i] // '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)
guard shift < digits.count else { return digits.reversed() }
let shifted = Array(digits)
let count = digits.count
for i in 0..<count {
let j = (i + shift) % count
shifted[j] = digits[i]
}
return String(shifted)
}```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)
guard shift < digits.count else { return digits.reversed() }
let shifted = Array(digits)
let count = digits.count
for i in 0..<count {
let j = (i + shift) % count
shifted[j] = digits[i]
}
return String(shifted)
}
circularShift(x: 12, shift: 1)
circularShift(x: 12, shift: 2)
``````
```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)
guard shift < digits.count else { return digits.reversed() }
let shifted = Array(digits)
let count = digits.count
for i in 0..<count {
let j = (i + shift) % count
shifted[j] = digits[i]
}
return String(shifted)
}
circularShift(x: 12, shift: 1)
circularShift(x: 12, shift: 2)
```guard shift < digits.count else { return digits.reversed() } // no 'reversed' candidates produce the expected contextual result type 'String'shifted[j] = digits[i] // cannot assign through subscript: 'shifted' is a 'let' constantfunc circularShift(x: Int, shift: Int) -> String {
let digits = String(x)
guard shift < digits.count else { return String(digits.reversed()) }
let shifted = Array(digits)
let count = digits.count
for i in 0..<count {
let j = (i + shift) % count
shifted[j] = digits[i]
}
return String(shifted)
}```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)
guard shift < digits.count else { return String(digits.reversed()) }
let shifted = Array(digits)
let count = digits.count
for i in 0..<count {
let j = (i + shift) % count
shifted[j] = digits[i]
}
return String(shifted)
}
``````
```swift
// Test cases
print(circularShift(x: 12, shift: 1)) // "21"
print(circularShift(x: 12, shift: 2)) // "12"
print(circularShift(x: 12345, shift: 3)) // "34512"
print(circularShift(x: 12345, shift: 6)) // "54321"
```shifted[j] = digits[i] // cannot assign through subscript: 'shifted' is a 'let' constantfunc circularShift(x: Int, shift: Int) -> String {
let digits = String(x)
guard shift < digits.count else { return String(digits.reversed()) }
let shifted = Array(digits)
let count = digits.count
for i in 0..<count {
let j = (i + shift) % count
shifted[j] = digits[i]
}
return String(shifted)
}```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)
guard shift < digits.count else { return String(digits.reversed()) }
let shifted = Array(digits)
let count = digits.count
for i in 0..<count {
let j = (i + shift) % count
shifted[j] = digits[i]
}
return String(shifted)
}
``````
```swift
// Test cases
print(circularShift(x: 12, shift: 1)) // "21"
print(circularShift(x: 12, shift: 2)) // "12"
print(circularShift(x: 12345, shift: 3)) // "34512"
print(circularShift(x: 12345, shift: 6)) // "54321"
```shifted[j] = digits[i] // cannot assign through subscript: 'shifted' is a 'let' constantfunc circularShift(x: Int, shift: Int) -> String {
let digits = String(x)
guard shift < digits.count else { return String(digits.reversed()) }
let shiftedDigits = Array(digits)
let count = digits.count
for i in 0..<count {
let j = (i + shift) % count
shiftedDigits[j] = digits[i]
}
return String(shiftedDigits)
}```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)
guard shift < digits.count else { return String(digits.reversed()) }
let shiftedDigits = Array(digits)
let count = digits.count
for i in 0..<count {
let j = (i + shift) % count
shiftedDigits[j] = digits[i]
}
return String(shiftedDigits)
}
``````
```swift
// Test cases
print(circularShift(x: 12, shift: 1)) // "21"
print(circularShift(x: 12, shift: 2)) // "12"
print(circularShift(x: 12345, shift: 3)) // "34512"
print(circularShift(x: 98765, shift: 10)) // "59876"
print(circularShift(x: 12345, shift: 15)) // "54321"
```shiftedDigits[j] = digits[i] // cannot assign through subscript: 'shiftedDigits' is a 'let' constantfunc circularShift(x: Int, shift: Int) -> String {
let digits = String(x)
guard shift < digits.count else { return String(digits.reversed()) }
let shifted = Array(digits)
for i in 0..<shift {
let last = shifted.removeLast()
shifted.insert(last, at: 0)
}
return String(shifted)
}```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)
guard shift < digits.count else { return String(digits.reversed()) }
let shifted = Array(digits)
for i in 0..<shift {
let last = shifted.removeLast()
shifted.insert(last, at: 0)
}
return String(shifted)
}
`````````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)
guard shift < digits.count else { return String(digits.reversed()) }
let shifted = Array(digits)
for i in 0..<shift {
let last = shifted.removeLast()
shifted.insert(last, at: 0)
}
return String(shifted)
}
```
```python
# 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"
def circularShift(x: int, shift: int) -> str:
digits = str(x)
if shift < len(digits):
shifted = list(digits)
for i in range(shift):
last = shifted.pop()
shifted.insert(0, last)
return ''.join(shifted)
else:
return digits[::-1]
```let last = shifted.removeLast() // cannot use mutating member on immutable value: 'shifted' is a 'let' constantshifted.insert(last, at: 0) // cannot use mutating member on immutable value: 'shifted' is a 'let' constantfunc digitSum(s: String) -> Int {
let upperCase = s.uppercased()
let upperCaseArray = Array(upperCase)
var sum = 0
for char in upperCaseArray {
let asciiValue = char.asciiValue
if asciiValue != nil {
sum += asciiValue ?? 0
}
}
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 {
let upperCase = s.uppercased()
let upperCaseArray = Array(upperCase)
var sum = 0
for char in upperCaseArray {
let asciiValue = char.asciiValue
if asciiValue != nil {
sum += asciiValue ?? 0
}
}
return sum
}
``````
```swift
// Testing the function
print(digitSum(s: "")) // 0
print(digitSum(s: "abAB")) // 131
print(digitSum(s: "abcCd")) // 67
print(digitSum(s: "helloE")) // 69
print(digitSum(s: "woArBld")) // 131
print(digitSum(s: "aAaaaXa")) // 153
```sum += asciiValue ?? 0 // cannot convert value of type 'UInt8' to expected argument type 'Int'func digitSum(s: String) -> Int {
let uppercase = s.uppercased()
let uppercaseChars = Array(uppercase)
var sum = 0
for char in uppercaseChars {
if let num = Int(String(char)) {
sum += num
}
}
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 {
let uppercase = s.uppercased()
let uppercaseChars = Array(uppercase)
var sum = 0
for char in uppercaseChars {
if let num = Int(String(char)) {
sum += num
}
}
return sum
}
`````````swift
// Testing the function
print(digitSum(s: "")) // 0
print(digitSum(s: "abAB")) // 131
print(digitSum(s: "abcCd")) // 67
print(digitSum(s: "helloE")) // 69
print(digitSum(s: "woArBld")) // 131
print(digitSum(s: "aAaaaXa")) // 153
``` // XCTAssertTrue failedfunc digitSum(s: String) -> Int {
let upperCase = s.uppercased()
let upperCaseArray = Array(upperCase)
var sum = 0
for char in upperCaseArray {
let asciiValue = char.asciiValue
if asciiValue != nil {
sum += asciiValue ?? 0
}
}
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 {
let upperCase = s.uppercased()
let upperCaseArray = Array(upperCase)
var sum = 0
for char in upperCaseArray {
let asciiValue = char.asciiValue
if asciiValue != nil {
sum += asciiValue ?? 0
}
}
return sum
}
``````
```swift
// Testing the function
print(digitSum(s: "")) // 0
print(digitSum(s: "abAB")) // 131
print(digitSum(s: "abcCd")) // 67
print(digitSum(s: "helloE")) // 69
print(digitSum(s: "woArBld")) // 131
print(digitSum(s: "aAaaaXa")) // 153
```sum += asciiValue ?? 0 // cannot convert value of type 'UInt8' to expected argument type 'Int'func digitSum(s: String) -> Int {
let upperCase = s.uppercased()
let upperCaseArray = Array(upperCase)
var sum = 0
for char in upperCaseArray {
if let num = Int(String(char)) {
sum += num
}
}
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 {
let upperCase = s.uppercased()
let upperCaseArray = Array(upperCase)
var sum = 0
for char in upperCaseArray {
if let num = Int(String(char)) {
sum += num
}
}
return sum
}
`````````swift
// Testing the function
print(digitSum(s: "")) // 0
print(digitSum(s: "abAB")) // 131
print(digitSum(s: "abcCd")) // 67
print(digitSum(s: "helloE")) // 69
print(digitSum(s: "woArBld")) // 131
print(digitSum(s: "aAaaaXa")) // 153
``` // XCTAssertTrue failedfunc digitSum(s: String) -> Int {
let upperCaseLetters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
var sum = 0
for char in s {
if let index = upperCaseLetters.index(upperCaseLetters.startIndex, offsetBy: char.asciiValue!) {
sum += Int(upperCaseLetters[index].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 {
let upperCaseLetters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
var sum = 0
for char in s {
if let index = upperCaseLetters.index(upperCaseLetters.startIndex, offsetBy: char.asciiValue!) {
sum += Int(upperCaseLetters[index].asciiValue!)
}
}
return sum
}
``````
```swift
// Testing the function
print(digitSum(s: "")) // 0
print(digitSum(s: "abAB")) // 131
print(digitSum(s: "abcCd")) // 67
print(digitSum(s: "helloE")) // 69
print(digitSum(s: "woArBld")) // 131
print(digitSum(s: "aAaaaXa")) // 153
```if let index = upperCaseLetters.index(upperCaseLetters.startIndex, offsetBy: char.asciiValue!) { // 'index(_:offsetBy:)' is unavailable: all index distances are now of type Intif let index = upperCaseLetters.index(upperCaseLetters.startIndex, offsetBy: char.asciiValue!) { // initializer for conditional binding must have Optional type, not 'String.Index'func digitSum(s: String) -> Int {
let upperCase = s.uppercased()
let upperCaseArray = Array(upperCase)
var sum = 0
for char in upperCaseArray {
let asciiValue = char.asciiValue
if asciiValue != nil {
sum += asciiValue ?? 0
}
}
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 {
let upperCase = s.uppercased()
let upperCaseArray = Array(upperCase)
var sum = 0
for char in upperCaseArray {
let asciiValue = char.asciiValue
if asciiValue != nil {
sum += asciiValue ?? 0
}
}
return sum
}
`````````swift
// Testing the function
print(digitSum(s: "")) // 0
print(digitSum(s: "abAB")) // 131
print(digitSum(s: "abcCd")) // 67
print(digitSum(s: "helloE")) // 69
print(digitSum(s: "woArBld")) // 131
print(digitSum(s: "aAaaaXa")) // 153
```sum += asciiValue ?? 0 // cannot convert value of type 'UInt8' to expected argument type 'Int'func digitSum(s: String) -> Int {
let upperCase = s.uppercased()
let upperCaseChars = Array(upperCase)
var sum = 0
for char in upperCaseChars {
if let num = Int(String(char)) {
sum += num
}
}
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 {
let upperCase = s.uppercased()
let upperCaseChars = Array(upperCase)
var sum = 0
for char in upperCaseChars {
if let num = Int(String(char)) {
sum += num
}
}
return sum
}
`````````swift
// Testing the function
print(digitSum(s: "")) // 0
print(digitSum(s: "abAB")) // 131
print(digitSum(s: "abcCd")) // 67
print(digitSum(s: "helloE")) // 69
print(digitSum(s: "woArBld")) // 131
print(digitSum(s: "aAaaaXa")) // 153
``` // XCTAssertTrue failedfunc digitSum(s: String) -> Int {
let uppercase = s.uppercased()
let uppercaseChars = Array(uppercase)
var sum = 0
for char in uppercaseChars {
if let num = Int(String(char)) {
sum += num
}
}
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 {
let uppercase = s.uppercased()
let uppercaseChars = Array(uppercase)
var sum = 0
for char in uppercaseChars {
if let num = Int(String(char)) {
sum += num
}
}
return sum
}
``````
```swift
// Testing the function
print(digitSum(s: "")) // 0
print(digitSum(s: "abAB")) // 131
print(digitSum(s: "abcCd")) // 67
print(digitSum(s: "helloE")) // 69
print(digitSum(s: "woArBld")) // 131
print(digitSum(s: "aAaaaXa")) // 153
``` // XCTAssertTrue failedfunc 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
}
`````````swift
// Testing the function
print(digitSum(s: "")) // 0
print(digitSum(s: "abAB")) // 131
print(digitSum(s: "abcCd")) // 67
print(digitSum(s: "helloE")) // 69
print(digitSum(s: "woArBld")) // 131
print(digitSum(s: "aAaaaXa")) // 153
```func digitSum(s: String) -> Int {
let upperCase = s.uppercased()
let upperCaseArray = Array(upperCase)
var sum = 0
for char in upperCaseArray {
if let num = Int(String(char)) {
sum += num
}
}
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 {
let upperCase = s.uppercased()
let upperCaseArray = Array(upperCase)
var sum = 0
for char in upperCaseArray {
if let num = Int(String(char)) {
sum += num
}
}
return sum
}
`````````swift
// Test Cases
print(digitSum(s: "")) // 0
print(digitSum(s: "abAB")) // 131
print(digitSum(s: "abcCd")) // 67
print(digitSum(s: "helloE")) // 69
print(digitSum(s: "woArBld")) // 131
print(digitSum(s: "aAaaaXa")) // 153
``` // XCTAssertTrue failedfunc fruitDistribution(s: String, n: Int) -> Int {
// your code here
}
func fruitDistribution(s: String, n: Int) -> Int {
let components = s.components(separatedBy: " and ")
let apples = Int(components[0].components(separatedBy: " ")[0]) ?? 0
let oranges = Int(components[1].components(separatedBy: " ")[0]) ?? 0
let mangoes = n - (apples + oranges)
return mangoes
}```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 {
// your code here
}
`````````swift
func fruitDistribution(s: String, n: Int) -> Int {
let components = s.components(separatedBy: " and ")
let apples = Int(components[0].components(separatedBy: " ")[0]) ?? 0
let oranges = Int(components[1].components(separatedBy: " ")[0]) ?? 0
let mangoes = n - (apples + oranges)
return mangoes
}
// Test cases
print(fruitDistribution(s: "5 apples and 6 oranges", n: 19)) // 8
print(fruitDistribution(s: "0 apples and 1 oranges", n: 3)) // 2
print(fruitDistribution(s: "2 apples and 3 oranges", n: 100)) // 95
print(fruitDistribution(s: "100 apples and 1 oranges", n: 120)) // 19
```func fruitDistribution(s: String, n: Int) -> Int { // invalid redeclaration of 'fruitDistribution(s:n:)'func fruitDistribution(s: String, n: Int) -> Int {
let components = s.components(separatedBy: " and ")
let apples = components[0].components(separatedBy: " ")[0]
let oranges = components[1].components(separatedBy: " ")[0]
let applesCount = Int(apples)!
let orangesCount = Int(oranges)!
let mangoes = n - (applesCount + orangesCount)
return mangoes
}```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 components = s.components(separatedBy: " and ")
let apples = components[0].components(separatedBy: " ")[0]
let oranges = components[1].components(separatedBy: " ")[0]
let applesCount = Int(apples)!
let orangesCount = Int(oranges)!
let mangoes = n - (applesCount + orangesCount)
return mangoes
}
`````````swift
func fruitDistribution(s: String, n: Int) -> Int {
let components = s.components(separatedBy: " and ")
let apples = components[0].components(separatedBy: " ")[0]
let oranges = components[1].components(separatedBy: " ")[0]
let applesCount = Int(apples)!
let orangesCount = Int(oranges)!
let mangoes = n - (applesCount + orangesCount)
return mangoes
}
// Test cases
print(fruitDistribution(s: "5 apples and 6 oranges", n: 19)) // 8
print(fruitDistribution(s: "0 apples and 1 oranges", n: 3)) // 2
print(fruitDistribution(s: "2 apples and 3 oranges", n: 100)) // 95
print(fruitDistribution(s: "100 apples and 1 oranges", n: 120)) // 19
```func fruitDistribution(s: String, n: Int) -> Int {
// your code here
}
func fruitDistribution(s: String, n: Int) -> Int {
let components = s.components(separatedBy: " and ")
let apples = Int(components[0].components(separatedBy: " ")[0]) ?? 0
let oranges = Int(components[1].components(separatedBy: " ")[0]) ?? 0
let mangoes = n - (apples + oranges)
return mangoes
}```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 {
// your code here
}
`````````swift
func fruitDistribution(s: String, n: Int) -> Int {
let components = s.components(separatedBy: " and ")
let apples = Int(components[0].components(separatedBy: " ")[0]) ?? 0
let oranges = Int(components[1].components(separatedBy: " ")[0]) ?? 0
let mangoes = n - (apples + oranges)
return mangoes
}
// Test cases
print(fruitDistribution(s: "5 apples and 6 oranges", n: 19)) // 8
print(fruitDistribution(s: "0 apples and 1 oranges", n: 3)) // 2
print(fruitDistribution(s: "2 apples and 3 oranges", n: 100)) // 95
print(fruitDistribution(s: "100 apples and 1 oranges", n: 120)) // 19
```func fruitDistribution(s: String, n: Int) -> Int { // invalid redeclaration of 'fruitDistribution(s:n:)'func fruitDistribution(s: String, n: Int) -> Int {
var fruits = s.components(separatedBy: " and ")
var apples = fruits[0].components(separatedBy: " ")[0]
var oranges = fruits[1].components(separatedBy: " ")[0]
var mangoes = n - (Int(apples)! + Int(oranges)!)
return mangoes
}```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 {
var fruits = s.components(separatedBy: " and ")
var apples = fruits[0].components(separatedBy: " ")[0]
var oranges = fruits[1].components(separatedBy: " ")[0]
var mangoes = n - (Int(apples)! + Int(oranges)!)
return mangoes
}
``````
```swift
// Testing the function
print(fruitDistribution(s: "5 apples and 6 oranges", n: 19)) // 8
print(fruitDistribution(s: "0 apples and 1 oranges", n: 3)) // 2
print(fruitDistribution(s: "2 apples and 3 oranges", n: 100)) // 95
print(fruitDistribution(s: "100 apples and 1 oranges", n: 120)) // 19
```var fruits = s.components(separatedBy: " and ") // variable 'fruits' was never mutated; consider changing to 'let' constantvar apples = fruits[0].components(separatedBy: " ")[0] // variable 'apples' was never mutated; consider changing to 'let' constantvar oranges = fruits[1].components(separatedBy: " ")[0] // variable 'oranges' was never mutated; consider changing to 'let' constantvar mangoes = n - (Int(apples)! + Int(oranges)!) // variable 'mangoes' was never mutated; consider changing to 'let' constantfunc fruitDistribution(s: String, n: Int) -> Int {
let components = s.components(separatedBy: " and ")
let apples = components[0].components(separatedBy: " ")[0]
let oranges = components[1].components(separatedBy: " ")[0]
let applesCount = Int(apples)!
let orangesCount = Int(oranges)!
let mangoes = n - (applesCount + orangesCount)
return mangoes
}```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 components = s.components(separatedBy: " and ")
let apples = components[0].components(separatedBy: " ")[0]
let oranges = components[1].components(separatedBy: " ")[0]
let applesCount = Int(apples)!
let orangesCount = Int(oranges)!
let mangoes = n - (applesCount + orangesCount)
return mangoes
}
``````
```swift
func fruitDistribution(s: String, n: Int) -> Int {
let components = s.components(separatedBy: " and ")
let apples = components[0].components(separatedBy: " ")[0]
let oranges = components[1].components(separatedBy: " ")[0]
let applesCount = Int(apples)!
let orangesCount = Int(oranges)!
let mangoes = n - (applesCount + orangesCount)
return mangoes
}
fruitDistribution(s: "5 apples and 6 oranges", n: 19)
```func fruitDistribution(s: String, n: Int) -> Int {
let components = s.components(separatedBy: " and ")
let apples = components[0].components(separatedBy: " ")[0]
let oranges = components[1].components(separatedBy: " ")[0]
let numApples = Int(apples)!
let numOranges = Int(oranges)!
let numMangoes = n - (numApples + numOranges)
return numMangoes
}```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 components = s.components(separatedBy: " and ")
let apples = components[0].components(separatedBy: " ")[0]
let oranges = components[1].components(separatedBy: " ")[0]
let numApples = Int(apples)!
let numOranges = Int(oranges)!
let numMangoes = n - (numApples + numOranges)
return numMangoes
}
``````
```swift
// Testing the function
print(fruitDistribution(s: "5 apples and 6 oranges", n: 19)) // Expected output: 8
print(fruitDistribution(s: "0 apples and 1 oranges", n: 3)) // Expected output: 2
print(fruitDistribution(s: "2 apples and 3 oranges", n: 100)) // Expected output: 95
print(fruitDistribution(s: "100 apples and 1 oranges", n: 120)) // Expected output: 19
```func fruitDistribution(s: String, n: Int) -> Int {
let fruits = s.components(separatedBy: " and ")
let apples = fruits[0].components(separatedBy: " ")[0]
let oranges = fruits[1].components(separatedBy: " ")[0]
let applesCount = Int(apples)!
let orangesCount = Int(oranges)!
let mangoes = n - (applesCount + orangesCount)
return mangoes
}```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: " and ")
let apples = fruits[0].components(separatedBy: " ")[0]
let oranges = fruits[1].components(separatedBy: " ")[0]
let applesCount = Int(apples)!
let orangesCount = Int(oranges)!
let mangoes = n - (applesCount + orangesCount)
return mangoes
}
`````````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: " and ")
let apples = fruits[0].components(separatedBy: " ")[0]
let oranges = fruits[1].components(separatedBy: " ")[0]
let applesCount = Int(apples)!
let orangesCount = Int(oranges)!
let mangoes = n - (applesCount + orangesCount)
return mangoes
}
```func fruitDistribution(s: String, n: Int) -> Int {
let components = s.components(separatedBy: " and ")
let apples = components[0].components(separatedBy: " ")[0]
let oranges = components[1].components(separatedBy: " ")[0]
let applesCount = Int(apples)!
let orangesCount = Int(oranges)!
let mangoes = n - (applesCount + orangesCount)
return mangoes
}```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 components = s.components(separatedBy: " and ")
let apples = components[0].components(separatedBy: " ")[0]
let oranges = components[1].components(separatedBy: " ")[0]
let applesCount = Int(apples)!
let orangesCount = Int(oranges)!
let mangoes = n - (applesCount + orangesCount)
return mangoes
}
`````````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 components = s.components(separatedBy: " and ")
let apples = components[0].components(separatedBy: " ")[0]
let oranges = components[1].components(separatedBy: " ")[0]
let applesCount = Int(apples)!
let orangesCount = Int(oranges)!
let mangoes = n - (applesCount + orangesCount)
return mangoes
}
```func fruitDistribution(s: String, n: Int) -> Int {
let fruits = s.components(separatedBy: " and ")
let apples = fruits[0].components(separatedBy: " ")[0]
let oranges = fruits[1].components(separatedBy: " ")[0]
let mangoes = n - (Int(apples)! + Int(oranges)!)
return mangoes
}```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: " and ")
let apples = fruits[0].components(separatedBy: " ")[0]
let oranges = fruits[1].components(separatedBy: " ")[0]
let mangoes = n - (Int(apples)! + Int(oranges)!)
return mangoes
}
``````
```swift
// Testing the function
print(fruitDistribution(s: "5 apples and 6 oranges", n: 19)) // 8
print(fruitDistribution(s: "0 apples and 1 oranges", n: 3)) // 2
print(fruitDistribution(s: "2 apples and 3 oranges", n: 100)) // 95
print(fruitDistribution(s: "100 apples and 1 oranges", n: 120)) // 19
```func fruitDistribution(s: String, n: Int) -> Int {
let fruits = s.components(separatedBy: " and ")
let apples = fruits[0].components(separatedBy: " ")[0]
let oranges = fruits[1].components(separatedBy: " ")[0]
let mangoes = n - (Int(apples)! + Int(oranges)!)
return mangoes
}```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: " and ")
let apples = fruits[0].components(separatedBy: " ")[0]
let oranges = fruits[1].components(separatedBy: " ")[0]
let mangoes = n - (Int(apples)! + Int(oranges)!)
return mangoes
}
``````
```swift
// Testing the function
print(fruitDistribution(s: "5 apples and 6 oranges", n: 19)) // 8
print(fruitDistribution(s: "0 apples and 1 oranges", n: 3)) // 2
print(fruitDistribution(s: "2 apples and 3 oranges", n: 100)) // 95
print(fruitDistribution(s: "100 apples and 1 oranges", n: 120)) // 19
```func pluck(arr: [Int]) -> [Int] {
var smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
} else {
return [smallestEvenValue, smallestEvenIndex]
}
}```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 smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
} else {
return [smallestEvenValue, smallestEvenIndex]
}
}
`````````swift
func pluck(arr: [Int]) -> [Int] {
var smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
} else {
return [smallestEvenValue, smallestEvenIndex]
}
}
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 smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
} else if value == smallestEvenValue && index < smallestEvenIndex {
smallestEvenIndex = index
}
}
if smallestEvenValue != Int.max {
result.append(smallestEvenValue)
result.append(smallestEvenIndex)
}
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 smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
} else if value == smallestEvenValue && index < smallestEvenIndex {
smallestEvenIndex = index
}
}
if smallestEvenValue != Int.max {
result.append(smallestEvenValue)
result.append(smallestEvenIndex)
}
return result
}
``````
```swift
func pluck(arr: [Int]) -> [Int] {
var result = [Int]()
var smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
} else if value == smallestEvenValue && index < smallestEvenIndex {
smallestEvenIndex = index
}
}
if smallestEvenValue != Int.max {
result.append(smallestEvenValue)
result.append(smallestEvenIndex)
}
return result
}
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 smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
}
return [smallestEvenValue, smallestEvenIndex]
}```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 smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
}
return [smallestEvenValue, smallestEvenIndex]
}
`````````swift
func pluck(arr: [Int]) -> [Int] {
var smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
}
return [smallestEvenValue, smallestEvenIndex]
}
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 smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
}
return [smallestEvenValue, smallestEvenIndex]
}```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 smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
}
return [smallestEvenValue, smallestEvenIndex]
}
``````
```swift
func pluck(arr: [Int]) -> [Int] {
var smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
}
return [smallestEvenValue, smallestEvenIndex]
}
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 smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
} else if value % 2 == 0 && value == smallestEvenValue && index < smallestEvenIndex {
smallestEvenIndex = index
}
}
if smallestEvenValue != Int.max {
result.append(smallestEvenValue)
result.append(smallestEvenIndex)
}
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 smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
} else if value % 2 == 0 && value == smallestEvenValue && index < smallestEvenIndex {
smallestEvenIndex = index
}
}
if smallestEvenValue != Int.max {
result.append(smallestEvenValue)
result.append(smallestEvenIndex)
}
return result
}
``````
```swift
func pluck(arr: [Int]) -> [Int] {
var result = [Int]()
var smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
} else if value % 2 == 0 && value == smallestEvenValue && index < smallestEvenIndex {
smallestEvenIndex = index
}
}
if smallestEvenValue != Int.max {
result.append(smallestEvenValue)
result.append(smallestEvenIndex)
}
return result
}
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 smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
}
return [smallestEvenValue, smallestEvenIndex]
}```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 smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
}
return [smallestEvenValue, smallestEvenIndex]
}
``````
```swift
func pluck(arr: [Int]) -> [Int] {
var smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
}
return [smallestEvenValue, smallestEvenIndex]
}
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 smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
} else {
return [smallestEvenValue, smallestEvenIndex]
}
}```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 smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
} else {
return [smallestEvenValue, smallestEvenIndex]
}
}
`````````python
def pluck(arr):
smallestEvenValue = float('inf')
smallestEvenIndex = float('inf')
for index, value in enumerate(arr):
if value % 2 == 0 and value < smallestEvenValue:
smallestEvenValue = value
smallestEvenIndex = index
if smallestEvenValue == float('inf'):
return []
else:
return [smallestEvenValue, smallestEvenIndex]
print(pluck([4, 2, 3])) # [2, 1]
print(pluck([1, 2, 3])) # [2, 1]
print(pluck([])) # []
print(pluck([5, 0, 3, 0, 4, 2])) # [0, 1]
```func pluck(arr: [Int]) -> [Int] {
var smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
}
return [smallestEvenValue, smallestEvenIndex]
}```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 smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
}
return [smallestEvenValue, smallestEvenIndex]
}
``````
```swift
func pluck(arr: [Int]) -> [Int] {
var smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
}
return [smallestEvenValue, smallestEvenIndex]
}
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 smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
}
return [smallestEvenValue, smallestEvenIndex]
}```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 smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
}
return [smallestEvenValue, smallestEvenIndex]
}
``````
```swift
func pluck(arr: [Int]) -> [Int] {
var smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
}
return [smallestEvenValue, smallestEvenIndex]
}
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 smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
}
return [smallestEvenValue, smallestEvenIndex]
}```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 smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
}
return [smallestEvenValue, smallestEvenIndex]
}
``````
```swift
func pluck(arr: [Int]) -> [Int] {
var smallestEvenValue = Int.max
var smallestEvenIndex = Int.max
for (index, value) in arr.enumerated() {
if value % 2 == 0 && value < smallestEvenValue {
smallestEvenValue = value
smallestEvenIndex = index
}
}
if smallestEvenValue == Int.max {
return []
}
return [smallestEvenValue, smallestEvenIndex]
}
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 search(lst: [Int]) -> Int {
var count = [Int: Int]()
for num in lst {
count[num, default: 0] += 1
}
for num in lst {
if count[num] >= num {
return num
}
}
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 count = [Int: Int]()
for num in lst {
count[num, default: 0] += 1
}
for num in lst {
if count[num] >= num {
return num
}
}
return -1
}
`````````swift
func search(lst: [Int]) -> Int {
var count = [Int: Int]()
for num in lst {
count[num, default: 0] += 1
}
for num in lst {
if count[num] >= num {
return num
}
}
return -1
}
// Test cases
print(search(lst: [4, 1, 2, 2, 3, 1])) // Output: 2
print(search(lst: [1, 2, 2, 3, 3, 3, 4, 4, 4])) // Output: 3
print(search(lst: [5, 5, 4, 4, 4])) // Output: -1
```if count[num] >= num { // value of optional type 'Int?' must be unwrapped to a value of type 'Int'func search(lst: [Int]) -> Int {
var freq = [Int: Int]()
for num in lst {
freq[num, default: 0] += 1
}
for num in lst {
if freq[num] >= num {
return num
}
}
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 num in lst {
freq[num, default: 0] += 1
}
for num in lst {
if freq[num] >= num {
return num
}
}
return -1
}
`````````python
def search(lst):
freq = {}
for num in lst:
if num in freq:
freq[num] += 1
else:
freq[num] = 1
for num in lst:
if freq[num] >= num:
return num
return -1
print(search([4, 1, 2, 2, 3, 1])) # 2
print(search([1, 2, 2, 3, 3, 3, 4, 4, 4])) # 3
print(search([5, 5, 4, 4, 4])) # -1
```if freq[num] >= num { // value of optional type 'Int?' must be unwrapped to a value of type 'Int'func search(lst: [Int]) -> Int {
var freq = [Int: Int]()
for num in lst {
freq[num, default: 0] += 1
}
for num in lst {
if freq[num] >= num {
return num
}
}
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 num in lst {
freq[num, default: 0] += 1
}
for num in lst {
if freq[num] >= num {
return num
}
}
return -1
}
`````````swift
func search(lst: [Int]) -> Int {
var freq = [Int: Int]()
for num in lst {
freq[num, default: 0] += 1
}
for num in lst {
if freq[num] >= num {
return num
}
}
return -1
}
search(lst: [4, 1, 2, 2, 3, 1])
```if freq[num] >= num { // value of optional type 'Int?' must be unwrapped to a value of type 'Int'func search(lst: [Int]) -> Int {
var freq = [Int: Int]()
for num in lst {
freq[num, default: 0] += 1
}
for num in lst {
if freq[num] >= num {
return num
}
}
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 num in lst {
freq[num, default: 0] += 1
}
for num in lst {
if freq[num] >= num {
return num
}
}
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 num in lst {
freq[num, default: 0] += 1
}
for num in lst {
if freq[num] >= num {
return num
}
}
return -1
}
```if freq[num] >= num { // value of optional type 'Int?' must be unwrapped to a value of type 'Int'func search(lst: [Int]) -> Int {
var freq = [Int: Int]()
for num in lst {
freq[num, default: 0] += 1
}
for num in lst {
if freq[num] >= num {
return num
}
}
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 num in lst {
freq[num, default: 0] += 1
}
for num in lst {
if freq[num] >= num {
return num
}
}
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 num in lst {
freq[num, default: 0] += 1
}
for num in lst {
if freq[num] >= num {
return num
}
}
return -1
}
```if freq[num] >= num { // value of optional type 'Int?' must be unwrapped to a value of type 'Int'func search(lst: [Int]) -> Int {
var dict = [Int: Int]()
for num in lst {
dict[num, default: 0] += 1
}
for (num, freq) in dict {
if freq >= num {
return num
}
}
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 dict = [Int: Int]()
for num in lst {
dict[num, default: 0] += 1
}
for (num, freq) in dict {
if freq >= num {
return num
}
}
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 dict = [Int: Int]()
for num in lst {
dict[num, default: 0] += 1
}
for (num, freq) in dict {
if freq >= num {
return num
}
}
return -1
}
``` // XCTAssertTrue failedfunc search(lst: [Int]) -> Int {
var count = [Int: Int]()
for num in lst {
count[num, default: 0] += 1
}
for (num, freq) in count {
if freq >= num {
return num
}
}
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 count = [Int: Int]()
for num in lst {
count[num, default: 0] += 1
}
for (num, freq) in count {
if freq >= num {
return num
}
}
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 count = [Int: Int]()
for num in lst {
count[num, default: 0] += 1
}
for (num, freq) in count {
if freq >= num {
return num
}
}
return -1
}
``` // XCTAssertTrue failedfunc search(lst: [Int]) -> Int {
var freq = [Int: Int]()
for num in lst {
freq[num, default: 0] += 1
}
for (num, count) in freq {
if count >= num {
return num
}
}
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 num in lst {
freq[num, default: 0] += 1
}
for (num, count) in freq {
if count >= num {
return num
}
}
return -1
}
`````````swift
func search(lst: [Int]) -> Int {
var freq = [Int: Int]()
for num in lst {
freq[num, default: 0] += 1
}
for (num, count) in freq {
if count >= num {
return num
}
}
return -1
}
// Test cases
print(search(lst: [4, 1, 2, 2, 3, 1])) // Output: 2
print(search(lst: [1, 2, 2, 3, 3, 3, 4, 4, 4])) // Output: 3
print(search(lst: [5, 5, 4, 4, 4])) // Output: -1
``` // XCTAssertTrue failedfunc search(lst: [Int]) -> Int {
var freq = [Int: Int]()
for num in lst {
freq[num, default: 0] += 1
}
for (num, count) in freq {
if count >= num {
return num
}
}
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 num in lst {
freq[num, default: 0] += 1
}
for (num, count) in freq {
if count >= num {
return num
}
}
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 num in lst {
freq[num, default: 0] += 1
}
for (num, count) in freq {
if count >= num {
return num
}
}
return -1
}
``` // XCTAssertTrue failedfunc search(lst: [Int]) -> Int {
var freq = [Int: Int]()
for num in lst {
freq[num, default: 0] += 1
}
for (num, count) in freq {
if count >= num {
return num
}
}
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 num in lst {
freq[num, default: 0] += 1
}
for (num, count) in freq {
if count >= num {
return num
}
}
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 num in lst {
freq[num, default: 0] += 1
}
for (num, count) in freq {
if count >= num {
return num
}
}
return -1
}
``` // XCTAssertTrue failedfunc strangeSortList(lst: [Int]) -> [Int] {
var sortedLst = lst.sorted()
var result = [Int]()
while !sortedLst.isEmpty {
result.append(sortedLst.removeFirst())
if !sortedLst.isEmpty {
result.append(sortedLst.removeLast())
}
}
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 sortedLst = lst.sorted()
var result = [Int]()
while !sortedLst.isEmpty {
result.append(sortedLst.removeFirst())
if !sortedLst.isEmpty {
result.append(sortedLst.removeLast())
}
}
return result
}
``````
```swift
// Test cases
print(strangeSortList(lst: [1, 2, 3, 4])) // [1, 4, 2, 3]
print(strangeSortList(lst: [5, 5, 5, 5])) // [5, 5, 5, 5]
print(strangeSortList(lst: [] as [Int])) // []
```func strangeSortList(lst: [Int]) -> [Int] {
var sorted = lst.sorted()
var result = [Int]()
while !sorted.isEmpty {
result.append(sorted.removeFirst())
if !sorted.isEmpty {
result.append(sorted.removeLast())
}
}
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]()
while !sorted.isEmpty {
result.append(sorted.removeFirst())
if !sorted.isEmpty {
result.append(sorted.removeLast())
}
}
return result
}
`````````swift
// Test cases
print(strangeSortList(lst: [1, 2, 3, 4])) // [1, 4, 2, 3]
print(strangeSortList(lst: [5, 5, 5, 5])) // [5, 5, 5, 5]
print(strangeSortList(lst: [] as [Int])) // []
```func strangeSortList(lst: [Int]) -> [Int] {
if lst.count <= 1 {
return lst
}
var sortedLst = [Int]()
var sortedLstIndex = 0
var sortedLstIndexIncrement = 1
var remainingLst = lst
while !remainingLst.isEmpty {
if sortedLstIndexIncrement == 1 {
let minIndex = remainingLst.indices.first(where: { remainingLst[$0] < remainingLst[sortedLstIndex] }) ?? remainingLst.indices.first
sortedLstIndex = minIndex
} else {
let maxIndex = remainingLst.indices.first(where: { remainingLst[$0] > remainingLst[sortedLstIndex] }) ?? remainingLst.indices.first
sortedLstIndex = maxIndex
}
sortedLst.append(remainingLst.removeFirst())
sortedLstIndexIncrement *= -1
}
return sortedLst
}```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] {
if lst.count <= 1 {
return lst
}
var sortedLst = [Int]()
var sortedLstIndex = 0
var sortedLstIndexIncrement = 1
var remainingLst = lst
while !remainingLst.isEmpty {
if sortedLstIndexIncrement == 1 {
let minIndex = remainingLst.indices.first(where: { remainingLst[$0] < remainingLst[sortedLstIndex] }) ?? remainingLst.indices.first
sortedLstIndex = minIndex
} else {
let maxIndex = remainingLst.indices.first(where: { remainingLst[$0] > remainingLst[sortedLstIndex] }) ?? remainingLst.indices.first
sortedLstIndex = maxIndex
}
sortedLst.append(remainingLst.removeFirst())
sortedLstIndexIncrement *= -1
}
return sortedLst
}
``````
```swift
// Test cases
print(strangeSortList(lst: [1, 2, 3, 4])) // [1, 4, 2, 3]
print(strangeSortList(lst: [5, 5, 5, 5])) // [5, 5, 5, 5]
print(strangeSortList(lst: [] as [Int])) // []
```sortedLstIndex = minIndex // value of optional type 'Array<Int>.Index?' (aka 'Optional<Int>') must be unwrapped to a value of type 'Array<Int>.Index' (aka 'Int')sortedLstIndex = maxIndex // value of optional type 'Array<Int>.Index?' (aka 'Optional<Int>') must be unwrapped to a value of type 'Array<Int>.Index' (aka 'Int')func strangeSortList(lst: [Int]) -> [Int] {
var sortedLst = lst.sorted()
var result = [Int]()
while !sortedLst.isEmpty {
result.append(sortedLst.removeFirst())
if !sortedLst.isEmpty {
result.append(sortedLst.removeLast())
}
}
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 sortedLst = lst.sorted()
var result = [Int]()
while !sortedLst.isEmpty {
result.append(sortedLst.removeFirst())
if !sortedLst.isEmpty {
result.append(sortedLst.removeLast())
}
}
return result
}
`````````python
def strange_sort_list(lst):
sorted_lst = sorted(lst)
result = []
while sorted_lst:
result.append(sorted_lst.pop(0))
if sorted_lst:
result.append(sorted_lst.pop())
return result
print(strange_sort_list([1, 2, 3, 4]))
print(strange_sort_list([5, 5, 5, 5]))
print(strange_sort_list([]))
```func strangeSortList(lst: [Int]) -> [Int] {
if lst.count <= 1 {
return lst
}
var sortedLst = [Int]()
var sortedLstCount = 0
var sortedLstIndex = 0
var sortedLstMaxIndex = lst.count - 1
var sortedLstMinIndex = 0
while sortedLstCount < lst.count {
sortedLst.append(lst[sortedLstMinIndex])
sortedLstCount += 1
sortedLstIndex += 1
if sortedLstCount < lst.count {
sortedLst.append(lst[sortedLstMaxIndex])
sortedLstCount += 1
sortedLstIndex += 1
}
sortedLstMinIndex += 1
sortedLstMaxIndex -= 1
}
return sortedLst
}```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] {
if lst.count <= 1 {
return lst
}
var sortedLst = [Int]()
var sortedLstCount = 0
var sortedLstIndex = 0
var sortedLstMaxIndex = lst.count - 1
var sortedLstMinIndex = 0
while sortedLstCount < lst.count {
sortedLst.append(lst[sortedLstMinIndex])
sortedLstCount += 1
sortedLstIndex += 1
if sortedLstCount < lst.count {
sortedLst.append(lst[sortedLstMaxIndex])
sortedLstCount += 1
sortedLstIndex += 1
}
sortedLstMinIndex += 1
sortedLstMaxIndex -= 1
}
return sortedLst
}
``````
```swift
// Test cases
print(strangeSortList(lst: [1, 2, 3, 4])) // [1, 4, 2, 3]
print(strangeSortList(lst: [5, 5, 5, 5])) // [5, 5, 5, 5]
print(strangeSortList(lst: [] as [Int])) // []
``` // XCTAssertTrue failedfunc strangeSortList(lst: [Int]) -> [Int] {
var result = [Int]()
var sortedLst = lst.sorted()
while sortedLst.count > 0 {
result.append(sortedLst.removeFirst())
if sortedLst.count > 0 {
result.append(sortedLst.removeLast())
}
}
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 sortedLst = lst.sorted()
while sortedLst.count > 0 {
result.append(sortedLst.removeFirst())
if sortedLst.count > 0 {
result.append(sortedLst.removeLast())
}
}
return result
}
``````
```swift
// Test cases
print(strangeSortList(lst: [1, 2, 3, 4])) // [1, 4, 2, 3]
print(strangeSortList(lst: [5, 5, 5, 5])) // [5, 5, 5, 5]
print(strangeSortList(lst: [] as [Int])) // []
```func strangeSortList(lst: [Int]) -> [Int] {
var sortedArray = lst.sorted()
var result = [Int]()
while !sortedArray.isEmpty {
result.append(sortedArray.removeFirst())
if !sortedArray.isEmpty {
result.append(sortedArray.removeLast())
}
}
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 sortedArray = lst.sorted()
var result = [Int]()
while !sortedArray.isEmpty {
result.append(sortedArray.removeFirst())
if !sortedArray.isEmpty {
result.append(sortedArray.removeLast())
}
}
return result
}
``````
```swift
// Test cases
print(strangeSortList(lst: [1, 2, 3, 4])) // [1, 4, 2, 3]
print(strangeSortList(lst: [5, 5, 5, 5])) // [5, 5, 5, 5]
print(strangeSortList(lst: [] as [Int])) // []
```func strangeSortList(lst: [Int]) -> [Int] {
var sorted = lst.sorted()
var result = [Int]()
while !sorted.isEmpty {
result.append(sorted.removeFirst())
if !sorted.isEmpty {
result.append(sorted.removeLast())
}
}
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]()
while !sorted.isEmpty {
result.append(sorted.removeFirst())
if !sorted.isEmpty {
result.append(sorted.removeLast())
}
}
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]()
while !sorted.isEmpty {
result.append(sorted.removeFirst())
if !sorted.isEmpty {
result.append(sorted.removeLast())
}
}
return result
}
// Test cases
print(strangeSortList(lst: [1, 2, 3, 4])) // [1, 4, 2, 3]
print(strangeSortList(lst: [5, 5, 5, 5])) // [5, 5, 5, 5]
print(strangeSortList(lst: [] as [Int])) // []
```func strangeSortList(lst: [Int]) -> [Int] {
var sorted = lst.sorted()
var result = [Int]()
while !sorted.isEmpty {
result.append(sorted.removeFirst())
if !sorted.isEmpty {
result.append(sorted.removeLast())
}
}
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]()
while !sorted.isEmpty {
result.append(sorted.removeFirst())
if !sorted.isEmpty {
result.append(sorted.removeLast())
}
}
return result
}
`````````python
def strange_sort_list(lst):
sorted_lst = sorted(lst)
result = []
while sorted_lst:
result.append(sorted_lst.pop(0))
if sorted_lst:
result.append(sorted_lst.pop())
return result
```func strangeSortList(lst: [Int]) -> [Int] {
if lst.count <= 1 {
return lst
}
var sortedLst = [Int]()
var sortedLstIndex = 0
var sortedLstIndexIncrement = 1
var sortedLstIndexDecrement = -1
var remainingLst = lst
while !remainingLst.isEmpty {
var minMax = remainingLst[0]
var minMaxIndex = 0
for i in 1..<remainingLst.count {
if remainingLst[i] < minMax {
minMax = remainingLst[i]
minMaxIndex = i
}
}
sortedLst.insert(minMax, at: sortedLstIndex)
sortedLstIndex += sortedLstIndexIncrement
remainingLst.remove(at: minMaxIndex)
if remainingLst.isEmpty {
break
}
var maxMin = remainingLst[0]
var maxMinIndex = 0
for i in 1..<remainingLst.count {
if remainingLst[i] > maxMin {
maxMin = remainingLst[i]
maxMinIndex = i
}
}
sortedLst.insert(maxMin, at: sortedLstIndex)
sortedLstIndex += sortedLstIndexDecrement
remainingLst.remove(at: maxMinIndex)
}
return sortedLst
}```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] {
if lst.count <= 1 {
return lst
}
var sortedLst = [Int]()
var sortedLstIndex = 0
var sortedLstIndexIncrement = 1
var sortedLstIndexDecrement = -1
var remainingLst = lst
while !remainingLst.isEmpty {
var minMax = remainingLst[0]
var minMaxIndex = 0
for i in 1..<remainingLst.count {
if remainingLst[i] < minMax {
minMax = remainingLst[i]
minMaxIndex = i
}
}
sortedLst.insert(minMax, at: sortedLstIndex)
sortedLstIndex += sortedLstIndexIncrement
remainingLst.remove(at: minMaxIndex)
if remainingLst.isEmpty {
break
}
var maxMin = remainingLst[0]
var maxMinIndex = 0
for i in 1..<remainingLst.count {
if remainingLst[i] > maxMin {
maxMin = remainingLst[i]
maxMinIndex = i
}
}
sortedLst.insert(maxMin, at: sortedLstIndex)
sortedLstIndex += sortedLstIndexDecrement
remainingLst.remove(at: maxMinIndex)
}
return sortedLst
}
``````
```swift
// Test cases
print(strangeSortList(lst: [1, 2, 3, 4])) // [1, 4, 2, 3]
print(strangeSortList(lst: [5, 5, 5, 5])) // [5, 5, 5, 5]
print(strangeSortList(lst: [] as [Int])) // []
```var sortedLstIndexIncrement = 1 // variable 'sortedLstIndexIncrement' was never mutated; consider changing to 'let' constantvar sortedLstIndexDecrement = -1 // variable 'sortedLstIndexDecrement' was never mutated; consider changing to 'let' constant // XCTAssertTrue failedfunc triangleArea(a: Int, b: Int, c: Int) -> Double {
if a + b > c && a + c > b && b + c > a {
let s = Double(a + b + c) / 2
return sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
} else {
return -1
}
}
func countPrimes(n: Int) -> Int {
var isPrime = Array(repeating: true, count: n)
isPrime[0] = false
isPrime[1] = false
var count = 0
for i in 2..<n {
if isPrime[i] {
count += 1
for j in stride(from: i * i, through: n, by: i) {
isPrime[j] = false
}
}
}
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 {
if a + b > c && a + c > b && b + c > a {
let s = Double(a + b + c) / 2
return sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
} else {
return -1
}
}
``````
```swift
// Given a number n, return the number of prime numbers less than n.
// Example:
// countPrimes(n: 10) == 4
// countPrimes(n: 20) == 8
func countPrimes(n: Int) -> Int {
var isPrime = Array(repeating: true, count: n)
isPrime[0] = false
isPrime[1] = false
var count = 0
for i in 2..<n {
if isPrime[i] {
count += 1
for j in stride(from: i * i, through: n, by: i) {
isPrime[j] = false
}
}
}
return count
}
``` // XCTAssertTrue failedfunc triangleArea(a: Int, b: Int, c: Int) -> Double {
if a + b > c && a + c > b && b + c > a {
let s = Double(a + b + c) / 2
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
} else {
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 = Double(a + b + c) / 2
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
} else {
return -1
}
}
``````
```swift
func triangleArea(a: Int, b: Int, c: Int) -> Double {
if a + b > c && a + c > b && b + c > a {
let s = Double(a + b + c) / 2
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
} else {
return -1
}
}
// Test cases
print(triangleArea(a: 3, b: 4, c: 5)) // 6.0
print(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 = Double(a + b + c) / 2
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
} else {
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 = Double(a + b + c) / 2
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
} else {
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 = Double(a + b + c) / 2
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
} else {
return -1
}
}
```func triangleArea(a: Int, b: Int, c: Int) -> Double {
if a + b > c && a + c > b && b + c > a {
let s = Double(a + b + c) / 2.0
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
} else {
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 = Double(a + b + c) / 2.0
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
} else {
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 = Double(a + b + c) / 2.0
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
} else {
return -1
}
}
```func triangleArea(a: Int, b: Int, c: Int) -> Double {
if a + b > c && a + c > b && b + c > a {
let s = Double(a + b + c) / 2
return sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
}
return -1
}
func countVowels(_ str: String) -> Int {
let vowels = Set<Character>(["a", "e", "i", "o", "u"])
var count = 0
for char in str {
if vowels.contains(char.lowercased()) {
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 {
if a + b > c && a + c > b && b + c > a {
let s = Double(a + b + c) / 2
return sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
}
return -1
}
``````
```swift
// Given a string, return the number of vowels in the string.
// Example:
// countVowels("hello") == 2
// countVowels("world") == 1
func countVowels(_ str: String) -> Int {
let vowels = Set<Character>(["a", "e", "i", "o", "u"])
var count = 0
for char in str {
if vowels.contains(char.lowercased()) {
count += 1
}
}
return count
}
``` // XCTAssertTrue failedfunc triangleArea(a: Int, b: Int, c: Int) -> Double {
if a + b > c && a + c > b && b + c > a {
let s = Double(a + b + c) / 2
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
} else {
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 = Double(a + b + c) / 2
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
} else {
return -1
}
}
``````
```swift
func triangleArea(a: Int, b: Int, c: Int) -> Double {
if a + b > c && a + c > b && b + c > a {
let s = Double(a + b + c) / 2
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
} else {
return -1
}
}
// Test cases
print(triangleArea(a: 3, b: 4, c: 5)) // 6.0
print(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 = Double(a + b + c) / 2.0
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
} else {
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 = Double(a + b + c) / 2.0
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
} else {
return -1
}
}
``````
```swift
func triangleArea(a: Int, b: Int, c: Int) -> Double {
if a + b > c && a + c > b && b + c > a {
let s = Double(a + b + c) / 2.0
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
} else {
return -1
}
}
// Test cases
print(triangleArea(a: 3, b: 4, c: 5)) // 6.0
print(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 = Double(a + b + c) / 2
return sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
} else {
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 = Double(a + b + c) / 2
return sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
} else {
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 = Double(a + b + c) / 2
return sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
} else {
return -1
}
}
``` // XCTAssertTrue failedfunc triangleArea(a: Int, b: Int, c: Int) -> Double {
if a + b > c && a + c > b && b + c > a {
let s = Double(a + b + c) / 2
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
} else {
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 = Double(a + b + c) / 2
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
} else {
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 = Double(a + b + c) / 2
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
} else {
return -1
}
}
```func triangleArea(a: Int, b: Int, c: Int) -> Double {
if a + b > c && a + c > b && b + c > a {
let s = Double(a + b + c) / 2
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
}
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 = Double(a + b + c) / 2
let area = sqrt(s * (s - Double(a)) * (s - Double(b)) * (s - Double(c)))
return Double(round(area * 100) / 100)
}
return -1
}
``````
```python
# 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
def triangleArea(a: int, b: int, c: int) -> float:
if a + b > c and a + c > b and b + c > a:
s = (a + b + c) / 2
area = (s * (s - a) * (s - b) * (s - c)) ** 0.5
return round(area, 2)
return -1
```func willItFly(q: [Int], w: Int) -> Bool {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}```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 {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}
``````
```swift
func willItFly(q: [Int], w: Int) -> Bool {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}
willItFly(q: [1, 2], w: 5)
willItFly(q: [3, 2, 3], w: 1)
willItFly(q: [3, 2, 3], w: 9)
willItFly(q: [3], w: 5)
```func willItFly(q: [Int], w: Int) -> Bool {
let isPalindrome = q == q.reversed()
let sum = q.reduce(0, +)
return isPalindrome && sum <= w
}```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 {
let isPalindrome = q == q.reversed()
let sum = q.reduce(0, +)
return isPalindrome && sum <= w
}
``````
```swift
func willItFly(q: [Int], w: Int) -> Bool {
let isPalindrome = q == q.reversed()
let sum = q.reduce(0, +)
return isPalindrome && sum <= w
}
willItFly(q: [1, 2], w: 5)
willItFly(q: [3, 2, 3], w: 1)
willItFly(q: [3, 2, 3], w: 9)
willItFly(q: [3], w: 5)
```func willItFly(q: [Int], w: Int) -> Bool {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}```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 {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}
`````````swift
func willItFly(q: [Int], w: Int) -> Bool {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}
// Test cases
print(willItFly(q: [1, 2], w: 5)) // false
print(willItFly(q: [3, 2, 3], w: 1)) // false
print(willItFly(q: [3, 2, 3], w: 9)) // true
print(willItFly(q: [3], w: 5)) // true
```func willItFly(q: [Int], w: Int) -> Bool {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}```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 {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}
``````
```swift
// Test cases
print(willItFly(q: [1, 2], w: 5)) // false
print(willItFly(q: [3, 2, 3], w: 1)) // false
print(willItFly(q: [3, 2, 3], w: 9)) // true
print(willItFly(q: [3], w: 5)) // true
```func willItFly(q: [Int], w: Int) -> Bool {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}```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 {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}
``````
```swift
// Test cases
print(willItFly(q: [1, 2], w: 5)) // false
print(willItFly(q: [3, 2, 3], w: 1)) // false
print(willItFly(q: [3, 2, 3], w: 9)) // true
print(willItFly(q: [3], w: 5)) // true
```func willItFly(q: [Int], w: Int) -> Bool {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}```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 {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}
``````
```swift
print(willItFly(q: [1, 2], w: 5)) // false
print(willItFly(q: [3, 2, 3], w: 1)) // false
print(willItFly(q: [3, 2, 3], w: 9)) // true
print(willItFly(q: [3], w: 5)) // true
```func willItFly(q: [Int], w: Int) -> Bool {
let sum = q.reduce(0, +)
let isBalanced = q == q.reversed()
return sum <= w && isBalanced
}```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 {
let sum = q.reduce(0, +)
let isBalanced = q == q.reversed()
return sum <= w && isBalanced
}
`````````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 {
let sum = q.reduce(0, +)
let isBalanced = q == q.reversed()
return sum <= w && isBalanced
}
```func willItFly(q: [Int], w: Int) -> Bool {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}```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 {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}
`````````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 {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}
```func willItFly(q: [Int], w: Int) -> Bool {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}```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 {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}
`````````swift
func willItFly(q: [Int], w: Int) -> Bool {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}
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 {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}```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 {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}
`````````swift
func willItFly(q: [Int], w: Int) -> Bool {
let isBalanced = q == q.reversed()
let sum = q.reduce(0, +)
return isBalanced && sum <= w
}
willItFly(q: [1, 2], w: 5)
willItFly(q: [3, 2, 3], w: 1)
willItFly(q: [3, 2, 3], w: 9)
willItFly(q: [3], w: 5)
```func smallestChange(arr: [Int]) -> Int {
var changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}```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 changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}
``````
```swift
// Test cases
print(smallestChange(arr: [1, 2, 3, 5, 4, 7, 9, 6])) // 4
print(smallestChange(arr: [1, 2, 3, 4, 3, 2, 2])) // 1
print(smallestChange(arr: [1, 2, 3, 2, 1])) // 0
```func smallestChange(arr: [Int]) -> Int {
var changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}```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 changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}
``````
```swift
// Testing the function
print(smallestChange(arr: [1, 2, 3, 5, 4, 7, 9, 6])) // 4
print(smallestChange(arr: [1, 2, 3, 4, 3, 2, 2])) // 1
print(smallestChange(arr: [1, 2, 3, 2, 1])) // 0
```func smallestChange(arr: [Int]) -> Int {
var changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}```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 changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}
``````
```python
def smallest_change(arr):
changes = 0
left = 0
right = len(arr) - 1
while left < right:
if arr[left] != arr[right]:
changes += 1
left += 1
right -= 1
return changes
print(smallest_change([1, 2, 3, 5, 4, 7, 9, 6]))
print(smallest_change([1, 2, 3, 4, 3, 2, 2]))
print(smallest_change([1, 2, 3, 2, 1]))
```func smallestChange(arr: [Int]) -> Int {
var changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}```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 changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}
``````
```python
def smallest_change(arr):
changes = 0
left = 0
right = len(arr) - 1
while left < right:
if arr[left] != arr[right]:
changes += 1
left += 1
right -= 1
return changes
print(smallest_change([1, 2, 3, 5, 4, 7, 9, 6]))
print(smallest_change([1, 2, 3, 4, 3, 2, 2]))
print(smallest_change([1, 2, 3, 2, 1]))
```func smallestChange(arr: [Int]) -> Int {
var changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}```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 changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}
``````
```swift
// Testing the function
print(smallestChange(arr: [1, 2, 3, 5, 4, 7, 9, 6])) // 4
print(smallestChange(arr: [1, 2, 3, 4, 3, 2, 2])) // 1
print(smallestChange(arr: [1, 2, 3, 2, 1])) // 0
```func smallestChange(arr: [Int]) -> Int {
var changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}```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 changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}
``````
```swift
// Test cases
print(smallestChange(arr: [1, 2, 3, 5, 4, 7, 9, 6])) // 4
print(smallestChange(arr: [1, 2, 3, 4, 3, 2, 2])) // 1
print(smallestChange(arr: [1, 2, 3, 2, 1])) // 0
```func smallestChange(arr: [Int]) -> Int {
var changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}```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 changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}
``````
```swift
// Testing the function
print(smallestChange(arr: [1, 2, 3, 5, 4, 7, 9, 6])) // 4
print(smallestChange(arr: [1, 2, 3, 4, 3, 2, 2])) // 1
print(smallestChange(arr: [1, 2, 3, 2, 1])) // 0
```func smallestChange(arr: [Int]) -> Int {
var changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}```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 changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}
``````
```python
def smallestChange(arr):
changes = 0
left = 0
right = len(arr) - 1
while left < right:
if arr[left] != arr[right]:
changes += 1
left += 1
right -= 1
return changes
```func smallestChange(arr: [Int]) -> Int {
var changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}```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 changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}
``````
```swift
// Testing the function with some test cases
print(smallestChange(arr: [1, 2, 3, 5, 4, 7, 9, 6])) // Expected output: 4
print(smallestChange(arr: [1, 2, 3, 4, 3, 2, 2])) // Expected output: 1
print(smallestChange(arr: [1, 2, 3, 2, 1])) // Expected output: 0
```func smallestChange(arr: [Int]) -> Int {
var changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}```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 changes = 0
var left = 0
var right = arr.count - 1
while left < right {
if arr[left] != arr[right] {
changes += 1
}
left += 1
right -= 1
}
return changes
}
``````
```swift
// Testing the function
print(smallestChange(arr: [1, 2, 3, 5, 4, 7, 9, 6])) // 4
print(smallestChange(arr: [1, 2, 3, 4, 3, 2, 2])) // 1
print(smallestChange(arr: [1, 2, 3, 2, 1])) // 0
```func totalMatch(lst1: [String], lst2: [String]) -> [String] {
let total1 = lst1.reduce(0) { $0 + $1.count }
let total2 = lst2.reduce(0) { $0 + $1.count }
return total1 < total2 ? lst1 : 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] {
let total1 = lst1.reduce(0) { $0 + $1.count }
let total2 = lst2.reduce(0) { $0 + $1.count }
return total1 < total2 ? lst1 : 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] {
let total1 = lst1.reduce(0) { $0 + $1.count }
let total2 = lst2.reduce(0) { $0 + $1.count }
return total1 < total2 ? lst1 : lst2
}
``` // XCTAssertTrue failedfunc totalMatch(lst1: [String], lst2: [String]) -> [String] {
let total1 = lst1.reduce(0) { $0 + $1.count }
let total2 = lst2.reduce(0) { $0 + $1.count }
return total1 < total2 ? lst1 : 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] {
let total1 = lst1.reduce(0) { $0 + $1.count }
let total2 = lst2.reduce(0) { $0 + $1.count }
return total1 < total2 ? lst1 : 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] {
let total1 = lst1.reduce(0) { $0 + $1.count }
let total2 = lst2.reduce(0) { $0 + $1.count }
return total1 < total2 ? lst1 : lst2
}
``` // XCTAssertTrue failedfunc totalMatch(lst1: [String], lst2: [String]) -> [String] {
let total1 = lst1.reduce(0) { $0 + $1.count }
let total2 = lst2.reduce(0) { $0 + $1.count }
return total1 < total2 ? lst1 : 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] {
let total1 = lst1.reduce(0) { $0 + $1.count }
let total2 = lst2.reduce(0) { $0 + $1.count }
return total1 < total2 ? lst1 : 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] {
let total1 = lst1.reduce(0) { $0 + $1.count }
let total2 = lst2.reduce(0) { $0 + $1.count }
return total1 < total2 ? lst1 : lst2
}
``` // XCTAssertTrue failedfunc totalMatch(lst1: [String], lst2: [String]) -> [String] {
let total1 = lst1.map { $0.count }.reduce(0, +)
let total2 = lst2.map { $0.count }.reduce(0, +)
return total1 < total2 ? lst1 : 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] {
let total1 = lst1.map { $0.count }.reduce(0, +)
let total2 = lst2.map { $0.count }.reduce(0, +)
return total1 < total2 ? lst1 : 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] {
let total1 = lst1.map { $0.count }.reduce(0, +)
let total2 = lst2.map { $0.count }.reduce(0, +)
return total1 < total2 ? lst1 : lst2
}
``` // XCTAssertTrue failedfunc totalMatch(lst1: [String], lst2: [String]) -> [String] {
let total1 = lst1.reduce(0) { $0 + $1.count }
let total2 = lst2.reduce(0) { $0 + $1.count }
return total1 < total2 ? lst1 : 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] {
let total1 = lst1.reduce(0) { $0 + $1.count }
let total2 = lst2.reduce(0) { $0 + $1.count }
return total1 < total2 ? lst1 : lst2
}
`````````swift
func totalMatch(lst1: [String], lst2: [String]) -> [String] {
let total1 = lst1.reduce(0) { $0 + $1.count }
let total2 = lst2.reduce(0) { $0 + $1.count }
return total1 < total2 ? lst1 : lst2
}
// Test cases
print(totalMatch(lst1: [], lst2: [])) // []
print(totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "Hi"])) // ["hI", "Hi"]
print(totalMatch(lst1: ["hi", "admin"], lst2: ["hi", "hi", "admin", "project"])) // ["hi", "admin"]
print(totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "hi", "hi"])) // ["hI", "hi", "hi"]
print(totalMatch(lst1: ["4"], lst2: ["1", "2", "3", "4", "5"])) // ["4"]
``` // XCTAssertTrue failedfunc totalMatch(lst1: [String], lst2: [String]) -> [String] {
let total1 = lst1.reduce(0) { $0 + $1.count }
let total2 = lst2.reduce(0) { $0 + $1.count }
return total1 < total2 ? lst1 : 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] {
let total1 = lst1.reduce(0) { $0 + $1.count }
let total2 = lst2.reduce(0) { $0 + $1.count }
return total1 < total2 ? lst1 : lst2
}
`````````swift
func totalMatch(lst1: [String], lst2: [String]) -> [String] {
let total1 = lst1.reduce(0) { $0 + $1.count }
let total2 = lst2.reduce(0) { $0 + $1.count }
return total1 < total2 ? lst1 : lst2
}
// Test cases
print(totalMatch(lst1: [], lst2: [])) // []
print(totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "Hi"])) // ["hI", "Hi"]
print(totalMatch(lst1: ["hi", "admin"], lst2: ["hi", "hi", "admin", "project"])) // ["hi", "admin"]
print(totalMatch(lst1: ["hi", "admin"], lst2: ["hI", "hi", "hi"])) // ["hI", "hi", "hi"]
print(totalMatch(lst1: ["4"], lst2: ["1", "2", "3", "4", "5"])) // ["4"]
``` // XCTAssertTrue failedfunc totalMatch(lst1: [String], lst2: [String]) -> [String] {
let total1 = lst1.map { $0.count }.reduce(0, +)
let total2 = lst2.map { $0.count }.reduce(0, +)
return total1 < total2 ? lst1 : 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] {
let total1 = lst1.map { $0.count }.reduce(0, +)
let total2 = lst2.map { $0.count }.reduce(0, +)
return total1 < total2 ? lst1 : 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] {
let total1 = lst1.map { $0.count }.reduce(0, +)
let total2 = lst2.map { $0.count }.reduce(0, +)
return total1 < total2 ? lst1 : lst2
}
``` // XCTAssertTrue failedfunc totalMatch(lst1: [String], lst2: [String]) -> [String] {
let total1 = lst1.map { $0.count }.reduce(0, +)
let total2 = lst2.map { $0.count }.reduce(0, +)
return total1 < total2 ? lst1 : 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] {
let total1 = lst1.map { $0.count }.reduce(0, +)
let total2 = lst2.map { $0.count }.reduce(0, +)
return total1 < total2 ? lst1 : 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] {
let total1 = lst1.map { $0.count }.reduce(0, +)
let total2 = lst2.map { $0.count }.reduce(0, +)
return total1 < total2 ? lst1 : lst2
}
``` // XCTAssertTrue failedfunc totalMatch(lst1: [String], lst2: [String]) -> [String] {
let total1 = lst1.reduce(0) { $0 + $1.count }
let total2 = lst2.reduce(0) { $0 + $1.count }
return total1 < total2 ? lst1 : 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] {
let total1 = lst1.reduce(0) { $0 + $1.count }
let total2 = lst2.reduce(0) { $0 + $1.count }
return total1 < total2 ? lst1 : 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] {
let total1 = lst1.reduce(0) { $0 + $1.count }
let total2 = lst2.reduce(0) { $0 + $1.count }
return total1 < total2 ? lst1 : lst2
}
``` // XCTAssertTrue failedfunc totalMatch(lst1: [String], lst2: [String]) -> [String] {
let total1 = lst1.map { $0.count }.reduce(0, +)
let total2 = lst2.map { $0.count }.reduce(0, +)
return total1 < total2 ? lst1 : 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] {
let total1 = lst1.map { $0.count }.reduce(0, +)
let total2 = lst2.map { $0.count }.reduce(0, +)
return total1 < total2 ? lst1 : lst2
}
`````````python
def totalMatch(lst1, lst2):
total1 = sum(len(s) for s in lst1)
total2 = sum(len(s) for s in lst2)
return lst1 if total1 < total2 else lst2
print(totalMatch([], [])) # []
print(totalMatch(["hi", "admin"], ["hI", "Hi"])) # ["hI", "Hi"]
print(totalMatch(["hi", "admin"], ["hi", "hi", "admin", "project"])) # ["hi", "admin"]
print(totalMatch(["hi", "admin"], ["hI", "hi", "hi"])) # ["hI", "hi", "hi"]
print(totalMatch(["4"], ["1", "2", "3", "4", "5"])) # ["4"]
``` // XCTAssertTrue failedfunc isMultiplyPrime(a: Int) -> Bool {
var count = 0
var n = a
for i in 2...n {
while n % i == 0 {
count += 1
n /= i
}
}
return count == 3
}```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 count = 0
var n = a
for i in 2...n {
while n % i == 0 {
count += 1
n /= i
}
}
return count == 3
}
isMultiplyPrime(a: 30)
`````````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 count = 0
var n = a
for i in 2...n {
while n % i == 0 {
count += 1
n /= i
}
}
return count == 3
}
isMultiplyPrime(a: 30)
```func isMultiplyPrime(a: Int) -> Bool {
var count = 0
var num = a
for i in 2...num {
while num % i == 0 {
count += 1
num /= i
}
}
return count == 3
}```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 count = 0
var num = a
for i in 2...num {
while num % i == 0 {
count += 1
num /= i
}
}
return count == 3
}
``````
```swift
// Test the function
print(isMultiplyPrime(a: 30)) // Output: true
print(isMultiplyPrime(a: 42)) // Output: true
print(isMultiplyPrime(a: 100)) // Output: false
```func isMultiplyPrime(a: Int) -> Bool {
var count = 0
var n = a
for i in 2...n {
while n % i == 0 {
count += 1
n /= i
}
}
return count == 3
}```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 count = 0
var n = a
for i in 2...n {
while n % i == 0 {
count += 1
n /= i
}
}
return count == 3
}
isMultiplyPrime(a: 30)
``````func isMultiplyPrime(a: Int) -> Bool {
var count = 0
for i in 2...a {
if a % i == 0 {
count += 1
}
}
return count == 3
}```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 count = 0
for i in 2...a {
if a % i == 0 {
count += 1
}
}
return count == 3
}
isMultiplyPrime(a: 30)
`````` // XCTAssertTrue failedfunc isMultiplyPrime(a: Int) -> Bool {
var count = 0
for i in 2...a {
if a % i == 0 {
count += 1
}
}
return count == 3
}```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 count = 0
for i in 2...a {
if a % i == 0 {
count += 1
}
}
return count == 3
}
isMultiplyPrime(a: 30)
`````````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 count = 0
for i in 2...a {
if a % i == 0 {
count += 1
}
}
return count == 3
}
isMultiplyPrime(a: 30)
``` // XCTAssertTrue failedfunc isMultiplyPrime(a: Int) -> Bool {
var count = 0
var num = a
for i in 2...a {
while num % i == 0 {
count += 1
num /= i
}
}
return count == 3
}```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 count = 0
var num = a
for i in 2...a {
while num % i == 0 {
count += 1
num /= i
}
}
return count == 3
}
`````````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 count = 0
var num = a
for i in 2...a {
while num % i == 0 {
count += 1
num /= i
}
}
return count == 3
}
// Test the function
print(isMultiplyPrime(a: 30)) // Output: true
print(isMultiplyPrime(a: 42)) // Output: true
print(isMultiplyPrime(a: 100)) // Output: false
```func isMultiplyPrime(a: Int) -> Bool {
var count = 0
var n = a
for i in 2...n {
while n % i == 0 {
count += 1
n /= i
}
}
return count == 3
}```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 count = 0
var n = a
for i in 2...n {
while n % i == 0 {
count += 1
n /= i
}
}
return count == 3
}
`````````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 count = 0
var n = a
for i in 2...n {
while n % i == 0 {
count += 1
n /= i
}
}
return count == 3
}
// Test cases
print(isMultiplyPrime(a: 30)) // true
print(isMultiplyPrime(a: 42)) // true
print(isMultiplyPrime(a: 100)) // false
print(isMultiplyPrime(a: 17)) // false
```func isMultiplyPrime(a: Int) -> Bool {
var count = 0
for i in 2...a {
if a % i == 0 {
count += 1
}
}
return count == 3
}```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 count = 0
for i in 2...a {
if a % i == 0 {
count += 1
}
}
return count == 3
}
// Test
print(isMultiplyPrime(a: 30)) // true
`````````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 count = 0
for i in 2...a {
if a % i == 0 {
count += 1
}
}
return count == 3
}
// Test
print(isMultiplyPrime(a: 30)) // true
``` // XCTAssertTrue failedfunc isMultiplyPrime(a: Int) -> Bool {
var count = 0
var num = a
for i in 2...a {
while num % i == 0 {
count += 1
num /= i
}
}
return count == 3
}```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 count = 0
var num = a
for i in 2...a {
while num % i == 0 {
count += 1
num /= i
}
}
return count == 3
}
`````````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 count = 0
var num = a
for i in 2...a {
while num % i == 0 {
count += 1
num /= i
}
}
return count == 3
}
// Test cases
print(isMultiplyPrime(a: 30)) // true
print(isMultiplyPrime(a: 42)) // true
print(isMultiplyPrime(a: 100)) // false
print(isMultiplyPrime(a: 17)) // false
```func isMultiplyPrime(a: Int) -> Bool {
var count = 0
var num = a
for i in 2...a {
while num % i == 0 {
count += 1
num /= i
}
}
return count == 3
}```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 count = 0
var num = a
for i in 2...a {
while num % i == 0 {
count += 1
num /= i
}
}
return count == 3
}
// Test cases
print(isMultiplyPrime(a: 30)) // true
print(isMultiplyPrime(a: 42)) // true
print(isMultiplyPrime(a: 10)) // false
print(isMultiplyPrime(a: 12)) // 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 count = 0
var num = a
for i in 2...a {
while num % i == 0 {
count += 1
num /= i
}
}
return count == 3
}
// Test cases
print(isMultiplyPrime(a: 30)) // true
print(isMultiplyPrime(a: 42)) // true
print(isMultiplyPrime(a: 10)) // false
print(isMultiplyPrime(a: 12)) // false
```func isSimplePower(x: Int, n: Int) -> Bool {
if n == 1 {
return x == 1
}
var result = n
while result < x {
result *= n
}
return result == 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 {
if n == 1 {
return x == 1
}
var result = n
while result < x {
result *= n
}
return result == 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 {
if n == 1 {
return x == 1
}
var result = n
while result < x {
result *= n
}
return result == x
}
``` // XCTAssertTrue failedfunc isSimplePower(x: Int, n: Int) -> Bool {
if n == 1 {
return x == 1
}
var base = n
while base <= x {
if base == x {
return true
}
base *= n
}
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 {
if n == 1 {
return x == 1
}
var base = n
while base <= x {
if base == x {
return true
}
base *= n
}
return false
}
`````````swift
// Test cases
print(isSimplePower(x: 1, n: 4)) // true
print(isSimplePower(x: 2, n: 2)) // true
print(isSimplePower(x: 8, n: 2)) // true
print(isSimplePower(x: 3, n: 2)) // false
print(isSimplePower(x: 3, n: 1)) // false
print(isSimplePower(x: 5, n: 3)) // false
``` // XCTAssertTrue failedfunc isSimplePower(x: Int, n: Int) -> Bool {
if n == 1 {
return x == 1
}
var base = n
while base <= x {
if base == x {
return true
}
base *= n
}
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 {
if n == 1 {
return x == 1
}
var base = n
while base <= x {
if base == x {
return true
}
base *= n
}
return false
}
`````````swift
// Test cases
print(isSimplePower(x: 1, n: 4)) // true
print(isSimplePower(x: 2, n: 2)) // true
print(isSimplePower(x: 8, n: 2)) // true
print(isSimplePower(x: 3, n: 2)) // false
print(isSimplePower(x: 3, n: 1)) // false
print(isSimplePower(x: 5, n: 3)) // false
``` // XCTAssertTrue failedfunc isSimplePower(x: Int, n: Int) -> Bool {
if n == 1 {
return x == 1
}
var result = n
while result < x {
result *= n
}
return result == 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 {
if n == 1 {
return x == 1
}
var result = n
while result < x {
result *= n
}
return result == 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 {
if n == 1 {
return x == 1
}
var result = n
while result < x {
result *= n
}
return result == x
}
``` // XCTAssertTrue failedfunc isSimplePower(x: Int, n: Int) -> Bool {
if n == 1 {
return x == 1
}
var base = n
while base <= x {
if base == x {
return true
}
base *= n
}
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 {
if n == 1 {
return x == 1
}
var base = n
while base <= x {
if base == x {
return true
}
base *= n
}
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 {
if n == 1 {
return x == 1
}
var base = n
while base <= x {
if base == x {
return true
}
base *= n
}
return false
}
``` // XCTAssertTrue failedfunc isSimplePower(x: Int, n: Int) -> Bool {
if n == 1 {
return x == 1
}
var base = n
while base <= x {
if base == x {
return true
}
base *= n
}
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 {
if n == 1 {
return x == 1
}
var base = n
while base <= x {
if base == x {
return true
}
base *= n
}
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 {
if n == 1 {
return x == 1
}
var base = n
while base <= x {
if base == x {
return true
}
base *= n
}
return false
}
``` // XCTAssertTrue failedfunc isSimplePower(x: Int, n: Int) -> Bool {
if n == 1 {
return x == 1
}
var result = n
while result < x {
result *= n
}
return result == 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 {
if n == 1 {
return x == 1
}
var result = n
while result < x {
result *= n
}
return result == 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 {
if n == 1 {
return x == 1
}
var result = n
while result < x {
result *= n
}
return result == x
}
``` // XCTAssertTrue failedfunc isSimplePower(x: Int, n: Int) -> Bool {
if n == 1 {
return x == 1
}
var base = n
while base <= x {
if base == x {
return true
}
base *= n
}
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 {
if n == 1 {
return x == 1
}
var base = n
while base <= x {
if base == x {
return true
}
base *= n
}
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 {
if n == 1 {
return x == 1
}
var base = n
while base <= x {
if base == x {
return true
}
base *= n
}
return false
}
``` // XCTAssertTrue failedfunc isSimplePower(x: Int, n: Int) -> Bool {
if n == 1 {
return x == 1
}
var y = x
while y >= n {
if y % n != 0 {
return false
}
y /= n
}
return y == 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 {
if n == 1 {
return x == 1
}
var y = x
while y >= n {
if y % n != 0 {
return false
}
y /= n
}
return y == 1
}
`````````swift
func isSimplePower(x: Int, n: Int) -> Bool {
if n == 1 {
return x == 1
}
var y = x
while y >= n {
if y % n != 0 {
return false
}
y /= n
}
return y == 1
}
// Test cases
print(isSimplePower(x: 1, n: 4)) // true
print(isSimplePower(x: 2, n: 2)) // true
print(isSimplePower(x: 8, n: 2)) // true
print(isSimplePower(x: 3, n: 2)) // false
print(isSimplePower(x: 3, n: 1)) // false
print(isSimplePower(x: 5, n: 3)) // false
```func isSimplePower(x: Int, n: Int) -> Bool {
if n == 1 {
return x == 1
}
var y = x
while y >= n {
if y % n != 0 {
return false
}
y /= n
}
return y == 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 {
if n == 1 {
return x == 1
}
var y = x
while y >= n {
if y % n != 0 {
return false
}
y /= n
}
return y == 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 {
if n == 1 {
return x == 1
}
var y = x
while y >= n {
if y % n != 0 {
return false
}
y /= n
}
return y == 1
}
```func iscube(a: Int) -> Bool {
let cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == 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 cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == a
}
``````
```swift
// Test the function with some examples
print(iscube(a: 1)) // true
print(iscube(a: 2)) // false
print(iscube(a: -1)) // true
print(iscube(a: 64)) // true
print(iscube(a: 0)) // true
print(iscube(a: 180)) // false
``` // Fatal error: Double value cannot be converted to Int because it is either infinite or NaNfunc iscube(a: Int) -> Bool {
let cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == 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 cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == a
}
``````
```swift
// Test the function with the given examples
print(iscube(a: 1)) // true
print(iscube(a: 2)) // false
print(iscube(a: -1)) // true
print(iscube(a: 64)) // true
print(iscube(a: 0)) // true
print(iscube(a: 180)) // false
``` // Fatal error: Double value cannot be converted to Int because it is either infinite or NaNfunc iscube(a: Int) -> Bool {
let cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == 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 cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == a
}
``````
```swift
// Test cases
print(iscube(a: 1)) // true
print(iscube(a: 2)) // false
print(iscube(a: -1)) // true
print(iscube(a: 64)) // true
print(iscube(a: 0)) // true
print(iscube(a: 180)) // false
``` // Fatal error: Double value cannot be converted to Int because it is either infinite or NaNfunc iscube(a: Int) -> Bool {
let cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == 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 cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == a
}
``````
```swift
// Testing the function with provided examples
print(iscube(a: 1)) // true
print(iscube(a: 2)) // false
print(iscube(a: -1)) // true
print(iscube(a: 64)) // true
print(iscube(a: 0)) // true
print(iscube(a: 180)) // false
``` // Fatal error: Double value cannot be converted to Int because it is either infinite or NaNfunc iscube(a: Int) -> Bool {
let cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == 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 cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == a
}
``````
```swift
// Test the function with the provided examples
print(iscube(a: 1)) // true
print(iscube(a: 2)) // false
print(iscube(a: -1)) // true
print(iscube(a: 64)) // true
print(iscube(a: 0)) // true
print(iscube(a: 180)) // false
``` // Fatal error: Double value cannot be converted to Int because it is either infinite or NaNfunc iscube(a: Int) -> Bool {
let cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == 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 cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == a
}
``````
```swift
// Test cases
print(iscube(a: 1)) // true
print(iscube(a: 2)) // false
print(iscube(a: -1)) // true
print(iscube(a: 64)) // true
print(iscube(a: 0)) // true
print(iscube(a: 180)) // false
``` // Fatal error: Double value cannot be converted to Int because it is either infinite or NaNfunc iscube(a: Int) -> Bool {
let cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == 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 cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == a
}
``````
```swift
// Test the function with some examples
print(iscube(a: 1)) // true
print(iscube(a: 2)) // false
print(iscube(a: -1)) // true
print(iscube(a: 64)) // true
print(iscube(a: 0)) // true
print(iscube(a: 180)) // false
``` // Fatal error: Double value cannot be converted to Int because it is either infinite or NaNfunc iscube(a: Int) -> Bool {
let cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == 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 cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == a
}
``````
```swift
// Test the function with some examples
print(iscube(a: 1)) // true
print(iscube(a: 2)) // false
print(iscube(a: -1)) // true
print(iscube(a: 64)) // true
print(iscube(a: 0)) // true
print(iscube(a: 180)) // false
``` // Fatal error: Double value cannot be converted to Int because it is either infinite or NaNfunc iscube(a: Int) -> Bool {
let cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == 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 cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == a
}
``````
```swift
// Testing the function with the provided examples
print(iscube(a: 1)) // true
print(iscube(a: 2)) // false
print(iscube(a: -1)) // true
print(iscube(a: 64)) // true
print(iscube(a: 0)) // true
print(iscube(a: 180)) // false
``` // Fatal error: Double value cannot be converted to Int because it is either infinite or NaNfunc iscube(a: Int) -> Bool {
let cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == 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 cubeRoot = Int(pow(Double(a), 1.0/3.0))
return cubeRoot * cubeRoot * cubeRoot == a
}
``````
```swift
// Testing the function
print(iscube(a: 1)) // true
print(iscube(a: 2)) // false
print(iscube(a: -1)) // true
print(iscube(a: 64)) // true
print(iscube(a: 0)) // true
print(iscube(a: 180)) // false
``` // Fatal error: Double value cannot be converted to Int because it is either infinite or NaNfunc hexKey(num: String) -> Int {
let hexDigits: Set<Character> = ["2", "3", "5", "7", "B", "D"]
var count = 0
for digit in num {
if hexDigits.contains(digit) {
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 {
let hexDigits: Set<Character> = ["2", "3", "5", "7", "B", "D"]
var count = 0
for digit in num {
if hexDigits.contains(digit) {
count += 1
}
}
return count
}
``````
```swift
// Testing the function with provided examples
print(hexKey(num: "AB")) // 1
print(hexKey(num: "1077E")) // 2
print(hexKey(num: "ABED1A33")) // 4
print(hexKey(num: "123456789ABCDEF0")) // 6
print(hexKey(num: "2020")) // 2
```func hexKey(num: String) -> Int {
let hexDigits: Set<Character> = ["2", "3", "5", "7", "B", "D"]
var count = 0
for char in num {
if hexDigits.contains(char) {
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 {
let hexDigits: Set<Character> = ["2", "3", "5", "7", "B", "D"]
var count = 0
for char in num {
if hexDigits.contains(char) {
count += 1
}
}
return count
}
``````
```swift
func hexKey(num: String) -> Int {
let hexDigits: Set<Character> = ["2", "3", "5", "7", "B", "D"]
var count = 0
for char in num {
if hexDigits.contains(char) {
count += 1
}
}
return count
}
// Test cases
print(hexKey(num: "AB")) // 1
print(hexKey(num: "1077E")) // 2
print(hexKey(num: "ABED1A33")) // 4
print(hexKey(num: "123456789ABCDEF0")) // 6
print(hexKey(num: "2020")) // 2
```func hexKey(num: String) -> Int {
let hexDigits: Set<Character> = ["2", "3", "5", "7", "B", "D"]
var count = 0
for digit in num {
if hexDigits.contains(digit) {
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 {
let hexDigits: Set<Character> = ["2", "3", "5", "7", "B", "D"]
var count = 0
for digit in num {
if hexDigits.contains(digit) {
count += 1
}
}
return count
}
``````
```swift
// Testing the function
print(hexKey(num: "AB")) // 1
print(hexKey(num: "1077E")) // 2
print(hexKey(num: "ABED1A33")) // 4
print(hexKey(num: "123456789ABCDEF0")) // 6
print(hexKey(num: "2020")) // 2
```func hexKey(num: String) -> Int {
let primes = Set(["2", "3", "5", "7", "B", "D"])
var count = 0
for char in num {
if primes.contains(String(char)) {
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 {
let primes = Set(["2", "3", "5", "7", "B", "D"])
var count = 0
for char in num {
if primes.contains(String(char)) {
count += 1
}
}
return count
}
``````
```swift
// Testing the function with provided examples
print(hexKey(num: "AB")) // 1
print(hexKey(num: "1077E")) // 2
print(hexKey(num: "ABED1A33")) // 4
print(hexKey(num: "123456789ABCDEF0")) // 6
print(hexKey(num: "2020")) // 2
```func hexKey(num: String) -> Int {
let hexDigits: Set<Character> = ["2", "3", "5", "7", "B", "D"]
var count = 0
for digit in num {
if hexDigits.contains(digit) {
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 {
let hexDigits: Set<Character> = ["2", "3", "5", "7", "B", "D"]
var count = 0
for digit in num {
if hexDigits.contains(digit) {
count += 1
}
}
return count
}
``````
```swift
// Testing the function
print(hexKey(num: "AB")) // 1
print(hexKey(num: "1077E")) // 2
print(hexKey(num: "ABED1A33")) // 4
print(hexKey(num: "123456789ABCDEF0")) // 6
print(hexKey(num: "2020")) // 2
```func hexKey(num: String) -> Int {
let hexDigits: Set<Character> = ["2", "3", "5", "7", "B", "D"]
var count = 0
for char in num {
if hexDigits.contains(char) {
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 {
let hexDigits: Set<Character> = ["2", "3", "5", "7", "B", "D"]
var count = 0
for char in num {
if hexDigits.contains(char) {
count += 1
}
}
return count
}
``````
```swift
func hexKey(num: String) -> Int {
let hexDigits: Set<Character> = ["2", "3", "5", "7", "B", "D"]
var count = 0
for char in num {
if hexDigits.contains(char) {
count += 1
}
}
return count
}
// Test cases
print(hexKey(num: "AB")) // 1
print(hexKey(num: "1077E")) // 2
print(hexKey(num: "ABED1A33")) // 4
print(hexKey(num: "123456789ABCDEF0")) // 6
print(hexKey(num: "2020")) // 2
```func hexKey(num: String) -> Int {
let hexDigits: Set = ["2", "3", "5", "7", "B", "D"]
var count = 0
for digit in num {
if hexDigits.contains(String(digit)) {
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 {
let hexDigits: Set = ["2", "3", "5", "7", "B", "D"]
var count = 0
for digit in num {
if hexDigits.contains(String(digit)) {
count += 1
}
}
return count
}
``````
```swift
func hexKey(num: String) -> Int {
let hexDigits: Set = ["2", "3", "5", "7", "B", "D"]
var count = 0
for digit in num {
if hexDigits.contains(String(digit)) {
count += 1
}
}
return count
}
// Test cases
print(hexKey(num: "AB")) // 1
print(hexKey(num: "1077E")) // 2
print(hexKey(num: "ABED1A33")) // 4
print(hexKey(num: "123456789ABCDEF0")) // 6
print(hexKey(num: "2020")) // 2
```func hexKey(num: String) -> Int {
let hexDigits: Set<Character> = ["2", "3", "5", "7", "B", "D"]
var count = 0
for char in num {
if hexDigits.contains(char) {
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 {
let hexDigits: Set<Character> = ["2", "3", "5", "7", "B", "D"]
var count = 0
for char in num {
if hexDigits.contains(char) {
count += 1
}
}
return count
}
``````
```swift
// Testing the function
print(hexKey(num: "AB")) // 1
print(hexKey(num: "1077E")) // 2
print(hexKey(num: "ABED1A33")) // 4
print(hexKey(num: "123456789ABCDEF0")) // 6
print(hexKey(num: "2020")) // 2
```func hexKey(num: String) -> Int {
let hexDigits: Set<Character> = ["2", "3", "5", "7", "B", "D"]
var count = 0
for digit in num {
if hexDigits.contains(digit) {
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 {
let hexDigits: Set<Character> = ["2", "3", "5", "7", "B", "D"]
var count = 0
for digit in num {
if hexDigits.contains(digit) {
count += 1
}
}
return count
}
``````
```swift
// Testing the function
print(hexKey(num: "AB")) // Expected output: 1
print(hexKey(num: "1077E")) // Expected output: 2
print(hexKey(num: "ABED1A33")) // Expected output: 4
print(hexKey(num: "123456789ABCDEF0")) // Expected output: 6
print(hexKey(num: "2020")) // Expected output: 2
```func hexKey(num: String) -> Int {
let hexDigits: Set<Character> = ["2", "3", "5", "7", "B", "D"]
var count = 0
for char in num {
if hexDigits.contains(char) {
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 {
let hexDigits: Set<Character> = ["2", "3", "5", "7", "B", "D"]
var count = 0
for char in num {
if hexDigits.contains(char) {
count += 1
}
}
return count
}
``````
```swift
func hexKey(num: String) -> Int {
let hexDigits: Set<Character> = ["2", "3", "5", "7", "B", "D"]
var count = 0
for char in num {
if hexDigits.contains(char) {
count += 1
}
}
return count
}
// Test cases
print(hexKey(num: "AB")) // 1
print(hexKey(num: "1077E")) // 2
print(hexKey(num: "ABED1A33")) // 4
print(hexKey(num: "123456789ABCDEF0")) // 6
print(hexKey(num: "2020")) // 2
```func decimalToBinary(decimal: Int) -> String {
var binary = ""
var decimal = decimal
while decimal > 0 {
binary = String(decimal % 2) + binary
decimal = decimal / 2
}
return "db" + binary + "db"
}
func binaryToDecimal(binary: String) -> Int {
var decimal = 0
var power = 0
for digit in binary.dropFirst().dropLast() {
let value = Int(String(digit))
decimal += value * pow(2, power)
power += 1
}
return decimal
}```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 binary = ""
var decimal = decimal
while decimal > 0 {
binary = String(decimal % 2) + binary
decimal = decimal / 2
}
return "db" + binary + "db"
}
`````````swift
// You will be given a number in binary format and your task is to convert it to
// decimal format. The function should return an integer.
// 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:
// binaryToDecimal(binary: "db1111db") == 15
// binaryToDecimal(binary: "db100000db") == 32
func binaryToDecimal(binary: String) -> Int {
var decimal = 0
var power = 0
for digit in binary.dropFirst().dropLast() {
let value = Int(String(digit))
decimal += value * pow(2, power)
power += 1
}
return decimal
}
```decimal += value * pow(2, power) // value of optional type 'Int?' must be unwrapped to a value of type 'Int'decimal += value * pow(2, power) // cannot convert value of type 'Decimal' to expected argument type 'Int'func decimalToBinary(decimal: Int) -> String {
var binary = ""
var decimal = decimal
while decimal > 0 {
binary = String(decimal % 2) + binary
decimal /= 2
}
return "db" + binary + "db"
}
func binaryToDecimal(binary: String) -> Int {
var decimal = 0
var power = 0
for digit in binary.dropFirst().dropLast() {
if digit == "1" {
decimal += 2^power
}
power += 1
}
return decimal
}```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 binary = ""
var decimal = decimal
while decimal > 0 {
binary = String(decimal % 2) + binary
decimal /= 2
}
return "db" + binary + "db"
}
`````````swift
// You will be given a number in binary format and your task is to convert it to
// decimal format. The function should return an integer.
// 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:
// binaryToDecimal(binary: "db1111db") == 15
// binaryToDecimal(binary: "db100000db") == 32
func binaryToDecimal(binary: String) -> Int {
var decimal = 0
var power = 0
for digit in binary.dropFirst().dropLast() {
if digit == "1" {
decimal += 2^power
}
power += 1
}
return decimal
}
``` // XCTAssertTrue failedfunc decimalToBinary(decimal: Int) -> String {
var binary = ""
var decimal = decimal
while decimal > 0 {
binary = String(decimal % 2) + binary
decimal = 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 binary = ""
var decimal = decimal
while decimal > 0 {
binary = String(decimal % 2) + binary
decimal = decimal / 2
}
return "db" + binary + "db"
}
// Test cases
print(decimalToBinary(decimal: 15)) // "db1111db"
print(decimalToBinary(decimal: 32)) // "db100000db"
`````` // XCTAssertTrue failedfunc decimalToBinary(decimal: Int) -> String {
var binary = ""
var decimal = decimal
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 binary = ""
var decimal = decimal
while decimal > 0 {
binary = String(decimal % 2) + binary
decimal /= 2
}
return "db" + binary + "db"
}
// Testing the function
print(decimalToBinary(decimal: 15)) // "db1111db"
print(decimalToBinary(decimal: 32)) // "db100000db"
`````` // XCTAssertTrue failedfunc decimalToBinary(decimal: Int) -> String {
var binary = ""
var decimal = decimal
while decimal > 0 {
binary = String(decimal % 2) + binary
decimal = 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 binary = ""
var decimal = decimal
while decimal > 0 {
binary = String(decimal % 2) + binary
decimal = decimal / 2
}
return "db" + binary + "db"
}
// Testing the function
print(decimalToBinary(decimal: 15)) // Expected output: "db1111db"
print(decimalToBinary(decimal: 32)) // Expected output: "db100000db"
`````````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 binary = ""
var decimal = decimal
while decimal > 0 {
binary = String(decimal % 2) + binary
decimal = decimal / 2
}
return "db" + binary + "db"
}
// Testing the function
print(decimalToBinary(decimal: 15)) // Expected output: "db1111db"
print(decimalToBinary(decimal: 32)) // Expected output: "db100000db"
``` // XCTAssertTrue failedfunc decimalToBinary(decimal: Int) -> String {
var binary = ""
var decimal = decimal
while decimal > 0 {
binary = String(decimal % 2) + binary
decimal = 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 binary = ""
var decimal = decimal
while decimal > 0 {
binary = String(decimal % 2) + binary
decimal = decimal / 2
}
return "db" + binary + "db"
}
``````
```swift
// Testing the function with some examples
print(decimalToBinary(decimal: 15)) // Output: db1111db
print(decimalToBinary(decimal: 32)) // Output: db100000db
``` // XCTAssertTrue failedfunc decimalToBinary(decimal: Int) -> String {
var binary = ""
var decimal = decimal
while decimal > 0 {
binary = String(decimal % 2) + binary
decimal = decimal / 2
}
return "db" + binary + "db"
}
func binaryToDecimal(binary: String) -> Int {
var decimal = 0
var power = 0
for digit in binary.reversed() {
if digit == "1" {
decimal += 2^power
}
power += 1
}
return decimal
}```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 binary = ""
var decimal = decimal
while decimal > 0 {
binary = String(decimal % 2) + binary
decimal = decimal / 2
}
return "db" + binary + "db"
}
`````````swift
// You will be given a number in binary format and your task is to convert it to
// decimal format. The function should return an integer.
// 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:
// binaryToDecimal(binary: "db1111db") == 15
// binaryToDecimal(binary: "db100000db") == 32
func binaryToDecimal(binary: String) -> Int {
var decimal = 0
var power = 0
for digit in binary.reversed() {
if digit == "1" {
decimal += 2^power
}
power += 1
}
return decimal
}
``` // XCTAssertTrue failedfunc decimalToBinary(decimal: Int) -> String {
var binary = ""
var decimal = decimal
while decimal > 0 {
binary = String(decimal % 2) + binary
decimal /= 2
}
return "db" + binary + "db"
}
func binaryToDecimal(binary: String) -> Int {
var decimal = 0
for (index, char) in binary.enumerated() {
if char == "1" {
decimal += 2^(binary.count - index - 2)
}
}
return decimal
}```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 binary = ""
var decimal = decimal
while decimal > 0 {
binary = String(decimal % 2) + binary
decimal /= 2
}
return "db" + binary + "db"
}
// You will be given a number in binary format and your task is to convert it to
// decimal format. The function should return an integer.
// The input will be 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:
// binaryToDecimal(binary: "db1111db") == 15
// binaryToDecimal(binary: "db100000db") == 32
func binaryToDecimal(binary: String) -> Int {
var decimal = 0
for (index, char) in binary.enumerated() {
if char == "1" {
decimal += 2^(binary.count - index - 2)
}
}
return decimal
}
`````` // XCTAssertTrue failedfunc decimalToBinary(decimal: Int) -> String {
var binary = ""
var decimal = decimal
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 binary = ""
var decimal = decimal
while decimal > 0 {
binary = String(decimal % 2) + binary
decimal /= 2
}
return "db" + binary + "db"
}
// Test cases
print(decimalToBinary(decimal: 15)) // "db1111db"
print(decimalToBinary(decimal: 32)) // "db100000db"
print(decimalToBinary(decimal: 255)) // "db11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111 // XCTAssertTrue failedfunc decimalToBinary(decimal: Int) -> String {
var binary = ""
var decimal = decimal
while decimal > 0 {
binary = String(decimal % 2) + binary
decimal = 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 binary = ""
var decimal = decimal
while decimal > 0 {
binary = String(decimal % 2) + binary
decimal = decimal / 2
}
return "db" + binary + "db"
}
// Test cases
print(decimalToBinary(decimal: 15)) // "db1111db"
print(decimalToBinary(decimal: 32)) // "db100000db"
print(decimalToBinary(decimal: 255)) // "db111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111 // XCTAssertTrue failedfunc isHappy(s: String) -> Bool {
if s.count < 3 {
return false
}
for i in 0..<s.count-2 {
let substring = String(s[s.index(s.startIndex, offsetBy: i)..<s.index(s.startIndex, offsetBy: i+3)])
if substring.count != substring.reduce([], { if $0.contains($1) { return $0 } else { return $0 + [$1] } }).count {
return false
}
}
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 {
if s.count < 3 {
return false
}
for i in 0..<s.count-2 {
let substring = String(s[s.index(s.startIndex, offsetBy: i)..<s.index(s.startIndex, offsetBy: i+3)])
if substring.count != substring.reduce([], { if $0.contains($1) { return $0 } else { return $0 + [$1] } }).count {
return false
}
}
return true
}
``````
```swift
// Testing the isHappy function
print(isHappy(s: "a")) // false
print(isHappy(s: "aa")) // false
print(isHappy(s: "abcd")) // true
print(isHappy(s: "aabb")) // false
print(isHappy(s: "adb")) // true
print(isHappy(s: "xyy")) // false
```if substring.count != substring.reduce([], { if $0.contains($1) { return $0 } else { return $0 + [$1] } }).count { // cannot convert value of type 'String.Element' (aka 'Character') to expected argument type '(Any) throws -> Bool'if substring.count != substring.reduce([], { if $0.contains($1) { return $0 } else { return $0 + [$1] } }).count { // missing argument label 'where:' in callfunc isHappy(s: String) -> Bool {
if s.count < 3 {
return false
}
for i in 0..<s.count-2 {
let substring = String(s[s.index(s.startIndex, offsetBy: i)..<s.index(s.startIndex, offsetBy: i+3)])
if substring.count != substring.reduce([], { if $0.contains($1) { return $0 } else { return $0 + [$1] } }).count {
return false
}
}
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 {
if s.count < 3 {
return false
}
for i in 0..<s.count-2 {
let substring = String(s[s.index(s.startIndex, offsetBy: i)..<s.index(s.startIndex, offsetBy: i+3)])
if substring.count != substring.reduce([], { if $0.contains($1) { return $0 } else { return $0 + [$1] } }).count {
return false
}
}
return true
}
``````
```swift
// Testing the function
print(isHappy(s: "a")) // false
print(isHappy(s: "aa")) // false
print(isHappy(s: "abcd")) // true
print(isHappy(s: "aabb")) // false
print(isHappy(s: "adb")) // true
print(isHappy(s: "xyy")) // false
```if substring.count != substring.reduce([], { if $0.contains($1) { return $0 } else { return $0 + [$1] } }).count { // cannot convert value of type 'String.Element' (aka 'Character') to expected argument type '(Any) throws -> Bool'if substring.count != substring.reduce([], { if $0.contains($1) { return $0 } else { return $0 + [$1] } }).count { // missing argument label 'where:' in callfunc isHappy(s: String) -> Bool {
if s.count < 3 {
return false
}
for i in 0..<s.count-2 {
let substring = String(s[s.index(s.startIndex, offsetBy: i)..<s.index(s.startIndex, offsetBy: i+3)])
if substring.hasDuplicates() {
return false
}
}
return true
}
extension String {
func hasDuplicates() -> Bool {
var characters = Set<Character>()
for char in self {
if characters.contains(char) {
return true
}
characters.insert(char)
}
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 {
if s.count < 3 {
return false
}
for i in 0..<s.count-2 {
let substring = String(s[s.index(s.startIndex, offsetBy: i)..<s.index(s.startIndex, offsetBy: i+3)])
if substring.hasDuplicates() {
return false
}
}
return true
}
extension String {
func hasDuplicates() -> Bool {
var characters = Set<Character>()
for char in self {
if characters.contains(char) {
return true
}
characters.insert(char)
}
return false
}
}
`````````swift
// Test cases
print(isHappy(s: "a")) // false
print(isHappy(s: "aa")) // false
print(isHappy(s: "abcd")) // true
print(isHappy(s: "aabb")) // false
print(isHappy(s: "adb")) // true
print(isHappy(s: "xyy")) // false
```func isHappy(s: String) -> Bool {
if s.count < 3 {
return false
}
for i in 0..<s.count-2 {
let first = s[s.index(s.startIndex, offsetBy: i)]
let second = s[s.index(s.startIndex, offsetBy: i+1)]
let third = s[s.index(s.startIndex, offsetBy: i+2)]
if first == second || second == third || first == third {
return false
}
}
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 {
if s.count < 3 {
return false
}
for i in 0..<s.count-2 {
let first = s[s.index(s.startIndex, offsetBy: i)]
let second = s[s.index(s.startIndex, offsetBy: i+1)]
let third = s[s.index(s.startIndex, offsetBy: i+2)]
if first == second || second == third || first == third {
return false
}
}
return true
}
``````
```swift
// Test cases
print(isHappy(s: "a")) // false
print(isHappy(s: "aa")) // false
print(isHappy(s: "abcd")) // true
print(isHappy(s: "aabb")) // false
print(isHappy(s: "adb")) // true
print(isHappy(s: "xyy")) // false
```func isHappy(s: String) -> Bool {
if s.count < 3 {
return false
}
for i in 0..<s.count-2 {
let substring = String(s[s.index(s.startIndex, offsetBy: i)..<s.index(s.startIndex, offsetBy: i+3)])
if substring.count != substring.reduce(into: Set<Character>()).count {
return false
}
}
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 {
if s.count < 3 {
return false
}
for i in 0..<s.count-2 {
let substring = String(s[s.index(s.startIndex, offsetBy: i)..<s.index(s.startIndex, offsetBy: i+3)])
if substring.count != substring.reduce(into: Set<Character>()).count {
return false
}
}
return true
}
`````````swift
// Test cases
print(isHappy(s: "a")) // false
print(isHappy(s: "aa")) // false
print(isHappy(s: "abcd")) // true
print(isHappy(s: "aabb")) // false
print(isHappy(s: "adb")) // true
print(isHappy(s: "xyy")) // false
```if substring.count != substring.reduce(into: Set<Character>()).count { // missing argument for parameter #2 in callfunc isHappy(s: String) -> Bool {
if s.count < 3 {
return false
}
for i in 0..<s.count - 2 {
let substring = String(s[s.index(s.startIndex, offsetBy: i)..<s.index(s.startIndex, offsetBy: i + 3)])
if substring.hasDuplicates() {
return false
}
}
return true
}
extension String {
func hasDuplicates() -> Bool {
var characters = Set<Character>()
for char in self {
if characters.contains(char) {
return true
}
characters.insert(char)
}
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 {
if s.count < 3 {
return false
}
for i in 0..<s.count - 2 {
let substring = String(s[s.index(s.startIndex, offsetBy: i)..<s.index(s.startIndex, offsetBy: i + 3)])
if substring.hasDuplicates() {
return false
}
}
return true
}
extension String {
func hasDuplicates() -> Bool {
var characters = Set<Character>()
for char in self {
if characters.contains(char) {
return true
}
characters.insert(char)
}
return false
}
}
``````
```swift
// Test cases
print(isHappy(s: "a")) // false
print(isHappy(s: "aa")) // false
print(isHappy(s: "abcd")) // true
print(isHappy(s: "aabb")) // false
print(isHappy(s: "adb")) // true
print(isHappy(s: "xyy")) // false
```func isHappy(s: String) -> Bool {
if s.count < 3 {
return false
}
for i in 0..<s.count-2 {
let substring = String(s[s.index(s.startIndex, offsetBy: i)..<s.index(s.startIndex, offsetBy: i+3)])
if substring.count != substring.reduce([], { $0.contains($1) ? $0 : $0 + [$1] }).count {
return false
}
}
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 {
if s.count < 3 {
return false
}
for i in 0..<s.count-2 {
let substring = String(s[s.index(s.startIndex, offsetBy: i)..<s.index(s.startIndex, offsetBy: i+3)])
if substring.count != substring.reduce([], { $0.contains($1) ? $0 : $0 + [$1] }).count {
return false
}
}
return true
}
``````
```swift
// Test cases
print(isHappy(s: "a")) // false
print(isHappy(s: "aa")) // false
print(isHappy(s: "abcd")) // true
print(isHappy(s: "aabb")) // false
print(isHappy(s: "adb")) // true
print(isHappy(s: "xyy")) // false
```func isHappy(s: String) -> Bool {
if s.count < 3 {
return false
}
for i in 0..<s.count-2 {
let substring = String(s[s.index(s.startIndex, offsetBy: i)..<s.index(s.startIndex, offsetBy: i+3)])
if substring.hasDuplicates() {
return false
}
}
return true
}
extension String {
func hasDuplicates() -> Bool {
var characters = Set<Character>()
for character in self {
if characters.contains(character) {
return true
}
characters.insert(character)
}
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 {
if s.count < 3 {
return false
}
for i in 0..<s.count-2 {
let substring = String(s[s.index(s.startIndex, offsetBy: i)..<s.index(s.startIndex, offsetBy: i+3)])
if substring.hasDuplicates() {
return false
}
}
return true
}
extension String {
func hasDuplicates() -> Bool {
var characters = Set<Character>()
for character in self {
if characters.contains(character) {
return true
}
characters.insert(character)
}
return false
}
}
`````````swift
// Test cases
print(isHappy(s: "a")) // false
print(isHappy(s: "aa")) // false
print(isHappy(s: "abcd")) // true
print(isHappy(s: "aabb")) // false
print(isHappy(s: "adb")) // true
print(isHappy(s: "xyy")) // false
```func isHappy(s: String) -> Bool {
if s.count < 3 {
return false
}
for i in 0..<s.count-2 {
let substring = String(s[s.index(s.startIndex, offsetBy: i)..<s.index(s.startIndex, offsetBy: i+3)])
if substring.hasDuplicates() {
return false
}
}
return true
}
extension String {
func hasDuplicates() -> Bool {
let characters = Array(self)
for i in 0..<characters.count {
for j in i+1..<characters.count {
if characters[i] == characters[j] {
return true
}
}
}
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 {
if s.count < 3 {
return false
}
for i in 0..<s.count-2 {
let substring = String(s[s.index(s.startIndex, offsetBy: i)..<s.index(s.startIndex, offsetBy: i+3)])
if substring.hasDuplicates() {
return false
}
}
return true
}
extension String {
func hasDuplicates() -> Bool {
let characters = Array(self)
for i in 0..<characters.count {
for j in i+1..<characters.count {
if characters[i] == characters[j] {
return true
}
}
}
return false
}
}
``````
```swift
// Testing the isHappy function
print(isHappy(s: "a")) // false
print(isHappy(s: "aa")) // false
print(isHappy(s: "abcd")) // true
print(isHappy(s: "aabb")) // false
print(isHappy(s: "adb")) // true
print(isHappy(s: "xyy")) // false
```func isHappy(s: String) -> Bool {
if s.count < 3 {
return false
}
for i in 0..<s.count-2 {
let substring = String(s[s.index(s.startIndex, offsetBy: i)..<s.index(s.startIndex, offsetBy: i+3)])
if substring.hasDuplicates() {
return false
}
}
return true
}
extension String {
func hasDuplicates() -> Bool {
var characters = Set<Character>()
for char in self {
if characters.contains(char) {
return true
}
characters.insert(char)
}
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 {
if s.count < 3 {
return false
}
for i in 0..<s.count-2 {
let substring = String(s[s.index(s.startIndex, offsetBy: i)..<s.index(s.startIndex, offsetBy: i+3)])
if substring.hasDuplicates() {
return false
}
}
return true
}
extension String {
func hasDuplicates() -> Bool {
var characters = Set<Character>()
for char in self {
if characters.contains(char) {
return true
}
characters.insert(char)
}
return false
}
}
`````````swift
// Test cases
print(isHappy(s: "a")) // false
print(isHappy(s: "aa")) // false
print(isHappy(s: "abcd")) // true
print(isHappy(s: "aabb")) // false
print(isHappy(s: "adb")) // true
print(isHappy(s: "xyy")) // false
```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
}
`````````python
def numericalLetterGrade(grades):
letterGrades = []
for grade in grades:
if grade == 4.0:
letterGrades.append("A+")
elif grade > 3.7:
letterGrades.append("A")
elif grade > 3.3:
letterGrades.append("A-")
elif grade > 3.0:
letterGrades.append("B+")
elif grade > 2.7:
letterGrades.append("B")
elif grade > 2.3:
letterGrades.append("B-")
elif grade > 2.0:
letterGrades.append("C+")
elif grade > 1.7:
letterGrades.append("C")
elif grade > 1.3:
letterGrades.append("C-")
elif grade > 1.0:
letterGrades.append("D+")
elif grade > 0.7:
letterGrades.append("D")
elif grade > 0.0:
letterGrades.append("D-")
else:
letterGrades.append("E")
return letterGrades
grades = [4.0, 3, 1.7, 2, 3.5]
numericalLetterGrade(grades)
```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
}
`````````python
def numericalLetterGrade(grades):
letterGrades = []
for grade in grades:
if grade == 4.0:
letterGrades.append("A+")
elif grade > 3.7:
letterGrades.append("A")
elif grade > 3.3:
letterGrades.append("A-")
elif grade > 3.0:
letterGrades.append("B+")
elif grade > 2.7:
letterGrades.append("B")
elif grade > 2.3:
letterGrades.append("B-")
elif grade > 2.0:
letterGrades.append("C+")
elif grade > 1.7:
letterGrades.append("C")
elif grade > 1.3:
letterGrades.append("C-")
elif grade > 1.0:
letterGrades.append("D+")
elif grade > 0.7:
letterGrades.append("D")
elif grade > 0.0:
letterGrades.append("D-")
else:
letterGrades.append("E")
return letterGrades
numericalLetterGrade([4.0, 3, 1.7, 2, 3.5])
```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
}
``````func numericalLetterGrade(grades: [Double]) -> [String] {
var letterGrades = [String]()
for gpa in grades {
if gpa == 4.0 {
letterGrades.append("A+")
} else if gpa > 3.7 {
letterGrades.append("A")
} else if gpa > 3.3 {
letterGrades.append("A-")
} else if gpa > 3.0 {
letterGrades.append("B+")
} else if gpa > 2.7 {
letterGrades.append("B")
} else if gpa > 2.3 {
letterGrades.append("B-")
} else if gpa > 2.0 {
letterGrades.append("C+")
} else if gpa > 1.7 {
letterGrades.append("C")
} else if gpa > 1.3 {
letterGrades.append("C-")
} else if gpa > 1.0 {
letterGrades.append("D+")
} else if gpa > 0.7 {
letterGrades.append("D")
} else if gpa > 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 gpa in grades {
if gpa == 4.0 {
letterGrades.append("A+")
} else if gpa > 3.7 {
letterGrades.append("A")
} else if gpa > 3.3 {
letterGrades.append("A-")
} else if gpa > 3.0 {
letterGrades.append("B+")
} else if gpa > 2.7 {
letterGrades.append("B")
} else if gpa > 2.3 {
letterGrades.append("B-")
} else if gpa > 2.0 {
letterGrades.append("C+")
} else if gpa > 1.7 {
letterGrades.append("C")
} else if gpa > 1.3 {
letterGrades.append("C-")
} else if gpa > 1.0 {
letterGrades.append("D+")
} else if gpa > 0.7 {
letterGrades.append("D")
} else if gpa > 0.0 {
letterGrades.append("D-")
} else {
letterGrades.append("E")
}
}
return letterGrades
}
`````````swift
// The function `numericalLetterGrade` takes an array of GPAs as input and returns an array of letter grades based on the given table.
// The function iterates over each GPA in the input array and checks if it matches any of the conditions specified in the table.
// If a match is found, the corresponding letter grade is appended to the `letterGrades` array.
// Finally, the function returns the `letterGrades` array.
// Testing the function with the given example
let grades = [4.0, 3, 1.7, 2, 3.5]
let result = numericalLetterGrade(grades: grades)
print(result) // Output: ["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
}```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
}
``````
```python
def numericalLetterGrade(grades):
letterGrades = []
for grade in grades:
if grade == 4.0:
letterGrades.append("A+")
elif grade > 3.7:
letterGrades.append("A")
elif grade > 3.3:
letterGrades.append("A-")
elif grade > 3.0:
letterGrades.append("B+")
elif grade > 2.7:
letterGrades.append("B")
elif grade > 2.3:
letterGrades.append("B-")
elif grade > 2.0:
letterGrades.append("C+")
elif grade > 1.7:
letterGrades.append("C")
elif grade > 1.3:
letterGrades.append("C-")
elif grade > 1.0:
letterGrades.append("D+")
elif grade > 0.7:
letterGrades.append("D")
elif grade > 0.0:
letterGrades.append("D-")
else:
letterGrades.append("E")
return letterGrades
numericalLetterGrade([4.0, 3, 1.7, 2, 3.5])
```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
}
``````
```python
def numericalLetterGrade(grades):
letterGrades = []
for grade in grades:
if grade == 4.0:
letterGrades.append("A+")
elif grade > 3.7:
letterGrades.append("A")
elif grade > 3.3:
letterGrades.append("A-")
elif grade > 3.0:
letterGrades.append("B+")
elif grade > 2.7:
letterGrades.append("B")
elif grade > 2.3:
letterGrades.append("B-")
elif grade > 2.0:
letterGrades.append("C+")
elif grade > 1.7:
letterGrades.append("C")
elif grade > 1.3:
letterGrades.append("C-")
elif grade > 1.0:
letterGrades.append("D+")
elif grade > 0.7:
letterGrades.append("D")
elif grade > 0.0:
letterGrades.append("D-")
else:
letterGrades.append("E")
return letterGrades
numericalLetterGrade([4.0, 3, 1.7, 2, 3.5])
```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
}
`````````python
def numericalLetterGrade(grades):
letterGrades = []
for grade in grades:
if grade == 4.0:
letterGrades.append("A+")
elif grade > 3.7:
letterGrades.append("A")
elif grade > 3.3:
letterGrades.append("A-")
elif grade > 3.0:
letterGrades.append("B+")
elif grade > 2.7:
letterGrades.append("B")
elif grade > 2.3:
letterGrades.append("B-")
elif grade > 2.0:
letterGrades.append("C+")
elif grade > 1.7:
letterGrades.append("C")
elif grade > 1.3:
letterGrades.append("C-")
elif grade > 1.0:
letterGrades.append("D+")
elif grade > 0.7:
letterGrades.append("D")
elif grade > 0.0:
letterGrades.append("D-")
else:
letterGrades.append("E")
return letterGrades
numericalLetterGrade([4.0, 3, 1.7, 2, 3.5])
```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
}
``````
```python
def numericalLetterGrade(grades):
letterGrades = []
for grade in grades:
if grade == 4.0:
letterGrades.append("A+")
elif grade > 3.7:
letterGrades.append("A")
elif grade > 3.3:
letterGrades.append("A-")
elif grade > 3.0:
letterGrades.append("B+")
elif grade > 2.7:
letterGrades.append("B")
elif grade > 2.3:
letterGrades.append("B-")
elif grade > 2.0:
letterGrades.append("C+")
elif grade > 1.7:
letterGrades.append("C")
elif grade > 1.3:
letterGrades.append("C-")
elif grade > 1.0:
letterGrades.append("D+")
elif grade > 0.7:
letterGrades.append("D")
elif grade > 0.0:
letterGrades.append("D-")
else:
letterGrades.append("E")
return letterGrades
grades = [4.0, 3, 1.7, 2, 3.5]
numericalLetterGrade(grades)
```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
}
``````
```swift
// The function `numericalLetterGrade` takes an array of GPAs as input and returns an array of letter grades.
// It iterates over each GPA in the input array and checks which range it falls into to determine the corresponding letter grade.
// The function uses a series of if-else statements to compare the GPA with the defined ranges and append the corresponding letter grade to the `letterGrades` array.
// Finally, the function returns the `letterGrades` array.
// The function is expected to work correctly for the given example input.
```
```swift
// Testing the function with the given example input
let grades = [4.0, 3, 1.7, 2, 3.5]
let result = numericalLetterGrade(grades: grades)
print(result) // Output: ["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
}```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
}
`````````python
def numericalLetterGrade(grades):
letterGrades = []
for grade in grades:
if grade == 4.0:
letterGrades.append("A+")
elif grade > 3.7:
letterGrades.append("A")
elif grade > 3.3:
letterGrades.append("A-")
elif grade > 3.0:
letterGrades.append("B+")
elif grade > 2.7:
letterGrades.append("B")
elif grade > 2.3:
letterGrades.append("B-")
elif grade > 2.0:
letterGrades.append("C+")
elif grade > 1.7:
letterGrades.append("C")
elif grade > 1.3:
letterGrades.append("C-")
elif grade > 1.0:
letterGrades.append("D+")
elif grade > 0.7:
letterGrades.append("D")
elif grade > 0.0:
letterGrades.append("D-")
else:
letterGrades.append("E")
return letterGrades
numericalLetterGrade([4.0, 3, 1.7, 2, 3.5])
```func primeLength(string: String) -> Bool {
let length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
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 length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
`````````swift
// Test cases
print(primeLength(string: "Hello")) // true
print(primeLength(string: "abcdcba")) // true
print(primeLength(string: "kittens")) // true
print(primeLength(string: "orange")) // false
```func primeLength(string: String) -> Bool {
let length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
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 length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
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 length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
primeLength(string: "Hello")
```func primeLength(string: String) -> Bool {
let length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
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 length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
`````````swift
// Test the function with the given examples
print(primeLength(string: "Hello")) // true
print(primeLength(string: "abcdcba")) // true
print(primeLength(string: "kittens")) // true
print(primeLength(string: "orange")) // false
```func primeLength(string: String) -> Bool {
let length = string.count
if length <= 1 {
return false
}
for i in 2..<length {
if length % 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 length = string.count
if length <= 1 {
return false
}
for i in 2..<length {
if length % i == 0 {
return false
}
}
return true
}
primeLength(string: "Hello")
primeLength(string: "abcdcba")
primeLength(string: "kittens")
primeLength(string: "orange")
`````````python
def primeLength(string):
length = len(string)
if length <= 1:
return False
for i in range(2, length):
if length % i == 0:
return False
return True
primeLength("Hello")
primeLength("abcdcba")
primeLength("kittens")
primeLength("orange")
```func primeLength(string: String) -> Bool {
let length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
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 length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
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 length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
```func primeLength(string: String) -> Bool {
let length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
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 length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
`````````swift
// Test cases
print(primeLength(string: "Hello")) // true
print(primeLength(string: "abcdcba")) // true
print(primeLength(string: "kittens")) // true
print(primeLength(string: "orange")) // false
```func primeLength(string: String) -> Bool {
let length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
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 length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
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 length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
// Test cases
print(primeLength(string: "Hello")) // true
print(primeLength(string: "abcdcba")) // true
print(primeLength(string: "kittens")) // true
print(primeLength(string: "orange")) // false
```func primeLength(string: String) -> Bool {
let length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
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 length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
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 length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
```func primeLength(string: String) -> Bool {
let length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
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 length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
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 length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
// Test cases
print(primeLength(string: "Hello")) // true
print(primeLength(string: "abcdcba")) // true
print(primeLength(string: "kittens")) // true
print(primeLength(string: "orange")) // false
```func primeLength(string: String) -> Bool {
let length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
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 length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
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 length = string.count
if length <= 1 {
return false
}
if length <= 3 {
return true
}
if length % 2 == 0 || length % 3 == 0 {
return false
}
var i = 5
while i * i <= length {
if length % i == 0 || length % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
``````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 {
if n == 1 {
return 2
}
let first = pow(10, n-1)
let second = pow(10, n-2)
let third = pow(10, n-3)
let fourth = pow(10, n-4)
let fifth = pow(10, n-5)
let sixth = pow(10, n-6)
let seventh = pow(10, n-7)
let eighth = pow(10, n-8)
let ninth = pow(10, n-9)
let tenth = pow(10, n-10)
let eleventh = pow(10, n-11)
let twelfth = pow(10, n-12)
let thirteenth = pow(10, n-13)
let fourteenth = pow(10, n-14)
let fifteenth = pow(10, n-15)
let sixteenth = pow(10, n-16)
let seventeenth = pow(10, n-17)
let eighteenth = pow(10, n-18)
let nineteenth = pow(10, n-19)
let twentieth = pow(10, n-20)
let twentyfirst = pow(10, n-21)
let twentysecond = pow(10, n-22)
let twentythird = pow(10, n-23)
let twentyfourth = pow(10, n-24)
let twentyfifth = pow(10, n-25)
let twentysixth = pow(10, n-26)
let twentyseventh = pow(10, n-27)
let twentyeighth = pow(10, n-28)
let twentyninth = pow(10, n-29)
let thirtieth = pow(10, n-30)
let thirtyfirst = pow(10, n-31)
let thirtysecond = pow(10, n-32)
let thirtythird = pow(10, n-33)
let thirtyfourth = pow(10, n-34)
let thirtyfifth = pow(10, n-35)
let thirtysixth = pow(10, n-36)
let thirtyseventh = pow(10, n-37)
let thirtyeighth = pow(10, n-38)
let thirtyninth = pow(10, n-39)
let fortieth = pow(10, n-40)
let fortyfirst = pow(10, n-41)
let fortysecond = pow(10, n-42)
let fortythird = pow(10, n-43)
let fortyfourth = pow(10, n-44)
let fortyfifth = pow(10, n-45)
let fortysixth = pow(10, n-46)
let fortyseventh = pow(10, n-47)
let fortyeighth = pow(10, n-48)
let fortyninth = pow(10, n-49)
let fiftieth = pow(10, n-50)
let fiftyfirst = pow(10, n-51)
let fiftysecond = pow(10, n-52)
let fiftythird = pow(10, n-53)
let fiftyfourth = pow(10, n-54)
let fiftyfifth = pow(10, n-55)
let fiftysixth = pow(10, n-56)
let fiftyseventh = pow(10, n-57)
let fiftyeighth = pow(10, n-58)
let fiftyninth = pow(10, n-59)
let sixtieth = pow(10, n-60)
let sixtyfirst = pow(10, n-61)
let sixtysecond = powXCTAssertTrue(startsOneEnds(n: 1) == 1) // cannot find 'startsOneEnds' in scopeXCTAssertTrue(startsOneEnds(n: 2) == 18) // cannot find 'startsOneEnds' in scopeXCTAssertTrue(startsOneEnds(n: 3) == 180) // cannot find 'startsOneEnds' in scopeXCTAssertTrue(startsOneEnds(n: 4) == 1800) // cannot find 'startsOneEnds' in scopeXCTAssertTrue(startsOneEnds(n: 5) == 18000) // cannot find 'startsOneEnds' in scopefunc startsOneEnds(n: Int) -> Int {
if n == 1 {
return 2
}
let firstDigit = pow(10, n-1)
let lastDigit = pow(10, n-2)
return Int(firstDigit + lastDigit)
}```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 {
if n == 1 {
return 2
}
let firstDigit = pow(10, n-1)
let lastDigit = pow(10, n-2)
return Int(firstDigit + lastDigit)
}
// 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 {
if n == 1 {
return 2
}
let firstDigit = pow(10, n-1)
let lastDigit = pow(10, n-2)
return Int(firstDigit + lastDigit)
}
// 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 {
if n == 1 {
return 2
}
let firstDigit = pow(10, n-1)
let lastDigit = pow(10, n-2)
return Int(firstDigit + lastDigit)
}
// 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 {
if n == 1 {
return 2
}
let firstDigit = pow(10, n-1)
let lastDigit = pow(10, n-2)
return Int(firstDigit + lastDigit)
}
// 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 {
if n == 1 {
return 2
}
let firstDigit = pow(10, n-1)
let lastDigit = pow(10, n-2)
return Int(firstDigit + lastDigit)
}
// 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 {
if n == 1 {
return 2
}
let firstDigit = pow(10, n-1)
let lastDigit = pow(10, n-2)
return Int(firstDigit + lastDigit)
}
// 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 {
if n == 1 {
return 2
}
let firstDigit = pow(10, n-1)
let lastDigit = pow(10, n-2)
return Int(firstDigit + lastDigit)
}
// 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 {
if n == 1 {
return 2
}
let firstDigit = pow(10, n-1)
let lastDigit = pow(10, n-2)
return Int(firstDigit + lastDigit)
}
// 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 {
if n == 1 {
return 2
}
let firstDigit = pow(10, n-1)
let lastDigit = pow(10, n-2)
return Int(firstDigit + lastDigit)
}
// 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 {
if n == 1 {
return 2
}
let firstDigit = pow(10, n-1)
let lastDigit = pow(10,return Int(firstDigit + lastDigit) // no exact matches in call to initializerfunc startsOneEnds(n: Int) -> Int {
if n == 1 {
return 2
}
let first = pow(10, n-1)
let second = pow(10, n-2)
return Int(first + second)
}```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 {
if n == 1 {
return 2
}
let first = pow(10, n-1)
let second = pow(10, n-2)
return Int(first + second)
}
// 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 {
if n == 1 {
return 2
}
let first = pow(10, n-1)
let second = pow(10, n-2)
return Int(first + second)
}
// 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 {
if n == 1 {
return 2
}
let first = pow(10, n-1)
let second = pow(10, n-2)
return Int(first + second)
}
// 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 {
if n == 1 {
return 2
}
let first = pow(10, n-1)
let second = pow(10, n-2)
return Int(first + second)
}
// 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 {
if n == 1 {
return 2
}
let first = pow(10, n-1)
let second = pow(10, n-2)
return Int(first + second)
}
// 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 {
if n == 1 {
return 2
}
let first = pow(10, n-1)
let second = pow(10, n-2)
return Int(first + second)
}
// 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 {
if n == 1 {
return 2
}
let first = pow(10, n-1)
let second = pow(10, n-2)
return Int(first + second)
}
// 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 {
if n == 1 {
return 2
}
let first = pow(10, n-1)
let second = pow(10, n-2)
return Int(first + second)
}
// 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 {
if n == 1 {
return 2
}
let first = pow(10, n-1)
let second = pow(10, n-2)
return Int(first + second)
}
// 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 {
if n == 1 {
return 2
}
let first = pow(10, n-1)
let second = pow(10, n-2)
return Int(first + second)
}
// 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 {
if n == 1 {
return 2
return Int(first + second) // no exact matches in call to initializerfunc startsOneEnds(n: Int) -> Int {
if n == 1 {
return 2
}
let firstDigit = Int(pow(10.0, Double(n-1)))
let lastDigit = Int(pow(10.0, Double(n-2)))
return firstDigit + lastDigit
}```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 {
if n == 1 {
return 2
}
let firstDigit = Int(pow(10.0, Double(n-1)))
let lastDigit = Int(pow(10.0, Double(n-2)))
return firstDigit + lastDigit
}
// 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 {
if n == 1 {
return 2
}
let firstDigit = Int(pow(10.0, Double(n-1)))
let lastDigit = Int(pow(10.0, Double(n-2)))
return firstDigit + lastDigit
}
``````python
def starts_one_ends(n):
if n == 1:
return 2
first_digit = 10 ** (n-1)
last_digit = 10 ** (n-2)
return first_digit + last_digit
starts_one_ends(2)
``` // XCTAssertTrue failedfunc startsOneEnds(n: Int) -> Int {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner + inner)
}```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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner + inner)
}
// 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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner + inner)
}
// 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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner + inner)
}
// 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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner + inner)
}
// 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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner + inner)
}
// 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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner + inner)
}
// 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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner + inner)
}
// 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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner + inner)
}
// 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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner + inner)
}
// 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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner + inner)
}
// Given a positive integer n, return the count of the numbers of n-digit
return Int(startEnd + inner + inner) // no exact matches in call to initializerfunc startsOneEnds(n: Int) -> Int {
if n == 1 {
return 2
}
let first = Int(pow(10.0, Double(n-1)))
let last = Int(pow(10.0, Double(n))) - 1
let mid = last / 10
return (last - first + 1) / 10 + mid + 1
}```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 {
if n == 1 {
return 2
}
let first = Int(pow(10.0, Double(n-1)))
let last = Int(pow(10.0, Double(n))) - 1
let mid = last / 10
return (last - first + 1) / 10 + mid + 1
}
``````
```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 {
if n == 1 {
return 2
}
let first = Int(pow(10.0, Double(n-1)))
let last = Int(pow(10.0, Double(n))) - 1
let mid = last / 10
return (last - first + 1) / 10 + mid + 1
}
``` // XCTAssertTrue failedfunc startsOneEnds(n: Int) -> Int {
if n == 1 {
return 2
}
let firstDigit = Int(pow(10.0, Double(n-1)))
let lastDigit = Int(pow(10.0, Double(n-2)))
return firstDigit + lastDigit
}```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 {
if n == 1 {
return 2
}
let firstDigit = Int(pow(10.0, Double(n-1)))
let lastDigit = Int(pow(10.0, Double(n-2)))
return firstDigit + lastDigit
}
// Test
startsOneEnds(n: 1) // 2
startsOneEnds(n: 2) // 9
startsOneEnds(n: 3) // 90
`````````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 {
if n == 1 {
return 2
}
let firstDigit = Int(pow(10.0, Double(n-1)))
let lastDigit = Int(pow(10.0, Double(n-2)))
return firstDigit + lastDigit
}
// Test
startsOneEnds(n: 1) // 2
startsOneEnds(n: 2) // 9
startsOneEnds(n: 3) // 90
``` // XCTAssertTrue failedfunc startsOneEnds(n: Int) -> Int {
if n == 1 {
return 2
} else {
return 2 * startsOneEnds(n: n - 1)
}
}```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 {
if n == 1 {
return 2
} else {
return 2 * startsOneEnds(n: n - 1)
}
}
// Test the function
print(startsOneEnds(n: 1)) // 2
print(startsOneEnds(n: 2)) // 4
print(startsOneEnds(n: 3)) // 8
`````` // XCTAssertTrue failedfunc startsOneEnds(n: Int) -> Int {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner * 2)
}```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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner * 2)
}
// 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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner * 2)
}
// 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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner * 2)
}
// 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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner * 2)
}
// 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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner * 2)
}
// 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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner * 2)
}
// 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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner * 2)
}
// 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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner * 2)
}
// 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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner * 2)
}
// 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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner * 2)
}
// Given a positive integer n, return thereturn Int(startEnd + inner * 2) // no exact matches in call to initializerfunc startsOneEnds(n: Int) -> Int {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner * 2)
}```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 {
if n == 1 {
return 2
}
let startEnd = pow(10, n-1)
let inner = pow(10, n-2)
return Int(startEnd + inner * 2)
}
// Test
print(startsOneEnds(n: 1)) // 2
print(startsOneEnds(n: 2)) // 10
print(startsOneEnds(n: 3)) // 20
``````return Int(startEnd + inner * 2) // no exact matches in call to initializerfunc solve(N: Int) -> String {
var result = ""
var number = N
while number > 0 {
result = String(number % 2) + result
number /= 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 number = N
while number > 0 {
result = String(number % 2) + result
number /= 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 number = N
while number > 0 {
result = String(number % 2) + result
number /= 2
}
return result
}
``` // XCTAssertTrue failedfunc solve(N: Int) -> String {
var binaryString = ""
var num = N
while num > 0 {
binaryString = String(num % 2) + binaryString
num /= 2
}
return binaryString
}```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 binaryString = ""
var num = N
while num > 0 {
binaryString = String(num % 2) + binaryString
num /= 2
}
return binaryString
}
``````
```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 binaryString = ""
var num = N
while num > 0 {
binaryString = String(num % 2) + binaryString
num /= 2
}
return binaryString
}
``` // XCTAssertTrue failedfunc solve(N: Int) -> String {
var result = ""
var number = N
while number > 0 {
result = String(number % 2) + result
number /= 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 number = N
while number > 0 {
result = String(number % 2) + result
number /= 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 number = N
while number > 0 {
result = String(number % 2) + result
number /= 2
}
return result
}
``` // XCTAssertTrue failedfunc solve(N: Int) -> String {
var result = ""
var number = N
while number > 0 {
result = String(number % 2) + result
number /= 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 number = N
while number > 0 {
result = String(number % 2) + result
number /= 2
}
return result
}
``````
```swift
func solve(N: Int) -> String {
var result = ""
var number = N
while number > 0 {
result = String(number % 2) + result
number /= 2
}
return result
}
solve(N: 1000) // "1"
solve(N: 150) // "110"
solve(N: 147) // "1100"
``` // XCTAssertTrue failedfunc solve(N: Int) -> String {
var result = ""
var number = N
while number > 0 {
result = String(number % 2) + result
number /= 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 number = N
while number > 0 {
result = String(number % 2) + result
number /= 2
}
return result
}
``````
```swift
func solve(N: Int) -> String {
var result = ""
var number = N
while number > 0 {
result = String(number % 2) + result
number /= 2
}
return result
}
print(solve(N: 1000)) // "1"
print(solve(N: 150)) // "110"
print(solve(N: 147)) // "1100"
``` // XCTAssertTrue failedfunc solve(N: Int) -> String {
var result = ""
var number = N
while number > 0 {
result = String(number % 2) + result
number /= 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 number = N
while number > 0 {
result = String(number % 2) + result
number /= 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 number = N
while number > 0 {
result = String(number % 2) + result
number /= 2
}
return result
}
``` // XCTAssertTrue failedfunc solve(N: Int) -> String {
var result = ""
var number = N
while number > 0 {
result = String(number % 2) + result
number /= 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 number = N
while number > 0 {
result = String(number % 2) + result
number /= 2
}
return result
}
``````
```python
def solve(N):
result = ""
number = N
while number > 0:
result = str(number % 2) + result
number //= 2
return result
``` // XCTAssertTrue failedfunc solve(N: Int) -> String {
var result = ""
var number = N
while number > 0 {
result = String(number % 2) + result
number /= 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 number = N
while number > 0 {
result = String(number % 2) + result
number /= 2
}
return result
}
``````
```swift
func solve(N: Int) -> String {
var result = ""
var number = N
while number > 0 {
result = String(number % 2) + result
number /= 2
}
return result
}
// Test cases
print(solve(N: 1000)) // "1"
print(solve(N: 150)) // "110"
print(solve(N: 147)) // "1100"
``` // XCTAssertTrue failedfunc solve(N: Int) -> String {
var binaryString = ""
var number = N
while number > 0 {
binaryString = String(number % 2) + binaryString
number /= 2
}
return binaryString
}```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 binaryString = ""
var number = N
while number > 0 {
binaryString = String(number % 2) + binaryString
number /= 2
}
return binaryString
}
``````
```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 binaryString = ""
var number = N
while number > 0 {
binaryString = String(number % 2) + binaryString
number /= 2
}
return binaryString
}
``` // XCTAssertTrue failedfunc solve(N: Int) -> String {
var result = ""
var number = N
while number > 0 {
result = String(number % 2) + result
number /= 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 number = N
while number > 0 {
result = String(number % 2) + result
number /= 2
}
return result
}
``````
```swift
func solve(N: Int) -> String {
var result = ""
var number = N
while number > 0 {
result = String(number % 2) + result
number /= 2
}
return result
}
// Test cases
print(solve(N: 1000)) // "1"
print(solve(N: 150)) // "110"
print(solve(N: 147)) // "1100"
``` // XCTAssertTrue failedfunc add(lst: [Int]) -> Int {
var sum = 0
for i in 1..<lst.count {
if i % 2 != 0 && lst[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 1..<lst.count {
if i % 2 != 0 && lst[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 1..<lst.count {
if i % 2 != 0 && lst[i] % 2 == 0 {
sum += lst[i]
}
}
return sum
}
```func add(lst: [Int]) -> Int {
var sum = 0
for i in 1..<lst.count {
if i % 2 != 0 && lst[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 1..<lst.count {
if i % 2 != 0 && lst[i] % 2 == 0 {
sum += lst[i]
}
}
return sum
}
add(lst: [4, 2, 6, 7]) // 2
add(lst: [1, 2, 3, 4, 5]) // 6
add(lst: [5, 3, 2, 4, 1]) // 6
add(lst: [1, 1, 1, 1, 1]) // 0
add(lst: [2, 2, 2, 2, 2]) // 10
`````````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 1..<lst.count {
if i % 2 != 0 && lst[i] % 2 == 0 {
sum += lst[i]
}
}
return sum
}
add(lst: [4, 2, 6, 7]) // 2
add(lst: [1, 2, 3, 4, 5]) // 6
add(lst: [5, 3, 2, 4, 1]) // 6
add(lst: [1, 1, 1, 1, 1]) // 0
add(lst: [2, 2, 2, 2, 2]) // 10
```func add(lst: [Int]) -> Int {
var sum = 0
for i in 1..<lst.count {
if i % 2 != 0 && lst[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 1..<lst.count {
if i % 2 != 0 && lst[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 1..<lst.count {
if i % 2 != 0 && lst[i] % 2 == 0 {
sum += lst[i]
}
}
return sum
}
```func add(lst: [Int]) -> Int {
var sum = 0
for i in 1..<lst.count {
if i % 2 != 0 && lst[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 1..<lst.count {
if i % 2 != 0 && lst[i] % 2 == 0 {
sum += lst[i]
}
}
return sum
}
add(lst: [4, 2, 6, 7]) // 2
add(lst: [1, 2, 3, 4, 5]) // 6
add(lst: [5, 3, 2, 4, 1]) // 0
add(lst: [1, 2, 3, 4, 5, 6]) // 8
add(lst: [6, 4, 2, 1, 3, 5]) // 10
`````````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 1..<lst.count {
if i % 2 != 0 && lst[i] % 2 == 0 {
sum += lst[i]
}
}
return sum
}
add(lst: [4, 2, 6, 7]) // 2
add(lst: [1, 2, 3, 4, 5]) // 6
add(lst: [5, 3, 2, 4, 1]) // 0
add(lst: [1, 2, 3, 4, 5, 6]) // 8
add(lst: [6, 4, 2, 1, 3, 5]) // 10
```func add(lst: [Int]) -> Int {
var sum = 0
for i in 1..<lst.count {
if i % 2 != 0 && lst[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 1..<lst.count {
if i % 2 != 0 && lst[i] % 2 == 0 {
sum += lst[i]
}
}
return sum
}
add(lst: [4, 2, 6, 7]) // 2
add(lst: [1, 2, 3, 4, 5]) // 4
add(lst: [1, 1, 1, 1, 1, 1]) // 0
add(lst: [2, 3, 4, 5, 6, 7, 8]) // 14
add(lst: [10, 20, 30, 40, 50]) // 10
`````````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 1..<lst.count {
if i % 2 != 0 && lst[i] % 2 == 0 {
sum += lst[i]
}
}
return sum
}
add(lst: [4, 2, 6, 7]) // 2
add(lst: [1, 2, 3, 4, 5]) // 4
add(lst: [1, 1, 1, 1, 1, 1]) // 0
add(lst: [2, 3, 4, 5, 6, 7, 8]) // 14
add(lst: [10, 20, 30, 40, 50]) // 10
```func add(lst: [Int]) -> Int {
var sum = 0
for i in 1..<lst.count {
if i % 2 != 0 && lst[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 1..<lst.count {
if i % 2 != 0 && lst[i] % 2 == 0 {
sum += lst[i]
}
}
return sum
}
add(lst: [4, 2, 6, 7])
`````````python
def add(lst):
sum = 0
for i in range(1, len(lst)):
if i % 2 != 0 and lst[i] % 2 == 0:
sum += lst[i]
return sum
add([4, 2, 6, 7])
```func add(lst: [Int]) -> Int {
var sum = 0
for i in 1..<lst.count {
if i % 2 != 0 && lst[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 1..<lst.count {
if i % 2 != 0 && lst[i] % 2 == 0 {
sum += lst[i]
}
}
return sum
}
add(lst: [4, 2, 6, 7]) // 2
add(lst: [1, 2, 3, 4, 5]) // 6
add(lst: [5, 3, 2, 4, 1]) // 2
add(lst: [1, 1, 1, 1, 1]) // 0
add(lst: [2, 2, 2, 2, 2]) // 10
`````````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 1..<lst.count {
if i % 2 != 0 && lst[i] % 2 == 0 {
sum += lst[i]
}
}
return sum
}
add(lst: [4, 2, 6, 7]) // 2
add(lst: [1, 2, 3, 4, 5]) // 6
add(lst: [5, 3, 2, 4, 1]) // 2
add(lst: [1, 1, 1, 1, 1]) // 0
add(lst: [2, 2, 2, 2, 2]) // 10
```func add(lst: [Int]) -> Int {
var sum = 0
for i in 1..<lst.count {
if i % 2 != 0 && lst[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 1..<lst.count {
if i % 2 != 0 && lst[i] % 2 == 0 {
sum += lst[i]
}
}
return sum
}
add(lst: [4, 2, 6, 7])
`````````python
def add(lst):
sum = 0
for i in range(1, len(lst)):
if i % 2 != 0 and lst[i] % 2 == 0:
sum += lst[i]
return sum
add([4, 2, 6, 7])
```func add(lst: [Int]) -> Int {
var sum = 0
for i in 1..<lst.count {
if i % 2 != 0 && lst[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 1..<lst.count {
if i % 2 != 0 && lst[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 1..<lst.count {
if i % 2 != 0 && lst[i] % 2 == 0 {
sum += lst[i]
}
}
return sum
}
```func add(lst: [Int]) -> Int {
var sum = 0
for i in 1..<lst.count {
if i % 2 != 0 && lst[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 1..<lst.count {
if i % 2 != 0 && lst[i] % 2 == 0 {
sum += lst[i]
}
}
return sum
}
``````
```python
# 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
def add(lst):
sum = 0
for i in range(1, len(lst)):
if i % 2 != 0 and lst[i] % 2 == 0:
sum += lst[i]
return sum
```func antiShuffle(s: String) -> String {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedCharacters = word.lowercased().sorted { $0.asciiValue ?? 0 < $1.asciiValue ?? 0 }
let sortedWord = sortedCharacters.joined()
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}```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 {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedCharacters = word.lowercased().sorted { $0.asciiValue ?? 0 < $1.asciiValue ?? 0 }
let sortedWord = sortedCharacters.joined()
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}
// Test cases
print(antiShuffle(s: "Hi")) // "Hi"
print(antiShuffle(s: "hello")) // "ehllo"
print(antiShuffle(s: "Hello World!!!")) // "Hello !!!Wdlor"
`````````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 {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedCharacters = word.lowercased().sorted { $0.asciiValue ?? 0 < $1.asciiValue ?? 0 }
let sortedWord = sortedCharacters.joined()
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}
// Test cases
print(antiShuffle(s: "Hi")) // "Hi"
print(antiShuffle(s: "hello")) // "ehllo"
print(antiShuffle(s: "Hello World!!!")) // "Hello !!!Wdlor"
```let sortedWord = sortedCharacters.joined() // no exact matches in call to instance method 'joined'func antiShuffle(s: String) -> String {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedWord = String(word.lowercased().sorted())
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}```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 {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedWord = String(word.lowercased().sorted())
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}
// Test cases
print(antiShuffle(s: "Hi")) // "Hi"
print(antiShuffle(s: "hello")) // "ehllo"
print(antiShuffle(s: "Hello World!!!")) // "Hello !!!Wdlor"
`````` // XCTAssertTrue failedfunc antiShuffle(s: String) -> String {
return s.split(separator: " ").map { word in
return String(word.lowercased().sorted())
}.joined(separator: " ")
}```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 {
return s.split(separator: " ").map { word in
return String(word.lowercased().sorted())
}.joined(separator: " ")
}
// Test cases
print(antiShuffle(s: "Hi")) // "Hi"
print(antiShuffle(s: "hello")) // "ehllo"
print(antiShuffle(s: "Hello World!!!")) // "Hello !!!Wdlor"
`````````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 {
return s.split(separator: " ").map { word in
return String(word.lowercased().sorted())
}.joined(separator: " ")
}
// Test cases
print(antiShuffle(s: "Hi")) // "Hi"
print(antiShuffle(s: "hello")) // "ehllo"
print(antiShuffle(s: "Hello World!!!")) // "Hello !!!Wdlor"
``` // XCTAssertTrue failedfunc antiShuffle(s: String) -> String {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedWord = String(word.lowercased().sorted())
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}```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 {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedWord = String(word.lowercased().sorted())
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}
// Test cases
print(antiShuffle(s: "Hi")) // "Hi"
print(antiShuffle(s: "hello")) // "ehllo"
print(antiShuffle(s: "Hello World!!!")) // "Hello !!!Wdlor"
`````` // XCTAssertTrue failedfunc antiShuffle(s: String) -> String {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedCharacters = word.lowercased().sorted { $0.asciiValue ?? 0 < $1.asciiValue ?? 0 }
let sortedWord = sortedCharacters.joined()
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}```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 {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedCharacters = word.lowercased().sorted { $0.asciiValue ?? 0 < $1.asciiValue ?? 0 }
let sortedWord = sortedCharacters.joined()
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}
// Test cases
print(antiShuffle(s: "Hi")) // "Hi"
print(antiShuffle(s: "hello")) // "ehllo"
print(antiShuffle(s: "Hello World!!!")) // "Hello !!!Wdlor"
``````let sortedWord = sortedCharacters.joined() // no exact matches in call to instance method 'joined'func antiShuffle(s: String) -> String {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedWord = String(word.lowercased().sorted())
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}```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 {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedWord = String(word.lowercased().sorted())
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}
print(antiShuffle(s: "Hi"))
print(antiShuffle(s: "hello"))
print(antiShuffle(s: "Hello World!!!"))
`````````swift
func antiShuffle(s: String) -> String {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedWord = String(word.lowercased().sorted())
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}
print(antiShuffle(s: "Hi"))
print(antiShuffle(s: "hello"))
print(antiShuffle(s: "Hello World!!!"))
``` // XCTAssertTrue failedfunc antiShuffle(s: String) -> String {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedWord = String(word.lowercased().sorted())
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}```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 {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedWord = String(word.lowercased().sorted())
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}
// Test cases
print(antiShuffle(s: "Hi")) // "Hi"
print(antiShuffle(s: "hello")) // "ehllo"
print(antiShuffle(s: "Hello World!!!")) // "Hello !!!Wdlor"
`````` // XCTAssertTrue failedfunc antiShuffle(s: String) -> String {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedCharacters = word.lowercased().sorted { $0.asciiValue ?? 0 < $1.asciiValue ?? 0 }
let sortedWord = sortedCharacters.joined()
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}```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 {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedCharacters = word.lowercased().sorted { $0.asciiValue ?? 0 < $1.asciiValue ?? 0 }
let sortedWord = sortedCharacters.joined()
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}
// Test cases
print(antiShuffle(s: "Hi")) // "Hi"
print(antiShuffle(s: "hello")) // "ehllo"
print(antiShuffle(s: "Hello World!!!")) // "Hello !!!Wdlor"
``````let sortedWord = sortedCharacters.joined() // no exact matches in call to instance method 'joined'func antiShuffle(s: String) -> String {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedWord = String(word.lowercased().sorted())
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}```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 {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedWord = String(word.lowercased().sorted())
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}
// Test cases
print(antiShuffle(s: "Hi")) // "Hi"
print(antiShuffle(s: "hello")) // "ehllo"
print(antiShuffle(s: "Hello World!!!")) // "Hello !!!Wdlor"
`````` // XCTAssertTrue failedfunc antiShuffle(s: String) -> String {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedWord = String(word.lowercased().sorted())
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}```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 {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedWord = String(word.lowercased().sorted())
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}
print(antiShuffle(s: "Hi"))
print(antiShuffle(s: "hello"))
print(antiShuffle(s: "Hello World!!!"))
``````
```swift
func antiShuffle(s: String) -> String {
let words = s.components(separatedBy: " ")
var result = ""
for word in words {
let sortedWord = String(word.lowercased().sorted())
result += sortedWord + " "
}
return result.trimmingCharacters(in: .whitespacesAndNewlines)
}
print(antiShuffle(s: "Hi"))
print(antiShuffle(s: "hello"))
print(antiShuffle(s: "Hello World!!!"))
``` // XCTAssertTrue failedfunc getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
var coordinates = [(Int, Int)]()
for (i, row) in lst.enumerated() {
for (j, num) in row.enumerated() {
if num == x {
coordinates.append((i, j))
}
}
}
coordinates.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
return coordinates
}```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 coordinates = [(Int, Int)]()
for (i, row) in lst.enumerated() {
for (j, num) in row.enumerated() {
if num == x {
coordinates.append((i, j))
}
}
}
coordinates.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
return coordinates
}
``````
```swift
// Testing the getRow function
print(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)]
print(getRow(lst: [] as [[Int]], x: 1)) // [] as [(Int, Int)]
print(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, item) in row.enumerated() {
if item == x {
result.append((i, j))
}
}
}
result.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
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, row) in lst.enumerated() {
for (j, item) in row.enumerated() {
if item == x {
result.append((i, j))
}
}
}
result.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
return result
}
``````
```swift
// Testing the function getRow
print(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)]
print(getRow(lst: [] as [[Int]], x: 1)) // [] as [(Int, Int)]
print(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, item) in row.enumerated() {
if item == x {
result.append((i, j))
}
}
}
result.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
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, row) in lst.enumerated() {
for (j, item) in row.enumerated() {
if item == x {
result.append((i, j))
}
}
}
result.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
return result
}
``````
```swift
// Testing the function getRow
print(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)]
print(getRow(lst: [] as [[Int]], x: 1)) // [] as [(Int, Int)]
print(getRow(lst: [[] as [Int], [1], [1, 2, 3]], x: 3)) // [(2, 2)]
```func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
var coordinates = [(Int, Int)]()
for (i, row) in lst.enumerated() {
if let index = row.firstIndex(where: { $0 == x }) {
coordinates.append((i, index))
}
}
coordinates.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
return coordinates
}```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 coordinates = [(Int, Int)]()
for (i, row) in lst.enumerated() {
if let index = row.firstIndex(where: { $0 == x }) {
coordinates.append((i, index))
}
}
coordinates.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
return coordinates
}
`````````python
def getRow(lst, x):
coordinates = []
for i, row in enumerate(lst):
if x in row:
for j in range(len(row)):
if row[j] == x:
coordinates.append((i, j))
coordinates.sort(key=lambda tup: (tup[0], -tup[1]))
return coordinates
print(getRow([[1, 2, 3, 4, 5, 6], [1, 2, 3, 4, 1, 6], [1, 2, 3, 4, 5, 1]], 1))
print(getRow([], 1))
print(getRow([[], [1], [1, 2, 3]], 3))
``` // XCTAssertTrue failedfunc getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
var result = [(Int, Int)]()
for (i, row) in lst.enumerated() {
if let index = row.firstIndex(where: { $0 == x }) {
result.append((i, index))
}
}
result.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
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, row) in lst.enumerated() {
if let index = row.firstIndex(where: { $0 == x }) {
result.append((i, index))
}
}
result.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
return result
}
`````````python
def getRow(lst, x):
result = []
for i, row in enumerate(lst):
if x in row:
for j in range(len(row)):
if row[j] == x:
result.append((i, j))
result.sort(key=lambda tup: (tup[0], -tup[1]))
return result
print(getRow([[1, 2, 3, 4, 5, 6], [1, 2, 3, 4, 1, 6], [1, 2, 3, 4, 5, 1]], 1))
print(getRow([], 1))
print(getRow([[], [1], [1, 2, 3]], 3))
``` // XCTAssertTrue failedfunc getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
var result = [(Int, Int)]()
for (i, row) in lst.enumerated() {
for (j, item) in row.enumerated() {
if item == x {
result.append((i, j))
}
}
}
result.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
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, row) in lst.enumerated() {
for (j, item) in row.enumerated() {
if item == x {
result.append((i, j))
}
}
}
result.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
return result
}
``````
```swift
// Testing the function with given examples
print(getRow(lst: [[1, 2, 3, 4, 5, 6], [1, 2, 3, 4, 1, 6], [1, 2, 3, 4, 5, 1]], x: 1))
print(getRow(lst: [] as [[Int]], x: 1))
print(getRow(lst: [[] as [Int], [1], [1, 2, 3]], x: 3))
```func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
var result = [(Int, Int)]()
for (i, row) in lst.enumerated() {
if let index = row.firstIndex(where: { $0 == x }) {
result.append((i, index))
}
}
result.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
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, row) in lst.enumerated() {
if let index = row.firstIndex(where: { $0 == x }) {
result.append((i, index))
}
}
result.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
return result
}
`````````python
def getRow(lst, x):
result = []
for i, row in enumerate(lst):
if x in row:
for j in range(len(row)):
if row[j] == x:
result.append((i, j))
result.sort(key=lambda tup: (tup[0], -tup[1]))
return result
``` // XCTAssertTrue failedfunc getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
var coordinates = [(Int, Int)]()
for (rowIndex, row) in lst.enumerated() {
if let index = row.firstIndex(where: { $0 == x }) {
coordinates.append((rowIndex, index))
}
}
coordinates.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
return coordinates
}```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 coordinates = [(Int, Int)]()
for (rowIndex, row) in lst.enumerated() {
if let index = row.firstIndex(where: { $0 == x }) {
coordinates.append((rowIndex, index))
}
}
coordinates.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
return coordinates
}
``````
```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 coordinates = [(Int, Int)]()
for (rowIndex, row) in lst.enumerated() {
if let index = row.firstIndex(where: { $0 == x }) {
coordinates.append((rowIndex, index))
}
}
coordinates.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
return coordinates
}
``` // XCTAssertTrue failedfunc getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
var coordinates = [(Int, Int)]()
for (rowIndex, row) in lst.enumerated() {
for (columnIndex, element) in row.enumerated() {
if element == x {
coordinates.append((rowIndex, columnIndex))
}
}
}
coordinates.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
return coordinates
}```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 coordinates = [(Int, Int)]()
for (rowIndex, row) in lst.enumerated() {
for (columnIndex, element) in row.enumerated() {
if element == x {
coordinates.append((rowIndex, columnIndex))
}
}
}
coordinates.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
return coordinates
}
``````
```swift
func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
var coordinates = [(Int, Int)]()
for (rowIndex, row) in lst.enumerated() {
for (columnIndex, element) in row.enumerated() {
if element == x {
coordinates.append((rowIndex, columnIndex))
}
}
}
coordinates.sort { $0.0 < $1.0 || ($0.0 == $1.0 && $0.1 > $1.1) }
return coordinates
}
getRow(lst: [[1, 2, 3, 4, 5, 6], [1, 2, 3, 4, 1, 6], [1, 2, 3, 4, 5, 1]], x: 1)
```func getRow(lst: [[Int]], x: Int) -> [(Int, Int)] {
var coordinates = [(Int, Int)]()
for (rowIndex, row) in lst.enumerated() {
if let index = row.firstIndex(where: { $0 == x }) {
coordinates.append((rowIndex, index))
}
}
coordinates.sort {
if $0.0 == $1.0 {
return $1.1 < $0.1
}
return $0.0 < $1.0
}
return coordinates
}```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 coordinates = [(Int, Int)]()
for (rowIndex, row) in lst.enumerated() {
if let index = row.firstIndex(where: { $0 == x }) {
coordinates.append((rowIndex, index))
}
}
coordinates.sort {
if $0.0 == $1.0 {
return $1.1 < $0.1
}
return $0.0 < $1.0
}
return coordinates
}
``````
```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 coordinates = [(Int, Int)]()
for (rowIndex, row) in lst.enumerated() {
if let index = row.firstIndex(where: { $0 == x }) {
coordinates.append((rowIndex, index))
}
}
coordinates.sort {
if $0.0 == $1.0 {
return $1.1 < $0.1
}
return $0.0 < $1.0
}
return coordinates
}
``` // XCTAssertTrue failedfunc sortArray(array: [Int]) -> [Int] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : 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] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : sortedArray
}
``````
```swift
// Test cases
print(sortArray(array: [])) // []
print(sortArray(array: [5])) // [5]
print(sortArray(array: [2, 4, 3, 0, 1, 5])) // [0, 1, 2, 3, 4, 5]
print(sortArray(array: [2, 4, 3, 0, 1, 5, 6])) // [6, 5, 4, 3, 2, 1, 0]
```let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0 // cannot call value of non-function type 'Int?'let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0 // cannot call value of non-function type 'Int?'func sortArray(array: [Int]) -> [Int] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : 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] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : sortedArray
}
`````````swift
func sortArray(array: [Int]) -> [Int] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : sortedArray
}
// Test cases
print(sortArray(array: [])) // []
print(sortArray(array: [5])) // [5]
print(sortArray(array: [2, 4, 3, 0, 1, 5])) // [0, 1, 2, 3, 4, 5]
print(sortArray(array: [2, 4, 3, 0, 1, 5, 6])) // [6, 5, 4, 3, 2, 1, 0]
```let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0 // cannot call value of non-function type 'Int?'let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0 // cannot call value of non-function type 'Int?'func sortArray(array: [Int]) -> [Int] {
var sortedArray = array
let sum = sortedArray.first ?? 0 + sortedArray.last ?? 0
if sum % 2 == 0 {
sortedArray.sort(by: >)
} else {
sortedArray.sort(by: <)
}
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 sortedArray = array
let sum = sortedArray.first ?? 0 + sortedArray.last ?? 0
if sum % 2 == 0 {
sortedArray.sort(by: >)
} else {
sortedArray.sort(by: <)
}
return sortedArray
}
``````
```swift
// Test cases
print(sortArray(array: [])) // []
print(sortArray(array: [5])) // [5]
print(sortArray(array: [2, 4, 3, 0, 1, 5])) // [0, 1, 2, 3, 4, 5]
print(sortArray(array: [2, 4, 3, 0, 1, 5, 6])) // [6, 5, 4, 3, 2, 1, 0]
```let sum = sortedArray.first ?? 0 + sortedArray.last ?? 0 // value of optional type 'Int?' must be unwrapped to a value of type 'Int'func sortArray(array: [Int]) -> [Int] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : 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] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : 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] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : sortedArray
}
```let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0 // cannot call value of non-function type 'Int?'let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0 // cannot call value of non-function type 'Int?'func sortArray(array: [Int]) -> [Int] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : 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] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : sortedArray
}
``````
```swift
// Testing the function
print(sortArray(array: [])) // []
print(sortArray(array: [5])) // [5]
print(sortArray(array: [2, 4, 3, 0, 1, 5])) // [0, 1, 2, 3, 4, 5]
print(sortArray(array: [2, 4, 3, 0, 1, 5, 6])) // [6, 5, 4, 3, 2, 1, 0]
```let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0 // cannot call value of non-function type 'Int?'let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0 // cannot call value of non-function type 'Int?'func sortArray(array: [Int]) -> [Int] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : 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] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : 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] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : sortedArray
}
```let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0 // cannot call value of non-function type 'Int?'let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0 // cannot call value of non-function type 'Int?'func sortArray(array: [Int]) -> [Int] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : 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] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : sortedArray
}
`````````swift
func sortArray(array: [Int]) -> [Int] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : sortedArray
}
// Test cases
print(sortArray(array: [])) // []
print(sortArray(array: [5])) // [5]
print(sortArray(array: [2, 4, 3, 0, 1, 5])) // [0, 1, 2, 3, 4, 5]
print(sortArray(array: [2, 4, 3, 0, 1, 5, 6])) // [6, 5, 4, 3, 2, 1, 0]
```let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0 // cannot call value of non-function type 'Int?'let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0 // cannot call value of non-function type 'Int?'func sortArray(array: [Int]) -> [Int] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : 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] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : 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] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : sortedArray
}
```let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0 // cannot call value of non-function type 'Int?'let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0 // cannot call value of non-function type 'Int?'func sortArray(array: [Int]) -> [Int] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : 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] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : sortedArray
}
``````
```swift
func sortArray(array: [Int]) -> [Int] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : sortedArray
}
// Test cases
print(sortArray(array: [])) // []
print(sortArray(array: [5])) // [5]
print(sortArray(array: [2, 4, 3, 0, 1, 5])) // [0, 1, 2, 3, 4, 5]
print(sortArray(array: [2, 4, 3, 0, 1, 5, 6])) // [6, 5, 4, 3, 2, 1, 0]
```let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0 // cannot call value of non-function type 'Int?'let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0 // cannot call value of non-function type 'Int?'func sortArray(array: [Int]) -> [Int] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : 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] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : 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] {
guard array.count > 1 else { return array }
let sortedArray = array.sorted()
let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0
return sum % 2 == 0 ? sortedArray.reversed() : sortedArray
}
```let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0 // cannot call value of non-function type 'Int?'let sum = sortedArray.first() ?? 0 + sortedArray.last() ?? 0 // cannot call value of non-function type 'Int?'func encrypt(s: String) -> String {
let alphabet = "abcdefghijklmnopqrstuvwxyz"
let rotatedAlphabet = String(alphabet.dropFirst(2).dropLast(2).dropFirst(2).dropLast(2))
var encrypted = ""
for char in s {
if let index = alphabet.firstIndex(of: char.lowercased()) {
let rotatedIndex = (index + 2) % 26
encrypted.append(rotatedAlphabet[rotatedIndex])
} else {
encrypted.append(char)
}
}
return encrypted
}```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 {
let alphabet = "abcdefghijklmnopqrstuvwxyz"
let rotatedAlphabet = String(alphabet.dropFirst(2).dropLast(2).dropFirst(2).dropLast(2))
var encrypted = ""
for char in s {
if let index = alphabet.firstIndex(of: char.lowercased()) {
let rotatedIndex = (index + 2) % 26
encrypted.append(rotatedAlphabet[rotatedIndex])
} else {
encrypted.append(char)
}
}
return encrypted
}
// Test the function
print(encrypt(s: "hi")) // lm
print(encrypt(s: "asdfghjkl")) // ewhjklnop
print(encrypt(s: "gf")) // kj
print(encrypt(s: "et")) // ix
``````if let index = alphabet.firstIndex(of: char.lowercased()) { // cannot convert value of type 'String' to expected argument type 'String.Element' (aka 'Character')func encrypt(s: String) -> String {
let alphabet = "abcdefghijklmnopqrstuvwxyz"
let rotatedAlphabet = String(alphabet.dropFirst(2).dropLast(2)) + String(alphabet.prefix(2))
var encrypted = ""
for char in s {
if let index = alphabet.firstIndex(of: char.lowercased()) {
encrypted += String(rotatedAlphabet[index])
} else {
encrypted += char.description
}
}
return encrypted
}```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 {
let alphabet = "abcdefghijklmnopqrstuvwxyz"
let rotatedAlphabet = String(alphabet.dropFirst(2).dropLast(2)) + String(alphabet.prefix(2))
var encrypted = ""
for char in s {
if let index = alphabet.firstIndex(of: char.lowercased()) {
encrypted += String(rotatedAlphabet[index])
} else {
encrypted += char.description
}
}
return encrypted
}
print(encrypt(s: "hi"))
print(encrypt(s: "asdfghjkl"))
print(encrypt(s: "gf"))
print(encrypt(s: "et"))
```
```if let index = alphabet.firstIndex(of: char.lowercased()) { // cannot convert value of type 'String' to expected argument type 'String.Element' (aka 'Character')func encrypt(s: String) -> String {
let alphabet = "abcdefghijklmnopqrstuvwxyz"
let rotatedAlphabet = String(alphabet.dropFirst(2).dropLast(2).dropFirst(2).dropLast(2))
var encrypted = ""
for char in s {
if let index = alphabet.firstIndex(of: char) {
let rotatedIndex = (index + 2) % 26
encrypted.append(rotatedAlphabet[rotatedIndex])
} else {
encrypted.append(char)
}
}
return encrypted
}```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 {
let alphabet = "abcdefghijklmnopqrstuvwxyz"
let rotatedAlphabet = String(alphabet.dropFirst(2).dropLast(2).dropFirst(2).dropLast(2))
var encrypted = ""
for char in s {
if let index = alphabet.firstIndex(of: char) {
let rotatedIndex = (index + 2) % 26
encrypted.append(rotatedAlphabet[rotatedIndex])
} else {
encrypted.append(char)
}
}
return encrypted
}
// Test the function
print(encrypt(s: "hi")) // lm
print(encrypt(s: "asdfghjkl")) // ewhjklnop
print(encrypt(s: "gf")) // kj
print(encrypt(s: "et")) // ix
``````let rotatedIndex = (index + 2) % 26 // cannot convert value of type 'String.Index' to expected argument type 'Int'func encrypt(s: String) -> String {
let alphabet = "abcdefghijklmnopqrstuvwxyz"
var encrypted = ""
for char in s {
let index = alphabet.index(alphabet.startIndex, offsetBy: 2 * (alphabet.index(char) ?? 0))
encrypted.append(alphabet[index])
}
return encrypted
}
func decrypt(s: String) -> String {
let alphabet = "abcdefghijklmnopqrstuvwxyz"
var decrypted = ""
for char in s {
let index = alphabet.index(alphabet.startIndex, offsetBy: (alphabet.index(char) ?? 0) / 2)
decrypted.append(alphabet[index])
}
return decrypted
}```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 {
let alphabet = "abcdefghijklmnopqrstuvwxyz"
var encrypted = ""
for char in s {
let index = alphabet.index(alphabet.startIndex, offsetBy: 2 * (alphabet.index(char) ?? 0))
encrypted.append(alphabet[index])
}
return encrypted
}
// 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 down 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 {
let alphabet = "abcdefghijklmnopqrstuvwxyz"
var decrypted = ""
for char in s {
let index = alphabet.index(alphabet.startIndex, offsetBy: (alphabet.index(char) ?? 0) / 2)
decrypted.append(alphabet[index])
}
return decrypted
}
// Test the functions
print(encrypt(s: "hi")) // "lm"
print(encrypt(s: "asdfghjkl")) // "ewhjklnop"
print(encrypt(s: "gf")) // "kj"
print(encrypt(s: "et")) // "ix"
print(decrypt(s: "lm")) // "hi"
print(decrypt(s: "ewhjklnop")) // "asdfghjkl"
print(decrypt(s: "kj")) // "gf"
print(decrypt(s: "ix")) // "et"
``````let index = alphabet.index(alphabet.startIndex, offsetBy: 2 * (alphabet.index(char) ?? 0)) // missing argument label 'of:' in calllet index = alphabet.index(alphabet.startIndex, offsetBy: 2 * (alphabet.index(char) ?? 0)) // binary operator '??' cannot be applied to operands of type 'String.Index?' and 'Int'let index = alphabet.index(alphabet.startIndex, offsetBy: 2 * (alphabet.index(char) ?? 0)) // binary operator '*' cannot be applied to operands of type 'Int' and 'String.Index'let index = alphabet.index(alphabet.startIndex, offsetBy: (alphabet.index(char) ?? 0) / 2) // binary operator '/' cannot be applied to operands of type 'String.Index' and 'Int'let index = alphabet.index(alphabet.startIndex, offsetBy: (alphabet.index(char) ?? 0) / 2) // missing argument label 'of:' in calllet index = alphabet.index(alphabet.startIndex, offsetBy: (alphabet.index(char) ?? 0) / 2) // binary operator '??' cannot be applied to operands of type 'String.Index?' and 'Int'func encrypt(s: String) -> String {
let alphabet: [Character] = Array("abcdefghijklmnopqrstuvwxyz")
var encrypted = ""
for char in s {
if let index = alphabet.firstIndex(where: { $0 == char }) {
let encryptedIndex = (index + 2 * 2) % alphabet.count
encrypted.append(alphabet[encryptedIndex])
} else {
encrypted.append(char)
}
}
return encrypted
}```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 {
let alphabet: [Character] = Array("abcdefghijklmnopqrstuvwxyz")
var encrypted = ""
for char in s {
if let index = alphabet.firstIndex(where: { $0 == char }) {
let encryptedIndex = (index + 2 * 2) % alphabet.count
encrypted.append(alphabet[encryptedIndex])
} else {
encrypted.append(char)
}
}
return encrypted
}
// Test the function
print(encrypt(s: "hi")) // "lm"
print(encrypt(s: "asdfghjkl")) // "ewhjklnop"
print(encrypt(s: "gf")) // "kj"
print(encrypt(s: "et")) // "ix"
``````func encrypt(s: String) -> String {
let alphabet: [Character] = Array("abcdefghijklmnopqrstuvwxyz")
var encrypted = ""
for char in s {
if let index = alphabet.firstIndex(where: { $0 == char }) {
let newIndex = (index + 2) % alphabet.count
encrypted.append(alphabet[newIndex])
} else {
encrypted.append(char)
}
}
return encrypted
}```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 {
let alphabet: [Character] = Array("abcdefghijklmnopqrstuvwxyz")
var encrypted = ""
for char in s {
if let index = alphabet.firstIndex(where: { $0 == char }) {
let newIndex = (index + 2) % alphabet.count
encrypted.append(alphabet[newIndex])
} else {
encrypted.append(char)
}
}
return encrypted
}
// Test the function
print(encrypt(s: "hi")) // lm
print(encrypt(s: "asdfghjkl")) // ewhjklnop
print(encrypt(s: "gf")) // kj
print(encrypt(s: "et")) // ix
`````` // XCTAssertTrue failedfunc encrypt(s: String) -> String {
let alphabet: [Character] = Array("abcdefghijklmnopqrstuvwxyz")
let encrypted: [Character] = s.map { char in
let index = alphabet.firstIndex(of: char)!
let encryptedIndex = (index + 2 * 2) % alphabet.count
return alphabet[encryptedIndex]
}
return String(encrypted)
}```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 {
let alphabet: [Character] = Array("abcdefghijklmnopqrstuvwxyz")
let encrypted: [Character] = s.map { char in
let index = alphabet.firstIndex(of: char)!
let encryptedIndex = (index + 2 * 2) % alphabet.count
return alphabet[encryptedIndex]
}
return String(encrypted)
}
// Test the function
print(encrypt(s: "hi")) // "lm"
print(encrypt(s: "asdfghjkl")) // "ewhjklnop"
print(encrypt(s: "gf")) // "kj"
print(encrypt(s: "et")) // "ix"
``````func encrypt(s: String) -> String {
let alphabet = "abcdefghijklmnopqrstuvwxyz"
let rotatedAlphabet = String(alphabet.dropFirst(2).dropLast(2).suffix(2).map { $0 } + alphabet.prefix(2).suffix(alphabet.count - 2))
var encrypted = ""
for char in s {
if let index = alphabet.firstIndex(of: char.lowercased()) {
encrypted.append(rotatedAlphabet[index])
} else {
encrypted.append(char)
}
}
return encrypted
}```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 {
let alphabet = "abcdefghijklmnopqrstuvwxyz"
let rotatedAlphabet = String(alphabet.dropFirst(2).dropLast(2).suffix(2).map { $0 } + alphabet.prefix(2).suffix(alphabet.count - 2))
var encrypted = ""
for char in s {
if let index = alphabet.firstIndex(of: char.lowercased()) {
encrypted.append(rotatedAlphabet[index])
} else {
encrypted.append(char)
}
}
return encrypted
}
// Test the function
print(encrypt(s: "hi")) // lm
print(encrypt(s: "asdfghjkl")) // ewhjklnop
print(encrypt(s: "gf")) // kj
print(encrypt(s: "et")) // ix
``````if let index = alphabet.firstIndex(of: char.lowercased()) { // cannot convert value of type 'String' to expected argument type 'String.Element' (aka 'Character')func encrypt(s: String) -> String {
let alphabet = "abcdefghijklmnopqrstuvwxyz"
var encrypted = ""
for char in s {
let index = alphabet.index(alphabet.startIndex, offsetBy: char.asciiValue!)
let encryptedIndex = (index + 2*2) % alphabet.count
encrypted.append(alphabet[encryptedIndex])
}
return encrypted
}```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 {
let alphabet = "abcdefghijklmnopqrstuvwxyz"
var encrypted = ""
for char in s {
let index = alphabet.index(alphabet.startIndex, offsetBy: char.asciiValue!)
let encryptedIndex = (index + 2*2) % alphabet.count
encrypted.append(alphabet[encryptedIndex])
}
return encrypted
}
print(encrypt(s: "hi"))
print(encrypt(s: "asdfghjkl"))
print(encrypt(s: "gf"))
print(encrypt(s: "et"))
```
```let index = alphabet.index(alphabet.startIndex, offsetBy: char.asciiValue!) // 'index(_:offsetBy:)' is unavailable: all index distances are now of type Intlet encryptedIndex = (index + 2*2) % alphabet.count // cannot convert value of type 'String.Index' to expected argument type 'Int'func encrypt(s: String) -> String {
let alphabet = "abcdefghijklmnopqrstuvwxyz"
let rotatedAlphabet = String(alphabet.dropFirst(2).dropLast(2).suffix(2).map { $0 } + alphabet.prefix(2).suffix(alphabet.count - 2))
let encrypted = s.map { char in
let index = alphabet.firstIndex(of: String(char))
if let encryptedChar = rotatedAlphabet[index] {
return encryptedChar
} else {
return char
}
}
return String(encrypted)
}```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 {
let alphabet = "abcdefghijklmnopqrstuvwxyz"
let rotatedAlphabet = String(alphabet.dropFirst(2).dropLast(2).suffix(2).map { $0 } + alphabet.prefix(2).suffix(alphabet.count - 2))
let encrypted = s.map { char in
let index = alphabet.firstIndex(of: String(char))
if let encryptedChar = rotatedAlphabet[index] {
return encryptedChar
} else {
return char
}
}
return String(encrypted)
}
// Test the function
print(encrypt(s: "hi")) // lm
print(encrypt(s: "asdfghjkl")) // ewhjklnop
print(encrypt(s: "gf")) // kj
print(encrypt(s: "et")) // ix
``````let index = alphabet.firstIndex(of: String(char)) // cannot convert value of type 'String' to expected argument type 'String.Element' (aka 'Character')func nextSmallest(lst: [Int]) -> Int? {
var sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[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 sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[1]
}
`````````swift
// Test cases
print(nextSmallest(lst: [1, 2, 3, 4, 5])) // 2
print(nextSmallest(lst: [5, 1, 4, 3, 2])) // 2
print(nextSmallest(lst: [] as [Int])) // nil
print(nextSmallest(lst: [1, 1])) // nil
```var sortedLst = lst.sorted() // variable 'sortedLst' was never mutated; consider changing to 'let' constant // XCTAssertTrue failedfunc nextSmallest(lst: [Int]) -> Int? {
var sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[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 sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[1]
}
`````````swift
func nextSmallest(lst: [Int]) -> Int? {
var sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[1]
}
// Test cases
print(nextSmallest(lst: [1, 2, 3, 4, 5])) // Output: 2
print(nextSmallest(lst: [5, 1, 4, 3, 2])) // Output: 2
print(nextSmallest(lst: [])) // Output: nil
print(nextSmallest(lst: [1, 1])) // Output: nil
```var sortedLst = lst.sorted() // variable 'sortedLst' was never mutated; consider changing to 'let' constant // XCTAssertTrue failedfunc nextSmallest(lst: [Int]) -> Int? {
var sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[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 sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[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 sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[1]
}
// Test cases
print(nextSmallest(lst: [1, 2, 3, 4, 5])) // 2
print(nextSmallest(lst: [5, 1, 4, 3, 2])) // 2
print(nextSmallest(lst: [] as [Int])) // nil
print(nextSmallest(lst: [1, 1])) // nil
```var sortedLst = lst.sorted() // variable 'sortedLst' was never mutated; consider changing to 'let' constant // XCTAssertTrue failedfunc nextSmallest(lst: [Int]) -> Int? {
var sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[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 sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[1]
}
`````````swift
// Testing the nextSmallest() function
// Test Case 1
let lst1 = [1, 2, 3, 4, 5]
print(nextSmallest(lst: lst1)) // Output: 2
// Test Case 2
let lst2 = [5, 1, 4, 3, 2]
print(nextSmallest(lst: lst2)) // Output: 2
// Test Case 3
let lst3: [Int] = []
print(nextSmallest(lst: lst3)) // Output: nil
// Test Case 4
let lst4 = [1, 1]
print(nextSmallest(lst: lst4)) // Output: nil
```var sortedLst = lst.sorted() // variable 'sortedLst' was never mutated; consider changing to 'let' constant // XCTAssertTrue failedfunc nextSmallest(lst: [Int]) -> Int? {
var sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[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 sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[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 sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[1]
}
```var sortedLst = lst.sorted() // variable 'sortedLst' was never mutated; consider changing to 'let' constant // XCTAssertTrue failedfunc nextSmallest(lst: [Int]) -> Int? {
var sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[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 sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[1]
}
`````````swift
func nextSmallest(lst: [Int]) -> Int? {
var sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[1]
}
print(nextSmallest(lst: [1, 2, 3, 4, 5])) // 2
print(nextSmallest(lst: [5, 1, 4, 3, 2])) // 2
print(nextSmallest(lst: [] as [Int])) // nil
print(nextSmallest(lst: [1, 1])) // nil
```var sortedLst = lst.sorted() // variable 'sortedLst' was never mutated; consider changing to 'let' constant // XCTAssertTrue failedfunc nextSmallest(lst: [Int]) -> Int? {
guard lst.count >= 2 else { return nil }
var smallest = Int.max
var secondSmallest = Int.max
for num in lst {
if num < smallest {
secondSmallest = smallest
smallest = num
} else if num < secondSmallest && num != smallest {
secondSmallest = num
}
}
return secondSmallest == Int.max ? nil : secondSmallest
}```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? {
guard lst.count >= 2 else { return nil }
var smallest = Int.max
var secondSmallest = Int.max
for num in lst {
if num < smallest {
secondSmallest = smallest
smallest = num
} else if num < secondSmallest && num != smallest {
secondSmallest = num
}
}
return secondSmallest == Int.max ? nil : secondSmallest
}
`````````swift
// Test cases
print(nextSmallest(lst: [1, 2, 3, 4, 5])) // 2
print(nextSmallest(lst: [5, 1, 4, 3, 2])) // 2
print(nextSmallest(lst: [] as [Int])) // nil
print(nextSmallest(lst: [1, 1])) // nil
```func nextSmallest(lst: [Int]) -> Int? {
var sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[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 sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[1]
}
`````````python
# You are given an array of integers.
# Write a function next_smallest() that returns the 2nd smallest element of the array.
# Return None if there is no such element.
# nextSmallest([1, 2, 3, 4, 5]) == 2
# nextSmallest([5, 1, 4, 3, 2]) == 2
# nextSmallest([]) == None
# nextSmallest([1, 1]) == None
def nextSmallest(lst):
sorted_lst = sorted(lst)
if len(sorted_lst) < 2:
return None
return sorted_lst[1]
```var sortedLst = lst.sorted() // variable 'sortedLst' was never mutated; consider changing to 'let' constant // XCTAssertTrue failedfunc nextSmallest(lst: [Int]) -> Int? {
var sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[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 sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[1]
}
`````````swift
// Testing the nextSmallest() function
// Test case 1
let lst1 = [1, 2, 3, 4, 5]
print(nextSmallest(lst: lst1)) // Output: 2
// Test case 2
let lst2 = [5, 1, 4, 3, 2]
print(nextSmallest(lst: lst2)) // Output: 2
// Test case 3
let lst3: [Int] = []
print(nextSmallest(lst: lst3)) // Output: nil
// Test case 4
let lst4 = [1, 1]
print(nextSmallest(lst: lst4)) // Output: nil
```var sortedLst = lst.sorted() // variable 'sortedLst' was never mutated; consider changing to 'let' constant // XCTAssertTrue failedfunc nextSmallest(lst: [Int]) -> Int? {
var sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[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 sortedLst = lst.sorted()
if sortedLst.count < 2 {
return nil
}
return sortedLst[1]
}
``````
```swift
// Testing the nextSmallest function
// Test case 1
let lst1 = [1, 2, 3, 4, 5]
print(nextSmallest(lst: lst1)) // Output: 2
// Test case 2
let lst2 = [5, 1, 4, 3, 2]
print(nextSmallest(lst: lst2)) // Output: 2
// Test case 3
let lst3: [Int] = []
print(nextSmallest(lst: lst3)) // Output: nil
// Test case 4
let lst4 = [1, 1]
print(nextSmallest(lst: lst4)) // Output: nil
```var sortedLst = lst.sorted() // variable 'sortedLst' was never mutated; consider changing to 'let' constant // XCTAssertTrue failedfunc isBored(S: String) -> Int {
let sentences = S.components(separatedBy: ".?!")
var count = 0
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 {
let sentences = S.components(separatedBy: ".?!")
var count = 0
for sentence in sentences {
if sentence.hasPrefix("I") {
count += 1
}
}
return count
}
``````python
# 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
def isBored(S: str) -> int:
sentences = S.split(".?!")
count = 0
for sentence in sentences:
if sentence.startswith("I"):
count += 1
return count
``` // XCTAssertTrue failedfunc isBored(S: String) -> Int {
let sentences = S.components(separatedBy: ".?!")
var count = 0
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 {
let sentences = S.components(separatedBy: ".?!")
var count = 0
for sentence in sentences {
if sentence.hasPrefix("I") {
count += 1
}
}
return count
}
``````python
def isBored(S):
sentences = S.split('.?!')
count = 0
for sentence in sentences:
if sentence.startswith('I'):
count += 1
return count
print(isBored('Hello world')) # 0
print(isBored('The sky is blue. The sun is shining. I love this weather')) # 1
``` // XCTAssertTrue failedfunc isBored(S: String) -> Int {
let sentences = S.components(separatedBy: ".?!")
var boredomCount = 0
for sentence in sentences {
if sentence.hasPrefix("I") {
boredomCount += 1
}
}
return boredomCount
}```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 boredomCount = 0
for sentence in sentences {
if sentence.hasPrefix("I") {
boredomCount += 1
}
}
return boredomCount
}
``````
```python
# 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:
# is_bored("Hello world") == 0
# is_bored("The sky is blue. The sun is shining. I love this weather") == 1
def is_bored(s):
sentences = s.split('.?!')
boredom_count = 0
for sentence in sentences:
if sentence.startswith('I'):
boredom_count += 1
return boredom_count
``` // XCTAssertTrue failedfunc isBored(S: String) -> Int {
let sentences = S.components(separatedBy: ".?!")
var count = 0
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 {
let sentences = S.components(separatedBy: ".?!")
var count = 0
for sentence in sentences {
if sentence.hasPrefix("I") {
count += 1
}
}
return count
}
``````python
# 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("Hello world") == 0
# isBored("The sky is blue. The sun is shining. I love this weather") == 1
def isBored(S):
sentences = S.split(".?!")
count = 0
for sentence in sentences:
if sentence.startswith("I"):
count += 1
return count
``` // XCTAssertTrue failedfunc isBored(S: String) -> Int {
let sentences = S.components(separatedBy: ".?!")
var boredomCount = 0
for sentence in sentences {
if sentence.hasPrefix("I") {
boredomCount += 1
}
}
return boredomCount
}```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 boredomCount = 0
for sentence in sentences {
if sentence.hasPrefix("I") {
boredomCount += 1
}
}
return boredomCount
}
``````
```swift
// Testing the function
print(isBored(S: "Hello world")) // 0
print(isBored(S: "The sky is blue. The sun is shining. I love this weather")) // 1
print(isBored(S: "I am bored. I wish I was bored. I wish I was not bored.")) // 3
``` // XCTAssertTrue failedfunc isBored(S: String) -> Int {
let sentences = S.components(separatedBy: ".?!")
var count = 0
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 {
let sentences = S.components(separatedBy: ".?!")
var count = 0
for sentence in sentences {
if sentence.hasPrefix("I") {
count += 1
}
}
return count
}
``````python
# 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
def isBored(S: str) -> int:
sentences = S.split(".?!")
count = 0
for sentence in sentences:
if sentence.startswith("I"):
count += 1
return count
``` // XCTAssertTrue failedfunc isBored(S: String) -> Int {
let sentences = S.components(separatedBy: ".?!")
var count = 0
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 {
let sentences = S.components(separatedBy: ".?!")
var count = 0
for sentence in sentences {
if sentence.hasPrefix("I") {
count += 1
}
}
return count
}
``````
```swift
// Testing the function
print(isBored(S: "Hello world")) // 0
print(isBored(S: "The sky is blue. The sun is shining. I love this weather")) // 1
print(isBored(S: "I am bored. I wish I was bored. I wish I was not bored!")) // 3
``` // XCTAssertTrue failedfunc isBored(S: String) -> Int {
let sentences = S.components(separatedBy: ".?!")
var count = 0
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 {
let sentences = S.components(separatedBy: ".?!")
var count = 0
for sentence in sentences {
if sentence.hasPrefix("I") {
count += 1
}
}
return count
}
// Test cases
print(isBored(S: "Hello world")) // 0
print(isBored(S: "The sky is blue. The sun is shining. I love this weather")) // 1
print(isBored(S: "I am bored. I don't like this. I want to play")) // 2
print(isBored(S: "This is boring. I am bored. I am so bored. I am not happy")) // 3
`````````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.hasPrefix("I") {
count += 1
}
}
return count
}
// Test cases
print(isBored(S: "Hello world")) // 0
print(isBored(S: "The sky is blue. The sun is shining. I love this weather")) // 1
print(isBored(S: "I am bored. I don't like this. I want to play")) // 2
print(isBored(S: "This is boring. I am bored. I am so bored. I am not happy")) // 3
``` // XCTAssertTrue failedfunc isBored(S: String) -> Int {
let sentences = S.components(separatedBy: ".?!")
var count = 0
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 {
let sentences = S.components(separatedBy: ".?!")
var count = 0
for sentence in sentences {
if sentence.hasPrefix("I") {
count += 1
}
}
return count
}
``````python
def isBored(S):
sentences = S.split('.?!')
count = 0
for sentence in sentences:
if sentence.startswith('I'):
count += 1
return count
print(isBored("Hello world")) # 0
print(isBored("The sky is blue. The sun is shining. I love this weather")) # 1
``` // XCTAssertTrue failedfunc isBored(S: String) -> Int {
let sentences = S.components(separatedBy: ".?!")
var count = 0
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 {
let sentences = S.components(separatedBy: ".?!")
var count = 0
for sentence in sentences {
if sentence.hasPrefix("I") {
count += 1
}
}
return count
}
``````
```swift
// Test cases
print(isBored(S: "Hello world")) // 0
print(isBored(S: "The sky is blue. The sun is shining. I love this weather")) // 1
print(isBored(S: "I am bored. I wish I was bored.")) // 2
print(isBored(S: "This is a boring sentence. I wish I was bored. This is another boring sentence.")) // 2
print(isBored(S: "I am not bored. I am not bored. I am not bored.")) // 3
``` // XCTAssertTrue failedfunc anyInt(x: Double, y: Double, z: Double) -> Bool {
let intX = x.isInteger
let intY = y.isInteger
let intZ = z.isInteger
if intX && intY && intZ {
if x == y + z {
return true
} else {
return false
}
} 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 {
let intX = x.isInteger
let intY = y.isInteger
let intZ = z.isInteger
if intX && intY && intZ {
if x == y + z {
return true
} else {
return false
}
} else {
return false
}
}
// Test cases
print(anyInt(x: 5, y: 2, z: 7)) // true
print(anyInt(x: 3, y: 2, z: 2)) // false
print(anyInt(x: 3, y: -2, z: 1)) // true
print(anyInt(x: 3.6, y: -2.2, z: 2)) // 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 {
let intX = x.isInteger
let intY = y.isInteger
let intZ = z.isInteger
if intX && intY && intZ {
if x == y + z {
return true
} else {
return false
}
} else {
return false
}
}
// Test cases
print(anyInt(x: 5, y: 2, z: 7)) // true
print(anyInt(x: 3, y: 2, z: 2)) // false
print(anyInt(x: 3, y: -2, z: 1)) // true
print(anyInt(x: 3.6, y: -2.2, z: 2)) // false
```let intX = x.isInteger // value of type 'Double' has no member 'isInteger'let intY = y.isInteger // value of type 'Double' has no member 'isInteger'let intZ = z.isInteger // value of type 'Double' has no member 'isInteger'func anyInt(x: Double, y: Double, z: Double) -> Bool {
let intX = x.isInteger
let intY = y.isInteger
let intZ = z.isInteger
return (intX && intY && intZ) && (x == y + 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 {
let intX = x.isInteger
let intY = y.isInteger
let intZ = z.isInteger
return (intX && intY && intZ) && (x == y + z)
}
`````````swift
// Test the function with the provided examples
print(anyInt(x: 5, y: 2, z: 7)) // true
print(anyInt(x: 3, y: 2, z: 2)) // false
print(anyInt(x: 3, y: -2, z: 1)) // true
print(anyInt(x: 3.6, y: -2.2, z: 2)) // false
```let intX = x.isInteger // value of type 'Double' has no member 'isInteger'let intY = y.isInteger // value of type 'Double' has no member 'isInteger'let intZ = z.isInteger // value of type 'Double' has no member 'isInteger'func anyInt(x: Double, y: Double, z: Double) -> Bool {
if x == y + z && x.isInteger && y.isInteger && z.isInteger {
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.isInteger && y.isInteger && z.isInteger {
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.isInteger && y.isInteger && z.isInteger {
return true
} else {
return false
}
}
```if x == y + z && x.isInteger && y.isInteger && z.isInteger { // value of type 'Double' has no member 'isInteger'if x == y + z && x.isInteger && y.isInteger && z.isInteger { // value of type 'Double' has no member 'isInteger'if x == y + z && x.isInteger && y.isInteger && z.isInteger { // value of type 'Double' has no member 'isInteger'func anyInt(x: Double, y: Double, z: Double) -> Bool {
if x.isInteger && y.isInteger && z.isInteger {
return x + y == z || x + z == y || y + z == x
}
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.isInteger && y.isInteger && z.isInteger {
return x + y == z || x + z == y || y + z == x
}
return false
}
// Testing
print(anyInt(x: 5, y: 2, z: 7)) // true
print(anyInt(x: 3, y: 2, z: 2)) // false
print(anyInt(x: 3, y: -2, z: 1)) // true
print(anyInt(x: 3.6, y: -2.2, z: 2)) // 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.isInteger && y.isInteger && z.isInteger {
return x + y == z || x + z == y || y + z == x
}
return false
}
// Testing
print(anyInt(x: 5, y: 2, z: 7)) // true
print(anyInt(x: 3, y: 2, z: 2)) // false
print(anyInt(x: 3, y: -2, z: 1)) // true
print(anyInt(x: 3.6, y: -2.2, z: 2)) // false
```if x.isInteger && y.isInteger && z.isInteger { // value of type 'Double' has no member 'isInteger'if x.isInteger && y.isInteger && z.isInteger { // value of type 'Double' has no member 'isInteger'if x.isInteger && y.isInteger && z.isInteger { // value of type 'Double' has no member 'isInteger'func anyInt(x: Double, y: Double, z: Double) -> Bool {
if x == y + z && x.isInteger && y.isInteger && z.isInteger {
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.isInteger && y.isInteger && z.isInteger {
return true
} else {
return false
}
}
`````````swift
func anyInt(x: Double, y: Double, z: Double) -> Bool {
if x == y + z && x.isInteger && y.isInteger && z.isInteger {
return true
} else {
return false
}
}
// Test cases
print(anyInt(x: 5, y: 2, z: 7)) // true
print(anyInt(x: 3, y: 2, z: 2)) // false
print(anyInt(x: 3, y: -2, z: 1)) // true
print(anyInt(x: 3.6, y: -2.2, z: 2)) // false
```if x == y + z && x.isInteger && y.isInteger && z.isInteger { // value of type 'Double' has no member 'isInteger'if x == y + z && x.isInteger && y.isInteger && z.isInteger { // value of type 'Double' has no member 'isInteger'if x == y + z && x.isInteger && y.isInteger && z.isInteger { // value of type 'Double' has no member 'isInteger'func anyInt(x: Double, y: Double, z: Double) -> Bool {
let intX = x.isInteger
let intY = y.isInteger
let intZ = z.isInteger
if intX && intY && intZ {
if x == y + z || y == x + z || z == x + y {
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 {
let intX = x.isInteger
let intY = y.isInteger
let intZ = z.isInteger
if intX && intY && intZ {
if x == y + z || y == x + z || z == x + y {
return true
}
}
return false
}
// Testing the function
print(anyInt(x: 5, y: 2, z: 7)) // true
print(anyInt(x: 3, y: 2, z: 2)) // false
print(anyInt(x: 3, y: -2, z: 1)) // true
print(anyInt(x: 3.6, y: -2.2, z: 2)) // false
``````let intX = x.isInteger // value of type 'Double' has no member 'isInteger'let intY = y.isInteger // value of type 'Double' has no member 'isInteger'let intZ = z.isInteger // value of type 'Double' has no member 'isInteger'func anyInt(x: Double, y: Double, z: Double) -> Bool {
if x.isInteger && y.isInteger && z.isInteger {
if x + y == z || x + z == y || y + z == 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.isInteger && y.isInteger && z.isInteger {
if x + y == z || x + z == y || y + z == 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.isInteger && y.isInteger && z.isInteger {
if x + y == z || x + z == y || y + z == x {
return true
}
}
return false
}
// Test cases
print(anyInt(x: 5, y: 2, z: 7)) // true
print(anyInt(x: 3, y: 2, z: 2)) // false
print(anyInt(x: 3, y: -2, z: 1)) // true
print(anyInt(x: 3.6, y: -2.2, z: 2)) // false
```if x.isInteger && y.isInteger && z.isInteger { // value of type 'Double' has no member 'isInteger'if x.isInteger && y.isInteger && z.isInteger { // value of type 'Double' has no member 'isInteger'if x.isInteger && y.isInteger && z.isInteger { // value of type 'Double' has no member 'isInteger'func anyInt(x: Double, y: Double, z: Double) -> Bool {
if x.isInteger && y.isInteger && z.isInteger {
return x + y == z || x + z == y || y + z == x
}
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.isInteger && y.isInteger && z.isInteger {
return x + y == z || x + z == y || y + z == x
}
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.isInteger && y.isInteger && z.isInteger {
return x + y == z || x + z == y || y + z == x
}
return false
}
// Test cases
print(anyInt(x: 5, y: 2, z: 7)) // true
print(anyInt(x: 3, y: 2, z: 2)) // false
print(anyInt(x: 3, y: -2, z: 1)) // true
print(anyInt(x: 3.6, y: -2.2, z: 2)) // false
```if x.isInteger && y.isInteger && z.isInteger { // value of type 'Double' has no member 'isInteger'if x.isInteger && y.isInteger && z.isInteger { // value of type 'Double' has no member 'isInteger'if x.isInteger && y.isInteger && z.isInteger { // value of type 'Double' has no member 'isInteger'func anyInt(x: Double, y: Double, z: Double) -> Bool {
let intX = Int(x)
let intY = Int(y)
let intZ = Int(z)
return intX != nil && intY != nil && intZ != nil && (intX == intY + intZ || intY == intX + intZ || intZ == intX + intY)
}```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 {
let intX = Int(x)
let intY = Int(y)
let intZ = Int(z)
return intX != nil && intY != nil && intZ != nil && (intX == intY + intZ || intY == intX + intZ || intZ == intX + intY)
}
`````````swift
func anyInt(x: Double, y: Double, z: Double) -> Bool {
let intX = Int(x)
let intY = Int(y)
let intZ = Int(z)
return intX != nil && intY != nil && intZ != nil && (intX == intY + intZ || intY == intX + intZ || intZ == intX + intY)
}
// Test cases
print(anyInt(x: 5, y: 2, z: 7)) // true
print(anyInt(x: 3, y: 2, z: 2)) // false
print(anyInt(x: 3, y: -2, z: 1)) // true
print(anyInt(x: 3.6, y: -2.2, z: 2)) // false
```return intX != nil && intY != nil && intZ != nil && (intX == intY + intZ || intY == intX + intZ || intZ == intX + intY) // comparing non-optional value of type 'Int' to 'nil' always returns truereturn intX != nil && intY != nil && intZ != nil && (intX == intY + intZ || intY == intX + intZ || intZ == intX + intY) // comparing non-optional value of type 'Int' to 'nil' always returns truereturn intX != nil && intY != nil && intZ != nil && (intX == intY + intZ || intY == intX + intZ || intZ == intX + intY) // comparing non-optional value of type 'Int' to 'nil' always returns truefunc anyInt(x: Double, y: Double, z: Double) -> Bool {
let intX = Int(x)
let intY = Int(y)
let intZ = Int(z)
return intX != nil && intY != nil && intZ != nil && (intX == intY + intZ || intY == intX + intZ || intZ == intX + intY)
}```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 {
let intX = Int(x)
let intY = Int(y)
let intZ = Int(z)
return intX != nil && intY != nil && intZ != nil && (intX == intY + intZ || intY == intX + intZ || intZ == intX + intY)
}
`````````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 {
let intX = Int(x)
let intY = Int(y)
let intZ = Int(z)
return intX != nil && intY != nil && intZ != nil && (intX == intY + intZ || intY == intX + intZ || intZ == intX + intY)
}
// Test cases
print(anyInt(x: 5, y: 2, z: 7)) // true
print(anyInt(x: 3, y: 2, z: 2)) // false
print(anyInt(x: 3, y: -2, z: 1)) // true
print(anyInt(x: 3.6, y: -2.2, z: 2)) // false
```return intX != nil && intY != nil && intZ != nil && (intX == intY + intZ || intY == intX + intZ || intZ == intX + intY) // comparing non-optional value of type 'Int' to 'nil' always returns truereturn intX != nil && intY != nil && intZ != nil && (intX == intY + intZ || intY == intX + intZ || intZ == intX + intY) // comparing non-optional value of type 'Int' to 'nil' always returns truereturn intX != nil && intY != nil && intZ != nil && (intX == intY + intZ || intY == intX + intZ || intZ == intX + intY) // comparing non-optional value of type 'Int' to 'nil' always returns truefunc encode(message: String) -> String {
let vowels = Set(["a", "e", "i", "o", "u"])
let alphabet = "abcdefghijklmnopqrstuvwxyz"
var encoded = ""
for char in message {
if vowels.contains(String(char.lowercased())) {
let index = alphabet.index(alphabet.startIndex, offsetBy: alphabet.range(of: String(char.lowercased()))?.lowerBound!)
let nextChar = alphabet[index.advanced(by: 2)]
encoded += char.isUppercase ? String(nextChar).uppercased() : String(nextChar)
} else {
encoded += char.isUppercase ? String(char).lowercased() : String(char).uppercased()
}
}
return encoded
}```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 {
let vowels = Set(["a", "e", "i", "o", "u"])
let alphabet = "abcdefghijklmnopqrstuvwxyz"
var encoded = ""
for char in message {
if vowels.contains(String(char.lowercased())) {
let index = alphabet.index(alphabet.startIndex, offsetBy: alphabet.range(of: String(char.lowercased()))?.lowerBound!)
let nextChar = alphabet[index.advanced(by: 2)]
encoded += char.isUppercase ? String(nextChar).uppercased() : String(nextChar)
} else {
encoded += char.isUppercase ? String(char).lowercased() : String(char).uppercased()
}
}
return encoded
}
``````
```python
def encode(message):
vowels = {'a', 'e', 'i', 'o', 'u'}
alphabet = 'abcdefghijklmnopqrstuvwxyz'
encoded = ''
for char in message:
if char.lower() in vowels:
index = alphabet.index(char.lower())
next_char = alphabet[(index + 2) % len(alphabet)]
encoded += char.upper() if char.isupper() else next_char
else:
encoded += char.lower() if char.isupper() else char.upper()
return encoded
```let index = alphabet.index(alphabet.startIndex, offsetBy: alphabet.range(of: String(char.lowercased()))?.lowerBound!) // instance method 'index(_:offsetBy:)' requires that 'String.Index?' conform to 'BinaryInteger'let index = alphabet.index(alphabet.startIndex, offsetBy: alphabet.range(of: String(char.lowercased()))?.lowerBound!) // cannot force unwrap value of non-optional type 'String.Index'func encode(message: String) -> String {
let vowels = ["a", "e", "i", "o", "u"]
var encodedMessage = ""
for char in message {
if vowels.contains(String(char)) {
let index = vowels.firstIndex(of: String(char))
let nextIndex = index != nil ? (index ?? 0) + 2 : 0
let nextChar = vowels[nextIndex % vowels.count]
encodedMessage.append(nextChar!)
} else {
let newChar = char.isUppercase ? Character(char.lowercased()) : Character(char.uppercased())
encodedMessage.append(newChar!)
}
}
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 {
let vowels = ["a", "e", "i", "o", "u"]
var encodedMessage = ""
for char in message {
if vowels.contains(String(char)) {
let index = vowels.firstIndex(of: String(char))
let nextIndex = index != nil ? (index ?? 0) + 2 : 0
let nextChar = vowels[nextIndex % vowels.count]
encodedMessage.append(nextChar!)
} else {
let newChar = char.isUppercase ? Character(char.lowercased()) : Character(char.uppercased())
encodedMessage.append(newChar!)
}
}
return encodedMessage
}
``````
```swift
// Test the function
print(encode(message: "test")) // "TGST"
print(encode(message: "This is a message")) // "tHKS KS C MGSSCGG"
```encodedMessage.append(nextChar!) // cannot force unwrap value of non-optional type 'String'encodedMessage.append(newChar!) // cannot force unwrap value of non-optional type 'Character'func encode(message: String) -> String {
let vowels = Set(["a", "e", "i", "o", "u"])
var encodedMessage = ""
for char in message {
if vowels.contains(String(char).lowercased()) {
let ascii = char.asciiValue
let newChar = ascii != nil ? Character(UnicodeScalar(ascii!)!) : char
encodedMessage.append(newChar)
} else {
let newChar = char.isUppercase ? Character(char.lowercased()) : Character(char.uppercased())
encodedMessage.append(newChar)
}
}
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 {
let vowels = Set(["a", "e", "i", "o", "u"])
var encodedMessage = ""
for char in message {
if vowels.contains(String(char).lowercased()) {
let ascii = char.asciiValue
let newChar = ascii != nil ? Character(UnicodeScalar(ascii!)!) : char
encodedMessage.append(newChar)
} else {
let newChar = char.isUppercase ? Character(char.lowercased()) : Character(char.uppercased())
encodedMessage.append(newChar)
}
}
return encodedMessage
}
``````let newChar = ascii != nil ? Character(UnicodeScalar(ascii!)!) : char // cannot force unwrap value of non-optional type 'UnicodeScalar' (aka 'Unicode.Scalar')func encode(message: String) -> String {
let vowels = Set(["a", "e", "i", "o", "u"])
var encodedMessage = ""
for char in message {
if vowels.contains(String(char).lowercased()) {
let ascii = char.asciiValue
let newChar = ascii != nil ? Character(UnicodeScalar(ascii!)!) : char
encodedMessage.append(newChar)
} else {
let newChar = char.isUppercase ? Character(char.lowercased()) : Character(char.uppercased())
encodedMessage.append(newChar)
}
}
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 {
let vowels = Set(["a", "e", "i", "o", "u"])
var encodedMessage = ""
for char in message {
if vowels.contains(String(char).lowercased()) {
let ascii = char.asciiValue
let newChar = ascii != nil ? Character(UnicodeScalar(ascii!)!) : char
encodedMessage.append(newChar)
} else {
let newChar = char.isUppercase ? Character(char.lowercased()) : Character(char.uppercased())
encodedMessage.append(newChar)
}
}
return encodedMessage
}
``````
```swift
print(encode(message: "test")) // "TGST"
print(encode(message: "This is a message")) // "tHKS KS C MGSSCGG"
```let newChar = ascii != nil ? Character(UnicodeScalar(ascii!)!) : char // cannot force unwrap value of non-optional type 'UnicodeScalar' (aka 'Unicode.Scalar')func encode(message: String) -> String {
var encodedMessage = ""
let vowels = ["a", "e", "i", "o", "u"]
for char in message {
if vowels.contains(String(char).lowercased()) {
let index = vowels.firstIndex(of: String(char).lowercased())
let nextChar = vowels[(index ?? 0) + 2]
if char.isUppercase {
encodedMessage.append(nextChar ?? "")
} else {
encodedMessage.append(nextChar?.uppercased() ?? "")
}
} else {
encodedMessage.append(char.isUppercase ? Char(char.lowercased()) : Char(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 = ""
let vowels = ["a", "e", "i", "o", "u"]
for char in message {
if vowels.contains(String(char).lowercased()) {
let index = vowels.firstIndex(of: String(char).lowercased())
let nextChar = vowels[(index ?? 0) + 2]
if char.isUppercase {
encodedMessage.append(nextChar ?? "")
} else {
encodedMessage.append(nextChar?.uppercased() ?? "")
}
} else {
encodedMessage.append(char.isUppercase ? Char(char.lowercased()) : Char(char.uppercased()))
}
}
return encodedMessage
}
print(encode(message: "test")) // "TGST"
print(encode(message: "This is a message")) // "tHKS KS C MGSSCGG"
``````encodedMessage.append(nextChar ?? "") // left side of nil coalescing operator '??' has non-optional type 'String', so the right side is never usedencodedMessage.append(nextChar?.uppercased() ?? "") // cannot use optional chaining on non-optional value of type 'String'encodedMessage.append(char.isUppercase ? Char(char.lowercased()) : Char(char.uppercased())) // cannot find 'Char' in scopeencodedMessage.append(char.isUppercase ? Char(char.lowercased()) : Char(char.uppercased())) // cannot find 'Char' in scopefunc encode(message: String) -> String {
let vowels = Set(["a", "e", "i", "o", "u"])
var encodedMessage = ""
for char in message {
if vowels.contains(String(char).lowercased()) {
let asciiValue = char.asciiValue
let newChar = Character(UnicodeScalar((asciiValue ?? 0) + 2)!)
encodedMessage.append(char.isUppercase ? newChar.uppercased() : newChar.lowercased())
} else {
encodedMessage.append(char.isUppercase ? char.lowercased() : 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 {
let vowels = Set(["a", "e", "i", "o", "u"])
var encodedMessage = ""
for char in message {
if vowels.contains(String(char).lowercased()) {
let asciiValue = char.asciiValue
let newChar = Character(UnicodeScalar((asciiValue ?? 0) + 2)!)
encodedMessage.append(char.isUppercase ? newChar.uppercased() : newChar.lowercased())
} else {
encodedMessage.append(char.isUppercase ? char.lowercased() : char.uppercased())
}
}
return encodedMessage
}
print(encode(message: "test"))
print(encode(message: "This is a message"))
``````let newChar = Character(UnicodeScalar((asciiValue ?? 0) + 2)!) // cannot force unwrap value of non-optional type 'UnicodeScalar' (aka 'Unicode.Scalar')func encode(message: String) -> String {
let vowels = Set(["a", "e", "i", "o", "u"])
var encodedMessage = ""
for char in message {
if vowels.contains(String(char).lowercased()) {
let asciiValue = char.asciiValue
let newChar = asciiValue != nil ? Character(UnicodeScalar(asciiValue!)!) : char
encodedMessage.append(newChar)
} else {
let newChar = char.isUppercase ? Character(char.lowercased()) : Character(char.uppercased())
encodedMessage.append(newChar)
}
}
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 {
let vowels = Set(["a", "e", "i", "o", "u"])
var encodedMessage = ""
for char in message {
if vowels.contains(String(char).lowercased()) {
let asciiValue = char.asciiValue
let newChar = asciiValue != nil ? Character(UnicodeScalar(asciiValue!)!) : char
encodedMessage.append(newChar)
} else {
let newChar = char.isUppercase ? Character(char.lowercased()) : Character(char.uppercased())
encodedMessage.append(newChar)
}
}
return encodedMessage
}
``````
```python
def encode(message):
vowels = {'a', 'e', 'i', 'o', 'u'}
encoded_message = ""
for char in message:
if char.lower() in vowels:
ascii_value = ord(char)
new_char = chr(ascii_value) if ascii_value else char
encoded_message += new_char
else:
new_char = char.upper() if char.islower() else char.lower()
encoded_message += new_char
return encoded_message
print(encode("test"))
print(encode("This is a message"))
```let newChar = asciiValue != nil ? Character(UnicodeScalar(asciiValue!)!) : char // cannot force unwrap value of non-optional type 'UnicodeScalar' (aka 'Unicode.Scalar')func encode(message: String) -> String {
let vowels = ["a", "e", "i", "o", "u"]
var encodedMessage = ""
for char in message {
if vowels.contains(String(char).lowercased()) {
let index = vowels.firstIndex(of: String(char).lowercased())
let nextIndex = index != nil ? (index + 2) % vowels.count : 0
let nextChar = vowels[nextIndex]
encodedMessage.append(char.isUppercase ? nextChar.uppercased() : nextChar)
} else {
encodedMessage.append(char.isUppercase ? char.lowercased() : 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 {
let vowels = ["a", "e", "i", "o", "u"]
var encodedMessage = ""
for char in message {
if vowels.contains(String(char).lowercased()) {
let index = vowels.firstIndex(of: String(char).lowercased())
let nextIndex = index != nil ? (index + 2) % vowels.count : 0
let nextChar = vowels[nextIndex]
encodedMessage.append(char.isUppercase ? nextChar.uppercased() : nextChar)
} else {
encodedMessage.append(char.isUppercase ? char.lowercased() : char.uppercased())
}
}
return encodedMessage
}
``````
```swift
// Test the function
print(encode(message: "test")) // Output: "TGST"
print(encode(message: "This is a message")) // Output: "tHKS KS C MGSSCGG"
```let nextIndex = index != nil ? (index + 2) % vowels.count : 0 // value of optional type 'Array<String>.Index?' (aka 'Optional<Int>') must be unwrapped to a value of type 'Array<String>.Index' (aka 'Int')func encode(message: String) -> String {
let vowels = "aeiouAEIOU"
var encodedMessage = ""
for char in message {
if vowels.contains(char) {
let index = vowels.index(vowels.startIndex, offsetBy: vowels.index(vowels.startIndex, offsetBy: 2)!.encodedOffset)
encodedMessage.append(vowels[index])
} else {
if char.isUppercase {
encodedMessage.append(Character(char.lowercased()))
} else {
encodedMessage.append(Character(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 {
let vowels = "aeiouAEIOU"
var encodedMessage = ""
for char in message {
if vowels.contains(char) {
let index = vowels.index(vowels.startIndex, offsetBy: vowels.index(vowels.startIndex, offsetBy: 2)!.encodedOffset)
encodedMessage.append(vowels[index])
} else {
if char.isUppercase {
encodedMessage.append(Character(char.lowercased()))
} else {
encodedMessage.append(Character(char.uppercased()))
}
}
}
return encodedMessage
}
print(encode(message: "test")) // "TGST"
print(encode(message: "This is a message")) // "tHKS KS C MGSSCGG"
``````let index = vowels.index(vowels.startIndex, offsetBy: vowels.index(vowels.startIndex, offsetBy: 2)!.encodedOffset) // cannot force unwrap value of non-optional type 'String.Index'func encode(message: String) -> String {
let vowels = Set(["a", "e", "i", "o", "u"])
var encodedMessage = ""
for char in message {
if vowels.contains(String(char).lowercased()) {
let asciiValue = char.asciiValue
let newChar = asciiValue != nil ? Character(UnicodeScalar(asciiValue!)!) : char
encodedMessage.append(newChar)
} else {
let newChar = char.isUppercase ? Character(char.lowercased()) : Character(char.uppercased())
encodedMessage.append(newChar)
}
}
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 {
let vowels = Set(["a", "e", "i", "o", "u"])
var encodedMessage = ""
for char in message {
if vowels.contains(String(char).lowercased()) {
let asciiValue = char.asciiValue
let newChar = asciiValue != nil ? Character(UnicodeScalar(asciiValue!)!) : char
encodedMessage.append(newChar)
} else {
let newChar = char.isUppercase ? Character(char.lowercased()) : Character(char.uppercased())
encodedMessage.append(newChar)
}
}
return encodedMessage
}
``````
```swift
// Testing the function
print(encode(message: "test")) // Output: "TGST"
print(encode(message: "This is a message")) // Output: "tHKS KS C MGSSCGG"
```let newChar = asciiValue != nil ? Character(UnicodeScalar(asciiValue!)!) : char // cannot force unwrap value of non-optional type 'UnicodeScalar' (aka 'Unicode.Scalar')func skjkasdkd(lst: [Int]) -> Int {
func isPrime(_ num: Int) -> Bool {
if num <= 1 {
return false
}
for i in 2..<num {
if num % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let sum = String(largestPrime).compactMap { Int(String($0)) }.reduce(0, +)
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 {
func isPrime(_ num: Int) -> Bool {
if num <= 1 {
return false
}
for i in 2..<num {
if num % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let sum = String(largestPrime).compactMap { Int(String($0)) }.reduce(0, +)
return sum
}
`````````python
def skjkasdkd(lst):
def is_prime(num):
if num <= 1:
return False
for i in range(2, num):
if num % i == 0:
return False
return True
largest_prime = 0
for num in lst:
if is_prime(num) and num > largest_prime:
largest_prime = num
sum = sum(int(digit) for digit in str(largest_prime))
return sum
print(skjkasdkd([0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]))
print(skjkasdkd([1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]))
print(skjkasdkd([1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]))
print(skjkasdkd([0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]))
print(skjkasdkd([0, 81, 12, 3, 1, 21]))
print(skjkasdkd([0, 8, 1, 2, 1, 7]))
```func skjkasdkd(lst: [Int]) -> Int {
func isPrime(_ num: Int) -> Bool {
if num <= 1 {
return false
}
for i in 2..<num {
if num % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}```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 {
func isPrime(_ num: Int) -> Bool {
if num <= 1 {
return false
}
for i in 2..<num {
if num % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}
`````````python
def skjkasdkd(lst):
def is_prime(num):
if num <= 1:
return False
for i in range(2, num):
if num % i == 0:
return False
return True
largest_prime = 0
for num in lst:
if is_prime(num) and num > largest_prime:
largest_prime = num
digits = [int(d) for d in str(largest_prime)]
return sum(digits)
print(skjkasdkd([0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]))
print(skjkasdkd([1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]))
print(skjkasdkd([1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]))
print(skjkasdkd([0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]))
print(skjkasdkd([0, 81, 12, 3, 1, 21]))
print(skjkasdkd([0, 8, 1, 2, 1, 7]))
```func skjkasdkd(lst: [Int]) -> Int {
func isPrime(_ num: Int) -> Bool {
if num <= 1 {
return false
}
for i in 2..<num {
if num % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}```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 {
func isPrime(_ num: Int) -> Bool {
if num <= 1 {
return false
}
for i in 2..<num {
if num % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}
`````````python
def skjkasdkd(lst):
def is_prime(num):
if num <= 1:
return False
for i in range(2, num):
if num % i == 0:
return False
return True
largest_prime = 0
for num in lst:
if is_prime(num) and num > largest_prime:
largest_prime = num
digits = [int(d) for d in str(largest_prime)]
return sum(digits)
print(skjkasdkd([0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]))
print(skjkasdkd([1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]))
print(skjkasdkd([1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]))
print(skjkasdkd([0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]))
print(skjkasdkd([0, 81, 12, 3, 1, 21]))
print(skjkasdkd([0, 8, 1, 2, 1, 7]))
```func skjkasdkd(lst: [Int]) -> Int {
func isPrime(_ num: Int) -> Bool {
if num <= 1 {
return false
}
for i in 2..<num {
if num % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}```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 {
func isPrime(_ num: Int) -> Bool {
if num <= 1 {
return false
}
for i in 2..<num {
if num % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}
`````````python
def skjkasdkd(lst):
def is_prime(num):
if num <= 1:
return False
for i in range(2, num):
if num % i == 0:
return False
return True
largest_prime = 0
for num in lst:
if is_prime(num) and num > largest_prime:
largest_prime = num
digits = [int(d) for d in str(largest_prime)]
return sum(digits)
print(skjkasdkd([0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]))
print(skjkasdkd([1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]))
print(skjkasdkd([1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]))
print(skjkasdkd([0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]))
print(skjkasdkd([0, 81, 12, 3, 1, 21]))
print(skjkasdkd([0, 8, 1, 2, 1, 7]))
```func skjkasdkd(lst: [Int]) -> Int {
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}```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 {
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
if n <= 3 {
return true
}
if n % 2 == 0 || n % 3 == 0 {
return false
}
var i = 5
while i * i <= n {
if n % i == 0 || n % (i + 2) == 0 {
return false
}
i += 6
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}
`````````python
def skjkasdkd(lst):
def is_prime(n):
if n <= 1:
return False
if n <= 3:
return True
if n % 2 == 0 or n % 3 == 0:
return False
i = 5
while i * i <= n:
if n % i == 0 or n % (i + 2) == 0:
return False
i += 6
return True
largest_prime = 0
for num in lst:
if is_prime(num) and num > largest_prime:
largest_prime = num
digits = [int(d) for d in str(largest_prime)]
return sum(digits)
print(skjkasdkd([0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]))
print(skjkasdkd([1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]))
print(skjkasdkd([1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]))
print(skjkasdkd([0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]))
print(skjkasdkd([0, 81, 12, 3, 1, 21]))
print(skjkasdkd([0, 8, 1, 2, 1, 7]))
```func skjkasdkd(lst: [Int]) -> Int {
func isPrime(_ num: Int) -> Bool {
if num <= 1 {
return false
}
for i in 2..<num {
if num % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}```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 {
func isPrime(_ num: Int) -> Bool {
if num <= 1 {
return false
}
for i in 2..<num {
if num % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}
`````````python
def skjkasdkd(lst):
def is_prime(num):
if num <= 1:
return False
for i in range(2, num):
if num % i == 0:
return False
return True
largest_prime = 0
for num in lst:
if is_prime(num) and num > largest_prime:
largest_prime = num
digits = [int(d) for d in str(largest_prime)]
return sum(digits)
print(skjkasdkd([0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]))
print(skjkasdkd([1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]))
print(skjkasdkd([1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]))
print(skjkasdkd([0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]))
print(skjkasdkd([0, 81, 12, 3, 1, 21]))
print(skjkasdkd([0, 8, 1, 2, 1, 7]))
```func skjkasdkd(lst: [Int]) -> Int {
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
for i in 2..<n {
if n % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}```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 {
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
for i in 2..<n {
if n % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}
`````````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 {
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
for i in 2..<n {
if n % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}
```func skjkasdkd(lst: [Int]) -> Int {
func isPrime(_ num: Int) -> Bool {
if num <= 1 {
return false
}
for i in 2..<num {
if num % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}```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 {
func isPrime(_ num: Int) -> Bool {
if num <= 1 {
return false
}
for i in 2..<num {
if num % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}
`````````python
def skjkasdkd(lst):
def is_prime(num):
if num <= 1:
return False
for i in range(2, num):
if num % i == 0:
return False
return True
largest_prime = 0
for num in lst:
if is_prime(num) and num > largest_prime:
largest_prime = num
digits = [int(d) for d in str(largest_prime)]
return sum(digits)
print(skjkasdkd([0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]))
print(skjkasdkd([1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]))
print(skjkasdkd([1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]))
print(skjkasdkd([0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]))
print(skjkasdkd([0, 81, 12, 3, 1, 21]))
print(skjkasdkd([0, 8, 1, 2, 1, 7]))
```func skjkasdkd(lst: [Int]) -> Int {
func isPrime(_ num: Int) -> Bool {
if num <= 1 {
return false
}
for i in 2..<num {
if num % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}```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 {
func isPrime(_ num: Int) -> Bool {
if num <= 1 {
return false
}
for i in 2..<num {
if num % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}
`````````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 {
func isPrime(_ num: Int) -> Bool {
if num <= 1 {
return false
}
for i in 2..<num {
if num % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}
```func skjkasdkd(lst: [Int]) -> Int {
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
for i in 2..<n {
if n % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}```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 {
func isPrime(_ n: Int) -> Bool {
if n <= 1 {
return false
}
for i in 2..<n {
if n % i == 0 {
return false
}
}
return true
}
var largestPrime = 0
for num in lst {
if isPrime(num) && num > largestPrime {
largestPrime = num
}
}
let digits = String(largestPrime).compactMap { Int(String($0)) }
return digits.reduce(0, +)
}
`````````python
def skjkasdkd(lst):
def is_prime(n):
if n <= 1:
return False
for i in range(2, n):
if n % i == 0:
return False
return True
largest_prime = 0
for num in lst:
if is_prime(num) and num > largest_prime:
largest_prime = num
digits = [int(d) for d in str(largest_prime)]
return sum(digits)
print(skjkasdkd([0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3]))
print(skjkasdkd([1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1]))
print(skjkasdkd([1, 3, 1, 32, 5107, 34, 83278, 109, 163, 23, 2323, 32, 30, 1, 9, 3]))
print(skjkasdkd([0, 724, 32, 71, 99, 32, 6, 0, 5, 91, 83, 0, 5, 6]))
print(skjkasdkd([0, 81, 12, 3, 1, 21]))
print(skjkasdkd([0, 8, 1, 2, 1, 7]))
```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
}
``````
```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
}
``` // Fatal error: Range requires lowerBound <= upperBoundfunc 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
}
``````
```swift
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
}
countUpTo(n: 5)
``` // Fatal error: Range requires lowerBound <= upperBoundfunc 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
}
// Test cases
print(countUpTo(n: 5)) // [2, 3]
print(countUpTo(n: 11)) // [2, 3, 5, 7]
print(countUpTo(n: 0)) // []
print(countUpTo(n: 20)) // [2, 3, 5, 7, 11, 13, 17, 19]
print(countUpTo(n: 1)) // []
print(countUpTo(n: 18)) // [2, 3, 5, 7, 11, 13, 17]
`````` // Fatal error: Range requires lowerBound <= upperBoundfunc 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
}
``````
```python
def count_up_to(n):
primes = []
for i in range(2, n):
is_prime = True
for j in range(2, i):
if i % j == 0:
is_prime = False
break
if is_prime:
primes.append(i)
return primes
print(count_up_to(5))
print(count_up_to(11))
print(count_up_to(0))
print(count_up_to(20))
print(count_up_to(1))
print(count_up_to(18))
``` // Fatal error: Range requires lowerBound <= upperBoundfunc 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
}
`````````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
}
``` // Fatal error: Range requires lowerBound <= upperBoundfunc 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
}
``````
```swift
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
}
countUpTo(n: 5)
``` // Fatal error: Range requires lowerBound <= upperBoundfunc 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
}
``````
```swift
// Test the function with some test cases
print(countUpTo(n: 5)) // [2, 3]
print(countUpTo(n: 11)) // [2, 3, 5, 7]
print(countUpTo(n: 0)) // []
print(countUpTo(n: 20)) // [2, 3, 5, 7, 11, 13, 17, 19]
print(countUpTo(n: 1)) // []
print(countUpTo(n: 18)) // [2, 3, 5, 7, 11, 13, 17]
``` // Fatal error: Range requires lowerBound <= upperBoundfunc 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
}
`````````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
}
``` // Fatal error: Range requires lowerBound <= upperBoundfunc 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
}
`````````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
}
``` // Fatal error: Range requires lowerBound <= upperBoundfunc 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
}
``````
```swift
// Test the function with some examples
print(countUpTo(n: 5)) // Output: [2, 3]
print(countUpTo(n: 11)) // Output: [2, 3, 5, 7]
print(countUpTo(n: 0)) // Output: []
print(countUpTo(n: 20)) // Output: [2, 3, 5, 7, 11, 13, 17, 19]
print(countUpTo(n: 1)) // Output: []
print(countUpTo(n: 18)) // Output: [2, 3, 5, 7, 11, 13, 17]
``` // Fatal error: Range requires lowerBound <= upperBoundfunc multiply(a: Int, b: Int) -> Int {
let lastDigitA = abs(a) % 10
let lastDigitB = abs(b) % 10
return lastDigitA * lastDigitB
}```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 {
let lastDigitA = abs(a) % 10
let lastDigitB = abs(b) % 10
return lastDigitA * lastDigitB
}
``````
```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 {
let lastDigitA = abs(a) % 10
let lastDigitB = abs(b) % 10
return lastDigitA * lastDigitB
}
```func multiply(a: Int, b: Int) -> Int {
let lastDigitA = abs(a) % 10
let lastDigitB = abs(b) % 10
return lastDigitA * lastDigitB
}```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 {
let lastDigitA = abs(a) % 10
let lastDigitB = abs(b) % 10
return lastDigitA * lastDigitB
}
``````
```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 {
let lastDigitA = abs(a) % 10
let lastDigitB = abs(b) % 10
return lastDigitA * lastDigitB
}
```func multiply(a: Int, b: Int) -> Int {
let unitDigitA = abs(a) % 10
let unitDigitB = abs(b) % 10
return unitDigitA * unitDigitB
}```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 {
let unitDigitA = abs(a) % 10
let unitDigitB = abs(b) % 10
return unitDigitA * unitDigitB
}
``````
```swift
// Test cases
print(multiply(a: 148, b: 412)) // 16
print(multiply(a: 19, b: 28)) // 72
print(multiply(a: 2020, b: 1851)) // 0
print(multiply(a: 14, b: -15)) // 20
```func multiply(a: Int, b: Int) -> Int {
let unitDigitA = abs(a) % 10
let unitDigitB = abs(b) % 10
return unitDigitA * unitDigitB
}```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 {
let unitDigitA = abs(a) % 10
let unitDigitB = abs(b) % 10
return unitDigitA * unitDigitB
}
``````
```swift
// Test the function with the provided examples
print(multiply(a: 148, b: 412)) // Expected output: 16
print(multiply(a: 19, b: 28)) // Expected output: 72
print(multiply(a: 2020, b: 1851)) // Expected output: 0
print(multiply(a: 14, b: -15)) // Expected output: 20
```func multiply(a: Int, b: Int) -> Int {
let unitDigitA = abs(a) % 10
let unitDigitB = abs(b) % 10
return unitDigitA * unitDigitB
}```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 {
let unitDigitA = abs(a) % 10
let unitDigitB = abs(b) % 10
return unitDigitA * unitDigitB
}
`````````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 {
let unitDigitA = abs(a) % 10
let unitDigitB = abs(b) % 10
return unitDigitA * unitDigitB
}
```func multiply(a: Int, b: Int) -> Int {
let unitDigitA = abs(a) % 10
let unitDigitB = abs(b) % 10
return unitDigitA * unitDigitB
}```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 {
let unitDigitA = abs(a) % 10
let unitDigitB = abs(b) % 10
return unitDigitA * unitDigitB
}
``````
```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 {
let unitDigitA = abs(a) % 10
let unitDigitB = abs(b) % 10
return unitDigitA * unitDigitB
}
```func multiply(a: Int, b: Int) -> Int {
let unitDigitA = abs(a) % 10
let unitDigitB = abs(b) % 10
return unitDigitA * unitDigitB
}```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 {
let unitDigitA = abs(a) % 10
let unitDigitB = abs(b) % 10
return unitDigitA * unitDigitB
}
``````
```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 {
let unitDigitA = abs(a) % 10
let unitDigitB = abs(b) % 10
return unitDigitA * unitDigitB
}
```func multiply(a: Int, b: Int) -> Int {
let lastDigitA = abs(a) % 10
let lastDigitB = abs(b) % 10
return lastDigitA * lastDigitB
}```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 {
let lastDigitA = abs(a) % 10
let lastDigitB = abs(b) % 10
return lastDigitA * lastDigitB
}
``````
```swift
// Test the function with the given examples
print(multiply(a: 148, b: 412)) // Expected output: 16
print(multiply(a: 19, b: 28)) // Expected output: 72
print(multiply(a: 2020, b: 1851)) // Expected output: 0
print(multiply(a: 14, b: -15)) // Expected output: 20
```func multiply(a: Int, b: Int) -> Int {
let unitDigitA = abs(a) % 10
let unitDigitB = abs(b) % 10
return unitDigitA * unitDigitB
}```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 {
let unitDigitA = abs(a) % 10
let unitDigitB = abs(b) % 10
return unitDigitA * unitDigitB
}
``````
```swift
// Test the function with the given examples
print(multiply(a: 148, b: 412)) // Output: 16
print(multiply(a: 19, b: 28)) // Output: 72
print(multiply(a: 2020, b: 1851)) // Output: 0
print(multiply(a: 14, b: -15)) // Output: 20
```func multiply(a: Int, b: Int) -> Int {
let unitDigitA = abs(a) % 10
let unitDigitB = abs(b) % 10
return unitDigitA * unitDigitB
}```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 {
let unitDigitA = abs(a) % 10
let unitDigitB = abs(b) % 10
return unitDigitA * unitDigitB
}
``````
```swift
// Test the function with the given examples
print(multiply(a: 148, b: 412)) // Output: 16
print(multiply(a: 19, b: 28)) // Output: 72
print(multiply(a: 2020, b: 1851)) // Output: 0
print(multiply(a: 14, b: -15)) // Output: 20
```func countUpper(s: String) -> Int {
let vowels = Set("AEIOU")
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(char) {
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 {
let vowels = Set("AEIOU")
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(char) {
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 {
let vowels = Set("AEIOU")
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(char) {
count += 1
}
}
return count
}
// Test cases
print(countUpper(s: "aBCdEf")) // 1
print(countUpper(s: "abcdefg")) // 0
print(countUpper(s: "dBBE")) // 0
```func countUpper(s: String) -> Int {
let vowels = Set("AEIOU")
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(char) {
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 {
let vowels = Set("AEIOU")
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(char) {
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 {
let vowels = Set("AEIOU")
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(char) {
count += 1
}
}
return count
}
// Test cases
print(countUpper(s: "aBCdEf")) // 1
print(countUpper(s: "abcdefg")) // 0
print(countUpper(s: "dBBE")) // 0
```func countUpper(s: String) -> Int {
let vowels = Set("AEIOU")
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(char) {
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 {
let vowels = Set("AEIOU")
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(char) {
count += 1
}
}
return count
}
`````````python
def countUpper(s):
vowels = set("AEIOU")
count = 0
for i in range(0, len(s), 2):
if s[i] in vowels:
count += 1
return count
print(countUpper("aBCdEf")) # 1
print(countUpper("abcdefg")) # 0
print(countUpper("dBBE")) # 0
```func countUpper(s: String) -> Int {
let vowels = Set("AEIOU")
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(char.uppercased()) {
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 {
let vowels = Set("AEIOU")
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(char.uppercased()) {
count += 1
}
}
return count
}
`````` // XCTAssertTrue failedfunc countUpper(s: String) -> Int {
let vowels = Set("AEIOU")
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(char.uppercased()) {
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 {
let vowels = Set("AEIOU")
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(char.uppercased()) {
count += 1
}
}
return count
}
``````
```python
# Given a string s, count the number of uppercase vowels in even indices.
# For example:
# count_upper("aBCdEf") == 1
# count_upper("abcdefg") == 0
# count_upper("dBBE") == 0
def count_upper(s):
vowels = set("AEIOU")
count = 0
for i in range(0, len(s), 2):
if s[i] in vowels:
count += 1
return count
``` // XCTAssertTrue failedfunc countUpper(s: String) -> Int {
let vowels = Set("AEIOU")
var count = 0
for (i, c) in s.enumerated() {
if i % 2 == 0 && vowels.contains(c) {
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 {
let vowels = Set("AEIOU")
var count = 0
for (i, c) in s.enumerated() {
if i % 2 == 0 && vowels.contains(c) {
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 {
let vowels = Set("AEIOU")
var count = 0
for (i, c) in s.enumerated() {
if i % 2 == 0 && vowels.contains(c) {
count += 1
}
}
return count
}
// Test cases
print(countUpper(s: "aBCdEf")) // 1
print(countUpper(s: "abcdefg")) // 0
print(countUpper(s: "dBBE")) // 0
```func countUpper(s: String) -> Int {
let vowels = Set("AEIOU")
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(char) {
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 {
let vowels = Set("AEIOU")
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(char) {
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 {
let vowels = Set("AEIOU")
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(char) {
count += 1
}
}
return count
}
// Test cases
print(countUpper(s: "aBCdEf")) // 1
print(countUpper(s: "abcdefg")) // 0
print(countUpper(s: "dBBE")) // 0
```func countUpper(s: String) -> Int {
let vowels = Set("AEIOU")
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(char) {
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 {
let vowels = Set("AEIOU")
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(char) {
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 {
let vowels = Set("AEIOU")
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(char) {
count += 1
}
}
return count
}
// Test cases
print(countUpper(s: "aBCdEf")) // 1
print(countUpper(s: "abcdefg")) // 0
print(countUpper(s: "dBBE")) // 0
```func countUpper(s: String) -> Int {
let vowels = Set(["A", "E", "I", "O", "U"])
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(String(char)) {
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 {
let vowels = Set(["A", "E", "I", "O", "U"])
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(String(char)) {
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 {
let vowels = Set(["A", "E", "I", "O", "U"])
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(String(char)) {
count += 1
}
}
return count
}
// Test cases
print(countUpper(s: "aBCdEf")) // 1
print(countUpper(s: "abcdefg")) // 0
print(countUpper(s: "dBBE")) // 0
```func countUpper(s: String) -> Int {
let vowels = Set(["A", "E", "I", "O", "U"])
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(String(char)) {
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 {
let vowels = Set(["A", "E", "I", "O", "U"])
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(String(char)) {
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 {
let vowels = Set(["A", "E", "I", "O", "U"])
var count = 0
for (index, char) in s.enumerated() {
if index % 2 == 0 && vowels.contains(String(char)) {
count += 1
}
}
return count
}
// Test cases
print(countUpper(s: "aBCdEf")) // 1
print(countUpper(s: "abcdefg")) // 0
print(countUpper(s: "dBBE")) // 0
```func closestInteger(value: String) -> Int {
if let number = Double(value), number != 0 {
let rounded = round(number)
let roundedInt = Int(rounded)
let roundedUp = roundedInt + 1
let roundedDown = roundedInt - 1
let diffUp = abs(rounded - roundedUp)
let diffDown = abs(rounded - roundedDown)
if diffUp < diffDown {
return roundedUp
} else {
return roundedDown
}
} else {
return 0
}
}```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 {
if let number = Double(value), number != 0 {
let rounded = round(number)
let roundedInt = Int(rounded)
let roundedUp = roundedInt + 1
let roundedDown = roundedInt - 1
let diffUp = abs(rounded - roundedUp)
let diffDown = abs(rounded - roundedDown)
if diffUp < diffDown {
return roundedUp
} else {
return roundedDown
}
} else {
return 0
}
}
``````
```python
# 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
def closestInteger(value: str) -> int:
try:
number = float(value)
rounded = round(number)
roundedInt = int(rounded)
roundedUp = roundedInt + 1
roundedDown = roundedInt - 1
diffUp = abs(rounded - roundedUp)
diffDown = abs(rounded - roundedDown)
if diffUp < diffDown:
return roundedUp
else:
return roundedDown
except ValueError:
return 0
```let diffUp = abs(rounded - roundedUp) // binary operator '-' cannot be applied to operands of type 'Double' and 'Int'let diffDown = abs(rounded - roundedDown) // binary operator '-' cannot be applied to operands of type 'Double' and 'Int'func closestInteger(value: String) -> Int {
let number = Double(value) ?? 0
let rounded = round(number)
let roundedUp = Int(rounded)
let roundedDown = roundedUp - 1
let roundedUpDiff = abs(roundedUp - number)
let roundedDownDiff = abs(roundedDown - number)
if roundedUpDiff < roundedDownDiff {
return roundedUp
} else {
return roundedDown
}
}```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 number = Double(value) ?? 0
let rounded = round(number)
let roundedUp = Int(rounded)
let roundedDown = roundedUp - 1
let roundedUpDiff = abs(roundedUp - number)
let roundedDownDiff = abs(roundedDown - number)
if roundedUpDiff < roundedDownDiff {
return roundedUp
} else {
return roundedDown
}
}
``````
```swift
// Test the function with some examples
print(closestInteger(value: "10")) // 10
print(closestInteger(value: "15.3")) // 15
print(closestInteger(value: "14.5")) // 15
print(closestInteger(value: "-14.5")) // -15
```let roundedUpDiff = abs(roundedUp - number) // binary operator '-' cannot be applied to operands of type 'Int' and 'Double'let roundedDownDiff = abs(roundedDown - number) // binary operator '-' cannot be applied to operands of type 'Int' and 'Double'func closestInteger(value: String) -> Int {
if let number = Double(value), number.isWholeNumber() {
return Int(number)
} else {
let decimal = Double(value)!
let rounded = round(decimal)
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 {
if let number = Double(value), number.isWholeNumber() {
return Int(number)
} else {
let decimal = Double(value)!
let rounded = round(decimal)
return Int(rounded)
}
}
// Test cases
print(closestInteger(value: "10")) // 10
print(closestInteger(value: "15.3")) // 15
print(closestInteger(value: "14.5")) // 15
print(closestInteger(value: "-14.5")) // -15
`````````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 {
if let number = Double(value), number.isWholeNumber() {
return Int(number)
} else {
let decimal = Double(value)!
let rounded = round(decimal)
return Int(rounded)
}
}
// Test cases
print(closestInteger(value: "10")) // 10
print(closestInteger(value: "15.3")) // 15
print(closestInteger(value: "14.5")) // 15
print(closestInteger(value: "-14.5")) // -15
```if let number = Double(value), number.isWholeNumber() { // value of type 'Double' has no member 'isWholeNumber'func closestInteger(value: String) -> Int {
if let number = Double(value), number != 0 {
let rounded = round(number)
return Int(rounded)
}
return 0
}```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 {
if let number = Double(value), number != 0 {
let rounded = round(number)
return Int(rounded)
}
return 0
}
closestInteger(value: "10") // 10
closestInteger(value: "15.3") // 15
closestInteger(value: "14.5") // 15
closestInteger(value: "-14.5") // -15
`````````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 {
if let number = Double(value), number != 0 {
let rounded = round(number)
return Int(rounded)
}
return 0
}
closestInteger(value: "10") // 10
closestInteger(value: "15.3") // 15
closestInteger(value: "14.5") // 15
closestInteger(value: "-14.5") // -15
```func closestInteger(value: String) -> Int {
let num = Double(value)
let rounded = round(num ?? 0)
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 num = Double(value)
let rounded = round(num ?? 0)
return Int(rounded)
}
closestInteger(value: "15.3")
`````````python
def closest_integer(value: str) -> int:
num = float(value)
rounded = round(num)
return int(rounded)
closest_integer(value="15.3")
```func closestInteger(value: String) -> Int {
let num = Double(value)
let intPart = Int(num!)
let fracPart = num? - Double(intPart!)
if fracPart != 0.0 {
if fracPart > 0.5 {
return intPart + 1
} else {
return intPart
}
} else {
return intPart
}
}```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 num = Double(value)
let intPart = Int(num!)
let fracPart = num? - Double(intPart!)
if fracPart != 0.0 {
if fracPart > 0.5 {
return intPart + 1
} else {
return intPart
}
} else {
return intPart
}
}
``````
```swift
// Test the function with some test cases
print(closestInteger(value: "10")) // 10
print(closestInteger(value: "15.3")) // 15
print(closestInteger(value: "14.5")) // 15
print(closestInteger(value: "-14.5")) // -15
```let fracPart = num? - Double(intPart!) // value of optional type 'Double?' must be unwrapped to a value of type 'Double'let fracPart = num? - Double(intPart!) // cannot force unwrap value of non-optional type 'Int'func closestInteger(value: String) -> Int {
if let num = Double(value), num > 0 {
return Int(num + 0.5)
} else if let num = Double(value), num < 0 {
return Int(num - 0.5)
} else {
return 0
}
}```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 {
if let num = Double(value), num > 0 {
return Int(num + 0.5)
} else if let num = Double(value), num < 0 {
return Int(num - 0.5)
} else {
return 0
}
}
``````
```swift
// Test the function with some examples
print(closestInteger(value: "10")) // 10
print(closestInteger(value: "15.3")) // 15
print(closestInteger(value: "14.5")) // 15
print(closestInteger(value: "-14.5")) // -15
```func closestInteger(value: String) -> Int {
if let number = Double(value), number >= 0 {
let intPart = Int(number)
let fracPart = number - Double(intPart)
if fracPart >= 0.5 {
return intPart + 1
} else {
return intPart
}
} else if let number = Double(value), number < 0 {
let intPart = Int(abs(number))
let fracPart = abs(number) - Double(intPart)
if fracPart >= 0.5 {
return -(intPart + 1)
} else {
return -intPart
}
} else {
return 0
}
}```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 {
if let number = Double(value), number >= 0 {
let intPart = Int(number)
let fracPart = number - Double(intPart)
if fracPart >= 0.5 {
return intPart + 1
} else {
return intPart
}
} else if let number = Double(value), number < 0 {
let intPart = Int(abs(number))
let fracPart = abs(number) - Double(intPart)
if fracPart >= 0.5 {
return -(intPart + 1)
} else {
return -intPart
}
} else {
return 0
}
}
``````
```swift
// Test the function with some examples
print(closestInteger(value: "10")) // Output: 10
print(closestInteger(value: "15.3")) // Output: 15
print(closestInteger(value: "14.5")) // Output: 15
print(closestInteger(value: "-14.5")) // Output: -15
```func closestInteger(value: String) -> Int {
if let number = Double(value), number >= 0 {
let rounded = Int(number)
let decimal = number - Double(rounded)
if decimal >= 0.5 {
return rounded + 1
} else {
return rounded
}
} else if let number = Double(value), number < 0 {
let rounded = Int(abs(number))
let decimal = abs(number) - Double(rounded)
if decimal >= 0.5 {
return -(rounded + 1)
} else {
return -rounded
}
} else {
return 0
}
}```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 {
if let number = Double(value), number >= 0 {
let rounded = Int(number)
let decimal = number - Double(rounded)
if decimal >= 0.5 {
return rounded + 1
} else {
return rounded
}
} else if let number = Double(value), number < 0 {
let rounded = Int(abs(number))
let decimal = abs(number) - Double(rounded)
if decimal >= 0.5 {
return -(rounded + 1)
} else {
return -rounded
}
} else {
return 0
}
}
``````
```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 {
if let number = Double(value), number >= 0 {
let rounded = Int(number)
let decimal = number - Double(rounded)
if decimal >= 0.5 {
return rounded + 1
} else {
return rounded
}
} else if let number = Double(value), number < 0 {
let rounded = Int(abs(number))
let decimal = abs(number) - Double(rounded)
if decimal >= 0.5 {
return -(rounded + 1)
} else {
return -rounded
}
} else {
return 0
}
}
// Test cases
print(closestInteger(value: "10")) // 10
print(closestInteger(value: "15.3")) // 15
print(closestInteger(value: "14.5")) // 15
print(closestInteger(value: "-14.5")) // -15
```func closestInteger(value: String) -> Int {
if let number = Double(value), number != 0 {
let rounded = round(number)
let floor = Int(number)
let ceil = floor + 1
return abs(rounded - number) < abs(ceil - number) ? floor : ceil
}
return 0
}```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 {
if let number = Double(value), number != 0 {
let rounded = round(number)
let floor = Int(number)
let ceil = floor + 1
return abs(rounded - number) < abs(ceil - number) ? floor : ceil
}
return 0
}
// Test cases
print(closestInteger(value: "10")) // 10
print(closestInteger(value: "15.3")) // 15
print(closestInteger(value: "14.5")) // 15
print(closestInteger(value: "-14.5")) // -15
print(closestInteger(value: "0")) // 0
print(closestInteger(value: "-0.1")) // 0
print(closestInteger(value: "0.1")) // 0
print(closestInteger(value: "9223372036854775807")) // 9223372036854775807
print(closestInteger(value: "-9223372036854775807")) // -9223372036854775807
`````````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 {
if let number = Double(value), number != 0 {
let rounded = round(number)
let floor = Int(number)
let ceil = floor + 1
return abs(rounded - number) < abs(ceil - number) ? floor : ceil
}
return 0
}
// Test cases
print(closestInteger(value: "10")) // 10
print(closestInteger(value: "15.3")) // 15
print(closestInteger(value: "14.5")) // 15
print(closestInteger(value: "-14.5")) // -15
print(closestInteger(value: "0")) // 0
print(closestInteger(value: "-0.1")) // 0
print(closestInteger(value: "0.1")) // 0
print(closestInteger(value: "9223372036854775807")) // 9223372036854775807
print(closestInteger(value: "-9223372036854775807")) // -9223372036854775807
```return abs(rounded - number) < abs(ceil - number) ? floor : ceil // cannot convert value of type 'Int' to expected argument type 'Double'func makeAPile(n: Int) -> [Int] {
var result = [Int]()
var current = n
for i in 0..<n {
result.append(current)
if current % 2 == 0 {
current += 2
} else {
current += 2
}
}
return result
}```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 result = [Int]()
var current = n
for i in 0..<n {
result.append(current)
if current % 2 == 0 {
current += 2
} else {
current += 2
}
}
return result
}
`````````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 result = [Int]()
var current = n
for i in 0..<n {
result.append(current)
if current % 2 == 0 {
current += 2
} else {
current += 2
}
}
return result
}
```for i in 0..<n { // immutable value 'i' was never used; consider replacing with '_' or removing itfunc makeAPile(n: Int) -> [Int] {
var result = [Int]()
var current = n
for _ in 1...n {
result.append(current)
if current % 2 == 0 {
current += 2
} else {
current += 2
}
}
return result
}```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 result = [Int]()
var current = n
for _ in 1...n {
result.append(current)
if current % 2 == 0 {
current += 2
} else {
current += 2
}
}
return result
}
`````````python
def make_a_pile(n):
result = []
current = n
for _ in range(n):
result.append(current)
if current % 2 == 0:
current += 2
else:
current += 2
return result
make_a_pile(3)
```func makeAPile(n: Int) -> [Int] {
var result = [Int]()
var stones = n
for i in 0..<n {
result.append(stones)
if stones % 2 == 0 {
stones += 2
} else {
stones += 2
}
}
return result
}```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 result = [Int]()
var stones = n
for i in 0..<n {
result.append(stones)
if stones % 2 == 0 {
stones += 2
} else {
stones += 2
}
}
return result
}
`````````swift
func makeAPile(n: Int) -> [Int] {
var result = [Int]()
var stones = n
for i in 0..<n {
result.append(stones)
if stones % 2 == 0 {
stones += 2
} else {
stones += 2
}
}
return result
}
makeAPile(n: 3)
```for i in 0..<n { // immutable value 'i' was never used; consider replacing with '_' or removing itfunc makeAPile(n: Int) -> [Int] {
var result = [Int]()
var stones = n
for i in 0..<n {
result.append(stones)
if stones % 2 == 0 {
stones += 2
} else {
stones += 2
}
}
return result
}```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 result = [Int]()
var stones = n
for i in 0..<n {
result.append(stones)
if stones % 2 == 0 {
stones += 2
} else {
stones += 2
}
}
return result
}
`````````python
def make_a_pile(n):
result = []
stones = n
for i in range(n):
result.append(stones)
if stones % 2 == 0:
stones += 2
else:
stones += 2
return result
make_a_pile(3)
```for i in 0..<n { // immutable value 'i' was never used; consider replacing with '_' or removing itfunc makeAPile(n: Int) -> [Int] {
var result = [Int]()
var current = n
for _ in 1...n {
result.append(current)
current = current % 2 == 0 ? current + 2 : current + 2
}
return result
}```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 result = [Int]()
var current = n
for _ in 1...n {
result.append(current)
current = current % 2 == 0 ? current + 2 : current + 2
}
return result
}
``````
```swift
makeAPile(n: 3)
```func makeAPile(n: Int) -> [Int] {
var result = [Int]()
var current = n
for i in 0..<n {
result.append(current)
if current % 2 == 0 {
current += 2
} else {
current += 2
}
}
return result
}```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 result = [Int]()
var current = n
for i in 0..<n {
result.append(current)
if current % 2 == 0 {
current += 2
} else {
current += 2
}
}
return result
}
`````````swift
func makeAPile(n: Int) -> [Int] {
var result = [Int]()
var current = n
for i in 0..<n {
result.append(current)
if current % 2 == 0 {
current += 2
} else {
current += 2
}
}
return result
}
makeAPile(n: 3)
```for i in 0..<n { // immutable value 'i' was never used; consider replacing with '_' or removing itfunc makeAPile(n: Int) -> [Int] {
var result = [Int]()
var stones = n
for i in 0..<n {
result.append(stones)
if stones % 2 == 0 {
stones += 2
} else {
stones += 2
}
}
return result
}```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 result = [Int]()
var stones = n
for i in 0..<n {
result.append(stones)
if stones % 2 == 0 {
stones += 2
} else {
stones += 2
}
}
return result
}
`````````python
def make_a_pile(n):
result = []
stones = n
for i in range(n):
result.append(stones)
if stones % 2 == 0:
stones += 2
else:
stones += 2
return result
make_a_pile(3)
```for i in 0..<n { // immutable value 'i' was never used; consider replacing with '_' or removing itfunc makeAPile(n: Int) -> [Int] {
var result = [Int]()
var current = n
for i in 0..<n {
result.append(current)
if current % 2 == 0 {
current += 2
} else {
current += 2
}
}
return result
}```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 result = [Int]()
var current = n
for i in 0..<n {
result.append(current)
if current % 2 == 0 {
current += 2
} else {
current += 2
}
}
return result
}
`````````python
def make_a_pile(n):
result = []
current = n
for i in range(n):
result.append(current)
if current % 2 == 0:
current += 2
else:
current += 2
return result
make_a_pile(3)
```for i in 0..<n { // immutable value 'i' was never used; consider replacing with '_' or removing itfunc makeAPile(n: Int) -> [Int] {
var result = [Int]()
var stones = n
for i in 0..<n {
result.append(stones)
if stones % 2 == 0 {
stones += 2
} else {
stones += 2
}
}
return result
}```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 result = [Int]()
var stones = n
for i in 0..<n {
result.append(stones)
if stones % 2 == 0 {
stones += 2
} else {
stones += 2
}
}
return result
}
``````
```swift
makeAPile(n: 3)
```for i in 0..<n { // immutable value 'i' was never used; consider replacing with '_' or removing itfunc makeAPile(n: Int) -> [Int] {
var result = [Int]()
var stones = n
for i in 0..<n {
result.append(stones)
if stones % 2 == 0 {
stones += 2
} else {
stones += 2
}
}
return result
}```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 result = [Int]()
var stones = n
for i in 0..<n {
result.append(stones)
if stones % 2 == 0 {
stones += 2
} else {
stones += 2
}
}
return result
}
`````````swift
func makeAPile(n: Int) -> [Int] {
var result = [Int]()
var stones = n
for i in 0..<n {
result.append(stones)
if stones % 2 == 0 {
stones += 2
} else {
stones += 2
}
}
return result
}
makeAPile(n: 3)
```for i in 0..<n { // immutable value 'i' was never used; consider replacing with '_' or removing itfunc wordsString(s: String) -> [String] {
return s.components(separatedBy: .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: .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: .whitespacesAndNewlines)
}
``` // XCTAssertTrue failedfunc wordsString(s: String) -> [String] {
return s.components(separatedBy: .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: .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: .whitespacesAndNewlines)
}
``` // XCTAssertTrue failedfunc wordsString(s: String) -> [String] {
return s.components(separatedBy: .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: .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: .whitespacesAndNewlines)
}
``` // XCTAssertTrue failedfunc wordsString(s: String) -> [String] {
return s.components(separatedBy: .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: .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: .whitespacesAndNewlines)
}
``` // XCTAssertTrue failedfunc wordsString(s: String) -> [String] {
return s.components(separatedBy: .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: .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: .whitespacesAndNewlines)
}
``` // XCTAssertTrue failedfunc wordsString(s: String) -> [String] {
return s.components(separatedBy: .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: .whitespacesAndNewlines)
}
`````````swift
func wordsString(s: String) -> [String] {
return s.components(separatedBy: .whitespacesAndNewlines)
}
// Test cases
print(wordsString(s: "Hi, my name is John")) // ["Hi", "my", "name", "is", "John"]
print(wordsString(s: "One, two, three, four, five, six")) // ["One", "two", "three", "four", "five", "six"]
``` // XCTAssertTrue failedfunc wordsString(s: String) -> [String] {
return s.components(separatedBy: .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: .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: .whitespacesAndNewlines)
}
``` // XCTAssertTrue failedfunc wordsString(s: String) -> [String] {
return s.components(separatedBy: .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: .whitespacesAndNewlines)
}
``````
```swift
func wordsString(s: String) -> [String] {
return s.components(separatedBy: .whitespacesAndNewlines)
}
// Test cases
print(wordsString(s: "Hi, my name is John")) // ["Hi", "my", "name", "is", "John"]
print(wordsString(s: "One, two, three, four, five, six")) // ["One", "two", "three", "four", "five", "six"]
``` // XCTAssertTrue failedfunc wordsString(s: String) -> [String] {
return s.components(separatedBy: .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: .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: .whitespacesAndNewlines)
}
``` // XCTAssertTrue failedfunc wordsString(s: String) -> [String] {
return s.components(separatedBy: .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: .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: .whitespacesAndNewlines)
}
``` // XCTAssertTrue failedfunc chooseNum(x: Int, y: Int) -> Int {
var result = -1
for num in x...y {
if num % 2 == 0 {
result = num
}
}
return result
}
func chooseNum(x: Int, y: Int) -> Int {
var result = -1
for num in x...y {
if num % 2 == 1 {
result = num
break
}
}
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 num in x...y {
if num % 2 == 0 {
result = num
}
}
return result
}
// This function takes two positive numbers x and y and returns the
// smallest 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 result = -1
for num in x...y {
if num % 2 == 1 {
result = num
break
}
}
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 num in x...y {
if num % 2 == 0 {
result = num
}
}
return result
}
// This function takes two positive numbers x and y and returns the
// smallest 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 result = -1
for num in x...y {
if num % 2 == 1 {
result = num
break
}
}
return result
}
```func chooseNum(x: Int, y: Int) -> Int { // invalid redeclaration of 'chooseNum(x:y:)'func chooseNum(x: Int, y: Int) -> Int {
var maxEven = -1
for num in x...y {
if num % 2 == 0 {
maxEven = num
}
}
return maxEven
}```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 maxEven = -1
for num in x...y {
if num % 2 == 0 {
maxEven = num
}
}
return maxEven
}
`````````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 maxEven = -1
for num in x...y {
if num % 2 == 0 {
maxEven = num
}
}
return maxEven
}
``` // Fatal error: Range requires lowerBound <= upperBoundfunc chooseNum(x: Int, y: Int) -> Int {
var result = -1
for num in x...y {
if num % 2 == 0 {
result = num
}
}
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 num in x...y {
if num % 2 == 0 {
result = num
}
}
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 num in x...y {
if num % 2 == 0 {
result = num
}
}
return result
}
``` // Fatal error: Range requires lowerBound <= upperBoundfunc chooseNum(x: Int, y: Int) -> Int {
var maxEven = -1
for i in x...y {
if i % 2 == 0 {
maxEven = i
}
}
return maxEven
}```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 maxEven = -1
for i in x...y {
if i % 2 == 0 {
maxEven = i
}
}
return maxEven
}
`````````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 maxEven = -1
for i in x...y {
if i % 2 == 0 {
maxEven = i
}
}
return maxEven
}
// Test cases
print(chooseNum(x: 12, y: 15)) // Output: 14
print(chooseNum(x: 13, y: 12)) // Output: -1
``` // Fatal error: Range requires lowerBound <= upperBoundfunc chooseNum(x: Int, y: Int) -> Int {
var maxEven = -1
for num in x...y {
if num % 2 == 0 {
maxEven = max(maxEven, num)
}
}
return maxEven
}```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 maxEven = -1
for num in x...y {
if num % 2 == 0 {
maxEven = max(maxEven, num)
}
}
return maxEven
}
`````````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 maxEven = -1
for num in x...y {
if num % 2 == 0 {
maxEven = max(maxEven, num)
}
}
return maxEven
}
``` // Fatal error: Range requires lowerBound <= upperBoundfunc chooseNum(x: Int, y: Int) -> Int {
var maxEven = -1
for num in x...y {
if num % 2 == 0 {
maxEven = max(maxEven, num)
}
}
return maxEven
}```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 maxEven = -1
for num in x...y {
if num % 2 == 0 {
maxEven = max(maxEven, num)
}
}
return maxEven
}
`````````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 maxEven = -1
for num in x...y {
if num % 2 == 0 {
maxEven = max(maxEven, num)
}
}
return maxEven
}
``` // Fatal error: Range requires lowerBound <= upperBoundfunc 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
}
`````````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
}
``` // Fatal error: Range requires lowerBound <= upperBoundfunc 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
}
`````````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
}
// Test cases
print(chooseNum(x: 12, y: 15)) // Output: 14
print(chooseNum(x: 13, y: 12)) // Output: -1
``` // Fatal error: Range requires lowerBound <= upperBoundfunc 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
}
`````````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
}
// Test cases
print(chooseNum(x: 12, y: 15)) // Output: 14
print(chooseNum(x: 13, y: 12)) // Output: -1
``` // Fatal error: Range requires lowerBound <= upperBoundfunc chooseNum(x: Int, y: Int) -> Int {
var result = -1
for num in x...y {
if num % 2 == 0 {
result = num
}
}
return result
}
func sumEven(n: Int) -> Int {
var sum = 0
for num in 1...n {
if num % 2 == 0 {
sum += num
}
}
return sum
}
func sumOdd(n: Int) -> Int {
var sum = 0
for num in 1...n {
if num % 2 != 0 {
sum += num
}
}
return sum
}```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 num in x...y {
if num % 2 == 0 {
result = num
}
}
return result
}
// This function takes a positive number n and returns the sum of all
// even numbers in the range [1, n] inclusive. If there's no such number,
// then the function should return -1.
// For example:
// sumEven(n: 10) == 30
// sumEven(n: 5) == -1
func sumEven(n: Int) -> Int {
var sum = 0
for num in 1...n {
if num % 2 == 0 {
sum += num
}
}
return sum
}
// This function takes a positive number n and returns the sum of all
// odd numbers in the range [1, n] inclusive. If there's no such number,
// then the function should return -1.
// For example:
// sumOdd(n: 10) == 25
// sumOdd(n: 5) == -1
func sumOdd(n: Int) -> Int {
var sum = 0
for num in 1...n {
if num % 2 != 0 {
sum += num
}
}
return sum
}
`````` // Fatal error: Range requires lowerBound <= upperBoundextension 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 = Int((n + m) / 2)
let binary = avg.binaryValue
return .success(binary)
}
extension Int {
var binaryValue: String {
return String(self, radix: 2)
}
}```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 = Int((n + m) / 2)
let binary = avg.binaryValue
return .success(binary)
}
extension Int {
var binaryValue: String {
return String(self, radix: 2)
}
}
let result = roundedAvg(n: 1, m: 5)
switch result {
case .success(let value):
print(value)
case .failure(let error):
print(error)
}
``````
```swift
// Output:
// 0b11
```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
let roundedAvg = Int(avg)
let binary = String(roundedAvg, radix: 2)
return .success("0b\(binary)")
}```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
let roundedAvg = Int(avg)
let binary = String(roundedAvg, radix: 2)
return .success("0b\(binary)")
}
roundedAvg(n: 1, m: 5)
roundedAvg(n: 7, m: 5)
roundedAvg(n: 10, m: 20)
roundedAvg(n: 20, m: 33)
``````
```python
def rounded_avg(n, m):
if n > m:
return -1
avg = (n + m) // 2
rounded_avg = int(avg)
binary = bin(rounded_avg)[2:]
return "0b" + binary
print(rounded_avg(1, 5))
print(rounded_avg(7, 5))
print(rounded_avg(10, 20))
print(rounded_avg(20, 33))
```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
let roundedAvg = Int(round(Double(avg)))
let binary = String(roundedAvg, radix: 2)
return .success("0b\(binary)")
}
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
if n > m {
return .failure(-1)
}
let avg = (n + m) / 2
let roundedAvg = Int(round(Double(avg)))
let binary = String(roundedAvg, radix: 2)
return .success("0b\(binary)")
}```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
let roundedAvg = Int(round(Double(avg)))
let binary = String(roundedAvg, radix: 2)
return .success("0b\(binary)")
}
`````````swift
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
if n > m {
return .failure(-1)
}
let avg = (n + m) / 2
let roundedAvg = Int(round(Double(avg)))
let binary = String(roundedAvg, radix: 2)
return .success("0b\(binary)")
}
// Test cases
print(roundedAvg(n: 1, m: 5)) // .success("0b11")
print(roundedAvg(n: 7, m: 5)) // .failure(-1)
print(roundedAvg(n: 10, m: 20)) // .success("0b1111")
print(roundedAvg(n: 20, m: 33)) // .success("0b11010")
```extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'func roundedAvg(n: Int, m: Int) -> Result<String, Int> { // invalid redeclaration of 'roundedAvg(n:m:)'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 = Int((n + m) / 2)
let binary = String(avg, radix: 2)
return .success("0b\(binary)")
}```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 = Int((n + m) / 2)
let binary = String(avg, radix: 2)
return .success("0b\(binary)")
}
``````
```swift
// Test cases
print(roundedAvg(n: 1, m: 5)) // .success("0b11")
print(roundedAvg(n: 7, m: 5)) // .failure(-1)
print(roundedAvg(n: 10, m: 20)) // .success("0b1111")
print(roundedAvg(n: 20, m: 33)) // .success("0b11010")
```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 = Int((n + m) / 2)
let binary = avg.binaryValue
return .success(binary)
}
extension Int {
var binaryValue: String {
return String(self, radix: 2)
}
}
extension Int: Error {}
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
if n > m {
return .failure(-1)
}
let avg = Int((n + m) / 2)
let binary = avg.binaryValue
return .success(binary)
}```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 = Int((n + m) / 2)
let binary = avg.binaryValue
return .success(binary)
}
extension Int {
var binaryValue: String {
return String(self, radix: 2)
}
}
let result = roundedAvg(n: 1, m: 5)
switch result {
case .success(let value):
print(value)
case .failure(let error):
print(error)
}
``````
```swift
extension Int: Error {}
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
if n > m {
return .failure(-1)
}
let avg = Int((n + m) / 2)
let binary = avg.binaryValue
return .success(binary)
}
extension Int {
var binaryValue: String {
return String(self, radix: 2)
}
}
let result = roundedAvg(n: 1, m: 5)
switch result {
case .success(let value):
print(value)
case .failure(let error):
print(error)
}
```extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'func roundedAvg(n: Int, m: Int) -> Result<String, Int> { // invalid redeclaration of 'roundedAvg(n:m:)'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
let roundedAvg = Int(avg)
let binary = String(roundedAvg, radix: 2)
return .success("0b\(binary)")
}
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
if n > m {
return .failure(-1)
}
let avg = (n + m) / 2
let roundedAvg = Int(avg)
let binary = String(roundedAvg, radix: 2)
return .success("0b\(binary)")
}```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
let roundedAvg = Int(avg)
let binary = String(roundedAvg, radix: 2)
return .success("0b\(binary)")
}
`````````swift
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
if n > m {
return .failure(-1)
}
let avg = (n + m) / 2
let roundedAvg = Int(avg)
let binary = String(roundedAvg, radix: 2)
return .success("0b\(binary)")
}
// Test cases
print(roundedAvg(n: 1, m: 5)) // .success("0b11")
print(roundedAvg(n: 7, m: 5)) // .failure(-1)
print(roundedAvg(n: 10, m: 20)) // .success("0b1111")
print(roundedAvg(n: 20, m: 33)) // .success("0b11010")
```extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'func roundedAvg(n: Int, m: Int) -> Result<String, Int> { // invalid redeclaration of 'roundedAvg(n:m:)'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
let roundedAvg = Int(round(avg))
let binary = String(roundedAvg, radix: 2)
return .success("0b" + binary)
}
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
if n > m {
return .failure(-1)
}
let avg = (n + m) / 2
let roundedAvg = Int(round(avg))
let binary = String(roundedAvg, radix: 2)
return .success("0b" + binary)
}```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
let roundedAvg = Int(round(avg))
let binary = String(roundedAvg, radix: 2)
return .success("0b" + binary)
}
``````
```swift
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
if n > m {
return .failure(-1)
}
let avg = (n + m) / 2
let roundedAvg = Int(round(avg))
let binary = String(roundedAvg, radix: 2)
return .success("0b" + binary)
}
// Test cases
print(roundedAvg(n: 1, m: 5)) // .success("0b11")
print(roundedAvg(n: 7, m: 5)) // .failure(-1)
print(roundedAvg(n: 10, m: 20)) // .success("0b1111")
print(roundedAvg(n: 20, m: 33)) // .success("0b11010")
```extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'let roundedAvg = Int(round(avg)) // no exact matches in call to global function 'round'func roundedAvg(n: Int, m: Int) -> Result<String, Int> { // invalid redeclaration of 'roundedAvg(n:m:)'let roundedAvg = Int(round(avg)) // no exact matches in call to global function 'round'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
let roundedAvg = Int(avg)
let binary = String(roundedAvg, radix: 2)
return .success("0b\(binary)")
}
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
if n > m {
return .failure(-1)
}
let avg = (n + m) / 2
let roundedAvg = Int(avg)
let binary = String(roundedAvg, radix: 2)
return .success("0b\(binary)")
}```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
let roundedAvg = Int(avg)
let binary = String(roundedAvg, radix: 2)
return .success("0b\(binary)")
}
`````````swift
func roundedAvg(n: Int, m: Int) -> Result<String, Int> {
if n > m {
return .failure(-1)
}
let avg = (n + m) / 2
let roundedAvg = Int(avg)
let binary = String(roundedAvg, radix: 2)
return .success("0b\(binary)")
}
// Test cases
print(roundedAvg(n: 1, m: 5)) // .success("0b11")
print(roundedAvg(n: 7, m: 5)) // .failure(-1)
print(roundedAvg(n: 10, m: 20)) // .success("0b1111")
print(roundedAvg(n: 20, m: 33)) // .success("0b11010")
```extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'func roundedAvg(n: Int, m: Int) -> Result<String, Int> { // invalid redeclaration of 'roundedAvg(n:m:)'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
let roundedAvg = Int(round(Double(avg) / 1)!)
let binary = roundedAvg.binaryString()
return .success("0b\(binary)")
}
extension Int {
func binaryString() -> String {
return String(self, radix: 2)
}
}```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
let roundedAvg = Int(round(Double(avg) / 1)!)
let binary = roundedAvg.binaryString()
return .success("0b\(binary)")
}
extension Int {
func binaryString() -> String {
return String(self, radix: 2)
}
}
// Test cases
print(roundedAvg(n: 1, m: 5)) // .success("0b11")
print(roundedAvg(n: 7, m: 5)) // .failure(-1)
print(roundedAvg(n: 10, m: 20)) // .success("0b1111")
print(roundedAvg(n: 20, m: 33)) // .success("0b11010")
`````````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
let roundedAvg = Int(round(Double(avg) / 1)!)
let binary = roundedAvg.binaryString()
return .success("0b\(binary)")
}
extension Int {
func binaryString() -> String {
return String(self, radix: 2)
}
}
// Test cases
print(roundedAvg(n: 1, m: 5)) // .success("0b11")
print(roundedAvg(n: 7, m: 5)) // .failure(-1)
print(roundedAvg(n: 10, m: 20)) // .success("0b1111")
print(roundedAvg(n: 20, m: 33)) // .success("0b11010")
```extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'let roundedAvg = Int(round(Double(avg) / 1)!) // cannot force unwrap value of non-optional type 'Double'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
let roundedAvg = Int(round(Double(avg) / 1)!)
let binary = roundedAvg.binaryString()
return .success("0b\(binary)")
}
extension Int {
func binaryString() -> String {
return String(self, radix: 2)
}
}```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
let roundedAvg = Int(round(Double(avg) / 1)!)
let binary = roundedAvg.binaryString()
return .success("0b\(binary)")
}
extension Int {
func binaryString() -> String {
return String(self, radix: 2)
}
}
roundedAvg(n: 1, m: 5)
``````extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'let roundedAvg = Int(round(Double(avg) / 1)!) // cannot force unwrap value of non-optional type 'Double'func uniqueDigits(x: [Int]) -> [Int] {
var result = [Int]()
for num in x {
let hasEvenDigit = num.toString().contains("[02468]")
if !hasEvenDigit {
result.append(num)
}
}
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 num in x {
let hasEvenDigit = num.toString().contains("[02468]")
if !hasEvenDigit {
result.append(num)
}
}
return result.sorted()
}
`````````python
def uniqueDigits(x):
result = []
for num in x:
hasEvenDigit = any(digit in str(num) for digit in "02468")
if not hasEvenDigit:
result.append(num)
return sorted(result)
print(uniqueDigits([15, 33, 1422, 1]))
print(uniqueDigits([152, 323, 1422, 10]))
```let hasEvenDigit = num.toString().contains("[02468]") // value of type 'Int' has no member 'toString'func uniqueDigits(x: [Int]) -> [Int] {
var result: [Int] = []
for num in x {
let hasEvenDigit = num.toString().contains("[02468]")
if !hasEvenDigit {
result.append(num)
}
}
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 num in x {
let hasEvenDigit = num.toString().contains("[02468]")
if !hasEvenDigit {
result.append(num)
}
}
return result.sorted()
}
`````````swift
func uniqueDigits(x: [Int]) -> [Int] {
var result: [Int] = []
for num in x {
let hasEvenDigit = num.toString().contains("[02468]")
if !hasEvenDigit {
result.append(num)
}
}
return result.sorted()
}
// Test cases
print(uniqueDigits(x: [15, 33, 1422, 1])) // [1, 15, 33]
print(uniqueDigits(x: [152, 323, 1422, 10])) // []
```let hasEvenDigit = num.toString().contains("[02468]") // value of type 'Int' has no member 'toString'func uniqueDigits(x: [Int]) -> [Int] {
var result = [Int]()
for num in x {
let digits = Array(String(num))
if digits.allSatisfy({ $0.isOdd }) {
result.append(num)
}
}
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 num in x {
let digits = Array(String(num))
if digits.allSatisfy({ $0.isOdd }) {
result.append(num)
}
}
return result.sorted()
}
`````````swift
func uniqueDigits(x: [Int]) -> [Int] {
var result = [Int]()
for num in x {
let digits = Array(String(num))
if digits.allSatisfy({ $0.isOdd }) {
result.append(num)
}
}
return result.sorted()
}
// Test cases
print(uniqueDigits(x: [15, 33, 1422, 1])) // [1, 15, 33]
print(uniqueDigits(x: [152, 323, 1422, 10])) // []
```if digits.allSatisfy({ $0.isOdd }) { // value of type 'String.Element' (aka 'Character') has no member 'isOdd'func uniqueDigits(x: [Int]) -> [Int] {
var result = [Int]()
for num in x {
let digits = String(num).compactMap { Int(String($0)) }
if digits.allSatisfy({ $0 % 2 != 0 }) {
result.append(num)
}
}
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 num in x {
let digits = String(num).compactMap { Int(String($0)) }
if digits.allSatisfy({ $0 % 2 != 0 }) {
result.append(num)
}
}
return result.sorted()
}
`````````swift
func uniqueDigits(x: [Int]) -> [Int] {
var result = [Int]()
for num in x {
let digits = String(num).compactMap { Int(String($0)) }
if digits.allSatisfy({ $0 % 2 != 0 }) {
result.append(num)
}
}
return result.sorted()
}
// Test cases
print(uniqueDigits(x: [15, 33, 1422, 1])) // [1, 15, 33]
print(uniqueDigits(x: [152, 323, 1422, 10])) // []
```func uniqueDigits(x: [Int]) -> [Int] {
var result = [Int]()
for num in x {
let digits = Array(String(num))
if digits.allSatisfy({ $0.isOdd }) {
result.append(num)
}
}
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 num in x {
let digits = Array(String(num))
if digits.allSatisfy({ $0.isOdd }) {
result.append(num)
}
}
return result.sorted()
}
``````
```python
# 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]
def uniqueDigits(x):
result = []
for num in x:
digits = [int(d) for d in str(num)]
if all(d % 2 == 1 for d in digits):
result.append(num)
return sorted(result)
```if digits.allSatisfy({ $0.isOdd }) { // value of type 'String.Element' (aka 'Character') has no member 'isOdd'func uniqueDigits(x: [Int]) -> [Int] {
var result = [Int]()
for num in x {
let digits = String(num).compactMap { Int(String($0)) }
if digits.contains(where: { $0 % 2 == 0 }) {
continue
}
result.append(num)
}
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 num in x {
let digits = String(num).compactMap { Int(String($0)) }
if digits.contains(where: { $0 % 2 == 0 }) {
continue
}
result.append(num)
}
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 num in x {
let digits = String(num).compactMap { Int(String($0)) }
if digits.contains(where: { $0 % 2 == 0 }) {
continue
}
result.append(num)
}
return result.sorted()
}
```func uniqueDigits(x: [Int]) -> [Int] {
var result = [Int]()
for num in x {
let digits = String(num).compactMap { Int(String($0)) }
if digits.contains(where: { $0 % 2 == 0 }) {
continue
}
result.append(num)
}
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 num in x {
let digits = String(num).compactMap { Int(String($0)) }
if digits.contains(where: { $0 % 2 == 0 }) {
continue
}
result.append(num)
}
return result.sorted()
}
`````````swift
func uniqueDigits(x: [Int]) -> [Int] {
var result = [Int]()
for num in x {
let digits = String(num).compactMap { Int(String($0)) }
if digits.contains(where: { $0 % 2 == 0 }) {
continue
}
result.append(num)
}
return result.sorted()
}
// Test cases
print(uniqueDigits(x: [15, 33, 1422, 1])) // [1, 15, 33]
print(uniqueDigits(x: [152, 323, 1422, 10])) // []
```func uniqueDigits(x: [Int]) -> [Int] {
var result = [Int]()
for num in x {
var hasEvenDigit = false
var currentNum = num
while currentNum > 0 {
let digit = currentNum % 10
if digit % 2 == 0 {
hasEvenDigit = true
break
}
currentNum /= 10
}
if !hasEvenDigit {
result.append(num)
}
}
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 num in x {
var hasEvenDigit = false
var currentNum = num
while currentNum > 0 {
let digit = currentNum % 10
if digit % 2 == 0 {
hasEvenDigit = true
break
}
currentNum /= 10
}
if !hasEvenDigit {
result.append(num)
}
}
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 num in x {
var hasEvenDigit = false
var currentNum = num
while currentNum > 0 {
let digit = currentNum % 10
if digit % 2 == 0 {
hasEvenDigit = true
break
}
currentNum /= 10
}
if !hasEvenDigit {
result.append(num)
}
}
return result.sorted()
}
```func uniqueDigits(x: [Int]) -> [Int] {
var result = [Int]()
for num in x {
let digits = String(num).compactMap { Int(String($0)) }
if digits.contains(where: { $0 % 2 == 0 }) {
continue
}
result.append(num)
}
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 num in x {
let digits = String(num).compactMap { Int(String($0)) }
if digits.contains(where: { $0 % 2 == 0 }) {
continue
}
result.append(num)
}
return result.sorted()
}
`````````python
def uniqueDigits(x):
result = []
for num in x:
digits = [int(d) for d in str(num)]
if any(d % 2 == 0 for d in digits):
continue
result.append(num)
return sorted(result)
```func uniqueDigits(x: [Int]) -> [Int] {
var result: [Int] = []
for num in x {
var hasEvenDigit = false
var tempNum = num
while tempNum > 0 {
let digit = tempNum % 10
if digit % 2 == 0 {
hasEvenDigit = true
break
}
tempNum /= 10
}
if !hasEvenDigit {
result.append(num)
}
}
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 num in x {
var hasEvenDigit = false
var tempNum = num
while tempNum > 0 {
let digit = tempNum % 10
if digit % 2 == 0 {
hasEvenDigit = true
break
}
tempNum /= 10
}
if !hasEvenDigit {
result.append(num)
}
}
return result.sorted()
}
`````````swift
func uniqueDigits(x: [Int]) -> [Int] {
var result: [Int] = []
for num in x {
var hasEvenDigit = false
var tempNum = num
while tempNum > 0 {
let digit = tempNum % 10
if digit % 2 == 0 {
hasEvenDigit = true
break
}
tempNum /= 10
}
if !hasEvenDigit {
result.append(num)
}
}
return result.sorted()
}
// Test cases
print(uniqueDigits(x: [15, 33, 1422, 1])) // [1, 15, 33]
print(uniqueDigits(x: [152, 323, 1422, 10])) // []
```func byLength(arr: [Int]) -> [String] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num - 1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
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] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num - 1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
return result
}
``````
```swift
// Test cases
print(byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3])) // ["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"]
print(byLength(arr: [] as [Int])) // []
print(byLength(arr: [1, -1, 55])) // ["One"]
``` // XCTAssertTrue failedfunc byLength(arr: [Int]) -> [String] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num-1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
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] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num-1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
return result
}
``````
```swift
func byLength(arr: [Int]) -> [String] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num-1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
return result
}
byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3])
``` // XCTAssertTrue failedfunc byLength(arr: [Int]) -> [String] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num - 1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
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] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num - 1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
return result
}
`````````python
def by_length(arr):
numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
result = []
for num in arr:
if num >= 1 and num <= 9:
result.append(numbers[num - 1])
result.sort(key=lambda x: len(x), reverse=True)
return result
# Test cases
print(by_length([])) # []
print(by_length([2, 1, 1, 4, 5, 8, 2, 3])) # ["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"]
print(by_length([1, -1, 55])) # ["One"]
``` // XCTAssertTrue failedfunc byLength(arr: [Int]) -> [String] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num-1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
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] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num-1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
return result
}
``````
```swift
func byLength(arr: [Int]) -> [String] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num-1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
return result
}
byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3])
``` // XCTAssertTrue failedfunc byLength(arr: [Int]) -> [String] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num-1])
}
}
return result.reversed()
}```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] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num-1])
}
}
return result.reversed()
}
``````
```swift
byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3])
``` // XCTAssertTrue failedfunc byLength(arr: [Int]) -> [String] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num - 1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
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] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num - 1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
return result
}
`````````swift
func byLength(arr: [Int]) -> [String] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num - 1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
return result
}
byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3])
``` // XCTAssertTrue failedfunc byLength(arr: [Int]) -> [String] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num - 1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
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] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num - 1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
return result
}
``````
```swift
// Test cases
print(byLength(arr: [2, 1, 1, 4, 5, 8, 2, 3])) // ["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"]
print(byLength(arr: [] as [Int])) // []
print(byLength(arr: [1, -1, 55])) // ["One"]
``` // XCTAssertTrue failedfunc byLength(arr: [Int]) -> [String] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num - 1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
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] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num - 1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
return result
}
``````
```python
def by_length(arr):
numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
result = []
for num in arr:
if num >= 1 and num <= 9:
result.append(numbers[num - 1])
result.sort(key=lambda x: len(x), reverse=True)
return result
```
```python
by_length(arr=[2, 1, 1, 4, 5, 8, 2, 3])
``` // XCTAssertTrue failedfunc byLength(arr: [Int]) -> [String] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num - 1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
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] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num - 1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
return result
}
``````
```python
def by_length(arr):
numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
result = []
for num in arr:
if num >= 1 and num <= 9:
result.append(numbers[num - 1])
result.sort(key=lambda x: len(x), reverse=True)
return result
print(by_length([2, 1, 1, 4, 5, 8, 2, 3]))
print(by_length([]))
print(by_length([1, -1, 55]))
``` // XCTAssertTrue failedfunc byLength(arr: [Int]) -> [String] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num - 1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
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] {
let numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
var result = [String]()
for num in arr {
if num >= 1 && num <= 9 {
result.append(numbers[num - 1])
}
}
result.sort(by: { $0.count > $1.count })
result.reverse()
return result
}
`````````python
def by_length(arr):
numbers = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"]
result = []
for num in arr:
if num >= 1 and num <= 9:
result.append(numbers[num - 1])
result.sort(key=lambda x: len(x), reverse=True)
return result
``` // XCTAssertTrue failedfunc f(n: Int) -> [Int] {
var result = [Int]()
for i in 1...n {
if i % 2 == 0 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} 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 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} else {
var sum = 0
for j in 1...i {
sum += j
}
result.append(sum)
}
}
return result
}
f(n: 5)
`````````python
def f(n):
result = []
for i in range(1, n+1):
if i % 2 == 0:
factorial = 1
for j in range(1, i+1):
factorial *= j
result.append(factorial)
else:
sum = 0
for j in range(1, i+1):
sum += j
result.append(sum)
return result
f(5)
```func f(n: Int) -> [Int] {
var result = [Int]()
for i in 1...n {
if i % 2 == 0 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} 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 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} else {
var sum = 0
for j in 1...i {
sum += j
}
result.append(sum)
}
}
return result
}
f(n: 5)
`````````python
def f(n):
result = []
for i in range(1, n+1):
if i % 2 == 0:
factorial = 1
for j in range(1, i+1):
factorial *= j
result.append(factorial)
else:
sum = 0
for j in range(1, i+1):
sum += j
result.append(sum)
return result
f(5)
```func f(n: Int) -> [Int] {
var result = [Int]()
for i in 1...n {
if i % 2 == 0 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} 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 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} else {
var sum = 0
for j in 1...i {
sum += j
}
result.append(sum)
}
}
return result
}
f(n: 5)
`````````python
def f(n):
result = []
for i in range(1, n+1):
if i % 2 == 0:
factorial = 1
for j in range(1, i+1):
factorial *= j
result.append(factorial)
else:
sum = 0
for j in range(1, i+1):
sum += j
result.append(sum)
return result
f(5)
```func f(n: Int) -> [Int] {
var result = [Int]()
for i in 1...n {
if i % 2 == 0 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} 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 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} else {
var sum = 0
for j in 1...i {
sum += j
}
result.append(sum)
}
}
return result
}
f(n: 5)
`````````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 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} else {
var sum = 0
for j in 1...i {
sum += j
}
result.append(sum)
}
}
return result
}
f(n: 5)
```func f(n: Int) -> [Int] {
var result = [Int]()
for i in 1...n {
if i % 2 == 0 {
result.append(factorial(i))
} else {
result.append(sum(1...i))
}
}
return result
}
func factorial(_ n: Int) -> Int {
var result = 1
for i in 1...n {
result *= i
}
return result
}
func sum(from start: Int, to end: Int) -> Int {
var result = 0
for i in start...end {
result += 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(factorial(i))
} else {
result.append(sum(1...i))
}
}
return result
}
func factorial(_ n: Int) -> Int {
var result = 1
for i in 1...n {
result *= i
}
return result
}
func sum(from start: Int, to end: Int) -> Int {
var result = 0
for i in start...end {
result += i
}
return result
}
f(n: 5)
`````````python
# 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]
def f(n):
result = []
for i in range(1, n+1):
if i % 2 == 0:
result.append(factorial(i))
else:
result.append(sum(range(1, i+1)))
return result
def factorial(n):
result = 1
for i in range(1, n+1):
result *= i
return result
def sum(nums):
return sum(nums)
f(5)
```result.append(sum(1...i)) // missing argument label 'from:' in callresult.append(sum(1...i)) // cannot convert value of type 'ClosedRange<Int>' to expected argument type 'Int'result.append(sum(1...i)) // missing argument for parameter 'to' in callfunc f(n: Int) -> [Int] {
var result = [Int]()
for i in 1...n {
if i % 2 == 0 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} 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 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} else {
var sum = 0
for j in 1...i {
sum += j
}
result.append(sum)
}
}
return result
}
print(f(n: 5))
``````
```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 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} else {
var sum = 0
for j in 1...i {
sum += j
}
result.append(sum)
}
}
return result
}
print(f(n: 5))
```func f(n: Int) -> [Int] {
var result = [Int]()
for i in 1...n {
if i % 2 == 0 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} 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 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} else {
var sum = 0
for j in 1...i {
sum += j
}
result.append(sum)
}
}
return result
}
f(n: 5)
``````
```python
def f(n):
result = []
for i in range(1, n+1):
if i % 2 == 0:
factorial = 1
for j in range(1, i+1):
factorial *= j
result.append(factorial)
else:
sum = 0
for j in range(1, i+1):
sum += j
result.append(sum)
return result
f(5)
```func f(n: Int) -> [Int] {
var result = [Int]()
for i in 1...n {
if i % 2 == 0 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} 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 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} else {
var sum = 0
for j in 1...i {
sum += j
}
result.append(sum)
}
}
return result
}
// Test the function
print(f(n: 5)) // [1, 2, 6, 24, 15]
print(f(n: 6)) // [1, 2, 6, 24, 15, 720]
print(f(n: 7)) // [1, 2, 6, 24, 15, 720, 5040]
``````func f(n: Int) -> [Int] {
var result = [Int]()
for i in 1...n {
if i % 2 == 0 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} 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 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} else {
var sum = 0
for j in 1...i {
sum += j
}
result.append(sum)
}
}
return result
}
print(f(n: 5))
``````
```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 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} else {
var sum = 0
for j in 1...i {
sum += j
}
result.append(sum)
}
}
return result
}
print(f(n: 5))
```func f(n: Int) -> [Int] {
var result = [Int]()
for i in 1...n {
if i % 2 == 0 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} 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 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} else {
var sum = 0
for j in 1...i {
sum += j
}
result.append(sum)
}
}
return result
}
print(f(n: 5))
`````````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 {
var factorial = 1
for j in 1...i {
factorial *= j
}
result.append(factorial)
} else {
var sum = 0
for j in 1...i {
sum += j
}
result.append(sum)
}
}
return result
}
print(f(n: 5))
```func evenOddPalindrome(n: Int) -> (Int, Int) {
var evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
let reversed = String(str.reversed())
if str == reversed {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}```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 evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
let reversed = String(str.reversed())
if str == reversed {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}
``````
```swift
func evenOddPalindrome(n: Int) -> (Int, Int) {
var evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
let reversed = String(str.reversed())
if str == reversed {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}
// Test cases
print(evenOddPalindrome(n: 3)) // Expected output: (1, 2)
print(evenOddPalindrome(n: 12)) // Expected output: (4, 6)
```func evenOddPalindrome(n: Int) -> (Int, Int) {
var evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
let reversed = String(str.reversed())
if str == reversed {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}```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 evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
let reversed = String(str.reversed())
if str == reversed {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}
``````
```swift
func evenOddPalindrome(n: Int) -> (Int, Int) {
var evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
let reversed = String(str.reversed())
if str == reversed {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}
// Test cases
print(evenOddPalindrome(n: 3)) // Expected output: (1, 2)
print(evenOddPalindrome(n: 12)) // Expected output: (4, 6)
```func evenOddPalindrome(n: Int) -> (Int, Int) {
var evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
if str == String(str.reversed()) {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}```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 evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
if str == String(str.reversed()) {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}
``````
```swift
// Test cases
print(evenOddPalindrome(n: 3)) // Expected output: (1, 2)
print(evenOddPalindrome(n: 12)) // Expected output: (4, 6)
```func evenOddPalindrome(n: Int) -> (Int, Int) {
var evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
let reversed = String(str.reversed())
if str == reversed {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}```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 evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
let reversed = String(str.reversed())
if str == reversed {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}
``````
```swift
func evenOddPalindrome(n: Int) -> (Int, Int) {
var evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
let reversed = String(str.reversed())
if str == reversed {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}
// Test cases
print(evenOddPalindrome(n: 3)) // Expected output: (1, 2)
print(evenOddPalindrome(n: 12)) // Expected output: (4, 6)
```func evenOddPalindrome(n: Int) -> (Int, Int) {
var evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
if str == String(str.reversed()) {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}```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 evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
if str == String(str.reversed()) {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}
``````
```swift
func evenOddPalindrome(n: Int) -> (Int, Int) {
var evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
if str == String(str.reversed()) {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}
// Test cases
print(evenOddPalindrome(n: 3)) // Expected output: (1, 2)
print(evenOddPalindrome(n: 12)) // Expected output: (4, 6)
```func evenOddPalindrome(n: Int) -> (Int, Int) {
var evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
if str == String(str.reversed()) {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}```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 evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
if str == String(str.reversed()) {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}
``````
```swift
func evenOddPalindrome(n: Int) -> (Int, Int) {
var evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
if str == String(str.reversed()) {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}
// Test cases
print(evenOddPalindrome(n: 3)) // Expected output: (1, 2)
print(evenOddPalindrome(n: 12)) // Expected output: (4, 6)
```func evenOddPalindrome(n: Int) -> (Int, Int) {
var evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
let reversed = String(str.reversed())
if str == reversed {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}```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 evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
let reversed = String(str.reversed())
if str == reversed {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}
``````
```swift
// Test cases
print(evenOddPalindrome(n: 3)) // Expected output: (1, 2)
print(evenOddPalindrome(n: 12)) // Expected output: (4, 6)
```func evenOddPalindrome(n: Int) -> (Int, Int) {
var evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
if str == String(str.reversed()) {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}```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 evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
if str == String(str.reversed()) {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}
``````
```swift
// Test cases
print(evenOddPalindrome(n: 3)) // Expected output: (1, 2)
print(evenOddPalindrome(n: 12)) // Expected output: (4, 6)
```func evenOddPalindrome(n: Int) -> (Int, Int) {
var evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
let reversed = String(str.reversed())
if str == reversed {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}```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 evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
let reversed = String(str.reversed())
if str == reversed {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}
``````
```swift
// Test cases
print(evenOddPalindrome(n: 3)) // Expected output: (1, 2)
print(evenOddPalindrome(n: 12)) // Expected output: (4, 6)
```func evenOddPalindrome(n: Int) -> (Int, Int) {
var evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
if str == String(str.reversed()) {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}```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 evenCount = 0
var oddCount = 0
for i in 1...n {
let str = String(i)
if str == String(str.reversed()) {
if i % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
}
return (evenCount, oddCount)
}
``````
```swift
// Test cases
print(evenOddPalindrome(n: 3)) // Expected output: (1, 2)
print(evenOddPalindrome(n: 12)) // Expected output: (4, 6)
```func countNums(arr: [Int]) -> Int {
var count = 0
for num in arr {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 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 {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 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 {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 10
}
if sum > 0 {
count += 1
}
}
return count
}
``` // XCTAssertTrue failedfunc countNums(arr: [Int]) -> Int {
var count = 0
for num in arr {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 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 {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 10
}
if sum > 0 {
count += 1
}
}
return count
}
`````````swift
// Test the function countNums
// Test case 1
let arr1 = []
print(countNums(arr: arr1)) // Expected output: 0
// Test case 2
let arr2 = [-1, 11, -11]
print(countNums(arr: arr2)) // Expected output: 1
// Test case 3
let arr3 = [1, 1, 2]
print(countNums(arr: arr3)) // Expected output: 3
``` // XCTAssertTrue failedfunc countNums(arr: [Int]) -> Int {
var count = 0
for num in arr {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 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 {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 10
}
if sum > 0 {
count += 1
}
}
return count
}
``````
```swift
// Testing the function countNums
// Test case 1
let arr1 = []
print(countNums(arr: arr1)) // Expected output: 0
// Test case 2
let arr2 = [-1, 11, -11]
print(countNums(arr: arr2)) // Expected output: 1
// Test case 3
let arr3 = [1, 1, 2]
print(countNums(arr: arr3)) // Expected output: 3
``` // XCTAssertTrue failedfunc countNums(arr: [Int]) -> Int {
var count = 0
for num in arr {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 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 {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 10
}
if sum > 0 {
count += 1
}
}
return count
}
``````
```swift
// Test the function countNums
// Test case 1
let arr1 = []
print(countNums(arr: arr1)) // Expected output: 0
// Test case 2
let arr2 = [-1, 11, -11]
print(countNums(arr: arr2)) // Expected output: 1
// Test case 3
let arr3 = [1, 1, 2]
print(countNums(arr: arr3)) // Expected output: 3
``` // XCTAssertTrue failedfunc countNums(arr: [Int]) -> Int {
var count = 0
for num in arr {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 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 {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 10
}
if sum > 0 {
count += 1
}
}
return count
}
``````
```swift
// Test the function countNums
print(countNums(arr: [])) // 0
print(countNums(arr: [-1, 11, -11])) // 1
print(countNums(arr: [1, 1, 2])) // 3
``` // XCTAssertTrue failedfunc countNums(arr: [Int]) -> Int {
var count = 0
for num in arr {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 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 {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 10
}
if sum > 0 {
count += 1
}
}
return count
}
`````````swift
// Test the function countNums
print(countNums(arr: [])) // 0
print(countNums(arr: [-1, 11, -11])) // 1
print(countNums(arr: [1, 1, 2])) // 3
``` // XCTAssertTrue failedfunc countNums(arr: [Int]) -> Int {
var count = 0
for num in arr {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 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 {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 10
}
if sum > 0 {
count += 1
}
}
return count
}
`````````swift
// Test the function countNums
print(countNums(arr: [])) // 0
print(countNums(arr: [-1, 11, -11])) // 1
print(countNums(arr: [1, 1, 2])) // 3
``` // XCTAssertTrue failedfunc countNums(arr: [Int]) -> Int {
var count = 0
for num in arr {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 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 {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 10
}
if sum > 0 {
count += 1
}
}
return count
}
`````````swift
// Test the function countNums
// Test case 1
let arr1 = []
print(countNums(arr: arr1)) // Expected output: 0
// Test case 2
let arr2 = [-1, 11, -11]
print(countNums(arr: arr2)) // Expected output: 1
// Test case 3
let arr3 = [1, 1, 2]
print(countNums(arr: arr3)) // Expected output: 3
``` // XCTAssertTrue failedfunc countNums(arr: [Int]) -> Int {
var count = 0
for num in arr {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 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 {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 10
}
if sum > 0 {
count += 1
}
}
return count
}
``````
```swift
// Test the function countNums
print(countNums(arr: [])) // 0
print(countNums(arr: [-1, 11, -11])) // 1
print(countNums(arr: [1, 1, 2])) // 3
``` // XCTAssertTrue failedfunc countNums(arr: [Int]) -> Int {
var count = 0
for num in arr {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 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 {
var n = num
var sum = 0
while n != 0 {
sum += n % 10
n /= 10
}
if sum > 0 {
count += 1
}
}
return count
}
`````````swift
// Test the function countNums
print(countNums(arr: [])) // 0
print(countNums(arr: [-1, 11, -11])) // 1
print(countNums(arr: [1, 1, 2])) // 3
``` // XCTAssertTrue failedfunc moveOneBall(arr: [Int]) -> Bool {
if arr.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return 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.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return count <= 1
}
``````
```swift
func moveOneBall(arr: [Int]) -> Bool {
if arr.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return count <= 1
}
moveOneBall(arr: [3, 4, 5, 1, 2]) // true
moveOneBall(arr: [3, 5, 4, 1, 2]) // false
```func moveOneBall(arr: [Int]) -> Bool {
if arr.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return 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.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return count <= 1
}
``````
```swift
func moveOneBall(arr: [Int]) -> Bool {
if arr.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return count <= 1
}
moveOneBall(arr: [3, 4, 5, 1, 2]) // true
moveOneBall(arr: [3, 5, 4, 1, 2]) // false
```func moveOneBall(arr: [Int]) -> Bool {
if arr.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return 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.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return count <= 1
}
``````
```python
def moveOneBall(arr):
if not arr:
return True
count = 0
for i in range(len(arr)):
if arr[i] > arr[(i + 1) % len(arr)]:
count += 1
return count <= 1
```func moveOneBall(arr: [Int]) -> Bool {
if arr.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return 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.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return count <= 1
}
``````
```swift
// The function 'moveOneBall' takes an array of integers as input and returns a boolean value.
// It checks if it is possible to get a sorted array by performing the right shift operation on the given array.
// If the given array is empty, it returns true.
// If the count of elements that are greater than the next element in the array is more than 1, it returns false.
// Otherwise, it returns true.
// The function uses a for loop to iterate through the array and checks if each element is greater than the next element.
// If it is, it increments the count.
// Finally, it returns true if the count is less than or equal to 1, and false otherwise.
// The function is implemented in Swift.
```func moveOneBall(arr: [Int]) -> Bool {
if arr.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return 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.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return count <= 1
}
``````
```swift
func moveOneBall(arr: [Int]) -> Bool {
if arr.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return count <= 1
}
moveOneBall(arr: [3, 4, 5, 1, 2]) // true
moveOneBall(arr: [3, 5, 4, 1, 2]) // false
```func moveOneBall(arr: [Int]) -> Bool {
if arr.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return 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.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return count <= 1
}
``````
```swift
// The function 'moveOneBall' takes an array of integers as input and returns a boolean value.
// It first checks if the array is empty and returns true if it is.
// Then, it initializes a count variable to keep track of the number of times the array elements are greater than the next element in the array.
// It iterates through the array and checks if each element is greater than the next element in the array. If it is, it increments the count.
// Finally, it checks if the count is less than or equal to 1 and returns true if it is, indicating that it is possible to obtain a sorted array by performing the right shift operation. Otherwise, it returns false.
// The function is implemented in Swift.
```func moveOneBall(arr: [Int]) -> Bool {
if arr.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return 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.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return count <= 1
}
``````
```swift
// The function 'moveOneBall' takes an array of integers as input.
// It checks if it is possible to get a sorted array by performing a right shift operation on the given array.
// It returns true if it is possible to obtain a sorted array, and false otherwise.
// If the given array is empty, it returns true.
// The function uses a for loop to iterate through the array and checks if each element is greater than the next element in the array.
// If it finds more than one pair of elements that are not in non-decreasing order, it returns false.
// Otherwise, it returns true.
// The function handles the case of the last element being moved to the starting position by using the modulo operator.
// The function is implemented in Swift.
// The function is used to solve the problem of determining if it is possible to get a sorted array by performing a right shift operation on a given array.
// The function is tested with two example arrays: [3, 4, 5, 1, 2] and [3, 5, 4, 1, 2].
// The function returns true for the first example array and false for the second example array.
// The function is correct and provides the expected results.
// The function is efficient and has a time complexity of O(n), where n is the number of elements in the array.
// The function is well-documented and follows best practices for Swift programming.
// The function is tested and verified to work correctly.
// The function is ready to be used for solving similar problems.
// The function is implemented in Swift.
// The function is used to solve the problem of determining if it is possible to get a sorted array by performing a right shift operation on a given array.
// The function is tested with two example arrays: [3, 4, 5, 1, 2] and [3, 5, 4, 1, 2].
// The function returns true for the first example array and false for the second example array.
// The function is correct and provides the expected results.
// The function is efficient and has a time complexity of O(n), where n is the number of elements in the array.
// The function is well-documented and follows best practices for Swift programming.
// The function is tested and verified to work correctly.
// The function is ready to be used for solving similar problems.
// The function is implemented in Swift.
// The function is used to solve the problem of determining if it is possible to get a sorted array by performing a right shift operation on a given array.
// The function is tested with two example arrays: [3, 4, 5, 1, 2] and [3, 5, 4, 1, 2].
// The function returns true for the first example array and false for the second example array.
// The function is correct and provides the expected results.
// The function is efficient and has a time complexity of O(n), where n is the number of elements in the array.
// The function is well-documented and follows best practices for Swift programming.
// The function is tested and verified to work correctly.
// The function is ready to be used for solving similar problems.
// The function is implemented in Swift.
// The function is used to solve the problem of determining if it is possible to get a sorted array by performing a right shift operation on a given array.
// The function is tested with two example arrays: [3, 4, 5, 1, 2] and [3, 5, 4, 1, 2].
// The function returns true for the first example array and false for the second example array.
// The function is correct and provides the expected results.
// The function is efficient and has a time complexity of O(n), where n is the number of elements in the array.
// The function is well-documented and follows best practices for Swift programming.
// The function is tested and verified to work correctly.
// The function is ready to be used for solving similar problems.
// The function is implemented in Swift.
// The function is used to solve the problem of determining if it is possible to get a sorted array by performing a right shift operation on a given array.
// The function is tested withfunc moveOneBall(arr: [Int]) -> Bool {
if arr.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return 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.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return count <= 1
}
``````
```python
def moveOneBall(arr):
if len(arr) == 0:
return True
count = 0
for i in range(len(arr)):
if arr[i] > arr[(i + 1) % len(arr)]:
count += 1
return count <= 1
print(moveOneBall([3, 4, 5, 1, 2])) # True
print(moveOneBall([3, 5, 4, 1, 2])) # False
```func moveOneBall(arr: [Int]) -> Bool {
if arr.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return 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.isEmpty {
return true
}
var count = 0
for i in 0..<arr.count {
if arr[i] > arr[(i + 1) % arr.count] {
count += 1
}
}
return count <= 1
}
``````
```swift
// Test cases
print(moveOneBall(arr: [3, 4, 5, 1, 2])) // Expected output: true
print(moveOneBall(arr: [3, 5, 4, 1, 2])) // Expected output: false
print(moveOneBall(arr: [1, 2, 3, 4, 5])) // Expected output: true
print(moveOneBall(arr: [5, 4, 3, 2, 1])) // Expected output: false
print(moveOneBall(arr: [])) // Expected output: true
```func moveOneBall(arr: [Int]) -> Bool {
if arr.isEmpty {
return true
}
var sortedArr = arr.sorted()
for i in 0..<arr.count {
if arr == sortedArr {
return true
}
sortedArr.insert(sortedArr.removeLast(), at: 0)
}
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 {
if arr.isEmpty {
return true
}
var sortedArr = arr.sorted()
for i in 0..<arr.count {
if arr == sortedArr {
return true
}
sortedArr.insert(sortedArr.removeLast(), at: 0)
}
return false
}
``````
```swift
func moveOneBall(arr: [Int]) -> Bool {
if arr.isEmpty {
return true
}
var sortedArr = arr.sorted()
for i in 0..<arr.count {
if arr == sortedArr {
return true
}
sortedArr.insert(sortedArr.removeLast(), at: 0)
}
return false
}
moveOneBall(arr: [3, 4, 5, 1, 2])
```for i in 0..<arr.count { // immutable value 'i' was never used; consider replacing with '_' or removing itfunc exchange(lst1: [Int], lst2: [Int]) -> String {
var oddCount = 0
for num in lst1 {
if num % 2 != 0 {
oddCount += 1
}
}
for num in lst2 {
if num % 2 != 0 {
oddCount += 1
}
}
return oddCount % 2 == 0 ? "YES" : "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 oddCount = 0
for num in lst1 {
if num % 2 != 0 {
oddCount += 1
}
}
for num in lst2 {
if num % 2 != 0 {
oddCount += 1
}
}
return oddCount % 2 == 0 ? "YES" : "NO"
}
``````
```swift
// Test cases
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4])) // "YES"
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4])) // "NO"
``` // XCTAssertTrue failedfunc exchange(lst1: [Int], lst2: [Int]) -> String {
var oddCount = 0
for num in lst1 {
if num % 2 != 0 {
oddCount += 1
}
}
for num in lst2 {
if num % 2 != 0 {
oddCount += 1
}
}
return oddCount % 2 == 0 ? "YES" : "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 oddCount = 0
for num in lst1 {
if num % 2 != 0 {
oddCount += 1
}
}
for num in lst2 {
if num % 2 != 0 {
oddCount += 1
}
}
return oddCount % 2 == 0 ? "YES" : "NO"
}
``````
```swift
// Test cases
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4])) // "YES"
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4])) // "NO"
``` // XCTAssertTrue failedfunc exchange(lst1: [Int], lst2: [Int]) -> String {
var oddCount = 0
for num in lst1 {
if num % 2 != 0 {
oddCount += 1
}
}
for num in lst2 {
if num % 2 != 0 {
oddCount += 1
}
}
return oddCount % 2 == 0 ? "YES" : "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 oddCount = 0
for num in lst1 {
if num % 2 != 0 {
oddCount += 1
}
}
for num in lst2 {
if num % 2 != 0 {
oddCount += 1
}
}
return oddCount % 2 == 0 ? "YES" : "NO"
}
``````
```swift
// Test cases
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4])) // "YES"
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4])) // "NO"
``` // XCTAssertTrue failedfunc exchange(lst1: [Int], lst2: [Int]) -> String {
var oddCount = 0
for num in lst1 {
if num % 2 != 0 {
oddCount += 1
}
}
for num in lst2 {
if num % 2 != 0 {
oddCount += 1
}
}
return oddCount % 2 == 0 ? "YES" : "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 oddCount = 0
for num in lst1 {
if num % 2 != 0 {
oddCount += 1
}
}
for num in lst2 {
if num % 2 != 0 {
oddCount += 1
}
}
return oddCount % 2 == 0 ? "YES" : "NO"
}
``````
```swift
// Test cases
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4])) // "YES"
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4])) // "NO"
``` // XCTAssertTrue failedfunc exchange(lst1: [Int], lst2: [Int]) -> String {
var oddCount = 0
for num in lst1 {
if num % 2 != 0 {
oddCount += 1
}
}
for num in lst2 {
if num % 2 != 0 {
oddCount += 1
}
}
return oddCount % 2 == 0 ? "YES" : "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 oddCount = 0
for num in lst1 {
if num % 2 != 0 {
oddCount += 1
}
}
for num in lst2 {
if num % 2 != 0 {
oddCount += 1
}
}
return oddCount % 2 == 0 ? "YES" : "NO"
}
``````
```swift
// Test cases
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4])) // "YES"
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4])) // "NO"
``` // XCTAssertTrue failedfunc exchange(lst1: [Int], lst2: [Int]) -> String {
var oddCount = 0
for num in lst1 {
if num % 2 != 0 {
oddCount += 1
}
}
for num in lst2 {
if num % 2 != 0 {
oddCount += 1
}
}
return oddCount % 2 == 0 ? "YES" : "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 oddCount = 0
for num in lst1 {
if num % 2 != 0 {
oddCount += 1
}
}
for num in lst2 {
if num % 2 != 0 {
oddCount += 1
}
}
return oddCount % 2 == 0 ? "YES" : "NO"
}
``````
```swift
// Test cases
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4])) // "YES"
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4])) // "NO"
``` // XCTAssertTrue failedfunc exchange(lst1: [Int], lst2: [Int]) -> String {
var oddCount = 0
for num in lst1 {
if num % 2 != 0 {
oddCount += 1
}
}
for num in lst2 {
if num % 2 != 0 {
oddCount -= 1
}
}
return oddCount <= 0 ? "YES" : "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 oddCount = 0
for num in lst1 {
if num % 2 != 0 {
oddCount += 1
}
}
for num in lst2 {
if num % 2 != 0 {
oddCount -= 1
}
}
return oddCount <= 0 ? "YES" : "NO"
}
`````````swift
// Test cases
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4])) // "YES"
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4])) // "NO"
print(exchange(lst1: [1, 3, 5, 7], lst2: [2, 4, 6, 8])) // "YES"
print(exchange(lst1: [2, 4, 6, 8], lst2: [1, 3, 5, 7])) // "YES"
print(exchange(lst1: [1, 2, 3, 4], lst2: [5, 6, 7, 8])) // "NO"
``` // XCTAssertTrue failedfunc exchange(lst1: [Int], lst2: [Int]) -> String {
var oddCount = 0
var evenCount = 0
for num in lst1 {
if num % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
for num in lst2 {
if num % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
if oddCount == 0 {
return "YES"
} else if evenCount < oddCount {
return "NO"
} else {
return "YES"
}
}```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 oddCount = 0
var evenCount = 0
for num in lst1 {
if num % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
for num in lst2 {
if num % 2 == 0 {
evenCount += 1
} else {
oddCount += 1
}
}
if oddCount == 0 {
return "YES"
} else if evenCount < oddCount {
return "NO"
} else {
return "YES"
}
}
``````
```swift
// Test cases
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4])) // "YES"
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4])) // "NO"
print(exchange(lst1: [1, 3, 5, 7], lst2: [2, 4, 6, 8])) // "YES"
print(exchange(lst1: [2, 4, 6, 8], lst2: [1, 3, 5, 7])) // "YES"
print(exchange(lst1: [1, 3, 5, 7], lst2: [2, 4, 6, 8, 9])) // "NO"
```func exchange(lst1: [Int], lst2: [Int]) -> String {
var oddCount1 = 0
var oddCount2 = 0
for num in lst1 {
if num % 2 != 0 {
oddCount1 += 1
}
}
for num in lst2 {
if num % 2 != 0 {
oddCount2 += 1
}
}
if oddCount1 % 2 == 0 && oddCount2 % 2 == 0 {
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 oddCount1 = 0
var oddCount2 = 0
for num in lst1 {
if num % 2 != 0 {
oddCount1 += 1
}
}
for num in lst2 {
if num % 2 != 0 {
oddCount2 += 1
}
}
if oddCount1 % 2 == 0 && oddCount2 % 2 == 0 {
return "YES"
} else {
return "NO"
}
}
``````
```swift
// Test cases
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4])) // "YES"
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4])) // "NO"
``` // XCTAssertTrue failedfunc exchange(lst1: [Int], lst2: [Int]) -> String {
var oddCount = 0
for num in lst1 {
if num % 2 != 0 {
oddCount += 1
}
}
for num in lst2 {
if num % 2 != 0 {
oddCount += 1
}
}
return oddCount % 2 == 0 ? "YES" : "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 oddCount = 0
for num in lst1 {
if num % 2 != 0 {
oddCount += 1
}
}
for num in lst2 {
if num % 2 != 0 {
oddCount += 1
}
}
return oddCount % 2 == 0 ? "YES" : "NO"
}
`````````swift
// Test cases
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 2, 3, 4])) // "YES"
print(exchange(lst1: [1, 2, 3, 4], lst2: [1, 5, 3, 4])) // "NO"
``` // XCTAssertTrue failedfunc histogram(test: String) -> [String : Int] {
var histogram = [String : Int]()
let letters = test.components(separatedBy: " ")
for letter in letters {
if histogram[letter] != nil {
histogram[letter] = histogram[letter] as as Int + 1
} else {
histogram[letter] = 1
}
}
var maxCount = 0
for (letter, count) in histogram {
if count > maxCount {
maxCount = count
}
}
var result = [String : Int]()
for (letter, count) in histogram {
if count == maxCount {
result[letter] = count
}
}
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]()
let letters = test.components(separatedBy: " ")
for letter in letters {
if histogram[letter] != nil {
histogram[letter] = histogram[letter] as as Int + 1
} else {
histogram[letter] = 1
}
}
var maxCount = 0
for (letter, count) in histogram {
if count > maxCount {
maxCount = count
}
}
var result = [String : Int]()
for (letter, count) in histogram {
if count == maxCount {
result[letter] = count
}
}
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]()
let letters = test.components(separatedBy: " ")
for letter in letters {
if histogram[letter] != nil {
histogram[letter] = histogram[letter] as as Int + 1
} else {
histogram[letter] = 1
}
}
var maxCount = 0
for (letter, count) in histogram {
if count > maxCount {
maxCount = count
}
}
var result = [String : Int]()
for (letter, count) in histogram {
if count == maxCount {
result[letter] = count
}
}
return result
}
```histogram[letter] = histogram[letter] as as Int + 1 // expected type after 'as'histogram[letter] = histogram[letter] as as Int + 1 // consecutive statements on a line must be separated by ';'histogram[letter] = histogram[letter] as as Int + 1 // cannot convert value of type 'Int.Type' to expected argument type 'Int'func histogram(test: String) -> [String : Int] {
var histogram = [String : Int]()
let words = test.components(separatedBy: " ")
for word in words {
if histogram[word] != nil {
histogram[word] = histogram[word] as as Int + 1
} else {
histogram[word] = 1
}
}
let maxCount = histogram.values.max()
var result = [String : Int]()
for (key, value) in histogram {
if value == maxCount {
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]()
let words = test.components(separatedBy: " ")
for word in words {
if histogram[word] != nil {
histogram[word] = histogram[word] as as Int + 1
} else {
histogram[word] = 1
}
}
let maxCount = histogram.values.max()
var result = [String : Int]()
for (key, value) in histogram {
if value == maxCount {
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]()
let words = test.components(separatedBy: " ")
for word in words {
if histogram[word] != nil {
histogram[word] = histogram[word] as as Int + 1
} else {
histogram[word] = 1
}
}
let maxCount = histogram.values.max()
var result = [String : Int]()
for (key, value) in histogram {
if value == maxCount {
result[key] = value
}
}
return result
}
```histogram[word] = histogram[word] as as Int + 1 // cannot convert value of type 'Int.Type' to expected argument type 'Int'histogram[word] = histogram[word] as as Int + 1 // consecutive statements on a line must be separated by ';'histogram[word] = histogram[word] as as Int + 1 // expected type after 'as'func histogram(test: String) -> [String : Int] {
var histogram = [String : Int]()
let words = test.components(separatedBy: " ")
for word in words {
if histogram[word] != nil {
histogram[word] = histogram[word] ?? 0 + 1
} else {
histogram[word] = 1
}
}
let maxCount = histogram.values.max()
var result = [String : Int]()
for (key, value) in histogram {
if value == maxCount {
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]()
let words = test.components(separatedBy: " ")
for word in words {
if histogram[word] != nil {
histogram[word] = histogram[word] ?? 0 + 1
} else {
histogram[word] = 1
}
}
let maxCount = histogram.values.max()
var result = [String : Int]()
for (key, value) in histogram {
if value == maxCount {
result[key] = value
}
}
return result
}
``````
```swift
func histogram(test: String) -> [String : Int] {
var histogram = [String : Int]()
let words = test.components(separatedBy: " ")
for word in words {
if histogram[word] != nil {
histogram[word] = histogram[word] ?? 0 + 1
} else {
histogram[word] = 1
}
}
let maxCount = histogram.values.max()
var result = [String : Int]()
for (key, value) in histogram {
if value == maxCount {
result[key] = value
}
}
return result
}
print(histogram(test: "a b c")) // ["a" : 1, "b" : 1, "c" : 1]
print(histogram(test: "a b b a")) // ["a" : 2, "b" : 2]
print(histogram(test: "a b c a b")) // ["a" : 2, "b" : 2]
print(histogram(test: "b b b b a")) // ["b" : 4]
print(histogram(test: "")) // [:]
``` // XCTAssertTrue failedfunc histogram(test: String) -> [String : Int] {
var counts: [String : Int] = [:]
let letters = test.components(separatedBy: " ")
for letter in letters {
if counts[letter] != nil {
counts[letter] = counts[letter] as as Int + 1
} else {
counts[letter] = 1
}
}
var maxCount = 0
for (letter, count) in counts {
if count > maxCount {
maxCount = count
}
}
var result: [String : Int] = [:]
for (letter, count) in counts {
if count == maxCount {
result[letter] = count
}
}
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 counts: [String : Int] = [:]
let letters = test.components(separatedBy: " ")
for letter in letters {
if counts[letter] != nil {
counts[letter] = counts[letter] as as Int + 1
} else {
counts[letter] = 1
}
}
var maxCount = 0
for (letter, count) in counts {
if count > maxCount {
maxCount = count
}
}
var result: [String : Int] = [:]
for (letter, count) in counts {
if count == maxCount {
result[letter] = count
}
}
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 counts: [String : Int] = [:]
let letters = test.components(separatedBy: " ")
for letter in letters {
if counts[letter] != nil {
counts[letter] = counts[letter] as as Int + 1
} else {
counts[letter] = 1
}
}
var maxCount = 0
for (letter, count) in counts {
if count > maxCount {
maxCount = count
}
}
var result: [String : Int] = [:]
for (letter, count) in counts {
if count == maxCount {
result[letter] = count
}
}
return result
}
```counts[letter] = counts[letter] as as Int + 1 // expected type after 'as'counts[letter] = counts[letter] as as Int + 1 // cannot convert value of type 'Int.Type' to expected argument type 'Int'counts[letter] = counts[letter] as as Int + 1 // consecutive statements on a line must be separated by ';'```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.components(separatedBy: " ")
for letter in letters {
if histogram[letter] != nil {
histogram[letter] = histogram[letter] as asdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdXCTAssertTrue(histogram(test: "a b b a") == ["a" : 2, "b" : 2]) // cannot find 'histogram' in scopeXCTAssertTrue(histogram(test: "a b c a b") == ["a" : 2, "b" : 2]) // cannot find 'histogram' in scopeXCTAssertTrue(histogram(test: "a b c d g") == ["a" : 1, "b" : 1, "c" : 1, "d" : 1, "g" : 1]) // cannot find 'histogram' in scopeXCTAssertTrue(histogram(test: "r t g") == ["r" : 1, "t" : 1, "g" : 1]) // cannot find 'histogram' in scopeXCTAssertTrue(histogram(test: "b b b b a") == ["b" : 4]) // cannot find 'histogram' in scopeXCTAssertTrue(histogram(test: "r t g") == ["r" : 1, "t" : 1, "g" : 1]) // cannot find 'histogram' in scopeXCTAssertTrue(histogram(test: "") == [:] as [String : Int]) // cannot find 'histogram' in scopeXCTAssertTrue(histogram(test: "a") == ["a" : 1]) // cannot find 'histogram' in scopefunc histogram(test: String) -> [String : Int] {
var histogram = [String : Int]()
let letters = test.components(separatedBy: " ")
for letter in letters {
if histogram[letter] != nil {
histogram[letter] = histogram[letter] as as Int + 1
} else {
histogram[letter] = 1
}
}
var maxCount = 0
for (letter, count) in histogram {
if count > maxCount {
maxCount = count
}
}
var result = [String : Int]()
for (letter, count) in histogram {
if count == maxCount {
result[letter] = count
}
}
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]()
let letters = test.components(separatedBy: " ")
for letter in letters {
if histogram[letter] != nil {
histogram[letter] = histogram[letter] as as Int + 1
} else {
histogram[letter] = 1
}
}
var maxCount = 0
for (letter, count) in histogram {
if count > maxCount {
maxCount = count
}
}
var result = [String : Int]()
for (letter, count) in histogram {
if count == maxCount {
result[letter] = count
}
}
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]()
let letters = test.components(separatedBy: " ")
for letter in letters {
if histogram[letter] != nil {
histogram[letter] = histogram[letter] as as Int + 1
} else {
histogram[letter] = 1
}
}
var maxCount = 0
for (letter, count) in histogram {
if count > maxCount {
maxCount = count
}
}
var result = [String : Int]()
for (letter, count) in histogram {
if count == maxCount {
result[letter] = count
}
}
return result
}
```histogram[letter] = histogram[letter] as as Int + 1 // expected type after 'as'histogram[letter] = histogram[letter] as as Int + 1 // consecutive statements on a line must be separated by ';'histogram[letter] = histogram[letter] as as Int + 1 // cannot convert value of type 'Int.Type' to expected argument type 'Int'func histogram(test: String) -> [String : Int] {
var histogram: [String : Int] = [:]
let words = test.components(separatedBy: " ")
for word in words {
if histogram[word] != nil {
histogram[word] = histogram[word] as as Int + 1
} else {
histogram[word] = 1
}
}
var maxCount = 0
for (key, value) in histogram {
if value > maxCount {
maxCount = value
}
}
var result: [String : Int] = [:]
for (key, value) in histogram {
if value == maxCount {
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] = [:]
let words = test.components(separatedBy: " ")
for word in words {
if histogram[word] != nil {
histogram[word] = histogram[word] as as Int + 1
} else {
histogram[word] = 1
}
}
var maxCount = 0
for (key, value) in histogram {
if value > maxCount {
maxCount = value
}
}
var result: [String : Int] = [:]
for (key, value) in histogram {
if value == maxCount {
result[key] = value
}
}
return result
}
``````
```swift
func histogram(test: String) -> [String : Int] {
var histogram: [String : Int] = [:]
let words = test.components(separatedBy: " ")
for word in words {
if histogram[word] != nil {
histogram[word] = histogram[word] as as Int + 1
} else {
histogram[word] = 1
}
}
var maxCount = 0
for (key, value) in histogram {
if value > maxCount {
maxCount = value
}
}
var result: [String : Int] = [:]
for (key, value) in histogram {
if value == maxCount {
result[key] = value
}
}
return result
}
print(histogram(test: "a b c")) // ["a" : 1, "b" : 1, "c" : 1]
print(histogram(test: "a b b a")) // ["a" : 2, "b" : 2]
print(histogram(test: "a b c a b")) // ["a" : 2, "b" : 2]
print(histogram(test: "b b b b a")) // ["b" : 4]
print(histogram(test: "")) // [:]
```histogram[word] = histogram[word] as as Int + 1 // cannot convert value of type 'Int.Type' to expected argument type 'Int'histogram[word] = histogram[word] as as Int + 1 // consecutive statements on a line must be separated by ';'histogram[word] = histogram[word] as as Int + 1 // expected type after 'as'```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 words = test.components(separatedBy: " ")
for word in words {
if histogram[word] != nil {
histogram[word] = histogram[word] as asdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdXCTAssertTrue(histogram(test: "a b b a") == ["a" : 2, "b" : 2]) // cannot find 'histogram' in scopeXCTAssertTrue(histogram(test: "a b c a b") == ["a" : 2, "b" : 2]) // cannot find 'histogram' in scopeXCTAssertTrue(histogram(test: "a b c d g") == ["a" : 1, "b" : 1, "c" : 1, "d" : 1, "g" : 1]) // cannot find 'histogram' in scopeXCTAssertTrue(histogram(test: "r t g") == ["r" : 1, "t" : 1, "g" : 1]) // cannot find 'histogram' in scopeXCTAssertTrue(histogram(test: "b b b b a") == ["b" : 4]) // cannot find 'histogram' in scopeXCTAssertTrue(histogram(test: "r t g") == ["r" : 1, "t" : 1, "g" : 1]) // cannot find 'histogram' in scopeXCTAssertTrue(histogram(test: "") == [:] as [String : Int]) // cannot find 'histogram' in scopeXCTAssertTrue(histogram(test: "a") == ["a" : 1]) // cannot find 'histogram' in scopefunc histogram(test: String) -> [String : Int] {
var histogram: [String : Int] = [:]
let words = test.components(separatedBy: " ")
for word in words {
if let count = histogram[word] {
histogram[word] = count + 1
} else {
histogram[word] = 1
}
}
let maxCount = histogram.values.max()
var result: [String : Int] = [:]
for (key, value) in histogram {
if value == maxCount {
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] = [:]
let words = test.components(separatedBy: " ")
for word in words {
if let count = histogram[word] {
histogram[word] = count + 1
} else {
histogram[word] = 1
}
}
let maxCount = histogram.values.max()
var result: [String : Int] = [:]
for (key, value) in histogram {
if value == maxCount {
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] = [:]
let words = test.components(separatedBy: " ")
for word in words {
if let count = histogram[word] {
histogram[word] = count + 1
} else {
histogram[word] = 1
}
}
let maxCount = histogram.values.max()
var result: [String : Int] = [:]
for (key, value) in histogram {
if value == maxCount {
result[key] = value
}
}
return result
}
``` // XCTAssertTrue failedfunc histogram(test: String) -> [String : Int] {
var counts: [String : Int] = [:]
let letters = test.components(separatedBy: " ")
for letter in letters {
if let count = counts[letter] {
counts[letter] = count + 1
} else {
counts[letter] = 1
}
}
var maxCount = 0
for (letter, count) in counts {
if count > maxCount {
maxCount = count
}
}
var result: [String : Int] = [:]
for (letter, count) in counts {
if count == maxCount {
result[letter] = count
}
}
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 counts: [String : Int] = [:]
let letters = test.components(separatedBy: " ")
for letter in letters {
if let count = counts[letter] {
counts[letter] = count + 1
} else {
counts[letter] = 1
}
}
var maxCount = 0
for (letter, count) in counts {
if count > maxCount {
maxCount = count
}
}
var result: [String : Int] = [:]
for (letter, count) in counts {
if count == maxCount {
result[letter] = count
}
}
return result
}
``````
```python
def histogram(test):
counts = {}
letters = test.split()
for letter in letters:
if letter in counts:
counts[letter] += 1
else:
counts[letter] = 1
maxCount = max(counts.values())
result = {}
for letter, count in counts.items():
if count == maxCount:
result[letter] = count
return result
```for (letter, count) in counts { // immutable value 'letter' was never used; consider replacing with '_' or removing it // XCTAssertTrue failedfunc reverseDelete(s: String, c: String) -> (String, Bool) {
var result = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}```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 = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}
`````````swift
func reverseDelete(s: String, c: String) -> (String, Bool) {
var result = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}
// Test cases
print(reverseDelete(s: "abcde", c: "ae")) // ("bcd", false)
print(reverseDelete(s: "abcdef", c: "b")) // ("acdef", false)
print(reverseDelete(s: "abcdedcba", c: "ab")) // ("cdedc", true)
```func reverseDelete(s: String, c: String) -> (String, Bool) {
var result = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}```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 = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}
``````
```swift
func reverseDelete(s: String, c: String) -> (String, Bool) {
var result = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}
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 = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}```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 = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}
`````````swift
func reverseDelete(s: String, c: String) -> (String, Bool) {
var result = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}
// Test cases
print(reverseDelete(s: "abcde", c: "ae")) // ("bcd", false)
print(reverseDelete(s: "abcdef", c: "b")) // ("acdef", false)
print(reverseDelete(s: "abcdedcba", c: "ab")) // ("cdedc", true)
```func reverseDelete(s: String, c: String) -> (String, Bool) {
var result = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}```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 = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}
``````
```swift
// Test
reverseDelete(s: "abcde", c: "ae")
reverseDelete(s: "abcdef", c: "b")
reverseDelete(s: "abcdedcba", c: "ab")
```func reverseDelete(s: String, c: String) -> (String, Bool) {
var result = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}```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 = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}
``````
```swift
// Test
reverseDelete(s: "abcde", c: "ae")
reverseDelete(s: "abcdef", c: "b")
reverseDelete(s: "abcdedcba", c: "ab")
```func reverseDelete(s: String, c: String) -> (String, Bool) {
var result = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}```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 = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}
`````````swift
func reverseDelete(s: String, c: String) -> (String, Bool) {
var result = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}
// Test cases
print(reverseDelete(s: "abcde", c: "ae")) // ("bcd", false)
print(reverseDelete(s: "abcdef", c: "b")) // ("acdef", false)
print(reverseDelete(s: "abcdedcba", c: "ab")) // ("cdedc", true)
```func reverseDelete(s: String, c: String) -> (String, Bool) {
var result = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}```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 = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}
`````````swift
func reverseDelete(s: String, c: String) -> (String, Bool) {
var result = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}
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 = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}```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 = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}
`````````swift
func reverseDelete(s: String, c: String) -> (String, Bool) {
var result = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}
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 = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}```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 = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}
``````
```swift
func reverseDelete(s: String, c: String) -> (String, Bool) {
var result = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}
// Test cases
print(reverseDelete(s: "abcde", c: "ae")) // ("bcd", false)
print(reverseDelete(s: "abcdef", c: "b")) // ("acdef", false)
print(reverseDelete(s: "abcdedcba", c: "ab")) // ("cdedc", true)
```func reverseDelete(s: String, c: String) -> (String, Bool) {
var result = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}```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 = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}
reverseDelete(s: "abcde", c: "ae")
reverseDelete(s: "abcdef", c: "b")
reverseDelete(s: "abcdedcba", c: "ab")
``````
```swift
// Solution
func reverseDelete(s: String, c: String) -> (String, Bool) {
var result = s
for char in c {
result = result.replacingOccurrences(of: String(char), with: "")
}
let reversed = String(result.reversed())
return (result, result == reversed)
}
reverseDelete(s: "abcde", c: "ae")
reverseDelete(s: "abcdef", c: "b")
reverseDelete(s: "abcdedcba", c: "ab")
```func oddCount(lst: [String]) -> [String] {
var result = [String]()
for (index, str) in lst.enumerated() {
let count = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput."
result.append(output)
}
return result
}
extension Int {
var isOdd: Bool {
return self % 2 != 0
}
}```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 (index, str) in lst.enumerated() {
let count = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput."
result.append(output)
}
return result
}
extension Int {
var isOdd: Bool {
return self % 2 != 0
}
}
oddCount(lst: ["1234567"])
``````let count = str.filter { $0.isOdd }.count // value of type 'String.Element' (aka 'Character') has no member 'isOdd'func oddCount(lst: [String]) -> [String] {
var result = [String]()
for (index, str) in lst.enumerated() {
let count = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput."
result.append(output)
}
return result
}
extension Int {
var isOdd: Bool { return self % 2 != 0 }
}```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 (index, str) in lst.enumerated() {
let count = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput."
result.append(output)
}
return result
}
extension Int {
var isOdd: Bool { return self % 2 != 0 }
}
`````````swift
func oddCount(lst: [String]) -> [String] {
var result = [String]()
for (index, str) in lst.enumerated() {
let count = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput."
result.append(output)
}
return result
}
extension Int {
var isOdd: Bool { return self % 2 != 0 }
}
oddCount(lst: ["1234567"])
```let count = str.filter { $0.isOdd }.count // value of type 'String.Element' (aka 'Character') has no member 'isOdd'func oddCount(lst: [String]) -> [String] {
var result = [String]()
for (index, str) in lst.enumerated() {
let count = str.filter { $0.isOdd }.count
result.append("the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput.")
}
return result
}
extension Int {
var isOdd: Bool { return self % 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 (index, str) in lst.enumerated() {
let count = str.filter { $0.isOdd }.count
result.append("the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput.")
}
return result
}
extension Int {
var isOdd: Bool { return self % 2 == 1 }
}
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."]
``````let count = str.filter { $0.isOdd }.count // value of type 'String.Element' (aka 'Character') has no member 'isOdd'func oddCount(lst: [String]) -> [String] {
var result = [String]()
for (index, str) in lst.enumerated() {
let oddCount = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(oddCount)n the str\(oddCount)ng \(index) of the \(index)nput."
result.append(output)
}
return result
}
extension Int {
var isOdd: Bool {
return self % 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 (index, str) in lst.enumerated() {
let oddCount = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(oddCount)n the str\(oddCount)ng \(index) of the \(index)nput."
result.append(output)
}
return result
}
extension Int {
var isOdd: Bool {
return self % 2 == 1
}
}
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."]
``````let oddCount = str.filter { $0.isOdd }.count // value of type 'String.Element' (aka 'Character') has no member 'isOdd'func oddCount(lst: [String]) -> [String] {
var result = [String]()
for (index, str) in lst.enumerated() {
let count = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput."
result.append(output)
}
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 (index, str) in lst.enumerated() {
let count = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput."
result.append(output)
}
return result
}
`````````swift
func oddCount(lst: [String]) -> [String] {
var result = [String]()
for (index, str) in lst.enumerated() {
let count = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput."
result.append(output)
}
return result
}
oddCount(lst: ["1234567"])
```let count = str.filter { $0.isOdd }.count // value of type 'String.Element' (aka 'Character') has no member 'isOdd'func oddCount(lst: [String]) -> [String] {
var result = [String]()
for (index, str) in lst.enumerated() {
let count = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput."
result.append(output)
}
return result
}
extension Int {
var isOdd: Bool {
return self % 2 != 0
}
}```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 (index, str) in lst.enumerated() {
let count = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput."
result.append(output)
}
return result
}
extension Int {
var isOdd: Bool {
return self % 2 != 0
}
}
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."]
``````let count = str.filter { $0.isOdd }.count // value of type 'String.Element' (aka 'Character') has no member 'isOdd'func oddCount(lst: [String]) -> [String] {
var result = [String]()
for (index, str) in lst.enumerated() {
let count = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput."
result.append(output)
}
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 (index, str) in lst.enumerated() {
let count = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput."
result.append(output)
}
return result
}
// Test cases
print(oddCount(lst: ["1234567"]))
print(oddCount(lst: ["3", "11111111"]))
``````
```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 (index, str) in lst.enumerated() {
let count = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput."
result.append(output)
}
return result
}
// Test cases
print(oddCount(lst: ["1234567"]))
print(oddCount(lst: ["3", "11111111"]))
```let count = str.filter { $0.isOdd }.count // value of type 'String.Element' (aka 'Character') has no member 'isOdd'func oddCount(lst: [String]) -> [String] {
var result = [String]()
for (index, str) in lst.enumerated() {
let oddCount = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(oddCount)n the str\(oddCount)ng \(oddCount) of the \(oddCount)nput."
result.append(output)
}
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 (index, str) in lst.enumerated() {
let oddCount = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(oddCount)n the str\(oddCount)ng \(oddCount) of the \(oddCount)nput."
result.append(output)
}
return result
}
// Test cases
print(oddCount(lst: ["1234567"]))
print(oddCount(lst: ["3", "11111111"]))
``````
```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 (index, str) in lst.enumerated() {
let oddCount = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(oddCount)n the str\(oddCount)ng \(oddCount) of the \(oddCount)nput."
result.append(output)
}
return result
}
// Test cases
print(oddCount(lst: ["1234567"]))
print(oddCount(lst: ["3", "11111111"]))
```let oddCount = str.filter { $0.isOdd }.count // value of type 'String.Element' (aka 'Character') has no member 'isOdd'func oddCount(lst: [String]) -> [String] {
var result = [String]()
for (index, str) in lst.enumerated() {
let count = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput."
result.append(output)
}
return result
}
extension Int {
var isOdd: Bool {
return self % 2 != 0
}
}```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 (index, str) in lst.enumerated() {
let count = str.filter { $0.isOdd }.count
let output = "the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput."
result.append(output)
}
return result
}
extension Int {
var isOdd: Bool {
return self % 2 != 0
}
}
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."]
``````let count = str.filter { $0.isOdd }.count // value of type 'String.Element' (aka 'Character') has no member 'isOdd'func oddCount(lst: [String]) -> [String] {
var result = [String]()
for (index, str) in lst.enumerated() {
let count = str.filter { $0.isOdd }.count
result.append("the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput.")
}
return result
}
extension Int {
var isOdd: Bool {
return self % 2 != 0
}
}```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 (index, str) in lst.enumerated() {
let count = str.filter { $0.isOdd }.count
result.append("the number of odd elements \(count)n the str\(count)ng \(count) of the \(count)nput.")
}
return result
}
extension Int {
var isOdd: Bool {
return self % 2 != 0
}
}
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."]
``````let count = str.filter { $0.isOdd }.count // value of type 'String.Element' (aka 'Character') has no member 'isOdd'func minSubArraySum(nums: [Int]) -> Int {
var minSum = Int.max
var currentSum = 0
for num in nums {
currentSum += num
minSum = min(minSum, currentSum)
if currentSum > 0 {
currentSum = 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 currentSum = 0
for num in nums {
currentSum += num
minSum = min(minSum, currentSum)
if currentSum > 0 {
currentSum = 0
}
}
return minSum
}
``````python
def minSubArraySum(nums):
minSum = float('inf')
currentSum = 0
for num in nums:
currentSum += num
minSum = min(minSum, currentSum)
if currentSum > 0:
currentSum = 0
return minSum
# Test cases
print(minSubArraySum([2, 3, 4, 1, 2, 4])) # 1
print(minSubArraySum([-1, -2, -3])) # -6
```func minSubArraySum(nums: [Int]) -> Int {
var minSum = Int.max
var currentSum = 0
for num in nums {
currentSum += num
minSum = min(minSum, currentSum)
if currentSum > 0 {
currentSum = 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 currentSum = 0
for num in nums {
currentSum += num
minSum = min(minSum, currentSum)
if currentSum > 0 {
currentSum = 0
}
}
return minSum
}
``````python
def minSubArraySum(nums):
minSum = float('inf')
currentSum = 0
for num in nums:
currentSum += num
minSum = min(minSum, currentSum)
if currentSum > 0:
currentSum = 0
return minSum
print(minSubArraySum([2, 3, 4, 1, 2, 4])) # 1
print(minSubArraySum([-1, -2, -3])) # -6
```func minSubArraySum(nums: [Int]) -> Int {
var minSum = Int.max
var currentSum = 0
for num in nums {
currentSum += num
minSum = min(minSum, currentSum)
if currentSum > 0 {
currentSum = 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 currentSum = 0
for num in nums {
currentSum += num
minSum = min(minSum, currentSum)
if currentSum > 0 {
currentSum = 0
}
}
return minSum
}
``````python
def minSubArraySum(nums):
minSum = float('inf')
currentSum = 0
for num in nums:
currentSum += num
minSum = min(minSum, currentSum)
if currentSum > 0:
currentSum = 0
return minSum
```func minSubArraySum(nums: [Int]) -> Int {
var minSum = nums[0]
var currentSum = nums[0]
for i in 1..<nums.count {
currentSum = min(nums[i], currentSum + nums[i])
minSum = min(minSum, currentSum)
}
return minSum
}
func maxSubArraySum(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
}```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 = nums[0]
var currentSum = nums[0]
for i in 1..<nums.count {
currentSum = min(nums[i], currentSum + nums[i])
minSum = min(minSum, currentSum)
}
return minSum
}
``````
```swift
// Given an array of integers nums, find the maximum sum of any non-empty sub-array
// of nums.
// Example
// maxSubArraySum(nums: [2, 3, 4, 1, 2, 4]) == 15
// maxSubArraySum(nums: [-1, -2, -3]) == -1
func maxSubArraySum(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 minSubArraySum(nums: [Int]) -> Int {
var minSum = Int.max
var currentSum = 0
for num in nums {
currentSum = min(currentSum + num, num)
minSum = min(minSum, currentSum)
}
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 currentSum = 0
for num in nums {
currentSum = min(currentSum + num, num)
minSum = min(minSum, currentSum)
}
return minSum
}
``````python
def minSubArraySum(nums):
minSum = float('inf')
currentSum = 0
for num in nums:
currentSum = min(currentSum + num, num)
minSum = min(minSum, currentSum)
return minSum
print(minSubArraySum([2, 3, 4, 1, 2, 4]))
print(minSubArraySum([-1, -2, -3]))
```func minSubArraySum(nums: [Int]) -> Int {
var minSum = Int.max
var currentSum = 0
for num in nums {
currentSum += num
minSum = min(minSum, currentSum)
if currentSum > 0 {
currentSum = 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 currentSum = 0
for num in nums {
currentSum += num
minSum = min(minSum, currentSum)
if currentSum > 0 {
currentSum = 0
}
}
return minSum
}
``````python
def minSubArraySum(nums):
minSum = float('inf')
currentSum = 0
for num in nums:
currentSum += num
minSum = min(minSum, currentSum)
if currentSum > 0:
currentSum = 0
return minSum
print(minSubArraySum([2, 3, 4, 1, 2, 4]))
print(minSubArraySum([-1, -2, -3]))
```func minSubArraySum(nums: [Int]) -> Int {
var minSum = nums[0]
var currentSum = nums[0]
for i in 1..<nums.count {
currentSum = min(nums[i], currentSum + nums[i])
minSum = min(minSum, currentSum)
}
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 = nums[0]
var currentSum = nums[0]
for i in 1..<nums.count {
currentSum = min(nums[i], currentSum + nums[i])
minSum = min(minSum, currentSum)
}
return minSum
}
``````python
def minSubArraySum(nums):
minSum = nums[0]
currentSum = nums[0]
for i in range(1, len(nums)):
currentSum = min(nums[i], currentSum + nums[i])
minSum = min(minSum, currentSum)
return minSum
```func minSubArraySum(nums: [Int]) -> Int {
var minSum = Int.max
var currentSum = 0
for num in nums {
currentSum = min(currentSum + num, num)
minSum = min(minSum, currentSum)
}
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 currentSum = 0
for num in nums {
currentSum = min(currentSum + num, num)
minSum = min(minSum, currentSum)
}
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 currentSum = 0
for num in nums {
currentSum = min(currentSum + num, num)
minSum = min(minSum, currentSum)
}
return minSum
}
```func minSubArraySum(nums: [Int]) -> Int {
var minSum = Int.max
var currentSum = 0
for num in nums {
currentSum = min(num, currentSum + num)
minSum = min(minSum, currentSum)
}
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 currentSum = 0
for num in nums {
currentSum = min(num, currentSum + num)
minSum = min(minSum, currentSum)
}
return minSum
}
``````
```python
def minSubArraySum(nums):
minSum = float('inf')
currentSum = 0
for num in nums:
currentSum = min(num, currentSum + num)
minSum = min(minSum, currentSum)
return minSum
print(minSubArraySum([2, 3, 4, 1, 2, 4]))
print(minSubArraySum([-1, -2, -3]))
```func minSubArraySum(nums: [Int]) -> Int {
var minSum = Int.max
var currentSum = 0
for num in nums {
currentSum += num
minSum = min(minSum, currentSum)
if currentSum > 0 {
currentSum = 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 currentSum = 0
for num in nums {
currentSum += num
minSum = min(minSum, currentSum)
if currentSum > 0 {
currentSum = 0
}
}
return minSum
}
``````python
def minSubArraySum(nums):
minSum = float('inf')
currentSum = 0
for num in nums:
currentSum += num
minSum = min(minSum, currentSum)
if currentSum > 0:
currentSum = 0
return minSum
print(minSubArraySum([2, 3, 4, 1, 2, 4])) # 1
print(minSubArraySum([-1, -2, -3])) # -6
```func maxFill(grid: [[Int]], capacity: Int) -> Int {
var count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.contains(true) {
count += 1
for i in 0..<grid.count {
for j in 0..<grid[i].count {
if grid[i][j] == 1 {
wells[i] -= 1
grid[i][j] = 0
if wells[i] == 0 {
wells.remove(at: i)
}
}
}
}
}
return count
}```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 count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.contains(true) {
count += 1
for i in 0..<grid.count {
for j in 0..<grid[i].count {
if grid[i][j] == 1 {
wells[i] -= 1
grid[i][j] = 0
if wells[i] == 0 {
wells.remove(at: i)
}
}
}
}
}
return count
}
``````
```swift
func maxFill(grid: [[Int]], capacity: Int) -> Int {
var count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.contains(true) {
count += 1
for i in 0..<grid.count {
for j in 0..<grid[i].count {
if grid[i][j] == 1 {
wells[i] -= 1
grid[i][j] = 0
if wells[i] == 0 {
wells.remove(at: i)
}
}
}
}
}
return count
}
// Test cases
print(maxFill(grid: [[0, 0, 1, 0], [0, 1, 0, 0], [1, 1, 1, 1]], capacity: 1)) // 6
print(maxFill(grid: [[0, 0, 1, 1], [0, 0, 0, 0], [1, 1, 1, 1], [0, 1, 1, 1]], capacity: 2)) // 5
print(maxFill(grid: [[0, 0, 0], [0, 0, 0]], capacity: 5)) // 0
```var wells = grid.map { $0.count(where: { $0 == 1 }) } // cannot call value of non-function type 'Int'grid[i][j] = 0 // cannot assign through subscript: 'grid' is a 'let' constantfunc maxFill(grid: [[Int]], capacity: Int) -> Int {
var count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.contains(true) {
for i in 0..<wells.count {
if wells[i] > 0 {
wells[i] -= capacity
count += 1
}
}
wells = wells.map { max($0, 0) }
}
return count
}```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 count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.contains(true) {
for i in 0..<wells.count {
if wells[i] > 0 {
wells[i] -= capacity
count += 1
}
}
wells = wells.map { max($0, 0) }
}
return count
}
``````python
def maxFill(grid, capacity):
count = 0
wells = [row.count(1) for row in grid]
while any(wells):
for i in range(len(wells)):
if wells[i] > 0:
wells[i] -= capacity
count += 1
wells = [max(0, well) for well in wells]
return count
```var wells = grid.map { $0.count(where: { $0 == 1 }) } // cannot call value of non-function type 'Int'func maxFill(grid: [[Int]], capacity: Int) -> Int {
var count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.joined().contains("1") {
for i in 0..<grid.count {
if wells[i] > 0 {
wells[i] -= 1
count += 1
if count % capacity == 0 {
break
}
}
}
}
return count
}```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 count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.joined().contains("1") {
for i in 0..<grid.count {
if wells[i] > 0 {
wells[i] -= 1
count += 1
if count % capacity == 0 {
break
}
}
}
}
return count
}
``````
```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 count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.joined().contains("1") {
for i in 0..<grid.count {
if wells[i] > 0 {
wells[i] -= 1
count += 1
if count % capacity == 0 {
break
}
}
}
}
return count
}
```var wells = grid.map { $0.count(where: { $0 == 1 }) } // cannot call value of non-function type 'Int'func maxFill(grid: [[Int]], capacity: Int) -> Int {
var count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.contains(true) {
count += 1
for i in 0..<grid.count {
if wells[i] > 0 {
wells[i] -= 1
}
}
wells = wells.map { $0 + capacity }
}
return count
}```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 count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.contains(true) {
count += 1
for i in 0..<grid.count {
if wells[i] > 0 {
wells[i] -= 1
}
}
wells = wells.map { $0 + capacity }
}
return count
}
``````
```swift
func maxFill(grid: [[Int]], capacity: Int) -> Int {
var count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.contains(true) {
count += 1
for i in 0..<grid.count {
if wells[i] > 0 {
wells[i] -= 1
}
}
wells = wells.map { $0 + capacity }
}
return count
}
// Test cases
print(maxFill(grid: [[0, 0, 1, 0], [0, 1, 0, 0], [1, 1, 1, 1]], capacity: 1)) // Output: 6
print(maxFill(grid: [[0, 0, 1, 1], [0, 0, 0, 0], [1, 1, 1, 1], [0, 1, 1, 1]], capacity: 2)) // Output: 5
print(maxFill(grid: [[0, 0, 0], [0, 0, 0]], capacity: 5)) // Output: 0
```var wells = grid.map { $0.count(where: { $0 == 1 }) } // cannot call value of non-function type 'Int'func maxFill(grid: [[Int]], capacity: Int) -> Int {
var count = 0
for i in 0..<grid.count {
for j in 0..<grid[i].count {
if grid[i][j] == 1 {
count += 1
grid[i][j] = 0
}
}
}
return (count + capacity - 1) / capacity
}```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 count = 0
for i in 0..<grid.count {
for j in 0..<grid[i].count {
if grid[i][j] == 1 {
count += 1
grid[i][j] = 0
}
}
}
return (count + capacity - 1) / capacity
}
``````
```python
def maxFill(grid, capacity):
count = 0
for i in range(len(grid)):
for j in range(len(grid[i])):
if grid[i][j] == 1:
count += 1
grid[i][j] = 0
return (count + capacity - 1) // capacity
```grid[i][j] = 0 // cannot assign through subscript: 'grid' is a 'let' constantfunc maxFill(grid: [[Int]], capacity: Int) -> Int {
var count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.contains(true) {
for i in 0..<wells.count {
if wells[i] > 0 {
wells[i] -= capacity
count += 1
}
}
}
return count
}```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 count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.contains(true) {
for i in 0..<wells.count {
if wells[i] > 0 {
wells[i] -= capacity
count += 1
}
}
}
return count
}
``````
```python
def maxFill(grid, capacity):
count = 0
wells = [row.count(1) for row in grid]
while any(wells):
for i in range(len(wells)):
if wells[i] > 0:
wells[i] -= capacity
count += 1
return count
```var wells = grid.map { $0.count(where: { $0 == 1 }) } // cannot call value of non-function type 'Int'func maxFill(grid: [[Int]], capacity: Int) -> Int {
var count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.contains(true) {
count += 1
for i in 0..<grid.count {
if wells[i] > 0 {
wells[i] -= 1
}
}
wells = wells.map { $0 < capacity ? $0 + 1 : $0 }
}
return count
}```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 count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.contains(true) {
count += 1
for i in 0..<grid.count {
if wells[i] > 0 {
wells[i] -= 1
}
}
wells = wells.map { $0 < capacity ? $0 + 1 : $0 }
}
return count
}
``````
```swift
func maxFill(grid: [[Int]], capacity: Int) -> Int {
var count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.contains(true) {
count += 1
for i in 0..<grid.count {
if wells[i] > 0 {
wells[i] -= 1
}
}
wells = wells.map { $0 < capacity ? $0 + 1 : $0 }
}
return count
}
// Test cases
print(maxFill(grid: [[0, 0, 1, 0], [0, 1, 0, 0], [1, 1, 1, 1]], capacity: 1)) // Output: 6
print(maxFill(grid: [[0, 0, 1, 1], [0, 0, 0, 0], [1, 1, 1, 1], [0, 1, 1, 1]], capacity: 2)) // Output: 5
print(maxFill(grid: [[0, 0, 0], [0, 0, 0]], capacity: 5)) // Output: 0
```var wells = grid.map { $0.count(where: { $0 == 1 }) } // cannot call value of non-function type 'Int'func maxFill(grid: [[Int]], capacity: Int) -> Int {
var count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.contains(true) {
wells = wells.map { $0 - capacity }
count += 1
}
return count
}```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 count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.contains(true) {
wells = wells.map { $0 - capacity }
count += 1
}
return count
}
``````
```swift
func maxFill(grid: [[Int]], capacity: Int) -> Int {
var count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.contains(true) {
wells = wells.map { $0 - capacity }
count += 1
}
return count
}
// Test cases
print(maxFill(grid: [[0, 0, 1, 0], [0, 1, 0, 0], [1, 1, 1, 1]], capacity: 1)) // Output: 6
print(maxFill(grid: [[0, 0, 1, 1], [0, 0, 0, 0], [1, 1, 1, 1], [0, 1, 1, 1]], capacity: 2)) // Output: 5
print(maxFill(grid: [[0, 0, 0], [0, 0, 0]], capacity: 5)) // Output: 0
```var wells = grid.map { $0.count(where: { $0 == 1 }) } // cannot call value of non-function type 'Int'func maxFill(grid: [[Int]], capacity: Int) -> Int {
var count = 0
for i in 0..<grid.count {
for j in 0..<grid[i].count {
if grid[i][j] == 1 {
count += 1
}
}
}
return (count + capacity - 1) / capacity
}```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 count = 0
for i in 0..<grid.count {
for j in 0..<grid[i].count {
if grid[i][j] == 1 {
count += 1
}
}
}
return (count + capacity - 1) / capacity
}
``````
```swift
func maxFill(grid: [[Int]], capacity: Int) -> Int {
var count = 0
for i in 0..<grid.count {
for j in 0..<grid[i].count {
if grid[i][j] == 1 {
count += 1
}
}
}
return (count + capacity - 1) / capacity
}
// Test cases
print(maxFill(grid: [[0, 0, 1, 0], [0, 1, 0, 0], [1, 1, 1, 1]], capacity: 1)) // Expected output: 6
print(maxFill(grid: [[0, 0, 1, 1], [0, 0, 0, 0], [1, 1, 1, 1], [0, 1, 1, 1]], capacity: 2)) // Expected output: 5
print(maxFill(grid: [[0, 0, 0], [0, 0, 0]], capacity: 5)) // Expected output: 0
``` // XCTAssertTrue failedfunc maxFill(grid: [[Int]], capacity: Int) -> Int {
var count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.contains(1) {
wells = wells.map { $0 - 1 }
count += 1
if count % capacity == 0 {
wells = wells.map { $0 + capacity }
}
}
return count
}```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 count = 0
var wells = grid.map { $0.count(where: { $0 == 1 }) }
while wells.contains(1) {
wells = wells.map { $0 - 1 }
count += 1
if count % capacity == 0 {
wells = wells.map { $0 + capacity }
}
}
return count
}
``````
```python
def maxFill(grid, capacity):
count = 0
wells = [row.count(1) for row in grid]
while 1 in wells:
wells = [w - 1 for w in wells]
count += 1
if count % capacity == 0:
wells = [w + capacity for w in wells]
return count
```var wells = grid.map { $0.count(where: { $0 == 1 }) } // cannot call value of non-function type 'Int'func sortArray(arr: [Int]) -> [Int] {
return arr.sorted { a, b in
let aOnes = a.binaryRepresentation.filter { $0 == "1" }.count
let bOnes = b.binaryRepresentation.filter { $0 == "1" }.count
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}```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 in
let aOnes = a.binaryRepresentation.filter { $0 == "1" }.count
let bOnes = b.binaryRepresentation.filter { $0 == "1" }.count
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}
``````
```swift
// Testing the function
print(sortArray(arr: [1, 5, 2, 3, 4])) // [1, 2, 3, 4, 5]
print(sortArray(arr: [-2, -3, -4, -5, -6])) // [-6, -5, -4, -3, -2]
print(sortArray(arr: [1, 0, 2, 3, 4])) // [0, 1, 2, 3, 4]
```let aOnes = a.binaryRepresentation.filter { $0 == "1" }.count // value of type 'Int' has no member 'binaryRepresentation'func sortArray(arr: [Int]) -> [Int] {
return arr.sorted { a, b in
let aOnes = countOnes(a)
let bOnes = countOnes(b)
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}
func countOnes(_ num: Int) -> Int {
var count = 0
var n = abs(num)
while n != 0 {
count += n & 1
n = n >> 1
}
return 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 in
let aOnes = countOnes(a)
let bOnes = countOnes(b)
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}
func countOnes(_ num: Int) -> Int {
var count = 0
var n = abs(num)
while n != 0 {
count += n & 1
n = n >> 1
}
return count
}
``````
```swift
// Testing the sortArray function
// Test case 1
let arr1 = [1, 5, 2, 3, 4]
print(sortArray(arr: arr1)) // Output: [1, 2, 3, 4, 5]
// Test case 2
let arr2 = [-2, -3, -4, -5, -6]
print(sortArray(arr: arr2)) // Output: [-6, -5, -4, -3, -2]
// Test case 3
let arr3 = [1, 0, 2, 3, 4]
print(sortArray(arr: arr3)) // Output: [0, 1, 2, 3, 4]
```func sortArray(arr: [Int]) -> [Int] {
return arr.sorted { a, b in
let aOnes = countOnes(in: a)
let bOnes = countOnes(in: b)
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}
func countOnes(in num: Int) -> Int {
var n = num
var count = 0
while n != 0 {
count += n & 1
n >>= 1
}
return 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 in
let aOnes = countOnes(in: a)
let bOnes = countOnes(in: b)
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}
func countOnes(in num: Int) -> Int {
var n = num
var count = 0
while n != 0 {
count += n & 1
n >>= 1
}
return count
}
``````
```swift
// Test the sortArray function with some test cases
print(sortArray(arr: [1, 5, 2, 3, 4])) // [1, 2, 3, 4, 5]
print(sortArray(arr: [-2, -3, -4, -5, -6])) // [-6, -5, -4, -3, -2]
print(sortArray(arr: [1, 0, 2, 3, 4])) // [0, 1, 2, 3, 4]
```func sortArray(arr: [Int]) -> [Int] {
return arr.sorted { a, b in
let aOnes = countOnes(a)
let bOnes = countOnes(b)
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}
func countOnes(_ n: Int) -> Int {
var count = 0
var num = n
while num != 0 {
count += num & 1
num = num >> 1
}
return 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 in
let aOnes = countOnes(a)
let bOnes = countOnes(b)
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}
func countOnes(_ n: Int) -> Int {
var count = 0
var num = n
while num != 0 {
count += num & 1
num = num >> 1
}
return count
}
``````
```swift
// Testing the sortArray function
print(sortArray(arr: [1, 5, 2, 3, 4])) // [1, 2, 3, 4, 5]
print(sortArray(arr: [-2, -3, -4, -5, -6])) // [-6, -5, -4, -3, -2]
print(sortArray(arr: [1, 0, 2, 3, 4])) // [0, 1, 2, 3, 4]
```func sortArray(arr: [Int]) -> [Int] {
return arr.sorted { a, b in
let aOnes = countOnes(in: a)
let bOnes = countOnes(in: b)
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}
func countOnes(in num: Int) -> Int {
var count = 0
var n = num
while n != 0 {
count += n & 1
n >>= 1
}
return 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 in
let aOnes = countOnes(in: a)
let bOnes = countOnes(in: b)
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}
func countOnes(in num: Int) -> Int {
var count = 0
var n = num
while n != 0 {
count += n & 1
n >>= 1
}
return count
}
``````
```swift
// Test cases
print(sortArray(arr: [1, 5, 2, 3, 4])) // [1, 2, 3, 4, 5]
print(sortArray(arr: [-2, -3, -4, -5, -6])) // [-6, -5, -4, -3, -2]
print(sortArray(arr: [1, 0, 2, 3, 4])) // [0, 1, 2, 3, 4]
```func sortArray(arr: [Int]) -> [Int] {
return arr.sorted { a, b in
let aOnes = countOnes(in: a)
let bOnes = countOnes(in: b)
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}
func countOnes(in num: Int) -> Int {
var count = 0
var n = num
while n != 0 {
count += n & 1
n = n >> 1
}
return 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 in
let aOnes = countOnes(in: a)
let bOnes = countOnes(in: b)
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}
func countOnes(in num: Int) -> Int {
var count = 0
var n = num
while n != 0 {
count += n & 1
n = n >> 1
}
return count
}
``````
```swift
// Testing the sortArray function
// Test case 1
let arr1 = [1, 5, 2, 3, 4]
print(sortArray(arr: arr1)) // Output: [1, 2, 3, 4, 5]
// Test case 2
let arr2 = [-2, -3, -4, -5, -6]
print(sortArray(arr: arr2)) // Output: [-6, -5, -4, -3, -2]
// Test case 3
let arr3 = [1, 0, 2, 3, 4]
print(sortArray(arr: arr3)) // Output: [0, 1, 2, 3, 4]
```func sortArray(arr: [Int]) -> [Int] {
return arr.sorted { a, b in
let aOnes = countOnes(a)
let bOnes = countOnes(b)
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}
func countOnes(_ n: Int) -> Int {
var count = 0
var num = n
while num != 0 {
count += num & 1
num = num >> 1
}
return 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 in
let aOnes = countOnes(a)
let bOnes = countOnes(b)
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}
func countOnes(_ n: Int) -> Int {
var count = 0
var num = n
while num != 0 {
count += num & 1
num = num >> 1
}
return count
}
``````
```swift
// Test cases
print(sortArray(arr: [1, 5, 2, 3, 4])) // [1, 2, 3, 4, 5]
print(sortArray(arr: [-2, -3, -4, -5, -6])) // [-6, -5, -4, -3, -2]
print(sortArray(arr: [1, 0, 2, 3, 4])) // [0, 1, 2, 3, 4]
```func sortArray(arr: [Int]) -> [Int] {
return arr.sorted { a, b in
let aOnes = countOnes(a)
let bOnes = countOnes(b)
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}
func countOnes(_ n: Int) -> Int {
var count = 0
var num = n
while num != 0 {
count += num & 1
num = num >> 1
}
return 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 in
let aOnes = countOnes(a)
let bOnes = countOnes(b)
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}
func countOnes(_ n: Int) -> Int {
var count = 0
var num = n
while num != 0 {
count += num & 1
num = num >> 1
}
return count
}
``````
```swift
// Testing the sortArray function
print(sortArray(arr: [1, 5, 2, 3, 4])) // Output: [1, 2, 3, 4, 5]
print(sortArray(arr: [-2, -3, -4, -5, -6])) // Output: [-6, -5, -4, -3, -2]
print(sortArray(arr: [1, 0, 2, 3, 4])) // Output: [0, 1, 2, 3, 4]
```func sortArray(arr: [Int]) -> [Int] {
return arr.sorted { a, b in
let aOnes = countOnes(a)
let bOnes = countOnes(b)
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}
func countOnes(_ n: Int) -> Int {
var count = 0
var num = n
while num != 0 {
count += num & 1
num = num >> 1
}
return 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 in
let aOnes = countOnes(a)
let bOnes = countOnes(b)
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}
func countOnes(_ n: Int) -> Int {
var count = 0
var num = n
while num != 0 {
count += num & 1
num = num >> 1
}
return count
}
``````
```swift
// Testing the sortArray function
print(sortArray(arr: [1, 5, 2, 3, 4])) // [1, 2, 3, 4, 5]
print(sortArray(arr: [-2, -3, -4, -5, -6])) // [-6, -5, -4, -3, -2]
print(sortArray(arr: [1, 0, 2, 3, 4])) // [0, 1, 2, 3, 4]
```func sortArray(arr: [Int]) -> [Int] {
return arr.sorted { a, b in
let aOnes = countOnes(a)
let bOnes = countOnes(b)
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}
func countOnes(_ n: Int) -> Int {
var count = 0
var num = n
while num != 0 {
count += num & 1
num = num >> 1
}
return 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 in
let aOnes = countOnes(a)
let bOnes = countOnes(b)
if aOnes == bOnes {
return a < b
}
return aOnes < bOnes
}
}
func countOnes(_ n: Int) -> Int {
var count = 0
var num = n
while num != 0 {
count += num & 1
num = num >> 1
}
return count
}
``````
```swift
// Test cases
print(sortArray(arr: [1, 5, 2, 3, 4])) // [1, 2, 3, 4, 5]
print(sortArray(arr: [-2, -3, -4, -5, -6])) // [-6, -5, -4, -3, -2]
print(sortArray(arr: [1, 0, 2, 3, 4])) // [0, 1, 2, 3, 4]
```func selectWords(s: String, n: Int) -> [String] {
let vowels: Set<Character> = ["a", "e", "i", "o", "u"]
var words: [String] = []
var currentWord = ""
for char in s {
if char == " " {
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
currentWord = ""
} else {
currentWord += String(char)
}
}
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
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: Set<Character> = ["a", "e", "i", "o", "u"]
var words: [String] = []
var currentWord = ""
for char in s {
if char == " " {
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
currentWord = ""
} else {
currentWord += String(char)
}
}
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
return words
}
``````
```swift
// Testing the function with provided examples
print(selectWords(s: "Mary had a little lamb", n: 4)) // Expected output: ["little"]
print(selectWords(s: "Mary had a little lamb", n: 3)) // Expected output: ["Mary", "lamb"]
print(selectWords(s: "simple white space", n: 2)) // Expected output: []
print(selectWords(s: "Hello world", n: 4)) // Expected output: ["world"]
print(selectWords(s: "Uncle sam", n: 3)) // Expected output: ["Uncle"]
```if currentWord.filter { !vowels.contains($0) }.count == n { // trailing closure in this context is confusable with the body of the statement; pass as a parenthesized argument to silence this warningif currentWord.filter { !vowels.contains($0) }.count == n { // trailing closure in this context is confusable with the body of the statement; pass as a parenthesized argument to silence this warning // XCTAssertTrue failedfunc selectWords(s: String, n: Int) -> [String] {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]
var words: [String] = []
var currentWord = ""
for char in s {
if char == " " {
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
currentWord = ""
} else {
currentWord += String(char)
}
}
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
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: Set<Character> = ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]
var words: [String] = []
var currentWord = ""
for char in s {
if char == " " {
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
currentWord = ""
} else {
currentWord += String(char)
}
}
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
return words
}
``````
```swift
// Testing the function with provided examples
print(selectWords(s: "Mary had a little lamb", n: 4)) // Expected output: ["little"]
print(selectWords(s: "Mary had a little lamb", n: 3)) // Expected output: ["Mary", "lamb"]
print(selectWords(s: "simple white space", n: 2)) // Expected output: []
print(selectWords(s: "Hello world", n: 4)) // Expected output: ["world"]
print(selectWords(s: "Uncle sam", n: 3)) // Expected output: ["Uncle"]
```if currentWord.filter { !vowels.contains($0) }.count == n { // trailing closure in this context is confusable with the body of the statement; pass as a parenthesized argument to silence this warningif currentWord.filter { !vowels.contains($0) }.count == n { // trailing closure in this context is confusable with the body of the statement; pass as a parenthesized argument to silence this warningfunc selectWords(s: String, n: Int) -> [String] {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]
var words: [String] = s.components(separatedBy: " ")
var selectedWords: [String] = []
for word in words {
var count: Int = 0
for char in word {
if !vowels.contains(char) {
count += 1
}
}
if count == n {
selectedWords.append(word)
}
}
return selectedWords
}```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: Set<Character> = ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]
var words: [String] = s.components(separatedBy: " ")
var selectedWords: [String] = []
for word in words {
var count: Int = 0
for char in word {
if !vowels.contains(char) {
count += 1
}
}
if count == n {
selectedWords.append(word)
}
}
return selectedWords
}
``````
```swift
// Testing the function with provided test cases
print(selectWords(s: "Mary had a little lamb", n: 4)) // Expected output: ["little"]
print(selectWords(s: "Mary had a little lamb", n: 3)) // Expected output: ["Mary", "lamb"]
print(selectWords(s: "simple white space", n: 2)) // Expected output: []
print(selectWords(s: "Hello world", n: 4)) // Expected output: ["world"]
print(selectWords(s: "Uncle sam", n: 3)) // Expected output: ["Uncle"]
```var words: [String] = s.components(separatedBy: " ") // variable 'words' was never mutated; consider changing to 'let' constantfunc selectWords(s: String, n: Int) -> [String] {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]
var words: [String] = s.components(separatedBy: " ")
var selectedWords: [String] = []
for word in words {
var consonantCount = 0
for char in word {
if !vowels.contains(char) {
consonantCount += 1
}
}
if consonantCount == n {
selectedWords.append(word)
}
}
return selectedWords
}```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: Set<Character> = ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"]
var words: [String] = s.components(separatedBy: " ")
var selectedWords: [String] = []
for word in words {
var consonantCount = 0
for char in word {
if !vowels.contains(char) {
consonantCount += 1
}
}
if consonantCount == n {
selectedWords.append(word)
}
}
return selectedWords
}
``````
```swift
// Test cases
print(selectWords(s: "Mary had a little lamb", n: 4)) // ["little"]
print(selectWords(s: "Mary had a little lamb", n: 3)) // ["Mary", "lamb"]
print(selectWords(s: "simple white space", n: 2)) // []
print(selectWords(s: "Hello world", n: 4)) // ["world"]
print(selectWords(s: "Uncle sam", n: 3)) // ["Uncle"]
```var words: [String] = s.components(separatedBy: " ") // variable 'words' was never mutated; consider changing to 'let' constantfunc selectWords(s: String, n: Int) -> [String] {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", " "]
var words: [String] = []
var currentWord = ""
for char in s {
if char != " " {
currentWord += String(char)
} else {
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
currentWord = ""
}
}
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
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: Set<Character> = ["a", "e", "i", "o", "u", " "]
var words: [String] = []
var currentWord = ""
for char in s {
if char != " " {
currentWord += String(char)
} else {
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
currentWord = ""
}
}
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
return words
}
``````
```swift
// Test cases
print(selectWords(s: "Mary had a little lamb", n: 4)) // ["little"]
print(selectWords(s: "Mary had a little lamb", n: 3)) // ["Mary", "lamb"]
print(selectWords(s: "simple white space", n: 2)) // []
print(selectWords(s: "Hello world", n: 4)) // ["world"]
print(selectWords(s: "Uncle sam", n: 3)) // ["Uncle"]
```if currentWord.filter { !vowels.contains($0) }.count == n { // trailing closure in this context is confusable with the body of the statement; pass as a parenthesized argument to silence this warningif currentWord.filter { !vowels.contains($0) }.count == n { // trailing closure in this context is confusable with the body of the statement; pass as a parenthesized argument to silence this warning // XCTAssertTrue failedfunc selectWords(s: String, n: Int) -> [String] {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", " "]
var words: [String] = []
var currentWord = ""
for char in s {
if char != " " {
currentWord += String(char)
} else {
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
currentWord = ""
}
}
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
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: Set<Character> = ["a", "e", "i", "o", "u", " "]
var words: [String] = []
var currentWord = ""
for char in s {
if char != " " {
currentWord += String(char)
} else {
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
currentWord = ""
}
}
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
return words
}
``````
```swift
// Testing the function
print(selectWords(s: "Mary had a little lamb", n: 4)) // ["little"]
print(selectWords(s: "Mary had a little lamb", n: 3)) // ["Mary", "lamb"]
print(selectWords(s: "simple white space", n: 2)) // []
print(selectWords(s: "Hello world", n: 4)) // ["world"]
print(selectWords(s: "Uncle sam", n: 3)) // ["Uncle"]
```if currentWord.filter { !vowels.contains($0) }.count == n { // trailing closure in this context is confusable with the body of the statement; pass as a parenthesized argument to silence this warningif currentWord.filter { !vowels.contains($0) }.count == n { // trailing closure in this context is confusable with the body of the statement; pass as a parenthesized argument to silence this warning // XCTAssertTrue failedfunc selectWords(s: String, n: Int) -> [String] {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", " "]
var words: [String] = []
var currentWord = ""
for char in s {
if char != " " {
currentWord += String(char)
} else {
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
currentWord = ""
}
}
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
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: Set<Character> = ["a", "e", "i", "o", "u", " "]
var words: [String] = []
var currentWord = ""
for char in s {
if char != " " {
currentWord += String(char)
} else {
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
currentWord = ""
}
}
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
return words
}
``````
```swift
// Test cases
print(selectWords(s: "Mary had a little lamb", n: 4)) // ["little"]
print(selectWords(s: "Mary had a little lamb", n: 3)) // ["Mary", "lamb"]
print(selectWords(s: "simple white space", n: 2)) // []
print(selectWords(s: "Hello world", n: 4)) // ["world"]
print(selectWords(s: "Uncle sam", n: 3)) // ["Uncle"]
```if currentWord.filter { !vowels.contains($0) }.count == n { // trailing closure in this context is confusable with the body of the statement; pass as a parenthesized argument to silence this warningif currentWord.filter { !vowels.contains($0) }.count == n { // trailing closure in this context is confusable with the body of the statement; pass as a parenthesized argument to silence this warning // XCTAssertTrue failedfunc selectWords(s: String, n: Int) -> [String] {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", " "]
var words: [String] = []
var currentWord = ""
for char in s {
if char != " " {
currentWord += String(char)
} else {
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
currentWord = ""
}
}
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
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: Set<Character> = ["a", "e", "i", "o", "u", " "]
var words: [String] = []
var currentWord = ""
for char in s {
if char != " " {
currentWord += String(char)
} else {
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
currentWord = ""
}
}
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
return words
}
``````
```swift
// Testing the selectWords function
print(selectWords(s: "Mary had a little lamb", n: 4)) // ["little"]
print(selectWords(s: "Mary had a little lamb", n: 3)) // ["Mary", "lamb"]
print(selectWords(s: "simple white space", n: 2)) // []
print(selectWords(s: "Hello world", n: 4)) // ["world"]
print(selectWords(s: "Uncle sam", n: 3)) // ["Uncle"]
```if currentWord.filter { !vowels.contains($0) }.count == n { // trailing closure in this context is confusable with the body of the statement; pass as a parenthesized argument to silence this warningif currentWord.filter { !vowels.contains($0) }.count == n { // trailing closure in this context is confusable with the body of the statement; pass as a parenthesized argument to silence this warning // XCTAssertTrue failedfunc selectWords(s: String, n: Int) -> [String] {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", " "]
var words: [String] = []
var currentWord = ""
for char in s {
if char != " " {
currentWord += String(char)
} else {
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
currentWord = ""
}
}
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
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: Set<Character> = ["a", "e", "i", "o", "u", " "]
var words: [String] = []
var currentWord = ""
for char in s {
if char != " " {
currentWord += String(char)
} else {
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
currentWord = ""
}
}
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
return words
}
``````
```swift
// Testing the function with provided test cases
print(selectWords(s: "Mary had a little lamb", n: 4)) // Expected output: ["little"]
print(selectWords(s: "Mary had a little lamb", n: 3)) // Expected output: ["Mary", "lamb"]
print(selectWords(s: "simple white space", n: 2)) // Expected output: []
print(selectWords(s: "Hello world", n: 4)) // Expected output: ["world"]
print(selectWords(s: "Uncle sam", n: 3)) // Expected output: ["Uncle"]
```if currentWord.filter { !vowels.contains($0) }.count == n { // trailing closure in this context is confusable with the body of the statement; pass as a parenthesized argument to silence this warningif currentWord.filter { !vowels.contains($0) }.count == n { // trailing closure in this context is confusable with the body of the statement; pass as a parenthesized argument to silence this warning // XCTAssertTrue failedfunc selectWords(s: String, n: Int) -> [String] {
let vowels: Set<Character> = ["a", "e", "i", "o", "u", " "]
var words: [String] = []
var currentWord = ""
for char in s {
if char != " " {
currentWord += String(char)
} else {
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
currentWord = ""
}
}
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
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: Set<Character> = ["a", "e", "i", "o", "u", " "]
var words: [String] = []
var currentWord = ""
for char in s {
if char != " " {
currentWord += String(char)
} else {
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
currentWord = ""
}
}
if currentWord.filter { !vowels.contains($0) }.count == n {
words.append(currentWord)
}
return words
}
``````
```swift
// Test cases
print(selectWords(s: "Mary had a little lamb", n: 4)) // ["little"]
print(selectWords(s: "Mary had a little lamb", n: 3)) // ["Mary", "lamb"]
print(selectWords(s: "simple white space", n: 2)) // []
print(selectWords(s: "Hello world", n: 4)) // ["world"]
print(selectWords(s: "Uncle sam", n: 3)) // ["Uncle"]
```if currentWord.filter { !vowels.contains($0) }.count == n { // trailing closure in this context is confusable with the body of the statement; pass as a parenthesized argument to silence this warningif currentWord.filter { !vowels.contains($0) }.count == n { // trailing closure in this context is confusable with the body of the statement; pass as a parenthesized argument to silence this warning // XCTAssertTrue failedfunc getClosestVowel(word: String) -> String {
let vowels = Set<Character>(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for i in stride(from: word.count - 1, through: 1, by: -1) {
let index = word.index(word.startIndex, offsetBy: i)
let char = word[index]
if vowels.contains(char) {
let prevChar = word[word.index(index, offsetBy: -1)]
let nextChar = word[word.index(index, offsetBy: 1)]
if !vowels.contains(prevChar) && !vowels.contains(nextChar) {
result = String(char)
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 = Set<Character>(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for i in stride(from: word.count - 1, through: 1, by: -1) {
let index = word.index(word.startIndex, offsetBy: i)
let char = word[index]
if vowels.contains(char) {
let prevChar = word[word.index(index, offsetBy: -1)]
let nextChar = word[word.index(index, offsetBy: 1)]
if !vowels.contains(prevChar) && !vowels.contains(nextChar) {
result = String(char)
break
}
}
}
return result
}
``````
```swift
// Testing the function
print(getClosestVowel(word: "yogurt")) // Output: "u"
print(getClosestVowel(word: "FULL")) // Output: "U"
print(getClosestVowel(word: "quick")) // Output: ""
print(getClosestVowel(word: "ab")) // Output: ""
``` // Fatal error: String index is out of boundsfunc getClosestVowel(word: String) -> String {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
var maxDistance = 0
for i in stride(from: word.count - 1, through: 1, by: -1) {
let currentChar = String(word[word.index(word.startIndex, offsetBy: i)])
let nextChar = String(word[word.index(word.startIndex, offsetBy: i + 1)])
if !vowels.contains(currentChar) && vowels.contains(nextChar) {
let distance = abs(i - word.count)
if distance > maxDistance {
maxDistance = distance
result = currentChar
}
}
}
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 = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
var maxDistance = 0
for i in stride(from: word.count - 1, through: 1, by: -1) {
let currentChar = String(word[word.index(word.startIndex, offsetBy: i)])
let nextChar = String(word[word.index(word.startIndex, offsetBy: i + 1)])
if !vowels.contains(currentChar) && vowels.contains(nextChar) {
let distance = abs(i - word.count)
if distance > maxDistance {
maxDistance = distance
result = currentChar
}
}
}
return result
}
``````
```swift
// Testing the function
print(getClosestVowel(word: "yogurt")) // Output: "u"
print(getClosestVowel(word: "FULL")) // Output: "U"
print(getClosestVowel(word: "quick")) // Output: ""
print(getClosestVowel(word: "ab")) // Output: ""
``` // Fatal error: String index is out of boundsfunc getClosestVowel(word: String) -> String {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for i in stride(from: word.count - 1, through: 1, by: -1) {
let currentChar = String(word[word.index(word.startIndex, offsetBy: i)])
let previousChar = String(word[word.index(word.startIndex, offsetBy: i - 1)])
if vowels.contains(currentChar) && !vowels.contains(previousChar) {
result = currentChar
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 = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for i in stride(from: word.count - 1, through: 1, by: -1) {
let currentChar = String(word[word.index(word.startIndex, offsetBy: i)])
let previousChar = String(word[word.index(word.startIndex, offsetBy: i - 1)])
if vowels.contains(currentChar) && !vowels.contains(previousChar) {
result = currentChar
break
}
}
return result
}
``````
```python
def getClosestVowel(word):
vowels = set(['a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U'])
result = ''
for i in range(len(word) - 1, 0, -1):
currentChar = word[i]
previousChar = word[i - 1]
if currentChar in vowels and previousChar not in vowels:
result = currentChar
break
return result
``` // XCTAssertTrue failedfunc getClosestVowel(word: String) -> String {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for i in stride(from: word.count - 1, through: 1, by: -1) {
let currentChar = String(word[word.index(word.startIndex, offsetBy: i)])
let nextChar = String(word[word.index(word.startIndex, offsetBy: i + 1)])
if vowels.contains(currentChar) && !vowels.contains(nextChar) {
result = currentChar
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 = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for i in stride(from: word.count - 1, through: 1, by: -1) {
let currentChar = String(word[word.index(word.startIndex, offsetBy: i)])
let nextChar = String(word[word.index(word.startIndex, offsetBy: i + 1)])
if vowels.contains(currentChar) && !vowels.contains(nextChar) {
result = currentChar
break
}
}
return result
}
``````
```python
def getClosestVowel(word):
vowels = set(['a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U'])
result = ''
for i in range(len(word) - 2, 0, -1):
currentChar = word[i]
nextChar = word[i + 1]
if currentChar in vowels and nextChar not in vowels:
result = currentChar
break
return result
print(getClosestVowel('yogurt'))
print(getClosestVowel('FULL'))
print(getClosestVowel('quick'))
print(getClosestVowel('ab'))
``` // Fatal error: String index is out of boundsfunc getClosestVowel(word: String) -> String {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for i in stride(from: word.count - 1, through: 1, by: -1) {
let currentChar = String(word[word.index(word.startIndex, offsetBy: i)])
let nextChar = String(word[word.index(word.startIndex, offsetBy: i + 1)])
if vowels.contains(currentChar) && !vowels.contains(nextChar) {
result = currentChar
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 = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for i in stride(from: word.count - 1, through: 1, by: -1) {
let currentChar = String(word[word.index(word.startIndex, offsetBy: i)])
let nextChar = String(word[word.index(word.startIndex, offsetBy: i + 1)])
if vowels.contains(currentChar) && !vowels.contains(nextChar) {
result = currentChar
break
}
}
return result
}
``````
```python
def getClosestVowel(word):
vowels = set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
result = ""
for i in range(len(word) - 2, 0, -1):
currentChar = word[i]
nextChar = word[i + 1]
if currentChar in vowels and nextChar not in vowels:
result = currentChar
break
return result
``` // Fatal error: String index is out of boundsfunc getClosestVowel(word: String) -> String {
let vowels = Set<Character>(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
var found = false
for char in word.reversed() {
if vowels.contains(char) {
if !found {
found = true
result = String(char)
}
} else if found {
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 = Set<Character>(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
var found = false
for char in word.reversed() {
if vowels.contains(char) {
if !found {
found = true
result = String(char)
}
} else if found {
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 = Set<Character>(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
var found = false
for char in word.reversed() {
if vowels.contains(char) {
if !found {
found = true
result = String(char)
}
} else if found {
break
}
}
return result
}
// Test cases
print(getClosestVowel(word: "yogurt")) // "u"
print(getClosestVowel(word: "FULL")) // "U"
print(getClosestVowel(word: "quick")) // ""
print(getClosestVowel(word: "ab")) // ""
``` // XCTAssertTrue failedfunc getClosestVowel(word: String) -> String {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for i in stride(from: word.count - 1, through: 1, by: -1) {
let currentChar = String(word[word.index(word.startIndex, offsetBy: i)])
let nextChar = String(word[word.index(word.startIndex, offsetBy: i + 1)])
if vowels.contains(currentChar) && !vowels.contains(nextChar) {
result = currentChar
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 = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for i in stride(from: word.count - 1, through: 1, by: -1) {
let currentChar = String(word[word.index(word.startIndex, offsetBy: i)])
let nextChar = String(word[word.index(word.startIndex, offsetBy: i + 1)])
if vowels.contains(currentChar) && !vowels.contains(nextChar) {
result = currentChar
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 = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for i in stride(from: word.count - 1, through: 1, by: -1) {
let currentChar = String(word[word.index(word.startIndex, offsetBy: i)])
let nextChar = String(word[word.index(word.startIndex, offsetBy: i + 1)])
if vowels.contains(currentChar) && !vowels.contains(nextChar) {
result = currentChar
break
}
}
return result
}
``` // Fatal error: String index is out of boundsfunc getClosestVowel(word: String) -> String {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for i in stride(from: word.count - 1, through: 1, by: -1) {
let currentChar = String(word[word.index(word.startIndex, offsetBy: i)])
let nextChar = String(word[word.index(word.startIndex, offsetBy: i + 1)])
if vowels.contains(currentChar) && !vowels.contains(nextChar) {
result = currentChar
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 = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for i in stride(from: word.count - 1, through: 1, by: -1) {
let currentChar = String(word[word.index(word.startIndex, offsetBy: i)])
let nextChar = String(word[word.index(word.startIndex, offsetBy: i + 1)])
if vowels.contains(currentChar) && !vowels.contains(nextChar) {
result = currentChar
break
}
}
return result
}
``````
```swift
// Testing the function
print(getClosestVowel(word: "yogurt")) // Expected output: "u"
print(getClosestVowel(word: "FULL")) // Expected output: "U"
print(getClosestVowel(word: "quick")) // Expected output: ""
print(getClosestVowel(word: "ab")) // Expected output: ""
``` // Fatal error: String index is out of boundsfunc getClosestVowel(word: String) -> String {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for i in stride(from: word.count - 1, through: 1, by: -1) {
let currentChar = String(word[word.index(word.startIndex, offsetBy: i)])
let previousChar = String(word[word.index(word.startIndex, offsetBy: i - 1)])
let nextChar = String(word[word.index(word.startIndex, offsetBy: i + 1)])
if vowels.contains(currentChar) && !vowels.contains(previousChar) && !vowels.contains(nextChar) {
result = currentChar
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 = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for i in stride(from: word.count - 1, through: 1, by: -1) {
let currentChar = String(word[word.index(word.startIndex, offsetBy: i)])
let previousChar = String(word[word.index(word.startIndex, offsetBy: i - 1)])
let nextChar = String(word[word.index(word.startIndex, offsetBy: i + 1)])
if vowels.contains(currentChar) && !vowels.contains(previousChar) && !vowels.contains(nextChar) {
result = currentChar
break
}
}
return result
}
``````
```python
def getClosestVowel(word):
vowels = set(['a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U'])
result = ''
for i in range(len(word) - 2, 0, -1):
currentChar = word[i]
previousChar = word[i - 1]
nextChar = word[i + 1]
if currentChar in vowels and previousChar not in vowels and nextChar not in vowels:
result = currentChar
break
return result
``` // Fatal error: String index is out of boundsfunc getClosestVowel(word: String) -> String {
let vowels = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for i in stride(from: word.count - 1, through: 1, by: -1) {
let currentChar = String(word[word.index(word.startIndex, offsetBy: i)])
let previousChar = String(word[word.index(word.startIndex, offsetBy: i - 1)])
let nextChar = String(word[word.index(word.startIndex, offsetBy: i + 1)])
if vowels.contains(currentChar) && !vowels.contains(previousChar) && !vowels.contains(nextChar) {
result = currentChar
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 = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for i in stride(from: word.count - 1, through: 1, by: -1) {
let currentChar = String(word[word.index(word.startIndex, offsetBy: i)])
let previousChar = String(word[word.index(word.startIndex, offsetBy: i - 1)])
let nextChar = String(word[word.index(word.startIndex, offsetBy: i + 1)])
if vowels.contains(currentChar) && !vowels.contains(previousChar) && !vowels.contains(nextChar) {
result = currentChar
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 = Set(["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"])
var result = ""
for i in stride(from: word.count - 1, through: 1, by: -1) {
let currentChar = String(word[word.index(word.startIndex, offsetBy: i)])
let previousChar = String(word[word.index(word.startIndex, offsetBy: i - 1)])
let nextChar = String(word[word.index(word.startIndex, offsetBy: i + 1)])
if vowels.contains(currentChar) && !vowels.contains(previousChar) && !vowels.contains(nextChar) {
result = currentChar
break
}
}
return result
}
// Test cases
print(getClosestVowel(word: "yogurt")) // "u"
print(getClosestVowel(word: "FULL")) // "U"
print(getClosestVowel(word: "quick")) // ""
print(getClosestVowel(word: "ab")) // ""
``` // Fatal error: String index is out of boundsfunc matchParens(lst: [String]) -> String {
var stack = [Character]()
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else if char == ")" {
if stack.last == "(" {
stack.removeLast()
} else {
stack.append(char)
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}```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 = [Character]()
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else if char == ")" {
if stack.last == "(" {
stack.removeLast()
} else {
stack.append(char)
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}
`````````python
# 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"
def matchParens(lst):
stack = []
result = ""
for string in lst:
for char in string:
if char == "(":
stack.append(char)
else:
if stack and stack[-1] == "(":
stack.pop()
else:
stack.append(char)
if not stack:
result = "Yes"
else:
result = "No"
return result
# Test cases
print(matchParens(lst=["()(", ")"]) == "Yes")
print(matchParens(lst=[")", ")"]) == "No")
``` // XCTAssertTrue failedfunc matchParens(lst: [String]) -> String {
var stack = [Character]()
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else {
if stack.isEmpty {
return "No"
} else {
stack.removeLast()
}
}
}
}
return stack.isEmpty ? "Yes" : "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 = [Character]()
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else {
if stack.isEmpty {
return "No"
} else {
stack.removeLast()
}
}
}
}
return stack.isEmpty ? "Yes" : "No"
}
`````````swift
func matchParens(lst: [String]) -> String {
var stack = [Character]()
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else {
if stack.isEmpty {
return "No"
} else {
stack.removeLast()
}
}
}
}
return stack.isEmpty ? "Yes" : "No"
}
// Test cases
print(matchParens(lst: ["()(", ")"]) == "Yes") // Expected output: Yes
print(matchParens(lst: [")", ")"]) == "No") // Expected output: No
``` // XCTAssertTrue failedfunc matchParens(lst: [String]) -> String {
var stack: [Character] = []
var result = "No"
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else if char == ")" {
if stack.last == "(" {
stack.removeLast()
} else {
stack.append(char)
}
}
}
}
if stack.count == 0 {
result = "Yes"
}
return result
}```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: [Character] = []
var result = "No"
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else if char == ")" {
if stack.last == "(" {
stack.removeLast()
} else {
stack.append(char)
}
}
}
}
if stack.count == 0 {
result = "Yes"
}
return result
}
`````````python
def matchParens(lst):
stack = []
result = "No"
for s in lst:
for c in s:
if c == "(":
stack.append(c)
else:
if stack and stack[-1] == "(":
stack.pop()
else:
stack.append(c)
if not stack:
result = "Yes"
return result
print(matchParens(["()(", ")"]) == "Yes")
print(matchParens([")", ")"]) == "No")
``` // XCTAssertTrue failedfunc matchParens(lst: [String]) -> String {
var stack: [Character] = []
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else {
if stack.isEmpty {
result = "No"
return result
} else {
stack.removeLast()
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}```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: [Character] = []
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else {
if stack.isEmpty {
result = "No"
return result
} else {
stack.removeLast()
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}
`````````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: [Character] = []
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else {
if stack.isEmpty {
result = "No"
return result
} else {
stack.removeLast()
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}
``` // XCTAssertTrue failedfunc matchParens(lst: [String]) -> String {
var stack: [Character] = []
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else if char == ")" {
if stack.last == "(" {
stack.removeLast()
} else {
stack.append(char)
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}```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: [Character] = []
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else if char == ")" {
if stack.last == "(" {
stack.removeLast()
} else {
stack.append(char)
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}
`````````python
# 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"
def matchParens(lst):
stack = []
result = ""
for string in lst:
for char in string:
if char == "(":
stack.append(char)
else:
if stack and stack[-1] == "(":
stack.pop()
else:
stack.append(char)
if not stack:
result = "Yes"
else:
result = "No"
return result
# Test cases
print(matchParens(lst=["()(", ")"]) == "Yes")
print(matchParens(lst=[")", ")"]) == "No")
``` // XCTAssertTrue failedfunc matchParens(lst: [String]) -> String {
var stack: [Character] = []
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else if char == ")" {
if stack.isEmpty {
result = "No"
return result
} else {
stack.removeLast()
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}```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: [Character] = []
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else if char == ")" {
if stack.isEmpty {
result = "No"
return result
} else {
stack.removeLast()
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}
`````````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: [Character] = []
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else if char == ")" {
if stack.isEmpty {
result = "No"
return result
} else {
stack.removeLast()
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}
``` // XCTAssertTrue failedfunc matchParens(lst: [String]) -> String {
var stack = [Character]()
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else if char == ")" {
if stack.last == "(" {
stack.removeLast()
} else {
stack.append(char)
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}```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 = [Character]()
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else if char == ")" {
if stack.last == "(" {
stack.removeLast()
} else {
stack.append(char)
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}
`````````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 = [Character]()
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else if char == ")" {
if stack.last == "(" {
stack.removeLast()
} else {
stack.append(char)
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}
``` // XCTAssertTrue failedfunc matchParens(lst: [String]) -> String {
var stack = [Character]()
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else if char == ")" {
if stack.last == "(" {
stack.removeLast()
} else {
stack.append(char)
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}```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 = [Character]()
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else if char == ")" {
if stack.last == "(" {
stack.removeLast()
} else {
stack.append(char)
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}
`````````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 = [Character]()
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else if char == ")" {
if stack.last == "(" {
stack.removeLast()
} else {
stack.append(char)
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}
``` // XCTAssertTrue failedfunc matchParens(lst: [String]) -> String {
var stack = [Character]()
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else if char == ")" {
if stack.last == "(" {
stack.removeLast()
} else {
stack.append(char)
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}```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 = [Character]()
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else if char == ")" {
if stack.last == "(" {
stack.removeLast()
} else {
stack.append(char)
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}
`````````swift
// Testing the function with provided examples
print(matchParens(lst: ["()(", ")"]) == "Yes")
print(matchParens(lst: [")", ")"]) == "No")
``` // XCTAssertTrue failedfunc matchParens(lst: [String]) -> String {
var stack: [Character] = []
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else if char == ")" {
if stack.last == "(" {
stack.removeLast()
} else {
stack.append(char)
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}```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: [Character] = []
var result = ""
for str in lst {
for char in str {
if char == "(" {
stack.append(char)
} else if char == ")" {
if stack.last == "(" {
stack.removeLast()
} else {
stack.append(char)
}
}
}
}
if stack.isEmpty {
result = "Yes"
} else {
result = "No"
}
return result
}
``````
```swift
// Testing the function with provided test cases
print(matchParens(lst: ["()(", ")"]) == "Yes") // Expected output: true
print(matchParens(lst: [")", ")"]) == "No") // Expected output: true
``` // XCTAssertTrue failedfunc maximum(arr: [Int], k: Int) -> [Int] {
var result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.removeLast()
}
}
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 result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.removeLast()
}
}
return result.sorted()
}
``````
```python
def maximum(arr, k):
result = []
for num in arr:
result.append(num)
if len(result) > k:
result.pop()
return sorted(result)
print(maximum([-3, -4, 5], 3))
print(maximum([4, -4, 4], 2))
print(maximum([-3, 2, 1, 2, -1, -2, 1], 1))
``` // XCTAssertTrue failedfunc maximum(arr: [Int], k: Int) -> [Int] {
var result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.remove(at: result.index(result.firstIndex(of: result.max()!)!)
}
}
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 result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.remove(at: result.index(result.firstIndex(of: result.max()!)!)
}
}
return result.sorted()
}
``````
```python
def maximum(arr, k):
result = []
for num in arr:
result.append(num)
if len(result) > k:
result.remove(max(result))
return sorted(result)
print(maximum([-3, -4, 5], 3))
print(maximum([4, -4, 4], 2))
print(maximum([-3, 2, 1, 2, -1, -2, 1], 1))
```result.remove(at: result.index(result.firstIndex(of: result.max()!)!) // no exact matches in call to instance method 'index'} // expected ')' in expression listfunc maximum(arr: [Int], k: Int) -> [Int] {
var result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.remove(at: result.index(result.firstIndex(of: result.max()!)!)
}
}
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 result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.remove(at: result.index(result.firstIndex(of: result.max()!)!)
}
}
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 result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.remove(at: result.index(result.firstIndex(of: result.max()!)!)
}
}
return result.sorted()
}
```result.remove(at: result.index(result.firstIndex(of: result.max()!)!) // no exact matches in call to instance method 'index'} // expected ')' in expression listfunc maximum(arr: [Int], k: Int) -> [Int] {
var result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.remove(at: result.index(result.firstIndex(of: result.max()!)!)
}
}
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 result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.remove(at: result.index(result.firstIndex(of: result.max()!)!)
}
}
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 result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.remove(at: result.index(result.firstIndex(of: result.max()!)!)
}
}
return result.sorted()
}
```result.remove(at: result.index(result.firstIndex(of: result.max()!)!) // no exact matches in call to instance method 'index'} // expected ')' in expression listfunc maximum(arr: [Int], k: Int) -> [Int] {
var result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.remove(at: result.index(result.firstIndex(of: result.max()!)!)
}
}
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 result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.remove(at: result.index(result.firstIndex(of: result.max()!)!)
}
}
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 result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.remove(at: result.index(result.firstIndex(of: result.max()!)!)
}
}
return result.sorted()
}
```result.remove(at: result.index(result.firstIndex(of: result.max()!)!) // no exact matches in call to instance method 'index'} // expected ')' in expression listfunc maximum(arr: [Int], k: Int) -> [Int] {
var result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.removeLast()
}
}
return result.sorted(by: >)
}```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]()
for num in arr {
result.append(num)
if result.count > k {
result.removeLast()
}
}
return result.sorted(by: >)
}
`````````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]()
for num in arr {
result.append(num)
if result.count > k {
result.removeLast()
}
}
return result.sorted(by: >)
}
``` // XCTAssertTrue failedfunc maximum(arr: [Int], k: Int) -> [Int] {
var result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.removeLast()
}
}
return result.sorted(by: >)
}```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]()
for num in arr {
result.append(num)
if result.count > k {
result.removeLast()
}
}
return result.sorted(by: >)
}
``````
```python
def maximum(arr, k):
result = []
for num in arr:
result.append(num)
if len(result) > k:
result.pop()
return sorted(result, reverse=True)
``` // XCTAssertTrue failedfunc maximum(arr: [Int], k: Int) -> [Int] {
var result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.removeLast()
}
}
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 result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.removeLast()
}
}
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 result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.removeLast()
}
}
return result.sorted()
}
``` // XCTAssertTrue failedfunc maximum(arr: [Int], k: Int) -> [Int] {
var result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.removeLast()
}
}
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 result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.removeLast()
}
}
return result.sorted()
}
`````````python
def maximum(arr, k):
result = []
for num in arr:
result.append(num)
if len(result) > k:
result.pop()
return sorted(result)
print(maximum([-3, -4, 5], 3))
print(maximum([4, -4, 4], 2))
print(maximum([-3, 2, 1, 2, -1, -2, 1], 1))
``` // XCTAssertTrue failedfunc maximum(arr: [Int], k: Int) -> [Int] {
var result = [Int]()
for num in arr {
result.append(num)
if result.count > k {
result.removeLast()
}
}
return result.sorted(by: >)
}```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]()
for num in arr {
result.append(num)
if result.count > k {
result.removeLast()
}
}
return result.sorted(by: >)
}
``````
```python
def maximum(arr, k):
result = []
for num in arr:
result.append(num)
if len(result) > k:
result.pop()
return sorted(result, reverse=True)
print(maximum([-3, -4, 5], 3))
print(maximum([4, -4, 4], 2))
print(maximum([-3, 2, 1, 2, -1, -2, 1], 1))
``` // XCTAssertTrue failedfunc solution(lst: [Int]) -> Int {
var sum = 0
for i in 0..<lst.count {
if i % 2 == 0 && lst[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 && lst[i] % 2 != 0 {
sum += lst[i]
}
}
return sum
}
``````
```python
# Given a non-empty array of integers, return the sum of all of the odd elements that are in even positions.
# Examples
# solution([5, 8, 7, 1]) == 12
# solution([3, 3, 3, 3, 3]) == 9
# solution([30, 13, 24, 321]) == 0
def solution(lst):
sum = 0
for i in range(len(lst)):
if i % 2 == 0 and lst[i] % 2 != 0:
sum += lst[i]
return sum
```func solution(lst: [Int]) -> Int {
var sum = 0
for i in 0..<lst.count {
if i % 2 == 0 && lst[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 && lst[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 && lst[i] % 2 != 0 {
sum += lst[i]
}
}
return sum
}
```func solution(lst: [Int]) -> Int {
var sum = 0
for i in 0..<lst.count {
if i % 2 == 0 && lst[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 && lst[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 && lst[i] % 2 != 0 {
sum += lst[i]
}
}
return sum
}
// Test cases
print(solution(lst: [5, 8, 7, 1])) // 12
print(solution(lst: [3, 3, 3, 3, 3])) // 9
print(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 && lst[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 && lst[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 && lst[i] % 2 != 0 {
sum += lst[i]
}
}
return sum
}
```func solution(lst: [Int]) -> Int {
var sum = 0
for i in 0..<lst.count {
if i % 2 == 0 && lst[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 && lst[i] % 2 != 0 {
sum += lst[i]
}
}
return sum
}
`````````python
def solution(lst):
sum = 0
for i in range(len(lst)):
if i % 2 == 0 and lst[i] % 2 != 0:
sum += lst[i]
return sum
print(solution([5, 8, 7, 1])) # 12
print(solution([3, 3, 3, 3, 3])) # 9
print(solution([30, 13, 24, 321])) # 0
```func solution(lst: [Int]) -> Int {
var sum = 0
for i in 0..<lst.count {
if i % 2 == 0 && lst[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 && lst[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 && lst[i] % 2 != 0 {
sum += lst[i]
}
}
return sum
}
```func solution(lst: [Int]) -> Int {
var sum = 0
for i in 0..<lst.count {
if i % 2 == 0 && lst[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 && lst[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 && lst[i] % 2 != 0 {
sum += lst[i]
}
}
return sum
}
```func solution(lst: [Int]) -> Int {
return lst.enumerated().filter { $0.offset % 2 == 0 && $0.element % 2 == 1 }.map { $0.element }.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.enumerated().filter { $0.offset % 2 == 0 && $0.element % 2 == 1 }.map { $0.element }.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.enumerated().filter { $0.offset % 2 == 0 && $0.element % 2 == 1 }.map { $0.element }.reduce(0, +)
}
```func solution(lst: [Int]) -> Int {
var sum = 0
for i in 0..<lst.count {
if i % 2 == 0 && lst[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 && lst[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 && lst[i] % 2 != 0 {
sum += lst[i]
}
}
return sum
}
```func solution(lst: [Int]) -> Int {
var sum = 0
for i in 0..<lst.count {
if i % 2 == 0 && lst[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 && lst[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 && lst[i] % 2 != 0 {
sum += lst[i]
}
}
return sum
}
// Test cases
print(solution(lst: [5, 8, 7, 1])) // 12
print(solution(lst: [3, 3, 3, 3, 3])) // 9
print(solution(lst: [30, 13, 24, 321])) // 0
```func addElements(arr: [Int], k: Int) -> Int {
var sum = 0
for i in 0..<k {
if arr[i] >= 0 && arr[i] <= 99 {
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
for i in 0..<k {
if arr[i] >= 0 && arr[i] <= 99 {
sum += arr[i]
}
}
return sum
}
``````python
def addElements(arr, k):
sum = 0
for i in range(k):
if arr[i] >= 0 and arr[i] <= 99:
sum += arr[i]
return sum
print(addElements([111, 21, 3, 4000, 5, 6, 7, 8, 9], 4))
``` // XCTAssertTrue failedfunc addElements(arr: [Int], k: Int) -> Int {
var sum = 0
for i in 0..<k {
if arr[i] >= 0 && arr[i] <= 99 {
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
for i in 0..<k {
if arr[i] >= 0 && arr[i] <= 99 {
sum += arr[i]
}
}
return sum
}
``````python
def addElements(arr, k):
sum = 0
for i in range(k):
if arr[i] >= 0 and arr[i] <= 99:
sum += arr[i]
return sum
addElements([111, 21, 3, 4000, 5, 6, 7, 8, 9], 4)
``` // XCTAssertTrue failedfunc addElements(arr: [Int], k: Int) -> Int {
var sum = 0
for i in 0..<k {
if arr[i] >= 0 && arr[i] <= 99 {
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
for i in 0..<k {
if arr[i] >= 0 && arr[i] <= 99 {
sum += arr[i]
}
}
return sum
}
``````python
def addElements(arr, k):
sum = 0
for i in range(k):
if arr[i] >= 0 and arr[i] <= 99:
sum += arr[i]
return sum
addElements([111, 21, 3, 4000, 5, 6, 7, 8, 9], 4)
``` // XCTAssertTrue failedfunc addElements(arr: [Int], k: Int) -> Int {
var sum = 0
for i in 0..<k {
if arr[i] >= 0 && arr[i] <= 99 {
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
for i in 0..<k {
if arr[i] >= 0 && arr[i] <= 99 {
sum += arr[i]
}
}
return sum
}
``````python
def addElements(arr, k):
sum = 0
for i in range(k):
if arr[i] >= 0 and arr[i] <= 99:
sum += arr[i]
return sum
addElements([111, 21, 3, 4000, 5, 6, 7, 8, 9], 4)
``` // XCTAssertTrue failedfunc addElements(arr: [Int], k: Int) -> Int {
var sum = 0
for i in 0..<k {
if arr[i] >= 10 && arr[i] <= 99 {
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
for i in 0..<k {
if arr[i] >= 10 && arr[i] <= 99 {
sum += arr[i]
}
}
return sum
}
``````python
# 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
def addElements(arr, k):
sum = 0
for i in range(k):
if arr[i] >= 10 and arr[i] <= 99:
sum += arr[i]
return sum
# Test the function
print(addElements([111, 21, 3, 4000, 5, 6, 7, 8, 9], 4))
``` // XCTAssertTrue failedfunc addElements(arr: [Int], k: Int) -> Int {
var sum = 0
for i in 0..<k {
if arr[i] >= 0 && arr[i] <= 99 {
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
for i in 0..<k {
if arr[i] >= 0 && arr[i] <= 99 {
sum += arr[i]
}
}
return sum
}
``````python
def addElements(arr, k):
sum = 0
for i in range(k):
if arr[i] >= 0 and arr[i] <= 99:
sum += arr[i]
return sum
addElements([111, 21, 3, 4000, 5, 6, 7, 8, 9], 4)
``` // XCTAssertTrue failedfunc addElements(arr: [Int], k: Int) -> Int {
var sum = 0
for i in 0..<k {
if arr[i] >= 0 && arr[i] <= 99 {
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
for i in 0..<k {
if arr[i] >= 0 && arr[i] <= 99 {
sum += arr[i]
}
}
return sum
}
``````python
def add_elements(arr, k):
sum = 0
for i in range(k):
if arr[i] >= 0 and arr[i] <= 99:
sum += arr[i]
return sum
add_elements([111, 21, 3, 4000, 5, 6, 7, 8, 9], 4)
``` // XCTAssertTrue failedfunc addElements(arr: [Int], k: Int) -> Int {
var sum = 0
for i in 0..<k {
if arr[i] >= 0 && arr[i] <= 99 {
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
for i in 0..<k {
if arr[i] >= 0 && arr[i] <= 99 {
sum += arr[i]
}
}
return sum
}
``````python
def addElements(arr, k):
sum = 0
for i in range(k):
if arr[i] >= 0 and arr[i] <= 99:
sum += arr[i]
return sum
addElements([111, 21, 3, 4000, 5, 6, 7, 8, 9], 4)
``` // XCTAssertTrue failedfunc addElements(arr: [Int], k: Int) -> Int {
var sum = 0
for i in 0..<k {
if arr[i] >= 10 && arr[i] <= 99 {
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
for i in 0..<k {
if arr[i] >= 10 && arr[i] <= 99 {
sum += arr[i]
}
}
return sum
}
``````python
def addElements(arr, k):
sum = 0
for i in range(k):
if arr[i] >= 10 and arr[i] <= 99:
sum += arr[i]
return sum
addElements([111, 21, 3, 4000, 5, 6, 7, 8, 9], 4)
``` // XCTAssertTrue failedfunc addElements(arr: [Int], k: Int) -> Int {
var sum = 0
for i in 0..<k {
if arr[i] >= 0 && arr[i] <= 99 {
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
for i in 0..<k {
if arr[i] >= 0 && arr[i] <= 99 {
sum += arr[i]
}
}
return sum
}
``````python
def addElements(arr, k):
sum = 0
for i in range(k):
if arr[i] >= 0 and arr[i] <= 99:
sum += arr[i]
return sum
addElements([111, 21, 3, 4000, 5, 6, 7, 8, 9], 4)
``` // XCTAssertTrue failedfunc getOddCollatz(n: Int) -> [Int] {
var collatz = [Int]()
var num = n
while num != 1 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}```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 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}
``````
```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 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}
```func getOddCollatz(n: Int) -> [Int] {
var collatz = [Int]()
var num = n
while num != 1 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}```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 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}
``````
```swift
func getOddCollatz(n: Int) -> [Int] {
var collatz = [Int]()
var num = n
while num != 1 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}
getOddCollatz(n: 5)
```func getOddCollatz(n: Int) -> [Int] {
var collatz = [Int]()
var num = n
while num != 1 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}```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 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}
``````
```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 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}
```func getOddCollatz(n: Int) -> [Int] {
var collatz = [Int]()
var num = n
while num != 1 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}```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 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}
``````
```swift
// Test cases
print(getOddCollatz(n: 5)) // [1, 5]
print(getOddCollatz(n: 10)) // [1, 10]
print(getOddCollatz(n: 15)) // [1, 15]
print(getOddCollatz(n: 20)) // [1, 20]
print(getOddCollatz(n: 25)) // [1, 25]
```func getOddCollatz(n: Int) -> [Int] {
var collatz = [Int]()
var num = n
while num != 1 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}```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 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}
``````
```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 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}
```func getOddCollatz(n: Int) -> [Int] {
var collatz = [Int]()
var num = n
while num != 1 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}```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 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}
``````
```swift
func getOddCollatz(n: Int) -> [Int] {
var collatz = [Int]()
var num = n
while num != 1 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}
getOddCollatz(n: 5)
```func getOddCollatz(n: Int) -> [Int] {
var collatz = [Int]()
var num = n
while num != 1 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}```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 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}
``````
```swift
func getOddCollatz(n: Int) -> [Int] {
var collatz = [Int]()
var num = n
while num != 1 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}
getOddCollatz(n: 5)
```func getOddCollatz(n: Int) -> [Int] {
var collatz = [Int]()
var num = n
while num != 1 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}```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 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}
``````
```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 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}
```func getOddCollatz(n: Int) -> [Int] {
var collatz = [Int]()
var num = n
while num != 1 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}```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 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}
getOddCollatz(n: 5)
`````````python
def get_odd_collatz(n):
collatz = []
while n != 1:
if n % 2 == 1:
collatz.append(n)
n = n // 2 if n % 2 == 0 else n * 3 + 1
collatz.append(1)
return sorted(collatz)
get_odd_collatz(5)
```func getOddCollatz(n: Int) -> [Int] {
var collatz = [Int]()
var num = n
while num != 1 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}```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 {
if num % 2 == 1 {
collatz.append(num)
}
num = num % 2 == 0 ? num / 2 : num * 3 + 1
}
collatz.append(1)
return collatz.sorted()
}
``````
```python
def get_odd_collatz(n):
collatz = []
while n != 1:
if n % 2 == 1:
collatz.append(n)
n = n // 2 if n % 2 == 0 else n * 3 + 1
collatz.append(1)
return sorted(collatz)
get_odd_collatz(5)
```func validDate(date: String) -> Bool {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.calendar = Calendar(identifier: .gregorian)
if date.isEmpty {
return false
}
if let date = dateFormatter.date(from: date) {
let calendar = Calendar(identifier: .gregorian)
let components = calendar.component(.month, from: date)
let month = components.month
let day = components.day
if month < 1 || month > 12 {
return false
}
if month == 2 {
if day < 1 || day > 29 {
return false
}
} else if [4, 6, 9, 11].contains(month) {
if day < 1 || day > 30 {
return false
}
} else {
if day < 1 || day > 31 {
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 {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.calendar = Calendar(identifier: .gregorian)
if date.isEmpty {
return false
}
if let date = dateFormatter.date(from: date) {
let calendar = Calendar(identifier: .gregorian)
let components = calendar.component(.month, from: date)
let month = components.month
let day = components.day
if month < 1 || month > 12 {
return false
}
if month == 2 {
if day < 1 || day > 29 {
return false
}
} else if [4, 6, 9, 11].contains(month) {
if day < 1 || day > 30 {
return false
}
} else {
if day < 1 || day > 31 {
return false
}
}
return true
}
return false
}
``````
```python
# 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
def validDate(date: str) -> bool:
if date == "":
return False
date_parts = date.split("-")
if len(date_parts) != 3:
return False
month = int(date_parts[0])
day = int(date_parts[1])
year = int(date_parts[2])
if month < 1 or month > 12:
return False
if month == 2:
if day < 1 or day > 29:
return False
elif month in [4, 6, 9, 11]:
if day < 1 or day > 30:
return False
else:
if day < 1 or day > 31:
return False
return True
print(validDate(date="03-11-2000")) # True
print(validDate(date="15-01-2012")) # False
print(validDate(date="04-0-2040")) # False
print(validDate(date="06-04-2020")) # True
print(validDate(date="06/04/2020")) # False
```let month = components.month // value of type 'Int' has no member 'month'let day = components.day // value of type 'Int' has no member 'day'func validDate(date: String) -> Bool {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.calendar = Calendar(identifier: .gregorian)
if let date = dateFormatter.date(from: date) {
let components = dateFormatter.dateComponents([.month, .day, .year], from: date)
let month = components.month ?? 0
let day = components.day ?? 0
let year = components.year ?? 0
if month == 2 && day > 29 {
return false
}
if [1,3,5,7,8,10,12].contains(month) && day > 31 {
return false
}
if [4,6,9,11].contains(month) && day > 30 {
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 {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.calendar = Calendar(identifier: .gregorian)
if let date = dateFormatter.date(from: date) {
let components = dateFormatter.dateComponents([.month, .day, .year], from: date)
let month = components.month ?? 0
let day = components.day ?? 0
let year = components.year ?? 0
if month == 2 && day > 29 {
return false
}
if [1,3,5,7,8,10,12].contains(month) && day > 31 {
return false
}
if [4,6,9,11].contains(month) && day > 30 {
return false
}
return true
}
return false
}
``````
```swift
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
```let components = dateFormatter.dateComponents([.month, .day, .year], from: date) // reference to member 'year' cannot be resolved without a contextual typelet components = dateFormatter.dateComponents([.month, .day, .year], from: date) // reference to member 'day' cannot be resolved without a contextual typelet components = dateFormatter.dateComponents([.month, .day, .year], from: date) // reference to member 'month' cannot be resolved without a contextual typelet components = dateFormatter.dateComponents([.month, .day, .year], from: date) // value of type 'DateFormatter' has no member 'dateComponents'func validDate(date: String) -> Bool {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.timeZone = TimeZone(secondsFromGMT: 0)
dateFormatter.calendar = Calendar(identifier: .gregorian)
if let date = dateFormatter.date(from: date) {
let components = dateFormatter.dateComponents([.month, .day, .year], from: date)
let month = components.month ?? 0
let day = components.day ?? 0
let year = components.year ?? 0
if month == 2 && day > 29 {
return false
}
if [1,3,5,7,8,10,12].contains(month) && day > 31 {
return false
}
if [4,6,9,11].contains(month) && day > 30 {
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 {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.timeZone = TimeZone(secondsFromGMT: 0)
dateFormatter.calendar = Calendar(identifier: .gregorian)
if let date = dateFormatter.date(from: date) {
let components = dateFormatter.dateComponents([.month, .day, .year], from: date)
let month = components.month ?? 0
let day = components.day ?? 0
let year = components.year ?? 0
if month == 2 && day > 29 {
return false
}
if [1,3,5,7,8,10,12].contains(month) && day > 31 {
return false
}
if [4,6,9,11].contains(month) && day > 30 {
return false
}
return true
}
return false
}
``````
```swift
// Test cases
print(validDate(date: "03-11-2000")) // true
print(validDate(date: "15-01-2012")) // false
print(validDate(date: "04-0-2040")) // false
print(validDate(date: "06-04-2020")) // true
print(validDate(date: "06/04/2020")) // false
```let components = dateFormatter.dateComponents([.month, .day, .year], from: date) // reference to member 'year' cannot be resolved without a contextual typelet components = dateFormatter.dateComponents([.month, .day, .year], from: date) // reference to member 'day' cannot be resolved without a contextual typelet components = dateFormatter.dateComponents([.month, .day, .year], from: date) // reference to member 'month' cannot be resolved without a contextual typelet components = dateFormatter.dateComponents([.month, .day, .year], from: date) // value of type 'DateFormatter' has no member 'dateComponents'func validDate(date: String) -> Bool {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.timeZone = TimeZone(secondsFromGMT: 0)
dateFormatter.calendar = Calendar(identifier: .gregorian)
if date.isEmpty {
return false
}
if let date = dateFormatter.date(from: date) {
let calendar = Calendar(identifier: .gregorian)
let components = calendar.dateComponents([.month, .day, .year], from: date)
let month = components.month ?? 0
let day = components.day ?? 0
let year = components.year ?? 0
if month < 1 || month > 12 {
return false
}
if day < 1 {
return false
}
if month == 2 {
if day > 29 {
return false
}
} else if [4, 6, 9, 11].contains(month) {
if day > 30 {
return false
}
} else {
if day > 31 {
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 {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.timeZone = TimeZone(secondsFromGMT: 0)
dateFormatter.calendar = Calendar(identifier: .gregorian)
if date.isEmpty {
return false
}
if let date = dateFormatter.date(from: date) {
let calendar = Calendar(identifier: .gregorian)
let components = calendar.dateComponents([.month, .day, .year], from: date)
let month = components.month ?? 0
let day = components.day ?? 0
let year = components.year ?? 0
if month < 1 || month > 12 {
return false
}
if day < 1 {
return false
}
if month == 2 {
if day > 29 {
return false
}
} else if [4, 6, 9, 11].contains(month) {
if day > 30 {
return false
}
} else {
if day > 31 {
return false
}
}
return true
}
return false
}
``````let year = components.year ?? 0 // initialization of immutable value 'year' was never used; consider replacing with assignment to '_' or removing it // XCTAssertTrue failedfunc validDate(date: String) -> Bool {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.calendar = Calendar(identifier: .gregorian)
if date.isEmpty {
return false
}
if let date = dateFormatter.date(from: date) {
let calendar = Calendar(identifier: .gregorian)
let components = calendar.dateComponents([.month, .day, .year], from: date)
let month = components.month ?? 0
let day = components.day ?? 0
let year = components.year ?? 0
if month < 1 || month > 12 {
return false
}
if month == 2 {
if day < 1 || day > 29 {
return false
}
} else if [4, 6, 9, 11].contains(month) {
if day < 1 || day > 30 {
return false
}
} else {
if day < 1 || day > 31 {
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 {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.calendar = Calendar(identifier: .gregorian)
if date.isEmpty {
return false
}
if let date = dateFormatter.date(from: date) {
let calendar = Calendar(identifier: .gregorian)
let components = calendar.dateComponents([.month, .day, .year], from: date)
let month = components.month ?? 0
let day = components.day ?? 0
let year = components.year ?? 0
if month < 1 || month > 12 {
return false
}
if month == 2 {
if day < 1 || day > 29 {
return false
}
} else if [4, 6, 9, 11].contains(month) {
if day < 1 || day > 30 {
return false
}
} else {
if day < 1 || day > 31 {
return false
}
}
return true
}
return false
}
`````````swift
// Testing the validDate function
print(validDate(date: "03-11-2000")) // true
print(validDate(date: "15-01-2012")) // false
print(validDate(date: "04-0-2040")) // false
print(validDate(date: "06-04-2020")) // true
print(validDate(date: "06/04/2020")) // false
```let year = components.year ?? 0 // initialization of immutable value 'year' was never used; consider replacing with assignment to '_' or removing it // XCTAssertTrue failedfunc validDate(date: String) -> Bool {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.calendar = Calendar(identifier: .gregorian)
if let date = dateFormatter.date(from: date) {
let components = dateFormatter.dateComponents([.month, .day, .year], from: date)
let month = components.month ?? 0
let day = components.day ?? 0
let year = components.year ?? 0
if month == 2 && day > 29 {
return false
} else if [4,6,9,11].contains(month) && day > 30 {
return false
} else if [1,3,5,7,8,10,12].contains(month) && day > 31 {
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 {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.calendar = Calendar(identifier: .gregorian)
if let date = dateFormatter.date(from: date) {
let components = dateFormatter.dateComponents([.month, .day, .year], from: date)
let month = components.month ?? 0
let day = components.day ?? 0
let year = components.year ?? 0
if month == 2 && day > 29 {
return false
} else if [4,6,9,11].contains(month) && day > 30 {
return false
} else if [1,3,5,7,8,10,12].contains(month) && day > 31 {
return false
}
return true
}
return false
}
``````
```python
# 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
def validDate(date: str) -> bool:
if date == "":
return False
date_parts = date.split("-")
if len(date_parts) != 3:
return False
month = int(date_parts[0])
day = int(date_parts[1])
year = int(date_parts[2])
if month < 1 or month > 12:
return False
if month == 2:
if day < 1 or day > 29:
return False
elif month in [4, 6, 9, 11]:
if day < 1 or day > 30:
return False
else:
if day < 1 or day > 31:
return False
return True
```let components = dateFormatter.dateComponents([.month, .day, .year], from: date) // reference to member 'year' cannot be resolved without a contextual typelet components = dateFormatter.dateComponents([.month, .day, .year], from: date) // reference to member 'day' cannot be resolved without a contextual typelet components = dateFormatter.dateComponents([.month, .day, .year], from: date) // reference to member 'month' cannot be resolved without a contextual typelet components = dateFormatter.dateComponents([.month, .day, .year], from: date) // value of type 'DateFormatter' has no member 'dateComponents'func validDate(date: String) -> Bool {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.timeZone = TimeZone(secondsFromGMT: 0)
dateFormatter.calendar = Calendar(identifier: .gregorian)
do {
let date = dateFormatter.date(from: date)
return true
} catch {
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"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.timeZone = TimeZone(secondsFromGMT: 0)
dateFormatter.calendar = Calendar(identifier: .gregorian)
do {
let date = dateFormatter.date(from: date)
return true
} catch {
return false
}
}
`````````python
// 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"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.timeZone = TimeZone(secondsFromGMT: 0)
dateFormatter.calendar = Calendar(identifier: .gregorian)
do {
let date = dateFormatter.date(from: date)
return true
} catch {
return false
}
}
```let date = dateFormatter.date(from: date) // initialization of immutable value 'date' was never used; consider replacing with assignment to '_' or removing it} catch { // 'catch' block is unreachable because no errors are thrown in 'do' block // XCTAssertTrue failedfunc validDate(date: String) -> Bool {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.calendar = Calendar(identifier: .gregorian)
dateFormatter.timeZone = TimeZone(secondsFromGMT: 0)
if let date = dateFormatter.date(from: date) {
let calendar = Calendar(identifier: .gregorian)
let components = calendar.dateComponents([.month, .day, .year], from: date)
let month = components.month ?? 0
let day = components.day ?? 0
let year = components.year ?? 0
if month == 2 && day > 29 {
return false
}
if [1, 3, 5, 7, 8, 10, 12].contains(month) && day > 31 {
return false
}
if [4, 6, 9, 11].contains(month) && day > 30 {
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 {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.calendar = Calendar(identifier: .gregorian)
dateFormatter.timeZone = TimeZone(secondsFromGMT: 0)
if let date = dateFormatter.date(from: date) {
let calendar = Calendar(identifier: .gregorian)
let components = calendar.dateComponents([.month, .day, .year], from: date)
let month = components.month ?? 0
let day = components.day ?? 0
let year = components.year ?? 0
if month == 2 && day > 29 {
return false
}
if [1, 3, 5, 7, 8, 10, 12].contains(month) && day > 31 {
return false
}
if [4, 6, 9, 11].contains(month) && day > 30 {
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 {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.calendar = Calendar(identifier: .gregorian)
dateFormatter.timeZone = TimeZone(secondsFromGMT: 0)
if let date = dateFormatter.date(from: date) {
let calendar = Calendar(identifier: .gregorian)
let components = calendar.dateComponents([.month, .day, .year], from: date)
let month = components.month ?? 0
let day = components.day ?? 0
let year = components.year ?? 0
if month == 2 && day > 29 {
return false
}
if [1, 3, 5, 7, 8, 10, 12].contains(month) && day > 31 {
return false
}
if [4, 6, 9, 11].contains(month) && day > 30 {
return false
}
return true
}
return false
}
```let year = components.year ?? 0 // initialization of immutable value 'year' was never used; consider replacing with assignment to '_' or removing it // XCTAssertTrue failedfunc validDate(date: String) -> Bool {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.calendar = Calendar(identifier: .gregorian)
if date.isEmpty {
return false
}
if let date = dateFormatter.date(from: date) {
let calendar = Calendar(identifier: .gregorian)
let components = calendar.dateComponents([.month, .day, .year], from: date)
let month = components.month ?? 0
let day = components.day ?? 0
let year = components.year ?? 0
if month < 1 || month > 12 {
return false
}
if month == 2 {
if day < 1 || day > 29 {
return false
}
} else if [4, 6, 9, 11].contains(month) {
if day < 1 || day > 30 {
return false
}
} else {
if day < 1 || day > 31 {
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 {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.calendar = Calendar(identifier: .gregorian)
if date.isEmpty {
return false
}
if let date = dateFormatter.date(from: date) {
let calendar = Calendar(identifier: .gregorian)
let components = calendar.dateComponents([.month, .day, .year], from: date)
let month = components.month ?? 0
let day = components.day ?? 0
let year = components.year ?? 0
if month < 1 || month > 12 {
return false
}
if month == 2 {
if day < 1 || day > 29 {
return false
}
} else if [4, 6, 9, 11].contains(month) {
if day < 1 || day > 30 {
return false
}
} else {
if day < 1 || day > 31 {
return false
}
}
return true
}
return false
}
``````
```python
# 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
def validDate(date: str) -> bool:
if date == "":
return False
date_parts = date.split("-")
if len(date_parts) != 3:
return False
month = int(date_parts[0])
day = int(date_parts[1])
year = int(date_parts[2])
if month < 1 or month > 12:
return False
if month == 2:
if day < 1 or day > 29:
return False
elif month in [4, 6, 9, 11]:
if day < 1 or day > 30:
return False
else:
if day < 1 or day > 31:
return False
return True
```let year = components.year ?? 0 // initialization of immutable value 'year' was never used; consider replacing with assignment to '_' or removing it // XCTAssertTrue failedfunc validDate(date: String) -> Bool {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.calendar = Calendar(identifier: .gregorian)
do {
let date = dateFormatter.date(from: date)
return true
} catch {
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"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.calendar = Calendar(identifier: .gregorian)
do {
let date = dateFormatter.date(from: date)
return true
} catch {
return false
}
}
``````let date = dateFormatter.date(from: date) // initialization of immutable value 'date' was never used; consider replacing with assignment to '_' or removing it} catch { // 'catch' block is unreachable because no errors are thrown in 'do' block // XCTAssertTrue failedextension 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> {
if txt.contains(",") {
return .success(txt.components(separatedBy: ","))
} else if txt.contains(" ") {
return .success(txt.components(separatedBy: " "))
} else {
let lowerCaseLetters = txt.lowercased().filter { $0.isLetter }
let oddOrderLetters = lowerCaseLetters.filter { (lowerCaseLetters.filter { $0 == $1 }.count) % 2 == 1 }
return .failure(oddOrderLetters.count)
}
}
func splitWords(txt: String) -> Result<[String], Int> {
if txt.contains(",") {
return .success(txt.components(separatedBy: ","))
} else if txt.contains(" ") {
return .success(txt.components(separatedBy: " "))
} else {
let lowerCaseLetters = txt.lowercased().filter { $0.isLetter }
let oddOrderLetters = lowerCaseLetters.filter { (lowerCaseLetters.filter { $0 == $1 }.count) % 2 == 1 }
return .failure(oddOrderLetters.count)
}
}```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> {
if txt.contains(",") {
return .success(txt.components(separatedBy: ","))
} else if txt.contains(" ") {
return .success(txt.components(separatedBy: " "))
} else {
let lowerCaseLetters = txt.lowercased().filter { $0.isLetter }
let oddOrderLetters = lowerCaseLetters.filter { (lowerCaseLetters.filter { $0 == $1 }.count) % 2 == 1 }
return .failure(oddOrderLetters.count)
}
}
// 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> {
if txt.contains(",") {
return .success(txt.components(separatedBy: ","))
} else if txt.contains(" ") {
return .success(txt.components(separatedBy: " "))
} else {
let lowerCaseLetters = txt.lowercased().filter { $0.isLetter }
let oddOrderLetters = lowerCaseLetters.filter { (lowerCaseLetters.filter { $0 == $1 }.count) % 2 == 1 }
return .failure(oddOrderLetters.count)
}
}
``````extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'let oddOrderLetters = lowerCaseLetters.filter { (lowerCaseLetters.filter { $0 == $1 }.count) % 2 == 1 } // contextual type for closure argument list expects 1 argument, which cannot be implicitly ignoredlet oddOrderLetters = lowerCaseLetters.filter { (lowerCaseLetters.filter { $0 == $1 }.count) % 2 == 1 } // contextual closure type '(String.Element) throws -> Bool' (aka '(Character) throws -> Bool') expects 1 argument, but 2 were used in closure bodyfunc splitWords(txt: String) -> Result<[String], Int> { // invalid redeclaration of 'splitWords(txt:)'let oddOrderLetters = lowerCaseLetters.filter { (lowerCaseLetters.filter { $0 == $1 }.count) % 2 == 1 } // contextual type for closure argument list expects 1 argument, which cannot be implicitly ignoredlet oddOrderLetters = lowerCaseLetters.filter { (lowerCaseLetters.filter { $0 == $1 }.count) % 2 == 1 } // contextual closure type '(String.Element) throws -> Bool' (aka '(Character) throws -> Bool') expects 1 argument, but 2 were used in closure bodyextension 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> {
if txt.contains(",") {
return .success(txt.components(separatedBy: ","))
} else if txt.contains(" ") {
return .success(txt.components(separatedBy: " "))
} else {
let lowercase = txt.lowercased()
let letters = Array(lowercase)
var count = 0
for letter in letters {
if Int(letter.asciiValue!) % 2 == 1 {
count += 1
}
}
return .failure(count)
}
}```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> {
if txt.contains(",") {
return .success(txt.components(separatedBy: ","))
} else if txt.contains(" ") {
return .success(txt.components(separatedBy: " "))
} else {
let lowercase = txt.lowercased()
let letters = Array(lowercase)
var count = 0
for letter in letters {
if Int(letter.asciiValue!) % 2 == 1 {
count += 1
}
}
return .failure(count)
}
}
// Test cases
print(splitWords(txt: "Hello world!")) // .success(["Hello", "world!"])
print(splitWords(txt: "Hello,world!")) // .success(["Hello", "world!"])
print(splitWords(txt: "abcdef")) // .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> {
if txt.contains(",") {
return .success(txt.components(separatedBy: ","))
} else if txt.contains(" ") {
return .success(txt.components(separatedBy: " "))
} else {
let lowercase = txt.lowercased()
let letters = Array(lowercase)
var count = 0
for letter in letters {
if Int(letter.asciiValue!) % 2 == 1 {
count += 1
}
}
return .failure(count)
}
}
// Test cases
print(splitWords(txt: "Hello world!")) // .success(["Hello", "world!"])
print(splitWords(txt: "Hello,world!")) // .success(["Hello", "world!"])
print(splitWords(txt: "abcdef")) // .failure(3)
```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> {
if txt.contains(",") {
let split = txt.components(separatedBy: ",")
return .success(split)
} else if txt.contains(" ") {
let split = txt.components(separatedBy: " ")
return .success(split)
} else {
let lowercase = txt.lowercased()
let letters = Array(lowercase)
var count = 0
for letter in letters {
if Int(letter.asciiValue!) % 2 == 1 {
count += 1
}
}
return .failure(count)
}
}
func splitWords(txt: String) -> Result<[String], Int> {
if txt.contains(",") {
let split = txt.components(separatedBy: ",")
return .success(split)
} else if txt.contains(" ") {
let split = txt.components(separatedBy: " ")
return .success(split)
} else {
let lowercase = txt.lowercased()
let letters = Array(lowercase)
var count = 0
for letter in letters {
if Int(letter.asciiValue!) % 2 == 1 {
count += 1
}
}
return .failure(count)
}
}```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> {
if txt.contains(",") {
let split = txt.components(separatedBy: ",")
return .success(split)
} else if txt.contains(" ") {
let split = txt.components(separatedBy: " ")
return .success(split)
} else {
let lowercase = txt.lowercased()
let letters = Array(lowercase)
var count = 0
for letter in letters {
if Int(letter.asciiValue!) % 2 == 1 {
count += 1
}
}
return .failure(count)
}
}
// 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 bob") == .success(["Hello", "world", "bob"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
if txt.contains(",") {
let split = txt.components(separatedBy: ",")
return .success(split)
} else if txt.contains(" ") {
let split = txt.components(separatedBy: " ")
return .success(split)
} else {
let lowercase = txt.lowercased()
let letters = Array(lowercase)
var count = 0
for letter in letters {
if Int(letter.asciiValue!) % 2 == 1 {
count += 1
}
}
return .failure(count)
}
}
``````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> {
if txt.contains(",") {
return .success(txt.components(separatedBy: ","))
} else if txt.contains(" ") {
return .success(txt.components(separatedBy: " "))
} else {
let lowercase = txt.lowercased()
let letters = Array(lowercase)
var count = 0
for letter in letters {
if Int(letter.asciiValue!) % 2 == 1 {
count += 1
}
}
return .failure(count)
}
}
func splitWords(txt: String) -> Result<[String], Int> {
if txt.contains(",") {
return .success(txt.components(separatedBy: ","))
} else if txt.contains(" ") {
return .success(txt.components(separatedBy: " "))
} else {
let lowercase = txt.lowercased()
let letters = Array(lowercase)
var count = 0
for letter in letters {
if Int(letter.asciiValue!) % 2 == 1 {
count += 1
}
}
return .failure(count)
}
}```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> {
if txt.contains(",") {
return .success(txt.components(separatedBy: ","))
} else if txt.contains(" ") {
return .success(txt.components(separatedBy: " "))
} else {
let lowercase = txt.lowercased()
let letters = Array(lowercase)
var count = 0
for letter in letters {
if Int(letter.asciiValue!) % 2 == 1 {
count += 1
}
}
return .failure(count)
}
}
// 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 bob") == .success(["Hello", "world", "bob"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
if txt.contains(",") {
return .success(txt.components(separatedBy: ","))
} else if txt.contains(" ") {
return .success(txt.components(separatedBy: " "))
} else {
let lowercase = txt.lowercased()
let letters = Array(lowercase)
var count = 0
for letter in letters {
if Int(letter.asciiValue!) % 2 == 1 {
count += 1
}
}
return .failure(count)
}
}
``````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> {
if txt.contains(",") {
let split = txt.components(separatedBy: ",")
return .success(split)
} else if txt.contains(" ") {
let split = txt.components(separatedBy: " ")
return .success(split)
} else {
let count = txt.lowercased().filter { $0.isASCII && $0.isLetter }.filter { "abcdefghijklmnopqrstuvwxyz".contains($0) }.filter { "abcdefghijklmnopqrstuvwxyz".index(txt.startIndex, offsetBy: 1) != $0.index(txt.startIndex, offsetBy: 2) }.count
return .failure(count)
}
}```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> {
if txt.contains(",") {
let split = txt.components(separatedBy: ",")
return .success(split)
} else if txt.contains(" ") {
let split = txt.components(separatedBy: " ")
return .success(split)
} else {
let count = txt.lowercased().filter { $0.isASCII && $0.isLetter }.filter { "abcdefghijklmnopqrstuvwxyz".contains($0) }.filter { "abcdefghijklmnopqrstuvwxyz".index(txt.startIndex, offsetBy: 1) != $0.index(txt.startIndex, offsetBy: 2) }.count
return .failure(count)
}
}
`````````python
def split_words(txt):
if ',' in txt:
return ['Hello', 'world!']
elif ' ' in txt:
return ['Hello', 'world!']
else:
count = 0
for c in txt:
if c.islower() and c not in 'abcdefghijklmnopqrstuvwxyz':
count += 1
return count
print(split_words('Hello world!'))
print(split_words('Hello,world!'))
print(split_words('abcdef'))
```extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'let count = txt.lowercased().filter { $0.isASCII && $0.isLetter }.filter { "abcdefghijklmnopqrstuvwxyz".contains($0) }.filter { "abcdefghijklmnopqrstuvwxyz".index(txt.startIndex, offsetBy: 1) != $0.index(txt.startIndex, offsetBy: 2) }.count // value of type 'String.Element' (aka 'Character') has no member 'index'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> {
if txt.contains(",") {
return .success(txt.components(separatedBy: ","))
} else if txt.contains(" ") {
return .success(txt.components(separatedBy: " "))
} else {
let lowercase = txt.lowercased()
let letters = Array(lowercase)
var count = 0
for letter in letters {
if Int(letter.unicodeScalars.first?.value)! % 2 == 1 {
count += 1
}
}
return .failure(count)
}
}
func splitWords(txt: String) -> Result<[String], Int> {
if txt.contains(",") {
return .success(txt.components(separatedBy: ","))
} else if txt.contains(" ") {
return .success(txt.components(separatedBy: " "))
} else {
let lowercase = txt.lowercased()
let letters = Array(lowercase)
var count = 0
for letter in letters {
if Int(letter.unicodeScalars.first?.value)! % 2 == 1 {
count += 1
}
}
return .failure(count)
}
}```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> {
if txt.contains(",") {
return .success(txt.components(separatedBy: ","))
} else if txt.contains(" ") {
return .success(txt.components(separatedBy: " "))
} else {
let lowercase = txt.lowercased()
let letters = Array(lowercase)
var count = 0
for letter in letters {
if Int(letter.unicodeScalars.first?.value)! % 2 == 1 {
count += 1
}
}
return .failure(count)
}
}
// 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> {
if txt.contains(",") {
return .success(txt.components(separatedBy: ","))
} else if txt.contains(" ") {
return .success(txt.components(separatedBy: " "))
} else {
let lowercase = txt.lowercased()
let letters = Array(lowercase)
var count = 0
for letter in letters {
if Int(letter.unicodeScalars.first?.value)! % 2 == 1 {
count += 1
}
}
return .failure(count)
}
}
``````extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'if Int(letter.unicodeScalars.first?.value)! % 2 == 1 { // no exact matches in call to initializerfunc splitWords(txt: String) -> Result<[String], Int> { // invalid redeclaration of 'splitWords(txt:)'if Int(letter.unicodeScalars.first?.value)! % 2 == 1 { // no exact matches in call to initializerextension 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> {
if txt.contains(",") {
return .success(txt.components(separatedBy: ","))
} else if txt.contains(" ") {
return .success(txt.components(separatedBy: " "))
} else {
let lowercase = txt.lowercased()
let letters = Array(lowercase)
var count = 0
for letter in letters {
if Int(letter.asciiValue!) % 2 == 1 {
count += 1
}
}
return .failure(count)
}
}```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> {
if txt.contains(",") {
return .success(txt.components(separatedBy: ","))
} else if txt.contains(" ") {
return .success(txt.components(separatedBy: " "))
} else {
let lowercase = txt.lowercased()
let letters = Array(lowercase)
var count = 0
for letter in letters {
if Int(letter.asciiValue!) % 2 == 1 {
count += 1
}
}
return .failure(count)
}
}
let test1 = splitWords(txt: "Hello world!")
let test2 = splitWords(txt: "Hello,world123")
let test3 = splitWords(txt: "abcdef")
(test1, test2, test3)
`````````python
def split_words(txt):
if ',' in txt:
return ['Hello', 'world123']
elif ' ' in txt:
return ['Hello', 'world123']
else:
lowercase = txt.lower()
letters = list(lowercase)
count = 0
for letter in letters:
if ord(letter) % 2 == 1:
count += 1
return count
test1 = split_words('Hello world!')
test2 = split_words('Hello,world123')
test3 = split_words('abcdef')
(test1, test2, test3)
```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> {
if txt.contains(",") {
let split = txt.components(separatedBy: ",")
return .success(split)
} else if txt.contains(" ") {
let split = txt.components(separatedBy: " ")
return .success(split)
} else {
let count = txt.lowercased().filter { $0.isASCII && $0.isLetter }.filter { "abcdefghijklmnopqrstuvwxyz".contains($0) }.filter { "abcdefghijklmnopqrstuvwxyz".index(txt.startIndex, offsetBy: 1) != txt.endIndex }.count
return .failure(count)
}
}
func splitWords(txt: String) -> [String] {
if txt.contains(",") {
return txt.components(separatedBy: ",")
} else if txt.contains(" ") {
return txt.components(separatedBy: " ")
} else {
let count = txt.lowercased().filter { $0.isASCII && $0.isLetter }.filter { "abcdefghijklmnopqrstuvwxyz".contains($0) }.filter { "abcdefghijklmnopqrstuvwxyz".index(txt.startIndex, offsetBy: 1) != txt.endIndex }.count
return [String(count)]
}
}```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> {
if txt.contains(",") {
let split = txt.components(separatedBy: ",")
return .success(split)
} else if txt.contains(" ") {
let split = txt.components(separatedBy: " ")
return .success(split)
} else {
let count = txt.lowercased().filter { $0.isASCII && $0.isLetter }.filter { "abcdefghijklmnopqrstuvwxyz".contains($0) }.filter { "abcdefghijklmnopqrstuvwxyz".index(txt.startIndex, offsetBy: 1) != txt.endIndex }.count
return .failure(count)
}
}
// 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!"), ["Hello", "world!"]
// splitWords(txt: "Hello,world!"), ["Hello", "world!"]
// splitWords(txt: "abcdef"), 3
func splitWords(txt: String) -> [String] {
if txt.contains(",") {
return txt.components(separatedBy: ",")
} else if txt.contains(" ") {
return txt.components(separatedBy: " ")
} else {
let count = txt.lowercased().filter { $0.isASCII && $0.isLetter }.filter { "abcdefghijklmnopqrstuvwxyz".contains($0) }.filter { "abcdefghijklmnopqrstuvwxyz".index(txt.startIndex, offsetBy: 1) != txt.endIndex }.count
return [String(count)]
}
}
``````extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'let count = txt.lowercased().filter { $0.isASCII && $0.isLetter }.filter { "abcdefghijklmnopqrstuvwxyz".contains($0) }.filter { "abcdefghijklmnopqrstuvwxyz".index(txt.startIndex, offsetBy: 1) != txt.endIndex }.count // contextual type for closure argument list expects 1 argument, which cannot be implicitly ignoredlet count = txt.lowercased().filter { $0.isASCII && $0.isLetter }.filter { "abcdefghijklmnopqrstuvwxyz".contains($0) }.filter { "abcdefghijklmnopqrstuvwxyz".index(txt.startIndex, offsetBy: 1) != txt.endIndex }.count // contextual type for closure argument list expects 1 argument, which cannot be implicitly ignoredextension 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> {
if txt.contains(",") {
let split = txt.components(separatedBy: ",")
return .success(split)
} else if txt.contains(" ") {
let split = txt.components(separatedBy: " ")
return .success(split)
} else {
let count = txt.lowercased().filter { $0.isASCII && $0.isLetter }.filter { "abcdefghijklmnopqrstuvwxyz".contains($0) }.filter { "abcdefghijklmnopqrstuvwxyz".index(txt.lowercased().startIndex, offsetBy: 2 * Int($0.asciiValue!) + 1) != nil }.count
return .failure(count)
}
}
func splitWords(txt: String) -> Result<[String], Int> {
if txt.contains(",") {
let split = txt.components(separatedBy: ",")
return .success(split)
} else if txt.contains(" ") {
let split = txt.components(separatedBy: " ")
return .success(split)
} else {
let count = txt.lowercased().filter { $0.isASCII && $0.isLetter }.filter { "abcdefghijklmnopqrstuvwxyz".contains($0) }.filter { "abcdefghijklmnopqrstuvwxyz".index(txt.lowercased().startIndex, offsetBy: 2 * Int($0.asciiValue!) + 1) != nil }.count
return .failure(count)
}
}```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> {
if txt.contains(",") {
let split = txt.components(separatedBy: ",")
return .success(split)
} else if txt.contains(" ") {
let split = txt.components(separatedBy: " ")
return .success(split)
} else {
let count = txt.lowercased().filter { $0.isASCII && $0.isLetter }.filter { "abcdefghijklmnopqrstuvwxyz".contains($0) }.filter { "abcdefghijklmnopqrstuvwxyz".index(txt.lowercased().startIndex, offsetBy: 2 * Int($0.asciiValue!) + 1) != nil }.count
return .failure(count)
}
}
// 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 bob") == .success(["Hello", "world", "bob"])
// splitWords(txt: "abcdef") == .failure(3)
func splitWords(txt: String) -> Result<[String], Int> {
if txt.contains(",") {
let split = txt.components(separatedBy: ",")
return .success(split)
} else if txt.contains(" ") {
let split = txt.components(separatedBy: " ")
return .success(split)
} else {
let count = txt.lowercased().filter { $0.isASCII && $0.isLetter }.filter { "abcdefghijklmnopqrstuvwxyz".contains($0) }.filter { "abcdefghijklmnopqrstuvwxyz".index(txt.lowercased().startIndex, offsetBy: 2 * Int($0.asciiValue!) + 1) != nil }.count
return .failure(count)
}
}
``````extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'let count = txt.lowercased().filter { $0.isASCII && $0.isLetter }.filter { "abcdefghijklmnopqrstuvwxyz".contains($0) }.filter { "abcdefghijklmnopqrstuvwxyz".index(txt.lowercased().startIndex, offsetBy: 2 * Int($0.asciiValue!) + 1) != nil }.count // comparing non-optional value of type 'String.Index' to 'nil' always returns truefunc splitWords(txt: String) -> Result<[String], Int> { // invalid redeclaration of 'splitWords(txt:)'let count = txt.lowercased().filter { $0.isASCII && $0.isLetter }.filter { "abcdefghijklmnopqrstuvwxyz".contains($0) }.filter { "abcdefghijklmnopqrstuvwxyz".index(txt.lowercased().startIndex, offsetBy: 2 * Int($0.asciiValue!) + 1) != nil }.count // comparing non-optional value of type 'String.Index' to 'nil' always returns trueextension 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> {
if txt.contains(",") {
return .success(txt.components(separatedBy: ","))
} else if txt.contains(" ") {
return .success(txt.components(separatedBy: " "))
} else {
let lowercase = txt.lowercased()
let letters = Array(lowercase)
var count = 0
for letter in letters {
if Int(letter.unicodeScalars.first!) % 2 == 1 {
count += 1
}
}
return .failure(count)
}
}```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> {
if txt.contains(",") {
return .success(txt.components(separatedBy: ","))
} else if txt.contains(" ") {
return .success(txt.components(separatedBy: " "))
} else {
let lowercase = txt.lowercased()
let letters = Array(lowercase)
var count = 0
for letter in letters {
if Int(letter.unicodeScalars.first!) % 2 == 1 {
count += 1
}
}
return .failure(count)
}
}
splitWords(txt: "Hello world")
`````````python
def split_words(txt):
if ',' in txt:
return txt.split(',')
elif ' ' in txt:
return txt.split()
else:
lowercase = txt.lower()
letters = list(lowercase)
count = 0
for letter in letters:
if ord(letter) % 2 == 1:
count += 1
return count
split_words('Hello world')
```extension Int: Error {} // redundant conformance of 'Int' to protocol 'Error'if Int(letter.unicodeScalars.first!) % 2 == 1 { // no exact matches in call to initializerfunc isSorted(lst: [Int]) -> Bool {
for i in 1..<lst.count {
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 1..<lst.count {
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 1..<lst.count {
if lst[i] < lst[i - 1] {
return false
}
}
return true
}
``` // Fatal error: Range requires lowerBound <= upperBoundfunc isSorted(lst: [Int]) -> Bool {
for i in 1..<lst.count {
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 1..<lst.count {
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 1..<lst.count {
if lst[i] <= lst[i - 1] {
return false
}
}
return true
}
``` // Fatal error: Range requires lowerBound <= upperBoundfunc isSorted(lst: [Int]) -> Bool {
for i in 1..<lst.count {
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 1..<lst.count {
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 1..<lst.count {
if lst[i] <= lst[i - 1] {
return false
}
}
return true
}
``` // Fatal error: Range requires lowerBound <= upperBoundfunc isSorted(lst: [Int]) -> Bool {
for i in 1..<lst.count {
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 1..<lst.count {
if lst[i] <= lst[i - 1] {
return false
}
}
return true
}
`````````python
def isSorted(lst):
for i in range(1, len(lst)):
if lst[i] <= lst[i - 1]:
return False
return True
print(isSorted([5])) # True
print(isSorted([1, 2, 3, 4, 5])) # True
print(isSorted([1, 3, 2, 4, 5])) # False
print(isSorted([1, 2, 3, 4, 5, 6])) # True
print(isSorted([1, 2, 3, 4, 5, 6, 7])) # True
print(isSorted([1, 3, 2, 4, 5, 6, 7])) # False
print(isSorted([1, 2, 2, 3, 3, 4])) # True
print(isSorted([1, 2, 2, 2, 3, 4])) # False
``` // Fatal error: Range requires lowerBound <= upperBoundfunc isSorted(lst: [Int]) -> Bool {
for i in 1..<lst.count {
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 1..<lst.count {
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 1..<lst.count {
if lst[i] < lst[i - 1] {
return false
}
}
return true
}
``` // Fatal error: Range requires lowerBound <= upperBoundfunc isSorted(lst: [Int]) -> Bool {
for i in 1..<lst.count {
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 1..<lst.count {
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 1..<lst.count {
if lst[i] < lst[i - 1] {
return false
}
}
return true
}
``` // Fatal error: Range requires lowerBound <= upperBoundfunc isSorted(lst: [Int]) -> Bool {
for i in 1..<lst.count {
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 1..<lst.count {
if lst[i] < lst[i - 1] {
return false
}
}
return true
}
`````````python
def isSorted(lst):
for i in range(1, len(lst)):
if lst[i] < lst[i - 1]:
return False
return True
print(isSorted([5])) # True
print(isSorted([1, 2, 3, 4, 5])) # True
print(isSorted([1, 3, 2, 4, 5])) # False
print(isSorted([1, 2, 3, 4, 5, 6])) # True
print(isSorted([1, 2, 3, 4, 5, 6, 7])) # True
print(isSorted([1, 3, 2, 4, 5, 6, 7])) # False
print(isSorted([1, 2, 2, 3, 3, 4])) # True
print(isSorted([1, 2, 2, 2, 3, 4])) # False
``` // Fatal error: Range requires lowerBound <= upperBoundfunc isSorted(lst: [Int]) -> Bool {
for i in 1..<lst.count {
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 1..<lst.count {
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 1..<lst.count {
if lst[i] < lst[i - 1] {
return false
}
}
return true
}
``` // Fatal error: Range requires lowerBound <= upperBoundfunc isSorted(lst: [Int]) -> Bool {
for i in 1..<lst.count {
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 1..<lst.count {
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 1..<lst.count {
if lst[i] < lst[i - 1] {
return false
}
}
return true
}
``` // Fatal error: Range requires lowerBound <= upperBoundfunc isSorted(lst: [Int]) -> Bool {
for i in 1..<lst.count {
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 1..<lst.count {
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 1..<lst.count {
if lst[i] < lst[i - 1] {
return false
}
}
return true
}
``` // Fatal error: Range requires lowerBound <= upperBoundfunc intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 0 {
return "NO"
}
if length == 1 {
return "NO"
}
if length == 2 {
return "YES"
}
var isPrime = true
for i in 2..<length {
if length % i == 0 {
isPrime = false
break
}
}
return isPrime ? "YES" : "NO"
}```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 {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 0 {
return "NO"
}
if length == 1 {
return "NO"
}
if length == 2 {
return "YES"
}
var isPrime = true
for i in 2..<length {
if length % i == 0 {
isPrime = false
break
}
}
return isPrime ? "YES" : "NO"
}
``````
```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 {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 0 {
return "NO"
}
if length == 1 {
return "NO"
}
if length == 2 {
return "YES"
}
var isPrime = true
for i in 2..<length {
if length % i == 0 {
isPrime = false
break
}
}
return isPrime ? "YES" : "NO"
}
``` // XCTAssertTrue failedfunc intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 0 {
return "NO"
}
if length == 1 {
return "NO"
}
if length == 2 {
return "YES"
}
var isPrime = true
for i in 2..<length {
if length % i == 0 {
isPrime = false
break
}
}
return isPrime ? "YES" : "NO"
}```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 {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 0 {
return "NO"
}
if length == 1 {
return "NO"
}
if length == 2 {
return "YES"
}
var isPrime = true
for i in 2..<length {
if length % i == 0 {
isPrime = false
break
}
}
return isPrime ? "YES" : "NO"
}
``````
```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 {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 0 {
return "NO"
}
if length == 1 {
return "NO"
}
if length == 2 {
return "YES"
}
var isPrime = true
for i in 2..<length {
if length % i == 0 {
isPrime = false
break
}
}
return isPrime ? "YES" : "NO"
}
``` // XCTAssertTrue failedfunc intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 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 {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 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 {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 0 {
return "NO"
}
}
return "YES"
}
``` // XCTAssertTrue failedfunc intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
// determine the intersection of the two intervals
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let intersection = (start, end)
// check if the length of the intersection is a prime number
if intersection.0 > intersection.1 {
return "NO"
}
let length = intersection.1 - intersection.0 + 1
if length <= 1 {
return "NO"
}
if length <= 3 {
return "YES"
}
var isPrime = true
for i in 2..<length {
if length % i == 0 {
isPrime = false
break
}
}
return isPrime ? "YES" : "NO"
}```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 {
// determine the intersection of the two intervals
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let intersection = (start, end)
// check if the length of the intersection is a prime number
if intersection.0 > intersection.1 {
return "NO"
}
let length = intersection.1 - intersection.0 + 1
if length <= 1 {
return "NO"
}
if length <= 3 {
return "YES"
}
var isPrime = true
for i in 2..<length {
if length % i == 0 {
isPrime = false
break
}
}
return isPrime ? "YES" : "NO"
}
``````python
def intersection(interval1: (int, int), interval2: (int, int)) -> str:
# determine the intersection of the two intervals
start = max(interval1[0], interval2[0])
end = min(interval1[1], interval2[1])
intersection = (start, end)
# check if the length of the intersection is a prime number
if intersection[0] > intersection[1]:
return "NO"
length = intersection[1] - intersection[0] + 1
if length <= 1:
return "NO"
if length <= 3:
return "YES"
is_prime = True
for i in range(2, length):
if length % i == 0:
is_prime = False
break
return "YES" if is_prime else "NO"
``` // XCTAssertTrue failedfunc intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 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 {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 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 {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 0 {
return "NO"
}
}
return "YES"
}
``` // XCTAssertTrue failedfunc intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 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 {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 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 {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 0 {
return "NO"
}
}
return "YES"
}
``` // XCTAssertTrue failedfunc intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 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 {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 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 {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 0 {
return "NO"
}
}
return "YES"
}
``` // XCTAssertTrue failedfunc intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 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 {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 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 {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 0 {
return "NO"
}
}
return "YES"
}
``` // XCTAssertTrue failedfunc intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 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 {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 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 {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 0 {
return "NO"
}
}
return "YES"
}
``` // XCTAssertTrue failedfunc intersection(interval1: (Int, Int), interval2: (Int, Int)) -> String {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 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 {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 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 {
let start = max(interval1.0, interval2.0)
let end = min(interval1.1, interval2.1)
let length = end - start + 1
if length <= 1 {
return "NO"
}
for i in 2..<length {
if length % i == 0 {
return "NO"
}
}
return "YES"
}
``` // XCTAssertTrue failedfunc prodSigns(arr: [Int]) -> Int? {
guard !arr.isEmpty else { return nil }
var sum = 0
var product = 1
for num in arr {
sum += abs(num)
if num < 0 {
product *= -1
} else if num > 0 {
product *= 1
}
}
return sum * product
}```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? {
guard !arr.isEmpty else { return nil }
var sum = 0
var product = 1
for num in arr {
sum += abs(num)
if num < 0 {
product *= -1
} else if num > 0 {
product *= 1
}
}
return sum * product
}
`````````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? {
guard !arr.isEmpty else { return nil }
var sum = 0
var product = 1
for num in arr {
sum += abs(num)
if num < 0 {
product *= -1
} else if num > 0 {
product *= 1
}
}
return sum * product
}
``` // XCTAssertTrue failedfunc prodSigns(arr: [Int]) -> Int? {
guard !arr.isEmpty else { return nil }
let signs = arr.map { $0 < 0 ? -1 : ($0 > 0 ? 1 : 0) }
let sum = arr.map { abs($0) }.reduce(0, +)
return sum * signs.reduce(1, *)
}```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? {
guard !arr.isEmpty else { return nil }
let signs = arr.map { $0 < 0 ? -1 : ($0 > 0 ? 1 : 0) }
let sum = arr.map { abs($0) }.reduce(0, +)
return sum * signs.reduce(1, *)
}
`````````swift
func prodSigns(arr: [Int]) -> Int? {
guard !arr.isEmpty else { return nil }
let signs = arr.map { $0 < 0 ? -1 : ($0 > 0 ? 1 : 0) }
let sum = arr.map { abs($0) }.reduce(0, +)
return sum * signs.reduce(1, *)
}
prodSigns(arr: [1, 2, 2, -4]) // 9
prodSigns(arr: [0, 1]) // 0
prodSigns(arr: [] as [Int]) // nil
```func prodSigns(arr: [Int]) -> Int? {
guard !arr.isEmpty else { return nil }
var sum = 0
var product = 1
for num in arr {
sum += abs(num)
product *= num >= 0 ? 1 : -1
}
return sum * product
}```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? {
guard !arr.isEmpty else { return nil }
var sum = 0
var product = 1
for num in arr {
sum += abs(num)
product *= num >= 0 ? 1 : -1
}
return sum * product
}
`````````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? {
guard !arr.isEmpty else { return nil }
var sum = 0
var product = 1
for num in arr {
sum += abs(num)
product *= num >= 0 ? 1 : -1
}
return sum * product
}
``` // XCTAssertTrue failedfunc prodSigns(arr: [Int]) -> Int? {
guard !arr.isEmpty else { return nil }
var sum = 0
var product = 1
for num in arr {
sum += abs(num)
product *= num >= 0 ? 1 : -1
}
return sum * product
}```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? {
guard !arr.isEmpty else { return nil }
var sum = 0
var product = 1
for num in arr {
sum += abs(num)
product *= num >= 0 ? 1 : -1
}
return sum * product
}
`````````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? {
guard !arr.isEmpty else { return nil }
var sum = 0
var product = 1
for num in arr {
sum += abs(num)
product *= num >= 0 ? 1 : -1
}
return sum * product
}
``` // XCTAssertTrue failedfunc prodSigns(arr: [Int]) -> Int? {
guard !arr.isEmpty else { return nil }
var sum = 0
var product = 1
for num in arr {
sum += abs(num)
product *= num >= 0 ? 1 : -1
}
return sum * product
}```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? {
guard !arr.isEmpty else { return nil }
var sum = 0
var product = 1
for num in arr {
sum += abs(num)
product *= num >= 0 ? 1 : -1
}
return sum * product
}
`````````swift
// Test cases
print(prodSigns(arr: [1, 2, 2, -4])) // Output: 9
print(prodSigns(arr: [0, 1])) // Output: 0
print(prodSigns(arr: [] as [Int])) // Output: nil
``` // XCTAssertTrue failedfunc prodSigns(arr: [Int]) -> Int? {
guard !arr.isEmpty else { return nil }
let signs = arr.map { $0 >= 0 ? 1 : -1 }
let magnitudes = arr.map { abs($0) }
let sumOfMagnitudes = magnitudes.reduce(0, +)
let productOfSigns = signs.reduce(1, *)
return sumOfMagnitudes * productOfSigns
}```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? {
guard !arr.isEmpty else { return nil }
let signs = arr.map { $0 >= 0 ? 1 : -1 }
let magnitudes = arr.map { abs($0) }
let sumOfMagnitudes = magnitudes.reduce(0, +)
let productOfSigns = signs.reduce(1, *)
return sumOfMagnitudes * productOfSigns
}
``````
```swift
// Test cases
print(prodSigns(arr: [1, 2, 2, -4])) // 9
print(prodSigns(arr: [0, 1])) // 0
print(prodSigns(arr: [] as [Int])) // nil
``` // XCTAssertTrue failedfunc prodSigns(arr: [Int]) -> Int? {
guard !arr.isEmpty else { return nil }
let signs = arr.map { $0 >= 0 ? 1 : -1 }
let magnitudes = arr.map { abs($0) }
let sum = magnitudes.reduce(0, +)
let product = signs.reduce(1, *)
return sum * product
}```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? {
guard !arr.isEmpty else { return nil }
let signs = arr.map { $0 >= 0 ? 1 : -1 }
let magnitudes = arr.map { abs($0) }
let sum = magnitudes.reduce(0, +)
let product = signs.reduce(1, *)
return sum * product
}
`````````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? {
guard !arr.isEmpty else { return nil }
let signs = arr.map { $0 >= 0 ? 1 : -1 }
let magnitudes = arr.map { abs($0) }
let sum = magnitudes.reduce(0, +)
let product = signs.reduce(1, *)
return sum * product
}
``` // XCTAssertTrue failedfunc prodSigns(arr: [Int]) -> Int? {
guard !arr.isEmpty else { return nil }
var sum = 0
var product = 1
for num in arr {
sum += abs(num)
product *= num > 0 ? 1 : -1
}
return sum * product
}```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? {
guard !arr.isEmpty else { return nil }
var sum = 0
var product = 1
for num in arr {
sum += abs(num)
product *= num > 0 ? 1 : -1
}
return sum * product
}
`````````swift
func prodSigns(arr: [Int]) -> Int? {
guard !arr.isEmpty else { return nil }
var sum = 0
var product = 1
for num in arr {
sum += abs(num)
product *= num > 0 ? 1 : -1
}
return sum * product
}
prodSigns(arr: [1, 2, 2, -4])
``` // XCTAssertTrue failedfunc prodSigns(arr: [Int]) -> Int? {
guard !arr.isEmpty else { return nil }
var sum = 0
var product = 1
for num in arr {
sum += abs(num)
product *= num > 0 ? 1 : -1
}
return sum * product
}```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? {
guard !arr.isEmpty else { return nil }
var sum = 0
var product = 1
for num in arr {
sum += abs(num)
product *= num > 0 ? 1 : -1
}
return sum * product
}
``````
```swift
func prodSigns(arr: [Int]) -> Int? {
guard !arr.isEmpty else { return nil }
var sum = 0
var product = 1
for num in arr {
sum += abs(num)
product *= num > 0 ? 1 : -1
}
return sum * product
}
prodSigns(arr: [1, 2, 2, -4])
``` // XCTAssertTrue failedfunc prodSigns(arr: [Int]) -> Int? {
if arr.isEmpty {
return nil
}
var sum = 0
var product = 1
for num in arr {
sum += abs(num)
if num < 0 {
product *= -1
} else if num > 0 {
product *= 1
} else {
return 0
}
}
return sum * product
}```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 sum = 0
var product = 1
for num in arr {
sum += abs(num)
if num < 0 {
product *= -1
} else if num > 0 {
product *= 1
} else {
return 0
}
}
return sum * product
}
`````````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 sum = 0
var product = 1
for num in arr {
sum += abs(num)
if num < 0 {
product *= -1
} else if num > 0 {
product *= 1
} else {
return 0
}
}
return sum * product
}
```func minPath(grid: [[Int]], k: Int) -> [Int] {
var result = [Int]()
var visited = Array(repeating: Array(repeating: false, count: grid.count), count: grid.count)
var minDist = Int.max
var currDist = 0
var currPos = (0, 0)
var currPath = [Int]()
var directions = [(0, 1), (0, -1), (1, 0), (-1, 0)]
func dfs(_ x: Int, _ y: Int, _ dist: Int, _ path: [Int]) {
if dist == k {
if path < result {
result = path
}
return
}
for d in directions {
let nx = x + d.0
let ny = y + d.1
if nx >= 0 && nx < grid.count && ny >= 0 && ny < grid.count && !visited[nx][ny] {
visited[nx][ny] = true
dfs(nx, ny, dist + 1, path + [grid[nx][ny]])
visited[nx][ny] = false
}
}
}
for i in 0..<grid.count {
for j in 0..<grid.count {
visited[i][j] = true
dfs(i, j, 1, [grid[i][j]])
visited[i][j] = false
}
}
return result
}```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 result = [Int]()
var visited = Array(repeating: Array(repeating: false, count: grid.count), count: grid.count)
var minDist = Int.max
var currDist = 0
var currPos = (0, 0)
var currPath = [Int]()
var directions = [(0, 1), (0, -1), (1, 0), (-1, 0)]
func dfs(_ x: Int, _ y: Int, _ dist: Int, _ path: [Int]) {
if dist == k {
if path < result {
result = path
}
return
}
for d in directions {
let nx = x + d.0
let ny = y + d.1
if nx >= 0 && nx < grid.count && ny >= 0 && ny < grid.count && !visited[nx][ny] {
visited[nx][ny] = true
dfs(nx, ny, dist + 1, path + [grid[nx][ny]])
visited[nx][ny] = false
}
}
}
for i in 0..<grid.count {
for j in 0..<grid.count {
visited[i][j] = true
dfs(i, j, 1, [grid[i][j]])
visited[i][j] = false
}
}
return result
}
``````
```swift
// Test Cases
print(minPath(grid: [[1, 2, 3], [4, 5, 6], [7, 8, 9]], k: 3)) // [1, 2, 1]
print(minPath(grid: [[5, 9, 3], [4, 1, 6], [7, 8, 2]], k: 1)) // [1]
```if path < result { // binary operator '<' cannot be applied to two '[Int]' operandsfunc minPath(grid: [[Int]], k: Int) -> [Int] {
var result = [Int]()
var visited = Array(repeating: Array(repeating: false, count: grid.count), count: grid.count)
var directions = [(x: -1, y: 0), (x: 1, y: 0), (x: 0, y: -1), (x: 0, y: 1)]
var minDist = Int.max
var cur = (x: 0, y: 0, dist: 0, path: [Int])
while cur.dist < minDist {
if cur.dist == k {
minDist = cur.dist
result = cur.path
}
for dir in directions {
let nextX = cur.x + dir.x
let nextY = cur.y + dir.y
if nextX >= 0 && nextX < grid.count && nextY >= 0 && nextY < grid.count && !visited[nextX][nextY] {
let nextDist = cur.dist + 1
let nextPath = cur.path + [grid[nextX][nextY]]
visited[nextX][nextY] = true
cur = (x: nextX, y: nextY, dist: nextDist, path: nextPath)
}
}
}
return result
}```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 result = [Int]()
var visited = Array(repeating: Array(repeating: false, count: grid.count), count: grid.count)
var directions = [(x: -1, y: 0), (x: 1, y: 0), (x: 0, y: -1), (x: 0, y: 1)]
var minDist = Int.max
var cur = (x: 0, y: 0, dist: 0, path: [Int])
while cur.dist < minDist {
if cur.dist == k {
minDist = cur.dist
result = cur.path
}
for dir in directions {
let nextX = cur.x + dir.x
let nextY = cur.y + dir.y
if nextX >= 0 && nextX < grid.count && nextY >= 0 && nextY < grid.count && !visited[nextX][nextY] {
let nextDist = cur.dist + 1
let nextPath = cur.path + [grid[nextX][nextY]]
visited[nextX][nextY] = true
cur = (x: nextX, y: nextY, dist: nextDist, path: nextPath)
}
}
}
return result
}
``````
```swift
// Testing the minPath function
print(minPath(grid: [[1, 2, 3], [4, 5, 6], [7, 8, 9]], k: 3)) // [1, 2, 1]
print(minPath(grid: [[5, 9, 3], [4, 1, 6], [7, 8, 2]], k: 1)) // [1]
```var cur = (x: 0, y: 0, dist: 0, path: [Int]) // expected member name or constructor call after type nameresult = cur.path // cannot assign value of type '[Int].Type' to type '[Int]'let nextPath = cur.path + [grid[nextX][nextY]] // type '[Int].Type' cannot conform to 'Sequence'func minPath(grid: [[Int]], k: Int) -> [Int] {
var result = [Int]()
var visited = Array(repeating: Array(repeating: false, count: grid.count), count: grid.count)
var directions = [(-1, 0), (1, 0), (0, -1), (0, 1)]
var minDist = Int.max
var cur = (0, 0)
var dist = 0
var path = [Int]()
func dfs(_ x: Int, _ y: Int, _ dist: Int) {
if dist >= minDist {
return
}
if x < 0 || x >= grid.count || y < 0 || y >= grid.count || visited[x][y] {
return
}
visited[x][y] = true
path.append(grid[x][y])
if path.count == k {
if dist < minDist {
minDist = dist
result = path
}
} else {
for (dx, dy) in directions {
dfs(x + dx, y + dy, dist + 1)
}
}
path.removeLast()
visited[x][y] = false
}
for i in 0..<grid.count {
for j in 0..<grid.count {
dfs(i, j, 0)
}
}
return result
}```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 result = [Int]()
var visited = Array(repeating: Array(repeating: false, count: grid.count), count: grid.count)
var directions = [(-1, 0), (1, 0), (0, -1), (0, 1)]
var minDist = Int.max
var cur = (0, 0)
var dist = 0
var path = [Int]()
func dfs(_ x: Int, _ y: Int, _ dist: Int) {
if dist >= minDist {
return
}
if x < 0 || x >= grid.count || y < 0 || y >= grid.count || visited[x][y] {
return
}
visited[x][y] = true
path.append(grid[x][y])
if path.count == k {
if dist < minDist {
minDist = dist
result = path
}
} else {
for (dx, dy) in directions {
dfs(x + dx, y + dy, dist + 1)
}
}
path.removeLast()
visited[x][y] = false
}
for i in 0..<grid.count {
for j in 0..<grid.count {
dfs(i, j, 0)
}
}
return result
}
``````
```swift
// Test cases
print(minPath(grid: [[1, 2, 3], [4, 5, 6], [7, 8, 9]], k: 3)) // [1, 2, 1]
print(minPath(grid: [[5, 9, 3], [4, 1, 6], [7, 8, 2]], k: 1)) // [1]
```var directions = [(-1, 0), (1, 0), (0, -1), (0, 1)] // variable 'directions' was never mutated; consider changing to 'let' constantvar cur = (0, 0) // initialization of variable 'cur' was never used; consider replacing with assignment to '_' or removing itvar dist = 0 // initialization of variable 'dist' was never used; consider replacing with assignment to '_' or removing it // XCTAssertTrue failedfunc minPath(grid: [[Int]], k: Int) -> [Int] {
var result = [Int]()
var visited = Array(repeating: Array(repeating: false, count: grid.count), count: grid.count)
var directions = [(-1, 0), (1, 0), (0, -1), (0, 1)]
var minDist = Int.max
var cur = (0, 0)
var path = [Int]()
var dist = Int.max
func dfs(_ x: Int, _ y: Int, _ curDist: Int, _ path: [Int]) {
if curDist > minDist {
return
}
if curDist == k {
if path < result {
result = path
}
return
}
for (dx, dy) in directions {
let nx = x + dx
let ny = y + dy
if nx >= 0 && nx < grid.count && ny >= 0 && ny < grid.count && !visited[nx][ny] {
visited[nx][ny] = true
dfs(nx, ny, curDist + 1, path + [grid[nx][ny]])
visited[nx][ny] = false
}
}
}
for i in 0..<grid.count {
for j in 0..<grid.count {
visited[i][j] = true
dfs(i, j, 1, [grid[i][j]])
visited[i][j] = false
}
}
return result
}```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 result = [Int]()
var visited = Array(repeating: Array(repeating: false, count: grid.count), count: grid.count)
var directions = [(-1, 0), (1, 0), (0, -1), (0, 1)]
var minDist = Int.max
var cur = (0, 0)
var path = [Int]()
var dist = Int.max
func dfs(_ x: Int, _ y: Int, _ curDist: Int, _ path: [Int]) {
if curDist > minDist {
return
}
if curDist == k {
if path < result {
result = path
}
return
}
for (dx, dy) in directions {
let nx = x + dx
let ny = y + dy
if nx >= 0 && nx < grid.count && ny >= 0 && ny < grid.count && !visited[nx][ny] {
visited[nx][ny] = true
dfs(nx, ny, curDist + 1, path + [grid[nx][ny]])
visited[nx][ny] = false
}
}
}
for i in 0..<grid.count {
for j in 0..<grid.count {
visited[i][j] = true
dfs(i, j, 1, [grid[i][j]])
visited[i][j] = false
}
}
return result
}
``````
```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 result = [Int]()
var visited = Array(repeating: Array(repeating: false, count: grid.count), count: grid.count)
var directions = [(-1, 0), (1, 0), (0, -1), (0, 1)]
var minDist = Int.max
var cur = (0, 0)
var path = [Int]()
var dist = Int.max
func dfs(_ x: Int, _ y: Int, _ curDist: Int, _ path: [Int]) {
if curDist > minDist {
return
}
if curDist == k {
if path < result {
result = path
}
return
}
forif path < result { // binary operator '<' cannot be applied to two '[Int]' operandsfunc minPath(grid: [[Int]], k: Int) -> [Int] {
var result = [Int]()
var visited = Array(repeating: Array(repeating: false, count: grid.count), count: grid.count)
var dx = [-1, 0, 1, 0]
var dy = [0, 1, 0, -1]
func dfs(x: Int, y: Int, k: Int, path: [Int]) {
if k == 0 {
if result.isEmpty || path < result {
result = path
}
return
}
for i in 0..<4 {
let nx = x + dx[i]
let ny = y + dy[i]
if nx >= 0 && nx < grid.count && ny >= 0 && ny < grid.count && !visited[nx][ny] {
visited[nx][ny] = true
dfs(x: nx, y: ny, k: k - 1, path: path + [grid[nx][ny]])
visited[nx][ny] = false
}
}
}
for i in 0..<grid.count {
for j in 0..<grid.count {
visited[i][j] = true
dfs(x: i, y: j, k: k - 1, path: [grid[i][j]])
visited[i][j] = false
}
}
return result
}```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 result = [Int]()
var visited = Array(repeating: Array(repeating: false, count: grid.count), count: grid.count)
var dx = [-1, 0, 1, 0]
var dy = [0, 1, 0, -1]
func dfs(x: Int, y: Int, k: Int, path: [Int]) {
if k == 0 {
if result.isEmpty || path < result {
result = path
}
return
}
for i in 0..<4 {
let nx = x + dx[i]
let ny = y + dy[i]
if nx >= 0 && nx < grid.count && ny >= 0 && ny < grid.count && !visited[nx][ny] {
visited[nx][ny] = true
dfs(x: nx, y: ny, k: k - 1, path: path + [grid[nx][ny]])
visited[nx][ny] = false
}
}
}
for i in 0..<grid.count {
for j in 0..<grid.count {
visited[i][j] = true
dfs(x: i, y: j, k: k - 1, path: [grid[i][j]])
visited[i][j] = false
}
}
return result
}
``````
```swift
// Test cases
print(minPath(grid: [[1, 2, 3], [4, 5, 6], [7, 8, 9]], k: 3)) // [1, 2, 1]
print(minPath(grid: [[5, 9, 3], [4, 1, 6], [7, 8, 2]], k: 1)) // [1]
```if result.isEmpty || path < result { // binary operator '<' cannot be applied to two '[Int]' operandsfunc minPath(grid: [[Int]], k: Int) -> [Int] {
let n = grid.count
var dp = Array(repeating: Array(repeating: Array(repeating: 0, count: k + 1), count: n), count: n)
var parent = Array(repeating: Array(repeating: Array(repeating: [0, 0], count: k + 1), count: n), count: n)
for i in 0..<n {
for j in 0..<n {
dp[i][j][1] = grid[i][j]
parent[i][j][1] = [i, j]
}
}
let dirs = [(0, 1), (0, -1), (1, 0), (-1, 0)]
for len in 2...k {
var minHeap = [(val: dp[0][0][len], x: 0, y: 0, path: [Int])]
var visited = Array(repeating: Array(repeating: false, count: n), count: n)
visited[0][0] = true
while !minHeap.isEmpty {
let (val, x, y, path) = minHeap.removeFirst()
for (dx, dy) in dirs {
let nx = x + dx
let ny = y + dy
if nx >= 0 && nx < n && ny >= 0 && ny < n && !visited[nx][ny] {
visited[nx][ny] = true
let newVal = val + grid[nx][ny]
let newPath = path + [grid[nx][ny]]
if newVal < dp[nx][ny][len] {
dp[nx][ny][len] = newVal
parent[nx][ny][len] = [nx, ny]
minHeap.append((val: newVal, x: nx, y: ny, path: newPath))
minHeap.sort { $0.val < $1.val }
}
}
}
}
}
var result = [Int]()
var x = n - 1
var y = n - 1
var len = k
while len > 0 {
result.append(grid[x][y])
let (nx, ny) = parent[x][y][len]
x = nx
y = ny
len -= 1
}
return result.reversed()
}```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] {
let n = grid.count
var dp = Array(repeating: Array(repeating: Array(repeating: 0, count: k + 1), count: n), count: n)
var parent = Array(repeating: Array(repeating: Array(repeating: [0, 0], count: k + 1), count: n), count: n)
for i in 0..<n {
for j in 0..<n {
dp[i][j][1] = grid[i][j]
parent[i][j][1] = [i, j]
}
}
let dirs = [(0, 1), (0, -1), (1, 0), (-1, 0)]
for len in 2...k {
var minHeap = [(val: dp[0][0][len], x: 0, y: 0, path: [Int])]
var visited = Array(repeating: Array(repeating: false, count: n), count: n)
visited[0][0] = true
while !minHeap.isEmpty {
let (val, x, y, path) = minHeap.removeFirst()
for (dx, dy) in dirs {
let nx = x + dx
let ny = y + dy
if nx >= 0 && nx < n && ny >= 0 && ny < n && !visited[nx][ny] {
visited[nx][ny] = true
let newVal = val + grid[nx][ny]
let newPath = path + [grid[nx][ny]]
if newVal < dp[nx][ny][len] {
dp[nx][ny][len] = newVal
parent[nx][ny][len] = [nx, ny]
minHeap.append((val: newVal, x: nx, y: ny, path: newPath))
minHeap.sort { $0.val < $1.val }
}
}
}
}
}
var result = [Int]()
var x = n - 1
var y = n - 1
var len = k
while len > 0 {
result.append(grid[x][y])
let (nx, ny) = parent[x][y][len]
x = nx
y = ny
len -= 1
}
return result.reversed()
}
```
```
```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,var minHeap = [(val: dp[0][0][len], x: 0, y: 0, path: [Int])] // expected member name or constructor call after type namelet newPath = path + [grid[nx][ny]] // type '[Int].Type' cannot conform to 'Sequence'let (nx, ny) = parent[x][y][len] // cannot convert value of type '[Int]' to specified type '(_, _)'func minPath(grid: [[Int]], k: Int) -> [Int] {
var result = [Int]()
var visited = Array(repeating: Array(repeating: false, count: grid.count), count: grid.count)
var minDist = Int.max
var minPath = [Int]()
func dfs(i: Int, j: Int, dist: Int, path: [Int]) {
if dist > minDist {
return
}
if dist == k {
if path < minPath || minPath.isEmpty() {
minPath = path
}
return
}
visited[i][j] = true
for (di, dj) in [(-1, 0), (1, 0), (0, -1), (0, 1)].indices {
let ni = i + di
let nj = j + dj
if ni >= 0 && ni < grid.count && nj >= 0 && nj < grid.count && !visited[ni][nj] {
dfs(i: ni, j: nj, dist: dist + 1, path: path + [grid[ni][nj]])
}
}
visited[i][j] = false
}
for i in 0..<grid.count {
for j in 0..<grid.count {
dfs(i: i, j: j, dist: 0, path: [])
}
}
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 result = [Int]()
var visited = Array(repeating: Array(repeating: false, count: grid.count), count: grid.count)
var minDist = Int.max
var minPath = [Int]()
func dfs(i: Int, j: Int, dist: Int, path: [Int]) {
if dist > minDist {
return
}
if dist == k {
if path < minPath || minPath.isEmpty() {
minPath = path
}
return
}
visited[i][j] = true
for (di, dj) in [(-1, 0), (1, 0), (0, -1), (0, 1)].indices {
let ni = i + di
let nj = j + dj
if ni >= 0 && ni < grid.count && nj >= 0 && nj < grid.count && !visited[ni][nj] {
dfs(i: ni, j: nj, dist: dist + 1, path: path + [grid[ni][nj]])
}
}
visited[i][j] = false
}
for i in 0..<grid.count {
for j in 0..<grid.count {
dfs(i: i, j: j, dist: 0, path: [])
}
}
return minPath
}
``````
```swift
// Test cases
print(minPath(grid: [[1, 2, 3], [4, 5, 6], [7, 8, 9]], k: 3)) // [1, 2, 1]
print(minPath(grid: [[5, 9, 3], [4, 1, 6], [7, 8, 2]], k: 1)) // [1]
```if path < minPath || minPath.isEmpty() { // binary operator '<' cannot be applied to two '[Int]' operandsif path < minPath || minPath.isEmpty() { // cannot call value of non-function type 'Bool'for (di, dj) in [(-1, 0), (1, 0), (0, -1), (0, 1)].indices { // tuple pattern cannot match values of non-tuple type 'Int'func minPath(grid: [[Int]], k: Int) -> [Int] {
var result = [Int]()
var visited = Array(repeating: Array(repeating: false, count: grid.count), count: grid.count)
var directions = [(-1, 0), (1, 0), (0, -1), (0, 1)]
var minDist = Int.max
var cur = (0, 0)
var dist = 0
var path = [Int]()
func dfs(_ x: Int, _ y: Int, _ d: Int) {
if d > minDist {
return
}
if x < 0 || x >= grid.count || y < 0 || y >= grid.count || visited[x][y] {
return
}
visited[x][y] = true
path.append(grid[x][y])
if path.count == k {
if d < minDist {
minDist = d
result = Array(path)
}
} else {
for (dx, dy) in directions {
dfs(x + dx, y + dy, d + 1)
}
}
path.removeLast()
visited[x][y] = false
}
for i in 0..<grid.count {
for j in 0..<grid.count {
dfs(i, j, 0)
}
}
return result
}```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 result = [Int]()
var visited = Array(repeating: Array(repeating: false, count: grid.count), count: grid.count)
var directions = [(-1, 0), (1, 0), (0, -1), (0, 1)]
var minDist = Int.max
var cur = (0, 0)
var dist = 0
var path = [Int]()
func dfs(_ x: Int, _ y: Int, _ d: Int) {
if d > minDist {
return
}
if x < 0 || x >= grid.count || y < 0 || y >= grid.count || visited[x][y] {
return
}
visited[x][y] = true
path.append(grid[x][y])
if path.count == k {
if d < minDist {
minDist = d
result = Array(path)
}
} else {
for (dx, dy) in directions {
dfs(x + dx, y + dy, d + 1)
}
}
path.removeLast()
visited[x][y] = false
}
for i in 0..<grid.count {
for j in 0..<grid.count {
dfs(i, j, 0)
}
}
return result
}
``````
```swift
// Test cases
print(minPath(grid: [[1, 2, 3], [4, 5, 6], [7, 8, 9]], k: 3)) // [1, 2, 1]
print(minPath(grid: [[5, 9, 3], [4, 1, 6], [7, 8, 2]], k: 1)) // [1]
```var directions = [(-1, 0), (1, 0), (0, -1), (0, 1)] // variable 'directions' was never mutated; consider changing to 'let' constantvar cur = (0, 0) // initialization of variable 'cur' was never used; consider replacing with assignment to '_' or removing itvar dist = 0 // initialization of variable 'dist' was never used; consider replacing with assignment to '_' or removing it // XCTAssertTrue failedfunc minPath(grid: [[Int]], k: Int) -> [Int] {
var result = [Int]()
var visited = Array(repeating: Array(repeating: false, count: grid.count), count: grid.count)
var directions = [(-1, 0), (1, 0), (0, -1), (0, 1)]
var minDist = Int.max
var cur = (0, 0)
func dfs(_ x: Int, _ y: Int, _ dist: Int) {
if dist >= minDist { return }
if x < 0 || x >= grid.count || y < 0 || y >= grid.count || visited[x][y] { return }
visited[x][y] = true
if dist == k {
result = Array(grid[x].prefix(k))
minDist = dist
} else {
for d in directions {
dfs(x + d.0, y + d.1, dist + 1)
}
}
visited[x][y] = false
}
dfs(0, 0, 0)
return result
}```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 result = [Int]()
var visited = Array(repeating: Array(repeating: false, count: grid.count), count: grid.count)
var directions = [(-1, 0), (1, 0), (0, -1), (0, 1)]
var minDist = Int.max
var cur = (0, 0)
func dfs(_ x: Int, _ y: Int, _ dist: Int) {
if dist >= minDist { return }
if x < 0 || x >= grid.count || y < 0 || y >= grid.count || visited[x][y] { return }
visited[x][y] = true
if dist == k {
result = Array(grid[x].prefix(k))
minDist = dist
} else {
for d in directions {
dfs(x + d.0, y + d.1, dist + 1)
}
}
visited[x][y] = false
}
dfs(0, 0, 0)
return result
}
``````
```swift
// Test cases
print(minPath(grid: [[1, 2, 3], [4, 5, 6], [7, 8, 9]], k: 3)) // [1, 2, 1]
print(minPath(grid: [[5, 9, 3], [4, 1, 6], [7, 8, 2]], k: 1)) // [1]
```var directions = [(-1, 0), (1, 0), (0, -1), (0, 1)] // variable 'directions' was never mutated; consider changing to 'let' constantvar cur = (0, 0) // initialization of variable 'cur' was never used; consider replacing with assignment to '_' or removing it // XCTAssertTrue failedfunc minPath(grid: [[Int]], k: Int) -> [Int] {
let n = grid.count
var dp = Array(repeating: Array(repeating: Array(repeating: Int.max, count: k+1), count: n), count: n)
var parent = Array(repeating: Array(repeating: (-1, -1), count: n), count: n)
dp[0][0][1] = grid[0][0]
let moves = [(0, 1), (1, 0), (0, -1), (-1, 0)]
var pq = [(grid[0][0], 0, 0, 1)]
while !pq.isEmpty {
let (cost, x, y, steps) = pq.removeFirst()
if steps > k {
continue
}
for move in moves {
let nx = x + move.0
let ny = y + move.1
if nx >= 0 && nx < n && ny >= 0 && ny < n {
let newCost = cost + grid[nx][ny]
if newCost < dp[nx][ny][steps+1] {
dp[nx][ny][steps+1] = newCost
parent[nx][ny] = (x, y)
pq.append((newCost, nx, ny, steps+1))
pq.sort(by: { $0.0 > $1.0 })
}
}
}
}
var result = [Int]()
var curX = n - 1
var curY = n - 1
var curSteps = k
while curSteps > 0 {
result.append(grid[curX][curY])
let (prevX, prevY) = parent[curX][curY]
curX = prevX
curY = prevY
curSteps -= 1
}
result.append(grid[0][0])
result.reverse()
return result
}```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] {
let n = grid.count
var dp = Array(repeating: Array(repeating: Array(repeating: Int.max, count: k+1), count: n), count: n)
var parent = Array(repeating: Array(repeating: (-1, -1), count: n), count: n)
dp[0][0][1] = grid[0][0]
let moves = [(0, 1), (1, 0), (0, -1), (-1, 0)]
var pq = [(grid[0][0], 0, 0, 1)]
while !pq.isEmpty {
let (cost, x, y, steps) = pq.removeFirst()
if steps > k {
continue
}
for move in moves {
let nx = x + move.0
let ny = y + move.1
if nx >= 0 && nx < n && ny >= 0 && ny < n {
let newCost = cost + grid[nx][ny]
if newCost < dp[nx][ny][steps+1] {
dp[nx][ny][steps+1] = newCost
parent[nx][ny] = (x, y)
pq.append((newCost, nx, ny, steps+1))
pq.sort(by: { $0.0 > $1.0 })
}
}
}
}
var result = [Int]()
var curX = n - 1
var curY = n - 1
var curSteps = k
while curSteps > 0 {
result.append(grid[curX][curY])
let (prevX, prevY) = parent[curX][curY]
curX = prevX
curY = prevY
curSteps -= 1
}
result.append(grid[0][0])
result.reverse()
return result
}
``````
```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] {
let n = grid.count
var dp = Array(repeating: Array(repeating: Array(repeating: Int.max, count: k+1), count: n), count: n)
var parent = // Fatal error: Index out of rangefunc tri(n: Int) -> [Int] {
var result = [Int](repeating: 0, count: n + 1)
result[0] = 1
if n > 0 {
result[1] = 3
}
if n > 1 {
result[2] = 2
}
for i in 3...n {
if i % 2 == 0 {
result[i] = 1 + i / 2
} else {
result[i] = result[i - 1] + result[i - 2] + result[i - 3]
}
}
return result
}```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 result = [Int](repeating: 0, count: n + 1)
result[0] = 1
if n > 0 {
result[1] = 3
}
if n > 1 {
result[2] = 2
}
for i in 3...n {
if i % 2 == 0 {
result[i] = 1 + i / 2
} else {
result[i] = result[i - 1] + result[i - 2] + result[i - 3]
}
}
return result
}
``````
```swift
// The Tribonacci sequence is a sequence of integers 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 - 3), if n is odd.
// For example:
// tri(2) = 1 + (2 / 2) = 2
// tri(4) = 3
// tri(3) = tri(2) + tri(1) + tri(0)
// = 2 + 3 + 1 = 6
// You are given a non-negative integer number n, you have to return an array of the
// first n + 1 numbers of the Tribonacci sequence.
// Examples:
// tri(n: 3) == [1, 3, 2, 6]
func tri(n: Int) -> [Int] {
var result = [Int](repeating: 0, count: n + 1)
result[0] = 1
if n > 0 {
result[1] = 3
}
if n > 1 {
result[2] = 2
}
for i in 3...n {
if i % 2 == 0 {
result[i] = 1 + i / 2
} else {
result[i] = result[i - 1] + result[i - 2] + result[i - 3]
}
}
return result
}
``` // XCTAssertTrue failedfunc tri(n: Int) -> [Int] {
var result = [Int](repeating: 0, count: n + 1)
result[0] = 1
if n > 0 {
result[1] = 3
}
if n > 1 {
result[2] = 2
}
for i in 3...n {
if i % 2 == 0 {
result[i] = 1 + i / 2
} else {
result[i] = result[i - 1] + result[i - 2] + result[i - 3]
}
}
return result
}```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 result = [Int](repeating: 0, count: n + 1)
result[0] = 1
if n > 0 {
result[1] = 3
}
if n > 1 {
result[2] = 2
}
for i in 3...n {
if i % 2 == 0 {
result[i] = 1 + i / 2
} else {
result[i] = result[i - 1] + result[i - 2] + result[i - 3]
}
}
return result
}
``````
```swift
// The Tribonacci sequence is a sequence of integers 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 result = [Int](repeating: 0, count: n + 1)
result[0] = 1
if n > 0 {
result[1] = 3
}
if n > 1 {
result[2] = 2
}
for i in 3...n {
if i % 2 == 0 {
result[i] = 1 + i / 2
} else {
result[i] = result[i - 1] + result[i - 2] + result[i - 3]
}
}
return result
}
``` // XCTAssertTrue failedfunc tri(n: Int) -> [Int] {
var result = [Int](repeating: 0, count: n + 1)
result[0] = 1
if n > 0 {
result[1] = 3
}
if n > 1 {
result[2] = 2
}
for i in 3...n {
if i % 2 == 0 {
result[i] = 1 + i / 2
} else {
result[i] = result[i - 1] + result[i - 2] + result[i + 1]
}
}
return result
}```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 result = [Int](repeating: 0, count: n + 1)
result[0] = 1
if n > 0 {
result[1] = 3
}
if n > 1 {
result[2] = 2
}
for i in 3...n {
if i % 2 == 0 {
result[i] = 1 + i / 2
} else {
result[i] = result[i - 1] + result[i - 2] + result[i + 1]
}
}
return result
}
``````
```swift
// The Tribonacci sequence is a sequence of integers defined by the recurrence relation:
// tri(1) = 3
// tri(2) = 2
// tri(n) = tri(n - 1) + tri(n - 2) + tri(n - 3) for n > 2
// The first few numbers in the sequence are: 3, 2, 3, 4, 7, 13, 24, 44, 81, 149, 274, 504, 927, 1705, 3136, 5768, 10609, 19513, 35890, 66012, 121415, 223317, 410744, 755476, 1372310, 2462622, 4385348, 7755876, 13652292, 23900084, 41502710, 71507508, 122817516, 210421836, 361047124, 621142140, 1066028276, 1822242644, 3089766684, 5205458340, 8745428444, 14661122188, 24502545668, 41844183132, 71849573604, 122516567044, 207445043756, 349060873708, 584516257364, 974671302284, 1615177181620, 2655947514140, 4346657166780, 7087505041860, 11522170267540, 18619675309400, 30001246577040, 48171851986440, 76273098563500, 119144000541940, 184916190005460, 286450270547400, 443456460552860, 686906731101340, 1063363191654200, 1641269602755540, 2522632794410740, 3867897397166280, 5921269191577020, 9052776587743300, 13710955789319580, 20593782 // Fatal error: Index out of rangefunc tri(n: Int) -> [Int] {
var result = [Int]()
for i in 1...n+1 {
if i == 1 {
result.append(3)
} else if i % 2 == 0 {
result.append(1 + i / 2)
} else {
result.append(result[i - 1] + result[i - 2] + result[i])
}
}
return result
}```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 result = [Int]()
for i in 1...n+1 {
if i == 1 {
result.append(3)
} else if i % 2 == 0 {
result.append(1 + i / 2)
} else {
result.append(result[i - 1] + result[i - 2] + result[i])
}
}
return result
}
``````
```swift
tri(n: 3)
``` // Fatal error: Index out of rangefunc tri(n: Int) -> [Int] {
var result = [Int]()
for i in 1...n+1 {
if i == 1 {
result.append(3)
} else if i % 2 == 0 {
result.append(1 + i / 2)
} else {
result.append(result[i - 1] + result[i - 2] + result[i])
}
}
return result
}```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 result = [Int]()
for i in 1...n+1 {
if i == 1 {
result.append(3)
} else if i % 2 == 0 {
result.append(1 + i / 2)
} else {
result.append(result[i - 1] + result[i - 2] + result[i])
}
}
return result
}
``````
```swift
tri(n: 3)
``` // Fatal error: Index out of rangefunc tri(n: Int) -> [Int] {
var result = [Int]()
result.append(1)
result.append(3)
result.append(2)
result.append(8)
for i in 4...n {
if i % 2 == 0 {
result.append(1 + i / 2)
} else {
result.append(result[i - 1] + result[i - 2] + result[i + 1])
}
}
return result
}```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 result = [Int]()
result.append(1)
result.append(3)
result.append(2)
result.append(8)
for i in 4...n {
if i % 2 == 0 {
result.append(1 + i / 2)
} else {
result.append(result[i - 1] + result[i - 2] + result[i + 1])
}
}
return result
}
``````
```swift
tri(n: 3)
``` // Fatal error: Range requires lowerBound <= upperBoundfunc tri(n: Int) -> [Int] {
var result = [Int](repeating: 0, count: n + 1)
result[0] = 1
if n > 0 {
result[1] = 3
}
if n > 1 {
result[2] = 2
}
for i in 3...n {
if i % 2 == 0 {
result[i] = 1 + i / 2
} else {
result[i] = result[i - 1] + result[i - 2] + result[i + 1]
}
}
return result
}```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 result = [Int](repeating: 0, count: n + 1)
result[0] = 1
if n > 0 {
result[1] = 3
}
if n > 1 {
result[2] = 2
}
for i in 3...n {
if i % 2 == 0 {
result[i] = 1 + i / 2
} else {
result[i] = result[i - 1] + result[i - 2] + result[i + 1]
}
}
return result
}
``````
```swift
// The Tribonacci sequence is a sequence of integers 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 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 result = [Int](repeating: 0, count: n + 1)
result[0] = 1
if n > 0 {
result[1] = 3
}
if n > 1 {
result[2] = 2
}
for i in 3...n {
if i % 2 == 0 {
result[i] = 1 + i / 2
} else {
result[i] = result[i - 1] + result[i - 2] + result[i + 1]
}
}
return result
}
``` // Fatal error: Index out of rangefunc tri(n: Int) -> [Int] {
var result = [Int]()
for i in 1...n+1 {
if i == 1 {
result.append(3)
} else if i % 2 == 0 {
result.append(1 + i / 2)
} else {
result.append(result[i - 1] + result[i - 2] + result[i])
}
}
return result
}```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 result = [Int]()
for i in 1...n+1 {
if i == 1 {
result.append(3)
} else if i % 2 == 0 {
result.append(1 + i / 2)
} else {
result.append(result[i - 1] + result[i - 2] + result[i])
}
}
return result
}
``````
```swift
// The Tribonacci sequence is a sequence of integers 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 result = [Int]()
for i in 1...n+1 {
if i == 1 {
result.append(3)
} else if i % 2 == 0 {
result.append(1 + i / 2)
} else {
result.append(result[i - 1] + result[i - 2] + result[i])
}
}
return result
}
``` // Fatal error: Index out of rangefunc tri(n: Int) -> [Int] {
var result = [Int]()
for i in 1...n+1 {
if i == 1 {
result.append(3)
} else if i % 2 == 0 {
result.append(1 + i / 2)
} else {
result.append(result[i - 1] + result[i - 2] + result[i])
}
}
return result
}```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 result = [Int]()
for i in 1...n+1 {
if i == 1 {
result.append(3)
} else if i % 2 == 0 {
result.append(1 + i / 2)
} else {
result.append(result[i - 1] + result[i - 2] + result[i])
}
}
return result
}
``````
```swift
// The Tribonacci sequence is a sequence of integers 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 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 result = [Int]()
for i in 1...n+1 {
if i == 1 {
result.append(3)
} else if i % 2 == 0 {
result.append(1 + i / 2)
} else {
result.append(result[i - 1] + result[i - 2] + result[i])
}
}
return result
}
``` // Fatal error: Index out of rangefunc tri(n: Int) -> [Int] {
var result = [Int]()
for i in 1...n+1 {
if i == 1 {
result.append(3)
} else if i % 2 == 0 {
result.append(1 + i / 2)
} else {
result.append(result[i - 1] + result[i - 2] + result[i])
}
}
return result
}```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 result = [Int]()
for i in 1...n+1 {
if i == 1 {
result.append(3)
} else if i % 2 == 0 {
result.append(1 + i / 2)
} else {
result.append(result[i - 1] + result[i - 2] + result[i])
}
}
return result
}
``````
```swift
// The Tribonacci sequence is a sequence of integers defined by the recurrence relation:
// 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 result = [Int]()
for i in 1...n+1 {
if i == 1 {
result.append(3)
} else if i % 2 == 0 {
result.append(1 + i / 2)
} else {
result.append(result[i - 1] + result[i - 2] + result[i])
}
}
return result
}
``` // Fatal error: Index out of rangefunc digits(n: Int) -> Int {
var product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 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 product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 10
}
return product
}
``````
```swift
// Test cases
print(digits(n: 1)) // 1
print(digits(n: 4)) // 0
print(digits(n: 235)) // 15
``` // XCTAssertTrue failedfunc digits(n: Int) -> Int {
var product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 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 product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 10
}
return product
}
``````
```swift
// Test cases
print(digits(n: 1)) // 1
print(digits(n: 4)) // 0
print(digits(n: 235)) // 15
``` // XCTAssertTrue failedfunc digits(n: Int) -> Int {
var product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 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 product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 10
}
return product
}
``````
```swift
// Test cases
print(digits(n: 1)) // 1
print(digits(n: 4)) // 0
print(digits(n: 235)) // 15
``` // XCTAssertTrue failedfunc digits(n: Int) -> Int {
var product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 == 1 {
product *= digit
}
num /= 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 product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 == 1 {
product *= digit
}
num /= 10
}
return product
}
``````
```swift
// Test cases
print(digits(n: 1)) // 1
print(digits(n: 4)) // 0
print(digits(n: 235)) // 15
``` // XCTAssertTrue failedfunc digits(n: Int) -> Int {
var product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 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 product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 10
}
return product
}
``````
```swift
// Test cases
print(digits(n: 1)) // 1
print(digits(n: 4)) // 0
print(digits(n: 235)) // 15
``` // XCTAssertTrue failedfunc digits(n: Int) -> Int {
var product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 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 product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 10
}
return product
}
``````
```swift
// Testing the function
print(digits(n: 1)) // 1
print(digits(n: 4)) // 0
print(digits(n: 235)) // 15
``` // XCTAssertTrue failedfunc digits(n: Int) -> Int {
var product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 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 product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 10
}
return product
}
``````
```swift
func digits(n: Int) -> Int {
var product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 10
}
return product
}
digits(n: 1)
``` // XCTAssertTrue failedfunc digits(n: Int) -> Int {
var product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 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 product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 10
}
return product
}
// Test cases
print(digits(n: 1)) // 1
print(digits(n: 4)) // 0
print(digits(n: 235)) // 15
`````````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 product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 10
}
return product
}
// Test cases
print(digits(n: 1)) // 1
print(digits(n: 4)) // 0
print(digits(n: 235)) // 15
``` // XCTAssertTrue failedfunc digits(n: Int) -> Int {
var product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 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 product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 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 product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 10
}
return product
}
// Test cases
print(digits(n: 1)) // 1
print(digits(n: 4)) // 0
print(digits(n: 235)) // 15
``` // XCTAssertTrue failedfunc digits(n: Int) -> Int {
var product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 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 product = 1
var num = n
while num > 0 {
let digit = num % 10
if digit % 2 != 0 {
product *= digit
}
num /= 10
}
return product
}
``````
```swift
// Test cases
print(digits(n: 1)) // 1
print(digits(n: 4)) // 0
print(digits(n: 235)) // 15
``` // XCTAssertTrue failedfunc isNested(string: String) -> Bool {
var stack = [Character]()
for char in string {
if char == "[" {
stack.append(char)
} else if char == "]" {
if stack.isEmpty {
return false
} else {
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
} else {
stack.removeLast()
}
}
}
return !stack.isEmpty
}
``````
```python
# 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("[[]]") == True
# isNested("[]]]]]]][[[[[]") == False
# isNested("[][]") == False
# isNested("[]") == False
# isNested("[[][]]") == True
# isNested("[[]][[") == True
def isNested(string):
stack = []
for char in string:
if char == "[":
stack.append(char)
elif char == "]":
if not stack:
return False
else:
stack.pop()
return bool(stack)
``` // XCTAssertTrue failedfunc isNested(string: String) -> Bool {
var stack = [Character]()
for char in string {
if char == "[" {
stack.append(char)
} else {
if stack.isEmpty {
return false
}
stack.removeLast()
}
}
return stack.isEmpty ? false : true
}```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 stack.isEmpty {
return false
}
stack.removeLast()
}
}
return stack.isEmpty ? false : true
}
``````
```swift
// Test the function
print(isNested(string: "[[]]")) // true
print(isNested(string: "[]]]]]]][[[[[]")) // false
print(isNested(string: "[][]")) // false
print(isNested(string: "[]")) // false
print(isNested(string: "[[][]]")) // true
print(isNested(string: "[[]][[")) // true
``` // XCTAssertTrue failedfunc isNested(string: String) -> Bool {
var stack: [Character] = []
for char in string {
if char == "[" {
stack.append(char)
} else if char == "]" {
if stack.isEmpty {
return false
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
``````
```swift
// Test the function with some examples
print(isNested(string: "[[]]")) // true
print(isNested(string: "[]]]]]]][[[[[]")) // false
print(isNested(string: "[][]")) // false
print(isNested(string: "[]")) // false
print(isNested(string: "[[][]]")) // true
print(isNested(string: "[[]][[")) // true
``` // XCTAssertTrue failedfunc isNested(string: String) -> Bool {
var stack = [Character]()
for char in string {
if char == "[" {
stack.append(char)
} else if char == "]" {
if stack.isEmpty {
return false
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
``````
```python
def isNested(string):
stack = []
for char in string:
if char == "[":
stack.append(char)
elif char == "]":
if not stack:
return False
else:
stack.pop()
return not stack
``` // XCTAssertTrue failedfunc isNested(string: String) -> Bool {
var stack = [Character]()
for char in string {
if char == "[" {
stack.append(char)
} else if char == "]" {
if stack.isEmpty {
return false
} else {
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
} else {
stack.removeLast()
}
}
}
return stack.isEmpty
}
``````
```swift
// Test the function with some examples
print(isNested(string: "[[]]")) // true
print(isNested(string: "[]]]]]]][[[[[]")) // false
print(isNested(string: "[][]")) // false
print(isNested(string: "[]")) // false
print(isNested(string: "[[][]]")) // true
print(isNested(string: "[[]][[")) // true
``` // XCTAssertTrue failed