func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        var cap = 0
        var low = 0
        for i in ext {
            if i.isUppercase {
                cap += 1
            } else {
                low += 1
            }
        }
        if cap - low > max {
            max = cap - low
            max_ext = ext
        }
    }
    return className + "." + max_ext
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        var cap = 0
        var low = 0
        for i in ext {
            if i.isUppercase {
                cap += 1
            } else {
                low += 1
            }
        }
        if cap - low > max {
            max = cap - low
            max_ext = ext
        }
    }
    return className + "." + max_ext
}
<|file_separator|>

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var max = 0
    var max_ext = ""
    for ext in extensions {
        let cap = ext.filter { $0.isUppercase }.count
        let sm = ext.filter { $0.isLowercase }.count
        let strength = cap - sm
        if strength > max {
            max = strength
            max_ext = ext
        }
    }
    return className + "." + max_ext
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var max = 0
    var max_ext = ""
    for ext in extensions {
        let cap = ext.filter { $0.isUppercase }.count
        let sm = ext.filter { $0.isLowercase }.count
        let strength = cap - sm
        if strength > max {
            max = strength
            max_ext = ext
        }
    }
    return className + "." + max_ext
}
<|file_separator|>

func Strongest_Extension(className: String, extensions: [String]) -> String {
  // your code here
  var max = 0
  var max_ext = ""
  for ext in extensions {
    let cap = ext.filter { $0.isUppercase }.count
    let sm = ext.filter { $0.isLowercase }.count
    let strength = cap - sm
    if strength > max {
      max = strength
      max_ext = ext
    } else if strength == max {
      if ext < max_ext {
        max_ext = ext
      }
    }
  }
  return className + "." + max_ext
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
  // your code here
  var max = 0
  var max_ext = ""
  for ext in extensions {
    let cap = ext.filter { $0.isUppercase }.count
    let sm = ext.filter { $0.isLowercase }.count
    let strength = cap - sm
    if strength > max {
      max = strength
      max_ext = ext
    } else if strength == max {
      if ext < max_ext {
        max_ext = ext
      }
    }
  }
  return className + "." + max_ext
}
<|file_separator|>

func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        if ext.count - ext.lowercased().count > max {
            max = ext.count - ext.lowercased().count
            max_ext = ext
        }
    }
    return className + "." + max_ext
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        if ext.count - ext.lowercased().count > max {
            max = ext.count - ext.lowercased().count
            max_ext = ext
        }
    }
    return className + "." + max_ext
}
<|file_separator|>

func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        var cap = 0
        var sm = 0
        for i in 0..<ext.count {
            if ext[ext.index(ext.startIndex, offsetBy: i)] >= "A" && ext[ext.index(ext.startIndex, offsetBy: i)] <= "Z" {
                cap += 1
            } else {
                sm += 1
            }
        }
        if cap - sm > max {
            max = cap - sm
            max_ext = ext
        } else if cap - sm == max {
            if ext < max_ext {
                max_ext = ext
            }
        }
    }
    return className + "." + max_ext
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        var cap = 0
        var sm = 0
        for i in 0..<ext.count {
            if ext[ext.index(ext.startIndex, offsetBy: i)] >= "A" && ext[ext.index(ext.startIndex, offsetBy: i)] <= "Z" {
                cap += 1
            } else {
                sm += 1
            }
        }
        if cap - sm > max {
            max = cap - sm
            max_ext = ext
        } else if cap - sm == max {
            if ext < max_ext {
                max_ext = ext
            }
        }
    }
    return className + "." + max_ext
}
<|file_separator|>

func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_name = ""
    for ext in extensions {
        var cap = 0
        var sm = 0
        for i in ext {
            if i.isUppercase {
                cap += 1
            } else {
                sm += 1
            }
        }
        if cap - sm > max {
            max = cap - sm
            max_name = ext
        }
    }
    return className + "." + max_name
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_name = ""
    for ext in extensions {
        var cap = 0
        var sm = 0
        for i in ext {
            if i.isUppercase {
                cap += 1
            } else {
                sm += 1
            }
        }
        if cap - sm > max {
            max = cap - sm
            max_name = ext
        }
    }
    return className + "." + max_name
}
<|file_separator|>

func Strongest_Extension(className: String, extensions: [String]) -> String {
    // Write your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        let cap = ext.filter { $0.isUppercase }.count
        let sm = ext.filter { $0.isLowercase }.count
        let strength = cap - sm
        if strength > max {
            max = strength
            max_ext = ext
        } else if strength == max {
            if ext < max_ext {
                max_ext = ext
            }
        }
    }
    return className + "." + max_ext
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    // Write your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        let cap = ext.filter { $0.isUppercase }.count
        let sm = ext.filter { $0.isLowercase }.count
        let strength = cap - sm
        if strength > max {
            max = strength
            max_ext = ext
        } else if strength == max {
            if ext < max_ext {
                max_ext = ext
            }
        }
    }
    return className + "." + max_ext
}
<|file_separator|>

func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        if ext.count - ext.lowercased().count > max {
            max = ext.count - ext.lowercased().count
            max_ext = ext
        }
    }
    return className + "." + max_ext
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    var max = 0
    var max_ext = ""
    for ext in extensions {
        if ext.count - ext.lowercased().count > max {
            max = ext.count - ext.lowercased().count
            max_ext = ext
        }
    }
    return className + "." + max_ext
}
<|file_separator|>

func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code
    let class_name = className.lowercased()
    var max_strength = -1
    var max_ext = ""
    for ext in extensions {
        let ext_name = ext.lowercased()
        let ext_strength = ext_name.count - ext_name.filter { $0.isUppercase }.count
        if ext_strength > max_strength {
            max_strength = ext_strength
            max_ext = ext_name
        } else if ext_strength == max_strength {
            if ext_name < max_ext {
                max_ext = ext_name
            }
        }
    }
    return class_name + "." + max_ext
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code
    let class_name = className.lowercased()
    var max_strength = -1
    var max_ext = ""
    for ext in extensions {
        let ext_name = ext.lowercased()
        let ext_strength = ext_name.count - ext_name.filter { $0.isUppercase }.count
        if ext_strength > max_strength {
            max_strength = ext_strength
            max_ext = ext_name
        } else if ext_strength == max_strength {
            if ext_name < max_ext {
                max_ext = ext_name
            }
        }
    }
    return class_name + "." + max_ext
}
<|file_separator|>

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var max = 0
    var max_ext = ""
    for ext in extensions {
        let cap = ext.filter { $0.isUppercase }.count
        let sm = ext.filter { $0.isLowercase }.count
        let strength = cap - sm
        if strength > max {
            max = strength
            max_ext = ext
        }
    }
    return className + "." + max_ext
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var max = 0
    var max_ext = ""
    for ext in extensions {
        let cap = ext.filter { $0.isUppercase }.count
        let sm = ext.filter { $0.isLowercase }.count
        let strength = cap - sm
        if strength > max {
            max = strength
            max_ext = ext
        }
    }
    return className + "." + max_ext
}
<|file_separator|>

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = -1.0

    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName)

        if extensionStrength > strongestStrength {
            strongestExtension = extensionName
            strongestStrength = extensionStrength
        }
    }

    return "\(className.lowercased()).\(strongestExtension.lowercased())"
}

func calculateExtensionStrength(_ extensionName: String) -> Double {
    var cap = 0
    var sm = 0

    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }

    return Double(cap - sm)
}

<bos><start_of_turn>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = -1.0

    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName)

        if extensionStrength > strongestStrength {
            strongestExtension = extensionName
            strongestStrength = extensionStrength
        }
    }

    return "\(className.lowercased()).\(strongestExtension.lowercased())"
}

func calculateExtensionStrength(_ extensionName: String) -> Double {
    var cap = 0
    var sm = 0

    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }

    return Double(cap - sm)
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = -1.0

    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName)

        if extensionStrength > strongestStrength {
            strongestExtension = extensionName
            strongestStrength = extensionStrength
        }
    }

    return "\(className.lowercased()).\(strongestExtension.lowercased())"
}

func calculateExtensionStrength(_ extensionName: String) -> Double {
    var cap = 0
    var sm = 0

    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }

    return Double(cap - sm)
}

<bos><start_of_turn>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = -1.0

    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName)

        if extensionStrength > strongestStrength {
            strongestExtension = extensionName
            strongestStrength = extensionStrength
        }
    }

    return "\(className.lowercased()).\(strongestExtension.lowercased())"
}

func calculateExtensionStrength(_ extensionName: String) -> Double {
    var cap = 0
    var sm = 0

    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }

    return Double(cap - sm)
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = -1.0
    
    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName)
        
        if extensionStrength > strongestStrength {
            strongestExtension = extensionName
            strongestStrength = extensionStrength
        } else if extensionStrength == strongestStrength {
            if extensionName < strongestExtension {
                strongestExtension = extensionName
            }
        }
    }
    
    return "\(className.lowercased()).\(strongestExtension.lowercased())"
}

func calculateExtensionStrength(_ extensionName: String) -> Double {
    var cap = 0
    var sm = 0
    
    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }
    
    return Double(cap - sm)
}

<bos><start_of_turn>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = -1.0
    
    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName)
        
        if extensionStrength > strongestStrength {
            strongestExtension = extensionName
            strongestStrength = extensionStrength
        } else if extensionStrength == strongestStrength {
            if extensionName < strongestExtension {
                strongestExtension = extensionName
            }
        }
    }
    
    return "\(className.lowercased()).\(strongestExtension.lowercased())"
}

func calculateExtensionStrength(_ extensionName: String) -> Double {
    var cap = 0
    var sm = 0
    
    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }
    
    return Double(cap - sm)
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = -1.0
    
    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName)
        
        if extensionStrength > strongestStrength {
            strongestStrength = extensionStrength
            strongestExtension = extensionName
        }
    }
    
    return "\(className.lowercased()).\(strongestExtension.lowercased())"
}

func calculateExtensionStrength(_ extensionName: String) -> Double {
    var cap = 0
    var sm = 0
    
    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }
    
    return Double(cap - sm)
}

<bos><start_of_turn>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = -1.0
    
    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName)
        
        if extensionStrength > strongestStrength {
            strongestStrength = extensionStrength
            strongestExtension = extensionName
        }
    }
    
    return "\(className.lowercased()).\(strongestExtension.lowercased())"
}

func calculateExtensionStrength(_ extensionName: String) -> Double {
    var cap = 0
    var sm = 0
    
    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }
    
    return Double(cap - sm)
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = -1.0

    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName: extensionName)

        if extensionStrength > strongestStrength {
            strongestExtension = extensionName
            strongestStrength = extensionStrength
        }
    }

    return "\(className.lowercased()).\(strongestExtension.lowercased())"
}

func calculateExtensionStrength(extensionName: String) -> Double {
    var cap = 0
    var sm = 0

    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }

    return Double(cap - sm)
}

<bos><start_of_turn>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = -1.0

    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName: extensionName)

        if extensionStrength > strongestStrength {
            strongestExtension = extensionName
            strongestStrength = extensionStrength
        }
    }

    return "\(className.lowercased()).\(strongestExtension.lowercased())"
}

func calculateExtensionStrength(extensionName: String) -> Double {
    var cap = 0
    var sm = 0

    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }

    return Double(cap - sm)
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = -1.0

    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName: extensionName)

        if extensionStrength > strongestStrength {
            strongestExtension = extensionName
            strongestStrength = extensionStrength
        }
    }

    return "\(className.lowercased()).\(strongestExtension.lowercased())"
}

func calculateExtensionStrength(extensionName: String) -> Double {
    var cap = 0
    var sm = 0

    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }

    return Double(cap - sm)
}

<bos><start_of_turn>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = -1.0

    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName: extensionName)

        if extensionStrength > strongestStrength {
            strongestExtension = extensionName
            strongestStrength = extensionStrength
        }
    }

    return "\(className.lowercased()).\(strongestExtension.lowercased())"
}

func calculateExtensionStrength(extensionName: String) -> Double {
    var cap = 0
    var sm = 0

    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }

    return Double(cap - sm)
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = -1.0

    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName)

        if extensionStrength > strongestStrength {
            strongestStrength = extensionStrength
            strongestExtension = extensionName
        }
    }

    return "\(className.lowercased()).\(strongestExtension.lowercased())"
}

func calculateExtensionStrength(_ extensionName: String) -> Double {
    var cap = 0
    var sm = 0

    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }

    return Double(cap - sm)
}

<bos><start_of_turn>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = -1.0

    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName)

        if extensionStrength > strongestStrength {
            strongestStrength = extensionStrength
            strongestExtension = extensionName
        }
    }

    return "\(className.lowercased()).\(strongestExtension.lowercased())"
}

func calculateExtensionStrength(_ extensionName: String) -> Double {
    var cap = 0
    var sm = 0

    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }

    return Double(cap - sm)
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: String?
    var strongestStrength: Float = -1

    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName)

        if extensionStrength > strongestStrength {
            strongestExtension = extensionName
            strongestStrength = extensionStrength
        }
    }

    if let strongestExtension = strongestExtension {
        return "\(className.lowercased()).\(strongestExtension.lowercased())"
    } else {
        return ""
    }
}

func calculateExtensionStrength(_ extensionName: String) -> Float {
    var cap = 0
    var sm = 0

    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }

    return Float(cap - sm)
}

<bos><start_of_turn>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: String?
    var strongestStrength: Float = -1

    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName)

        if extensionStrength > strongestStrength {
            strongestExtension = extensionName
            strongestStrength = extensionStrength
        }
    }

    if let strongestExtension = strongestExtension {
        return "\(className.lowercased()).\(strongestExtension.lowercased())"
    } else {
        return ""
    }
}

func calculateExtensionStrength(_ extensionName: String) -> Float {
    var cap = 0
    var sm = 0

    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }

    return Float(cap - sm)
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = -1.0

    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName: extensionName)

        if extensionStrength > strongestStrength {
            strongestExtension = extensionName
            strongestStrength = extensionStrength
        }
    }

    return "\(className.lowercased()).\(strongestExtension.lowercased())"
}

func calculateExtensionStrength(extensionName: String) -> Double {
    var cap = 0
    var sm = 0

    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }

    return Double(cap - sm)
}

<bos><start_of_turn>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = -1.0

    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName: extensionName)

        if extensionStrength > strongestStrength {
            strongestExtension = extensionName
            strongestStrength = extensionStrength
        }
    }

    return "\(className.lowercased()).\(strongestExtension.lowercased())"
}

func calculateExtensionStrength(extensionName: String) -> Double {
    var cap = 0
    var sm = 0

    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }

    return Double(cap - sm)
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = -1.0

    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName)

        if extensionStrength > strongestStrength {
            strongestExtension = extensionName
            strongestStrength = extensionStrength
        } else if extensionStrength == strongestStrength {
            if extensionName < strongestExtension {
                strongestExtension = extensionName
            }
        }
    }

    return "\(className.lowercased()).\(strongestExtension.lowercased())"
}

func calculateExtensionStrength(_ extensionName: String) -> Double {
    var cap = 0
    var sm = 0

    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }

    return Double(cap - sm)
}

<bos><start_of_turn>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<end_of_turn>
<start_of_turn>model
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = -1.0

    for extensionName in extensions {
        let extensionStrength = calculateExtensionStrength(extensionName)

        if extensionStrength > strongestStrength {
            strongestExtension = extensionName
            strongestStrength = extensionStrength
        } else if extensionStrength == strongestStrength {
            if extensionName < strongestExtension {
                strongestExtension = extensionName
            }
        }
    }

    return "\(className.lowercased()).\(strongestExtension.lowercased())"
}

func calculateExtensionStrength(_ extensionName: String) -> Double {
    var cap = 0
    var sm = 0

    for character in extensionName {
        if character.isUppercase {
            cap += 1
        } else if character.isLowercase {
            sm += 1
        }
    }

    return Double(cap - sm)
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestExtensionStrength = 0
    for extension in extensions {
        let extensionStrength = extension.uppercased().count - extension.lowercased().count
        if extensionStrength > strongestExtensionStrength {
            strongestExtension = extension
            strongestExtensionStrength = extensionStrength
        }
    }
    return className + "." + strongestExtension
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestExtensionStrength = 0
    for extension in extensions {
        let extensionStrength = extension.uppercased().count - extension.lowercased().count
        if extensionStrength > strongestExtensionStrength {
            strongestExtension = extension
            strongestExtensionStrength = extensionStrength
        }
    }
    return className + "." + strongestExtension
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestExtensionStrength = 0
    for extension in extensions {
        let extensionStrength = extension.uppercased().count - extension.lowercased().count
        if extensionStrength > strongestExtensionStrength {
            strongestExtension = className + "." + extension
            strongestExtensionStrength = extensionStrength
        }
    }
    return strongestExtension
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestExtensionStrength = 0
    for extension in extensions {
        let extensionStrength = extension.uppercased().count - extension.lowercased().count
        if extensionStrength > strongestExtensionStrength {
            strongestExtension = className + "." + extension
            strongestExtensionStrength = extensionStrength
        }
    }
    return strongestExtension
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestExtensionStrength = 0
    for extension in extensions {
        let extensionStrength = extension.uppercased().count - extension.lowercased().count
        if extensionStrength > strongestExtensionStrength {
            strongestExtension = className + "." + extension
            strongestExtensionStrength = extensionStrength
        }
    }
    return strongestExtension
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestExtensionStrength = 0
    for extension in extensions {
        let extensionStrength = extension.uppercased().count - extension.lowercased().count
        if extensionStrength > strongestExtensionStrength {
            strongestExtension = className + "." + extension
            strongestExtensionStrength = extensionStrength
        }
    }
    return strongestExtension
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestExtensionStrength = 0
    for extension in extensions {
        let extensionStrength = extension.uppercased().count - extension.lowercased().count
        if extensionStrength > strongestExtensionStrength {
            strongestExtension = extension
            strongestExtensionStrength = extensionStrength
        }
    }
    return className + "." + strongestExtension
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestExtensionStrength = 0
    for extension in extensions {
        let extensionStrength = extension.uppercased().count - extension.lowercased().count
        if extensionStrength > strongestExtensionStrength {
            strongestExtension = extension
            strongestExtensionStrength = extensionStrength
        }
    }
    return className + "." + strongestExtension
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestExtensionStrength = 0
    for extension in extensions {
        let extensionStrength = extension.uppercased().count - extension.lowercased().count
        if extensionStrength > strongestExtensionStrength {
            strongestExtension = extension
            strongestExtensionStrength = extensionStrength
        }
    }
    return className + "." + strongestExtension
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestExtensionStrength = 0
    for extension in extensions {
        let extensionStrength = extension.uppercased().count - extension.lowercased().count
        if extensionStrength > strongestExtensionStrength {
            strongestExtension = extension
            strongestExtensionStrength = extensionStrength
        }
    }
    return className + "." + strongestExtension
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestExtensionStrength = 0
    for extension in extensions {
        let extensionStrength = extension.uppercased().count - extension.lowercased().count
        if extensionStrength > strongestExtensionStrength {
            strongestExtension = className + "." + extension
            strongestExtensionStrength = extensionStrength
        }
    }
    return strongestExtension
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestExtensionStrength = 0
    for extension in extensions {
        let extensionStrength = extension.uppercased().count - extension.lowercased().count
        if extensionStrength > strongestExtensionStrength {
            strongestExtension = className + "." + extension
            strongestExtensionStrength = extensionStrength
        }
    }
    return strongestExtension
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestExtensionStrength = 0
    for extension in extensions {
        let extensionStrength = extension.uppercased().count - extension.lowercased().count
        if extensionStrength > strongestExtensionStrength {
            strongestExtension = className + "." + extension
            strongestExtensionStrength = extensionStrength
        }
    }
    return strongestExtension
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestExtensionStrength = 0
    for extension in extensions {
        let extensionStrength = extension.uppercased().count - extension.lowercased().count
        if extensionStrength > strongestExtensionStrength {
            strongestExtension = className + "." + extension
            strongestExtensionStrength = extensionStrength
        }
    }
    return strongestExtension
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestExtensionStrength = 0
    for extension in extensions {
        let extensionStrength = extension.uppercased().count - extension.lowercased().count
        if extensionStrength > strongestExtensionStrength {
            strongestExtension = className + "." + extension
            strongestExtensionStrength = extensionStrength
        }
    }
    return strongestExtension
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestExtensionStrength = 0
    for extension in extensions {
        let extensionStrength = extension.uppercased().count - extension.lowercased().count
        if extensionStrength > strongestExtensionStrength {
            strongestExtension = className + "." + extension
            strongestExtensionStrength = extensionStrength
        }
    }
    return strongestExtension
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var max = 0
    var strongest = ""
    for extension in extensions {
        let strength = extension.uppercased().count - extension.lowercased().count
        if strength > max {
            max = strength
            strongest = className + "." + extension
        }
    }
    return strongest
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var max = 0
    var strongest = ""
    for extension in extensions {
        let strength = extension.uppercased().count - extension.lowercased().count
        if strength > max {
            max = strength
            strongest = className + "." + extension
        }
    }
    return strongest
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestExtensionStrength = 0
    var strongestExtensionName = ""
    var strongestExtensionNameStrength = 0
    for extension in extensions {
        let extensionName = extension.lowercased()
        let extensionNameStrength = extensionName.count - extensionName.uppercased().count
        if extensionNameStrength > strongestExtensionStrength {
            strongestExtension = extension
            strongestExtensionStrength = extensionNameStrength
            strongestExtensionName = className + "." + extension
            strongestExtensionNameStrength = strongestExtensionStrength
        } else if extensionNameStrength == strongestExtensionStrength {
            if extensionName < strongestExtensionName {
                strongestExtension = extension
                strongestExtensionStrength = extensionNameStrength
                strongestExtensionName = className + "." + extension
                strongestExtensionNameStrength = strongestExtensionStrength
            }
        }
    }
    return strongestExtensionName
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestExtensionStrength = 0
    var strongestExtensionName = ""
    var strongestExtensionNameStrength = 0
    for extension in extensions {
        let extensionName = extension.lowercased()
        let extensionNameStrength = extensionName.count - extensionName.uppercased().count
        if extensionNameStrength > strongestExtensionStrength {
            strongestExtension = extension
            strongestExtensionStrength = extensionNameStrength
            strongestExtensionName = className + "." + extension
            strongestExtensionNameStrength = strongestExtensionStrength
        } else if extensionNameStrength == strongestExtensionStrength {
            if extensionName < strongestExtensionName {
                strongestExtension = extension
                strongestExtensionStrength = extensionNameStrength
                strongestExtensionName = className + "." + extension
                strongestExtensionNameStrength = strongestExtensionStrength
            }
        }
    }
    return strongestExtensionName
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    return ""
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
    return ""
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    return ""
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    return ""
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    return ""
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    return ""
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    // your code here
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    return ""
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    return ""
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongest = ""
    var strongestStrength = 0.0
    for ext in extensions {
        let strength = Double(ext.uppercased().filter { $0 >= "A" && $0 <= "Z" }.count) - Double(ext.lowercased().filter { $0 >= "a" && $0 <= "z" }.count)
        if strength > strongestStrength {
            strongest = ext
            strongestStrength = strength
        }
    }
    return className + "." + strongest
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongest = ""
    var strongestStrength = 0.0
    for ext in extensions {
        let strength = Double(ext.uppercased().filter { $0 >= "A" && $0 <= "Z" }.count) - Double(ext.lowercased().filter { $0 >= "a" && $0 <= "z" }.count)
        if strength > strongestStrength {
            strongest = ext
            strongestStrength = strength
        }
    }
    return className + "." + strongest
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongest = ""
    var strongestStrength = 0.0
    for extension in extensions {
        let strength = calculateStrength(extension)
        if strength > strongestStrength {
            strongest = extension
            strongestStrength = strength
        }
    }
    return "\(className).\(strongest)"
}

func calculateStrength(_ extension: String) -> Double {
    let upperCase = extension.uppercased().filter { $0.isUppercase }
    let lowerCase = extension.lowercased().filter { $0.isLowercase }
    let strength = Double(upperCase.count) - Double(lowerCase.count)
    return strength
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongest = ""
    var strongestStrength = 0.0
    for extension in extensions {
        let strength = calculateStrength(extension)
        if strength > strongestStrength {
            strongest = extension
            strongestStrength = strength
        }
    }
    return "\(className).\(strongest)"
}

func calculateStrength(_ extension: String) -> Double {
    let upperCase = extension.uppercased().filter { $0.isUppercase }
    let lowerCase = extension.lowercased().filter { $0.isLowercase }
    let strength = Double(upperCase.count) - Double(lowerCase.count)
    return strength
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    // Your code here
    return ""
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    // Your code here
    return ""
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongest = ""
    var strongestStrength = 0.0
    for ext in extensions {
        let strength = ext.strength()
        if strength > strongestStrength {
            strongest = ext
            strongestStrength = strength
        }
    }
    return "\(className).\(strongest)"
}

extension String {
    func strength() -> Double {
        let upper = self.filter { $0.isUppercase }
        let lower = self.filter { $0.isLowercase }
        return Double(upper.count - lower.count)
    }
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongest = ""
    var strongestStrength = 0.0
    for ext in extensions {
        let strength = ext.strength()
        if strength > strongestStrength {
            strongest = ext
            strongestStrength = strength
        }
    }
    return "\(className).\(strongest)"
}

extension String {
    func strength() -> Double {
        let upper = self.filter { $0.isUppercase }
        let lower = self.filter { $0.isLowercase }
        return Double(upper.count - lower.count)
    }
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var maxStrength = 0.0
    var maxStrengthExtension = ""
    for extensionName in extensions {
        let strength = calculateStrength(extensionName)
        if strength > maxStrength {
            maxStrength = strength
            maxStrengthExtension = extensionName
        }
    }
    return "\(className).\(maxStrengthExtension)"
}

func calculateStrength(extensionName: String) -> Double {
    var capitalCount = 0
    var smallCount = 0
    for char in extensionName.characters {
        if char >= "A" && char <= "Z" {
            capitalCount += 1
        } else if char >= "a" && char <= "z" {
            smallCount += 1
        }
    }
    return Double(capitalCount - smallCount)
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var maxStrength = 0.0
    var maxStrengthExtension = ""
    for extensionName in extensions {
        let strength = calculateStrength(extensionName)
        if strength > maxStrength {
            maxStrength = strength
            maxStrengthExtension = extensionName
        }
    }
    return "\(className).\(maxStrengthExtension)"
}

func calculateStrength(extensionName: String) -> Double {
    var capitalCount = 0
    var smallCount = 0
    for char in extensionName.characters {
        if char >= "A" && char <= "Z" {
            capitalCount += 1
        } else if char >= "a" && char <= "z" {
            smallCount += 1
        }
    }
    return Double(capitalCount - smallCount)
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var maxStrength = 0.0
    var maxStrengthExtension = ""
    for extensionName in extensions {
        let strength = calculateStrength(extensionName)
        if strength > maxStrength {
            maxStrength = strength
            maxStrengthExtension = extensionName
        }
    }
    return "\(className).\(maxStrengthExtension)"
}

func calculateStrength(extensionName: String) -> Double {
    var capitalCount = 0
    var smallCount = 0
    for char in extensionName.characters {
        if char.isUppercase {
            capitalCount += 1
        } else {
            smallCount += 1
        }
    }
    return Double(capitalCount) / Double(smallCount)
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var maxStrength = 0.0
    var maxStrengthExtension = ""
    for extensionName in extensions {
        let strength = calculateStrength(extensionName)
        if strength > maxStrength {
            maxStrength = strength
            maxStrengthExtension = extensionName
        }
    }
    return "\(className).\(maxStrengthExtension)"
}

func calculateStrength(extensionName: String) -> Double {
    var capitalCount = 0
    var smallCount = 0
    for char in extensionName.characters {
        if char.isUppercase {
            capitalCount += 1
        } else {
            smallCount += 1
        }
    }
    return Double(capitalCount) / Double(smallCount)
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var maxStrength = 0.0
    var maxStrengthExtension = ""
    for extensionName in extensions {
        let strength = calculateStrength(extensionName)
        if strength > maxStrength {
            maxStrength = strength
            maxStrengthExtension = extensionName
        }
    }
    return "\(className).\(maxStrengthExtension)"
}

func calculateStrength(_ extensionName: String) -> Double {
    var capitalCount = 0
    var smallCount = 0
    for char in extensionName {
        if char.isUppercase {
            capitalCount += 1
        } else {
            smallCount += 1
        }
    }
    return Double(capitalCount - smallCount)
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var maxStrength = 0.0
    var maxStrengthExtension = ""
    for extensionName in extensions {
        let strength = calculateStrength(extensionName)
        if strength > maxStrength {
            maxStrength = strength
            maxStrengthExtension = extensionName
        }
    }
    return "\(className).\(maxStrengthExtension)"
}

func calculateStrength(_ extensionName: String) -> Double {
    var capitalCount = 0
    var smallCount = 0
    for char in extensionName {
        if char.isUppercase {
            capitalCount += 1
        } else {
            smallCount += 1
        }
    }
    return Double(capitalCount - smallCount)
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var maxStrength = 0.0
    var maxStrengthExtension = ""
    for extensionName in extensions {
        let strength = calculateStrength(extensionName)
        if strength > maxStrength {
            maxStrength = strength
            maxStrengthExtension = extensionName
        }
    }
    return "\(className.lowercased()).\(maxStrengthExtension.lowercased())"
}

func calculateStrength(_ extensionName: String) -> Double {
    let uppercaseLetters = extensionName.filter { $0.isUppercase }
    let lowercaseLetters = extensionName.filter { $0.isLowercase }
    return Double(uppercaseLetters.count) - Double(lowercaseLetters.count)
}

extension Character {
    var isUppercase: Bool {
        return String(self).uppercased() == String(self)
    }

    var isLowercase: Bool {
        return String(self).lowercased() == String(self)
    }
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var maxStrength = 0.0
    var maxStrengthExtension = ""
    for extensionName in extensions {
        let strength = calculateStrength(extensionName)
        if strength > maxStrength {
            maxStrength = strength
            maxStrengthExtension = extensionName
        }
    }
    return "\(className.lowercased()).\(maxStrengthExtension.lowercased())"
}

func calculateStrength(_ extensionName: String) -> Double {
    let uppercaseLetters = extensionName.filter { $0.isUppercase }
    let lowercaseLetters = extensionName.filter { $0.isLowercase }
    return Double(uppercaseLetters.count) - Double(lowercaseLetters.count)
}

extension Character {
    var isUppercase: Bool {
        return String(self).uppercased() == String(self)
    }

    var isLowercase: Bool {
        return String(self).lowercased() == String(self)
    }
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongest = ""
    var strength = 0.0
    for ext in extensions {
        let cap = Double(ext.filter { $0.isUppercase }.count)
        let sm = Double(ext.filter { $0.isLowercase }.count)
        let newStrength = cap - sm
        if newStrength > strength {
            strength = newStrength
            strongest = ext
        }
    }
    return "\(className).\(strongest)"
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongest = ""
    var strength = 0.0
    for ext in extensions {
        let cap = Double(ext.filter { $0.isUppercase }.count)
        let sm = Double(ext.filter { $0.isLowercase }.count)
        let newStrength = cap - sm
        if newStrength > strength {
            strength = newStrength
            strongest = ext
        }
    }
    return "\(className).\(strongest)"
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var maxStrength = 0.0
    var maxStrengthExtension = ""
    for extensionName in extensions {
        let strength = calculateStrength(extensionName)
        if strength > maxStrength {
            maxStrength = strength
            maxStrengthExtension = extensionName
        }
    }
    return className.lowercased() + "." + maxStrengthExtension
}

func calculateStrength(_ extensionName: String) -> Double {
    let uppercaseLetters = extensionName.filter { $0.isUppercase }
    let lowercaseLetters = extensionName.filter { $0.isLowercase }
    return Double(uppercaseLetters.count - lowercaseLetters.count)
}

extension Character {
    var isUppercase: Bool {
        return String(self).rangeOfCharacter(from:.uppercaseLetters)!= nil
    }
    var isLowercase: Bool {
        return String(self).rangeOfCharacter(from:.lowercaseLetters)!= nil
    }
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var maxStrength = 0.0
    var maxStrengthExtension = ""
    for extensionName in extensions {
        let strength = calculateStrength(extensionName)
        if strength > maxStrength {
            maxStrength = strength
            maxStrengthExtension = extensionName
        }
    }
    return className.lowercased() + "." + maxStrengthExtension
}

func calculateStrength(_ extensionName: String) -> Double {
    let uppercaseLetters = extensionName.filter { $0.isUppercase }
    let lowercaseLetters = extensionName.filter { $0.isLowercase }
    return Double(uppercaseLetters.count - lowercaseLetters.count)
}

extension Character {
    var isUppercase: Bool {
        return String(self).rangeOfCharacter(from:.uppercaseLetters)!= nil
    }
    var isLowercase: Bool {
        return String(self).rangeOfCharacter(from:.lowercaseLetters)!= nil
    }
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongest = ""
    var strength = 0.0
    for ext in extensions {
        let cap = Double(ext.filter { $0.isUppercase }.count)
        let sm = Double(ext.filter { $0.isLowercase }.count)
        let extStrength = cap - sm
        if extStrength > strength {
            strongest = ext
            strength = extStrength
        }
    }
    return "\(className.lowercased()).\(strongest)"
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongest = ""
    var strength = 0.0
    for ext in extensions {
        let cap = Double(ext.filter { $0.isUppercase }.count)
        let sm = Double(ext.filter { $0.isLowercase }.count)
        let extStrength = cap - sm
        if extStrength > strength {
            strongest = ext
            strength = extStrength
        }
    }
    return "\(className.lowercased()).\(strongest)"
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var maxStrength = 0.0
    var maxStrengthExtension = ""
    for extensionName in extensions {
        let strength = calculateStrength(extensionName)
        if strength > maxStrength {
            maxStrength = strength
            maxStrengthExtension = extensionName
        }
    }
    return "\(className.lowercaseString).\(maxStrengthExtension)"
}

func calculateStrength(extensionName: String) -> Double {
    var capitalCount = 0
    var smallCount = 0
    for character in extensionName.characters {
        if character.isUppercase {
            capitalCount += 1
        } else {
            smallCount += 1
        }
    }
    return Double(capitalCount - smallCount)
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var maxStrength = 0.0
    var maxStrengthExtension = ""
    for extensionName in extensions {
        let strength = calculateStrength(extensionName)
        if strength > maxStrength {
            maxStrength = strength
            maxStrengthExtension = extensionName
        }
    }
    return "\(className.lowercaseString).\(maxStrengthExtension)"
}

func calculateStrength(extensionName: String) -> Double {
    var capitalCount = 0
    var smallCount = 0
    for character in extensionName.characters {
        if character.isUppercase {
            capitalCount += 1
        } else {
            smallCount += 1
        }
    }
    return Double(capitalCount - smallCount)
}
```

func Strongest_Extension(className: String, extensions: [String]) -> String {
    var max = 0
    var maxIndex = 0
    for i in 0..<extensions.count {
        let str = extensions[i]
        var cap = 0
        var sm = 0
        for j in 0..<str.count {
            let c = str[str.index(str.startIndex, offsetBy: j)]
            if c >= "A" && c <= "Z" {
                cap += 1
            } else if c >= "a" && c <= "z" {
                sm += 1
            }
        }
        let strength = cap - sm
        if strength > max {
            max = strength
            maxIndex = i
        }
    }
    return className.lowercased() + "." + extensions[maxIndex]
}

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var max = 0
    var maxIndex = 0
    for i in 0..<extensions.count {
        let str = extensions[i]
        var cap = 0
        var sm = 0
        for j in 0..<str.count {
            let c = str[str.index(str.startIndex, offsetBy: j)]
            if c >= "A" && c <= "Z" {
                cap += 1
            } else if c >= "a" && c <= "z" {
                sm += 1
            }
        }
        let strength = cap - sm
        if strength > max {
            max = strength
            maxIndex = i
        }
    }
    return className.lowercased() + "." + extensions[maxIndex]
}
```

```swift
// You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letters 
// in the extension's name, the strength is given by the fraction CAP - SM. 
// You should find the strongest extension and return a string in this 
// format: ClassName.StrongestExtensionName.
// If there are two or more extensions with the same strength, you should
// choose the one that comes first in the array.
// For example, if you are given "Slices" as the class and an array of the
// extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
// return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
// (its strength is -1).
// Example:
// Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var maxStrength = -1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: String = ""
    var maxStrength: Double = 0
    
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = Double(extensionName.count - extensionName.countOf(where: { $0.isUppercase }))
        
        if extensionStrength > maxStrength {
            maxStrength = extensionStrength
            strongestExtension = extension
        }
    }
    
    return "\(className.replacingOccurrences(of: " ", with: "_")).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: String = ""
    var maxStrength: Double = 0
    
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = Double(extensionName.count - extensionName.countOf(where: { $0.isUppercase }))
        
        if extensionStrength > maxStrength {
            maxStrength = extensionStrength
            strongestExtension = extension
        }
    }
    
    return "\(className.replacingOccurrences(of: " ", with: "_")).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = 0
    
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = extensionName.count - extensionName.lowercased().count
        
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return className + "." + strongestExtension
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = 0
    
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = extensionName.count - extensionName.lowercased().count
        
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return className + "." + strongestExtension
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = 0
    
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = extensionName.uppercased().count - extensionName.lowercased().count
        if extensionStrength > maxStrength {
            strongestExtension = extension
            maxStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = 0
    
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = extensionName.uppercased().count - extensionName.lowercased().count
        if extensionStrength > maxStrength {
            strongestExtension = extension
            maxStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = 0
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = extensionName.count - extensionName.lowercased().count
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    return "\(className)_\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = 0
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = extensionName.count - extensionName.lowercased().count
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    return "\(className)_\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = 0
    
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = extensionName.count - extensionName.lowercased().count
        if extensionStrength > maxStrength {
            strongestExtension = extension
            maxStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = 0
    
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = extensionName.count - extensionName.lowercased().count
        if extensionStrength > maxStrength {
            strongestExtension = extension
            maxStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = 0
    
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = extensionName.count - extensionName.lowercased().count
        if extensionStrength > maxStrength {
            maxStrength = extensionStrength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = 0
    
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = extensionName.count - extensionName.lowercased().count
        if extensionStrength > maxStrength {
            maxStrength = extensionStrength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = 0
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = extensionName.count - extensionName.lowercased().count
        if extensionStrength > maxStrength {
            maxStrength = extensionStrength
            strongestExtension = extension
        }
    }
    return "\(className)_\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = 0
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = extensionName.count - extensionName.lowercased().count
        if extensionStrength > maxStrength {
            maxStrength = extensionStrength
            strongestExtension = extension
        }
    }
    return "\(className)_\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = 0
    
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = extensionName.count - extensionName.lowercased().count
        
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return className + "." + strongestExtension
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = 0
    
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = extensionName.count - extensionName.lowercased().count
        
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return className + "." + strongestExtension
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = 0
    
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = extensionName.count - extensionName.lowercased().count
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className)_\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = 0
    
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = extensionName.count - extensionName.lowercased().count
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className)_\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = 0
    
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = extensionName.count - extensionName.lowercased().count
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className)_\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength = 0
    
    for extension in extensions {
        let extensionName = extension.replacingOccurrences(of: " ", with: "_")
        let extensionStrength = extensionName.count - extensionName.lowercased().count
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className)_\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = -1
    
    for extension in extensions {
        let capCount = extension.filter { $0.isUppercase }.count
        let smCount = extension.filter { $0.isLowercase }.count
        let strength = capCount - smCount
        
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = -1
    
    for extension in extensions {
        let capCount = extension.filter { $0.isUppercase }.count
        let smCount = extension.filter { $0.isLowercase }.count
        let strength = capCount - smCount
        
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = -1
    
    for extension in extensions {
        let capCount = extension.filter { $0.isUppercase }.count
        let smCount = extension.filter { $0.isLowercase }.count
        let strength = capCount - smCount
        
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = -1
    
    for extension in extensions {
        let capCount = extension.filter { $0.isUppercase }.count
        let smCount = extension.filter { $0.isLowercase }.count
        let strength = capCount - smCount
        
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = Double.lowest
    for extension in extensions {
        let capCount = extension.filter { $0.isUppercase }.count
        let smCount = extension.filter { $0.isLowercase }.count
        let strength = Double(capCount) - Double(smCount)
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    return "\(className).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = Double.lowest
    for extension in extensions {
        let capCount = extension.filter { $0.isUppercase }.count
        let smCount = extension.filter { $0.isLowercase }.count
        let strength = Double(capCount) - Double(smCount)
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = -1
    
    for extension in extensions {
        let capCount = extension.filter { $0.isUppercase }.count
        let smCount = extension.filter { $0.isLowercase }.count
        let strength = capCount - smCount
        
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = -1
    
    for extension in extensions {
        let capCount = extension.filter { $0.isUppercase }.count
        let smCount = extension.filter { $0.isLowercase }.count
        let strength = capCount - smCount
        
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = Double.leastNormalMagnitude
    
    for extension in extensions {
        let capCount = extension.filter { $0.isUppercase }.count
        let smCount = extension.filter { $0.isLowercase }.count
        let strength = Double(capCount) - Double(smCount)
        
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = Double.leastNormalMagnitude
    
    for extension in extensions {
        let capCount = extension.filter { $0.isUppercase }.count
        let smCount = extension.filter { $0.isLowercase }.count
        let strength = Double(capCount) - Double(smCount)
        
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = Double.lowest
    for extension in extensions {
        let cap = extension.filter { $0.isUppercase }.count
        let sm = extension.filter { $0.isLowercase }.count
        let strength = Double(cap) - Double(sm)
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    return "\(className).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = Double.lowest
    for extension in extensions {
        let cap = extension.filter { $0.isUppercase }.count
        let sm = extension.filter { $0.isLowercase }.count
        let strength = Double(cap) - Double(sm)
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = -1
    
    for extension in extensions {
        let capCount = extension.filter { $0.isUppercase }.count
        let smCount = extension.filter { $0.isLowercase }.count
        let strength = capCount - smCount
        
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = -1
    
    for extension in extensions {
        let capCount = extension.filter { $0.isUppercase }.count
        let smCount = extension.filter { $0.isLowercase }.count
        let strength = capCount - smCount
        
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = Double.lowest
    for extension in extensions {
        let capCount = extension.filter { $0.isUppercase }.count
        let smCount = extension.filter { $0.isLowercase }.count
        let strength = Double(capCount) - Double(smCount)
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    return "\(className).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = Double.lowest
    for extension in extensions {
        let capCount = extension.filter { $0.isUppercase }.count
        let smCount = extension.filter { $0.isLowercase }.count
        let strength = Double(capCount) - Double(smCount)
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = Double.leastNormalMagnitude
    
    for extension in extensions {
        let capCount = extension.filter { $0.isUppercase }.count
        let smCount = extension.filter { $0.isLowercase }.count
        let strength = Double(capCount) - Double(smCount)
        
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = Double.leastNormalMagnitude
    
    for extension in extensions {
        let capCount = extension.filter { $0.isUppercase }.count
        let smCount = extension.filter { $0.isLowercase }.count
        let strength = Double(capCount) - Double(smCount)
        
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = 0.0
    
    for extension in extensions {
        let capCount = extension.filter { $0.isUppercase }.count
        let smCount = extension.filter { $0.isLowercase }.count
        let strength = Double(capCount) - Double(smCount)
        
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var maxStrength = 0.0
    
    for extension in extensions {
        let capCount = extension.filter { $0.isUppercase }.count
        let smCount = extension.filter { $0.isLowercase }.count
        let strength = Double(capCount) - Double(smCount)
        
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = (extension: "", strength: 0)
    
    for extension in extensions {
        let cap = extension.filter { $0.isUppercase }.count
        let sm = extension.filter { $0.isLowercase }.count
        let strength = cap - sm
        
        if strength > strongestExtension.strength {
            strongestExtension = (extension, strength)
        } else if strength == strongestExtension.strength && extension < strongestExtension.extension {
            strongestExtension = (extension, strength)
        }
    }
    
    return "\(className).\(strongestExtension.extension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = (extension: "", strength: 0)
    
    for extension in extensions {
        let cap = extension.filter { $0.isUppercase }.count
        let sm = extension.filter { $0.isLowercase }.count
        let strength = cap - sm
        
        if strength > strongestExtension.strength {
            strongestExtension = (extension, strength)
        } else if strength == strongestExtension.strength && extension < strongestExtension.extension {
            strongestExtension = (extension, strength)
        }
    }
    
    return "\(className).\(strongestExtension.extension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: String?
    var strongestStrength = -Double.greatestFiniteMagnitude
    
    for extension in extensions {
        let strength = Double(extension.filter({$0.isUppercase}).count) - Double(extension.filter({$0.isLowercase}).count)
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension!)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: String?
    var strongestStrength = -Double.greatestFiniteMagnitude
    
    for extension in extensions {
        let strength = Double(extension.filter({$0.isUppercase}).count) - Double(extension.filter({$0.isLowercase}).count)
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension!)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: (name: String, strength: Double)?
    for extension in extensions {
        let cap = extension.filter { $0.isUppercase }.count
        let sm = extension.filter { $0.isLowercase }.count
        let strength = Double(cap - sm)
        if strongestExtension == nil || strength > strongestExtension!.strength {
            strongestExtension = (name: extension, strength: strength)
        }
    }
    return "\(className).\(strongestExtension!.name)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: (name: String, strength: Double)?
    for extension in extensions {
        let cap = extension.filter { $0.isUppercase }.count
        let sm = extension.filter { $0.isLowercase }.count
        let strength = Double(cap - sm)
        if strongestExtension == nil || strength > strongestExtension!.strength {
            strongestExtension = (name: extension, strength: strength)
        }
    }
    return "\(className).\(strongestExtension!.name)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: String?
    var strongestStrength = -Double.greatestFiniteMagnitude
    
    for extension in extensions {
        let strength = Double(extension.filter({$0.isUppercase}).count) - Double(extension.filter({$0.isLowercase}).count)
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension!)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: String?
    var strongestStrength = -Double.greatestFiniteMagnitude
    
    for extension in extensions {
        let strength = Double(extension.filter({$0.isUppercase}).count) - Double(extension.filter({$0.isLowercase}).count)
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension!)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: (name: String, strength: Double) = ("", -Double.infinity)
    
    for extension in extensions {
        let cap = extension.filter { $0.isUppercase }.count
        let sm = extension.filter { $0.isLowercase }.count
        let strength = Double(cap) - Double(sm)
        
        if strength > strongestExtension.strength {
            strongestExtension = (extension, strength)
        }
    }
    
    return "\(className).\(strongestExtension.name)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: (name: String, strength: Double) = ("", -Double.infinity)
    
    for extension in extensions {
        let cap = extension.filter { $0.isUppercase }.count
        let sm = extension.filter { $0.isLowercase }.count
        let strength = Double(cap) - Double(sm)
        
        if strength > strongestExtension.strength {
            strongestExtension = (extension, strength)
        }
    }
    
    return "\(className).\(strongestExtension.name)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: String?
    var strongestStrength = -Double.greatestFiniteMagnitude
    
    for extension in extensions {
        let strength = Double(extension.filter({$0.isUppercase}).count) - Double(extension.filter({$0.isLowercase}).count)
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension!)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: String?
    var strongestStrength = -Double.greatestFiniteMagnitude
    
    for extension in extensions {
        let strength = Double(extension.filter({$0.isUppercase}).count) - Double(extension.filter({$0.isLowercase}).count)
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension!)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: String?
    var strongestStrength = -Double.infinity
    
    for extension in extensions {
        let strength = Double(extension.filter({$0.isUpper}).count) - Double(extension.filter({$0.isLower}).count)
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension!)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: String?
    var strongestStrength = -Double.infinity
    
    for extension in extensions {
        let strength = Double(extension.filter({$0.isUpper}).count) - Double(extension.filter({$0.isLower}).count)
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension!)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: String?
    var strongestStrength = -Double.infinity
    
    for extension in extensions {
        let strength = Double(extension.filter({$0.isUpper}).count) - Double(extension.filter({$0.isLower}).count)
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension!)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: String?
    var strongestStrength = -Double.infinity
    
    for extension in extensions {
        let strength = Double(extension.filter({$0.isUpper}).count) - Double(extension.filter({$0.isLower}).count)
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension!)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: String?
    var strongestStrength = -Double.greatestFiniteMagnitude
    
    for extension in extensions {
        let cap = extension.filter { $0.isUppercase }.count
        let sm = extension.filter { $0.isLowercase }.count
        let strength = Double(cap - sm)
        
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension!)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension: String?
    var strongestStrength = -Double.greatestFiniteMagnitude
    
    for extension in extensions {
        let cap = extension.filter { $0.isUppercase }.count
        let sm = extension.filter { $0.isLowercase }.count
        let strength = Double(cap - sm)
        
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension!)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = (name: "", strength: 0)
    
    for extension in extensions {
        let cap = extension.filter { $0.isUppercase }.count
        let sm = extension.filter { $0.isLowercase }.count
        let strength = cap - sm
        
        if strength > strongestExtension.strength {
            strongestExtension = (name: extension, strength: strength)
        } else if strength == strongestExtension.strength && extension < strongestExtension.name {
            strongestExtension = (name: extension, strength: strength)
        }
    }
    
    return "\(className).\(strongestExtension.name)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = (name: "", strength: 0)
    
    for extension in extensions {
        let cap = extension.filter { $0.isUppercase }.count
        let sm = extension.filter { $0.isLowercase }.count
        let strength = cap - sm
        
        if strength > strongestExtension.strength {
            strongestExtension = (name: extension, strength: strength)
        } else if strength == strongestExtension.strength && extension < strongestExtension.name {
            strongestExtension = (name: extension, strength: strength)
        }
    }
    
    return "\(className).\(strongestExtension.name)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.sorted { extension1, extension2 in
        let strength1 = extension1.filter { "ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains($0) }.count - extension1.filter { "abcdefghijklmnopqrstuvwxyz".contains($0) }.count
        let strength2 = extension2.filter { "ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains($0) }.count - extension2.filter { "abcdefghijklmnopqrstuvwxyz".contains($0) }.count
        if strength1 == strength2 {
            return extension1 < extension2
        }
        return strength1 > strength2
    }.first!
    return "\(className.capitalized).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.sorted { extension1, extension2 in
        let strength1 = extension1.filter { "ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains($0) }.count - extension1.filter { "abcdefghijklmnopqrstuvwxyz".contains($0) }.count
        let strength2 = extension2.filter { "ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains($0) }.count - extension2.filter { "abcdefghijklmnopqrstuvwxyz".contains($0) }.count
        if strength1 == strength2 {
            return extension1 < extension2
        }
        return strength1 > strength2
    }.first!
    return "\(className.capitalized).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.reduce(nil) { (strongest, extension) in
        let strength = extension.reduce(0) { (result, character) in
            let isUppercase = character.isUppercase
            return result + (isUppercase? 1 : -1)
        }
        if let strongest = strongest, strongest.1 == strength {
            return strongest
        }
        return (extension, strength)
    }
    return "\(className).\(strongestExtension!.0)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.reduce(nil) { (strongest, extension) in
        let strength = extension.reduce(0) { (result, character) in
            let isUppercase = character.isUppercase
            return result + (isUppercase? 1 : -1)
        }
        if let strongest = strongest, strongest.1 == strength {
            return strongest
        }
        return (extension, strength)
    }
    return "\(className).\(strongestExtension!.0)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.sorted { extension1, extension2 in
        let strength1 = extension1.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension1.filter("abcdefghijklmnopqrstuvwxyz".contains).count
        let strength2 = extension2.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension2.filter("abcdefghijkluvwxyz".contains).count
        if strength1 == strength2 {
            return extension1 < extension2
        }
        return strength1 > strength2
    }.first!
    return "\(className.capitalized).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.sorted { extension1, extension2 in
        let strength1 = extension1.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension1.filter("abcdefghijklmnopqrstuvwxyz".contains).count
        let strength2 = extension2.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension2.filter("abcdefghijkluvwxyz".contains).count
        if strength1 == strength2 {
            return extension1 < extension2
        }
        return strength1 > strength2
    }.first!
    return "\(className.capitalized).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.reduce(nil) { (result, extensionName) in
        let strength = extensionName.reduce(0) { (result, character) in
            if character.isUppercase {
                return result + 1
            } else if character.isLowercase {
                return result - 1
            } else {
                return result
            }
        }
        if let result = result, result.1 >= strength {
            return result
        } else {
            return (extensionName, strength)
        }
    }
    return "\(className).\(strongestExtension!.0)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.reduce(nil) { (result, extensionName) in
        let strength = extensionName.reduce(0) { (result, character) in
            if character.isUppercase {
                return result + 1
            } else if character.isLowercase {
                return result - 1
            } else {
                return result
            }
        }
        if let result = result, result.1 >= strength {
            return result
        } else {
            return (extensionName, strength)
        }
    }
    return "\(className).\(strongestExtension!.0)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.reduce(nil) { (strongest, extension) in
        let strength = extension.reduce(0) { (result, character) in
            if character.isUppercase {
                return result + 1
            } else if character.isLowercase {
                return result - 1
            } else {
                return result
            }
        }
        if let strongest = strongest, strength >= strongest.strength {
            return strongest
        } else {
            return ExtensionStrength(name: extension, strength: strength)
        }
    }
    return "\(className).\(strongestExtension!.name)"
}

struct ExtensionStrength {
    let name: String
    let strength: Int
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.reduce(nil) { (strongest, extension) in
        let strength = extension.reduce(0) { (result, character) in
            if character.isUppercase {
                return result + 1
            } else if character.isLowercase {
                return result - 1
            } else {
                return result
            }
        }
        if let strongest = strongest, strength >= strongest.strength {
            return strongest
        } else {
            return ExtensionStrength(name: extension, strength: strength)
        }
    }
    return "\(className).\(strongestExtension!.name)"
}

struct ExtensionStrength {
    let name: String
    let strength: Int
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.sorted { extension1, extension2 in
        let strength1 = extension1.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension1.filter("abcdefghijklmnopqrstuvwxyz".contains).count
        let strength2 = extension2.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension2.filter("abcdefghijkluvwxyz".contains).count
        if strength1 == strength2 {
            return extension1 < extension2
        }
        return strength1 > strength2
    }.first!
    return "\(className.capitalized).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.sorted { extension1, extension2 in
        let strength1 = extension1.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension1.filter("abcdefghijklmnopqrstuvwxyz".contains).count
        let strength2 = extension2.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension2.filter("abcdefghijkluvwxyz".contains).count
        if strength1 == strength2 {
            return extension1 < extension2
        }
        return strength1 > strength2
    }.first!
    return "\(className.capitalized).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.sorted { extension1, extension2 in
        let strength1 = extension1.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension1.filter("abcdefghijklmnopqrstuvwxyz".contains).count
        let strength2 = extension2.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension2.filter("abcdefghijkluvwxyz".contains).count
        if strength1 == strength2 {
            return extension1 < extension2
        }
        return strength1 > strength2
    }.first!
    return "\(className.capitalized).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.sorted { extension1, extension2 in
        let strength1 = extension1.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension1.filter("abcdefghijklmnopqrstuvwxyz".contains).count
        let strength2 = extension2.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension2.filter("abcdefghijkluvwxyz".contains).count
        if strength1 == strength2 {
            return extension1 < extension2
        }
        return strength1 > strength2
    }.first!
    return "\(className.capitalized).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.sorted { extension1, extension2 in
        let strength1 = extension1.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension1.filter("abcdefghijklmnopqrstuvwxyz".contains).count
        let strength2 = extension2.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension2.filter("abcdefghijkluvwxyz".contains).count
        return strength1 > strength2 || (strength1 == strength2 && extension1 < extension2)
    }.first!
    return "\(className.capitalized).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.sorted { extension1, extension2 in
        let strength1 = extension1.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension1.filter("abcdefghijklmnopqrstuvwxyz".contains).count
        let strength2 = extension2.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension2.filter("abcdefghijkluvwxyz".contains).count
        return strength1 > strength2 || (strength1 == strength2 && extension1 < extension2)
    }.first!
    return "\(className.capitalized).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.sorted { extension1, extension2 in
        let strength1 = extension1.filter { $0.isUppercase }.count - extension1.filter { $0.isLowercase }.count
        let strength2 = extension2.filter { $0.isUppercase }.count - extension2.filter { $0.isLowercase }.count
        if strength1 == strength2 {
            return extension1 < extension2
        }
        return strength1 > strength2
    }.first!
    return "\(className).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.sorted { extension1, extension2 in
        let strength1 = extension1.filter { $0.isUppercase }.count - extension1.filter { $0.isLowercase }.count
        let strength2 = extension2.filter { $0.isUppercase }.count - extension2.filter { $0.isLowercase }.count
        if strength1 == strength2 {
            return extension1 < extension2
        }
        return strength1 > strength2
    }.first!
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.sorted { extension1, extension2 in
        let strength1 = extension1.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension1.filter("abcdefghijklmnopqrstuvwxyz".contains).count
        let strength2 = extension2.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension2.filter("abcdefghijkluvwxyz".contains).count
        if strength1 == strength2 {
            return extension1 < extension2
        }
        return strength1 > strength2
    }.first!
    return "\(className.capitalized).\(strongestExtension)"
}

Question:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"

Answer:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let className = className.lowercased()
    let strongestExtension = extensions.sorted { extension1, extension2 in
        let strength1 = extension1.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension1.filter("abcdefghijklmnopqrstuvwxyz".contains).count
        let strength2 = extension2.filter("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains).count - extension2.filter("abcdefghijkluvwxyz".contains).count
        if strength1 == strength2 {
            return extension1 < extension2
        }
        return strength1 > strength2
    }.first!
    return "\(className.capitalized).\(strongestExtension)"
}
```

import Foundation

func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

```swift
import Foundation

/* 
 Function to multiply two matrices represented as 2D arrays of Doubles.
 Returns a new matrix that is the product of `lhs` and `rhs`, or `nil` if the matrices cannot be multiplied.
 */
func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

/*
 You will be given the name of a class (a string) and an array of extensions.
 The extensions are to be used to load additional classes to the class. The
 strength of the extension is as follows: Let CAP be the number of the uppercase
 letters in the extension's name, and let SM be the number of lowercase letters 
 in the extension's name, the strength is given by the fraction CAP - SM. 
 You should find the strongest extension and return a string in this 
 format: ClassName.StrongestExtensionName.
 If there are two or more extensions with the same strength, you should
 choose the one that comes first in the array.
 For example, if you are given "Slices" as the class and an array of the
 extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
 return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
 (its strength is -1).
 Example:
 Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
 */
func Strongest_Extension(className: String, extensions: [String]) -> String {
    
    
    
    

import Foundation

func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

```swift
import Foundation

/* 
 Function to multiply two matrices represented as 2D arrays of Doubles.
 Returns a new matrix that is the product of `lhs` and `rhs`, or `nil` if the matrices cannot be multiplied.
 */
func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

/*
 You will be given the name of a class (a string) and an array of extensions.
 The extensions are to be used to load additional classes to the class. The
 strength of the extension is as follows: Let CAP be the number of the uppercase
 letters in the extension's name, and let SM be the number of lowercase letters 
 in the extension's name, the strength is given by the fraction CAP - SM. 
 You should find the strongest extension and return a string in this 
 format: ClassName.StrongestExtensionName.
 If there are two or more extensions with the same strength, you should
 choose the one that comes first in the array.
 For example, if you are given "Slices" as the class and an array of the
 extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
 return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
 (its strength is -1).
 Example:
 Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
 */
func Strongest_Extension(className: String, extensions: [String]) -> String {
    
    
    
    
    

import Foundation

func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

```swift
import Foundation

/* 
 Function to multiply two matrices represented as 2D arrays of Doubles.
 Returns a new matrix that is the product of `lhs` and `rhs`, or `nil` if the matrices cannot be multiplied.
 */
func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

/*
 You will be given the name of a class (a string) and an array of extensions.
 The extensions are to be used to load additional classes to the class. The
 strength of the extension is as follows: Let CAP be the number of the uppercase
 letters in the extension's name, and let SM be the number of lowercase letters 
 in the extension's name, the strength is given by the fraction CAP - SM. 
 You should find the strongest extension and return a string in this 
 format: ClassName.StrongestExtensionName.
 If there are two or more extensions with the same strength, you should
 choose the one that comes first in the array.
 For example, if you are given "Slices" as the class and an array of the
 extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
 return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
 (its strength is -1).
 Example:
 Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
 */
func Strongest_Extension(className: String, extensions: [String]) -> String {
    
    
    
    
    
    
    
    
    
    
    
    

import Foundation

func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

```swift
import Foundation

/* 
 Function to multiply two matrices represented as 2D arrays of Doubles.
 Returns a new matrix that is the product of `lhs` and `rhs`, or `nil` if the matrices cannot be multiplied.
 */
func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

/*
 You will be given the name of a class (a string) and an array of extensions.
 The extensions are to be used to load additional classes to the class. The
 strength of the extension is as follows: Let CAP be the number of the uppercase
 letters in the extension's name, and let SM be the number of lowercase letters 
 in the extension's name, the strength is given by the fraction CAP - SM. 
 You should find the strongest extension and return a string in this 
 format: ClassName.StrongestExtensionName.
 If there are two or more extensions with the same strength, you should
 choose the one that comes first in the array.
 For example, if you are given "Slices" as the class and an array of the
 extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
 return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
 (its strength is -1).
 Example:
 Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
 */
func Strongest_Extension(className: String, extensions: [String]) -> String {
    
    
    

import Foundation

func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

```swift
import Foundation

/* 
 Function to multiply two matrices represented as 2D arrays of Doubles.
 Returns a new matrix that is the product of `lhs` and `rhs`, or `nil` if the matrices cannot be multiplied.
 */
func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

/*
 You will be given the name of a class (a string) and an array of extensions.
 The extensions are to be used to load additional classes to the class. The
 strength of the extension is as follows: Let CAP be the number of the uppercase
 letters in the extension's name, and let SM be the number of lowercase letters 
 in the extension's name, the strength is given by the fraction CAP - SM. 
 You should find the strongest extension and return a string in this 
 format: ClassName.StrongestExtensionName.
 If there are two or more extensions with the same strength, you should
 choose the one that comes first in the array.
 For example, if you are given "Slices" as the class and an array of the
 extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
 return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
 (its strength is -1).
 Example:
 Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
 */
func Strongest_Extension(className: String, extensions: [String]) -> String {
    
    

import Foundation

func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

```swift
import Foundation

/* 
 Function to multiply two matrices represented as 2D arrays of Doubles.
 Returns a new matrix that is the product of `lhs` and `rhs`, or `nil` if the matrices cannot be multiplied.
 */
func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

/*
 You will be given the name of a class (a string) and an array of extensions.
 The extensions are to be used to load additional classes to the class. The
 strength of the extension is as follows: Let CAP be the number of the uppercase
 letters in the extension's name, and let SM be the number of lowercase letters 
 in the extension's name, the strength is given by the fraction CAP - SM. 
 You should find the strongest extension and return a string in this 
 format: ClassName.StrongestExtensionName.
 If there are two or more extensions with the same strength, you should
 choose the one that comes first in the array.
 For example, if you are given "Slices" as the class and an array of the
 extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
 return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
 (its strength is -1).
 Example:
 Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
 */
func Strongest_Extension(className: String, extensions: [String]) -> String {
    
    

import Foundation

func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

```swift
import Foundation

/* 
 Function to multiply two matrices represented as 2D arrays of Doubles.
 Returns a new matrix that is the product of `lhs` and `rhs`, or `nil` if the matrices cannot be multiplied.
 */
func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

/*
 You will be given the name of a class (a string) and an array of extensions.
 The extensions are to be used to load additional classes to the class. The
 strength of the extension is as follows: Let CAP be the number of the uppercase
 letters in the extension's name, and let SM be the number of lowercase letters 
 in the extension's name, the strength is given by the fraction CAP - SM. 
 You should find the strongest extension and return a string in this 
 format: ClassName.StrongestExtensionName.
 If there are two or more extensions with the same strength, you should
 choose the one that comes first in the array.
 For example, if you are given "Slices" as the class and an array of the
 extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
 return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
 (its strength is -1).
 Example:
 Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
 */
func Strongest_Extension(className: String, extensions: [String]) -> String {
    
    
    

import Foundation

func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

```swift
import Foundation

/* 
 Function to multiply two matrices represented as 2D arrays of Doubles.
 Returns a new matrix that is the product of `lhs` and `rhs`, or `nil` if the matrices cannot be multiplied.
 */
func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

/*
 You will be given the name of a class (a string) and an array of extensions.
 The extensions are to be used to load additional classes to the class. The
 strength of the extension is as follows: Let CAP be the number of the uppercase
 letters in the extension's name, and let SM be the number of lowercase letters 
 in the extension's name, the strength is given by the fraction CAP - SM. 
 You should find the strongest extension and return a string in this 
 format: ClassName.StrongestExtensionName.
 If there are two or more extensions with the same strength, you should
 choose the one that comes first in the array.
 For example, if you are given "Slices" as the class and an array of the
 extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
 return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
 (its strength is -1).
 Example:
 Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
 */
func Strongest_Extension(className: String, extensions: [String]) -> String {
    
    
    
    

import Foundation

func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

```swift
import Foundation

/* 
 Function to multiply two matrices represented as 2D arrays of Doubles.
 Returns a new matrix that is the product of `lhs` and `rhs`, or `nil` if the matrices cannot be multiplied.
 */
func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

/*
 You will be given the name of a class (a string) and an array of extensions.
 The extensions are to be used to load additional classes to the class. The
 strength of the extension is as follows: Let CAP be the number of the uppercase
 letters in the extension's name, and let SM be the number of lowercase letters 
 in the extension's name, the strength is given by the fraction CAP - SM. 
 You should find the strongest extension and return a string in this 
 format: ClassName.StrongestExtensionName.
 If there are two or more extensions with the same strength, you should
 choose the one that comes first in the array.
 For example, if you are given "Slices" as the class and an array of the
 extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
 return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
 (its strength is -1).
 Example:
 Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
 */
func Strongest_Extension(className: String, extensions: [String]) -> String {
    
    
    
    

import Foundation

func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

```swift
import Foundation

/* 
 Function to multiply two matrices represented as 2D arrays of Doubles.
 Returns a new matrix that is the product of `lhs` and `rhs`, or `nil` if the matrices cannot be multiplied.
 */
func multiply(_ lhs: [[Double]], _ rhs: [[Double]]) -> [[Double]]? {
    guard lhs[0].count == rhs.count else { 
        return nil 
    }
    
    var result = [[Double]](repeating: [Double](repeating: 0, count: rhs[0].count), count: lhs.count)
    for i in 0..<lhs.count {
        for j in 0..<rhs[0].count {
            for k in 0..<rhs.count {
                result[i][j] += lhs[i][k] * rhs[k][j]
            }
        }
    }
    
    return result
}

/*
 You will be given the name of a class (a string) and an array of extensions.
 The extensions are to be used to load additional classes to the class. The
 strength of the extension is as follows: Let CAP be the number of the uppercase
 letters in the extension's name, and let SM be the number of lowercase letters 
 in the extension's name, the strength is given by the fraction CAP - SM. 
 You should find the strongest extension and return a string in this 
 format: ClassName.StrongestExtensionName.
 If there are two or more extensions with the same strength, you should
 choose the one that comes first in the array.
 For example, if you are given "Slices" as the class and an array of the
 extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
 return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
 (its strength is -1).
 Example:
 Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
 */
func Strongest_Extension(className: String, extensions: [String]) -> String {
    
    
    
    
    
    

<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<|im_end|>
<|im_start|>assistant
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
in the function
in the function is

<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<|im_end|>
<|im_start|>assistant
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
in the function
in the function is

<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<|im_end|>
<|im_start|>assistant
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
in the function
Here is the function:



```

<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<|im_end|>
<|im_start|>assistant
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
in the function
Here is to calculate

<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<|im_end|>
<|im_start|>assistant
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
in the function
<|padding|>

<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<|im_end|>
<|im_start|>assistant
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
in the function body of the function, only contains the logic to find the function to solve the problem

<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<|im_end|>
<|im_start|>assistant
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
in the function in the function, it's purpose is to find the extension with the strongest extension as follows:

<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<|im_end|>
<|im_start|>assistant
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    let strongestExtension = extensions:

<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<|im_end|>
<|im_start|>assistant
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
in the function's name of the strongestExtension in the extension in the extension in the array is determined by its strength:
    strength(extension
    strength: (Float(extension: Float) -> extension:
{
    let fullName:
    var maxStrength: Float
    var maxStrength: Float {
    var maxStrength: Float {
        var maxStrength

<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"<|im_end|>
<|im_start|>assistant
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
in the function's name of the strongestExtension in the extension in the function calculates the strength(extension:
    
{
    var extensions:
    var

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = calculateStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = calculateStrength(extension: extension)
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func calculateStrength(extension: String) -> Float {
    let uppercaseCount = extension.filter { $0.isUppercase }.count
    let lowercaseCount = extension.filter { $0.isLowercase }.count
    return Float(uppercaseCount) - Float(lowercaseCount)
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = calculateStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = calculateStrength(extension: extension)
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func calculateStrength(extension: String) -> Float {
    let uppercaseCount = extension.filter { $0.isUppercase }.count
    let lowercaseCount = extension.filter { $0.isLowercase }.count
    return Float(uppercaseCount) - Float(lowercaseCount)
}

print(Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"])) // "my_class.AA"
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = calculateStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = calculateStrength(extension: extension)
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func calculateStrength(extension: String) -> Float {
    let uppercaseCount = extension.filter { $0.isUppercase }.count
    let lowercaseCount = extension.filter { $0.isLowercase }.count
    return Float(uppercaseCount) - Float(lowercaseCount)
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = calculateStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = calculateStrength(extension: extension)
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func calculateStrength(extension: String) -> Float {
    let uppercaseCount = extension.filter { $0.isUppercase }.count
    let lowercaseCount = extension.filter { $0.isLowercase }.count
    return Float(uppercaseCount) - Float(lowercaseCount)
}

print(Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"])) // "my_class.AA"
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = getStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = getStrength(extension: extension)
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func getStrength(extension: String) -> Float {
    let uppercaseCount = extension.filter { $0.isUppercase }.count
    let lowercaseCount = extension.filter { $0.isLowercase }.count
    return Float(uppercaseCount) - Float(lowercaseCount)
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = getStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = getStrength(extension: extension)
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func getStrength(extension: String) -> Float {
    let uppercaseCount = extension.filter { $0.isUppercase }.count
    let lowercaseCount = extension.filter { $0.isLowercase }.count
    return Float(uppercaseCount) - Float(lowercaseCount)
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = calculateStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = calculateStrength(extension: extension)
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func calculateStrength(extension: String) -> Float {
    let uppercaseCount = extension.filter { $0.isUppercase }.count
    let lowercaseCount = extension.filter { $0.isLowercase }.count
    return Float(uppercaseCount) - Float(lowercaseCount)
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = calculateStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = calculateStrength(extension: extension)
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func calculateStrength(extension: String) -> Float {
    let uppercaseCount = extension.filter { $0.isUppercase }.count
    let lowercaseCount = extension.filter { $0.isLowercase }.count
    return Float(uppercaseCount) - Float(lowercaseCount)
}

print(Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"])) // "my_class.AA"
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = calculateStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = calculateStrength(extension: extension)
        if extensionStrength > strongestExtension.strength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func calculateStrength(extension: String) -> Float {
    let uppercaseLetters = extension.filter { $0.isUppercase }.count
    let lowercaseLetters = extension.filter { $0.isLowercase }.count
    return Float(uppercaseLetters) - Float(lowercaseLetters)
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = calculateStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = calculateStrength(extension: extension)
        if extensionStrength > strongestExtension.strength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func calculateStrength(extension: String) -> Float {
    let uppercaseLetters = extension.filter { $0.isUppercase }.count
    let lowercaseLetters = extension.filter { $0.isLowercase }.count
    return Float(uppercaseLetters) - Float(lowercaseLetters)
}

print(Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"])) // "my_class.AA"
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = calculateStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = calculateStrength(extension: extension)
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func calculateStrength(extension: String) -> Float {
    let uppercaseCount = extension.filter { $0.isUppercase }.count
    let lowercaseCount = extension.filter { $0.isLowercase }.count
    return Float(uppercaseCount) - Float(lowercaseCount)
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = calculateStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = calculateStrength(extension: extension)
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func calculateStrength(extension: String) -> Float {
    let uppercaseCount = extension.filter { $0.isUppercase }.count
    let lowercaseCount = extension.filter { $0.isLowercase }.count
    return Float(uppercaseCount) - Float(lowercaseCount)
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = calculateStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = calculateStrength(extension: extension)
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func calculateStrength(extension: String) -> Float {
    let uppercaseCount = extension.filter { $0.isUppercase }.count
    let lowercaseCount = extension.filter { $0.isLowercase }.count
    return Float(uppercaseCount) - Float(lowercaseCount)
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = calculateStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = calculateStrength(extension: extension)
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func calculateStrength(extension: String) -> Float {
    let uppercaseCount = extension.filter { $0.isUppercase }.count
    let lowercaseCount = extension.filter { $0.isLowercase }.count
    return Float(uppercaseCount) - Float(lowercaseCount)
}

print(Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"])) // "my_class.AA"
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = calculateStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = calculateStrength(extension: extension)
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func calculateStrength(extension: String) -> Float {
    let uppercaseCount = extension.filter { $0.isUppercase }.count
    let lowercaseCount = extension.filter { $0.isLowercase }.count
    return Float(uppercaseCount) - Float(lowercaseCount)
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = calculateStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = calculateStrength(extension: extension)
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func calculateStrength(extension: String) -> Float {
    let uppercaseCount = extension.filter { $0.isUppercase }.count
    let lowercaseCount = extension.filter { $0.isLowercase }.count
    return Float(uppercaseCount) - Float(lowercaseCount)
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = getStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = getStrength(extension: extension)
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func getStrength(extension: String) -> Float {
    let uppercaseCount = extension.filter { $0.isUppercase }.count
    let lowercaseCount = extension.filter { $0.isLowercase }.count
    return Float(uppercaseCount) - Float(lowercaseCount)
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = getStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = getStrength(extension: extension)
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func getStrength(extension: String) -> Float {
    let uppercaseCount = extension.filter { $0.isUppercase }.count
    let lowercaseCount = extension.filter { $0.isLowercase }.count
    return Float(uppercaseCount) - Float(lowercaseCount)
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = calculateStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = calculateStrength(extension: extension)
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func calculateStrength(extension: String) -> Float {
    let uppercaseLetters = extension.filter { $0.isUppercase }.count
    let lowercaseLetters = extension.filter { $0.isLowercase }.count
    return Float(uppercaseLetters) - Float(lowercaseLetters)
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var strongestStrength = calculateStrength(extension: strongestExtension)
    
    for extension in extensions {
        let extensionStrength = calculateStrength(extension: extension)
        if extensionStrength > strongestStrength {
            strongestExtension = extension
            strongestStrength = extensionStrength
        }
    }
    
    return "\(className).\(strongestExtension)"
}

func calculateStrength(extension: String) -> Float {
    let uppercaseLetters = extension.filter { $0.isUppercase }.count
    let lowercaseLetters = extension.filter { $0.isLowercase }.count
    return Float(uppercaseLetters) - Float(lowercaseLetters)
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestStrength = Int.min
    var strongestExtension = ""
    
    for extension in extensions {
        let strength = extension.filter({ $0.isUppercase() }).count - extension.filter({ $0.isLowercase() }).count
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestStrength = Int.min
    var strongestExtension = ""
    
    for extension in extensions {
        let strength = extension.filter({ $0.isUppercase() }).count - extension.filter({ $0.isLowercase() }).count
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestStrength = Int.min
    var strongestExtension = ""
    
    for extension in extensions {
        let strength = extension.filter({ $0.isUppercase() }).count - extension.filter({ $0.isLowercase() }).count
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestStrength = Int.min
    var strongestExtension = ""
    
    for extension in extensions {
        let strength = extension.filter({ $0.isUppercase() }).count - extension.filter({ $0.isLowercase() }).count
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestStrength = Int.min
    var strongestExtension = ""
    
    for extension in extensions {
        let strength = extension.filter({ $0.isUppercase() }).count - extension.filter({ $0.isLowercase() }).count
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestStrength = Int.min
    var strongestExtension = ""
    
    for extension in extensions {
        let strength = extension.filter({ $0.isUppercase() }).count - extension.filter({ $0.isLowercase() }).count
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestStrength = Int.min
    var strongestExtension = ""
    
    for extension in extensions {
        let strength = extension.filter({ $0.isUppercase() }).count - extension.filter({ $0.isLowercase() }).count
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestStrength = Int.min
    var strongestExtension = ""
    
    for extension in extensions {
        let strength = extension.filter({ $0.isUppercase() }).count - extension.filter({ $0.isLowercase() }).count
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtensionName = ""
    var maxStrength = Int.min
    for extension in extensions {
        let strength = extension.filter({ $0.isUppercase }).count - extension.filter({ $0.isLowercase }).count
        if strength > maxStrength {
            maxStrength = strength
            strongestExtensionName = extension
        }
    }
    return "\(className).\(strongestExtensionName)"
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtensionName = ""
    var maxStrength = Int.min
    for extension in extensions {
        let strength = extension.filter({ $0.isUppercase }).count - extension.filter({ $0.isLowercase }).count
        if strength > maxStrength {
            maxStrength = strength
            strongestExtensionName = extension
        }
    }
    return "\(className).\(strongestExtensionName)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestStrength = Int.min
    var strongestExtension = ""
    
    for extension in extensions {
        let strength = extension.filter({ $0.isUppercase() }).count - extension.filter({ $0.isLowercase() }).count
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestStrength = Int.min
    var strongestExtension = ""
    
    for extension in extensions {
        let strength = extension.filter({ $0.isUppercase() }).count - extension.filter({ $0.isLowercase() }).count
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtensionName = ""
    var maxStrength = Int.min
    for extension in extensions {
        let strength = extension.filter({ $0.isUppercase() }).count - extension.filter({ $0.isLowercase() }).count
        if strength > maxStrength {
            maxStrength = strength
            strongestExtensionName = extension
        }
    }
    return "\(className).\(strongestExtensionName)"
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtensionName = ""
    var maxStrength = Int.min
    for extension in extensions {
        let strength = extension.filter({ $0.isUppercase() }).count - extension.filter({ $0.isLowercase() }).count
        if strength > maxStrength {
            maxStrength = strength
            strongestExtensionName = extension
        }
    }
    return "\(className).\(strongestExtensionName)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestStrength = Int.min
    var strongestExtension = ""
    
    for extension in extensions {
        let strength = extension.filter({ $0.isUppercase() }).count - extension.filter({ $0.isLowercase() }).count
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestStrength = Int.min
    var strongestExtension = ""
    
    for extension in extensions {
        let strength = extension.filter({ $0.isUppercase() }).count - extension.filter({ $0.isLowercase() }).count
        if strength > strongestStrength {
            strongestStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var maxStrength = countUppercase(strongestExtension) - countLowercase(strongestExtension)

    for extension in extensions.dropFirst() {
        let strength = countUppercase(extension) - countLowercase(extension)
        if strength > maxStrength {
            strongestExtension = extension
            maxStrength = strength
        }
    }

    return "\(className).\(strongestExtension)"
}

func countUppercase(_ string: String) -> Int {
    return string.filter({ $0.isUppercase }).count
}

func countLowercase(_ string: String) -> Int {
    return string.filter({ $0.isLowercase }).count
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = extensions[0]
    var maxStrength = countUppercase(strongestExtension) - countLowercase(strongestExtension)

    for extension in extensions.dropFirst() {
        let strength = countUppercase(extension) - countLowercase(extension)
        if strength > maxStrength {
            strongestExtension = extension
            maxStrength = strength
        }
    }

    return "\(className).\(strongestExtension)"
}

func countUppercase(_ string: String) -> Int {
    return string.filter({ $0.isUppercase }).count
}

func countLowercase(_ string: String) -> Int {
    return string.filter({ $0.isLowercase }).count
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtensionName = ""
    var maxStrength = Int.min
    for extension in extensions {
        let strength = extension.filter({ $0.isUppercase() }).count - extension.filter({ $0.isLowercase() }).count
        if strength > maxStrength {
            maxStrength = strength
            strongestExtensionName = extension
        }
    }
    return "\(className).\(strongestExtensionName)"
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtensionName = ""
    var maxStrength = Int.min
    for extension in extensions {
        let strength = extension.filter({ $0.isUppercase() }).count - extension.filter({ $0.isLowercase() }).count
        if strength > maxStrength {
            maxStrength = strength
            strongestExtensionName = extension
        }
    }
    return "\(className).\(strongestExtensionName)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var maxStrength: Double = Double.min
    var strongestExtension: String = ""
    
    for extension in extensions {
        let uppercaseCount = extension.filter { $0.isUppercase }.count
        let lowercaseCount = extension.filter { $0.isLowercase }.count
        let strength = Double(uppercaseCount - lowercaseCount)
        
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var maxStrength: Double = Double.min
    var strongestExtension: String = ""
    
    for extension in extensions {
        let uppercaseCount = extension.filter { $0.isUppercase }.count
        let lowercaseCount = extension.filter { $0.isLowercase }.count
        let strength = Double(uppercaseCount - lowercaseCount)
        
        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }
    
    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var maxStrength: Double = Double.min
    var strongestExtension: String = ""

    for extension in extensions {
        let uppercaseCount = extension.filter { $0.isUppercase }.count
        let lowercaseCount = extension.filter { $0.isLowercase }.count
        let strength = Double(uppercaseCount - lowercaseCount)

        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }

    return "\(className).\(strongestExtension)"
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var maxStrength: Double = Double.min
    var strongestExtension: String = ""

    for extension in extensions {
        let uppercaseCount = extension.filter { $0.isUppercase }.count
        let lowercaseCount = extension.filter { $0.isLowercase }.count
        let strength = Double(uppercaseCount - lowercaseCount)

        if strength > maxStrength {
            maxStrength = strength
            strongestExtension = extension
        }
    }

    return "\(className).\(strongestExtension)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strengthDict: [String: Float] = [:]
    for extension in extensions {
        let uppercaseCount = extension.filter { $0.isUppercase() }.count
        let lowercaseCount = extension.filter { $0.isLowercase() }.count
        let strength = Float(uppercaseCount - lowercaseCount)
        strengthDict[extension] = strength
    }
    let strongestExtension = strengthDict.max(by: { $0.value < $1.value })
    return "\(className).\(strongestExtension.key)"
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strengthDict: [String: Float] = [:]
    for extension in extensions {
        let uppercaseCount = extension.filter { $0.isUppercase() }.count
        let lowercaseCount = extension.filter { $0.isLowercase() }.count
        let strength = Float(uppercaseCount - lowercaseCount)
        strengthDict[extension] = strength
    }
    let strongestExtension = strengthDict.max(by: { $0.value < $1.value })
    return "\(className).\(strongestExtension.key)"
}
```

extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength: Double = Double.min

    for extension in extensions {
        let uppercaseCount = extension.filter { $0.isUppercase }.count
        let lowercaseCount = extension.filter { $0.isLowercase }.count
        let strength = Double(uppercaseCount - lowercaseCount)

        if strength > strongestStrength {
            strongestExtension = extension
            strongestStrength = strength
        }
    }

    return "\(className).\(strongestExtension)"
}

<｜begin▁of▁sentence｜>You are an AI programming assistant, utilizing the Deepseek Coder model, developed by Deepseek Company, and you only answer questions related to computer science. For politically sensitive questions, security and privacy issues, and other non-computer science questions, you will refuse to answer
### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
You will be given the name of a class (a string) and an array of extensions.
The extensions are to be used to load additional classes to the class. The
strength of the extension is as follows: Let CAP be the number of the uppercase
letters in the extension's name, and let SM be the number of lowercase letters 
in the extension's name, the strength is given by the fraction CAP - SM. 
You should find the strongest extension and return a string in this 
format: ClassName.StrongestExtensionName.
If there are two or more extensions with the same strength, you should
choose the one that comes first in the array.
For example, if you are given "Slices" as the class and an array of the
extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should
return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension 
(its strength is -1).
Example:
Strongest_Extension(className: "myClass", extensions: ["AA", "Be", "CC"]) == "my_class.AA"
### Response:
```swift
func Strongest_Extension(className: String, extensions: [String]) -> String {
    var strongestExtension = ""
    var strongestStrength: Double = Double.min

    for extension in extensions {
        let uppercaseCount = extension.filter { $0.isUppercase }.count
        let lowercaseCount = extension.filter { $0.isLowercase }.count
        let strength = Double(uppercaseCount - lowercaseCount)

        if strength > strongestStrength {
            strongestExtension = extension
            strongestStrength = strength
        }
    }

    return "\(className).\(strongestExtension)"
}
```