Question

How to reverse the case of each character in a string with Swift

Answer 1

import Foundation

func reverseCase(of str: String) -> String {
    var result = ""
    
    for char in str {
        if char.isLowercase {
            result.append(char.uppercased())
        } else if char.isUppercase {
            result.append(char.lowercased())
        } else {
            result.append(char)
        }
    }
    
    return result
}


let s = "ABC++xyz"

let reversedcase = reverseCase(of: s)

print(reversedcase) 



/*
run:

abc++XYZ

*/

 

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