Problem:
Toggling Cases

Write a program which converts uppercase/lowercase letters to lowercase/uppercase for a given string.

Input

A string is given in a line.

Output

Print the converted string in a line. Note that you do not need to convert any characters other than alphabetical letters.

Constraints

The length of the input string < 1200

Sample Input

fAIR, LATER, OCCASIONALLY CLOUDY.

Sample Output

Fair, later, occasionally cloudy.

Solution in JAVA (judge verdict: Accepted)

import java.util.Scanner;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        
        for(int i = 0; i < s.length(); i++){
            
        	if( Character.isUpperCase(s.charAt(i)) ) {
                System.out.print(Character.toLowerCase(s.charAt(i)));}
            
        else if( Character.isLowerCase(s.charAt(i)) ){
            System.out.print(Character.toUpperCase(s.charAt(i)));}
            
            else{System.out.print(s.charAt(i));}
            
        }
        System.out.println();
        sc.close();
    }
}