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: WA: Presentation Error)

import java.util.*;

public class Main {
    public static void main( String args[] ) {
        Scanner scan = new Scanner( System.in );
        char[] charaArray = scan.nextLine().toCharArray();
        scan.close();
        
        for( char chara: charaArray ) {
            char result;
            if( Character.isUpperCase(chara) ) {
                result = Character.toLowerCase(chara);
                
            } else {
                result = Character.toUpperCase(chara);
                
            }
            System.out.print( result );
            
        }
        
        
        
    }
}