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) throws Exception {
         
        Scanner sc = new Scanner(System.in);
        
            String T = sc.nextLine();
            
            for(int i=0;i<T.length();i++){
                
          	  if( Character.isUpperCase( T.charAt( i ) ) ) {	
                
          		  System.out.print(Character.toLowerCase( T.charAt( i )) );
                
				}else if (Character.isLowerCase( T.charAt( i ) )){
                
          			  System.out.print(Character.toUpperCase( T.charAt( i )) );
                
            	}else{
                   System.out.print( T.charAt( i ));
              }
            }
                        System.out.println();
        sc.close();
    }
}