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;
import java.lang.Character;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String line = sc.nextLine();

        for (int i = 0; i < line.length(); i++) {
            char tmp = line.charAt(i);
            if(Character.isUpperCase(tmp)) {
                tmp = Character.toLowerCase(tmp);
            } else if (Character.isLowerCase(tmp)) {
                tmp = Character.toUpperCase(tmp);
            }
            System.out.print(tmp);
        }
        System.out.println();
    }
}