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.*;
class Main {
    public static void main (String[] args) throws java.lang.Exception {
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        for(int i = 0; i < s.length(); i++) {
            char c = s.charAt(i);
            if('a' <= c && c <= 'z') System.out.print((char)(c - 32));
            else if('A' <= c && c <= 'Z') System.out.print((char)(c + 32));
            else System.out.print(c);
        }
        System.out.println();
    }
}