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) {
		try (Scanner sc = new Scanner(System.in)) {
			String line = sc.nextLine();
			String answer = "";
			int length = line.length();
			for (int i = 0; i < length; i++) {
				char ch = line.charAt(i);
				if(Character.isLowerCase(ch)){
					answer += Character.toUpperCase(ch);
				}else{
					answer += Character.toLowerCase(ch);
				}
			}
			System.out.println(answer);
		}	
	}
	
}