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: Wrong Answer)

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String str = sc.next();
		char[] charArray = str.toCharArray();
		for (int i = 0; i < charArray.length; i++) {
			if (Character.isUpperCase(charArray[i])) {
				charArray[i] = Character.toLowerCase(charArray[i]);
			} else {
				charArray[i] = Character.toUpperCase(charArray[i]);
			}
		}
		for (char ch : charArray) {
			System.out.print(ch);
		}
		System.out.println();

	}

}