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: WA: Presentation Error)

import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);
        String s1 = sc.nextLine();
        
        sc.close();
        
        String[] strArray1 = new String[s1.length()];
        String[] strArray2 = new String[s1.length()];
        for (int i = 0; i < s1.length(); i++) {
        strArray1[i] = String.valueOf(s1.charAt(i));
        }
        for (int i = 0; i < s1.length(); i++) {
        strArray2[i] = String.valueOf(s1.charAt(i)).toLowerCase();
        }
        for (int i = 0; i < s1.length(); i++) {
            if(strArray1[i].equals(strArray2[i])){
                strArray2[i] = strArray1[i].toUpperCase();
            }
            
        }
        for (int i = 0; i < strArray1.length; i++) {
        System.out.print(strArray2[i]);
        }

	}

}