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){
		String input;
		StringBuilder output = new StringBuilder();
		int offset = 32;
		
		//データの入力
		Scanner sc = new Scanner(System.in);
		input = sc.nextLine();
		
		//文字列を1文字ずつ変換
		for (int i = 0; i < input.length(); i++){
			int temp = input.charAt(i);
			
			if (65 <= temp && temp <= 90){
				temp += offset;
			}else if (97 <= temp && temp <= 122){
				temp -= offset;
			}
			
			output.append((char)temp);
		}
		
		System.out.println(output.toString());
	}
}