Problem:
Swapping Two Numbers

Write a program which reads two integers x and y, and prints them in ascending order.

Input

The input consists of multiple datasets. Each dataset consists of two integers x and y separated by a single space.

The input ends with two 0 (when both x and y are zero). Your program should not process for these terminal symbols.

Output

For each dataset, print x and y in ascending order in a line. Put a single space between x and y.

Constraints

0 ≤ x, y ≤ 10000

the number of datasets ≤ 3000

Sample Input

3 2
2 2
5 3
0 0

Sample Output

2 3
2 2
3 5

Solution in JAVA (judge verdict: Accepted)

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner kbScanner = new Scanner(System.in);
		int input1 = kbScanner.nextInt();
		int input2 = kbScanner.nextInt();
		
		while((input1 != 0) || (input2 != 0)){
			if(input1 > input2){
				int oki = input1;
				input1 = input2;
				input2 = oki;
			}
			System.out.println(input1 + " " + input2);
			input1 = kbScanner.nextInt();
			input2 = kbScanner.nextInt();
		}
	}
}