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: Wrong Answer)

public class Main {


		public static void main(String[] args) {
		java.util.Scanner scan = new java.util.Scanner(System.in);
		int x;
		int y;
		int i;
		int t = 0;
		do{
		x = scan.nextInt();
		y = scan.nextInt();
		if(0<x && x<=10000 && 0<y && y<=10000){
			if(x<=y){
			System.out.println(x+" "+y);
			}else{
				i = x;
				x = y;
				y = i;
				System.out.println(x+" "+y);
			}
		}t += 1;
		if(x == 0 && y == 0){
			break;
		}
	}while(t <= 3000);
}




		}