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 sc = new java.util.Scanner(System.in);

		int i = 0;
		do {
			int x = sc.nextInt();
			int y = sc.nextInt();
			if (x == 0 || y == 0) {
				break;
			}
			if (x > y) {
				System.out.println(y + " " + x);
			} else if (x < y) {
				System.out.println(x + " " + y);
			}
			i++;

		} while (i < 3000);
	}

}