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)

import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String str = sc.nextLine();
		String[] data = str.split(" ");
		int num[] = new int[data.length];
		for(int i = 0; i < data.length; i++){
			num[i] = Integer.parseInt(data[i]);
		}

		int x = num[0];
		int y = num[1];

		if(x >= y) {
			System.out.println(y + " " + x);
		} else {
			System.out.println(x + " " + y);
		}
	}
}