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.io.InputStreamReader;
import java.util.Arrays;
import java.io.BufferedReader;
import java.io.IOException;

class Main {
	public static void main(String[] args) throws IOException {
		InputStreamReader is = new InputStreamReader(System.in);
		BufferedReader  br = new BufferedReader(is);
		while (true) {
			String[] strAry = br.readLine().split(" ");
			if (strAry[0].equals("0") && strAry[1].equals("0")) {
				break;
			} else {
				Arrays.sort(strAry);
				System.out.println(strAry[0] + " " + strAry[1]);
			}
		}
	}
}