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.*;

class Main {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int x = 0;
            int y = 0;
            int cnt = 0;
            boolean end = false;
            
            while(!end){
            	String temp = br.readLine();
            	String[] numbers = temp.split(" ");
            	x = Integer.parseInt(numbers[0]);
            	y = Integer.parseInt(numbers[1]);
            	
            	if((x < 0 && y > 10000) || (x == 0 && y == 0) || cnt > 3000){
            		end = true;
            	}else if(x > y || x == y){
            		System.out.println(x + " " + y);
            	}else if(x < y){
            		System.out.println(y + " " + x);
            	}
            	cnt++;
            }
            

        } catch (Exception e) {
            System.out.println(e);
        }
    }
}