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: Accepted)

import java.util.Scanner;

public class Main {
    public static void main(String[] args){
       int count=3000;
       Scanner scan= new Scanner(System.in);

       for(int i=1;i<=count;i++){
           int x=scan.nextInt();
           int y=scan.nextInt();
           if(x==0 && y==0){
               break;
           }else{
               if(x > y){
                   int temp=x;
                   x=y;
                   y=temp;
               }
               System.out.println(x+" "+y);
           }
       }
    }
}