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) {
		Scanner sc = new Scanner(System.in);
		int[] x = new int[3000];
		int[] y = new int[3000] ;
	//Input 
		for (int i = 0; i<x.length ; i++) {
			
			x[i] = sc.nextInt();
			y[i] = sc.nextInt();
			if(x[i] == 0 & y[i] == 0) break;
		}
	// Output
		for (int i = 0; i<x.length ; i++) {
			if(x[i] == 0 & y[i] == 0) {
				break;
			}else {
			   if(x[i] > y[i]) {
				System.out.println(y[i] + " " + x[i]);
			   }
			   if(x[i] < y[i]) {
				System.out.println(x[i] + " " + y[i]);
			   }
			   if(x[i] == y[i]) {
				System.out.println(x[i] + " " + x[i]);
			   }
		    }
		}
		
	    sc.close();
	
  }
	
}