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;

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

		int i = 0;
		int min = 0;
		int max = 0;

		while(true){	
		int x = scan.nextInt();
		int y = scan.nextInt();
		if(x>y || x==y){
			min = y;
			max = x;
		}else{
			min = x;
			max = y;
		}
		if(x==0 && y==0) break;
		System.out.println(min + " " + max);
		}
	}
}