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 sc = new Scanner(System.in);
		int x[] = new int[100000], y[] = new int[100000];
		int i = 0,a;
		while(true){
			x[i] = sc.nextInt();
			y[i] = sc.nextInt();
			if(x[i] == 0 && y[i] == 0) break;
			if(x[i] > y[i]){
				a = x[i];
				x[i] = y[i];
				y[i] = a;
			}
			i++;
		}
		for(int j = 0; j < i; j++){
			System.out.println(x[j]+" "+y[j]);
		}
	}
 }