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 C# (judge verdict: Accepted)

using System;

	public class Class1
	{
		public static void Main()
		{   
		
			for(int j=0;j<3000;j++)
			{
				string dataSet=Console.ReadLine();
				string[] data=dataSet.Split();
				int x=int.Parse(data[0]);
				int y =int.Parse(data[1]);
				
				
				if(x==0&&y==0)
			{
				break;
			
			}
			else {
					if(x<=y)
				Console.WriteLine("{0} {1}",x,y);
				  else 
				  	Console.WriteLine("{0} {1}",y,x);
			      }
			}
			
		}
	}