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 JavaScript (judge verdict: Wrong Answer)

function main(line) {
	for(var i = 0; i < line.length; i++){
		temp = line[i].split(' ')
		if(temp[0]==0 & temp[1]==0){
			break;
		}else if(temp[0] <= temp[1]){
			console.log(temp[0] + " " + temp[1])
		}else{
			console.log(temp[1] + " " + temp[0])
		}	
	}
}

var input = '';

process.stdin.resume();
process.stdin.setEncoding('utf8');
process.stdin.on('data', function(chunk) {
  input += chunk;
});
process.stdin.on('end', function() {
  input = input.split('\n');
  main(input);
});