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 Go (judge verdict: Accepted)

package main

import (
	"fmt"
)

func main() {

	for {

		var n [2]int
		//n := ScanedLinetoIntSlice()
		fmt.Scanln(&n[0], &n[1])

		if (n[0] == 0) && (n[1] == 0) {
			break
		}
		if n[0] > n[1] {
			n[0], n[1] = swap(n[0], n[1])
		}
		fmt.Println(n[0], n[1])
	}

}

func swap(a, b int) (int, int) {
	return b, a
}

/*
func ScanedLinetoIntSlice() []int {

	var sc = bufio.NewScanner(os.Stdin)
	sc.Scan()
	line := sc.Text()

	words := strings.Fields(line)

	var numbers []int

	for _, v := range words {
		number, _ := strconv.Atoi(v)
		numbers = append(numbers, number)
	}

	return numbers
}
*/