golang의 정렬 사용에 대해

type User struct {
	Name  string
	Score int}type Users []User

// 摘自: $GOROOT/src/sort/sort.gotype Interface interface {
	// Len is the number of elements in the collection.
	Len() int
	// Less reports whether the element with
	// index i should sort before the element with index j.
	Less(i, j int) bool
	// Swap swaps the elements with indexes i and j.
	Swap(i, j int)}

func (us Users) Len() int {
	return len(us)}func (us Users) Less(i, j int) bool {
	return us[i].Score < us[j].Score}func (us Users) Swap(i, j int) {
	us[i], us[j] = us[j], us[i]}

func main() {
	var us Users	const N = 6

	for i := 0; i < N; i++ {
		us = append(us, User{
			Name:  "user" + strconv.Itoa(i),
			Score: rand.Intn(N * N),
		})
	}

	fmt.Printf("%v\n", us)
	sort.Sort(us)
	fmt.Printf("%v\n", us)}

func myqsort(us []User, lo, hi int) {
	if lo < hi {
		pivot := partition(us, lo, hi)
		myqsort(us, lo, pivot-1)
		myqsort(us, pivot+1, hi)
	}}func partition(us []User, lo, hi int) int {
	tmp := us[lo]
	for lo < hi {
		for lo < hi && us[hi].Score >= tmp.Score {
			hi--
		}
		us[lo] = us[hi]

		for lo < hi && us[lo].Score <= tmp.Score {
			lo++
		}
		us[hi] = us[lo]
	}
	us[lo] = tmp	return hi}