golang结构体sort排序

package main

import (
   "fmt"
   "math/rand"
   "sort"
   "strconv"
)

func main() {
   oneArr := make([]*One, 10)
   for i := 0; i < 10; i++ {
      oneArr[i] = &One{
         Name: "name" + strconv.FormatInt(int64(i), 10),
         Num:  rand.Intn(1000),
      }
   }

   sort.Sort(OneList(oneArr))
   for _, v := range oneArr {
      fmt.Print(v, " ")
   }

}

type One struct {
   Num  int
   Name string
}

type OneList []*One

func (this OneList) Len() int {
   return len(this)
}
func (this OneList) Less(i, j int) bool {
   return this[i].Num < this[j].Num
}
func (this OneList) Swap(i, j int) {
   this[i], this[j] = this[j], this[i]
}