go语言之map排序

package main

import (
   "sort"
   "fmt"
)

func main() {
   lockTest()
}
func lockTest() {
   var mp map[string]int
   mp = make(map[string]int)
   mp["1"] = 1
   mp["5"] = 45
   mp["6"] = 3
   mp["4"] = 22
   mp["2"] = 5
   mp["3"] = 16

   sortMap(mp)
   fmt.Println()
   sortMap2(mp)
}

/**
根据key排序
 */
func sortMap2(mp map[string]int) {
   var newMp = make([]string, 0)
   for k, _ := range mp {
      newMp = append(newMp, k)
   }
   sort.Strings(newMp)
   for _, v := range newMp {
      fmt.Println("根据key排序后的新集合》》   key:", v, "    value:", mp[v])
   }
}

/**
根据value排序
 */
func sortMap(mp map[string]int) {
   var newMp = make([]int, 0)
   var newMpKey = make([]string, 0)
   for oldk, v := range mp {
      newMp = append(newMp, v)
      newMpKey = append(newMpKey, oldk)
   }
   sort.Ints(newMp)
   for k, v := range newMp {
      fmt.Println("根据value排序后的新集合》》  key:", newMpKey[k], "    value:", v)
   }
}