Golang map字典按值排序

package main

import (
	"fmt"
	"sort"
)

func main() {
	m := map[string]int32{
		"roy":   18,
		"kitty": 16,
		"hugo":  21,
		"tina":  35,
		"jason": 23,
	}
	lst := []string{}
	for k, _ := range m {
		lst = append(lst, k)
	}
	sort.Strings(lst) //排序字符串
	fmt.Println(lst)

	m1 := map[int]string{
		19: "roy",
		41: "kitty",
		32: "jason",
		23: "hugo",
	}
	lst1 := []int{}
	for k, _ := range m1 {
		lst1 = append(lst1, k)
	}
	sort.Ints(lst1)		//排序int类型
	fmt.Println(lst1)
}

通过结构体实现字典按值排序。

package main

import (
	"fmt"
	"sort"
)

func main() {
	mapInfo := map[string]int32{
		"roy":18,
		"kitty":16,
		"hugo":21,
		"tina":35,
		"jason":23,
	}

	type peroson struct {
		Name string
		Age int32
	}

	var lstPerson []peroson
	for k, v := range mapInfo {
		lstPerson = append(lstPerson, peroson {k, v})
	}

	sort.Slice(lstPerson, func(i, j int) bool {
		return lstPerson[i].Age > lstPerson[j].Age  // 降序
		// return lstPerson[i].Age < lstPerson[j].Age  // 升序
	})

	fmt.Println(lstPerson)
}

按值排序 转载自：https://www.golangnote.com/topic/75.html