golang map sort
夜空一起砍猩猩 · · 8293 次点击 · · 开始浏览import (
"fmt"
"sort"
)
type MapSorter []Item
type Item struct {
Key string
Val int64
}
func NewMapSorter(m map[string]int64) MapSorter {
ms := make(MapSorter, 0, len(m))
for k, v := range m {
ms = append(ms, Item{k, v})
}
return ms
}
func (ms MapSorter) Len() int {
return len(ms)
}
func (ms MapSorter) Less(i, j int) bool {
return ms[i].Val < ms[j].Val // 按值排序
//return ms[i].Key < ms[j].Key // 按键排序
}
func (ms MapSorter) Swap(i, j int) {
ms[i], ms[j] = ms[j], ms[i]
}
func main(){
m := map[string]int64 {
"e": 10,
"a": 2,
"d": 15,
"c": 8,
"f": 1,
"b": 12,
}
ms := NewMapSorter(m)
sort.Sort(ms)
for _, item := range ms {
fmt.Printf("%s:%d\n", item.Key, item.Val)
}
}
有疑问加站长微信联系(非本文作者)
入群交流(和以上内容无关):加入Go大咖交流群,或添加微信:liuxiaoyan-s 备注:入群;或加QQ群:692541889
关注微信- 请尽量让自己的回复能够对别人有帮助
- 支持 Markdown 格式, **粗体**、~~删除线~~、
`单行代码` - 支持 @ 本站用户;支持表情(输入 : 提示),见 Emoji cheat sheet
- 图片支持拖拽、截图粘贴等方式上传
收入到我管理的专栏 新建专栏
import (
"fmt"
"sort"
)
type MapSorter []Item
type Item struct {
Key string
Val int64
}
func NewMapSorter(m map[string]int64) MapSorter {
ms := make(MapSorter, 0, len(m))
for k, v := range m {
ms = append(ms, Item{k, v})
}
return ms
}
func (ms MapSorter) Len() int {
return len(ms)
}
func (ms MapSorter) Less(i, j int) bool {
return ms[i].Val < ms[j].Val // 按值排序
//return ms[i].Key < ms[j].Key // 按键排序
}
func (ms MapSorter) Swap(i, j int) {
ms[i], ms[j] = ms[j], ms[i]
}
func main(){
m := map[string]int64 {
"e": 10,
"a": 2,
"d": 15,
"c": 8,
"f": 1,
"b": 12,
}
ms := NewMapSorter(m)
sort.Sort(ms)
for _, item := range ms {
fmt.Printf("%s:%d\n", item.Key, item.Val)
}
}