Go 语言内置的 sort 库可以对各种列表排序，这里是按 string slice 里的字符串长度排序。
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package main
import (
"fmt"
"sort"
)
func main() {
animals := []string{"snail", "dog", "cow", "elephant", "chicken", "mouse"}
fmt.Println(animals)
sort.Strings(animals) // 按 byte 排序
fmt.Println(animals)
sort.Slice(animals, func(i, j int) bool {
return len(animals[i]) < len(animals[j]) // 按字符串长度 升序 排列
})
fmt.Println(animals)
sort.Slice(animals, func(i, j int) bool {
return len(animals[i]) > len(animals[j]) // 按字符串长度 降序 排列
})
fmt.Println(animals)
}
输出
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[snail dog cow elephant chicken mouse]
[chicken cow dog elephant mouse snail]
[cow dog mouse snail chicken elephant]
[elephant chicken mouse snail cow dog]
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