我想對(duì)元素的索引進(jìn)行排序而不是對(duì)切片進(jìn)行排序。因?yàn)閇]string{"dog","cat","apple","bat"}我想得到[]int{2,3,1,0}package mainimport (    "fmt"    "sort"    "strings")func main() {    arr := []string{"dog","cat","apple","bat"}    n := len(arr)    indices := make([]int, n)    for i:=0;i<n;i++{        indices[i]=i    }    sort.Slice(indices, func(i,j int) bool {return strings.Compare(arr[i],arr[j])<0})    fmt.Println(arr, indices) // [dog cat apple bat] [2 1 0 3]        sort.Slice(arr, func(i,j int) bool {return strings.Compare(arr[i],arr[j])<0})    fmt.Println(arr) //[apple bat cat dog] }