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slice.go
54 lines (49 loc) · 1011 Bytes
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slice.go
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package function
import (
"math/rand"
"sort"
"time"
)
// InSlice 判断切片中是否存在某值
func InSlice(slice []string, target string) bool {
for _, val := range slice {
if val == target {
return true
}
}
return false
}
// SliceUnique 切片去重
func SliceUnique(slice []string) []string {
if len(slice) <= 1 {
return slice
}
var (
newSlice = make([]string, 0)
m = make(map[string]interface{})
)
for _, v := range slice {
if _, ok := m[v]; ok {
continue
}
m[v] = 0
newSlice = append(newSlice, v)
}
return newSlice
}
// SliceShuffle 打乱切片
func SliceShuffle(slice *[]string) {
gRand := rand.New(rand.NewSource(time.Now().UnixNano()).(rand.Source64))
length := len(*slice) - 1
for i := length; i > 0; i-- {
n := gRand.Intn(i + 1)
(*slice)[i], (*slice)[n] = (*slice)[n], (*slice)[i]
}
}
// SliceSort 切片排序[倒序]
func SliceSort(arr []int64) []int64 {
sort.Slice(arr, func(i, j int) bool {
return arr[i] > arr[j]
})
return arr
}