//origin原数组 count 随机取出的个数,最终返回一个count容量的目标数组
func MicsSlice(origin []int64, count int) []int64 {
tmpOrigin := make([]int64, len(origin))
copy(tmpOrigin, origin)
//一定要seed
rand.Seed(time.Now().Unix())
rand.Shuffle(len(tmpOrigin), func(i int, j int) {
tmpOrigin[i], tmpOrigin[j] = tmpOrigin[j], tmpOrigin[i]
})
result :=make([]int64,0,count)
for index, value := range tmpOrigin {
if index==count{
break
}
result = append(result,value)
}
return result
}
func main() {
dest:=MicsSlice([]int64{1,2,3,4,5,6,7},2)
fmt.Println("result....",dest)
}