给定一个数组/列表/Slice,随机打乱顺序
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package main
import (
"fmt"
"math/rand"
"time"
)
func main() {
slice := []interface{}{"a", "b", "c", "d", "e", "f"}
Shuffle(slice)
fmt.Println(slice)
for _, v := range slice {
fmt.Println(v.(string))
}
}
func Shuffle(slice []interface{}) {
r := rand.New(rand.NewSource(time.Now().Unix()))
for len(slice) > 0 {
n := len(slice)
randIndex := r.Intn(n)
slice[n-1], slice[randIndex] = slice[randIndex], slice[n-1]
slice = slice[:n-1]
}
}
运行,每次输出都不同:
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[f c e d b a]
f
c
e
d
b
a
There are 2 Comments to "Golang 随机打乱数组/Slice"
为什么不用
rand.Shuffle
??@smallwhite 一点性能改善