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|
package main
import (
"fmt"
"math/rand"
"time"
)
func timeCost() func() {
start := time.Now()
return func() {
// 纳秒
println("time cost ", time.Since(start))
}
}
func testBuble(arr []int) []int {
defer timeCost()()
return bubble(arr)
}
func main() {
source := rand.Perm(1000)
fmt.Println(source)
fmt.Println(testBuble(source))
return
}
func bubble(arr []int) []int {
l := len(arr)
for i := 0; i < l; i++ {
for j := 0; j < l-i-1; j++ {
if arr[j] > arr[j+1] {
arr[j], arr[j+1] = arr[j+1], arr[j]
}
}
}
return arr
}
|
