统计程序耗时的 demo

统计程序耗时的代码片段

Python

import time

start_time = time.time()
time.sleep(1)

use_cost = round((time.time() - start_time) * 1000, 2)

print(use_cost)

Java

Go

func stats(){
    time.Sleep(time.Second)
}
 
func main(){
    var startTime int64 = time.Now().UnixNano() / 1e6
    stats()
    var endTime int64 = time.Now().UnixNano() / 1e6
    fmt.Println("use time:", endTime - startTime)
}
 
运行结果：
1001

ending ~