rust for 循环

fn main() {
    use std::time::Instant;
    let now = Instant::now(); //计算耗时

    //=====================================================

    for i in 0..5000 {
        println!("{}", i);
    }


    //=====================================================

    //计算耗时
    let duration = now.elapsed();
    let s = duration.as_secs();
    let mut ms = duration.as_millis();
    let mut us = duration.as_micros();
    us -= ms * 1000;
    ms -= s as u128 * 1000;
    println!("耗时：{} s {} ms {} us", s, ms, us);
}

赏 支付宝打赏 微信打赏

如果文章或资源对您有帮助，欢迎打赏作者。一路走来，感谢有您！