多线程龟兔赛跑案例

模拟龟兔赛跑

让兔子睡眠

最终乌龟胜利

package com.chen.lesson03;

public class Race implements Runnable{

    //定义一个变量 胜利者
    private static String winnner;
    @Override
    public void run() {



        for (int i = 0; i <= 100; i++) {
            //模拟兔子休息
            if (Thread.currentThread().getName().equals("兔子") && i%10==0){
                try {
                    Thread.sleep(200);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }

            boolean flag = gameOver(i);
            if (flag){
                break;
            }
            System.out.println(Thread.currentThread().getName()+"跑了"+i+"米");
        }
    }

    //判断是否完成比赛
    private boolean gameOver(int steps){
        //判断是否有胜利者
        if (winnner != null){//已经存在胜利者
            return true;
        }{
            if (steps >= 100){
                winnner = Thread.currentThread().getName();
                System.out.println("winner 是"+winnner);
                return true;
            }
        }
        return false;
    }

    public static void main(String[] args) {
        Race race = new Race();

        new Thread(race,"兔子").start();
        new Thread(race,"乌龟").start();
    }
}