龟兔赛跑

package com.guo.demo01;

/**
 * 模拟龟兔赛跑
 */
public class Race implements Runnable{

    private String winner;

    @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(1);
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }

            //判断比赛是否结束
            boolean flag = gameover(i);
            //如果比赛结束了，就停止程序
            if (flag==true){
                break;
            }
            System.out.println(Thread.currentThread().getName()+"-->跑了"+i+"步");

        }
    }

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

    public static void main(String[] args) {
        Race race = new Race();
        new Thread(race,"兔子").start();
        new Thread(race,"乌龟").start();
    }
}