通过多线程 写出龟兔赛跑

package com.jishu.demo01;

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

    private static 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(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }

            //判断比赛是否结束
            boolean flag=gameOver(i);
            //如果比赛结束，就停止程序
            if(flag){
                break;
            }

            System.out.println(Thread.currentThread().getName()+"跑了"+i+"步");
        }

    }
    public boolean gameOver(int steps) {
        if (winner != null) {//已经存在胜利者了
            //比赛结束
            return true;
        }{
            if(steps>=100){
                winner =Thread.currentThread().getName();
                System.out.println("Winner is"+winner);
                return true;
            }
        }

      return false;
    }

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

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

    }
}