java利用线程并行的方法模拟龟兔赛跑

package com.lipu.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(1);
                } 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");
        }
    }
    //判断是否完成比赛
    private boolean gameOver(int steps){
        //判断是否有胜利者
        if(winner!=null){
            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,"兔子").start();
        new Thread(race,"乌龟").start();


    }
}