Java多线程05-龟兔赛跑问题

龟兔赛跑问题

public class TestThread5 implements Runnable{
    private static String winner;//注意final是静态常量不可修改
    private static int num=0;
    @Override
    public void run() {
        for (int i = 0; i <= 100000; i++) {
            //模拟兔子休息
//            if (Thread.currentThread().getName().equals("兔子") && i%10==0) {
//                try {
//                    Thread.sleep(20);
//                } catch (InterruptedException e) {
//                    e.printStackTrace();
//                }
//            }
            //判断比赛是否结束
            boolean flag=gameOver(i);
            if (flag) {
                num=i;
                break;
            }

        }
        System.out.println(Thread.currentThread().getName()+"-->跑了"+num+"步");
    }

    private boolean gameOver(int steps){
        if (winner != null) {
            return true;
        }else if (steps >=100000){
            winner =Thread.currentThread().getName();
            System.out.println("winner is "+winner);
            return true;
        }
        return false;
    }

    public static void main(String[] args) {
        TestThread5 testThread5=new TestThread5();
        new Thread(testThread5,"兔子").start();
        new Thread(testThread5,"乌龟").start();
    }
}

实现结果

winner is 乌龟
兔子-->跑了35158步
乌龟-->跑了100000步