java---龟兔赛跑

java—龟兔赛跑

代码演示:
public class Race implements Runnable {

    /**
     * 1、实例化两个线程
     * 2、判断谁是胜利者
     * 3、模拟兔子睡觉
     */
    // 胜利者
    private static String winner = null;

    @Override
    public void run() {
        for (int i = 1; i <= 150; i++) {
            boolean flag = gameOver(i);
            // 调节比赛速度
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            // 模拟兔子睡觉
            if("兔子".equals(Thread.currentThread().getName()) && i % 10 == 0) {
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            System.out.println(Thread.currentThread().getName() + "跑了" + i + "米");
            if(flag) {
                break;
            }
        }
    }

    /**
     * 判断比赛是否结束
     */
    public boolean gameOver(int meters) {
        // 已经分出胜负
        if (winner != null) {
            return true;
        }
        // 已经跑到终点
        if (meters == 100) {
            winner = Thread.currentThread().getName();
            System.out.println("胜利者是" + winner);
            return true;
        }
        return false;
    }

    public static void main(String[] args) {
        // 实例化两个线程
        Race race = new Race();
        Thread thread1 = new Thread(race, "乌龟");
        Thread thread2 = new Thread(race, "兔子");
        thread1.start();
        thread2.start();
    }
}