多线程详解p7、龟兔赛跑

public class Race implements Runnable{
    //模拟龟兔赛跑
    private static String winner;
    @Override
    public void run() {
        for (int i = 0; i <= 100; i++) {
            //判断比赛是否结束
            boolean flag = gameOver(i);
            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 step){
        if(winner!=null){
            return true;
        }
            if (step >= 100) {
                winner = Thread.currentThread().getName();
                System.out.println("胜利者为" + 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();
    }
}