八、龟兔赛跑

案例：

1. 首先来个赛道距离，然后要离终点越来越近
2. 判断比赛是否结束
3. 打印出胜利者
4. 龟兔赛跑开始
5. 故事中是乌龟赢的，兔子需要睡觉，所以我们来模拟兔子睡觉
6. 终于，乌龟赢得比赛

代码：

public class Race implements Runnable{       final int nums=100;     private static String winner;      public static void main(String[] args) {          Race race = new Race();         new Thread(race,兔子).start();         new Thread(race,乌龟).start();     }      @Override     public void run() {         //模拟兔子睡觉         String name = Thread.currentThread().getName();         if (name.equals(兔子)){             try {                 Thread.sleep(2);             } catch (InterruptedException e) {                 throw new RuntimeException(e);             }         }          for (int i = 1; i <= nums; i++) {             boolean gameOver = isGameOver(i);             if (gameOver){                 break;             }             System.out.println(name +跑到了+i);         }     }      boolean isGameOver(int steps){         if (winner!=null){             return true;         }else if (steps==nums){             winner=Thread.currentThread().getName();             System.out.println(winner+赢了);             return true;         }else return false;     } }

 

结果：