(5条消息) java实现龟兔赛跑方法_学习微站的博客-CSDN博客_java龟兔赛跑代码

/**
 * 
 */
package a;

/**
 * @author Administrator
 *
 */
public class Race {
  
  public static void main(String arg[]) {
    Animal a1,a2;
    a1 = new Animal("rabit",100);
    a2 = new Animal("turtle",20);
    a2.setPriority(Thread.MAX_PRIORITY);//让乌龟的运行优先级更高
    a1.start();
    a2.start();
    // TODO Auto-generated method stub

  }

}
class Animal extends Thread{
  int speed;//速度
  public Animal(String str,int speed){
    super(str);//线程名用动物名代表
    this.speed=speed;
  }
  public void run(){
    int distance = 0;
    int sleepTime;
    while(distance<=1000){
      System.out.println(getName()+"is at"+distance);
      try{
        distance+=speed;//每次跑的距离简单用速度计算
        sleepTime = (int)(speed+Math.random()*speed);
        //速度快休息时间更长
        sleep(sleepTime);
      }catch(InterruptedException e){}
    }
  }
}

package b;
import java.awt.*;
import java.applet.*;
import java.awt.event.*;
public class tt extends Applet implements Runnable {
  
  int BeginX=200,EndX=400;
  int RabbitX=BeginX,RabbitY=100;
  int TortoiseX=BeginX,TortoiseY=200;
  int RabbitRestTime=800,TortoiseRestTime=50;
  int RabbitSpeed=15,TortoiseSpeed=1;
  int state=0;
  Thread rabbit;
  Thread tortoise;
  public void init(){
    rabbit=new Thread(this,"rabbit");
    tortoise=new Thread(this,"tortoise");
  }
  public void paint(Graphics g){
    setSize(600,350);
    g.drawString("龟",TortoiseX,TortoiseY);
    g.drawString("兔",RabbitX,RabbitY);
    g.setColor(Color.red);
    for(int j=70;j<=230;j+=10)
      g.drawString("|",EndX+8,j);
    g.setColor(Color.black);
    if(state==1) g.drawString("兔子赢了！！", 250, 300);
    else if(state==2) g.drawString("乌龟赢了！！", 250, 300);
  }
  public void start(){
    rabbit.start();
    tortoise.start();
  }
  public void run(){
    String currentRunning;
    while(state==0){
      currentRunning=Thread.currentThread().getName();
      if(currentRunning.equals("rabbit")){
        try{
          Thread.sleep((int)(Math.random()*RabbitRestTime));
        }
        catch(InterruptedException e){}
          RabbitX+=RabbitSpeed;
          if(RabbitX>EndX)RabbitX=EndX;
        
      }
      else if(currentRunning.equals("tortoise")){
        try{
          Thread.sleep((int)(Math.random()*TortoiseRestTime));
        }
        catch(InterruptedException e){}
        TortoiseX+=TortoiseSpeed;
        if(TortoiseX>EndX)TortoiseX=EndX;
      }
      if(RabbitX==EndX)state=1;
      else if(TortoiseX==EndX)state=2;
      repaint();
    }
  }
}