Question

JAVA编程题龟兔赛跑

龟兔赛跑动物类Animal 属性:速度speed(米/秒)方法:跑run(int length) 参数length:要跑多少米方法中输出lengh米跑了多少秒兔子类Rabbit 继承Animal乌龟类Tortoise 继承Animal比赛类Match属性：length 比赛总距离方法:begin(Rabbit,Tortoise),参数为两个对象,在方法中能够输出length米两种动物跑了多少秒

Answer 1

class Animal {
public double speed;

public void run(int length) {
System.out.println(length/this.speed);
}
}
class Rabbit extends Animal {
Rabbit(int speed) {
super.speed = speed;
}
@Override
public void run(int length) {
System.out.println("Rabbit time = "+length/this.speed +" seconds");
}

}
class Tortoise extends Animal {
Tortoise(int speed) {
super.speed = speed;
}

@Override
public void run(int length) {
System.out.println("Tortoise time = "+length/this.speed +" seconds");
}
}
public class Match {
public static int length = 100;

private static void begin(Rabbit r,Tortoise t) {
r.run(length);
t.run(length);
}

public static void main(String[] args) {
Rabbit r = new Rabbit(20);
Tortoise t = new Tortoise(5);
begin(r,t);
}
}