1.定义父类
package cn.demo.extend.demo13;
public class User {
private String name;
private int money;
public User(){
}
public User(String name, int money) {
this.name = name;
this.money = money;
}
public void show(){
System.out.println("我叫:"+name+",我有多少钱:"+money);
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getMoney() {
return money;
}
public void setMoney(int money) {
this.money = money;
}
}
2.定义发红包的群主类
package cn.demo.extend.demo13;
import java.util.ArrayList;
public class Manager extends User{
public Manager(){
}
public Manager(String name, int money) {
super(name, money);
}
public ArrayList<Integer> send(int totalMoney,int count){
ArrayList<Integer> redList = new ArrayList<>();
int leftMoney = super.getMoney();
if (totalMoney > leftMoney){
System.out.println("余额不足");
return redList;
}
super.setMoney(leftMoney - totalMoney);
int avg = totalMoney / count;
int mod = totalMoney % count;
for (int i = 0; i < count - 1; i++) {
redList.add(avg);
}
int last = avg + mod;
redList.add(last);
return redList;
}
}
3.定义普通成员类
package cn.demo.extend.demo13;
import java.util.ArrayList;
import java.util.Random;
public class Member extends User{
public Member() {
}
public Member(String name, int money) {
super(name, money);
}
public void receive(ArrayList<Integer> list){
int index = new Random().nextInt(list.size());
int delta = list.remove(index);
int money = super.getMoney();
super.setMoney(money + delta);
}
}
4.定义主类
package cn.demo.extend.demo13;
import java.util.ArrayList;
public class MainRed {
public static void main(String[] args) {
Manager manager = new Manager("群主",100);
Member one = new Member("成员A",0);
Member two = new Member("成员B",0);
Member three = new Member("成员C",0);
manager.show();
one.show();
two.show();
three.show();
System.out.println("===============");
ArrayList<Integer> redList = manager.send(20,3);
one.receive(redList);
two.receive(redList);
three.receive(redList);
manager.show();
one.show();
two.show();
three.show();
}
}