package cn.hope.day09.demo09;/** * @author newcityman * @date 2019/7/11 - 22:57 */public class User {private String name; private Integer money; public User() { }public User(String name, Integer money) {this.name = name; this.money = money; }public String getName() {return name; }public void setName(String name) {this.name = name; }public Integer getMoney() {return money; }public void setMoney(Integer money) {this.money = money; }public void show(){ System.out.println("我是："+this.name+",我的余额是："+this.money); }}
package cn.hope.day09.demo09;import java.util.ArrayList;import java.util.Random;/** * @author newcityman * @date 2019/7/11 - 23:24 */public class Member extends User {public Member() { }public Member(String name, Integer money) {super(name, money); }public void receive(ArrayList<Integer> list){//从红包中随机抽取一个，给自己 //随机抽取一个集合中的索引编号 int index= new Random().nextInt(list.size()); //根据索引，从集合中删除，并且得到被删除的红包，给自己 int delta = list.remove(index); //当前成员目前本来有多少钱 int money = super.getMoney(); //收取红包，存进腰包 super.setMoney(money+delta); }}
package cn.hope.day09.demo09;import java.util.ArrayList;/** * @author newcityman * @date 2019/7/11 - 23:00 *///群主的类public class Manager extends User {public Manager() { }public Manager(String name, Integer money) {super(name, money); }public ArrayList<Integer> send(int totalMoney,int count) {//首先需要创建一个集合，用来存储若干个红包 ArrayList<Integer> redList = new ArrayList<>(); //首先看看群主有多少钱 int leftMoney = super.getMoney(); if (totalMoney > leftMoney) { System.out.println("余额不足，请充值"); return redList; }//扣钱，其实就是重新设置余额 super.setMoney(leftMoney - totalMoney); //红包需要平均拆分成count份 int avg = totalMoney / count; int mod = totalMoney % count; //除不开的零头，包在最后一个红包当中 //下面把红包放到集合中去 for (int i = 0; i < count - 1; i++) { redList.add(avg); }//最后一个红包 int last = avg + mod; redList.add(last); return redList; }}
package cn.hope.day09.demo09;import java.util.ArrayList;/** * @author newcityman * @date 2019/7/11 - 23:36 */public class MainRedPacket {public static void main(String[] args) { Manager m = new Manager("群主",100); Member one = new Member("zmy",0); Member two = new Member("zmk",0); Member three = new Member("zmh",0); m.show(); one.show(); two.show(); three.show(); System.out.println("========================"); ArrayList<Integer> list = m.send(20,3); one.receive(list); two.receive(list); three.receive(list); m.show(); one.show(); two.show(); three.show(); }}
转载于:https://www.cnblogs.com/newcityboy/p/11180094.html
相关资源：JAVA上百实例源码以及开源项目
