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package com.jou.money;public class User {    private String username;    private  double leftMoney;    public User(String username, double leftMoney) {        this.username = username;        this.leftMoney = leftMoney;    }    public User(){    }    public String getUsername() {        return username;    }    public void setUsername(String username) {        this.username = username;    }    public double getLeftMoney() {        return leftMoney;    }    public void setLeftMoney(double leftMoney) {        this.leftMoney = leftMoney;    }    public void show(){        System.out.println("用户名："+username+"钱为"+leftMoney);    }}

package com.jou.money;import java.util.ArrayList;import java.util.Random;public class QunZhu extends User{    public QunZhu(){    }    public QunZhu(String user_name,double qian){        super(user_name,qian);    }    public ArrayList
   
     send(double money,int count ){        double leftmoney=getLeftMoney();        if(money>leftmoney){            System.out.println("余额不足");            return null;        }        setLeftMoney((leftmoney-money));        ArrayList
    
      list_evermoney=new ArrayList<>();//        double a=(double)Math.round(money*100/count)/100;        double[] a=new double[count];        Random r=new Random();        double left_money=money;        int remmber_i=0;        for (int i = 0; i < count; i++) {            left_money-=a[remmber_i];            if(i==count-1){                a[i]=Math.round(left_money*100)/100;                break;            }            a[i]=Math.round(r.nextDouble()*left_money*100);            a[i]/=100;            remmber_i=i;        }        for (int i = 0; i 
    
   

package com.jou.money;import javax.xml.crypto.dom.DOMCryptoContext;import java.util.ArrayList;import java.util.Random;public class Member extends User {    public Member(){}    public Member(String username, double leftMoney){        super(username,leftMoney);    }    public void  get_money(ArrayList
   
     list){        Random r =new Random();        int a=r.nextInt(list.size());        Double money=list.remove(a);        setLeftMoney(money);    }}
   

package com.jou.money;import java.util.ArrayList;public class test {    public static void main(String[] args) {        QunZhu q=new QunZhu("hostA",100);        ArrayList
   
     sz=q.send(80,3);        Member m1=new Member("aaa",0);        Member m2=new Member("bbb",0);        Member m3=new Member("ccc",0);        m1.get_money(sz);        m2.get_money(sz);        m3.get_money(sz);        System.out.println(m1.getLeftMoney()+m2.getLeftMoney()+m3.getLeftMoney());        m1.show();        m2.show();        m3.show();        q.show();    }}
   

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