package com.das.controller;
import java.util.Random;
public class Test {
    public static void main(String[] args) {
        RedPackage redPackage = new RedPackage();
redPackage.remainSize  = 3;
redPackage.remainMoney = 50;
        for(int i=0;i<3;i++) {
            System.out.println(getRandomMoney
 
(redPackage));
}
    }
      public static double getRandomMoney(RedPackage _redPackage) {
          // remainSize 剩餘的紅包數量
         // remainMoney 剩餘的錢
if (_redPackage.remainSize == 1) {
                _redPackage.remainSize--;
                 return (double) Math.round(_redPackage.remainMoney * 100) / 100
 
;
}
            Random r     = new Random();
            double min   = 0.01; //
double max   = _redPackage.remainMoney / _redPackage.remainSize * 2;
             double money = r.nextDouble() * max;
money = money <= min ? 0.01: money;
money = Math.floor(money * 100) / 100;
_redPackage.remainSize--;
_redPackage.remainMoney 
 
-= money;
             return money;
}
}