自己写的发红包小李子

最新推荐文章于 2025-03-19 00:35:26 发布

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本文介绍了一种模拟微信红包随机分配的算法实现。通过Java语言编程，该算法能够将指定金额随机分配给多个用户，同时确保每个红包金额合理且总额准确无误。

package com.loveit.base;


import java.util.Random;


public class weixin_hongbao {


	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		int total_people = 6;
		double total_money = 66;
		RedPackage red = new RedPackage(total_people, total_money);
		double total =0.00;
		while(red.total_people > 0){
			double money ;
			System.out.println("��"+(Math.abs(total_people-red.total_people)+1)+"�ˣ�����Ǯ��"+ (money = getRandomNumber(red)));
			total = Arith.add(total, money);
		}
		System.out.println("�ܵĽ�"+total);
	}
	
	public static double getRandomNumber(RedPackage _RedPackage){
		Random random = new Random();
		if(_RedPackage.total_people == 1){
			_RedPackage.total_people --;
			return (double)Math.round(_RedPackage.total_money*100)/100;
		}
		double min = 0.01;
		double max = _RedPackage.total_money/_RedPackage.total_people*2;
		double money = random.nextDouble()*max;
		money = money < min? 0.01 : money;
		money = Math.floor(money*100)/100;
		_RedPackage.total_money -= money;
		_RedPackage.total_people --;
		return money;
	}
}


class RedPackage{
	public int total_people;
	public double total_money;
	
	public RedPackage(int people,double money){
		this.total_people = people;
		this.total_money = money;
	}
}