微信红包程序 java

package test;

import java.math.BigDecimal;

import java.util.HashMap;

import java.util.Iterator;

import java.util.Map;

import java.util.Map.Entry;

import java.util.Random;

import java.util.Set;

public class test {

public static void main(String[] args) {

int money = 1500;//红包金额

int people = 11;//参与人数

if(people >money){

System.out.println("红包金额必须大于等于参与人数");

}else{

System.out.println("红包金额:"+(money/100)+"元,参与人数:"+people);

int index = 1;

Map<String, String> map = new HashMap<String, String>();

while(true){

int f1 =0;

if(people == money){

f1 = 1;

}else{

while(true){

f1 =(int)(Math.random()* money);

// System.out.println(f1+"/"+people+"/"+money);

if(f1 > 0 && people <= (money-f1)){

break;

}

}

}

// System.out.println("随机数:"+f1+"/当时的钱:"+money+"/当时的人数:"+people);

if(people > 2){

money = money- f1;

people = people-1;

// System.out.println(money+"/"+people);

map.put((index++)+"", f1+"");

}else if(people == 2){

money = money- f1;

people = people-1;

// System.out.println(money+"/"+people);

map.put((index++)+"", f1+"");

map.put((index++)+"", money+"");

break;

}else if(people == 1){

map.put((index++)+"", money+"");

break;

}

}

int i=0 ;

index =1 ;

for (Entry<String,String> string : map.entrySet()) {

i=i+Integer.parseInt(string.getValue());

System.out.println("当前第"+(index++)+"人,抢到的红包金额为:"+(Double.valueOf(string.getValue())/100)+"元");

}

System.out.println("总金额:"+(i/100)+"元");

}

}

}