微信紅包程式 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;//紅包金額

       int people = 11;//參與人數

       if(people >money){

           System.out.println("紅包金額必須大于等于參與人數");

       }else{

           System.out.println("紅包金額:"+(money/100)+"元,參與人數:"+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("随機數:"+f1+"/當時的錢:"+money+"/當時的人數:"+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("目前第"+(index++)+"人,搶到的紅包金額為:"+(Double.valueOf(string.getValue())/100)+"元");

           }

            System.out.println("總金額:"+(i/100)+"元");

       }

   }

}