java写啤酒问题

java写啤酒问题

 public static int totalNumber; // 总酒数
    public static  int lastBottlesNumber;
    public  static  int lastCoverNumber;
    public  static  int lastMoney;
    public static void main(String[] args) {
        // 一个啤酒2元，2个空瓶换一瓶，四个瓶盖换一个。问10元能喝几瓶
        buy(9);
    }
    public static void buy(int money){
        // 1 花钱买
        int buyNumber = money/2;
        lastMoney = money%2;
        totalNumber += buyNumber;
        // 2,把盖子和空瓶继续换酒
        // 计算本轮剩余盖子和空瓶 换算成钱
        int allBotters = lastBottlesNumber+buyNumber;
        int allCovers = lastCoverNumber+buyNumber;
        int allMoney =0;
        if(allBotters>=2){
            allMoney += (allBotters/2)*2;
        }
        lastBottlesNumber=allBotters%2;
        if (allCovers>=4){
            allMoney+=((allCovers)/4)*2;
        }
        lastCoverNumber = allCovers%4;
        allMoney+=lastMoney;
        if (allMoney>=2){
            buy(allMoney);
        }else{
            System.out.println("可买的酒数量："+totalNumber);
            System.out.println("剩余空瓶数："+lastBottlesNumber);
            System.out.println("剩余盖子数："+lastCoverNumber);
        }
    }