假设有50瓶饮料，

import java.util.Scanner;/*假设有50瓶饮料， * 喝完3个空瓶可以换一瓶饮料， * 依次类推，请问总共喝了多少瓶饮料？*/public class Beverage {private int BeverageNum(int n){int num = 0;int surplus = n;while(surplus > 2){surplus -= 3;num += 3;surplus++;}num = num + surplus;return num;}public static void main(String[]args){System.out.println("您现在饮料的数量:N=");Scanner in = new Scanner(System.in);int n = in.nextInt();Beverage b = new Beverage();int m = b.BeverageNum(n);System.out.println("您一共可以喝"+m+"瓶饮料!");}}