[原创]JAVA解决喝汽水问题

问题：一瓶汽水单价2.5元，四个瓶盖或者两个瓶子可以换取一瓶汽水。给定金额得出一共能喝几瓶汽水？

实现：

#cat drink.java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class drink {
    public static void main(String[] args){
        System.out.println("汽水单价为2.5元,四个瓶盖或者两个空瓶可以换取一瓶汽水。请输入您购买的金额: ");
        InputStreamReader isr = new InputStreamReader(System.in);
  		BufferedReader br = new BufferedReader(isr);
        double money = 0.0;
        try {
            money = Double.valueOf(br.readLine()).doubleValue();
        } catch (IOException e) {
            e.printStackTrace();
        }
        System.out.println("您购买汽水的金额是: " + money);
        double n = money / 2.5;
        int num = (int)n;
        int gaizi = num; 
        int kongping = num;
        while (gaizi >= 4 || kongping >= 2) {
    		int i = (gaizi / 4) + (kongping / 2);
    		num = num + i;
    		gaizi = gaizi % 4 + i;
    		kongping = kongping % 2 + i;
        }
        System.out.println("您一共可以喝到的汽水数量是: " + num + ",剩余盖子数: " + gaizi 
            + ",剩余空瓶数: " + kongping);
    }
}

效果图略。