1.喝汽水,1瓶汽水1元,2个空瓶可以换一瓶汽水, 给20元,可以多少汽水。 编程实现。 int purchase(int a){if (a > 1){int b = a / 2;int c = a % 2;return b+purchase(b + c);}else{return 0;}}int main(){int a = 20;//scanf("%d", &a);int b =
public class BuySoda {public static void main(String[] args) {BuySoda buy = new BuySoda();int num = buy.buywater(20, 0, 0);System.out.println("一共能喝" + num + "瓶汽水");}/** 创建没水的方法,传入三个参数,分别是钱,瓶盖,瓶子*/pub