package ChongXingZuo; import java.util.Scanner; public class MonkeyPeach { public static int peach(int day) { int sum; if (day == 10) { return 1; } else { sum = (peach(day + 1) + 1) * 2; // 要想知道前一天的桃子数,必须求出后一天的桃子数 } return sum; } public static void main(String[] args) { System.out.println("请输入1~10的天数:"); Scanner in = new Scanner(System.in); int day = in.nextInt(); int sum = peach(day); // 调用peach方法求解 System.out.printf("第" + day + "天桃子数为%d个n", sum); } }
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