算法-经典趣题-兔子产仔

package com.joshua317;

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        int n, num;
        Fibonacci fibonacci = new Fibonacci();
        System.out.println("兔子产仔问题：");
        System.out.println("请先输入经过的月份：");
        Scanner scanner = new Scanner(System.in);
        n = scanner.nextInt();
        num = fibonacci.Fibonacci(n);
        System.out.printf("经过%d月，共能繁殖成%d对兔子\n", n, num);
    }
}

class Fibonacci {
    public int Fibonacci(int n)
    {
        int n1, n2;
        if (n ==1 || n == 2) {
            return 1;
        } else {
            n1 = Fibonacci(n-1);
            n2 = Fibonacci(n-2);
            return n1 + n2;
        }
    }
}