统计每个月兔子的总数

import java.util.Scanner;public class GetRabbitNum {public static void main(String[] args) {// TODO Auto-generated method stubScanner scan = new Scanner(System.in);int num = scan.nextInt();int result = fun(num);System.out.println(result);}private static int fun(int num) {if(num==0)return 0;else if(num ==1)return 1;elsereturn fun(num-1)+fun(num-2);}}