兔子繁殖问题Java实现

//RubbitNum.java
package cn.campsg.java.experiment;

import java.util.Scanner;

public class RabbitNum {
    public static void main(String[] args) {
        System.out.println("请输入兔子繁殖的月份：");
        Scanner in=new Scanner(System.in);
        int month=in.nextInt();
        in.close();
        int num=rabbit(month);
        System.out.println("第" + month + "个月，兔子数量是：" +num );
    }
    public static int rabbit(int month) {
        int CNR=2;
        int LNR=2;
        int TNR=2;
        for(int i=2;i<month;i++) {
            if(month<=2) {
                continue;
            }
            else {
                CNR=LNR+TNR;
            }
            TNR=LNR;
            LNR=CNR;
        }
        return CNR;

    }
}