递归的笨比

package com.nbuf;
import java.util.Scanner;
public class DemoScanner {
    public static int judge(int num){
        if(num>1){
            if(num==1){
                return num;
            }else {
                num--;
                num=judge(num);
            }
        }else if(num<1){
            if(num==1){
                return num;
            }else {
                num++;
                num=judge(num);
            }

        }else {
            return num;
        }
        return num;
    }
    public static void main(String[] args) {
            Scanner scanner=new Scanner(System.in);
            System.out.print("请输入 一个整数：");
             int num=scanner.nextInt();
             int num1=judge(num);
            System.out.println(num1);
            scanner.close();


    }
}