1 package com.li.FiftyAlgorthm;
 2 
 3 import java.util.Scanner;
 4 
 5 /**
 6  * 题目：一个5位数，判断它是不是回文数。即12321是回文数，个位与万位相同，十位与千位相同。
 7  * @author yejin
 8  */
 9 public class Palindrom {
10     public static void main(String[] args) {
11         Scanner s = new Scanner(System.in);
12         System.out.print("请输入一个正整数：");
13         long a = s.nextLong();
14         String ss = Long.toString(a);
15         char[] ch = ss.toCharArray();
16         boolean is = true;
17         int j = ch.length;
18         for (int i = 0; i < j / 2; i++) {
19             if (ch[i] != ch[j - i - 1]) {
20                 is = false;
21             }
22         }
23         if (is == true) {
24             System.out.println("这是一个回文数");
25         } else {
26             System.out.println("这不是一个回文数");
27         }
28     }
29 }