[LeetCode]9、Palindrome Number

题目描述：

Determine whether an integer is a palindrome. Do this without extra space.

思路：检测是不是回文数。将给定的数翻转即可。与第七题的思路相同，网上给的解法是从头和尾同时遍历，比较是否相等，相等则删除继续比较，直到最中间一位。

 1 public class Solution9 {
 2     public boolean isPalindrome(int x){
 3         int result = 0;
 4         int a = x;
 5         while(a>0){
 6             result = result*10+a%10;
 7             a/=10;
 8         }
 9         System.out.println(result);
10         if(result == x){
11             return true;
12         }
13         return false;
14     }
15     public static void main(String[] args) {
16         // TODO Auto-generated method stub
17         Solution9 solution9 = new Solution9();
18         System.out.println(solution9.isPalindrome(-2147483648));
19     }
20 
21 }