[LeetCode]9. Palindrome Number

https://leetcode.com/problems/palindrome-number/

负数直接返回false；回文不要只考虑双指针，直接逆序啊！！！！

这个题直接逆序和原数比较，字符串回文也可以reverse。这个题里面用双指针很复杂！！

public class Solution {    public boolean isPalindrome(int x) {        if (x < 0) {            return false;        }        int rev = 0;        int num = x;        while (num != 0) {            rev = rev * 10 + num % 10;            num /= 10;        }        return x == rev;    }}