LeetCode 9. Palindrome Number

题目描述

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

题目解析

注意负数不是回文数；

代码

class Solution {public:    bool isPalindrome(int x) {        if(x==0)        {            return true;        }        if(x<0||x%10==0)        {            return false;        }        long long conv=0,temp=x;        while(temp)        {            conv = conv*10 + temp%10;            temp/=10;        }        if(conv == x)        {            return true;        }        return false;    }};