Palindrome Number

class Solution {
public:
    bool isPalindrome(int x) {
        if(x < 0) {
            return false;
        }
        int m = x;
        int y = 0;
        while(m) {
            y = y * 10 + m % 10;
            m /= 10;
        }
        return x == y;
    }
};