9. Palindrome Number

public class Solution {
    public boolean isPalindrome(int x) {
        if(x < 0){
            return false;
        }
        int xCopy = x;
        int mul = 1;
        while(xCopy/10 > 0){
            mul *= 10;
            xCopy /= 10;
        }
        while(x > 0){
            int h = x / mul;
            int l = x % 10; 
            if(h != l){
                return false;
            }
            x = x % mul;
            x = x / 10;
            mul /= 100;
        }
        return true;
    }
}