class Solution{
    public: 
        bool isPalindrome(int x){
            int rev = 0;
            if(x<0 || x%10 == 0 && x!=0){
                return false;
            }
            while(x>rev){
                rev = (rev*10) + (x%10);
                x/=10;
            }
            return ( x==rev || x == rev/10);
        }
}