9. Palindrome Number

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

 

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