0009-palindrome-number.py

class Solution:
    def isPalindrome(self, x: int) -> bool:
        if x < 0: return False
        
        div = 1
        while x >= 10 * div:
            div *= 10
            
        while x:
            right = x % 10
            left = x // div
            
            if left != right: return False
            
            x = (x % div) // 10
            div = div / 100
        return True