"""
Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward.

Example 1:

Input: 121
Output: true
Example 2:

Input: -121
Output: false
Explanation: From left to right, it reads -121. From right to left, it becomes 121-. Therefore it is not a palindrome.
Example 3:

Input: 10
Output: false
Explanation: Reads 01 from right to left. Therefore it is not a palindrome.
"""


class Solution:
    def isPalindrome(self, x):
        """
        :type x: int
        :rtype: bool
        """

        if x < 0:
            return False

        x_org = x
        reverse_num = 0
        while x > 0:
            digit = x % 10
            x = x // 10
            reverse_num = reverse_num * 10 + digit
        if reverse_num == x_org:
            return True
        else:
            return False


if __name__ == "__main__":

    test = Solution()
    print(test.isPalindrome(121))
    print(test.isPalindrome(-121))
    print(test.isPalindrome(10))