Leetcode Palindrome Number

Input: 121
Output: true

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.

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
        """
        arr = []
        for s in str(x):
            arr.append(s)
        if len(arr)==0 or len(arr)==1:
            return True
        
        for i in range(len(arr)//2):
            if arr[i] !=arr[-i-1]:
                return False
        return True

class Solution:
    def isPalindrome(self, x):
        """
        :type x: int
        :rtype: bool
        """
        x_list = [i for i in str(x)]
        if x_list == x_list[::-1]:
            return (True)
        else:
            return (False)