Given an integer
x is a
Input: x = 121 Output: true Explanation: 121 reads as 121 from left to right and from right to left.
Input: x = -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: x = 10 Output: false Explanation: Reads 01 from right to left. Therefore it is not a palindrome.
-231 <= x <= 231 - 1
Follow up: Could you solve it without converting the integer to a string?