Palindrome Number

Given an integer x, return true if x is a palindrome, and false otherwise.

Example 1:

      Input: x = 121
      Output: true
      Explanation: 121 reads as 121 from left to right 
      and from right to left.
      

Example 2:

      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.
      

Example 3:

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

Constraints:

• -2³¹ <= x <= 2³¹ - 1