Description
Problem
Given an integer x, return true if x is palindrome integer. An integer is a palindrome when it reads the same backward as forward.
Examples
Example 1:
Input: x = 121Output: trueExplanation: 121 reads as 121 from left to right and from right to left.
Example 2:
Input: x = -121Output: falseExplanation: From left to right, it reads -121. From right to left, it becomes 121-. Therefore it is not a palindrome.
Constraints
-2³¹ ≤ x ≤ 2³¹ - 1
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