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 ...

// Given an integer x, return true if x is a palindrome, and false otherwise. // Explanation: From left to right, it reads -121. From right to left, it becomes 121-. Therefore it is not a palindrome.