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Given an integer x, return true if x is a palindrome, and false otherwise. Can you do this without casting to a string?
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An integer is a palindrome when it reads the same forward and backward.
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.
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