Palindrome Number
Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward. Example 1 Input: 121 Output: true Example 2 Input: -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: 10 Output: false Explanation: Reads 01 from right to left. Therefore it is not a palindrome.