Palindrome Number🎙

  • For example, 121 is a palindrome while 123 is not.
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.
  • -231 <= x <= 231 - 1

Java Solution

Three different solutions with three different time complexities

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