- Problem Number: 9
- Problem Link: https://leetcode.com/problems/palindrome-number/
- Difficulty: Easy
- Topics: Math
Given an integer x, return true if x is a palindrome, and false otherwise.
A palindrome is a number that reads the same forwards and backwards.
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
Could you solve it without converting the integer to a string?
Beware of overflow when you reverse the integer.