Module leetcode_rust::problems::p000_0xx::p000_009

Problem #9 Palindrome Number

Description

Given an integer x, return true if x is a palindrome, and false otherwise.

Example 1:

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 to left, it becomes 121-. Therefore it is not a palindrome.

Example 3:

Input: x = 10
Output: false
Explanation: Reads 01 from right to left. Therefore it is not a palindrome.

Constraints:

$-2^{31} \leqslant x \leqslant 2^{31} - 1$

Follow up: Could you solve it without converting the integer to a string?

Source: https://leetcode.com/problems/palindrome-number/

Functions

is_palindrome

Check if a given input is a palindrome number