[9] Palindrome Number

题目

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.

**Follow up:**

Coud you solve it without converting the integer to a string?

解法

一

思路

求出回文数，进行比较

代码