#9 Palindrome Number

最新推荐文章于 2020-02-20 18:36:59 发布

原创最新推荐文章于 2020-02-20 18:36:59 发布 · 584 阅读

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本文探讨如何在不使用额外空间的情况下，判断整数是否为回文数，提供了一些提示来帮助理解问题，并介绍了几种解决方法。

题目链接：https://leetcode.com/problems/palindrome-number/

Determine whether an integer is a palindrome. Do this without extra space.

click to show spoilers.

Some hints:

Could negative integers be palindromes? (ie, -1)

If you are thinking of converting the integer to string, note the restriction of using extra space.

You could also try reversing an integer. However, if you have solved the problem "Reverse Integer", you know that the reversed integer might overflow. How would you handle such case?

There is a more generic way of solving this problem.

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