[LeetCode] Valid Palindrome 驗證回文字符串
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example, "A man, a plan ...
原文：[LeetCode] Valid Parenthesis String 驗證括號字符串
Given a string containing only three types of characters: , and , write a function to check whether this string is valid. We define the validity of a string by these rules: Any left parenthesis must ...
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LeetCode 6.判斷字符串中的括號是否對稱
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驗證回文字符串（leetcode）
題目描述如下： 給定一個字符串，驗證它是否是回文串，只考慮字母和數字字符，可以忽略字母的大小寫。 說明：本題中，我們將空字符串定義為有效的回文串。 示例 1: 示例 2: class Solution { public: bool isPalindrome ...