Design a data structure that supports the following two operations: void addWord(word) bool search(word) search(word) can search a literal word or a regular expression string containing only letters a-z or .. A . means it can represent any one letter…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 公众号:负雪明烛 本文关键词:Leetcode, 力扣,211,搜索单词,前缀树,字典树,Trie,Python, C++, Java 目录 题目描述 题目大意 解题思路 从二叉树说起 前缀树 构建 查询 应用 代码 刷题心得 日期 题目地址:https://leetcode.com/problems/add-and-search-word-data-structure-design/…

Design a data structure that supports the following two operations: void addWord(word) bool search(word) search(word) can search a literal word or a regular expression string containing only letters a-z or .. A . means it can represent any one letter…

设计一个支持以下两个操作的数据结构:void addWord(word)bool search(word)search(word) 可以搜索文字或正则表达式字符串,字符串只包含字母 . 或 a-z . . 意味着它可以代表任何一个字母.例如:addWord("bad")addWord("dad")addWord("mad")search("pad") -> falsesearch("bad") -&g…

设计一个支持以下两种操作的数据结构: void addWord(word) bool search(word) search(word) 可以搜索文字或正则表达式字符串,字符串只包含字母 . 或 a-z . . 可以表示任何一个字母. 示例: addWord("bad") addWord("dad") addWord("mad") search("pad") -> false search("bad"…

Design a data structure that supports the following two operations: void addWord(word) bool search(word) search(word) can search a literal word or a regular expression string containing only letters a-z or .. A . means it can represent any one letter…

Design a data structure that supports the following two operations: void addWord(word)bool search(word) search(word) can search a literal word or a regular expression string containing only letters a-z or .. A . means it can represent any one letter.…

Design a data structure that supports the following two operations: void addWord(word) bool search(word) search(word) can search a literal word or a regular expression string containing only letters a-z or .. A . means it can represent any one letter…

https://leetcode.com/problems/add-and-search-word-data-structure-design/ 本题是在Trie树进行dfs+backtracking操作. Trie树模板代码见:http://www.cnblogs.com/fu11211129/p/4952255.html 题目介绍: Design a data structure that supports the following two operations: void addWord…

题目链接 写一个数据结构, 支持两种操作. 加入一个字符串, 查找一个字符串是否存在.查找的时候, '.'可以代表任意一个字符. 显然是Trie树, 添加就是正常的添加, 查找的时候只要dfs查找就可以. 具体dfs方法看代码. struct node { node *next[]; int idEnd; node() { memset(next, NULL, sizeof(next)); idEnd = ; } }; class WordDictionary { public: // Adds…