1publicbooleansearch(String word, TrieNode node,intcur,intlen) {2if(cur == len)returnnode.isEnd;3charw =word.charAt(cur);4if(w == '*') {5if(search(word, node, cur+1, len))returntrue;//'*' match zero char6for(intj=0; j<26; j++) {7if(node.sons[j] !=null) {8if(se...
}publicbooleansearchRecur(TrieNode curNode, String word,intstart){if(curNode==null){returnfalse; }if(start>=word.length()){returncurNode.hasWord; }charc =word.charAt(start);if(c=='.'){for(TrieNode child : curNode.childs)if(searchRecur(child,word,start+1)){returntrue; }returnfalse;...
Design a data structure that supports the following two operations: void addWord(word) bool search(word) 1. 2. 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. Example: addWord("bad") ad...
https://leetcode.com/problems/add-and-search-word-data-structure-design/ 同样是关于trie.只是在search的时候要dfs backtracking 参考http:///2015/07/leetcode-question-add-and-search-word.html class TrieNode: def __init__(self): self.value = 0 self.children = [None]*26 class WordDictionary:...
search("b..") -> true 解题思路: 参考之前的Java for LeetCode 208 Implement Trie (Prefix Tree)修改下即可,JAVA实现如下: publicclassWordDictionaryextendsTrie{ publicvoidaddWord(Stringword){ super.insert(word); } // Returns if the word is in the data structure. A word could ...
LeetCode 211 [Add and Search Word - Data structure design] 原题 设计一个包含下面两个操作的数据结构:addWord(word), search(word) addWord(word)会在数据结构中添加一个单词。而search(word)则支持普通的单词查询或是只包含. 和a-z的简易正则表达式的查询。一个 . 可以代表一个任何的字母。 样例 ...
node.isWord = true; } public boolean search(String word) { return helper(word, 0, root); } private boolean helper(String word, int start, TrieNode node) { if (start == word.length()) return node.isWord; char ch = word.charAt(start); ...
node.isWord = true; } // Returns if the word is in the data structure. A word could // contain the dot character '.' to represent any one letter. public boolean search(String word) { return helper(word, 0, root); } public boolean helper(String word, int pos, TrieNode node) { ...
LeetCode上的原题,请参见我之前的博客Add and Search Word - Data structure design。 classWordDictionary {public:structTrieNode {boolisLeaf; TrieNode*child[26]; }; WordDictionary() { root=newTrieNode(); }//Adds a word into the data structure.voidaddWord(stringword) { ...
再分享一个 leetcode 上边的大神@StefanPochmann的一个想法,直接利用正则表达式。 我就不细讲了,直接看代码吧,很简洁。 importreclassWordDictionary:def__init__(self):self.words='#'defaddWord(self,word):self.words+=word+'#'defsearch(self,word):returnbool(re.search('#'+word+'#',self.words)) ...