摘要：
Design a data structure that supports the following two operations: search(word) can search a literal word or a regular expression string containing o 阅读全文
摘要：
Implement a trie with insert, search, and startsWith methods. Note:You may assume that all inputs are consist of lowercase letters a-z. 阅读全文
摘要：
Given s1, s2, s3, find whether s3 is formed by the interleaving of s1 and s2. For example,Given:s1 = "aabcc",s2 = "dbbca", When s3 = "aadbbcbcac", ret 阅读全文