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Design Add and Search Words Data Structure

Explore how to design and implement a WordDictionary using a trie structure that allows you to add new words, search words with support for wildcard queries, and retrieve all stored words. Understand how to handle search queries containing dots representing any letter and practice solving this pattern to develop efficient string storage and search techniques.

Statement

Design a data structure that enables the addition of new words, facilitates word search, and provides the count of all words.

Implement a struct, WordDictionary, which should ...