Implement Trie (Prefix Tree)

Understand how to implement a trie or prefix tree to store strings efficiently. Learn to build functions for inserting words, searching complete words, and checking prefixes. This lesson helps you master the trie structure for fast string operations used in coding interviews.

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Trie is a tree-like data structure used to store strings. The tries are also called prefix trees because they provide very efficient prefix-matching operations. Implement a trie data structure with three functions that perform the following tasks:

Insert (word): This inserts a word into the trie.
Search (word): This searches the given word in the trie and returns TRUE if the complete word is found (i.e., all characters match and the last node is marked as the end of a word). Otherwise, return FALSE.
Search prefix (prefix): This searches the given prefix ...