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Implement Trie (Prefix Tree)

Understand how to implement a trie, also known as a prefix tree, to efficiently manage string operations. This lesson guides you through writing functions to insert words, search for complete words, and check prefixes in the trie, preparing you for common coding interview challenges involving efficient string matching.

Statement

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 ...