Trie (Prefix Tree) Study Guide

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Basic Trie Operations

Fundamental problems that introduce the concept and basic usage of Tries.

• 🟨 208. Implement Trie (Prefix Tree) [Solution]
• 🟨 211. Design Add and Search Words Data Structure

Advanced Trie Applications

Problems that demonstrate more complex uses of Tries in string processing and manipulation.

• 🟨 139. Word Break [Solution]
• 🟨 648. Replace Words [Solution]

System Design with Tries

Problems that involve using Tries in larger system designs or more complex data structures.

• 🟥 588. Design In-Memory File System

Problem Difficulty Legend

• 🟩 Easy
• 🟨 Medium
• 🟧 Medium-Hard
• 🟥 Hard
• ⬛ Very Hard

Additional Resources

• Trie Data Structure (Video)
• Implementing a Trie in Python
• Trie Applications and Use Cases