Trie practice problems

A focused problem list tied to the real-world applications on this topic. Open any problem directly on its platform.

4 problems List view Mobile optimized

Why this page exists

The main topic page explains where the idea is used in production. This child page is only for practice.

Trie practice

4 items

Implement Trie (Prefix Tree)

The baseline insert and search implementation problem.

Design Add and Search Words Data Structure

Trie design extended with wildcard lookup.

Word Search II

Backtracking plus trie pruning to scale dictionary matching.

Replace Words

A compact trie use case for prefix replacement.