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Problem Challenge: Search Auto-Complete Optimized

Explore how to design an optimized search auto-complete system using trie data structures. Understand how to quickly retrieve the top three lexicographically smallest keyword suggestions matching the query prefix as it is typed. This lesson guides you through implementing efficient prefix-based search features common in modern search engines.

We'll cover the following...

Problem statement

We're provided with a list of keywords and a query string. Design a system that provides the top three suggestions from the keyword list to the user every time the user types a character of the query string.

The suggested words should be a prefix of the query string typed so far. If there are more ...