Coding & Algorithms (DSA)
Tries
5 practice questions. Free questions open a full answer guide; the rest unlock with Pro.
- If you were building the autocomplete for a search box, how would you use a trie to return suggestions for what the user has typed so far?
- You're building a trie that needs to support not just exact and prefix lookup but also wildcard matching, where a query like 'c.t' should match 'cat' and 'cot'. How does that change the design, and what does it cost you?Go Pro
- When would you reach for a trie instead of a hash map, and what does that choice cost you?Go Pro
- Walk me through how you'd build an autocomplete feature with a trie, including how you'd return the most relevant suggestions and scale it.Go Pro
- For an autocomplete or prefix-search feature, why might you choose a trie over a hash map, and what are the real memory and performance trade-offs you'd weigh before committing to one?Go Pro
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