Given an array and a target, find two indices that sum to the target — Coinbase interview
Reported in Coinbase USA engineering loops. Classic array + hash map problem testing optimal time–space trade-offs.
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Reported in Coinbase USA engineering loops. Classic array + hash map problem testing optimal time–space trade-offs.
Reported in Coinbase USA engineering loops. Foundational search algorithm with clear loop invariants and edge cases.
Reported in Coinbase USA engineering loops. Pointer manipulation staple for junior coding interviews.
Reported in Coinbase USA engineering loops. Graph traversal question covering shortest paths, connectivity, and complexity.
Reported in Coinbase USA engineering loops. Tree recursion warm-up that often leads to balanced-tree and diameter follow-ups.
Reported in Coinbase USA engineering loops. Sliding window pattern for substring problems with hash set or map tracking.
Reported in Coinbase USA engineering loops. Sort-and-sweep array problem common in calendar and scheduling interviews.
Reported in Coinbase USA engineering loops. HR negotiation question requiring research and flexible framing.
Reported in Coinbase USA engineering loops. SQL performance question covering B-trees, composite indexes, and trade-offs.
Reported in Coinbase USA engineering loops. Security and networking question covering encryption, certificates, and performance.
Reported in Coinbase USA engineering loops. Recruiter or HR question about logistics, time zones, and loop structure.