HackerEarth Interview Questions
The questions to prepare for HackerEarth interviews, across all roles. Questions from real interview reports rank first. Updated daily.
Compute the GCD of two signed integers with up to 100,000 digits using string arithmetic and Euclid's algorithm.
Handle client objections by diagnosing the real concern, re-anchoring on value, and advancing the deal.
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Explain INNER, LEFT, RIGHT, FULL OUTER, CROSS, and SELF JOINs with examples and when to use each.
Use PostgreSQL joins and conditional aggregation to report Adobe Campaign Classic email delivery performance.
AdobeWrite and optimize a PostgreSQL query that summarizes current enrollment activity across studies and sites.
XPO
MedpaceRank signup-month cohorts by average sessions per user and return the three highest-performing cohorts.
Unity TechnologiesExplain how you would turn feedback into a structured iteration loop without losing focus, alignment, or delivery momentum.
Assesses ability to propose UX features that improve engagement on HackerEarth.
Assesses system design and architecture for an interactive game.
Assesses your problem-solving reasoning relevant to writing clear technical explanations at HackerEarth.
Evaluates data-informed UX decision-making and measurement strategy.