Given an array and a target, find two indices that sum to the target — Improbable interview
Reported in Improbable European engineering loops. Classic array + hash map problem testing optimal time–space trade-offs.
Interview atlas
Explore 2,994 curated Q&As across 124 employers — filter by career stage, round, or company.
Reported in Improbable European engineering loops. Classic array + hash map problem testing optimal time–space trade-offs.
Reported in Graphcore European engineering loops. Behavioral question testing communication across time zones, languages, and cultures.
Reported in Graphcore European engineering loops. Design pattern comparison frequently asked in OOD interviews.
Reported in Graphcore European engineering loops. OOD pattern question focused on replacing condition-heavy logic.
Reported in Graphcore European engineering loops. DevOps observability basics with practical incident response context.
Reported in Graphcore European engineering loops. Cloud fundamentals question about storage trade-offs.
Reported in Graphcore European engineering loops. Container optimization question for build speed and security.
Reported in Graphcore European engineering loops. Laravel framework operations question for robust async processing.
Reported in Graphcore European engineering loops. Framework-specific optimization question for reducing N+1 queries.
Reported in Graphcore European engineering loops. TypeScript interview topic focused on maintainable type composition.
Reported in Graphcore European engineering loops. Language-level design trade-offs often asked in Java interviews.
Reported in Graphcore European engineering loops. Behavioral prompt for coachability and growth mindset.
Reported in Graphcore European engineering loops. HR question testing judgment under pressure and planning discipline.
Reported in Graphcore European engineering loops. Pattern recognition question for linear-time array scans.
Reported in Graphcore European engineering loops. Dynamic programming optimization with unbounded choices.