Top 50 class structure Interview Questions
The most frequently asked class structure questions across all roles and companies, ranked by real interview frequency. Updated daily.
Design the object-oriented classes and high-level architecture for a parking lot system.
Design a personalized notification system that selects, ranks, and delivers the right pushes while controlling spam and latency.
Reddit
Cisco Restaurant + Bar
LinkedInDesign BookMyShow as an object-oriented system, defining entities, interfaces, methods, and database choices.
Microsoft
Roku
MyntraDesign an O(1) LRU cache with hashmap lookup and doubly linked list eviction.
SprinklrDDruvaDesign an ML driven coupon personalization system that selects and serves promotional offers across user journeys.
SwiggyTTesco
ZomatoChoose a correct, efficient parking spot allocation strategy and explain its data structures, constraints, and failure handling.
American Airlines
UberDesign a reference-counted class that manages model loading, inference, and unloading from GPU memory.
DeepgramDesign an inherited class hierarchy that tracks total and per-subclass instance counts.
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