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642 questions in the library. A source association does not guarantee a future interview question.
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Showing 26–50
Companies: OpenAI
Containers & Orchestration · System Design · System Design Fundamentals
Last reported Oct 2026
Companies: OpenAI
Data Structure Design · Graphs
Last reported Oct 2026
Companies: OpenAI
Data Structure Design
Last reported Oct 2026
Companies: OpenAI
Data Structure Design
Last reported Oct 2026
Companies: OpenAI
Ethics & Responsibility · Leadership & Influence
Last reported Oct 2026
Companies: OpenAI
Fault Tolerance & Failover · Multiplayer Game Systems · System Design
Last reported Oct 2026
Companies: OpenAI
Data Structure Design · Stacks & Queues
Last reported Oct 2026
Companies: OpenAI
Distributed Coordination · Multiplayer Game Systems · System Design
Last reported Oct 2026
Companies: OpenAI
Data Structure Design · Graphs
Last reported Oct 2026
Companies: OpenAI
Data Structure Design · Graphs
Last reported Oct 2026
Companies: OpenAI
Last reported Oct 2026
Companies: OpenAI
Dynamic Programming
Last reported Oct 2026
Design a system that tracks user token credits and can efficiently query the number of tokens a user has at any given timestamp. The service…
Companies: OpenAI
Last reported Oct 2026
Design a real-time multiplayer quiz game where participants compete to select the correct answer as quickly as possible, with the fastest correct responder winning each…
Companies: OpenAI, Amazon
Last reported Oct 2026
Design a payment system that processes transactions through an external payment service for approval/denial, holds approved amounts, and batches all transactions daily for…
Companies: OpenAI, Adyen, Agoda, Amazon +5
Last reported Oct 2026
Companies: OpenAI
Graphs
Last reported Oct 2026
Companies: OpenAI
Simulation & State Machines
Last reported Oct 2026
Companies: OpenAI
Data Structure Design · Memory Management
Last reported Oct 2026
Companies: OpenAI
Graphs
Last reported Oct 2026
Companies: OpenAI
Observability · Storage & Sharding · System Design
Last reported Oct 2026
Implement a thread-safe bounded FIFO queue with a fixed capacity that supports enqueue (blocks when full), dequeue (blocks when empty), and size operations. The core…
Companies: OpenAI
Last reported Oct 2026
Implement algorithms to simulate and analyze the spread of disease through flowers arranged in a grid structure. Solve multiple related problems involving infection patterns…
Companies: OpenAI
Last reported Oct 2026
Companies: OpenAI
Concurrency · Data Structure Design
Last reported Oct 2026
Implement an iterator that traverses IPv4 addresses starting from a given address, supporting forward iteration, reverse iteration, and CIDR block iteration.
Companies: OpenAI, Anthropic
Data Structure Design · Networking
Last reported Oct 2026
Companies: OpenAI
Last reported Oct 2026