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187 questions in the library. A source association does not guarantee a future interview question.
Behavioral and leadership · Coding · Machine learning · ML system design · Other questions · System design
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Showing 76–100
Design a system that allows users to schedule events and processes them at specified times. Focus on the event staging architecture, including how events are…
Companies: Apple, Anyscale, Cursor, DoorDash +2
Last reported Jan 2026
Companies: Apple
System Design
Last reported Jan 2026
Companies: Apple
Last reported Jan 2026
Companies: Apple
System Design
Last reported Jan 2026
Implement an LRUCache that supports O(1) average-time get(key) returning the value or -1 and put(key, value) which inserts or updates a key and, if capacity…
Companies: Apple, Adobe, Amazon, Anthropic +29
Data Structure Design · Design · Doubly-Linked List · Hash Table
Last reported Jan 2026
Companies: Apple, Amazon, Capital One, Fusion Health +3
Last reported Jan 2026
Design a system that allows users to create, store, and retrieve Facebook posts efficiently, handling features like post creation, storage, and retrieval at scale.
Companies: Apple, Amazon, Yuzu.Health
Last reported Jan 2026
Design and implement a task queue system that manages tasks with ID, priority, and command properties, supporting operations to add tasks, retrieve highest priority tasks…
Companies: Apple
Last reported Dec 2025
Companies: Apple
System Design
Last reported Dec 2025
Design a mobile photos application that allows users to view, organize, and manage their photo library. Focus on the client-side app backend: how the app…
Companies: Apple
Last reported Dec 2025
Companies: Apple
System Design
Last reported Dec 2025
Companies: Apple
System Design
Last reported Oct 2025
Given a string s and integer k, repeatedly remove any run of k equal adjacent characters until no more removals are possible and return the…
Companies: Apple, Amazon, Meta, Oracle +2
Stack · String
Last reported Oct 2025
Companies: Apple
System Design
Last reported Oct 2025
Design a distributed caching system that can handle high-throughput read/write operations across multiple cores and spinning disks while ensuring data durability and leveraging…
Companies: Apple, Expedia
Last reported Sep 2025
Read-heavy key-value service: unique short-code generation, hot-key caching, redirect semantics.
Companies: Apple, Amazon, Anduril, Bending Spoons +26
API Design · caching · hot-keys · http-redirects
Last reported Sep 2025
Design a real-time event messaging system that can ingest event data (movie releases, sports events, etc.) from various sources and provide fast in-memory storage for…
Companies: Apple, CrowdStrike, Ford
Last reported Sep 2025
Manage an exam room of n seats where seat() places the next student at the index that maximizes the distance to the nearest occupied seat…
Companies: Apple
Last reported Sep 2025
Companies: Apple
System Design · System Design Fundamentals
Last reported Sep 2025
Companies: Apple
System Design
Last reported Sep 2025
Companies: Apple
System Design
Last reported Sep 2025
Implement job scheduling algorithms including both First Come First Serve (FCFS) and priority-based approaches. The solution should handle job submissions with start times, end…
Companies: Apple, Google, Netflix, Snowflake
Last reported Aug 2025
Given a list of meeting time intervals, determine the minimum number of conference rooms required so that no meetings overlap. The core challenge is computing…
Companies: Apple, Amazon, Google, Meta +9
Array · Greedy · Heap (Priority Queue) · Prefix Sum
Last reported Aug 2025
Check whether a binary tree is symmetric around its center by determining if the left and right subtrees are mirror images of each other. This…
Companies: Apple, LinkedIn, TikTok
Last reported Aug 2025