High-Yield Archify Architecture Diagrams
Every critical Apple interview problem is modeled into an interactive Archify architecture & data-flow diagram. Visually memorize pointer rewiring, concurrency lock boundaries, CPU schedule frames, and dependency DAG resolution.
Data Structure Design & Concurrency
Master: LRU Cache (#146), Hit Counter (#362), Bounded Blocking Queue. Explain why ReadWriteLock fails for get().
Recent 30D Apple High-Freq & Graph
Memorize geometry: Task Scheduler (#621), Is Graph Bipartite? (#785), Course Schedule (#207), TimeMap (#981).
Fast Screening, Pointers & Intervals
Rapid reflex: Two Sum (#1), 3Sum (#15), Merge Intervals (#56), Reverse Linked List (#206). Zero boundary bugs.