Solve substring and top‑K pair problems

Company: LinkedIn

Role: Software Engineer

Category: Coding & Algorithms

Difficulty: medium

Interview Round: Onsite

Quick Answer: This multi-part question evaluates algorithm design and data-structure proficiency across string processing (minimum window substring), pair-selection for top‑k products, and LRU cache design with concurrency considerations, situating it in the Coding & Algorithms and Systems/Concurrency domains.