Lightning Talk: How to Win at Coding Interviews
summary
A concrete three-step protocol claims five minutes of prep suffices: repeat the question, write the interface, then use a hashmap for most problems. The claim is quantified as 85 to 90 percent coverage; remaining cases require known algorithms like Boyer–Moore or std::algorithm. Examples show hashmaps producing easy O(N) time and O(N) space answers, give interfaces (span in, vector out or in-place), and demonstrate when to switch to set/sort or expert-only linear‑time tricks.
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