Algorithm · Citadel · Hard
Unmatched Trade Records Medium · Topics · Company Tags · Hints You are given a list of $$n$$ trade records. Each record represents a completed fill on either the buy side or the sell side. Your task is to simulate a reconciliation process and report the identifiers of every record that remains unmatched at the end. A record contains the following fields: id – a unique, whitespace‑free string identifier timestamp – an integer timestamp in microseconds symbol – a ticker symbol…
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