Matching Contacts

Phone-screen coding task. Match contacts to people by email domain, then filter and rank the matches by each person's stated preferences. A long, verbose prompt where reading speed is the main constraint. Requirements Input is read from stdin — practice the read/parse boilerplate ahead of time. Part 1: match each contact to a person by email domain. Part 2: for each person, filter and sort the matched contacts according to that person's preferences. Part 3 (reported, not always reached): support wildcard matching in the rules. Notes A new prompt as of mid-2026; earlier community mentions carried no detail. Stripe's house style applies — the prompt is long and verbose, and candidates who haven't seen it rarely finish in time (one candidate completed only Part 2). The three parts escalate; budget reading time accordingly. Preparation Drill stdin parsing in your language: read lines, split fields, build records. Pre-write a group-by-domain helper (dict keyed by email domain) and a stable multi-key sort so the Part 2 ranking is fast to assemble.