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CodingPerplexityLast reported August 2025Low Frequency
Reported
1× across candidate reports
First seen
August 2025
Last reported
August 2025
Also asked in
Phone Screen
Reported outcome
unknown

Problem Overview

The round is one class with three methods, asked on a Perplexity phone screen. The report gives the three signatures and two rules, and a reply points out it is the same question OpenAI asks. The window semantics, worked example, and error behavior below come from that OpenAI twin, which…

  • 4 candidate-reported follow-ups — the exact probes interviewers asked, with the trigger for each
  • The rest of the problem statement — full requirements, constraints, and edge cases
  • Approach and trade-offs — what passing candidates did, and the mistakes that sink people
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Verified Source
Every question is reconstructed from multiple independent candidate reports. Verbatim follow-ups, not invented ones.
Codex Fact-Checked
Technical claims, formulas, and scale numbers are reviewed against primary sources.
Interviewer Follow-ups
The exact follow-ups reported by candidates, with the trigger that prompts each one — plus the mistakes that sink people.
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