File Systems OA (Multi-Part)

OAAnthropicLast reported May 2026Medium Frequency
Reported
8× across candidate reports
First seen
July 2025
Last reported
May 2026
Reported outcome
mixed

Problem Overview

A multi-part coding assessment centered on file system topics. Based on reports, the OA contains at least 3 progressive sub-problems related to file system design and implementation. One confirmed theme is file deduplication: given a directory (and potentially nested subdirectories), identify and remove duplicate files using hashing. The OA is…

  • 3 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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