Question/Answer/Condition Matcher (AST Composition Pattern)

CodingZipLast reported April 2026Medium Frequency
Reported
8× across candidate reports
First seen
February 2025
Last reported
April 2026
Reported outcome
mixed

Problem Overview

Given an existing codebase (framework provided in Python or Java) representing a form/survey system with multiple question/field types (e.g., single-choice, text, number), candidates must: 1. Implement a new question/field type class (e.g., number-type field supporting <, ==, > comparisons) within the existing class hierarchy. 2. Write tests covering the new…

  • 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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