Neuron Grid State Update (LC 289 Variant)

CodingScale AILast reported May 2026Low Frequency
Reported
2× across candidate reports
First seen
April 2026
Last reported
May 2026
Reported outcome
unknown

Problem Overview

You are given a matrix of neurons and update it one step, in the style of LeetCode 289 (Game of Life) with different rules. Two graded parts: first with a copy of the grid, then in place. The rules as posted: Given a matrix of 'neurons', where each element is…

  • 1 candidate-reported follow-up — 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
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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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