Minimum Window Substring Variant

CodingSnowflakeLast reported July 2025Low Frequency

Reported: 1× across candidate reports
First seen: July 2025
Last reported: July 2025
Reported outcome: unknown

Problem Overview

Given a document string (containing arbitrary characters: letters, digits, punctuation, etc.) and a list of target words (plain words, no punctuation), perform three tasks: (1) Check whether all target words appear in the document. (2) Count the occurrences of each target word in the document. (3) Find the shortest contiguous…

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

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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.