DFS with Duplicate Handling

Phone ScreenDatabricksLast reported February 2026Low Frequency

Reported: 1× across candidate reports
First seen: February 2026
Last reported: February 2026
Reported outcome: unknown

Problem Overview

A coding problem requiring a Depth-First Search (DFS) solution. The candidate is expected to implement a standard DFS-based solution, then discuss and implement an alternative multi-round DFS approach. A key aspect is handling…

2 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.

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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.