Return All Permutations / Combinations

CodingDatabricksLast reported November 2025Low Frequency

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

Problem Overview

Given a collection of elements (e.g., an array or string), return all possible permutations or combinations. This appeared as a follow-up to a sliding-window / two-pointer base…

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

Unlock the full Databricks catalog

Full problem statements, candidate-reported follow-ups, and walkthroughs — for every Databricks question.

Unlock with Pro

Already a member? Sign in

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.