String Index Matching with Deletion Impact

CodingDatabricksLast reported July 2026Low Frequency

Reported: 2× across candidate reports
First seen: February 2025
Last reported: July 2026
Reported outcome: unknown

Problem Overview

You are given two strings: a reference string a and a source string b. Part 1: return the index pairs (intervals) of a that represent b. The only worked example reported is a = 'abcdbcd', b = 'sabcd' returning [[1,3],[4,4],[2,4]]. Neither report states the rule behind those pairs (how segments…

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.