OA: Email Verification Checksum (k-Letter Chunks Index a Verification String)

OAGoogleLast reported May 2026Low Frequency

Reported: 2× across candidate reports
First seen: April 2026
Last reported: May 2026
Reported outcome: pass

Problem Overview

Google online assessment question, reconstructed from 2 candidate reports (April 2026 to May 2026). The write-up includes a Python solution that passes 7 test cases.

The full 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 Google catalog

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

Unlock with Pro

Already a member? Sign in

Verified Source

Every question is reconstructed from multiple independent candidate reports. Follow-ups candidates reported, not invented ones.

Codex Fact-Checked

Technical claims, formulas, and scale numbers are reviewed against primary sources.

Interviewer Follow-ups

The follow-ups candidates reported, with the trigger that prompts each one — plus the mistakes that sink people.