Core Collections · interview question

Another engineer will maintain this code later. What choice helps the most around sorting and grouping?

Multiple choiceMediumchapter-3-curatedpremiumcore-collectionssorting-and-grouping

Delay clarity until production traffic reveals the edge case and then patch it under pressure.Keep sorting and grouping implicit so the script stays short and hope the next engineer infers the rule.Make the rule obvious in names, flow, and boundaries so the next reader does not have to reverse-engineer your intent.Solve the symptom with comments only and avoid changing the code shape around sorting and grouping.

Answer and explanation

Correct answer

C. Make the rule obvious in names, flow, and boundaries so the next reader does not have to reverse-engineer your intent.

Why

Maintainability comes from explicit intent. Interviewers care whether you can connect the data transformation to a real use case.

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Another engineer will maintain this code later. What choice helps the most around sorting and grouping?

Correct answer

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