Performance · interview question
What is the clearest sign that code around data structure choice should be refactored?
Multiple choiceMediumchapter-16-curatedpremiumperformancedata-structure-choice
Answer and explanation
Correct answer
A. When the rule is no longer easy to trace, explain, or change without breaking nearby behavior.
Why
A refactor is justified when the code stops communicating its intent. Pick the shape that matches membership checks, ordering needs, update patterns, and read frequency.
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