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name: data-structure-chooser description: Recommend basic data structures for a task. Use when a junior developer needs help choosing lists, maps, or sets.

Data Structure Chooser

Purpose

Recommend basic data structures for a task.

Inputs to request

• Core operations and their frequency.
• Ordering and uniqueness requirements.
• Expected data size and memory limits.

Workflow

1. Clarify operations: lookup, insert, iterate, order.
2. Recommend a structure with time/space tradeoffs.
3. Provide a small example usage.

Output

• Recommendation and rationale.

Quality bar

• State the complexity assumptions clearly.
• Offer an alternative when tradeoffs are close.