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Fetch, group, and print paginated activities

PeregrineSoftware Engineer · Technical Screen
MediumSoftware EngineerTechnical ScreenCoding & Algorithms

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This interview question evaluates algorithm design, data structures, correctness, complexity, edge cases, and implementation details in a realistic interview setting. A strong answer for Fetch, group, and print paginated activities states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.

Question

Given a paginated API that returns (totalCount, activities[]) for a requested page, implement code that iterates through all pages and prints every activity. After fetching all activities, group them into clumps where each clump contains activities sharing the same type and name. Implement a Clump class with attributes: activities list, type, and name, and return the clumps. Update the output so each activity shows the user’s name (retrieved from a separate getUserName(userId) API) instead of the user ID.