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Meta·Software Engineer·Technical Phone Screen·Intermediate

Intermediate
Jun 2026

Summary

Meta SWE coding round with one problem that looks straightforward until you realize the accumulation and filtering logic trips you up if you're not careful.

Questions Asked (1)

Q1

Implement a function that repeatedly calls an external get_story() API to collect at least 5 stories, accumulates rankings for duplicate story names, filters out stories below a given offset threshold, and returns the remaining stories sorted by ranking in descending order.

Algorithms & Data StructuresAPI & Integrations
Author's notes

The accumulation part is where I almost messed up.

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AI HintsAI Generated

Suggested Approach

Start by clarifying the API contract, including pagination, error handling, and termination conditions. Then outline a solution that uses a hash map to accumulate rankings for duplicate story names, filters based on the offset threshold, and sorts the results in descending order. Finally, discuss edge cases and potential optimizations.

Pro tip: Emphasize the importance of handling API failures gracefully and ensuring the loop terminates correctly, as this demonstrates production-level thinking. Also, mention that you would consider the time and space complexity of your solution.

1. Clarify Requirements and API Details

Ask questions to understand the get_story() API: Does it return a single story or a batch? How does pagination work? What is the structure of a story object? What are the error conditions?

2. Design Data Structures and Algorithm

Choose a hash map to accumulate rankings for duplicate story names, with the story name as key and the total ranking as value. Plan to collect at least 5 stories, possibly more if duplicates are encountered.

3. Implement Collection Loop with Termination

Write a loop that repeatedly calls get_story() until at least 5 unique stories are collected or the API indicates no more data. Handle potential errors and avoid infinite loops.

4. Filter and Sort Results

After collection, filter out stories whose ranking is below the offset threshold. Then sort the remaining stories by ranking in descending order.

5. Test and Optimize

Walk through edge cases such as duplicate stories, API failures, and insufficient stories. Discuss time and space complexity and possible optimizations.

Key Points to Mention

  • API contract and pagination handling
  • Using a hash map to accumulate rankings for duplicates
  • Loop termination conditions and error handling
  • Filtering based on offset threshold
  • Sorting in descending order by ranking
  • Time and space complexity analysis

AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.