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Friend Recommendation System

Design and implement a friend recommendation system that suggests up to 5 potential friends for each user, excluding the user themselves and existing friends. Consider randomization strategies and comprehensive test case coverage.

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Meta


Hello Interview Answer Key

Friend Recommender

A detailed walkthrough of the Friend Recommender problem, covering the approach, implementation, and optimization.

Question Timeline

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Late April, 2026

Meta

Mid-level

Mid April, 2026

Meta

Mid-level

Early April, 2026

Meta

Senior

1. Find bugs 2. Create method to return random friends recommendations. 3. Optimized part- create a method to rank those recommendations (for example rank by the count of mutual friends)

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