The Email Ranker

A medium Python interview practice problem on DataDriven. Write and execute real python code with instant feedback.

Domain

Python

Difficulty

medium

Seniority

L3

Problem

Each record in `activities` is one email event: a dict with a `user_id` and an `action` that is either `send` or `receive`, and both count toward a user's activity. Rank users by their total activity from most to least, settling ties alphabetically by `user_id`.

Summary

Some inboxes see more action.

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