Design a rating aggregator that returns totals and averages

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Question

Design a rating aggregator that returns totals and averages

PracHub · Accepted Answer

This question evaluates a candidate's competency in designing and implementing data structures and algorithms for maintaining dynamic aggregates (total counts, sums, and averages) across user-item ratings while handling additions, updates, and removals.

Quick Overview

Design a rating aggregator that returns totals and averages