Quick Overview

Given two integer matrices stored as dense lists of rows in which most entries are zero, return their exact matrix product. It tests handling matrix dimensions correctly and exploiting sparsity to skip work on zero entries while still producing every entry of the result.

Multiply Two Sparse Integer Matrices Given as Dense Grids

Company: Netflix

Role: Machine Learning Engineer

Category: Coding & Algorithms

Difficulty: easy

Interview Round: Online Assessment

Overview: Given two integer matrices stored as dense lists of rows in which most entries are zero, return their exact matrix product. It tests handling matrix dimensions correctly and exploiting sparsity to skip work on zero entries while still producing every entry of the result.

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