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925 challenges 556 easy 323 medium 46 hard

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Matrix & 2D Arrays easy

Rotate Image 90 Degrees Clockwise

Rotate a square matrix 90 degrees clockwise and return the rotated matrix.

matrix rotation in-place

Matrix & 2D Arrays easy

Transpose Matrix In-Place

Implement a function that transposes a square matrix in-place and returns the transposed matrix.

matrix transpose in-place

Matrix & 2D Arrays easy

Flipping an Image

Implement a function that flips an image represented as a binary matrix by reversing each row and inverting each pixel.

matrix list-comprehension bitwise

Showing 1–3 of 3 challenges · easy · Matrix & 2D Arrays

Matrix & 2D Arrays — Python coding challenges

What you will find here

This page lists matrix & 2d arrays challenges — real Python problems you solve in the browser IDE with instant test feedback. Each challenge includes a clear brief, starter code, and automated checks.

Challenges vs tutorials and quizzes

Challenges test what you can build under constraints. For guided teaching, use our Python tutorials. For quick checks, try quizzes or copy snippets from code samples.