Problem 412. Back to basics 22 - Rotate a matrix

Created by Alan Chalker

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Covering some basic topics I haven't seen elsewhere on Cody.

Rotate the input matrix 90 degrees counterclockwise (e.g. [1 2; 3 4] -> [2 4; 1 3]

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Last Solution submitted on Jan 08, 2026

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Nick on 29 Jun 2014

Very nice problem to solve

Chaya N on 22 Oct 2016

The test suite does not like the inbuilt function . Says there are too many output arguments!

Chaya N on 22 Oct 2016

Is there something wrong with the test suite? The assertion fails and I get the following message:

"Error using rotate Too many output arguments. Error in TestPoint1 (line 3) assert(isequal(rotate(x),y_correct))"

Aditya Jain on 23 Oct 2016

Yes it rotate is an inbuilt MATLAB function and it overshadows this. Changed the function name to rotateBy90

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Problem 412. Back to basics 22 - Rotate a matrix

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Problem 412. Back to basics 22 - Rotate a matrix

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Last 200 Solutions

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Problem Recent Solvers932

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