Problem 381. Angle between two vectors

Created by Aurelien Queffurust

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1193 Solutions
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Last Solution submitted on Sep 19, 2020

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David Young on 22 Feb 2012

It would be good to have a more challenging test suite - see the guidelines for problems. Some solvers write code that is just a lookup table for the test cases, and having only one case makes it trivial to do this.

Rick Rosson on 25 Feb 2012

Also, your test should not use string comparison to evaluate what is a purely numerical computation. It would be better if you subtracted the correct answer from the proposed answer, and then compared the absolute value to a am all threshold, such as 1e-6.

Aurelien Queffurust on 2 Mar 2012

Thnaks for your comments. It was my first or second problem sent to CODY. I didn't catch all the tricks to make strong test cases yet.

Aurelien Queffurust on 11 Jun 2012

I have rescored the problem after adding more robust test suites.

Ashutosh datar on 8 Jul 2013

only one test case runs, others are not working

Solution Comments

Solution 399945

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David Verrelli on 4 Apr 2018

Exploits Cody's size calculation algorithm. Use assessFunctionAbsence to thwart (see also Problem 44521).

Solution 65792

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1 Comment

Aurelien Queffurust on 5 Jul 2012

cool I have learnt a new MATLAB function

Solution 60488

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Aurelien Queffurust on 5 Jul 2012

This solution requires Neural Network Toolbox

Solution 51364

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1 Comment

Rick Rosson on 25 Feb 2012

Sorry for cheating, but you made it too easy...

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Problem 381. Angle between two vectors

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Problem 381. Angle between two vectors

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