A function that returns either 'Rock', 'Scissors', or 'Paper' (string). You may succeed or you may fail the (case insensitive) tests.
According to Google translate, "driemaal is scheepsrecht" means "third time lucky" in Dutch.
I was wondering who would try this one, and how many iterations it would take. :-)
You can also try this solution style with another Cody problem.
http://www.mathworks.com/matlabcentral/cody/problems/648-cumulative-probability-of-finding-an-unlikely-combination
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