The test suite has been enhanced.
The creator of this problem might have indeed banged his head, which has affected his ability to think properly. I wish such stupid and meaningless problems stop showing up on Cody.
I admit that the time I'll spend on correcting the text of sufferers of Bangolangosis is small, but what I learned about regexprep from solving this problem will surely help me in other applications.
Angle between two vectors
Back to basics 17 - white space
Back to basics 23 - Triangular matrix
Is this is a Tic Tac Toe X Win?
Distance walked 3D
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