J-G, thanks for the problem. Could you add some more information about expected inputs and outputs? An example and some more tests would be helpful too. If your test suite has exactly one test, it's trivial to write a correct answer.
Back to basics 7 - Equal NaNs
Back to basics 8 - Matrix Diagonals
Reverse the elements of an array
Back to basics - mean of corner elements of a matrix
Calculate square and cube of number
Order of things - 2
Insert certain elements into a vector.
Bleed non-zeros to the right using REGEXP, and that sort of cheatcodess...
Wayfinding 1 - crossing
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