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.
Determine if a Given Number is a Triangle Number
Matlab Basics II - squares
Matlab Basics II - Minimum
Wayfinding 3 - passed areas
Mmm! Multi-dimensional Matrix Multiplication
Operate on matrices of unequal, yet similar, size
Wayfinding 5 - Travel contour
Wayfinding 2 - traversing
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