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.
Which doors are open?
Back to basics 1 - Saving
Number of 1s in a binary string
Getting the absolute index from a matrix
Make a 1 hot vector
Order of things - 3
Insert structure in a parameter-cell array.
A SUBSREF variant that accepts the 'end'-operator.
Wayfinding 1 - crossing
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