it seems there's an erroneous test case. the second test case has this line in it: Assert(isequal(P,PBM(B,M))), but there's no P or PBM
Fixed, thanks for letting me know.
I couldn't think of a clever way, so I just mimicked how I do multiplication with paper and pencil. Duh.
Remove the air bubbles
Swap the input arguments
Make a Star Pyramid
Is it a number?
~~~~~~~ WAVE ~~~~~~~~~
Multiply a column by a row
Filter AC, pass DC
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