I really don't see the point of that kind of problems where you can't use Matlab built-in functions.
Indexed Probability Table
How many trades represent all the profit?
Make a 1 hot vector
subtract central cross
Check that number is whole number
Angle between two vectors
Convert a structure into a string
Wind outward from the center ...
Make a logical diamond using GALLERY function
Combinations without using nchoosek
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