It would be beneficial for the problem if zeros were added to test cases, for example [...,1,2,0,-1,-2,...], [...,1,2,3,0,2,3,...], [...1,2,3,0,0,0,1,2,...], [...,1,2,0,0,-1,-2,...], etc.
Additional test cases have been added and the description slightly modified.
Get the area codes from a list of phone numbers
Getting logical indexes
Create incrementing array
Find the index of n in magic(n)
multiply by three
İmage Series 2 AND
İmage Series 1 OR
The Matrix Construction
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