Better than all previous non-cheat solutions :-)
The function 'unique' should probably also be prohibited.
Strictly following the problem statement, this should pass?
This also does the trick :)
Number of toolboxes?
middleAsColumn: Return all but first and last element as a column vector
Return the first and last character of a string
Insert zeros into vector
Compare two input matrices
Vertical matrix sort
Product of Each Column
How many days in a month?
Sum of adjacent elements in a vector
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