"cat" is a really nice touch for concatenation of those arrays! your solutions never fail my expectation.
by the way, i saw that "sub-func" comment...:)
Calling the two sub-functions the right way will not hurt your score. Great work though. :)
Find all elements less than 0 or greater than 10 and replace them with NaN
First N Perfect Squares
Check if number exists in vector
Another colon problem
Remove the air bubbles from a vector
Horizontal matrix sort
Approximate the cosine function
How many days in a month?
Separate even from odd numbers in a vector - without loops
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