"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. :)
Remove all the words that end with "ain"
Return area of square
Concatenate two strings
How many days in a month?
Given a matrix A return a vector of the product of the elements in each column using a loop without using prod.
Remove the first, third and fifth rows of a matrix
How many unique Pythagorean triples?
Capitilize the first letter of every word in a string
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