"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. :)
Duplicate each element of a vector.
Create matrix of replicated elements
01 - Scalar variables
Find the largest number
Given a matrix A (size m x n) create a matrix B which consists of matrix A sorted in descending order by columns and then by rows.
Remove the air bubbles from a vector
Add a vector to a matrix
Sum of Two Numbers
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