"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. :)
Sum all integers from 1 to 2^n
MATCH THE STRINGS (2 CHAR) very easy
02 - Vector Variables 3
07 - Common functions and indexing 6
Find and replaces spaces from a input string with *
Find the starting index of a consecutive condition
Sum of adjacent elements in a vector
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