it took 3 hours!!!
"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 common elements in matrix rows
Multiply a column by a row
Doubling elements in a vector
Find out missing number from a vector of 9 elements
Compute Fibonacci Number
How many unique Pythagorean triples?
Triangle of numbers
Sum of Two Numbers
Approximate the cosine function
Separate even from odd numbers in a vector - with a loop
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