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. :)
Sums with Excluded Digits
Project Euler: Problem 10, Sum of Primes
Angle between Two Vectors
Vertical matrix sort
Find the largest number
Add a vector to a matrix
Separate even from odd numbers in a vector - without loops
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