It should be noted that spaces should be ignored or else test suites 3 and 5 fail.
good use of 'hankel' function
Sorry about this, but I got stuck and I want to learn how to do it. After looking at several solutions, I found my mistake and was able to create my own solution :)
What happens if the test suite changed in the future?
This solution is not correct in general, as the way of using hankel here, generates n-1 fake fragments
Clever usage of the Hankel matrix. I don't automatically think of the Hankel for this application, but it really works well. Thanks - I've learned something
What's the point of a 'solution' like this? It passes the test suite, but in what way was it interesting for you to write it?
Back to basics 19 - character types
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We love vectorized solutions. Problem 1 : remove the row average.
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Return the 3n+1 sequence for n
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