why this code is not correct?
s = summ(v)
sorry mate, this is unfair for those who actually came up with a compact solution
No need to be sorry.
Personally I think the regexp should be always forbidden.
I used it (and I had never thought about it before) because it seems that everyone is using it.
Back to basics 26 - Keywords
Length of the hypotenuse
Flip the vector from right to left
Add a vector to a matrix
Sum of Two Numbers
Capitilize the first letter of every word in a string
Separate even from odd numbers in a vector - without loops
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