Given a vector x and an integer n, convert x to a vector of length n by (1) chopping off the end if it is too long, or (2) adding zeros to the end if it is too short. If x is a character vector, then add blanks to the end instead of zeros.
I love vector problems with classically-inspired titles! Good old Procrustes...
Select every other element of a vector
First non-zero element in each column
Get the length of a given vector
Add more zeros
create a circulant matrix
Mean ignoring NaNs
Evaluating continued fractions
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