Replicate each element of a row vector (with NaN) a constant number of times.
n=2, A=[1 2 3] -> [1 1 2 2 3 3]
n=0, A=[2 1] -> 
Factorize THIS, buddy
High school cafeteria
Project Euler: Problem 2, Sum of even Fibonacci
07 - Common functions and indexing 2
Two functions (to be sure)
Mysterious digits operation (easy)
BLOCK x3 (Version 3)
I want to know everything!
Permute diagonal and antidiagonal
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