Generate the following vector：
elseif n=2 then
q=[2 2 1];
elseif n=3 then
q=[3 3 3 2 2 1];
Did I do it right?
regexp hacks are not cool. Please disallow them in the Test Suite.
Find all elements less than 0 or greater than 10 and replace them with NaN
Determine Whether an array is empty
Replace Vector Elements
Extra safe primes
Find the repeating elements and repetitions of a row vector.
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