Better than all previous non-cheat solutions :-)
The function 'unique' should probably also be prohibited.
Strictly following the problem statement, this should pass?
This also does the trick :)
Times 2 - START HERE
Getting the absolute index from a matrix
Rounding off numbers to n decimals
Replace every 3rd element in a vector with 4
Make roundn function
Separate even from odd numbers in a vector - with a loop
How many unique Pythagorean triples?
Separate even from odd numbers in a vector - without loops
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