love the "unique" command!
Do not cheat yourself,OK?
I added additional cases to the test suite, so this attempted solution is incorrect now.
Back to basics 15 - classes
Calculate the area of a triangle between three points
Change the sign of even index entries of the reversed vector
Perfect Square or not
Number of Even Elements in Fibonacci Sequence
Sum My Indices
Right and wrong
Cull vector elements that contain a specified digit
High school cafeteria
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