The ordering of roots in test case:
need to make it irrelevant (use set)
or sort in particular order (use sort)
Which values occur exactly three times?
Back to basics 22 - Rotate a matrix
The sum of the numbers in the vector
Matlab Basics - Rounding III
Replace every 3rd element in a vector with 4
Matlab Basics II - squares
Matlab Basics - Rounding II
Matlab Basics II - Operations and Matrix Dimensions
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