In view of the recent spate of trivial problems with no test suite to speak of, thanks for making the effort of providing a proper test suite and a slightly less trivial problem.
Swap the first and last columns
Do Fast Fourier Transformation
Make roundn function
Matlab Basics - Set unwanted parts of a vector to zero
Matlab Basics II - Determine if an array has a 3rd dimension
Matlab Basics II - Intervals
Finding an element in a vector
Matlab Basics II - Create a vector with a repeated entry
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