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.
Which values occur exactly three times?
Sum all integers from 1 to 2^n
Back to basics 23 - Triangular matrix
Change the sign of even index entries of the reversed vector
Times 3 problem
Matlab Basics II - Unit Conversion
Matlab Basics II - Find the roots of a function
Matlab Basics II - Log and natural log
Matlab Basics - Set unwanted parts of a vector to zero
Matlab Basics II - Minimum
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