The test suite does not check that the solution is a character string, but the problem definition requires that it should.
Added this check. (I messed it up a bit the first time I tried to do it, so sorry for some interim weirdness.)
str = num2str(A,formatSpec), could replace '
Invalid solution, really
New test suite invalidates this solution.
Sum of diagonal of a square matrix
Find the index of n in magic(n)
Matlab Basics - Rounding I
find the surface area of a cube
Maintain shape of logical-index mask
So many choices
Is my wife right?
Right and wrong
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