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.
radius of a spherical planet
The Answer to Life, the Universe, and Everything
Who invented zero?
Back to basics - mean of corner elements of a matrix
Find the dimensions of a matrix
All your base are belong to us
Are you in or are you out?
Cull vector elements that contain a specified digit
Sum my indices
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