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.
Which doors are open?
Implement simple rotation cypher
MATCH THE STRINGS (2 CHAR) very easy
04 - Scalar Equations 2
Find the area of the four walls
All your base are belong to us
Figurate number triangle
Factorize THIS, buddy
Are you in or are you out?
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