Test problem 21 is faulty.
It has been updated.
Test suite has crashed again plz fix
@ Nikolaos: are you sure it's the test suite and not a server error? If you get the following message, it is due to a temporary server problem, not a specific problem: "While evaluating the solution, the server encountered an error caused by temporary unavailability of MATLAB Service. Wait a few minutes for the MATLAB Service to return, and then rescore." If you are getting this error, simply try the problem again later or on a different day.
Determine whether a vector is monotonically increasing
Connect Four Win Checker
"Low : High - Low : High - Turn around " -- Create a subindices vector
Angle between Two Vectors
Knights and Knaves (part 2)
Divisible by 7
Lights Out 7 - 5x5, x moves
Calculator spelling - Numbers to Letters
Lights Out 10 - 5x5, with wrapping, 6 moves
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