The test suite already spoils the solution.
True. In general that should be avoided, although admittedly it's difficult here because if the correct answer were hard-coded, then changes to: (i) the hardware on which Cody runs; or (ii) the version of MATLAB that Cody employs may eventually invalidate it. Having said that, the Test Suite could still be tightened up (see e.g. Solution 1461085).
Back to basics 2 - Function Path
Sum the Digits of a Number
Length of a short side
Area of a Square
Back to basics 19 - character types
Back to basics 17 - white space
Back to basics 9 - Indexed References
Back to basics 1 - Saving
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