Covering some basic topics I haven't seen elsewhere on Cody.
Return a cell array of strings of all MATLAB keywords.
A duplicate of Problem 359?
http://www.mathworks.com/matlabcentral/cody/problems/359-back-to-basics-14-keywords
yup, its a dup
Not quite a duplicate: the Test Suite is slightly different. ___ As per my comment there, the problem statement here should also specify that the keywords must be sorted alphabetically (and appear only once each).
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Return the first and last character of a string
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Output any real number that is neither positive nor negative
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Back to basics - mean of corner elements of a matrix
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