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).
Find relatively common elements in matrix rows
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