test cases imply that the question title should be "spot the square"
I added a rectangular (non-square) test case. Thanks for the note.
This is a good answer. I changed the test suite so that you wouldn't have to deal with logical input matrices. Sorry about that!
This code is referenced in the following blog post: http://blogs.mathworks.com/community/2015/01/19/robot-game-playing-in-matlab-part-2/
Find common elements in matrix rows
Find state names that start with the letter N
Given area find sides
CONVERT TAN TO SIN
Is this triangle right-angled?
Is It a Snake?
Stuff the Board
The 17x17 Problem
Count the Digits in the Box
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