There is an error in the second problem of the test suite (also in the example) with an extra "[" on the second line of the "correct" melody.
Amazing how hard it is to get your test suite right on the first try. Thanks, and it looks like you're in the lead!
The last 3 tests are incorrect.
Dimensions of matrices being concatenated are not consistent.
I admit they look wrong, but the actual text in the MATLAB code runs properly. I just re-scored some answers and they worked fine. It must be some kind of HTML display problem. I'll check into it.
Word Counting and Indexing
Find the biggest empty box
The Answer to Life, the Universe, and Everything
Replace Nonzero Numbers with 1
Stuff the Board
2048 Next Move
Fix the last element of a cell array
The 17x17 Problem
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