Reverse the vector
Back to basics 22 - Rotate a matrix
How many trades represent all the profit?
Detect a number and replace with two NaN's
The sum of the numbers in the vector
Scrabble Scores - 11
Pattern Recognition 3 - Variable Unit and Array Length (including cell arrays)
Pattern Recognition 1 - Known Unit Length
Scrabble Scores - 13
Lights Out 13 - 5x5, three stages, x moves
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