very cool question: learn some new tricks, and get 10 points, why not?!
Hint to spare the pain : string(NaN)==
Right and wrong
Find the biggest empty box
Get the elements of diagonal and antidiagonal for any m-by-n matrix
String Array Basics, Part 1: Convert Cell Array to String Array; No Missing Values
0, 2, 0, -2, 0, 2, 0, -2, ...
Apply Function to Each Field of a Structure Array: Part 2
Spot the First Occurrence of 5
Fast 1-D Convolution (valid shape)
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