very cool question: learn some new tricks, and get 10 points, why not?!
Hint to spare the pain : string(NaN)==
Reverse the vector
Replace Vector Elements
Given a window, how many subsets of a vector sum positive
intersection of matrices
Remove the Zero
String Array Basics, Part 4: Convert String Array with Missing Values to Cell Array
Words Count: A Cell Array Approach
Words Count: A String Array Approach
Moving Product (Easy)
Generating random matrix with given probability mass function
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