Thanks for the fun problem!
So compact! I didn't know about arrayfun and cellfun. Very useful functions.
Took a couple of tries, but I got it! :)
Replace NaNs with the number that appears to its left in the row.
Similar Triangles - find the height of the tree
convert matrix to single column
A matrix of extroverts
Fast 1-D Convolution (full shape)
Apply Function to Each Field of a Structure Array: Part 1
Words Count: A Cell Array Approach
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