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.
Find Rotated Substring
System of equations
Implement simple rotation cypher
String Array Basics, Part 3: Convert Cell Array with Missing Values to String Array
Cody meets Xiangqi: foresee the unseen (Part 1)
String Array Basics, Part 2: Convert String Array to Cell Array; No Missing Values
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