very cool question: learn some new tricks, and get 10 points, why not?!
Hint to spare the pain : string(NaN)==
Swap the first and last columns
Arrange Vector in descending order
Make a run-length companion vector
Find my daddy long leg (No 's')
Block average ignoring NaN values
Words Count: A String Array Approach
String Array Basics, Part 2: Convert String Array to Cell Array; No Missing Values
Words Count: A Cell Array Approach
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