very cool question: learn some new tricks, and get 10 points, why not?!
Hint to spare the pain : string(NaN)==
So many choices
Make one big string out of two smaller strings
Back to basics 23 - Triangular matrix
We love vectorized solutions. Problem 1 : remove the row average.
Is it a number?
Combine the first and last names
Fast 1-D Convolution (full shape)
Block average ignoring NaN values
Hankelize a matrix
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