I really don't see the point of that kind of problems where you can't use Matlab built-in functions.
find the maximum element of the matrix
Calculate the Number of Sign Changes in a Row Vector (No Element Is Zero)
Find the hypotenuse
Wind outward from the center ...
Cody Computer Part 1 - Guess the system font used by uipanel
Unique values without using UNIQUE function
Sophie Germain prime
Sort an array of structures
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