I really don't see the point of that kind of problems where you can't use Matlab built-in functions.
Finding Perfect Squares
Better bullseye matrix
Integer Sequence - II : New Fibonacci
Crop an Image
Set some matrix elements to zero
Cody Computer Part 1 - Guess the system font used by uipanel
Generate a string like abbcccddddeeeee
Multiply 2 numbers
Create a vector whose elements depend on the previous element
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