what the hell?why my code can work on my computer?while it report error here
It looks like your solution uses the symbolic math toolbox. I am assuming that that is not available to Cody solutions.
Find nearest prime number less than input number
Count up then down
Sum the elements in either diagonal of a square matrix
Create a two dimensional zero matrix
Vectors counting by 2
Right and wrong
Increment a number, given its digits
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