Create a cell array of strings containing the first n natural numbers. Slightly harder than it seems like it should be.
>> y = naturalnumbers(4)
'1' '2' '3' '4'
Find all elements less than 0 or greater than 10 and replace them with NaN
Swap the input arguments
Determine Whether an array is empty
Largest Twin Primes
Split a string into chunks of specified length
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