I think that with this kind of problem, you can process in two steps.
A first easy problem with small N (to test perms for example). And a harder problem with big N, which
oblige to find another algorithm.
Get the area codes from a list of phone numbers
Number of toolboxes?
Square Digits Number Chain Terminal Value (Inspired by Project Euler Problem 92)
Try 1.5.4: Celsius to Fahrenheit
Matrix of Multiplication Facts
Rewrite setdiff to account for non-unique values
The Hills Are Alive...
Muphry's Law of MATLAB
Miles to go before I sleep
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