In this problem, simply return 1 if a supplied number is Munchhausen narcissistic or 0 if not.
153 is narcissistic but not a Munchhausen number
NOTE: the convention is that 0^0=0
Wikipedia link: https://en.wikipedia.org/wiki/Munchausen_number
test cases 5 and 7 seem to not be Narcissistic (https://oeis.org/A005188), but they are still marked as true.
http://oeis.org/A046253 and https://en.wikipedia.org/wiki/Munchausen_number
Extract leading non-zero digit
Colon operator of two vectors
Is it an Armstrong number?
Compare two input matrices
Convert a Cell Array into an Array
remove nans fast
is the number happy?
Tony's trick for duplicating an mx1 vector n times
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