The "super digit" of a (base 10) number N is defined as follows:
If the number consists of a single digit, it is simply N otherwise, it is the super digit of the sum of the digits of N.
Examples:
the super digit of 7 is 7
the super digit of 42 is the super digit of 4+2=6, which is 6
the super digit of 9876 is the super digit of 9+8+7+6=30, which is the super digit of 3+0=3, which is 3
(A) Implement the recursive function super digit, which returns the super digit of its argument.
def super_digit(n):
# YOUR CODE HERE