Def recursiveDigitSum(n): ''' Computes the sum of digits of a positive integer n. Returns None of n is negative. - Your solution must use recursion in order to receive credit. ''' return "stub"

def recursiveDigitSum(n):

   if n<10:

       return n

   else:

       return (n%10)+recursiveDigitSum(n/10)

print(recursiveDigitSum(93))

Explanation:

Inside the recursiveDigitSum function, use an if condition to check whether the given number is less than 10.If it's true, return the number as this will act as a stopping criteria.Otherwise, keep on calling the recursiveDigitSum function recursively.Lastly call the recursiveDigitSum function.

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