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Authors:
Y Daniel Lang
Chapter:
5.recursion
Exercise:
Programming Excercises
Question:14 | ISBN:978013274719 | Edition: 6

Question

(Occurrences of a specified character in a string) Rewrite Exercise 15.10 using a helper function to pass the substring of the high index to the function. The helper function header is:
def countHelper(s, a, high):

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