Write a function called count_token(source, token) that takes two strings as input; a source and a token. The function should use a recursive process to count the number of times the token appears in the source string. You may assume the token is only a single character long.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Problem 4 (Count Token)
Write a function called count_token(source, token) that takes two strings as input;
a source and a token. The function should use a recursive process to count the number
of times the token appears in the source string. You may assume the token is only a
single character long.
Sample run:
>> print(count_token('peter piper picked a peck of pickled peppers',
'p'))
9.
>>> print(count_token ("betty botter bought some butter", 'b’)
4
>>> print(count_token ("betty botter bought some butter", 't')
7
Transcribed Image Text:Problem 4 (Count Token) Write a function called count_token(source, token) that takes two strings as input; a source and a token. The function should use a recursive process to count the number of times the token appears in the source string. You may assume the token is only a single character long. Sample run: >> print(count_token('peter piper picked a peck of pickled peppers', 'p')) 9. >>> print(count_token ("betty botter bought some butter", 'b’) 4 >>> print(count_token ("betty botter bought some butter", 't') 7
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