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Thursday, October 22, 2020

Solution Exercise 57: python program that find the number of occurrence within a given string
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Exercise 57

Write a python program as a function which takes as parameter a tuple of string (s, s1) and which returns the number of the occurrences of s1 within the string s. Example if s = "Python is object oriented and dynamically typed " and s1 = "ed" , the function returns 2

Solution

def numberOccurrences(s , s1):
    n = len(s)
    m = len(s1)
    
    # initializing the number of occurrences of s1 wthin the string s.
    occurrences = 0

    for i in range(0 , n-m):
        if s[i:i+m] == s1:
            occurrences = occurrences + 1
    return occurrences

s = "Python is object oriented and dynamically typed " 
s1 = "ed"
print(numberOccurrences(s , s1)) # display 2


Younes Derfoufi
my-courses.net

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