Solution Exercise 94*: python algorithm to find the list of repeated words

Exercise 94*

Write a Python program as function that takes as parameter a string s and which returns the list repeated word within the string s. Example: if s = "Python is object oriented programming language. Python is also also used for data sciences", the fuction returns the list: ['Python', 'is', 'also']

Solution

def repeated_word(s):
    # converting the string s to a list
    L = s.split()
    # initialising the list of repeated words
    repeated = []
    
    for word in L:
        if L.count(word) >= 2 and word not in repeated:
            repeated.append(word)
    return repeated

# testing the algorithm
s = "Python is object oriented programming language. Python is also also used for data sciences"
print(repeated_word(s)) # the out put is: ['Python', 'is', 'also']