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Friday, June 4, 2021

Solution Exercise 50: list of elements duplicated at least 3 times in Python
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Exercise 50

Write a Python algorithm which returns the list of elements duplicated at least 3 times within a given list L .

Solution

# function which determines the elements duplicated at least 3 times
def duplicate3 (L):
    # initialization of the list of duplicated elements at least 3 times
    dup3 = []
    for i in range (0, len (L)):
        if L.count (L [i]) >= 3 and L [i] not in dup3:
            dup3.append (L [i])
    return dup3
# Example
L = [3, 7, 3, 7, 12, 5, 7, 12, 31, 12, 3]
print (duplicate3 (L)) # output: [3, 7, 12]


Younes Derfoufi
my-courses.net

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