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Wednesday, September 4, 2019

Solution Exercise 29 remove duplicate elements in a list with python

Exercise 29 

Write a Python program that removes duplicate items from a list.

Solution

First method

# -*- coding: utf-8 -*-
# define a function that remove duplicate element in list
def removeDuplicate(l):
    # define and initialize list with no duplicate element
    unique = []
    # building a list with no duplicate element 
    for x in l:
        if x not in unique:
            unique.append(x)
    return unique

# Example
l = [2, 7, 13, 2, 17, 13, 2, 7, 13]
print(removeDuplicate(l))

Second method


# -*- coding: utf-8 -*-
# define a function that remove duplicate element in list
def removeDuplicate(l):
    # convert the list l to a set
    SET = set(l)
    # reconvert the set SET to a list
    L   = list(SET)
    return L

# Example
l = [2, 7,7, 13, 2, 17, 17, 13, 15, 15, 2, 7, 13]
print(removeDuplicate(l))


Younes Derfoufi

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