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Saturday, October 17, 2020

Solution Exercise 2: python algorithm to swap a two elements in given list
Python-courses-python-exercises

Exercise 2

write python algorithm to swap the first element with the last element of given list. Example: if L =
["Python" , "Java" , "C++" , "Javascript"]
, the algorithm returns the list:
["Javascript",  "Java" , "C++" , "Python"]

Solution

def swapList(L):
    # getting the last element of list
    swap = L[-1]
    
    # replace the last element by the first element of list
    L[-1] = L[0]
    
    # relace the first element by the last element
    L[0] = swap
    return L
    
    
# Example   
L = L = ["Python" , "Java" , "C++" , "Javascript"]
print(swapList(L))
# The output is : ['Javascript', 'Java', 'C++', 'Python']


Younes Derfoufi
my-courses.net

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Younes Derfoufi

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