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Friday, May 28, 2021

Solution Exercise 44: python algorithm for moving the elements of a list
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Exercise 44

Write a Python algorithm as a function which takes as a parameter a list of integers L and which returns the list obtained from L by moving all zeros to the beginning of the list. Example if L = [7, 0, 11, 0, 25, 16, 0, 14], the algorithm returns the list: [0, 0, 0, 7, 11, 25, 16, 14]

Solution

def moveZero(L):
     # list extracted from L formed only of zeros from L
     l_zero = []
     # list extracted from L formed only of the non-zero elements of L
     l_without_zero = []
     for x in L:
          if x == 0:
               l_zero.append(x)
          else:
               l_without_zero.append (x)
     return l_zero + l_without_zero

# Example:
L = [7, 0, 11, 0, 25, 16, 0, 14]
print (moveZero(L)) # print: [0, 0, 0, 7, 11, 25, 16, 14]


Younes Derfoufi
my-courses.net

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