w3resource

Python: Remove all duplicate elements from a given array

Python: Array Exercise-23 with Solution

Write a Python program that removes all duplicate elements from an array and returns a new array.

Sample Solution-1:

Python Code:

import array as arr
def test(nums):
    return sorted(set(nums),key=nums.index)

array_num = arr.array('i', [1, 3, 5, 1, 3, 7, 9])
print("Original array:")
for i in range(len(array_num)):    
    print(array_num[i], end=' ')
print("\nAfter removing duplicate elements from the said array:")
result = arr.array('i', test(array_num))
for i in range(len(result)):    
    print(result[i], end=' ')
array_num = arr.array('i', [2, 4, 2, 6, 4, 8])
print("\nOriginal array:")
for i in range(len(array_num)):    
    print(array_num[i], end=' ')
print("\nAfter removing duplicate elements from the said array:")
result = arr.array('i', test(array_num))
for i in range(len(result)):    
    print(result[i], end=' ')

Sample Output:

Original array:
1 3 5 1 3 7 9 
After removing duplicate elements from the said array:
1 3 5 7 9 
Original array:
2 4 2 6 4 8 
After removing duplicate elements from the said array:
2 4 6 8   

Flowchart:

Flowchart: Remove all duplicate elements from a given array

Sample Solution-2:

Python Code:

import collections
import array as arr
def test(nums):
    return list(collections.OrderedDict.fromkeys(nums))

array_num = arr.array('i', [1, 3, 5, 1, 3, 7, 9])
print("Original array:")
for i in range(len(array_num)):    
    print(array_num[i], end=' ')
print("\nAfter removing duplicate elements from the said array:")
result = arr.array('i', test(array_num))
for i in range(len(result)):    
    print(result[i], end=' ')
array_num = arr.array('i', [2, 4, 2, 6, 4, 8])
print("\nOriginal array:")
for i in range(len(array_num)):    
    print(array_num[i], end=' ')
print("\nAfter removing duplicate elements from the said array:")
result = arr.array('i', test(array_num))
for i in range(len(result)):    
    print(result[i], end=' ')

Sample Output:

Original array:
1 3 5 1 3 7 9 
After removing duplicate elements from the said array:
1 3 5 7 9 
Original array:
2 4 2 6 4 8 
After removing duplicate elements from the said array:
2 4 6 8 

Flowchart:

Flowchart: Remove all duplicate elements from a given array

Python Code Editor:

Contribute your code and comments through Disqus.

Previous: Write a Python program to read a string and interpreting the string as an array of machine values.
Next: Write a Python program to find the missing number in a given array of numbers between 10 and 20.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Become a Patron!

Follow us on Facebook and Twitter for latest update.

It will be nice if you may share this link in any developer community or anywhere else, from where other developers may find this content. Thanks.

https://www.w3resource.com/python-exercises/array/python-array-exercise-23.php