Python: Remove all duplicate elements from a given array
Python: Array Exercise-23 with Solution
Write a Python program to remove all duplicate elements from a given 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:
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:
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.
Python: Tips of the Day
Find current directory and file's directory:
To get the full path to the directory a Python file is contained in, write this in that file:
import os dir_path = os.path.dirname(os.path.realpath(__file__))
(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)
To get the current working directory use
import os cwd = os.getcwd()
Documentation references for the modules, constants and functions used above:
- The os and os.path modules.
- The __file__ constant
- os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
- os.path.dirname(path) (returns "the directory name of pathname path")
- os.getcwd() (returns "a string representing the current working directory")
- os.chdir(path) ("change the current working directory to path")
Ref: https://bit.ly/3fy0R6m
- New Content published on w3resource:
- HTML-CSS Practical: Exercises, Practice, Solution
- Java Regular Expression: Exercises, Practice, Solution
- Scala Programming Exercises, Practice, Solution
- Python Itertools exercises
- Python Numpy exercises
- Python GeoPy Package exercises
- Python Pandas exercises
- Python nltk exercises
- Python BeautifulSoup exercises
- Form Template
- Composer - PHP Package Manager
- PHPUnit - PHP Testing
- Laravel - PHP Framework
- Angular - JavaScript Framework
- Vue - JavaScript Framework
- Jest - JavaScript Testing Framework