Python: Remove the duplicate elements of a given array of numbers
Python Basic - 1: Exercise-73 with Solution
Remove Duplicates from Array
Write a Python program that removes duplicate elements from a given array of numbers so that each element appears only once and returns the new length of the array.
Sample Solution:
Python Code:
# Define a function to remove duplicates from a sorted list
def remove_duplicates(nums):
# Iterate through the list in reverse order
for i in range(len(nums)-1, 0, -1):
# Check if the current element is equal to the previous one
if nums[i] == nums[i-1]:
# If equal, delete the previous element to remove the duplicate
del nums[i-1]
# Return the length of the modified list
return len(nums)
# Test the function with two different lists and print the results
print(remove_duplicates([0,0,1,1,2,2,3,3,4,4,4])) # [0, 1, 2, 3, 4], Length: 5
print(remove_duplicates([1, 2, 2, 3, 4, 4])) # [1, 2, 3, 4], Length: 4
Sample Output:
5 4
Explanation:
Here is a breakdown of the above Python code:
- First the function "remove_duplicates" takes a sorted list (nums) as input.
- It iterates through the list in reverse order using a 'for' loop.
- Inside the loop, it compares each element with its previous one to identify duplicates.
- If a duplicate is found, it deletes the previous element using 'del' to remove the duplicate.
- The function returns the length of the modified list after removing duplicates.
- Test the function with two different lists and print the modified lists along with their lengths.
Visual Presentation:
Flowchart:
Python Code Editor:
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