Hey everyone,

I’ve been trying to remove duplicates from an array in my code, but I seem to be facing some challenges. I came across a helpful blog post online that explains the process, but I’m still struggling to implement it correctly.

I have followed the steps outlined in the blog post, but I’m not getting the desired results. I believe I might be missing something or making a mistake in my implementation. Here’s the code I have so far:

python
# My current code
def remove_duplicates(arr):
# Implementation here
pass

# Test case
arr = [1, 2, 3, 4, 2, 1, 3]
result = remove_duplicates(arr)
print(result)

I would greatly appreciate it if someone could take a look at the blog post and my code to help me identify what I might be doing wrong. If you have any alternative approaches or suggestions, I’m open to those as well.

Thank you in advance for your help!