Create detect_n_removeloop.py

[chakirala]

Describe your change:

• Add an algorithm?
• Fix a bug or typo in an existing algorithm?
• Documentation change?

Checklist:

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized.
• I know that pull requests will not be merged if they fail the automated tests.
• This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
• All new Python files are placed inside an existing directory.
• All filenames are in all lowercase characters with no spaces or dashes.
• All functions and variable names follow Python naming conventions.
• All function parameters and return values are annotated with Python type hints.
• All functions have doctests that pass the automated testing.
• All new algorithms have a URL in its comments that points to Wikipedia or other similar explanation.
• If this pull request resolves one or more open issues then the commit message contains Fixes: #{$ISSUE_NO}.

[ghost]

Suggested change

	# Driver program
	llist = LinkedList()
	llist.push(10)
	llist.push(4)
	llist.push(15)
	llist.push(20)
	llist.push(50)
	# Create a loop for testing
	llist.head.next.next.next.next.next = llist.head.next.next
	llist.detectAndRemoveLoop()
	print("Linked List after removing loop")
	llist.printList()
	if __name__ == "__main__":
	# Driver program
	llist = LinkedList()
	llist.push(10)
	llist.push(4)
	llist.push(15)
	llist.push(20)
	llist.push(50)
	# Create a loop for testing
	llist.head.next.next.next.next.next = llist.head.next.next
	llist.detectAndRemoveLoop()
	print("Linked List after removing loop")
	llist.printList()

You need to run test only when it is run as main and not every time it is imported

[ghost]

possibly add a docstring describing about how to use and what does it do, comments are not able to show what is the soul purpose. docstring might help

[ghost]

Also the tests have failed, (you have checked that you know your pull request would not be merged if tests fail)

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

Please reopen this pull request once you commit the changes requested or make improvements on the code. If this is not the case and you need some help, feel free to seek help from our Gitter or ping one of the reviewers. Thank you for your contributions!