Christian Clauss 2f9b03393c
Delete queue_on_two_stacks.py which duplicates queue_by_two_stacks.py (#8624)
* Delete queue_on_two_stacks.py which duplicates queue_by_two_stacks.py

* updating DIRECTORY.md

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Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
2023-04-08 17:46:19 +05:30
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