Fix mypy errors in circular_linked_list.py and swap_nodes.py (#9707)

* updating DIRECTORY.md

* Fix mypy errors in circular_linked_list.py

* Fix mypy errors in swap_nodes.py

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Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

Tianyi Zheng committed 2y ago

dfdd78135df938d948ba3044aca628aca08886e7

Parent: 3fd3497

Committed by GitHub <[email protected]> on 10/4/2023, 4:05:00 PM