LeetCode #141: Linked List Cycle

[WazedKhan]

Summary by CodeRabbit

• Chores
  • Added a solution for detecting cycles in linked lists.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: d52b27d3-4e47-48a0-b271-a3bbbaabff75

📥 Commits

Reviewing files that changed from the base of the PR and between 5ca1123 and 2d81332.

📒 Files selected for processing (1)

• LeetCode/easy/has_cycle_141.py

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📝 Walkthrough

Walkthrough

Adds a singly linked list node definition and a hasCycle method that uses Floyd’s tortoise-and-hare traversal to detect whether a cycle exists.

Changes

Linked list cycle detection

Layer / File(s)	Summary
Node type and cycle check LeetCode/easy/has_cycle_141.py	ListNode is added with val and next, and Solution.hasCycle traverses with slow and fast pointers to return a cycle result.

Sequence Diagram(s)

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

A bunny hopped through linked-list lanes,
With ears up high and curious gains.
Slow paw, fast paw—who meets who?
If they bump, a cycle peeks through!
🐰✨ Hop-hop, the loop is true.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: a LeetCode 141 linked list cycle solution.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch leetcode-141-linked-list

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