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BrianLusina merged 1 commit into from
Jan 5, 2026
Merged

docs(data-structures, linked-list): add solution description for reve… #141

BrianLusina merged 1 commit into from
Jan 5, 2026

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@BrianLusina BrianLusina commented Jan 5, 2026 •
edited by coderabbitai bot
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Describe your change:

Adds documentation for reversing a sublit of a linked list between a given left and right position within a linked list

  • 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}.

Summary by CodeRabbit

  • Documentation
    • Added comprehensive guide explaining how to reverse nodes in a linked list between specified positions, including detailed algorithm explanation, step-by-step procedures, illustrative examples, and complete time/space complexity analysis.
    • Enhanced clarity in method documentation and inline comments to provide better explanation of edge case handling and important implementation steps.

✏️ Tip: You can customize this high-level summary in your review settings.

@BrianLusina BrianLusina self-assigned this Jan 5, 2026
@BrianLusina BrianLusina added enhancement Algorithm Algorithm Problem Datastructures Datastructures Documentation Documentation Updates LinkedList Linked List Data Structure labels Jan 5, 2026
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coderabbitai bot commented Jan 5, 2026 •
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📝 Walkthrough

Walkthrough

Documentation enhancements to a singly linked list implementation covering sublist reversal operations. The README receives a comprehensive new section explaining the algorithm, constraints, and complexity analysis. Code documentation is clarified through updated docstrings and inline comments without functional logic changes.

Changes

Cohort / File(s) Summary
README Documentation
datastructures/linked_lists/singly_linked_list/README.md		 New in-depth section added on "Reverse Nodes in a Linked List Between left and right" with problem statement, constraints, algorithm walkthrough (dummy node setup, boundary identification, node repositioning), step-by-step procedure, illustrative images, solution summary, and time/space complexity analyses.
Code Documentation
datastructures/linked_lists/singly_linked_list/single_linked_list.py		 Docstring wording improvements for reverse_between and reverse_between_with_dummy methods (ampersand to spelled-out "and"). Inline comments added to reverse_between_with_dummy clarifying edge-case handling when left = 1 and steps for moving prev pointer, identifying current node, and reversing sublist.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

🐰 With whiskers twitched and prose so bright,
I've penned the tale of nodes in flight,
Reversing lists from left to right,
With dummy nodes and steps laid right—
Documentation: pure delight! 📚

Pre-merge checks and finishing touches

❌ Failed checks (1 warning, 1 inconclusive)
Check name Status Explanation Resolution
Docstring Coverage ⚠️ Warning Docstring coverage is 66.67% which is insufficient. The required threshold is 80.00%. You can run @coderabbitai generate docstrings to improve docstring coverage.
Title check ❓ Inconclusive The title is truncated and vague, containing only partial reference to the primary change without conveying the full scope. Complete the title to fully describe the change, e.g., 'docs(linked-list): add solution description for reversing nodes between positions' to be clear and specific.
✅ Passed checks (1 passed)
Check name Status Explanation
Description check ✅ Passed The description follows the template structure and includes a meaningful summary, though some checklist items marked as complete may be inaccurate regarding multiple files being modified.
✨ Finishing touches
  • 📝 Generate docstrings

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coderabbitai bot reviewed Jan 5, 2026
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Actionable comments posted: 0

🧹 Nitpick comments (1)
datastructures/linked_lists/singly_linked_list/README.md (1)

718-757: Simplify repetitive sentence structures in algorithm explanation and summary.

Multiple consecutive bullet points begin with "We," reducing readability. Consider combining related steps or restructuring to vary sentence openings while maintaining clarity.

For example, lines 718-726 could consolidate setup steps into a single point, and lines 749-756 could use action-oriented phrasing (e.g., "Initialize a dummy node..." instead of "We initialize...").

📜 Review details

Configuration used: defaults

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 5b7366c and dd76888.

⛔ Files ignored due to path filters (12)
  • datastructures/linked_lists/singly_linked_list/images/solutions/singly_linked_list_reverse_between_left_and_right_solution_1.png is excluded by !**/*.png
  • datastructures/linked_lists/singly_linked_list/images/solutions/singly_linked_list_reverse_between_left_and_right_solution_10.png is excluded by !**/*.png
  • datastructures/linked_lists/singly_linked_list/images/solutions/singly_linked_list_reverse_between_left_and_right_solution_11.png is excluded by !**/*.png
  • datastructures/linked_lists/singly_linked_list/images/solutions/singly_linked_list_reverse_between_left_and_right_solution_12.png is excluded by !**/*.png
  • datastructures/linked_lists/singly_linked_list/images/solutions/singly_linked_list_reverse_between_left_and_right_solution_2.png is excluded by !**/*.png
  • datastructures/linked_lists/singly_linked_list/images/solutions/singly_linked_list_reverse_between_left_and_right_solution_3.png is excluded by !**/*.png
  • datastructures/linked_lists/singly_linked_list/images/solutions/singly_linked_list_reverse_between_left_and_right_solution_4.png is excluded by !**/*.png
  • datastructures/linked_lists/singly_linked_list/images/solutions/singly_linked_list_reverse_between_left_and_right_solution_5.png is excluded by !**/*.png
  • datastructures/linked_lists/singly_linked_list/images/solutions/singly_linked_list_reverse_between_left_and_right_solution_6.png is excluded by !**/*.png
  • datastructures/linked_lists/singly_linked_list/images/solutions/singly_linked_list_reverse_between_left_and_right_solution_7.png is excluded by !**/*.png
  • datastructures/linked_lists/singly_linked_list/images/solutions/singly_linked_list_reverse_between_left_and_right_solution_8.png is excluded by !**/*.png
  • datastructures/linked_lists/singly_linked_list/images/solutions/singly_linked_list_reverse_between_left_and_right_solution_9.png is excluded by !**/*.png
📒 Files selected for processing (2)
  • datastructures/linked_lists/singly_linked_list/README.md
  • datastructures/linked_lists/singly_linked_list/single_linked_list.py
🧰 Additional context used
🧬 Code graph analysis (1)
datastructures/linked_lists/singly_linked_list/single_linked_list.py (1)
datastructures/linked_lists/singly_linked_list/node.py (1)
  • SingleNode (4-10)
🪛 LanguageTool
datastructures/linked_lists/singly_linked_list/README.md

[style] ~721-~721: Three successive sentences begin with the same word. Consider rewording the sentence or use a thesaurus to find a synonym.
Context: ...mmy to point to the head of the list. - We initialize a pointer, prev, to the dumm...

(ENGLISH_WORD_REPEAT_BEGINNING_RULE)

[style] ~732-~732: Three successive sentences begin with the same word. Consider rewording the sentence or use a thesaurus to find a synonym.
Context: ... beginning of the reversed sublist. - We update prev.next to next_node, adjustin...

(ENGLISH_WORD_REPEAT_BEGINNING_RULE)

[style] ~754-~754: Three successive sentences begin with the same word. Consider rewording the sentence or use a thesaurus to find a synonym.
Context: ... be reversed by traversing the list. - We set a pointer to the starting node of t...

(ENGLISH_WORD_REPEAT_BEGINNING_RULE)

🔇 Additional comments (2)
datastructures/linked_lists/singly_linked_list/single_linked_list.py (2)

371-441: Minor docstring improvement: consistency in punctuation.

Docstring updates from "left & right" to "left and right" improve consistency with professional documentation standards.

442-509: Excellent addition of inline comments for clarity.

The new comments in reverse_between_with_dummy effectively clarify each step of the algorithm, particularly the edge-case handling when left = 1 and the pointer adjustments during reversal. These comments align well with the documented algorithm in the README and enhance code maintainability.

@BrianLusina BrianLusina merged commit e983f02 into main Jan 5, 2026
6 of 8 checks passed
@BrianLusina BrianLusina deleted the refactor/linked-list-reverse-between-left-and-right branch January 5, 2026 06:25
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