LeetCode-238(chore): cleanup special cases in loops

[WazedKhan]

Summary by CodeRabbit

• Refactor
  • Refactored the product-except-self algorithm to use a standard prefix/postfix approach for improved code clarity and consistency. Edge cases are now handled uniformly through a single computation loop, simplifying the overall logic.

[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: 93565c0f-cbab-4dc0-a31d-b4c970c547ae

📥 Commits

Reviewing files that changed from the base of the PR and between 536f305 and 14389a9.

📒 Files selected for processing (1)

• LeetCode/medium/product_except_self_238.py

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📝 Walkthrough

Walkthrough

The productExceptSelf function in LeetCode problem 238 is refactored to use a cleaner prefix/postfix approach with identity boundaries. Prefix and postfix arrays now initialize with 1 and apply uniform recurrence relations; output construction simplifies to a single loop multiplying prefix and postfix values at each index, eliminating prior edge-case branching.

Changes

Product except self refactoring

Layer / File(s)	Summary
Prefix/postfix computation and output generation LeetCode/medium/product_except_self_238.py	Prefix and postfix arrays are recomputed using identity boundaries and uniform recurrence relations. Output generation is unified to multiply prefix[index] × postfix[index] for all indices, removing prior special-case logic for first and last elements.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Poem

A rabbit's algorithm springs to life,
Prefix and postfix end the strife,
No special cases, just clean and neat,
Boundaries of one make logic sweet! 🐰✨

🚥 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 'cleanup special cases in loops' accurately describes the main refactoring objective of removing special-case logic for first/last elements and simplifying to a single unified loop.
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.

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✨ 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 leecode-238-product-expect-self-cleanup

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