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Add unit tests for the "Linked List Cycle" problem. - #29
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Pull Request Overview
This PR adds comprehensive unit tests for the "Linked List Cycle" LeetCode problem (problem 141). The changes improve the codebase by replacing manual testing with proper JUnit test cases and organizing the code structure.
- Adds comprehensive JUnit test cases covering various cycle scenarios
- Refactors the main solution class to remove manual testing code
- Introduces a reusable ListNode data structure class
Reviewed Changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| LinkedListCycle141Test.java | New test class with 4 test methods covering different cycle detection scenarios |
| LinkedListCycle141.java | Removed main method, added proper package structure and imports |
| ListNode.java | New data structure class for linked list nodes with multiple constructors |
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