[kobukuro]

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[Copilot]

Pull Request Overview

This PR adds comprehensive unit tests for the "Path Sum II" problem solution and performs code cleanup. The changes include creating a dedicated test class with multiple test cases covering different scenarios and improving the main solution code structure.

• Adds unit tests with 4 test cases covering different tree structures and target sums
• Removes main method from solution class and replaces it with proper test coverage
• Minor code improvements including better import organization and using removeLast() method

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/test/java/com/leetcode/medium/PathSumII113Test.java	New test class with comprehensive unit tests for the PathSumII113 solution
src/main/java/com/leetcode/medium/PathSumII113.java	Code cleanup including removing main method, reorganizing imports, and minor improvements

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