Create PathfindingVisualizer.java - #6

Advanced pathfinder visualizing three AI search algorithms on interactive grid with real-time animation and efficiency analysis.

Description

Brief description of what this PR implements or improves.

Type of Change

• New algorithm implementation
• Code improvement/optimization
• Bug fix
• Documentation update
• Test cases addition
• Refactoring

Language

• Java
• Python
• JavaScript
• TypeScript
• C++
• C#
• Go
• Rust

Problem Category

• Arrays & Strings
• Linked Lists
• Trees & Graphs
• Sorting & Searching
• Dynamic Programming
• Greedy Algorithms
• Backtracking
• Other (please specify)

Problem Details

• Problem Name: [e.g. Two Sum, Binary Search]
• Difficulty: [Easy/Medium/Hard]
• File Added/Modified: [e.g. TwoSum.java]

Time/Space Complexity

• Time Complexity: O(?)
• Space Complexity: O(?)

Approach

Brief explanation of your approach and algorithm used.

Testing

• I have tested my solution locally
• I have included test cases in my implementation
• My solution handles edge cases appropriately
• I have verified the solution works with the provided examples

Checklist

• My code follows the repository's coding standards
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation (if applicable)
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

Screenshots (if applicable)

If your changes affect the UI or add visual elements, please add screenshots.

Additional Notes

Any additional information about your implementation or suggestions for reviewers.

Related Issues

Closes #[issue number] (if applicable)

Note: Please ensure your code is properly formatted and follows the repository's contribution guidelines.