During June 2025, contributed foundational content to the krafton-jungle/KJ-ALGO-BOOK-9-303 and krafton-jungle/KJ-DS-BOOK-9-303 repositories, focusing on algorithm analysis and data structures using Python and Markdown. Developed comprehensive documentation for brute force techniques within recursion, establishing a clear starting point for learners. Implemented and analyzed an adjacency-list-based graph representation, providing rationale for its use over adjacency matrices, especially in sparse graphs. The work emphasized clarity and scalability, supporting future topic expansion and smoother onboarding for engineers and students. No bugs were recorded, reflecting a disciplined approach to content creation and technical communication in algorithm and graph theory domains.