During April 2025, mjk10@kaist.ac.kr developed the LeetCode Solutions Library for the DaleStudy/leetcode-study repository, delivering Python implementations for five core algorithmic problems including Contains Duplicate, Two Sum, Top K Frequent Elements, Longest Consecutive Sequence, and House Robber. The work emphasized algorithmic efficiency and clean, reusable module design, establishing a scalable foundation for future problem-solving and team knowledge sharing. By aligning with repository standards and documentation, mjk10 ensured maintainability and consistency across solutions. This initial feature accelerates onboarding and standardizes coding patterns, leveraging skills in algorithms, data structures, and problem solving to support rapid team learning and extension.