During December 2024, Daniel Kim developed two algorithmic features for the DaleStudy/leetcode-study repository, focusing on correctness, performance, and maintainability. He implemented Unicode-aware Anagram Utilities in Java, providing both a HashMap-based frequency counter for broad character support and an optimized array-based solution for lowercase English input. Additionally, Daniel delivered a Climbing Stairs Algorithm Suite, offering both a recursive approach with memoization and a dynamic programming solution to address different space and time requirements. His work demonstrated strong skills in Java, dynamic programming, and string manipulation, with clear, testable code and well-documented interfaces to support ongoing learning and scalability.