During December 2024, Dale contributed to the DaleStudy/leetcode-study repository by developing three core algorithmic features using JavaScript, with a focus on data structures and dynamic programming. Dale implemented solutions for Top K Frequent Elements, Longest Consecutive Sequence, and House Robber, each addressing classic algorithmic challenges. The work emphasized efficient approaches, such as leveraging frequency maps, sets for O(n) lookups, and space-optimized dynamic programming. No bugs were reported, reflecting careful attention to code quality and correctness. Dale’s contributions supported interview preparation and teaching use cases, demonstrating depth in algorithm design and a clear, maintainable coding style throughout the project.