Contributed to the DaleStudy/leetcode-study repository by developing Java solutions for five LeetCode algorithm problems as part of a structured weekly study series. Focused on practical algorithmic challenges such as Two Sum, House Robber, and Top K Frequent Elements, the work leveraged core skills in algorithms, data structures, and dynamic programming. Implementations utilized Java features including HashMaps, HashSets, and Java Streams to ensure efficient and readable code. Additionally, improved repository maintainability by addressing formatting issues, which enhanced code readability and diffs. Established a repeatable workflow that supports ongoing algorithm practice and long-term interview preparation within the repository.