During December 2024, Dale contributed to the DaleStudy/leetcode-study repository by developing two core algorithmic features in Java. Dale implemented an anagram checker using hash maps for character-frequency counting, enabling efficient detection of valid anagrams and improving code reuse for similar problems. Additionally, Dale built a dynamic programming solution for the climbing stairs problem, optimizing the approach with a Fibonacci-like recurrence to count distinct ways to reach a target step. The work demonstrated strong skills in algorithm design, dynamic programming, and hash map utilization, with clear commit-level traceability and no reported bugs, reflecting a focused and well-executed engineering effort.