During a one-month period, contributed three core utilities to the leetcode-study repository, focusing on algorithmic problem-solving and code efficiency. Developed a containsDuplicate checker for arrays using JavaScript and Map-based frequency tracking to quickly identify duplicates. Built an anagram verification utility that leverages hash maps for character frequency comparison, streamlining string manipulation tasks. Also implemented a dynamic programming solution for the Climbing Stairs problem, enhancing the repository’s collection of algorithmic approaches. All features were delivered without reported bugs, reflecting careful implementation. Work demonstrated proficiency in JavaScript, data structures, and dynamic programming, supporting improved workflow and code reuse for study purposes.