Contributed to the DaleStudy/leetcode-study repository by developing practical solutions for LeetCode Week 02 problems using Kotlin, with a focus on algorithms and data structures. Delivered clean, testable implementations for challenges such as Climbing Stairs, utilizing dynamic programming, and Valid Anagram, leveraging frequency maps for efficient comparison. Also implemented an optimized solution for Product of Array Except Self, applying a two-pass approach with O(n) time and O(1) extra space complexity. Throughout the month, emphasized clear commit messages and maintainable code, strengthening the repository as a resource for interview preparation and algorithmic problem-solving in Kotlin. No major bug fixes recorded.