Worked on establishing the initial codebase for algorithm problem-solving in the hyemi0622/algorithm repository, focusing on creating a Java class skeleton for Week 1 Problem 1. The approach involved designing a basic Java class with a main method that outputs 'HellO', serving as a placeholder to validate the development environment and ensure smooth execution for future problem implementations. Emphasized clean scaffolding and version control, enabling rapid iteration and consistent progress tracking. Utilized Java for class structure and console I/O, with problem-solving as the core skill demonstrated. No bug fixes were recorded, as the work centered on foundational setup and environment validation.