I've taken the course from graphs to grids, and while listening to the lectures, I solved 1-2 problems every day. The algorithms were explained in a visually understandable way, which made it easy to grasp, and after learning the code templates, I started to get a sense of how to apply them to solve problems. The coding test tips were especially helpful!! I was really worried because everyone says it's not easy to do coding tests in Java, but thanks to this course, I feel like I've gotten the hang of solving problems. I'll keep listening to the lectures and solving lots of problems..~!!