This is what I felt after completing the course. I really recommend it to those who are starting to learn algorithms in Java. At first, I was worried that the lecture quality would be poor because the price was cheaper than other algorithm lectures, but the lecture was very easy to understand and good because the teacher's interesting way of speaking and the lecture followed each index. (Especially DFS and BFS are great lectures) And it was too hard when I tried to study from a book, but I think online lectures are good when learning other people's solutions. I wish the teacher would publish an intermediate version of Java algorithms.