I've seen a lot of posts saying that self-studying algorithms is enough, so I hesitated to take a lecture, but I'm so satisfied with the lecture that I regret the time I hesitated. In particular, I liked the part where the problem was approached from various angles and the thought process was well revealed in the solution. There are actually many good materials on the Internet about the conceptual parts of algorithms and how to solve problems to improve your skills. However, through the lecture, I was able to properly understand what it meant to see, understand, and follow the actual application of the contents while solving problems. Just listening to the lecture and understanding the contents of the lecture will not make it easy to solve problems right away, but I think you can definitely learn how to solve problems properly. If you have any concerns that your skills are not improving even though you have solved some algorithm problems, as I did, it would be good to check whether you have been solving problems properly through the lecture. In addition, the lecture content is good, but the composition and order are also good. It was really good to learn the algorithms corresponding to the approaches mentioned in the lecture (recursive, brute force, greedy, dp) from the beginning. Lastly, the answers to the questions were so detailed that I read all the answers even though they were not the questions I wrote.

Even though I'm a major, I was weak in algorithms, so I took the class, and now I feel a bit more confident. Thank you!

The content is good and the answers to my questions are good too!

In my opinion, this is the most ideal introduction to coding tests. The lecture materials are also very well-made, so it is good for self-study later. I hope that in the future, like math online lectures, problem-solving sections or advanced concept sections will be made!

Thank you for the great lecture.

I listened to the lecture well. I especially liked the detailed explanation. One thing I would like to say is that the time complexity of each problem is described in detail in the lecture, but I think it would be good if the notes also had detailed explanations.

I bought it after much thought..! It exceeded my expectations. I hope I can use what I learned well and pass the remaining coding tests :) I recommend the lecture!!

This is the best coding test lecture! I've only gotten to about 25% of the course, but I really like how it presents specific methods to improve my skills. I'm currently taking Essential Algorithm 1, and I'm confident that I can conquer the coding test if I follow the instructor's lectures. I'm going to run with the goal of completing the course this year! The detailed answers to my questions were also very helpful. I want to thank the instructor for creating such a high-quality lecture!!

The lecture is the best.. Especially when explaining the concept of combinational algorithms, the relationship between for loops and recursive functions was very good. When solving combinational problems with recursion, I simply added 1 to the index and set the level to set the termination condition, and I solved it. However, since I solved it without fully understanding it, I made mistakes in the implementation, and I thought that recursion itself was too difficult and I didn't want to solve the problem. However, after listening to this lecture, I think I accurately grasped and understood the concept itself. It was a very satisfying lecture to the point that I thought it would have been better if I had taken this lecture sooner. Thank you so much.

Let me write about my subjective feelings. Advantages 1. Good problem selection - It was easy to understand because the problems were selected according to each algorithm. 2. Notion organization - Contents meticulously organized in Notion 3. Various solutions - Not only one method, but also several methods are presented to solve the problem. Disadvantages 1. Language differences (This may not necessarily be a disadvantage because it varies from person to person.) - Since the main development language is JAVA, the coding test is also being prepared in JAVA. - The lecture contains a lot of Python grammar, library usage, and explanations. - In particular, I only learned the solution method in Python and am writing it again in JAVA. (I personally wish there was a JAVA version of the lecture.) 2. Diagrams, stack frames - It would have been better if the explanation was made sequentially using stack frames sometimes. Personally, I realized how good Python is for coding tests after watching the lecture, but since my main language is JAVA, I was preparing the coding test in JAVA, so I was a little disappointed. Of course, I confirmed that the lecture was about Python at first, but the lecture was more detailed than I thought. It seemed like Python took up a lot of the weight. If you use Python, it might be the best lecture. However, for other languages, you should focus on learning concepts and problem solving and implement them yourself. Personally, I felt that the language difference was a bit big, so I was disappointed. However, I felt that the lecture was meticulously prepared, and as I learned, I was able to challenge problems that I had not been able to solve before, so I think I bought the lecture well.