I am not a major, but I always felt scared because I thought that data structures, algorithms, and coding tests were difficult subjects for majors. However, in order to get a job, I had to study in the end... So while looking for a lecture, I ended up taking the instructor's lecture. The conclusion is very satisfying. I had to memorize the problems because my skills were lacking, but thanks to the instructor, I was able to study a lot about algorithms and data structures that were unfamiliar to me. What I was particularly satisfied with in the lecture was that even a beginner like me could understand it very well by drawing pictures and explaining how they worked. And I often thought that I lacked the "problem-solving skills" that are necessary for programmers because I couldn't solve those problems at the academy... or that I didn't have the qualities of a developer... but the instructor told me to just memorize the basic algorithms here and there, which was a great comfort. I gained hope that even good people have to memorize the basics... and that problem-solving skills are not innate but are developed. So even if I can't solve the problem right now, I'm just going to memorize the basic algorithms! I've talked too long. For those of you who are non-majors like me and want to get a job at a good company, I highly recommend this course. Don't hesitate and take it! :)