Avoid him. The class started off good, doesn't show how to implement trees / binary trees / hashmaps and starts explaining beyond scope of the course data structures instead of showing implementation for things that are important LIKE HASH MAPS. Messes up frequently, has to reexplain. Gives hard projects that 60% of the class couldn't complete.

From day one, Alex was not prepared to teach 313. Alex is currently a fulltime undergrad student "I took this job so I can brush up on Data Structures for my coding interviews." He repurposed Waxman's 381 C++ projects, without ever TEACHING us HOW to implement any of the data structures. Unacceptable for the department to let him teach 313. Avoid!

Avoid if possible. He is knowledgeable, but that don't mean he can teach. He expects you to do a project that he don't even TEACH you the approach or concept. Spends too much time on some very simple concepts. Messes up a topic frequently, then reexplains the topic again with the same words. Honesly do not how department allows him to teach 313.

AVOID!!! NOT RECOMMEND TAKING!!! I dont know why there are so many good comments on him when the fact is that he doesnt really know how to lecture and explain new concepts. He gets annoyed when students interrupt him to ask a question, and his projects are meant to fail those who take him. He makes you reconsider your major.

He is a NO for me. Projects and exams are hard because he doesnt really teach you the concepts needed. He just quickly goes over the concepts and you need to figure out the rest. You really need to look at the likes and dislikes on those good comments because he isn't really that good. What you see doesnt mean what it is. Avoid if possible.

WORST PROF IN CS... hard to understand because of his accent. Good luck if you are going to take him.

Dont even try to argue with him because he is always right. A friend recommended me to take him but I dont think he is teaching me anything.

Save yourself some time if you want to take him for 313 because you are not going to learn anything from him.

easy course,but his lectures wont help you in the future. Interview quesions are way more challenging.

Not a good professor, he comes to class half the time talking about his own life. There is no review sheets for the class and his exams questions are very hard.

You are not going to learn anything. So many personal stories going on. Dont waste your time on him.

He curves, which is supposed to be a good thing, but it actually does not make any difference because most of the class get only 50-60 out of 120. Exams are unreasonable.

Avoid no matter what. The syllabus he gives out makes this course an easy A, but I AM TELLING YOU that there's no way for u to get an A out of this course. He gives you very little time to finish a project which will cost you more than a week to complete. He allows late submission, but no more than 3 days. After 3 days, you are done.

Take him if you think GPA does not matter.

Awful prof. All he wants from you is to drop this course.

No need to go to class since you are not going to understand a thing or two, and he expects you to learn all the material in one lecture.

I will never take this professor again! He is not understanding for students circumstances even telling his ahead of time. He grades very hard and picky. He is very rude and will call students out for asking reasonable questions.

at first I liked him but as the semester went on my liking went straight down. He treated us like we were in high school. He'd call students out for their mistakes and make a big deal if you let him know in advance that you wouldnt be able to attend a class. No grades were ever posted so you wouldnt know how you were doing in the class.

Very unorganized lectures, goes on tangents that dont make sense. Insanely lecture heavy and not understanding. If you dont understand something he will not take the time to explain it. Would not recommend this class to anyone.

Dont take him. You will end up failing.

data structure is a very important topic in CS, so you want to learn something from it, but he does NOT teach you anything useful but some theoretical concepts which you will prob not be using outside of this class. He is a NO to me.

Hw is easy, but exams are totally another level. Curves won't help you that much if you do bad on one of them.

Regretted taking him. His course was the first course that I ever dropped in college. Im going to take other professor next semester.

Definitely one of the worst professors in cs department.

The moment I looked at his syllabus, I knew I was not going to learn anything from him. And luckily, there was a guy taking Maxwell wanted to swap over, so I did. Maxwell is a lot better than he is. The guy who swapped the course with me regretted swapping too because he really S U C K E D at teaching.

Just AVOID him if possible. He is there to fail you without reasoning, and if you fail (which you most likely will with him), you will need to spend another semester to retake 313. Remember, if you dont pass 313, you will not be able to take any more 300+ courses.

Do yourself a favor. Avoid him. He is unorganized and his lectures are confusing. Yea, exams are based on what you learn from the lectures, but you need to understand them first if you want to do well on exams. How are u going to understand if they are not meant to be understood?

You need to put in a lot of work and efforts if you really want to do good on his course. Let me give a good metaphor of how his lectures look like. You learn addition and subtraction in lectures, but the exams are asking you to solve multiplication and division problems. SO GOOD LUCK! You have to know some data structure stuff before taking him.

Bruh... his lessons and exams are unreasonably hard. Do not think this is going to be an easy course because he makes you reconsider taking cs as your major.

This course should be easier if he follows the department's instruction, but he NEVER does. No one wants to know his personal stories. It got kind of tiresome when he goes off the topic.

His accent is incredibly strong, so you really need some time to get used to it.

GOOD LUCK taking him, the worst cs prof ever in QC. Lots of HW, and exams are mad hard. The worst thing is that what you learn in class and the hw are totally different from what you going to do in the exams.

Concepts that are not that bad in this class become complicated thanks to the way Chen teaches it. His class is boring and you come out more confused if you decided to learn the material beforehand and show up to class.

He has a terrible teaching style, fills the board with intelligible, weakly structured, on-the-fly info. He follows an almost identical teaching-style to a certain 211 professor but luckily doesn't follow similar test format.

His lectures are diluted with uncalled garb. His voice is unpleasant and tell bad jokes to keep everyone's attention. The best way to do well in his course is to AVOID going to lectures. Work on his previous exams at least 2 weeks in advance. Do this and you'll get an easy B.

Really awful teacher with an awful way of teaching.

His lecture is not clear and the notes on the blackboard are hard to tell. You have to do the Problem books by yourself. The exams are hard and not enough time to finish. You are basically on your own to teach yourself the materials.

DO NOT TAKE THIS PROFESSOR. HE IS VERY RUDE IN HIS EMAILS. HE GIVES HARD HOMEWORK WHERE YOU NEED TO FIND ANSWERS THAT USUALLY DO NOT MAKE SENSE. IF YOU WANT A LIVING HELL OF A CLASS THEN THIS IS THE RIGHT CLASS FOR YOU

Do not take him if you want to save your grade. I wish i dropped this class.

Unclear in his lectures, boring and does not facilitate good discussion during the lecture.

I wish I could rate him 0. Guys, I am begging you to here other professors, any other but not him. I don't want to stress how important data structure is in terms of programming as well as your computer science career. He doesn't teach you the knowledge you need to become a real programmer, but rather talks about his own life WHICH WE DO NOT CARE!

He's going to hurt you GPA so badly. DO take him if you want your GPA get down to 3.0.

horrible lectures... He does not know what he is teaching sometimes.

There is no doubt that he is unorganized. He doesn't assign the assignment on time. We haven't got any of our assignments and quiz grades back. Basically, we don't know how we did on the assignments and quizzes. He is good at explaining the logic behind the topic but If you don't understand something, he will not take the time to explain it.

Very disorganized during class and during remote learning. Does not come prepared with any materials. Goes off topic way too many times by saying crap about his coworkers in amazon. He doesn't like it when students ask him questions because he has troubles explaining the topic clearly. Really weird stuff with him and "social media."

His lectures consist of him reading definitions off google. I thought he was an ok Professor, but then one day he forgot that he left his camera on after our class. A few students and I were still in the room and I lost so much respect for Alex. Check youtube because the other students posted what he was doing after class and it was disgusting.

Clearly, he just graduated and didn't know much himself. He teaches here as a way to make some easy money and did not want to spend time on either preparing for classes or reviewing homework or exams. He cancelled several classes. He should pay our tuition back personally. He just went through some shallow definitions. Disappointed and disgusted

Sometimes, he doesn't know what he's talking about. And he curses a lot during classes, which is not cool at all. Don't understand why QC hires someone who apparently is not knowledgable enough to teach this course. A total waste of time and tuition. Please help yourselves by choosing better ones!

He uses a lot of profanity in lectures, which is definitely off the mark for a Professor. He's cancelled three classes so far this semester. He cancelled our second project but is still going to quiz us on the material like he did for project 1. Not organized and "eh" conceptual explanations. Maybe he focuses more on his career at Amazon.

HE JUST obtained his bachelor degree in CS not more than 2 year ago. How could you expect someone like this know a lot more than you?!!!! WORST EVER!!! PLEASE don't call him a professor, he doesn't deserve it. AND CLEARLY he doesn't respect others enough by not putting efforts for classes or organizing logically

Thank god he left qc. Had him a while back. He is the only professor in this entire world that makes you convert asymptotic run time into feet. Also he curves you based on shoe size.