Great coverage for an intro to data structures such as arrays, linked lists, binary trees, heaps, etc. It has a nice balance of quizzes and coding assignments. It isn't rigorous mathematically but provides a good intuitive understanding.

Practical and informative. The topics were presented in a way that made it clear the advantages and disadvantages of each data structure. The instructor did a good job of explaining the properties of trees, heaps, and linked lists.

Instructor provides very clear explanations of the topics. Even though pace is relatively fast, it is not difficult to understand things. In addition, staff monitors forums, and responds to posts very actively. Highly recommended.

Thoroughly enjoyable course. The exercises were thoughtful and stimulating but not overly tough. Prof. Fagen is an exceptional instructor presenting the material in a clear manner. You can really feel how much he enjoys teaching.

This course covers indeed a lot of new material for those not introduced previously to it, but also if you pay enough attention and work on the assignments you will get a lot important knowledge about the topics covered.

Excelent Course! The lectures were very well driven and all challenges were not really hard but ok. Only thing is that the instructor keeps calling algorithms to the data structures haha! Either way, 100% recommended!

Really liked the course. The way instructor helped in understanding the basic concepts of all the ordered data structures and algorithms. Really made sense. Also, the quiz and assignments were helpful too. Big thanks.

The difficulty level and the exercises of the course is very good so that the learner can get a working knowledge of such ordered datastructures. This course is really helpful and needed for students of all levels.

This course was very interesting and a lot of fun. I loved learning about what goes on behind the scenes in some of the widely used data structures. The introduction to run-time analysis is also very approachable

This course challenged me, and I had to really grind on some of the problems; however, I feel I'm really expanding my CS knowledge with every new lesson. Enjoying it, and looking forward to the final section.

My favorite Coursera specialization! Responsive staff, lectures are very clear, assignments are both challenging and educational (closely related to lecture materials). Thank you!

Was a bit fast for me to catch at first, but I eventually got the hang of the pace. Loved the resources the instructor provided. Illinois is lucky to have such a great educator.

Had to do the quizzes before realizing how much was went through in the short video lectures! Very compact and useful course in showing various data structures.

This is one of the best courses I have studied so far, the instructor's way is very easy to understand yet provides in-depth understanding of the material.

Excellent course, excellent teacher. Just the right approach to teaching data structures, Ive seen a few videos in the topic and this course is very good.

Well-taught course! I love the instructor's enthusiasm and great explanations. The exercises are diverse and really help you reinforce your understanding.

V​ery good course, the professor can taught key concept of basic data structure in these short videos very well. Those exercises are also very helpful.

The course is not easy, but really worthy the effort. I learned what I used to think was impossible for me. Great course, the materials are incredible.

Nice course, challenging. A little bit dense and fast though. But I learned a lot of things for a person who has no computer science background.

Very tough but build and sharpen my data structure concepts. It was the first course that taught me the real world examples. i enjoyed it

very nice introduction of data structure like tree, heap, etc. The explanation of the instructor is amazingly concise and neat. Brilliant!

F​antastic introduction to programming fundamentals. The tasks make sure you learn how to code and compile the your code.

The weekly forums were very helpful. Appreciate the effort put in by staff to make the course easily manageable online.

Very good and challenging course. The assignment is too good to understand the logic and classes taught about.

Excellent course content as always, coupled with an engaging and lively instructor and helpful teaching staff!