Great course with clear level of difficulties laid out for each sub courses. But the course content jumped between cryptography and other materials making things hard to remember.

The assignments were not clear and I didn't know if i should go back and use my Caesar code to get some of the answers for the assignment. it would be nice to hint a bit more

Maybe this course for me are the most difficult, but the teachers, the teaching method and the spirit of Coursera in the mate´s class are the best.

6th question in final quiz is really hard for non native english speakers. Please avoid questions with multiple selection and with lots of text.

Some concepts used in Week 2 were introduced/ explained in more detail in Week 3 so I struggled in Week 2 but Week 3 was a breeze.

Useful and helpful, a millstone in the specialization path, but not so preferable if you only enroll this single course.

The final quiz has 3 difficult questions for which I could not find a good answer. Luckily my guesses were good enough.

Good course but not much help is available to complete assignments and hints are not very helpful when taking quizzes

Hope the mentor can be more responsive on forum, as the quiz is getting tougher and need more help on it

It would be helpful if explanations of the problems in the quiz were made available after passing them.

A nice course on cryptography. Learned many new data structures like HashMap, HashSet and ArrayList.

Great course. Learning Java Data Structures and Cipher encryption was fun.

Good material and problems

It is a good start for Java programming. Is very much practice oriented and the videos are clear.

One of the most **practical** Java programming courses that I've ever taken.

Thank you so much.

A pretty challenging and engaging course which taught me a lot of new concepts of Java!

This course is useful, the teachers have step by step directions to easy understand.

Excellent course to learn about Structured Data. Challenging exercises and quizes.

Great for learning about arrays, web logs, list, array lists and structured data.

Insufficient detail paid to how syntax works inside programming exercises.

Challenging, though I seemed to do more than was required. Great course.

Level of support and quality of content went down from Course 1 and 2

Week 2 was wayyy too difficult but everything else was just right.

They teach very nicely and make your doubts clear.

I have a problem to complet one of the last tests.

learned many new things and was a good challenge