not as good as the previous ones in the specialization.

Quite difficult

Pros:

There are a lot of interesting subjects - the basics of the cryptography (the Caesar cipher, the vigenere cipher), the practical use of the markovs model to generate funny texts, some basics with image filtering and if you dont use course IDE blueJ and duke libraries and found how to do this thing with java core - it will be more profitable.

Cons:

Using custom libraries is very bad for students. We must study java core not some custom libraries.

BlueJ also is a bad choise, even the notepad or the vim are better for understanding the compilation process.

Several tasks and questions are hardly to understand since they are badly formulated.

Also there is no peer reviewed assignments.

Two of the weeks were really complicated, confusing and badly explained. Made me feel that I did not learn enough in the last courses when in fact the problem was this course itself. They need to improve the explanations as it is the most complicated course and the videos are short and unclear. More videos, more explanations for the exercises, and more efficient mentors at the forums when we have questions is a must if you want 5 stars.

Stuck in one and couldn't`t continue. For a four month my problems hasn't`t been solved

Bad sources formatting, bad codestyle and bad project design

week 2 quiz is broken

week 2 is broken

Sometimes the quiz instruction is not very clear. Sometimes, I could get the assignment results, pass the practice quiz, but couldn't pass the review quiz.

So bad, I really don't understand the concepts introduced in this course.

The practices are very unclear. I was stuck for hours!