When I took Udacity's online intro to computer science, I also took an into to computer science at a university in person. They do not compare. Udacity was far simpler and just touched the basics.
Unless they updated it to be more robust, Coursera's intro courses are more in depth and some go into theory as well.
Unless they updated it to be more robust, Coursera's intro courses are more in depth and some go into theory as well.