I'm interested in taking some core CS classes online for university credit. I'd be prepared to spend up to $1000 for a great class that will be viewed well by potential employers (but Stanford's $6600 is too much). E.g. I see one can take math classes like Calc I & II at extension.berkeley.edu for $680; where is an analogous Data Structures and Algorithms for example?Note that I want university credit, so I'm not currently considering things like the Princeton class offered via Coursera, for which no credit is available.