Textbook
The textbook for Computer Science 20 in spring 2010 will be Introduction to Algorithms, third edition, by Cormen, Leiserson, Rivest and Stein, MIT Press, 2009. The ISBN is 978-0-262-03384-8. Please note that this is a newer edition than the text previously used in COSC 20 and 30. We will use the new edition in next fall's COSC 30, so one book will cover both classes. The price at Amazon appears to be about $59.