http://www.cs.washington.edu/education/courses/461/homework/homeworks.html
Homework 2 - Friday, October 11. Solution 2
Homework 3 - Friday, October 18. Solution 3
Homework 4 - Friday, October 25. Solution 4
Homework 5 - Friday, November 1. Solution 5
Homework 6 - Friday, November 15. Solution 6
Homework 7 - Friday, November 22. Solution 7