======
  *[[http://www.cs.purdue.edu/homes/xyzhang/fall08/hw1.pdf|Homework One.]][[http://www.cs.purdue.edu/homes/xyzhang/fall08/hw1_solution.pdf|Solution.]]
  *[[http://www.cs.purdue.edu/homes/xyzhang/fall08/hw2.pdf|Homework Two.]][[http://www.cs.purdue.edu/homes/xyzhang/fall08/hw2_solution.pdf|Solution.]]
  *[[http://www.cs.purdue.edu/homes/xyzhang/fall08/hw3.pdf|Homework Three.]][[http://www.cs.purdue.edu/homes/xyzhang/fall08/hw3-solution.pdf|Solution.]]
  *[[http://www.cs.purdue.edu/homes/xyzhang/fall08/hw4.pdf|Homework Four.]][[http://www.cs.purdue.edu/homes/xyzhang/fall08/hw4-solution.pdf|Solution.]]
  *[[http://www.cs.purdue.edu/homes/xyzhang/fall08/hw5-solution.pdf|Hw5 Solution.]]