Extra Credit

• 20 pts - For extra credit, use plumbing graphics to animate your original hangman game.
• 15 pts - For extra credit, animate your simulation. You will need two procedures we haven't discussed.
  • (display-graphic g) - takes a graphic object g as its argument and displays the graphic as a side-effect procedure
  • (sleep s) - suspends the interpreter for s seconds
• 20 pts - For extra credit, speed up your add-word procedure by sorting your database by word length and using binary search to find where the word to be added would live. You will have to consider how you want to handle words of the same length.