PS8

Problem 1 (NBody): 50 pts
=========================

- Reads the inputs from the command line correctly (3 pts)
- Reads and stores information from universe file correctly (9 pts)
- Draws starfield centered correctly (3 pts)
- Draws particles in positions initially specified by the universe file using the correct image files (5 pts)
- Calculates the force on each particle (10 pts)
- Calculates the new velocity of particles correctly using previous velocity and acceleration (10 pts)
- Calculates new positions of particles correctly using previous position, the velocity, and the time step (10 pts)

Problem 2 (Sudoku): 50 pts
==========================
Part: A Check A Specific Position (24 pts)
- Row check (6 pts)
- Column check (6 pts)
- 3-by-3 box check (9 pts)
- isPossible() written as a method with proper parameters 
  and a boolean value as return (3 pts)

Part B Enumerations (26 pts)
- Repeatedly applying Step 1: enumerate each row; 
  should be able to solve samplesudoku8.txt in addition 
  to samplesudoku1, samplesudoku2, samplesudoku3 (7 pts)
- Repeatedly applying Step 2 (on top of Step 1): 
  enumerate each column; should be able to solve 
  samplesudoku5.txt and samplesudoku7.txt (7 pts)
- Correct enumeration of all three steps: should be 
  able to solve samplesudoku6.txt (7 pts)
- Does not produce runtime errors for samplesudoku4.txt; 
  Does not fall into infinite loop. (5 pts)

Considerations for all parts
=============================
- If pair programming, but one person does not submit individual report (- 5pts)
- Missing header (-5 pts)

- Incorrect filename (-5 pts)

- Failure to compile (-5 pts minimum; we strongly encourage that you compile and test before submission).

- Inconsistent style. Please read the CT elements of style. We will give comments on poor style and may take off a reasonable number of points for poor style.