HW0918  Measuring n^2 programs

Write 3 different n^2 programs.
For each program:
   Take time measurements at various dataset sizes.
   Plot the measured points.
   Fit a second order polynomial to the data points
   Graph the fitted polynomial on the same graph as the measured times
   
You can plot all curves on the same graph if you wish.

Turn in source code, measurements, and graph(s).