201 sample executables for assignment 2

Here are my own StdDev.class and Diamond.class. You can open them in TextPad (even though they will look like garbage) and run with the usual Ctrl/2.

Please note that there is an ERROR in the handout on standard deviation. The first calculation for sample standard deviation (it's the second equation on page 2) shows n in the denominator. That should be n(n-1).