Your first homework is to install Scala on your computer, and make sure that you can run a Scala script.
Please follow the installation instructions. Make sure that you also install ScalaTest and cs109ui into your system Scala directory as explained in the instructions!
(If you took CS109 before, you will already have Scala on your computer. Please make sure to install ScalaTest and cs109ui as explained in the instructions—this is different from what we did in CS109!)
At the end, you should be able to download mastermind.scala, open it in NotePad (or another text editor), and run it from the command line.
If you have difficulty understanding the command line, please read the command line tutorial.
If you have any difficulties with the instructions (or with the contents of the tutorials), then come to the office hour: Wednesday 16:00 to 17:30, or Thursday 20:00 to 21:30, in room 403 in N1.