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Start by making a list of the classes needed and the methods that are needed.
classes are for things
methods do something with/for the thing

For example:
The red items would be methods,
the...

Yes, we'll try to help you write the code for your assignment.

What do you have now?
Do you have any specific questions about the problems you are having?
Work on one problem at a time. When...

It looks more like a programming assignment than a question.
What have you tried? Do you have any specific questions about the assignment?