Trouble understanding programing question.

Hey guys,
Got a program im supposed to write its bonus and I have already done the original program. Problem is Ive read the instructions and they are kinda confusing to me. If I could just understand what they are saying then it will make this much easier. So if anyone can shed some light on what im missing id be thankful.
Heres the program instructions.
Question 2: Design and implement a recursive method that implements the factorial method n!. The factorial method n! is defined by
n!= n*(n-1)*(n-2)*�*1
Place the method in a class that has a main that tests the method.
Does this just mean I need to make a method that finds the factors of a variable (e.g the factors of 10)? Which would be 2 and 5 right? Or would this mean make a recursive method that finds the factors of 10*n. like 1 * 10 = 10, 2 * 10 = 20, 3 * 10 = 30 etc etc.... And Im guessing that that algorightm cant be used in a program. In other words the *....*1 and n! are not correct syntax and that algorithm is just a abstract example to give me some direciton im not actually supposed to try and replicate it exactly as it is right? Usually I dont have problems with instructions but this one just confused the hell out of me. Any help would be great thank you. I would have asked the teacher but I thought I understood it and now I dont see the profeesor until the day its due and also she has a foreign accent so its hard for me to understand.
Message was edited by:
venture

No. You have to do the factorial.
3! = 3*2*1 = 6
4! = 4*3*2*1 = 24
etc
You should see a pattern ie 4! = 4 * 3!. In the
question you were given the equation for calculating
it. If you can't do it Google is your friend becuase
it has been done millions of times before.
Slow! Well it is hard to type with these fins.
Message was edited by:
flounderThat makes sense thank you.

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NOTE: Since this is an Apple programming boards and I have limited experience programming on traditional Unix systems (and most of that in college) I will confine my answers to the area I know.
If you had to build a business application that has to allow users to, spell and grammer check, and perform financial calculations, and render the HTML, how would you compare the effort to do this in Windows versus that in Linux, AIX, Solaris or any other Unix operating system?
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Note that this scenario assumes the user has Microsoft office installed. The person argues that they don't have to purchase libraries to program but what they are effectively doing is simply transferring that cost to user. I don't have to purchase libraries but everyone of my users needs to. Good for you, very good for Microsoft but bad for your customer - IMHO. OK, I know "But all Windows business users have Office installed already." When it comes free with the system then I'll retract my objection.
Under OS X and Cocoa many of these functions are intrinsic to the system layer and do not require any applications to be installed. Using Cocoa you can write a simple Word processor that has rulers, full font manipulation (including kerning, spacing and leading), Document Save and Load, Printing, Export to PDF as well as spell-checking in under 10 lines of actual code. Adding a custom file type and icon for full system integration will add another 5 minutes to your programing.
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I won't include the link to the 1 line web browser you can build in Cocoa using Webkit because it's shorter than the description. Feel free to search for it if you want to.
HONESTLY tell me and others reading this thread how you would go about create the customized business application I described above by yourself in a Unix instead of Windows, and tell us how many MONTHS or YEARS it would take you, or how you would have to BUY some other third party libraries to do what Word, Excel, and IE!
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