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You're welcome - I'm glad you've got it figured out.

In some ways having instance variables can be a menace: as you've found they retain a "memory" from call to call. It's probably best to...

Did you try the three lines I added at the start of main()?

The output I get is:



0 --> 1
1 --> 1
2 --> 2
3 --> 12

What problems? (Describe both the actual and intended behaviour of your program).

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It's a good idea to keep to Java coding conventions: start package names, methods and variables with a...