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Re: JAVA MathSET API

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On Friday, March 21, 2014 1:35:04 AM UTC+4, Eric Sosman wrote:
> On 3/20/2014 4:39 PM, Kai wrote:
> 
> > On Thursday, March 20, 2014 10:39:46 PM UTC+4, Eric Sosman wrote:
> 
> >> On 3/20/2014 1:34 PM, Kai wrote:
> 
> >>> On Thursday, March 6, 2014 10:13:46 PM UTC+4, Kai wrote:
> 
> >>>> I want to implement a mathematical set of strings using the JAVA API MathSET.
> 
> >>>> Is there anything you can suggest for this implementation.
> 
> >>>
> 
> >>> I meant the type of set where we have union, intersection, etc.. I need to implement it using "mathSET API". Hashing also will be involved. Anyone can help for the implementation please?
> 
> >>
> 
> >>       What's your difficulty?
> 
> >>
> 
> >>       If by "JAVA API MathSET" you mean the class documented at
> 
> >> <http://math-it.org/java/docs/org/mathIT/algebra/MathSet.html>,
> 
> >> it looks like everything you ask is already done: Just grab the
> 
> >> class and start using it.
> 
> >>
> 
> >>       If by "JAVA API MathSET" you mean some other class, tell us
> 
> >> what other class you mean and where we can find out about it.
> 
> >>
> 
> >>       ... besides which, the included-with-Java classes that
> 
> >> implement the java.util.Set interface already provide union and
> 
> >> intersection via the addAll() and retainAll() methods, respectively.
> 
> >>
> 
> >>       So, again: What problems are you having?
> 
> >
> 
> > You really helped, thanks. I'm starting having ideas on it now. But, frankly, I am kind of new to these types of data structures and don't know how to use the documentation(still learning stage), like the link you sent. I need a small example on how to implement using the documentation, e.g for the superset or subset. Then I'll be able to complete the remaining methods. :/
> 
> 
> 
>      You *still* haven't described what you're trying to do!  What
> 
> do you mean by "the superset," for example?  You probably don't
> 
> want to enumerate all supersets of a given set, which would require
> 
> infinite time.  If you're trying to test whether set S1 is a superset
> 
> of set S2, just find their intersection and compare its size to S2's.
> 
> 
> 
>      Also, you *still* haven't explained what kind of difficulty you
> 
> are having!  The documentation for the Set interface and for the
> 
> MathSet class seem clear enough; what can I add to what they've
> 
> already told you?
> 
> 
> 
>      (Surmise: Kai, do you know how to write Java?  If you're just
> 
> starting to learn the language, a "small example" isn't going to
> 
> be a whole lot of help ...)
> 
> 
> 
> -- 
> 
> Eric Sosman
> 
> esosman@comcast-dot-net.invalid

Yes, sorry for not able to express myself well. I meant to do this type of subset implementation, as you mentioned above. My issue is that I need to know how to represent an implementation of the given set interface.
I've studied OOP in java, I'm new to structures. I think you're right Eric, I should start from some basics of data structures. Is there any ref. you can suggest please?

Thanks

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Thread

JAVA MathSET API Kai <indivarf11@gmail.com> - 2014-03-06 10:13 -0800
  Re: JAVA MathSET API Martin Gregorie <martin@address-in-sig.invalid> - 2014-03-06 20:53 +0000
    Re: JAVA MathSET API Jeff Higgins <jeff@invalid.invalid> - 2014-03-06 16:19 -0500
      Re: JAVA MathSET API Lew <lewbloch@gmail.com> - 2014-03-12 18:04 -0700
        Re: JAVA MathSET API "Qu0ll" <Qu0llSixFour@gmail.com> - 2014-03-13 13:19 +1100
  Re: JAVA MathSET API Jeff Higgins <jeff@invalid.invalid> - 2014-03-06 16:01 -0500
  Re: JAVA MathSET API Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-03-06 20:24 -0500
  Re: JAVA MathSET API Kai <indivarf11@gmail.com> - 2014-03-20 10:34 -0700
    Re: JAVA MathSET API Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-03-20 14:39 -0400
      Re: JAVA MathSET API Kai <indivarf11@gmail.com> - 2014-03-20 13:39 -0700
        Re: JAVA MathSET API Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-03-20 17:35 -0400
          Re: JAVA MathSET API Kai <indivarf11@gmail.com> - 2014-03-21 00:34 -0700

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