Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.java.programmer > #27803

Re: JAVA MathSET API

Show all headers | View raw

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

Back to comp.lang.java.programmer | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

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

csiph-web