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Message:

need sparse matrix in java

Posted by Chet Underwood, Esq. on December 13, 2001 at 2:08 PM

"not array , because array taked alot of memory" -- wow, I didn't realize they were teaching Java in 2nd grade these days.

Anyhow, you could use a Map, such as HashMap and make a key object which contains the array dimensions (how ever many there are).

> > > Hi, does anybody know a link or a sourse for informaion about the following this subject. (It's jsut a school assignment)
> > > i need to implement a class to deal with a large 2D arrays(matriicies) called sparse matrix, we use to LinkedLists to save the object's in it (not array , because array taked alot of memory)
> > > the class should have methods, to add, remove, set value, to the matrix, also get value for Row,column element....

> > > thank you