Two D Array list

[maralfarshadi]

Dear All

Could you please explain or refer some reading material on how to create two dimensional array lists ? and how to access the fields with columns and row indexes ?


Extremely appreciate your help
Maral

[JosAH]

Dear All

Could you please explain or refer some reading material on how to create two dimensional array lists ? and how to access the fields with columns and row indexes ?


Extremely appreciate your help
Maral

You can implement a two dimensional list as a list that contains (other) lists:
Since Lists are ordinary objects you can store those Lists in the 'major' list:

List<List<T>> matrix= new ArrayList<List<T>>();
 

kind regards,

Jos

[Ganon11]

List<List<T>> matrix= new ArrayList<List<T>>();
 

Out of curiosity, will you have to insert spaces with all those <'s and >'s, e.g.

List< List< T > > matrix= new ArrayList< List< T > >();

I know you have to do this in C++, as the compiler thinks you are using >>, the bit shift operator.

[JosAH]

Out of curiosity, will you have to insert spaces with all those <'s and >'s, e.g.

List< List< T > > matrix= new ArrayList< List< T > >();

I know you have to do this in C++, as the compiler thinks you are using >>, the bit shift operator.

No there's no need to; I know C++ is a bit stupid w.r.t. this, i.e. it uses C's own
lexical analyzer (which is the stupid part); Sun managed to solve this little
idiosyncracy nicely in Java; no spaces are needed here.

kind regards,

Jos