How to implement ArrayList as Multidimensional Arrays?

HelloWorld · #1 (**permalink**) 07-30-2007, 09:52 PM

Does anybody know how to do this?
I have to figure out somehow to use ArrayList as multidimensional arrays!

HelloWorld · #2 (**permalink**) 07-30-2007, 09:56 PM

Nevermind, I think I found out about this:

PHP Code:

   ArrayList matrix = new ArrayList();
      matrix.add(new ArrayList());

Note: I haven't tested this. I'll let you know my implementation later

Bench · #3 (**permalink**) 07-31-2007, 08:33 AM

As far as I know, its the same sort of thing in Java as in C++ - in which case, you need to specify types between the angular brackets

Code:

         ArrayList< ArrayList<String> > my_2dlist = 
                new ArrayList< ArrayList<String> >();
         
         my_2dlist.add( new ArrayList<String>() );
         my_2dlist.get(0).add("Hello, World");
         System.out.println(my_2dlist.get(0).get(0));

HelloWorld · #4 (**permalink**) 07-31-2007, 08:45 AM

Quote:

Originally Posted by Bench

As far as I know, its the same sort of thing in Java as in C++ - in which case, you need to specify types between the angular brackets

Code:

         ArrayList< ArrayList<String> > my_2dlist = 
                new ArrayList< ArrayList<String> >();
         
         my_2dlist.add( new ArrayList<String>() );
         my_2dlist.get(0).add("Hello, World");
         System.out.println(my_2dlist.get(0).get(0));

Thanx for the code Bench
I'll try your way out since the code that you provided is much more make sense than what I currently have

Indeed the one that I have is working, but I'm just thinking for the code readability for my future reference

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HelloWorld (07-31-2007)