I need to create a variable-sized two-dimensional coordinate system. What I've been able to come up with so far is:
Vecto开发者_高级运维r<Coordinate> board = new Vector();
for ( int count = 0; count < num_rows; count++ ) {
board.add(new Vector(num_cols));
}
How do I access the elements within this multi-dimensional vector? I have tried doing board[row][col]
but this didn't seem to work.
I'm familiar with using Vectors in C++, but can't seem to figure out how to do this in Java.
http://download.oracle.com/javase/6/docs/api/java/util/Vector.html
You need to use .get(index_number) so that becomes board.get(row).get(col)
I don't get how you are adding a Vector into a Vector of Coordinates. You might try something like List<List<Coordinate>> board. Then use board.get(1).get(2) to get a position.
What you really might try is the Guava Table. http://docs.guava-libraries.googlecode.com/git-history/release09/javadoc/index.html
Then it would be:
Table<Integer, Integer, Coordinate> board;
board.put(1, 2, new Coordinate());
A vector in Java is more like a list than an array. To access the element at position 0 in vector v, use:
v.elementAt(0)
or
v.get(0)
Check the documentation
I recommend using two-dimensional array:
Coordinate[][] space = new Coordinate[width][height];
...
Coordinate valuableInfo = space[x][y];
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