Java中的2D数组列表

Question

我有一组2D数组，我想将所有2D数组存储到单个列表中，如何在Java中做到这一点？

Answer 1

eg or what do you mean

int[][] a2d = new int[15][15];
int[][] b2d = new int[10][10];
List<int[][]> list2d = new ArrayList<int[][]>(10);
list2d.add(a2d);
list2d.add(b2d);

or do you mean you have a Set<int[][]> then you can simply do what tpierzina suggested

List<int[][]> list2d = new ArrayList<int[][]>();
list2d.addAll(nameOfYourSetVariable);

or

List<int[][]> list2d = new ArrayList<int[][]>(nameOfYourSetVariable);

Answer 2

List<String[][]> myFunc( Set<String[][]> s ) {
  List<String[][]> l = new ArrayList<String[][]>( s.length() );
  l.addAll( s );
  return l;
}

Answer 3

Can't you just pass the set into a list like so:

    int [][]a = new int[3][3];
    Set<int[][]> set = new HashSet<int[][]>();
    set.add(a);
    ArrayList<int[][]> list = new ArrayList<int[][]>(set);

Or am I not understanding your question.