How to deep copy 2 dimensional array (different row sizes)

Question

This is my first question in a community like this, so my format in question may not be very good sorry for that in the first place.

Now that my problem is I want to

Answer 1

I think what you mean is that the column size isn't fixed. Anyway a simple straightforward way would be:

public int[][] copy(int[][] input) {
      int[][] target = new int[input.length][];
      for (int i=0; i