question: protected void copy2DArray ( int from [ ] [ ] , int to [ ] [ ] ) { for ( int i = 0 ; i < from . length ; i ++ ) { to [ i ] = new int [ from [ i ] . length ] ; System . arraycopy ( from [ i ] , 0 , to [ i ] , 0 , from [ i ] . length ) ; } }
target:  Copies one array of type int[][] to another.