open site row i , column j if it is not already concode_field_sep boolean[][] mat_open concode_field_sep boolean[][] random concode_elem_sep boolean[][] getOpen concode_elem_sep boolean isOpen concode_elem_sep double eval concode_elem_sep void main concode_elem_sep boolean isFull concode_elem_sep boolean percolates concode_elem_sep boolean[][] flow concode_elem_sep void flow
void function ( int arg0 , int arg1 ) { if ( ! mat_open [ arg0 ] [ arg1 ] ) { mat_open [ arg0 ] [ arg1 ] = true ; } }