public int [ ] getJC ( ) { int [ ] jc = new int [ getN ( ) + 1 ] ; // jc[j] is the number of nonzero elements in all preceeding columns for ( IndexMN index : indexSet ) { for ( int column = index . n + 1 ; column < jc . length ; column ++ ) { jc [ column ] ++ ; } } return jc ; }
Gets column indices .