code: public static ColumnMajorSparseMatrix fromMatrixMarket(InputStream is) throws IOException {
          return Matrix.fromMatrixMarket(is).to(Matrices.SPARSE_COLUMN_MAJOR);
      }
docs: Parses {@link ColumnMajorSparseMatrix} from the given Matrix Market.
  
  @param is the input stream in Matrix Market format
  
  @return a parsed matrix
  @exception  IOException  if an I/O error occurs.