转成matlab： nbk.append( column[breaks_row[k-1]+1:].T ) lk = nnz_val[np.sort(sorted_col_args[breaks_col[k-1]+1:])]

nbk = [nbk, column(breaks_row(k-1)+1:end)'];

sorted_col_args = sortidx(column);
nnz_val = find(column);

lk = nnz_val(sort(sorted_col_args(breaks_col(k-1)+1:end)));