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Diffstat (limited to 'common/utility/PascalTriangle.H')
-rw-r--r-- | common/utility/PascalTriangle.H | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/common/utility/PascalTriangle.H b/common/utility/PascalTriangle.H new file mode 100644 index 0000000..fd7c5e0 --- /dev/null +++ b/common/utility/PascalTriangle.H @@ -0,0 +1,38 @@ +// Copyright 2008, 2009 Brady J. Garvin + +// This file is part of Covering Arrays by Simulated Annealing (CASA). + +// CASA is free software: you can redistribute it and/or modify it +// under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. + +// CASA is distributed in the hope that it will be useful, but +// WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// You should have received a copy of the GNU General Public License +// along with CASA. If not, see <http://www.gnu.org/licenses/>. + + +#ifndef PASCAL_TRIANGLE_H +#define PASCAL_TRIANGLE_H + +#include <vector> + +#include "Array.H" + +class PascalTriangle { +protected: + // A table of n choose r, indexed by n then r. + std::vector<Array<unsigned> > table; +public: + PascalTriangle(); + void addRows(unsigned targetDepth); + unsigned nCr(unsigned n, unsigned r); +}; + +extern PascalTriangle triangle; + +#endif |