Program Listing for File Permutation.h

↰ Return to documentation for file (src/ompl/datastructures/Permutation.h)

/*********************************************************************
 * Software License Agreement (BSD License)
 *
 *  Copyright (c) 2011, Rice University
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above
 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials provided
 *     with the distribution.
 *   * Neither the name of the Rice University nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 *  FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 *  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 *  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 *  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 *  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 *  ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *  POSSIBILITY OF SUCH DAMAGE.
 *********************************************************************/

/* Author: Mark Moll */

#ifndef OMPL_DATASTRUCTURES_PERMUTATION_
#define OMPL_DATASTRUCTURES_PERMUTATION_

#include <random>

namespace ompl
{
    class Permutation : public std::vector<int>
    {
    public:
        Permutation(std::size_t n) : std::vector<int>(n)
        {
            permute(n);
        }
        void permute(unsigned int n)
        {
            if (size() < n)
                resize(n);
            for (unsigned int i = 0; i < n; ++i)
                operator[](i) = i;
            std::shuffle(begin(), begin() + n, generator_);
        }

    private:
        std::mt19937 generator_;
    };
}  // namespace ompl

#endif