69 lines
2.2 KiB
Plaintext
69 lines
2.2 KiB
Plaintext
// Copyright Neil Groves 2009. Use, modification and
|
|
// distribution is subject to the Boost Software License, Version
|
|
// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
|
|
// http://www.boost.org/LICENSE_1_0.txt)
|
|
//
|
|
//
|
|
// For more information, see http://www.boost.org/libs/range/
|
|
//
|
|
#ifndef BOOST_RANGE_ALGORITHM_RANDOM_SHUFFLE_HPP_INCLUDED
|
|
#define BOOST_RANGE_ALGORITHM_RANDOM_SHUFFLE_HPP_INCLUDED
|
|
|
|
#include <boost/concept_check.hpp>
|
|
#include <boost/range/begin.hpp>
|
|
#include <boost/range/end.hpp>
|
|
#include <boost/range/concepts.hpp>
|
|
#include <algorithm>
|
|
|
|
namespace boost
|
|
{
|
|
namespace range
|
|
{
|
|
|
|
/// \brief template function random_shuffle
|
|
///
|
|
/// range-based version of the random_shuffle std algorithm
|
|
///
|
|
/// \pre RandomAccessRange is a model of the RandomAccessRangeConcept
|
|
/// \pre Generator is a model of the UnaryFunctionConcept
|
|
template<class RandomAccessRange>
|
|
inline RandomAccessRange& random_shuffle(RandomAccessRange& rng)
|
|
{
|
|
BOOST_RANGE_CONCEPT_ASSERT(( RandomAccessRangeConcept<RandomAccessRange> ));
|
|
std::random_shuffle(boost::begin(rng), boost::end(rng));
|
|
return rng;
|
|
}
|
|
|
|
/// \overload
|
|
template<class RandomAccessRange>
|
|
inline const RandomAccessRange& random_shuffle(const RandomAccessRange& rng)
|
|
{
|
|
BOOST_RANGE_CONCEPT_ASSERT(( RandomAccessRangeConcept<const RandomAccessRange> ));
|
|
std::random_shuffle(boost::begin(rng), boost::end(rng));
|
|
return rng;
|
|
}
|
|
|
|
/// \overload
|
|
template<class RandomAccessRange, class Generator>
|
|
inline RandomAccessRange& random_shuffle(RandomAccessRange& rng, Generator& gen)
|
|
{
|
|
BOOST_RANGE_CONCEPT_ASSERT(( RandomAccessRangeConcept<RandomAccessRange> ));
|
|
std::random_shuffle(boost::begin(rng), boost::end(rng), gen);
|
|
return rng;
|
|
}
|
|
|
|
/// \overload
|
|
template<class RandomAccessRange, class Generator>
|
|
inline const RandomAccessRange& random_shuffle(const RandomAccessRange& rng, Generator& gen)
|
|
{
|
|
BOOST_RANGE_CONCEPT_ASSERT(( RandomAccessRangeConcept<const RandomAccessRange> ));
|
|
std::random_shuffle(boost::begin(rng), boost::end(rng), gen);
|
|
return rng;
|
|
}
|
|
|
|
} // namespace range
|
|
using range::random_shuffle;
|
|
} // namespace boost
|
|
|
|
#endif // include guard
|