mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-12-27 21:45:42 +00:00
30 lines
1.1 KiB
C++
30 lines
1.1 KiB
C++
/*=============================================================================
|
|
Copyright (c) 2011-2016 Bolero MURAKAMI
|
|
https://github.com/bolero-MURAKAMI/Sprout
|
|
|
|
Distributed under 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)
|
|
=============================================================================*/
|
|
#ifndef SPROUT_ALGORITHM_CXX14_RANDOM_SHUFFLE_HPP
|
|
#define SPROUT_ALGORITHM_CXX14_RANDOM_SHUFFLE_HPP
|
|
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/algorithm/cxx14/iter_swap.hpp>
|
|
|
|
namespace sprout {
|
|
//
|
|
// 25.3.12 Random shuffle
|
|
//
|
|
template<typename RandomAccessIterator, typename RandomNumberGenerator>
|
|
inline SPROUT_CXX14_CONSTEXPR void
|
|
random_shuffle(RandomAccessIterator first, RandomAccessIterator last, RandomNumberGenerator&& rand) {
|
|
if (first == last) {
|
|
return;
|
|
}
|
|
for (auto it = first + 1; it != last; ++it) {
|
|
sprout::iter_swap(it, first + rand(it - first + 1));
|
|
}
|
|
}
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_ALGORITHM_CXX14_RANDOM_SHUFFLE_HPP
|