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heap_sort.h
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heap_sort.h
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// Copyright (c) 2013 Craig Henderson
// https://github.com/cdmh/sorting_algorithms
#pragma once
#include "sort.h"
#include <algorithm> // make_heap
namespace cdmh {
// Heap Sort
// Worst case performance O(n log n)
// Best case performance Omega(n), O(n log n)
// Average case performance O(n log n)
// Worst case space complexity O(n) total, O(1) auxiliary
// http://en.wikipedia.org/wiki/Heapsort
template<typename It, typename Pred=std::less<typename std::iterator_traits<It>::value_type>>
inline void heap_sort(It begin, It end, Pred pred=Pred())
{
std::make_heap(begin, end, pred);
std::sort_heap(begin, end, pred);
}
} // namespace cdmh
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.