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BAN: Implement intro sort

This commit is contained in:
Bananymous 2023-12-07 23:56:11 +02:00
parent d8ea0eeba3
commit 94e6b9fa65
1 changed files with 25 additions and 0 deletions
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25
BAN/include/BAN/Sort.h
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@ -2,6 +2,7 @@
#include <BAN/Swap.h>
#include <BAN/Traits.h>
#include <BAN/Math.h>
namespace BAN
{
@ -100,4 +101,28 @@ namespace BAN
}
}
namespace detail::sort
{
template<typename It, typename Comp>
void intro_impl(It begin, It end, size_t max_depth, Comp comp)
{
if (distance(begin, end) < 16)
return sort_insertion(begin, end, comp);
if (max_depth == 0)
return sort_heap(begin, end, comp);
It mid = detail::sort::partition(begin, end, comp);
intro_impl(begin, mid, max_depth - 1, comp);
intro_impl(++mid, end, max_depth - 1, comp);
}
}
template<typename It, typename Comp = less<typename It::value_type>>
void sort_intro(It begin, It end, Comp comp = {})
{
size_t max_depth = Math::ilog2(distance(begin, end));
detail::sort::intro_impl(begin, end, max_depth, comp);
}
}