std::iter_swap
cppreference.com
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template< class ForwardIt1, class ForwardIt2 > void iter_swap( ForwardIt1 a, ForwardIt2 b ); |
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| a, b | ||
-ForwardIt1, ForwardIt2 ForwardIterator.
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-*a, *b Swappable.
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()
template<class ForwardIt1, class ForwardIt2>
void iter_swap(ForwardIt1 a, ForwardIt2 b)
{
using std::swap;
swap(*a, *b);
}
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C++
#include <random>
#include <vector>
#include <iostream>
#include <algorithm>
#include <functional>
#include <iterator>
template<class ForwardIt>
void selection_sort(ForwardIt begin, ForwardIt end)
{
for (ForwardIt i = begin; i != end; ++i)
std::iter_swap(i, std::min_element(i, end));
}
int main()
{
std::random_device rd;
std::mt19937 gen(rd());
std::uniform_int_distribution<> dist(-10, 10);
std::vector<int> v(20);
generate(v.begin(), v.end(), bind(dist, gen));
std::cout << " : ";
copy(v.begin(), v.end(), std::ostream_iterator<int>(std::cout, " "));
selection_sort(v.begin(), v.end());
std::cout << "\n : ";
copy(v.begin(), v.end(), std::ostream_iterator<int>(std::cout, " "));
std::cout << '\n';
}
:
: -7 6 2 4 -1 6 -9 -1 2 -5 10 -9 -5 -3 -5 -3 6 6 1 8
: -9 -9 -7 -5 -5 -5 -3 -3 -1 -1 1 2 2 4 6 6 6 6 8 10
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