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      std::iter_swap

      提供: cppreference.com
      < cpp‎ | algorithm

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      C++
       
      アルゴリズムライブラリ
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      Functions
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      Non-modifying sequence operations
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      Modifying sequence operations
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      Partitioning operations
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      （ソートされた範囲で）ソート操作
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      Sorting operations (on sorted ranges)
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      Binary search operations (on sorted ranges)
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      （ソートされた範囲で）操作を設定します
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      Set operations (on sorted ranges)
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      Heap operations
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      Minimum/maximum operations
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      Numeric operations
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      C library
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      Defined in header <algorithm>
      template<class ForwardIt1, class ForwardIt2 >
      void iter_swap( ForwardIt1 a, ForwardIt2 b );
      スワップ指定した反復子が指している要素の値.
      Original:
      Swaps the values of the elements the given iterators are pointing to.
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      目次

      [編集]パラメータ

      a, b -
      スワップする要素へのイテレータ
      Original:
      iterators to the elements to swap
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      型の要件
      -
      ForwardIt1, ForwardIt2 は ForwardIterator

      の要求を満足しなければなりません。

      -
      *a, *b は Swappable

      の要求を満足しなければなりません。

      [編集]値を返します

      (なし)

      [編集]複雑性

      定数
      Original:
      constant
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      [編集]可能な実装

      template<class ForwardIt1, class ForwardIt2>void iter_swap(ForwardIt1 a, ForwardIt2 b){usingstd::swap; swap(*a, *b);}

      [編集]例

      以下はで選択ソートの実装はC + +です
      Original:
      The following is an implementation of selection sort in C++
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      このコードを実行します
      #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; generate_n(back_inserter(v), 20, bind(dist, gen));   std::cout<<"Before sort: "; copy(v.begin(), v.end(), std::ostream_iterator<int>(std::cout, " "));   selection_sort(v.begin(), v.end());   std::cout<<"\nAfter sort: "; copy(v.begin(), v.end(), std::ostream_iterator<int>(std::cout, " "));std::cout<<'\n';}

      出力: 

      Before sort: -7 6 2 4 -1 6 -9 -1 2 -5 10 -9 -5 -3 -5 -3 6 6 1 8 After sort: -9 -9 -7 -5 -5 -5 -3 -3 -1 -1 1 2 2 4 6 6 6 6 8 10

      [編集]参照

      		 2つのオブジェクトの値を交換します
      (関数テンプレート)[edit]
      スワップの要素の2つの範囲を
      Original:
      swaps two ranges of elements
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      (関数テンプレート)[edit]
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