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      std::reverse

      提供: cppreference.com
      < cpp‎ | algorithm

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      C++
       
      アルゴリズムライブラリ
      機能します
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      Functions
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      シーケンス動作を非改変
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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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      バイナリ検索操作（ソート範囲で）
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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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      ヒープ操作
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      Heap operations
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      最小値/最大値操作
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      Minimum/maximum operations
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      数値演算
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      Numeric operations
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      C library
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      Defined in header <algorithm>
      template<class BidirIt >
      void reverse( BidirIt first, BidirIt last );
      レンジ[first, last)の要素の順序を反転.
      Original:
      Reverses the order of the elements in the range [first, last).
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      目次

      [編集]パラメータ

      first, last -
      逆転する要素の範囲
      Original:
      the range of elements to reverse
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      型の要件
      -
      BidirIt は BidirectionalIterator

      の要求を満足しなければなりません。

      -
      The type of dereferenced BidirIt must meet the requirements of Swappable.

      [編集]値を返します

      (なし)

      [編集]可能な実装

      template<class BidirIt>void reverse(BidirIt first, BidirIt last){while((first != last)&&(first !=--last)){std::swap(*first++, *last);}}

      [編集]例

      このコードを実行します
      #include <vector>#include <iostream>#include <algorithm>   int main(int argc, char** argv){std::vector<int> v({1,2,3}); std::reverse(std::begin(v), std::end(v));std::cout<< v[0]<< v[1]<< v[2]<<'\n';   int a[]={4, 5, 6, 7}; std::reverse(&a[0], &a[4]);std::cout<< a[0]<< a[1]<< a[2]<< a[3]<<'\n';}

      出力: 

      321 7654

      [編集]複雑性

      firstlastとの間の距離の線形
      Original:
      linear in the distance between first and last
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      [編集]参照

      逆転された範囲のコピーを作成します
      Original:
      creates a copy of a range that is reversed
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