名前空間
変種
操作

std::is_heap

提供: cppreference.com
< cpp‎ | algorithm

 
 
アルゴリズムライブラリ
機能します
Original:
Functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
シーケンス動作を非改変
Original:
Non-modifying sequence operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
シーケンス動作を変更する
Original:
Modifying sequence operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
操作を仕切る
Original:
Partitioning operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
(ソートされた範囲で)ソート操作
Original:
Sorting operations (on sorted ranges)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
バイナリ検索操作(ソート範囲で)
Original:
Binary search operations (on sorted ranges)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
(ソートされた範囲で)操作を設定します
Original:
Set operations (on sorted ranges)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
ヒープ操作
Original:
Heap operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
is_heap
is_heap_until(C++11)
make_heap
最小値/最大値操作
Original:
Minimum/maximum operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
数値演算
Original:
Numeric operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Cライブラリ
Original:
C library
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
 
Defined in header <algorithm>
template< class RandomIt >
bool is_heap( RandomIt first, RandomIt last );
(1)
template< class RandomIt, class Compare >
bool is_heap( RandomIt first, RandomIt last, Compare comp );
(2)
範囲内の要素かどうかをチェックし[first, last)ヒープアール.
Original:
Checks if the elements in range [first, last) are a heap.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
第二はis_heap与えられた比較関数を使用するのに対しoperator<の最初のバージョンでは、要素を比較するためにcompを使用しています.
Original:
The first version of is_heap uses operator< to compare elements, whereas the second uses the given comparison function comp.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

目次

[編集] パラメータ

first, last -
検討する要素の範囲
Original:
the range of elements to examine
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
comp - 比較関数. 最初の値が二つ目の値より小さい 場合、 ​trueを返します.

比較関数のシグネチャは以下と同等でなければなりません.

 bool cmp(const Type1 &a, const Type2 &b);

シグネチャはconstを含まなくても構いませんが, 比較関数は渡されたオブジェクトを変更してはなりません.
The types Type1 and Type2 must be such that an object of type RandomIt can be dereferenced and then implicitly converted to both of them. ​

型の要件
-
RandomItRandomAccessIterator

の要求を満足しなければなりません。

[編集] 値を返します

true範囲がヒープの場合falseその他のとき.
Original:
true if the range is heap, false otherwise.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[編集] 複雑

firstlastとの間の距離の線形
Original:
Linear in the distance between first and last
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[編集] ノート

'ヒープは、要素の範囲です[f,l)それは、次のプロパティがあります
Original:
A heap is a range of elements [f,l) that has the following properties:
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
  • *f範囲内の最大要素である
    Original:
    *f is the largest element in the range
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
  • 新しい要素がstd::push_heap()を使用して追加できます
    Original:
    a new element can be added using std::push_heap()
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
  • 最初の要素はstd::pop_heap()を用いて除去することができる
    Original:
    the first element can be removed using std::pop_heap()
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
要素の実際の配置は、実装定義です.
Original:
The actual arrangement of the elements is implementation defined.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[編集]

#include <iostream>
#include <algorithm>
 
int main()
{
    std::vector<int> v { 3, 1, 4, 1, 5, 9 };
 
    std::cout << "initially, v: ";
    for (auto i : v) std::cout << i << ' ';
    std::cout << '\n';
 
    if (!std::is_heap(v.begin(), v.end())) {
        std::cout << "making heap...\n";
        std::make_heap(v.begin(), v.end());
    }
 
    std::cout << "after make_heap, v: ";
    for (auto i : v) std::cout << i << ' ';
    std::cout << '\n';
}

出力:

initially, v: 3 1 4 1 5 9 
making heap...
after make_heap, v: 9 5 4 1 1 3

[編集] も参照してください

ヒープで最大の部分範囲を見つけることができます
Original:
finds the largest subrange that is heap
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(関数テンプレート) [edit]