stl max函數(shù)

C ++ STL std :: max_element()函數(shù) (C++ STL std::max_element() function)

max_element() function is a library function of algorithm header, it is used to find the largest element from the range, it accepts a container range [start, end] and returns an iterator pointing to the element with the largest value in the given range.

max_element()函數(shù)是算法標頭的庫函數(shù)，用于查找范圍中的最大元素，它接受容器范圍[start，end]，并返回一個迭代器，該迭代器指向給定范圍中具有最大值的元素。

Additionally, it can accept a function as the third argument that will perform a conditional check on all elements.

此外，它可以接受函數(shù)作為第三個參數(shù)，它將對所有元素執(zhí)行條件檢查。

Note: To use max_element() function – include <algorithm> header or you can simple use <bits/stdc++.h> header file.

注意：要使用max_element()函數(shù) –包括<algorithm>頭文件，或者您可以簡單地使用<bits / stdc ++。h>頭文件。

Syntax of std::max_element() function

std :: max_element()函數(shù)的語法

std::max_element(iterator start, iterator end, [compare comp]);

Parameter(s):

參數(shù)：

• iterator start, iterator end – these are the iterator positions pointing to the ranges in the container.

  迭代器開始，迭代器結(jié)束 –這些是指向容器中范圍的迭代器位置。

• [compare comp] – it's an optional parameter (a function) to be compared with elements in the given range.

  [compare comp] –它是一個可選參數(shù)(一個函數(shù))，可以與給定范圍內(nèi)的元素進行比較。

Return value: iterator – it returns an iterator pointing to the element with the largest value in the given range.

返回值： iterator –它返回一個迭代器，該迭代器指向給定范圍內(nèi)具有最大值的元素。

Example:

例：

Input:int arr[] = { 100, 200, -100, 300, 400 };//finding largest elementint result = *max_element(arr + 0, arr + 5);cout << result << endl;Output:400

C ++ STL程序演示了std :: max_element()函數(shù)的使用 (C++ STL program to demonstrate use of std::max_element() function)

In this program, we have an array and a vector and finding their largest elements.

在此程序中，我們有一個數(shù)組和一個向量，并找到它們的最大元素。

//C++ STL program to demonstrate use of //std::max_element() function #include <iostream> #include <algorithm> #include <vector> using namespace std;int main() {//an arrayint arr[] = { 100, 200, -100, 300, 400 };//a vectorvector<int> v1{ 10, 20, 30, 40, 50 };//finding largest element from the arrayint result = *max_element(arr + 0, arr + 5);cout << "largest element of the array: " << result << endl;//finding largest element from the vectorresult = *max_element(v1.begin(), v1.end());cout << "largest element of the vector: " << result << endl;return 0; }

Output

輸出量

largest element of the array: 400 largest element of the vector: 50

Reference: C++ std::max_element()

參考： C ++ std :: max_element()

翻譯自: https://www.includehelp.com/stl/std-max_element-function-with-example.aspx

stl max函數(shù)

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