1)用operator<(C++20 前)std::less{}(C++20 起)比较元素。 3)用比较函数comp比较元素。 2,4)同(1,3),但按照policy执行。 这些重载只有在 std::is_execution_policy_v<std::decay_t<ExecutionPolicy>> (C++20 前) std::is_execution_policy_v<std::remove_cvref_t<ExecutionPolicy>> ...
三、手动实现 这两个函数手动实现就很简单了,直接遍历一遍找最值即可,这里贴一下cppreference上的源码实现: 1//版本一2template<classForwardIt>3ForwardItmax_element(ForwardItfirst,ForwardItlast)4{5if(first==last){6returnlast;7}8ForwardItlargest=first;9++first;10for(;first!=last;++first){11if(*l...
API Reference Document std::max_element C++ Algorithm library Defined in header <algorithm> (1) template< class ForwardIt > ForwardIt max_element( ForwardIt first, ForwardIt last ); (until C++17) template< class ForwardIt > constexpr ForwardIt max_element( ForwardIt first, Forward...
// alg_max_element.cpp // compile with: /EHsc #include <vector> #include <set> #include <algorithm> #include <iostream> #include <ostream> using namespace std; class CInt; ostream& operator<<( ostream& osIn, const CInt& rhs ); class CInt { public: CInt( int n = 0 ) : m_nVa...
// alg_max_element.cpp // compile with: /EHsc #include <vector> #include <set> #include <algorithm> #include <iostream> #include <ostream> using namespace std; class CInt; ostream& operator<<( ostream& osIn, const CInt& rhs ); class CInt { public: CInt( int n = 0 ) : m_nVa...
// max_element.cpp // compile with: /EHsc // Illustrates how to use the max_element function. // // Functions: // max_element : Return the maximum element within a range. // disable warning C4786: symbol greater than 255 character, // okay to ignore #pragma warning(disable: 4786)...
Edit & run on cpp.shThanks. Feb 20, 2011 at 1:56am Athar (4466) Well, how is the compiler supposed to know what makes an employee "greater" than another? See here: http://www.cplusplus.com/reference/algorithm/max_element/ You'll need to implement operator< for your class or pass...
http://www.cplusplus.com/reference/algorithm/min_element/?kw=min_element for the use of the third parameter. min_element/max_element expects a function[like] object that requires two parameters and a bool value as the return value. It is expected that the function object returns true when ...
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ForwardIt max_element(ForwardIt first, ForwardIt last ); (C++17 前) template< class ForwardIt >constexpr ForwardIt max_element(ForwardIt first, ForwardIt last ); (C++17 起) template< class ExecutionPolicy, class ForwardIt >ForwardIt max_element(ExecutionPolicy&& policy, ForwardIt first, ...