min_element和max_element用法

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C++ STL 求向量中的最大值和最小值max_element min_element

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#include<iostream>
#include<algorithm>
using namespace std;
int main()
{
	int n[]={1,4,22,3,8,5};
	int len=sizeof(n)/sizeof(int);
	cout<<*max_element(n,n+len)<<endl;
	cout<<*min_element(n,n+len)<<endl;
	return 0;

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// min_element/max_element example
#include <iostream>     // std::cout
#include <algorithm>    // std::min_element, std::max_element

bool myfn(int i, int j) { return i<j; }

struct myclass {
  bool operator() (int i,int j) { return i<j; }
} myobj;

int main () {
  int myints[] = {3,7,2,5,6,4,9};

  // using default comparison:
  std::cout << "The smallest element is " << *std::min_element(myints,myints+7) << '\n';
  std::cout << "The largest element is "  << *std::max_element(myints,myints+7) << '\n';

  // using function myfn as comp:
  std::cout << "The smallest element is " << *std::min_element(myints,myints+7,myfn) << '\n';
  std::cout << "The largest element is "  << *std::max_element(myints,myints+7,myfn) << '\n';

  // using object myobj as comp:
  std::cout << "The smallest element is " << *std::min_element(myints,myints+7,myobj) << '\n';
  std::cout << "The largest element is "  << *std::max_element(myints,myints+7,myobj) << '\n';

  return 0;
}

参考链接

https://blog.csdn.net/A_Eagle/article/details/7373165