Cpp

C++中的max_element与min_element

scorlw 发布于

C++中的max_element()与min_element()

c++

max_element()与min_element()都定义于头文件 ，分别实现了返回区间 [first,last)中第一个最大值和第一个最小值对应的迭代器。

实例

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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;
}

IO:

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输出：
The smallest element is 2
The largest element is 9
The smallest element is 2
The largest element is 9
The smallest element is 2
The largest element is 9

原文地址：https://blog.csdn.net/u010510020/article/details/73351262