C++ Vector 最大 最小值 索引 位置

C++ Vector 最大 最小值 索引 位置

使用STL的Vector时，利用函数 max_element，min_element，distance可以获取Vector中最大、最小值的值和位置索引：

#include <vector>  
#include <algorithm>  
#include <iostream>  
  
int main()  
{  
    std::vector<double> v {1.0, 2.0, 3.0, 4.0, 5.0, 1.0, 2.0, 3.0, 4.0, 5.0};  
  
    std::vector<double>::iterator biggest = std::max_element(std::begin(v), std::end(v));  
    std::cout << "Max element is " << *biggest<< " at position " << std::distance(std::begin(v), biggest) << std::endl;  
  
    auto smallest = std::min_element(std::begin(v), std::end(v));  
    std::cout << "min element is " << *smallest<< " at position " << std::distance(std::begin(v), smallest) << std::endl;  
}  
  
  
输出：  
  
Max element is 5 at position 4  
min element is 1 at position 0