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