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時，利用函數 max_element，min_element，distance可以獲取Vector中最大、最小值的值和位置索引：

參考：http://stackoverflow.com/questions/2953491/finding-the-position-of-the-max-element

代碼：

<span style="font-family:Comic Sans MS;font-size:12px;">#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;
}


輸出：

Max element is 5 at position 4
min element is 1 at position 0</span>