vector数组最大、小值及所在坐标

在普通数组中

例 a[]={1,2,3,4,5,6};

int maxValue = *max_element(a,a+6);//最大值
int minValue = *min_element(a,a+6);//最小值

int maxPosition = max_element(a,a+6) - a;//最大值下标
int minPosition = min_element(a,a+6) - a;//最小值下标

在vector数组中

vector<int> v{1,2,3};
int maxPosition = max_element(v.begin(),v.end()) - v.begin();//最大值下标
int minPosition = min_element(v.begin(),v.end()) - v.begin();//最小值下标
int maxValue = *max_element(v.begin(),v.end());//最大值
int minValue = *min_element(v.begin(),v.end());//最小值

或者

vector<double>  vec{1.0, 2.0, 3.0, 4.0, 5.0, 1.0, 2.0, 3.0, 4.0, 5.0};
 
    
    auto biggest = max_element(begin(vec), end(vec));
//或者vector<double>::iterator biggest = max_element(begin(vec), end(vec));
    cout << "Max element is " << *biggest<< " at position " << distance(begin(vec), biggest) << endl;
 
    auto smallest = min_element(std::begin(vec), end(vec));
    cout << "min element is " << *smallest<< " at position " << distance(begin(vec), smallest) << endl;