Sorting out vector elements

Is there any function that selects directly the smallest and the greatest number in a vector or do I have to write an algorithm for that?

Use the min_element and max_element functions.

Code:

#include <vector>
#include <iostream>
#include <algorithm>

int main()
{
    std::vector<int> intVect;

    intVect.push_back(18);
    intVect.push_back(21);
    intVect.push_back(36);
    intVect.push_back(14);
    intVect.push_back(9);

    std::cout << "Min value is: " << *std::min_element(intVect.begin(),intVect.end()) << std::endl;
    std::cout << "Max value is: " << *std::max_element(intVect.begin(),intVect.end()) << std::endl;

}

Output:

Code:

Min value is: 9
Max value is: 36

Or sort the vector and just walk through - better approach if you need the second-smallest etc.

std::sort