How do I sort a vector in C++?

How do I sort a vector in C++?

You can sort a vector in C++ using the std::sort function from the <algorithm> header. Would you like an example?

Yes, please provide an example.

Here's a simple example:

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

int main() {
    std::vector<int> vec = {5, 2, 9, 1, 5, 6};
    std::sort(vec.begin(), vec.end());
    for (int num : vec) {
        std::cout << num << " ";
    }
    return 0;
}

This will sort the vector in ascending order.

What if I want to sort it in descending order?

You can use a custom comparator with std::sort. Here's how:

std::sort(vec.begin(), vec.end(), std::greater<int>());

This will sort the vector in descending order.