How can I use C++ standard algorithms effectively?

What are some common C++ standard algorithms I should know?

Some common C++ standard algorithms include sort, find, accumulate, and transform. They are part of the <algorithm> header.

Can you give me an example of how to use the sort algorithm?

Sure! You can use std::sort like this:

#include <algorithm>
#include <vector>

std::vector<int> vec = {5, 2, 9, 1, 5, 6};
std::sort(vec.begin(), vec.end());

This will sort the vector in ascending order.

What if I want to sort in descending order?

You can use a custom comparator with std::sort:

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

This will sort the vector in descending order.

Are there any performance considerations I should keep in mind?

Yes, the performance of standard algorithms can vary based on the data structure and the algorithm's complexity. Always consider the time complexity and choose the right algorithm for your needs.