What are the complexities of STL algorithms in C++?

What are the complexities of STL algorithms in C++?

The complexities of STL algorithms vary. For example, sorting algorithms like std::sort have an average complexity of O(n log n).

Can you explain the complexity of std::find?

Certainly! The complexity of std::find is O(n) because it may need to check each element in the range until it finds the target.

What about std::sort? Is it always O(n log n)?

std::sort is typically O(n log n) on average, but in the worst case, it can be O(n^2) if a poor pivot is chosen in certain implementations.

Are there any algorithms with constant time complexity?

Yes, algorithms like std::find_if can have constant time complexity O(1) if the element is found at the beginning of the range.