How do I insert and erase elements efficiently with std::set?

In C++, the `std::set` container provides an efficient way to store unique elements in a sorted order. To insert elements into a `std::set`, the `insert` method can be utilized, which will ensure that no duplicates are added.

Erasing elements is equally straightforward with the `erase` method. Both operations are implemented to provide logarithmic complexity, ensuring efficiency even with larger datasets.

Below is an example demonstrating how to insert and erase elements in a `std::set`:

#include <iostream> #include <set> int main() { std::set mySet; // Inserting elements mySet.insert(5); mySet.insert(10); mySet.insert(3); std::cout << "Set elements after insertion: "; for (const int& element : mySet) { std::cout << element << " "; } std::cout << std::endl; // Erasing an element mySet.erase(10); std::cout << "Set elements after erasing 10: "; for (const int& element : mySet) { std::cout << element << " "; } std::cout << std::endl; return 0; }

std::set C++ insert erase elements efficiency

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