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

C++ offers a powerful standard library that includes various container types, one of which is the `std::list`. The `std::list` is a doubly linked list that allows for efficient insertion and deletion of elements at any position, making it an ideal choice for scenarios where these operations need to be performed frequently.

Efficient Insertion and Erasure with std::list

Inserting and erasing elements in a `std::list` is efficient because the operations do not require shifting elements, as is the case with vector or array types. Here’s an example showcasing how to perform these operations:


        #include <iostream>
        #include <list>

        int main() {
            std::list<int> myList;

            // Inserting elements
            myList.push_back(10); // Insert 10 at the end
            myList.push_front(20); // Insert 20 at the beginning
            auto it = myList.begin();
            std::advance(it, 1); // Move iterator to the second position
            myList.insert(it, 30); // Insert 30 at the second position

            std::cout << "List after insertion: ";
            for (const auto& elem : myList) {
                std::cout << elem << " ";
            }
            std::cout << std::endl;

            // Erasing elements
            myList.erase(it); // Erase the element at the second position

            std::cout << "List after erasure: ";
            for (const auto& elem : myList) {
                std::cout << elem << " ";
            }
            std::cout << std::endl;

            return 0;
        }

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

Efficient Insertion and Erasure with std::list

Popular Topics

Recent Languages

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

Efficient Insertion and Erasure with std::list

Related Questions

Popular Topics

Recent Languages