Priority queue

A priority queue is a specialized type of collection where each item has a level of importance or priority. When new items are added, or when it's time to remove one, the system always processes the most urgent or highest-priority item first, regardless of the order it was added. Think of it like a conversation queue at a help desk: urgent issues are addressed before less critical ones, ensuring that the most important tasks are handled promptly. Priority queues are useful in scenarios like task scheduling, managing events, or handling emergency responses efficiently.