How do you use PriorityQueue with a simple code example?

A PriorityQueue in Java is a special type of queue where each element is associated with a priority. The elements with higher priority are served before those with lower priority. Here’s a simple example demonstrating the use of a PriorityQueue.


import java.util.PriorityQueue;

public class PriorityQueueExample {
    public static void main(String[] args) {
        // Create a priority queue
        PriorityQueue pq = new PriorityQueue<>();

        // Add elements to the priority queue
        pq.add(10);
        pq.add(20);
        pq.add(15);

        // Print the head of the queue (the smallest element)
        System.out.println("Head of the queue: " + pq.peek());

        // Remove and print elements from the priority queue
        while (!pq.isEmpty()) {
            System.out.println("Removed: " + pq.poll());
        }
    }
}

How do you use PriorityQueue with a simple code example?

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How do you use PriorityQueue with a simple code example?

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