w3resource

Java: Compare two priority queues

Java Collection, PriorityQueue Exercises: Exercise-7 with Solution

Write a Java program to compare two priority queues.

Sample Solution:-

Java Code:

import java.util.PriorityQueue;
  public class Exercise7 {
  public static void main(String[] args) {
  // Create a empty Priority Queue
        PriorityQueue<String> pq1 = new PriorityQueue<String>();  
     // use add() method to add values in the Priority Queue
          pq1.add("Red");
          pq1.add("Green");
          pq1.add("Black");
          pq1.add("White");
          System.out.println("First Priority Queue: "+pq1);
          PriorityQueue<String> pq2 = new PriorityQueue<String>();  
          pq2.add("Red");
          pq2.add("Pink");
          pq2.add("Black");
          pq2.add("Orange");
          System.out.println("Second Priority Queue: "+pq2);
          //comparison output in Priority Queue
         for (String element : pq1){
             System.out.println(pq2.contains(element) ? "Yes" : "No");
          }      
     }
}

Sample Output:

First Priority Queue: [Black, Red, Green, White]                       
Second Priority Queue: [Black, Orange, Pink, Red]                      
Yes                                                                    
Yes                                                                    
No                                                                     
No

Java Code Editor:

Contribute your code and comments through Disqus.

Previous: Count the number of elements in a priority queue.
Next: Retrieve the first element of the priority queue.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Follow us on Facebook and Twitter for latest update.