Mar 25, 2009 · How do I get a PriorityQueue to sort on what I want it to sort on? Also, is there a difference between the offer and add methods?

Jan 31, 2018 · In Priority Queue you will essentially put user define objects, so to do it priority queue asks you how to order these objects (because priority queues are like heap data structures -- a …

Jul 7, 2020 · Priority Queue of an array of integers in java Asked 5 years, 5 months ago Modified 1 year, 10 months ago Viewed 26k times

A heap based priority queue only guarantees that the first element is the highest/lowest. There is no cheap (i.e. O (n)) way to get the elements in sorted form. If you need to do this often, consider using …

May 26, 2016 · I was learning Java and trying to learn priority queue in collections. I tried with below example from one website: import java.util.*; class S { public static void main (String args []) ...

Oct 25, 2010 · PriorityQueue<Data> queue = new PriorityQueue<Data>(); the queue will order items by the order defined by the compareTo method. The problem with this solution is that if you want the …

How do I make the print_queue work properly in Java? This is my own implementation of a queue. Using Iterator() works fine, except it prints numbers in random order. package data_structures_java ; ...

Oct 9, 2020 · That is your comparator, to wit, a lambda expression which implements a Comparator<T>, and which you pass as an argument into your priority queue constructor. PriorityQueue<T> then …

May 19, 2011 · min-heap and max-heap are both priority queue, it depends on how you define the order of priority. That is to say, a priority queue can be a min-heap or a max-heap in your algorithm.

I have priority queue in Java of Integers: PriorityQueue<Integer> pq= new PriorityQueue<Integer> (); When I call pq.poll () I get the minimum element. Question: how to change the code ...