priority-queue Questions
3
I've been trying to use the Heap package in Go and I am not sure on how to initialize it.
package main
import "container/heap"
type PriorityMessage struct {
Priority int
Message string
}
func...
Koontz asked 27/11, 2019 at 21:51
5
Solved
I am wondering why for creating a min heap using the priority_queue, the std::greater should be used?
std::priority_queue<T, std::vector<T>, std::greater<T> > min_heap;
To me, ...
Durgy asked 23/9, 2015 at 19:36
4
Solved
So I want to use the smallest key as the priority and then return the VALUE of that corresponding key:
import javafx.util.Pair;
import java.util.PriorityQueue;
public class Test
{
public static ...
Cristalcristate asked 9/5, 2020 at 19:3
6
In my program I need to delete an element from a priority queue that is not at the top. Can that be done? If not, please suggest a way to do so except creating your own heap.
Hereunto asked 19/10, 2013 at 15:6
5
Solved
I have the following erroneous code which I am trying to compile in VC2010, but I'm getting the error C2974 this only occurs when I include the lambda expression, so I'm guessing it has something t...
Threedecker asked 27/4, 2011 at 16:57
11
Solved
I'm trying to declare a priority_queue of nodes, using bool Compare(Node a, Node b) as the comparator function (which is outside the node class).
What I currently have is:
priority_queue<Node,...
Partner asked 19/4, 2013 at 18:33
9
Solved
I need a data structure that always holds the n largest items inserted so far (in no particular order).
So, if n is 3, we could have the following session where I insert a few numbers and the con...
Nur asked 19/2, 2009 at 6:4
4
I'm trying to implement an algorithm to solve the skyline problem that involves removing specific elements from the middle of a max heap. The way I currently do it is maxheap.remove(index) but I ha...
Psychometry asked 31/10, 2017 at 17:26
5
Solved
I thought add() is supposed to ignore duplicates, but my output has duplicates. How do I not store duplicates?
I would also like to know how the priority queue checks if two elements are duplicate...
Feudatory asked 6/5, 2012 at 10:8
5
How to use queue.PriorityQueue as maxheap?
The default implementation of queue.PriorityQueue is minheap, in the documentation also there is no mention whether this can be used or not for maxheap.
Passmore asked 19/12, 2016 at 8:54
6
Solved
I want to compare the second element of the following array:
int[][] intervals = new int[][]{new int[]{0, 30},new int[]{5, 10},new int[]{15, 20}};
My priority queue with custom comparator:
Priorit...
Oriole asked 6/7, 2020 at 12:7
9
Solved
Does the F# library include a priority queue? Else can someone point to me an implementation of priority queue in F#?
Bandwidth asked 24/7, 2010 at 19:19
13
Solved
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?
Haase asked 25/3, 2009 at 19:18
5
Solved
I'm trying to use queue.PriorityQueue in Python 3(.6).
I would like to store objects with a given priority. But if two objects have the same priority, I don't mind PriorityQueue.get to return eith...
Weeds asked 3/1, 2019 at 18:28
3
Solved
.NET 6 now has PriorityQueue<TElement,TPriority> which is very useful. The document is not very clear yet (granted at the time of the question the documentation is still for RC1) if it is thr...
Goahead asked 16/11, 2021 at 9:55
2
Solved
Working with the PriorityQueue<TElement, TPriority> collection, frequently I have the need to preserve the insertion order of elements with the same priority (FIFO order), and AFAIK the only ...
Carousel asked 5/4, 2023 at 14:38
6
Solved
PriorityQueue implements Queue, but is PriorityQueue a FIFO data structure like Queue?
Mahalia asked 2/10, 2012 at 14:40
5
Solved
Priority Queues have a priority value and data, for every entry.
Thus, when adding a new element to the queue, it bubbles up to the surface if it has a higher priority value than elements already ...
Wiry asked 21/3, 2017 at 6:0
3
Solved
In python there's a built-in heapq algorithm that gives you push, pop, nlargest, nsmallest... etc that you can apply to lists. However, there's also the queue.PriorityQueue class that seems to supp...
Gamut asked 2/5, 2016 at 21:6
1
Solved
I have RabbitMQ setup with two queues called: low and high. I want my celery workers to consume from the high priority queue before consuming tasks for the low priority queue. I get this following ...
Wolffish asked 27/8, 2020 at 0:2
1
For my project I switched from GCC 5 to GCC 9 and found that the performance got worse. I did some investigations and came up with a simple source code which reproduces the behaviour.
I compile the...
Kosse asked 7/10, 2022 at 12:10
4
I'm using python's Queue.PriorityQueue, and ran into the following problem: when inserting several elements to the queue which have the same priority, I would expect the queue to serve them in the ...
Cretaceous asked 25/12, 2017 at 14:45
11
Solved
Seems they both let you retrieve the minimum, which is what I need for Prim's algorithm, and force me to remove and reinsert a key to update its value. Is there any advantage of using one over the ...
Tidy asked 19/8, 2010 at 18:12
3
Solved
Even though this question sounds as a duplicate, I searched a lot but couldn't find a proper solution.
I have following classes
public enum ChangeType
{
Add,
Modify,
Delete
}
public enum ...
Grof asked 18/1, 2013 at 10:14
1
Solved
I'm trying to use PriorityQueue in Unity with C#. The documentation says that it's supported in .NET 6 in namespace System.Collections.Generic.
I've tried:
using System.Collections;
using System.Co...
Institutional asked 3/1, 2022 at 15:44
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