Feb 2, 2015 · 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: …

Oct 23, 2013 · A priority queue is an abstract data type that captures the idea of a container whose elements have "priorities" attached to them. An element of highest priority always …

Mar 25, 2009 · When using a capacity-restricted queue, offer () is generally preferable to add (), which can fail to insert an element only by throwing an exception. And PriorityQueue is an …

Jul 18, 2021 · There are different of to initialize a priority queue from another container, such as . You can also choose whether you want a max heap (default, or by using ) or a min heap (). …

Mar 13, 2010 · The default stl priority queue is a Max one (Top function returns the largest element). Say, for simplicity, that it is a priority queue of int values.

Oct 2, 2019 · Nothing in the specification of priority_queue tells how elements with the same priority are sorted. You have to add information on your data and define a new ordering to take …

A priority queue only gives you access to one element in sorted order -- i.e., you can get the highest priority item, and when you remove that, you can get the next highest priority, and so …

Oct 19, 2013 · 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.

Dec 29, 2013 · If your comparison function can't be expressed using standard library functors (in case you use custom classes in the priority queue), I recommend writing a custom functor …

Feb 18, 2010 · I need to implement a priority queue where the priority of an item in the queue can change and the queue adjusts itself so that items are always removed in the correct order. I …