Does java have an indexed minimum priority queue?

Question

I need it for an implementation of Dijkstra\'s algorithm, and I do have my own implementation but documenting my code would be easier with java\'s own classes.

Answer 1

What do you mean 'indexed'? Priority queue doesn't support indexing, unless it won't be queue any more.

Java supports standard Priority Queue like C++ STL. It can be found in java.util namespace as PriorityQueue.

Answer 2

No, Java standard library has no such data structure. I think most people use this: http://algs4.cs.princeton.edu/24pq/IndexMinPQ.java.html