Does java have an indexed minimum priority queue?

我需要它来实现Dijkstra算法，并且我有我自己的实现，但是使用java自己的类来记录我的代码会更容易。

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

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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.

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