In a min heap, the node with the smallest value sits on top. In a max heap, the node with the largest value sits on top. A binary tree consists of a hierarchy of nodes where each parent node always has two child nodes. What is a Heap?Ī heap implements a binary tree structure. In Python, a common way to implement a priority queue is the heapq module. To implement a priority queue you need a concrete data structure such as a binary heap. But they do not define an implementation. Abstract data structures define the expected behavior such as that items should be ordered by priority.
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