Extract-Max/Min from the Priority QueueĮxtract-Max returns the node with maximum value after removing it from a Max Heap whereas Extract-Min returns the node with minimum value after removing it from Min Heap. Peek operation returns the maximum element from Max Heap or minimum element from Min Heap without deleting the node.Ĥ. Peeking from the Priority Queue (Find max/min) Deleting an Element from the Priority Queueĭeleting an element from a priority queue (max-heap) is done as follows:Īlgorithm for deletion of an element in the priority queue (max-heap)Įlse swap nodeToBeDeleted with the lastLeafNodeįor Min Heap, the above algorithm is modified so that the both childNodes are smaller than currentNode.ģ. Insert the newNode at the end (last node from left to right.)įor Min Heap, the above algorithm is modified so that parentNode is always smaller than newNode.Ģ. Insert an element at the end of the queueĪlgorithm for insertion of an element into priority queue (max-heap)
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