
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Transcribed Image Text:Suppose that we have some binary heaps that are represented using linked binary tree structures.
Consider the problem of merging heap Hi with heap H, to produce a new heap containing all of their
elements.
Assume both heaps are perfect binary trees, containing 2! – 1 and 2" – 1 nodes, respectively.
a) Give an O(log n) algorithm to merge the two heaps if l = r.
b) Give an O(log n) algorithm to merge the two heaps if |l – r| = 1.
c) (Bonus) Give an O(log n) algorithm to merge the two heaps regardless of l and r.
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- Please help me write a pyhon code for this problemarrow_forwardSuppose we have p max heaps, with q elements in each. We wish to combine these into a single heap. Each of the following sub-parts describes one approach merging the heaps, and you are asked to derive the big O running time. MUST show derivation We create a new, empty heap H. From each of the input heaps, P, until P is empty we repeatedly remove the highest priority element using the heap delete method, and insert it into H using the heap insert method. What is the worst-case big O running time? Show derivation. We create a new, empty linked list L. For each of the input heaps, P, we iterate over its internal array and insert each element at the front of L. We then transfer the elements of L into an array, and heapify the array using repeated sift downs. What is the worst-case running time? Show derivation. We divide the p input heaps into p/2 pairs, and apply the algorithm from part (b) on each pair, resulting in p/2 heaps. We then repeat this process until we are left with a…arrow_forwardCircle the following statement that is false regarding binary heaps.a. Binary heaps are not always complete binary trees.b. Binary heaps can be used for sorting in O(n log n) time.c. Binary heaps can be reheapified after a pop in worst case O(log n) time.arrow_forward
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- For a given heap below: M (K A F H. The array representation of the heap is givep below. 1 2 3 4 Y W M 15 K 11 H. 6. 10 12 F a) Delete the root node, give the resulting heap. 3 1 2 4 6 10 11 12 b) Insert Q into the original heap, give the resulting heap. 3 12 4 16 10 11 12 TTTT Paragraph E- E T Arial 3 (12pt) T T. OS. Mashups HTML CSS O Type here to searcharrow_forwardSuppose that binary heaps are represented using explicit links. Give a simple algorithm to find the tree node that is at implicit position i. instructions: provide Java-like pseudocode. The implicit position of a node refers to the index it would have if the heap was stored in the array format reviewed in class (first element at index 1).arrow_forward
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