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Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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I really need help with this below, please.

I need to draw four AVL tree, balancing as I add items

Every time I need to rebalance the tree, I must label it to show
• which of the 4 cases it is (right/right, right/left, left/right, or left/left),
• which rotations (left or right) are performed.

If a single rebalancing operation requires two rotations, you may either show the end result after both
rotations, or show both rotations separately. Every time thr tree is rebalanced, you should draw the resulting tree in black, and draw the newly-addednodes (up to the next rebalancing) in a different color.

Exercise – random order
Add the numbers below to a balanced BST in the order given.

36 21 70 20 14 88 96 74
81 19 83 68 93 16 64 99

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