Search Tree Rotation: Difference between revisions
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* [[Binary_Search_Trees#Rotation|Binary Search Trees]] | * [[Binary_Search_Trees#Rotation|Binary Search Trees]] | ||
=Overview= | =Overview= | ||
Rotations are a set of primitives common to all binary search tree implementations, which preserve the [[Binary_Search_Trees#Binary_Search_Tree_Property|Binary Search Tree Property]]. | Rotations are a set of primitives common to all binary search tree implementations, which preserve the [[Binary_Search_Trees#Binary_Search_Tree_Property|Binary Search Tree Property]] while locally rebalancing subtrees at a node in O(1) time. There are left rotations and right rotations. When invoking a rotation, is on a parent-child pair of a search tree. If it is the right child of the parent, use a left rotation. If it is the left child, use a right rotation. | ||
Revision as of 18:41, 13 October 2021
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Overview
Rotations are a set of primitives common to all binary search tree implementations, which preserve the Binary Search Tree Property while locally rebalancing subtrees at a node in O(1) time. There are left rotations and right rotations. When invoking a rotation, is on a parent-child pair of a search tree. If it is the right child of the parent, use a left rotation. If it is the left child, use a right rotation.