Explain the concept of Tree Rotation.

Difficulty: 5/10

AVL trees, Red-Black trees, Self-balancing BST

Tree Rotation

A tree rotation is a local restructuring operation that changes parent-child relationships while preserving the inorder ordering of a BST. Rotations are fundamental to self-balancing trees such as AVL and Red-Black Trees. The purpose is to reduce or redistribute tree height without changing the sorted sequence of keys.

javascript

1
Left and right rotations are the basic operations.
2
Rotations take O(1) time.
3
They preserve BST inorder ordering.
4
AVL Trees use rotations to restore balance.
5
Red-Black Trees use rotations together with recoloring.

Scenario Questions

0-2 years experience

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