Question 1

What are the key differences between AVL trees and Red-Black trees?

Accepted Answer

AVL trees are more strictly balanced than Red-Black trees, which can lead to faster lookups but slower insertions and deletions. Red-Black trees are less balanced but offer faster insertion and deletion operations, making them a better choice for write-heavy applications.

Question 2

How do you perform a rotation in an AVL tree?

Accepted Answer

A rotation in an AVL tree is a local transformation of a subtree that restores the balance factor of a node. There are four types of rotations: left rotation, right rotation, left-right rotation, and right-left rotation. The type of rotation depends on the position of the newly inserted node relative to its parent and grandparent.

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