Which of the following operations is performed to maintain the balance of an AVL

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Question: Which of the following operations is performed to maintain the balance of an AVL tree?

Options:

Correct Answer: Rotation

Solution:

Rotations (single or double) are performed to maintain the balance of an AVL tree after insertions or deletions.

Which of the following operations is performed to maintain the balance of an AVL tree?

Which of the following operations is performed to maintain the balance of an AVL tree?

Step 1: Understand what an AVL tree is. It is a type of binary search tree that maintains balance to ensure efficient operations.
Step 2: Know that balance in an AVL tree is determined by the heights of the left and right subtrees. The difference in height should not be more than 1.
Step 3: When you insert or delete a node, the balance of the tree may be disrupted.
Step 4: To fix the balance, you perform rotations. There are two types of rotations: single rotations and double rotations.
Step 5: A single rotation is used when the tree is unbalanced in one direction (left or right).
Step 6: A double rotation is used when the tree is unbalanced in the opposite direction (left-right or right-left).
Step 7: After performing the necessary rotation(s), the AVL tree will be balanced again.

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