In an AVL tree, the balance factor of a node is defined as the height difference between its _________ and _________ subtrees.
- Left
- Right
- Left and Right
- Child
The balance factor in an AVL (Adelson-Velsky and Landis) tree is calculated by subtracting the height of the right subtree from the height of the left subtree or vice versa, depending on the implementation. This difference determines whether the tree needs rebalancing to maintain its AVL properties. The other options do not accurately describe how the balance factor is calculated in an AVL tree.
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