In AVL Tree Balancing is done if the Balance Factor of a node is
Question
In AVL Tree Balancing is done if the Balance Factor of a node is
Solution
In an AVL Tree, balancing is done if the balance factor of a node is either less than -1 or greater than 1. The balance factor of a node in an AVL tree is the height of the left subtree minus the height of the right subtree. If this balance factor is not in the range of -1 to 1, then the tree is unbalanced and needs to be balanced again. This is done through rotations. There are four types of rotations: left-left, right-right, left-right, and right-left. The type of rotation depends on whether the unbalanced node is left-heavy or right-heavy and whether the unbalanced node's child is left-heavy or right-heavy.
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