The rotations performed by the rebalance_left member function of the AVL_Tree class will reduce the overall height of a tree by __________.
A) -1
B) 0
C) 1
D) 2

Question

Quizplus · Accepted Answer

The rebalance_left function in an AVL tree is designed to maintain the balance of the tree after an insertion or deletion that might have caused a left-heavy imbalance. The function performs rotations (single or double) to ensure the tree remains balanced. The effect of these rotations is to reduce the height of the subtree by 1, ensuring the balance factor of every node is within the allowed range (-1, 0, 1) and thus maintaining the overall AVL tree properties.

The Rotations Performed by the Rebalance_left Member Function of the AVL_Tree