Consider the following scenario:In a weight-balanced tree, a new node with a large weight is inserted as the right child of a node with a small weight.How might the tree adapt to maintain balance, and what rotation operation is likely to be involved?a)The left subtree's weight increases; left rotation is performed.b)No action is needed.c)The left subtree's weight decreases; double rotation is performed.d)The right subtree's weight increases; right rotation is performed.
Question
Consider the following scenario:In a weight-balanced tree, a new node with a large weight is inserted as the right child of a node with a small weight.How might the tree adapt to maintain balance, and what rotation operation is likely to be involved?a)The left subtree's weight increases; left rotation is performed.b)No action is needed.c)The left subtree's weight decreases; double rotation is performed.d)The right subtree's weight increases; right rotation is performed.
Solution
In a weight-balanced tree, when a new node with a large weight is inserted as the right child of a node with a small weight, the tree will need to adapt to maintain balance. This is because the weight of the right subtree has increased, making the tree unbalanced.
The tree can adapt by performing a rotation operation. The likely rotation operation to be involved in this case is a left rotation. This is because a left rotation will move the newly inserted node (which has a large weight) up the tree and the node with the small weight down the tree, helping to balance the weights of the subtrees.
So, the correct answer is: a) The left subtree's weight increases; left rotation is performed.
Similar Questions
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If, during a deletion operation in a weight-balanced tree, the weight balance factor of a node violates the criterion, a _____ rotation might be performed to restore balance.a)singleb)quadruplec)doubled)triple
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