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MCQ

Consider a weight balanced tree such that, the number of nodes in the left sub tree is at least half and at most twice the number of nodes in the right sub tree. The maximum possible height (number of nodes on the path from the root to the farthest leaf) of such a tree on k nodes can be described as

log2 n

log4/3 n

log3 n

log3/2 n

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What is the below pseudo code trying to do, where pt is a node pointer and root pointer.

redblack(Node root, Node pt) :
    if (root == NULL)
       return pt
 
    if (pt.data < root.data)
    {
        root.left  =   redblack(root.left, pt);
        root.left.parent = root
    }
    else if (pt.data > root.data)
    {
        root.right = redblackt(root.right, pt)
        root.right.parent = root
    }
   return root

insert a new node

delete a node

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count the number of nodes

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In the

Depth First

Breadth First

Width First

Depth Limited

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In which tree, the right NULL pointer of each node (not having a right child node) points to its in-order successor?

Right-threaded binary tree

Left-threaded binary tree

Full-threaded binary tree

All of the above

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Why to prefer red-black trees over AVL trees?

Because red-black is more rigidly balanced

AVL tree store balance factor in every node which costs space

AVL tree fails at scale

Red black is more efficient

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Abstract data types

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Hash based structures

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Mixed

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