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GATE | GATE-CS-2009 | Question 37

  • Difficulty Level : Easy
  • Last Updated : 28 Jun, 2021

What is the maximum height of any AVL-tree with 7 nodes? Assume that the height of a tree with a single node is 0.
(A) 2
(B) 3
(C) 4
(D) 5

Answer: (B)

Explanation: AVL trees are binary trees with the following restrictions.
1) the height difference of the children is at most 1.
2) both children are AVL trees

               /   \
             /      \
            b        c
          /  \      /
         /    \    /
        d     e   g


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