Data Structure


Q41.

Let T be a binary search tree with 15 nodes. The minimum and maximum possible heights of T are : Note: The height of a tree with a single node is 0.
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Q42.

Consider the following binary search tree T given below: Which node contains the fourth smallest element in T?
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Q43.

We are given a set of n distinct elements and an unlabeled binary tree with n nodes. In how many ways can we populate the tree with the given set so that it becomes a binary search tree?
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Q44.

Which one of the following is the tightest upper bound that represents the time complexity of inserting an object into a binary search tree of n nodes?
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Q45.

How many distinct binary search trees can be created out of 4 distinct keys?
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Q46.

Suppose the numbers 7,5,1,8,3,6,0,9,4,2 are inserted in that order into an initially empty binary search tree. The binary search tree uses the usual ordering on natural numbers. What is the in-order traversal sequence of the resultant tree?
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Q47.

While inserting the elements 71, 65, 84, 69, 67, 83 in an empty binary search tree (BST) in the sequence shown, the element in the lowest level is
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Q48.

The preorder traversal sequence of a binary search tree is 30, 20, 10, 15, 25, 23, 39, 35, 42. Which one of the following is the postorder traversal sequence of the same tree?
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Q49.

Which of the following is/are correct inorder traversal sequence(s) of binary search tree(s)? I. 3, 5, 7, 8, 15, 19, 25 II. 5, 8, 9, 12, 10, 15, 25 III. 2, 7, 10, 8, 14, 16, 20 IV. 4, 6, 7, 9 18, 20, 25
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Q50.

The number of ways in which the numbers 1,2,3,4,5,6,7 can be inserted in an empty binary search tree, such that the resulting tree has height 6, is _____. Note: The height of a tree with a single node is 0.
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