Question Discussion & Solution

MCQ

Worst case time complexity of binary search is ______________

O(n)

O(logn)

?(nlogn)

?(logn)

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A binary tree is said to be a complete binary tree if all the leaf nodes of the tree are at ________.

Same level

Opposite level

Different level

Adjacent level

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What is the time complexity for finding the height of the binary tree?

h = O(loglogn)

h = O(nlogn)

h = O(n)

h = O(log n)

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What are the conditions for an optimal binary search tree and what is its advantage?

The tree should not be modified and you should know how often the keys are accessed, it improves the lookup cost

You should know the frequency of access of the keys, improves the lookup time

The tree can be modified and you should know the number of elements in the tree before hand, it improves the deletion time

None of the mentioned

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What may be the content of a node in threaded binary tree?

leftchild_pointer, left_tag, data, right_tag, rightchild_pointer

leftchild_pointer, left_tag

leftchild_pointer, left_tag, right_tag, rightchild_pointer

leftchild_pointer, left_tag, data

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One can make an exact replica of a Binary Search Tree by traversing it in ...............

In-order

Pre-order

Post-order

Any order

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Abstract data types

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Queues

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Heaps

Hash based structures

Graphs

Mixed

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