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Data Structures and Algorithms MCQs | Objective Questions Answers

(81) Which of the following sorting algorithms does not have a worst case running time of O(n2)?
[A] Insertion sort
[B] Quick sort
[C] Bubble sort
[D] Merge sort

Comment

Answer: Option [D]
(82) In a circular linked list
[A] there is no beginning and no end.
[B] components are arranged hierarchically.
[C] forward and backward traversal within the list is permitted.
[D] components are all linked together in some sequential manner.

Comment

Answer: Option [A]

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(83) The quick sort algorithm exploit _________ design technique
[A] Overflow
[B] Backtracking
[C] Dynamic programming
[D] Divide and Conquer

Comment

Answer: Option [D]
(84) The data structure required to check whether an expression contains balanced parenthesis is
[A] Stack
[B] Queue
[C] Tree
[D] Array

Comment

Answer: Option [A]
(85) What data structure would you mostly likely see in a nonrecursive implementation of a recursive algorithm?
[A] Trees
[B] Linked list
[C] Stack
[D] Queue

Comment

Answer: Option [C]
(86) The number of leaf nodes in a complete binary tree of depth d is
[A] 2d
[B] 2d–1+1
[C] 2d+1+1
[D] 2d+1

Comment

Answer: Option [A]
(87) The pre-order and post order traversal of a Binary Tree generates the same output. The tree can have maximum
[A] One node
[B] Two nodes
[C] Three nodes
[D] Any number of nodes

Comment

Answer: Option [A]
(88) A binary tree of depth “d” is an almost complete binary tree if
[A] Each leaf in the tree is either at level “d” or at level “d–1”
[B] For any node “n” in the tree with a right descendent at level “d” all the left descendents of “n” that are leaves, are also at level “d”
[C] Both (A) & (B)
[D] None of the above

Comment

Answer: Option [C]
(89) In a binary tree a sequence of consecutive edges is called ......
[A] Path
[B] Rotate
[C] Two-way
[D] Connecting lines

Comment

Answer: Option [A]
(90) An adjacency matrix representation of a graph cannot contain information of:
[A] nodes
[B] edges
[C] parallel edges
[D] direction of edges

Comment

Answer: Option [C]

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