Explore topic-wise MCQs in Data Structures and Algorithms.

This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Data Structures and Algorithms knowledge and support exam preparation. Choose a topic below to get started.

1.

Find the error (if any) in the following code snippet for pop operation.

A. run time error
B. compile time error
C. pop operation is performed, but top moved in wrong direction
D. pop operation is performed properlyView Answer
Answer» D. pop operation is performed properlyView Answer
Discussion
2.

What are the set of functions that are to be executed to get the following output?cata) push(c, s); push(a, s); push(t, s); pop(s); pop(s); pop(s);b) push(c,s); pop(s); push(a,s); pop(s);push(t,s);pop(s);c) pop(c ); pop(

A. push(c, s); push(a, s); push(t, s); pop(s); pop(s); pop(s);
B. push(c,s); pop(s); push(a,s); pop(s);push(t,s);pop(s);
C. pop(c ); pop(a); pop(t);
D. push(c,s); push(a,s); pop(t);
Answer» C. pop(c ); pop(a); pop(t);
Discussion
3.

What will be result if the given stack is popped?

A. pat
B. tap
C. atp
D. apt
Answer» C. atp
Discussion
4.

What will be the word obtained if the word “abbcabb” is reversed using a stack?

A. bbabbca
B. abbcabb
C. bbacbba
D. bbacabb
Answer» D. bbacabb
Discussion
5.

Operations required for reversing a word or a string using stack are push() and pop().

A. True
B. False
Answer» B. False
Discussion
6.

WHAT_ARE_THE_SET_OF_FUNCTIONS_THAT_ARE_TO_BE_EXECUTED_TO_GET_THE_FOLLOWING_OUTPUT??$

A.
B. push(c, s); push(a, s); push(t, s);
C. ; pop(s); pop(s);
Answer» C. ; pop(s); pop(s);
Discussion
7.

What will be output if the following sequence of operations are executed?

A. ;
B. ;
C. ;
D. ;
Answer» C. ;
Discussion
8.

How many stacks are required for reversing a word algorithm?

A. one
B. two
C. three
D. four
Answer» B. two
Discussion
9.

What will be the word obtained if the word “abbcabb” is reversed using a stack?$

A. bbabbca
B. abbcabb
C. bbacbba
D. bbacabb
Answer» D. bbacabb
Discussion
10.

What is the time complexity of reversing a word using stack algorithm?

A. O (N log N)
B. O (N<sup>2</sup>)
C. O (N)
D. O (M log N)
Answer» D. O (M log N)
Discussion
11.

Operations required for reversing a word or a string using stack are push() and pop().

A. True
B. False
Answer» B. False
Discussion
12.

Which is the most appropriate data structure for reversing a word?

A. queue
B. stack
C. tree
D. graph
Answer» C. tree
Discussion
13.

Reversing a word using stack can be used to find if the given word is a palindrome or not.

A. True
B. False
Answer» B. False
Discussion