Data Structures and Algorithms Multiple Choice Questions (MCQs)
We have compiled a list of 100+ questions with answers from Data Structures and Algorithms that help you to check your basic knowledge of data structures and prepare for competitive exams. All these multiple choice questions are prepared by the subject experts from authentic resources. Attempt all the questions and check your Data Structures and Algorithms knowledge online. This category contains questions from basic concepts of data structure.
Following are the important multiple choice questions with answers from the Data Structures and Algorithms section. You can choose the correct answer from option A, B, C and D.
Data Structures & Algorithms MCQs Practice MCQ Question and Answer
31
Which traversal method is used in Depth-First Search (DFS) of a graph?
Answer & Solution
Answer: Option B
DFS is typically implemented using pre-order traversal logic.
32
Which data structure is optimal for implementing recursion?
Answer & Solution
Answer: Option B
Stacks support the LIFO behavior of function calls.
33
What is the time complexity of inserting an element at the beginning of a singly linked list?
Answer & Solution
Answer: Option A
It only involves changing a few pointers constant time.
34
Which sorting algorithm is considered stable?
Answer & Solution
Answer: Option C
Merge sort retains the relative order of equal elements.
35
In which data structure are elements added and removed from the same end?
Answer & Solution
Answer: Option B
Stack adds and removes from the top.
36
Which algorithm is used to find the shortest path in a graph with non-negative edge weights?
Answer & Solution
Answer: Option C
Dijkstra's Algorithm is used for this purpose.
37
Which data structure is used in Breadth-First Search (BFS) of a graph?
Answer & Solution
Answer: Option B
BFS explores level-wise using a queue.
38
What is the worst-case time complexity of Quick Sort?
Answer & Solution
Answer: Option B
Occurs when pivot elements are poorly chosen (e.g., already sorted array).