Posted inUncategorized DSA (Data Structures and Algorithms) Interview Questions Quiz (Multiple Choice) Posted by Mr. AI October 16, 2025 Spread the love Data Structures and Algorithms (DSA) Data Structures and Algorithms (DSA) 1 / 25 Which data structure is used for implementing recursion? Queue Stack Array Linked List 2 / 25 Which sorting algorithm is based on divide and conquer technique? Bubble Sort Selection Sort Merge Sort Insertion Sort 3 / 25 Which traversal of a Binary Search Tree gives elements in sorted order? Preorder Postorder Inorder Level Order 4 / 25 Which data structure is used to implement BFS in a graph? Queue Stack Deque Heap 5 / 25 What is the time complexity of inserting an element at the end of an array (amortized)? O(1) O(n) O(log n) O(n log n) 6 / 25 Which of the following is not a stable sorting algorithm? Merge Sort Bubble Sort Quick Sort Insertion Sort 7 / 25 Which of the following is used to find the shortest path in a weighted graph? DFS Prim’s Algorithm Dijkstra’s Algorithm Kruskal’s Algorithm 8 / 25 Which data structure is used for evaluating expressions? Array Stack Queue Heap 9 / 25 Which of the following algorithms is used to detect a cycle in a graph? Prim’s Floyd’s DFS BFS 10 / 25 What is the auxiliary space complexity of merge sort? O(1) O(log n) O(n) O(n log n) 11 / 25 Which operation is expensive in an array? Insertion at end Random access Insertion in middle Traversal 12 / 25 Which of the following is not an application of stack? Function calls Undo feature Balanced parentheses BFS traversal 13 / 25 Which data structure is most suitable for implementing a priority queue? Heap Stack Deque Array 14 / 25 Which algorithm is used to find the minimum spanning tree? Dijkstra’s Algorithm Bellman-Ford Kruskal’s Algorithm Floyd-Warshall 15 / 25 Which of the following statements is true about hash tables? Average search time is O(n) Average search time is O(1) Worst-case search is O(1) All are true 16 / 25 Which traversal method is used to copy a binary tree? Inorder Preorder Postorder Level Order 17 / 25 Which of the following can be used to check for balanced parentheses in an expression? Queue Array Stack Tree 18 / 25 In a min-heap, the smallest element is located at: Root Leaf Rightmost Node Middle Node 19 / 25 What is the time complexity of binary search? O(n) O(log n) O(n log n) O(1) 20 / 25 Which traversal technique uses a queue data structure? DFS Inorder BFS Postorder 21 / 25 What is the worst-case time complexity for searching in a hash table? O(1) O(log n) O(n) O(n log n) 22 / 25 Which data structure is used for managing function calls? Queue Stack Heap Array 23 / 25 Which of the following is not a type of linked list? Singly linked list Doubly linked list Circular linked list Recursive linked list 24 / 25 Which sorting algorithm is most suitable for linked lists? Quick Sort Merge Sort Selection Sort Bubble Sort 25 / 25 Which of the following data structures is linear? Graph Tree Queue Heap Your score isThe average score is 36% 0% Restart quiz Mr. AI My name is Ram. I am a Data Scientist and Machine Learning expert with good knowledge in Generative AI. Working for a top MNC in New York city. I am writing this blog to share my knowledge with enthusiastic learners like you. View All Posts Post navigation Previous Post Generative AI: A Deep Dive into Models Like GANs and VAEsNext PostC Programming Language Interview Questions Quiz (Multiple Choice)
