Introduction to Data Structures

By: Prof. Dr. Fazal Rehman | Last updated: May 14, 2025

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1. : Which of the following is a linear data structure?





2. : Which data structure uses LIFO (Last In First Out) order?





3. : What is the primary purpose of a queue?





4. : In which data structure can insertion and deletion be done from both ends?





5. : Which of the following is NOT a characteristic of a linked list?





6. : What is the time complexity of accessing an element in an array?





7. : Which data structure is best suited for implementing recursion?





8. : What does a binary tree node typically contain?





9. : Which traversal method visits nodes in the order: left, root, right?





10. : What is the maximum number of children a binary tree node can have?





11. : Which of the following is a self-balancing binary search tree?





12. : What is the primary advantage of using a hash table?





13. : Which of the following is true about a circular linked list?





14. : Which sorting algorithm has the best average case time complexity?





15. : What is the time complexity of inserting an element in a balanced binary search tree?





16. : In which data structure are elements added at the back and removed from the front?





17. : Which of the following operations is NOT typically performed on a stack?





18. : What is a disadvantage of linked lists compared to arrays?





19. : What type of data structure is used to implement a priority queue?





20. : Which data structure is best for implementing a function call stack?





21. : In a binary search tree, the left child is always…





22. : What is the main characteristic of a graph?





23. : Which of the following is a characteristic of a depth-first search?





24. : Which of the following data structures can have duplicate elements?





25. : What is the primary disadvantage of a hash table?





26. : Which of the following is a non-linear data structure?





27. : What is the space complexity of an array of size n?





28. : Which traversal method visits nodes in the order: root, left, right?





29. : In a doubly linked list, each node contains…





30. : Which of the following sorting algorithms has the worst case time complexity of O(n²)?





31. : What is the average time complexity for searching an element in a binary search tree?





32. : In which data structure are elements ordered by priority?





33. : Which data structure is used to implement breadth-first search?





34. : What is the primary benefit of using a binary search tree?





35. : Which of the following represents a non-linear data structure?





36. : What is the time complexity of deleting the minimum element from a min-heap?





37. : Which data structure allows for efficient insertion and deletion at both ends?





38. : What is a key characteristic of a hash function?





39. : What is the worst-case time complexity of searching in a balanced binary search tree?





40. : Which of the following is not a type of linked list?





41. : Which traversal of a tree is used to obtain a sorted order of elements?





42. : What data structure is ideal for implementing a function call?





43. : What is the average-case time complexity for insertion in a hash table?





44. : In a binary tree, the maximum number of nodes at level k is given by…





45. : What is a key advantage of using an array over a linked list?





46. : Which data structure is used for implementing backtracking algorithms?





47. : What is the characteristic of a binary heap?





   

Data Structures MCQs

Basic Concepts
  1. Introduction to Data Structures
  2. Complexity Analysis MCQs
Linear Data Structures MCQs
  1. Arrays MCQs
  2. Linked Lists MCQs
  3. Stacks MCQs
  4. Queues MCQs
Non-Linear Data Structures MCQs
  1. Trees MCQs
  2. Heaps MCQs
  3. Graphs MCQs
Hashing MCQs MCQs
  1. Hash Tables
Sorting and Searching Algorithms MCQs 
  1. Sorting Algorithms MCQs
  2. Searching Algorithms MCQs
Miscellaneous
  1. Memory Management in data structures MCQs
  2. String Manipulation Algorithms MCQs
  1. Data Structures MCQs 1
  2. Data Structures MCQs 2
  3. Data Structures MCQs 3
  4. Data Structures MCQs 4
  5. Data Structures MCQs 5
  6. Stacks Solved MCQs
  7. Queues MCQs
  8. pointer mcqs
  9. Array MCQs
 

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