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Which of the following is not a type of tree traversal?
A. Preorder
B. Postorder
C. Inorder
D. Randomorder
Answer: Randomorder
What is the main advantage of a doubly linked list over a singly linked list?
A. Traversal in both directions
B. Less memory usage
C. Faster insertion
D. Faster sorting
Answer: Traversal in both directions
What data structure is used in the Breadth First Search algorithm?
A. Queue
B. Stack
C. Priority Queue
D. Heap
Answer: Queue
What is the space complexity of Merge Sort?
A. O(n)
B. O(1)
C. O(n log n)
D. O(n^2)
Answer: O(n)
Which algorithm is used to find the shortest path in a graph?
A. Dijkstra's Algorithm
B. Merge Sort
C. Depth First Search
D. Breadth First Search
Answer: Dijkstra's Algorithm
Which of the following is not a characteristic of a heap?
A. Complete binary tree
B. Parent node is greater than or equal to its children in max heap
C. Sorted structure
D. Supports insert and delete-min operations
Answer: Sorted structure
What is the worst-case time complexity of Bubble Sort?
A. O(n^2)
B. O(n log n)
C. O(n)
D. O(1)
Answer: O(n^2)
Which sorting algorithm has the best average-case time complexity?
A. Merge Sort
B. Quick Sort
C. Insertion Sort
D. Selection Sort
Answer: Merge Sort
Which of the following data structures is used to implement recursion?
A. Stack
B. Queue
C. Array
D. Heap
Answer: Stack