You need to implement a queue using two stacks. What is the time complexity of the dequeue operation in the worst-case scenario?
O(1)
O(log n)
O(n log n)
O(n)
In a circular queue implemented using an array of size 5, if the front is at index 3 and the rear is at index 1, how many elements are present in the queue?
2
1
4
3
What is the key advantage of using a linked list implementation for a queue over an array-based implementation?
Lower memory usage
Easier to implement
Dynamic resizing to prevent overflow
Faster enqueue and dequeue operations
Which of the following data structures can be efficiently used to implement a priority queue?
Binary Search Tree
Binary Heap
Doubly Linked List
Hash Table
Which of the following situations is MOST likely to benefit from using a priority queue?
Implementing a Last-In-First-Out (LIFO) data structure
Managing tasks based on their urgency level
Storing a collection of sorted integers
Performing a breadth-first search in a graph
You are designing a system where elements are added and removed from both ends. Which data structure is the most suitable?
Deque
Stack
Queue
Binary Tree
How can you prevent a queue implemented using a linked list from encountering an overflow condition?
Implement a check for available memory before each enqueue operation
Linked list implementation inherently prevents overflow
Use a fixed-size array instead of a linked list
Use a circular linked list
Which of the following operations is NOT efficiently supported by a standard queue data structure?
Enqueue at the rear
Search for a specific element
Dequeue from the front
Get the front element
What is the time complexity of inserting an element into a priority queue implemented using a binary heap (in the average case)?
In a scenario simulating a print queue, where print jobs with higher priority should be executed first, which queue implementation is most suitable?
Circular queue
Deque (Double-ended queue)
Priority queue
Simple queue