Here we explore the Three Advanced Types of Queues: –
1. Circular Queue
A Circular Queue is a linear Data Structures in which the last position is connected back to the first position to make a circle.
Key Characteristics
- Fixed Size: – It has a fixed size, and elements are enqueued and dequeued in a circular manner.
- Circular Increment: – The next position of the last index is the first index which makes the Queue Circular.
- Front and Rear: – Two Pointers, front and rear, track positions for dequeuing and enqueuing respectively.
2. Priority Queues
A Priority Queues is an Abstract Data Type where each element is associated with a priority. Elements are dequeued based on their priority rather than their position in the Queue.
Key Characteristic
- Priority Levels: – Each element has a priority level assigned to it.
- Ordered Queue: – The highest Priority elements are dequeued before those with lower priority.
- Dynamic Order: – The order of elements can change dynamically as priorities are assigned.
3. Deque (Double-Ended Queue)
A Deque (Double-Ended Queue) is a more generalized form of queue where elements can be added or removed from both ends. This flexibility allow it to function both as a Queue and a stack.
Key Characteristicss
- Bidirectional Operations: – Support insertion and deletion operations at both the front and rear end.
- Versatility:- It can be used to implement both FIFO and LIFO structures.
- Dynamic Size: – Typically implemented using dynamic arrays or linked lists to accommodate varying sizes.