### Priority Queue ExampleGiven `numPQueue`: 29, 38, 76#### Understanding the Functions1. **Peek(numPQueue)** - This function returns the smallest element in the priority queue without removing it. **Example Usage**: - `Ex: 100` (Note: Here `100` is just a placeholder example value).#### Operations to PerformAfter performing the following operations on the queue:- `Enqueue(numPQueue, 89)`- `Enqueue(numPQueue, 84)`- `Peek(numPQueue)`- `Dequeue(numPQueue)`#### Questions1. **What is numPQueue?** - Provide the updated state of the queue after performing all the operations listed above. - **Example Input**: `Ex: 1, 2, 3` (Note: This is a placeholder example format).2. **What does GetLength(numPQueue) return?** - This function returns the number of elements currently in the priority queue. - **Example Input**: `Ex: 1` (Note: This is a placeholder example format).#### Interactive Elements- **Check Button**: Clicking this button will check the answers you have provided.- **Next Button**: Clicking this button will proceed to the next question or operation.#### Detailed Explanation of DiagramsBelow the questions, there's a graphical representation of the priority queue:- **Queue Visualization**: - The queue is visually represented with numbered sections indicating the positions of elements. - In the image, positions 1 and 2 are shaded, showing that they currently hold elements. - Position 3 is explicitly highlighted, suggesting it might be the current position of focus or the next position to be filled. - The numbers within the boxes represent the sequence or position in the queue (e.g., 1, 2, 3).This structure helps in visualizing the actual placement and order of operations in the priority queue.

The solutions are given below with code and output peek, enqueue, dequeue operations are performed…

Given numPQueue: 29, 38, 76 What does Peek(numPQueue) return? Ex: 100 After the following operations: Enqueue(numPQueue, 89) Enqueue(numPQueue, 84) Peek(numPQueue) Dequeue(numPQueue) What is numPQueue? Ex: 1, 2, 3 What does GetLength (numPQueue) return? Ex: 1

Given numPQueue: 29, 38, 76 What does Peek(numPQueue) return? Ex: 100 After the following operations: Enqueue(numPQueue, 89) Enqueue(numPQueue, 84) Peek(numPQueue) Dequeue(numPQueue) What is numPQueue? Ex: 1, 2, 3 What does GetLength (numPQueue) return? Ex: 1

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

### Priority Queue Example

Given `numPQueue`: 29, 38, 76

#### Understanding the Functions

1. **Peek(numPQueue)**
- This function returns the smallest element in the priority queue without removing it.

**Example Usage**:
- `Ex: 100` (Note: Here `100` is just a placeholder example value).

#### Operations to Perform

After performing the following operations on the queue:

- `Enqueue(numPQueue, 89)`
- `Enqueue(numPQueue, 84)`
- `Peek(numPQueue)`
- `Dequeue(numPQueue)`

#### Questions

1. **What is numPQueue?**
- Provide the updated state of the queue after performing all the operations listed above.
- **Example Input**: `Ex: 1, 2, 3` (Note: This is a placeholder example format).

2. **What does GetLength(numPQueue) return?**
- This function returns the number of elements currently in the priority queue.
- **Example Input**: `Ex: 1` (Note: This is a placeholder example format).

#### Interactive Elements

- **Check Button**: Clicking this button will check the answers you have provided.
- **Next Button**: Clicking this button will proceed to the next question or operation.

#### Detailed Explanation of Diagrams

Below the questions, there's a graphical representation of the priority queue:

- **Queue Visualization**:
- The queue is visually represented with numbered sections indicating the positions of elements.
- In the image, positions 1 and 2 are shaded, showing that they currently hold elements.
- Position 3 is explicitly highlighted, suggesting it might be the current position of focus or the next position to be filled.
- The numbers within the boxes represent the sequence or position in the queue (e.g., 1, 2, 3).

This structure helps in visualizing the actual placement and order of operations in the priority queue.

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