Circular Seating Arrangement Problem Solving

Introduction

In this project, you will learn how to implement a game-like event management system using Python. The goal is to determine the number of the last performer in a circular seating arrangement based on a given counting rule.

👀 Preview

$ python party.py
Please enter the numerical value of the reporting period x:10
The number of the last performer is: 108
$ python party.py
Please enter the numerical value of the reporting period x:18
The number of the last performer is: 254

🎯 Tasks

In this project, you will learn:

• How to create and manage a Python file
• How to implement a function to simulate the counting process
• How to determine the number of the last performer based on the given requirements

🏆 Achievements

After completing this project, you will be able to:

• Understand the logic behind the circular seating arrangement and counting process
• Implement a Python function to solve the problem
• Run the program and obtain the desired output
• Apply your problem-solving skills to real-world scenarios

Skills Graph

Create the party.py File

In this step, you will create the party.py file in the /home/labex/project directory. Follow the steps below to complete this step:

1. Open your preferred text editor or IDE.
2. Create a new file named party.py in the /home/labex/project directory.

cd /home/labex/project
touch party.py

3. Add the following code to the party.py file:

## n represents the total number of people, x represents the number for performing
def game(n, x):
    '''
    Complete the code
    '''

if __name__ == '__main__':
    x = int(input('Please enter the numerical value of the reporting period x:'))
    game(263, x)

This code sets up the basic structure for the party.py file, including the game() function and the main execution block.

Implement the game() Function

In this step, you will implement the game() function to determine the number of the last performer. Follow the steps below to complete this step:

1. Open the party.py file in your code editor.

2. In the game() function, initialize the seats list to represent the seat numbers of all people. The seats list should contain the numbers from 1 to 263.

3. Initialize the index variable to keep track of the current position in the counting.

4. Simulate the counting process until only one person is left. To do this, use a loop that repeats the following steps:

   • Calculate the next position to count by adding x - 1 to the current index and taking the modulus of the length of the seats list.
   • Remove the person at the calculated index from the seats list.

5. The remaining person in the seats list is the last performer. Print the number of the last performer.

Here's the completed game() function:

def game(n, x):
    ## Initialize the seat list, representing the seat numbers of all people
    seats = list(range(1, n + 1))
    ## Initialize the index for counting, representing the current position in counting
    index = 0

    ## Simulate counting until only one person is left
    while len(seats) > 1:
        ## Calculate the next position to count
        index = (index + x - 1) % len(seats)
        ## Remove the person who is counted
        seats.pop(index)

    ## The remaining person is the last performer
    last_performer = seats[0]
    print("The number of the last performer is:", last_performer)

Run the Program

In this step, you will run the party.py program and provide the value of x to see the number of the last performer.

1. Open a terminal or command prompt.
2. Navigate to the /home/labex/project directory.
3. Run the party.py program using the following command:

python party.py

4. When prompted, enter the numerical value of the reporting period x. For example, you can try x = 10 or x = 18.
5. The program will output the number of the last performer.

Here's an example of the program output:

$ python party.py
Please enter the numerical value of the reporting period x:10
The number of the last performer is: 108
$ python party.py
Please enter the numerical value of the reporting period x:18
The number of the last performer is: 254

Congratulations! You have completed the project by implementing the game() function and running the party.py program.

Summary

Congratulations! You have completed this project. You can practice more labs in LabEx to improve your skills.