🎮 CA 03 – Number Guessing Game Leaderboard (Python)

Hi All,

In this task, I implemented a Leaderboard System for a Number Guessing Game using Python.

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📌 Problem Statement

1. Provide an option to view leaderboard details.
2. Sort the leaderboard based on:
   • Difficulty (Easy, Medium, Hard)
   • Attempts (Ascending / Descending)

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💡 Approach

• Used a list of dictionaries to simulate a database.
• Created separate functions:
  • show_leaderboard() → to display data
  • sort_leaderboard() → to sort data
• Used:
  • sorted() function
  • lambda expressions
  • Custom mapping for difficulty sorting
• Implemented a menu-driven program for user interaction.

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🗂️ Leaderboard Data

leaderboard = [
    {"name": "manoj", "difficulty": "Easy", "attempts": 3},
    {"name": "rahul", "difficulty": "Hard", "attempts": 7},
    {"name": "anita", "difficulty": "Medium", "attempts": 5}
]

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📊 Display Leaderboard Function

def show_leaderboard():
    print("\n--- Leaderboard ---")
    for player in leaderboard:
        print(f"Name: {player['name']}, Difficulty: {player['difficulty']}, Attempts: {player['attempts']}")

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🔄 Sorting Function

def sort_leaderboard():
    print("\nSort by:")
    print("1. Difficulty")
    print("2. Attempts")

    choice = int(input("Enter choice: "))

    order = input("Ascending or Descending (a/d): ").lower()
    reverse = True if order == 'd' else False

    if choice == 1:
        order_map = {"Easy": 1, "Medium": 2, "Hard": 3}
        sorted_list = sorted(leaderboard, key=lambda x: order_map[x["difficulty"]], reverse=reverse)
    elif choice == 2:
        sorted_list = sorted(leaderboard, key=lambda x: x["attempts"], reverse=reverse)

    print("\n--- Sorted Leaderboard ---")
    for player in sorted_list:
        print(f"Name: {player['name']}, Difficulty: {player['difficulty']}, Attempts: {player['attempts']}")

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🧭 Menu-Driven Program

while True:
    print("\n1. View Leaderboard")
    print("2. Sort Leaderboard")
    print("3. Exit")

    option = input("Enter option: ")

    if option == "1":
        show_leaderboard()
    elif option == "2":
        sort_leaderboard()
    elif option == "3":
        break
    else:
        print("Invalid option")

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🖥️ Sample Output

1. View Leaderboard
2. Sort Leaderboard
3. Exit

Enter option: 1

--- Leaderboard ---
Name: manoj, Difficulty: Easy, Attempts: 3
Name: rahul, Difficulty: Hard, Attempts: 7
Name: anita, Difficulty: Medium, Attempts: 5

Enter option: 2

Sort by:
1. Difficulty
2. Attempts

Enter choice: 2
Ascending or Descending (a/d): a

--- Sorted Leaderboard ---
Name: manoj, Difficulty: Easy, Attempts: 3
Name: anita, Difficulty: Medium, Attempts: 5
Name: rahul, Difficulty: Hard, Attempts: 7

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🧠 Explanation

• leaderboard stores player details like a database.
• show_leaderboard() prints all records.
• sort_leaderboard():
  • Sorts using sorted()
  • Uses lambda to define sorting key
  • Uses reverse=True for descending order
• Custom mapping is used to sort difficulty logically:
  • Easy → Medium → Hard

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✅ Conclusion

This task helped me understand:

• Data storage using lists and dictionaries
• Sorting techniques in Python
• Writing structured and modular code

🚀 This can be further improved by connecting to a real database or integrating with a full game.

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