SplitWise: Group Expense Splitter

This is a backend implementation of a group expense splitting application, written in Python 3. It utilizes object-oriented programming (OOP) principles to efficiently manage and settle debts among a group of people. The program calculates individual balances and provides the simplest way to settle all debts with the minimum number of transactions.

✨ Features

• OOP Design: The system is built with a Person class to represent each member and a Splitwise class to handle the core logic of expense calculation and settlement.
• Minimal Transactions: It uses a greedy algorithm to minimize the number of payments required to settle all debts. This ensures an efficient and straightforward settlement process.
• Clear Output: The program outputs a clear list of who needs to pay whom and how much, simplifying the process of settling up.
• Robust Calculations: Handles floating-point numbers and rounds balances to two decimal places, ensuring accurate financial calculations.

🚀 How to Run

1. Clone the repository:

   git clone [your-repo-url]

2. Navigate to the project directory:

   cd splitwise

3. Run the Python script:

   python splitwise.py

▶️ How to Use

To use the program, you need to provide a list of payments, where each item is a tuple containing a person's name and the amount they paid.

Example:

payments = [
    ("Alice", 100),
    ("Bob", 50),
    ("Charlie", 70),
    ("David", 20)
]

splitter = Splitwise(payments)
settlements = splitter.settle()
for s in settlements:
    print(s)

The output will be a list of payments to settle all debts. For the above example, a possible output would be:

David pays Alice: ₹20.00
Charlie pays Bob: ₹10.00

(Note: The exact output depends on the settlement algorithm's path but will always result in a full settlement.)

👨‍💻 Author

• Pranav - B.E. in Computer Science with Business Systems student.