Implement the Low-Level Design (LLD) of Splitwise.

Question

Accepted Answer

Design a system to manage shared expenses among friends, tracking who owes whom and settling debts efficiently.

User Management: Each user has a unique ID, name, and contact information.
Expense Tracking: Users can add expenses with details like amount, participants, and description.
Debt Calculation: Automatically calculate how much each user owes or is owed after an expense is added.
Settlement: Allow users to settle debts through various methods (e.g., cash, bank transfer) and update records accordingly.
Notifications: Send reminders to users about pending payments or debts.
Reporting: Generate reports showing total expenses, individual contributions, and outstanding debts.

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