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Splitwise

1. Add/remove users

2. Add group + add/remove users to a group

3. Add expenses between 2 users. (p2p expense)

4. Add group expenses. [Txn can be made within subset of people from group (ex: 10 people txn can be made within 2,3,4…..10 people]

5. Implement Equal split, keep code extensible for custom split.

6. Should be able to settle the balance between 2 users. (it should mark settlement in all groups too) Ex: user_1 owes user_2 Rs 100 as P2P User_1 owes user_2 Rs 120 in group_1 User_2 owes user_1 Rs 130 in group_2 Net Balance: (100+120)-130 = 90 There is no partial settlement as an MVP product

Extension if time allows: Split unequally/custom one person pays and custom cost for each participant in a group.

Expectation: Write a clean code keeping in mind OOPS principle and extensibility of code. Use in memory data structures to keep track of records or use in-memory db if you are comfortable.