userID
userName
balance
addUser()
createExpense()
addPayment()
calculateBalance()
expenseID
description
totalAmount
creatorID
participants
addParticipantToExpense()
paymentID
payerID
receiverID
amount
userID
userName
balance
addUser()
createExpense()
addPayment()
calculateBalance()
expenseID
description
totalAmount
creatorID
participants
addParticipantToExpense()
paymentID
payerID
receiverID
amount
MIT License