Lecture_Notes/imperfect_notes/pragy/Machine Coding Splitwise.md

Machine Coding Splitwise

Create Splitwise

• Has everyone used splitwise?

• Social expense management app

• Simplifies bookkeeping amongst groups

• start coding? yay? \o/

• no. Requirements first

Requirements

• A user can add an expense. While adding the expense, the amount can be split amongst any other users
• Expense can be of 3 types
  • split equally
    • take care of missing money
  • unequal: value
  • unequal: percentage
• The total expense must add up to 100% (or the total money value)
• Proper validation must be done for the expense
  • 2 decimals, because currency
  • 2 decimals for % as well
• Users must have their details
• Show expenses of user
• show balance report of all users
• Show balance report of a user against all users
  • don't show user if s/he has 0 balance against a user

Input format

• record expense
  • who_paid
  • people in the group
  • expense type - equal/exact/percent
  • if expense is unequal - the values
• show all - current balances
• show userid - current balance
• passbook userid - history
• simplify expenses

a -100-> b b -100-> c

a -100-> c

Output format