mishra2019 / balance-sheet-generator

Technical Assignment

Assignment to test fundamental knowledge for Prism Force. This can be written in any language or framework.

Problem statement

Write a file which will take a json object containing the revenue and expense data of a company, and output its balance sheet month wise. The revenue and expense may be fixed or variable amounts payable in installments.

The program should output the answer/ balance sheet to the console. The balance for any month is the sum of all revenue for the month - sum of all expense for the month (revenue.amount - expense.amount). Sort the balancesheet in ascending order by timestamp.

Assumptions

• Amount will always be a valid positive number
• startDate will always be a valid ISO timestamp where the year and month may change. The day and time will remain constant
• Date entries may be missing for revenue or expense, assume the amount is 0

Example

Two sample input files with their corresponding expected outputs have been provided for testing.

Look at 1-input.json for the month of March. The expense is 30 while the revenue has 2 entries - amount of 60 and 10. The total balance for March is 60 + 10 - 30 which is 40 - visible in 1-output.json. Revenue and expenses may have multiple entries per month, may have missing data for which you can assume the amount is 0. Their timestamps may not overlap. Eg. Revenue may be for Feb and March, while expenses has data for Jan, March and April - refer to 2-input.json for further examples

Sample data

2 set of files have been included where input is sample input data and output is the expected values.