$7\mathrm{.}28$ LAB: Vending machine

Given three integers as user inputs that represent the number of bottles of drinks to purchase, to restock, and to purchase afterward, create a VendingMachine object that performs the following operations:

Purchase the first input number of bottles of drinks

Restock the second input number of bottles of drinks

Purchase the last input number of bottles of drinks

Report inventory

The VendingMachine is found in VendingMachine.java: A VendingMachine's initial inventory is $20$ bottles of drinks.

Ex: If the input is:

$527$

the output is:

Inventory: $10$ bottles