Requirements

Functional:

1. Receive stock from partners.
2. Expose methods to check stock and place orders for customers.
3. Order storage locations by frequency of stock. i.e., the most frequent closest to the exit.
4. Notify the logistic partner for transport
5. Track partner and customer orders along the supply chain.

Non-functional:

1. The ordering of storage locations mechanism should be easily changed.

Define Core Objects

Warehouse, Order, PartnerOrder, CustomerOrder, Item, StorageLocations

StorageManager, ArrangementStrategy, FrequencyArrangementStrategy

Analyze Relationships

Warehouse has a StorageManager

StorageManager has a ArrangementStrategy

Order has a StorageManager

Order has Items

FrequencyArrangementStrategy is an ArrangementStrategy

PartnerOrder is an Order

CustomerOrder is an Order

FrequencyArrangementStrategy has two hash maps.

Map idToFrequency

Map> frequencyToItemIds

add(item, count) and remove(item, count) methods update the above two maps

Establish Hierarchy

FrequencyArrangementStrategy is an ArrangementStrategy

PartnerOrder is an Order

CustomerOrder is an Order

Design Patterns

Strategy pattern to sort StorageLocations

Define Class Members (write code)

Attributes: For each class, define the attributes (data) it will hold...

Methods: Define the methods (functions) that operate on the attributes. Ensure they align with the object's responsibilities and adhere to the principle of encapsulation.

Adhere to SOLID Guidelines

Check and explain whether your design adheres to solid principles (Ask interviewer what SOLID principle is if you can not recall it.)...

Consider Scalability and Flexibility

The ordering of storage locations mechanism could be easily changed

Create/Explain your diagram(s)

Try creating a class, flow, state and/or sequence diagram using the diagramming tool. Mermaid flow diagrams can be used to represent system use cases. You can ask the interviewer bot to create a starter diagram if unfamiliar with the tool. Briefly explain your diagrams if necessary...

Future improvements

Critically examine your design for any flaws or areas for future improvement...