Toy App with Increasing Requirements | Dataford Interview Questions

Tell me about building a toy application that meets a series of increasingly complex requirements, from initial MVP to later enhancements.

Implement run_toy_app(operations) as a deterministic in-memory application. Support adding, reading, updating, deleting, and listing records by optional ID prefix. Return one result for each operation, sorting listed IDs lexicographically.

The input is a list of operation dictionaries, and the output is a list. Values are integers. get returns null for a missing ID; add, update, and delete return booleans.

Constraints

0 <= operations.length <= 10^4
Each operation has a valid operation type: add, get, update, delete, or list
Record IDs are non-empty strings
Record values are integers
A list operation may omit prefix, which means all records should be included
IDs in list results must be sorted lexicographically

Function Signature

def run_toy_app(operations):

Your question is Toy App with Increasing Requirements. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

Tell me about building a toy application that meets a series of increasingly complex requirements, from initial MVP to later enhancements.

The input is a list of operation dictionaries, and the output is a list. Values are integers. get returns null for a missing ID; add, update, and delete return booleans.

Constraints

0 <= operations.length <= 10^4
Each operation has a valid operation type: add, get, update, delete, or list
Record IDs are non-empty strings
Record values are integers
A list operation may omit prefix, which means all records should be included
IDs in list results must be sorted lexicographically

Function Signature

def run_toy_app(operations):

Your question is Toy App with Increasing Requirements. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.