Design and implement a tiny Spreadsheet engine. Rules / constraints Follow-ups Example This mirrors the interview: start with simple DFS, then show scalability via caching + dependency invalidation, and optionally cycle detection. The VOprep team has long accompanied candidates through various major company OAs and VOs, including OpenAI, Google, Amazon, Citadel, SIG, providing real-time voice assistance, remote…

Implement Spreadsheet with Cells You are asked to design a simple Spreadsheet system consisting of multiple cells, where each cell can either contain a numeric value or depend on other cells by referencing them as children. Each cell can be represented as an object: If a cell contains a value, it’s a constant.If it contains…

Credits You’re building a system to track balances for the OpenAI API credit purchasing system. API users can purchase credit grants, specified by an ID, that are active at a timestamp and that let them use the API. Unused credit grant balances expire at a certain time. However, there’s a kink in our system: requests…

Given N free bytes in memory, implement the following two functions: Restrictions: Example (in Python): Example usage and expected behavior: Summary Core idea: manage free memory as a list of intervals. Approach: This problem mainly tests interval manipulation, state consistency, and low-level resource management logic. The VOprep team has long accompanied candidates through various major company OAs…