Object-Oriented Programming · Anthropic · Medium
Hash Map with Sequential IDs The central requirement in this design is retrieving and updating tasks exclusively by their generated string IDs. Because every operation targets a single key, a hash map (or dictionary) is the ideal backing store — it provides average constant‑time lookups, insertions, and updates. Intuition We issue IDs in ascending order using a simple counter that starts at 1. When a new task is added, the counter is turned into a string like "taskId1", the…