Anthropic Online Assessment -- Task Management System

Requirements Level 1 Implement a simple task management system that handles tasks with CRUD operations. - addTask(taskId: String, priority: Int) -> Boolean: Adds a task. Returns false if the taskId already exists; otherwise, returns true. - updateTask(taskId: String, newPriority: Int) -> Boolean: Updates the priority of an existing task. Returns false if the task is not found. - getTask(taskId: String) -> Task | null: Returns the task details. Example: image slide 1. Level 2 Implement Search and Sorting functions based on task priority. - searchTasks(minP: Int, maxP: Int) -> List: Returns a list of taskIds where minP <= priority <= maxP. - Sorting Requirement: Results must be sorted by priority (descending). - Tie-breaking: If priorities are equal, sort by creation order (descending)—meaning the task added most recently appears first. Example: image slide 2. Level 3 Introduce user ownership, time-sensitive expiration, and resource limits. - addUser(userId: String, quota: Int) -> Boolean: Registers a user with a maximum number of active tasks. Returns false if the userId already exists. - assignTask(taskId: String, userId: String, priority: Int, ttl: Int, timestamp: Int) -> Boolean: - Checks if the user exists and has not exceeded their quota. - Calculates expiration: Task expires at timestamp + ttl. - Returns false if the user is at quota, the user doesn't exist, or the taskId already exists. Note: Before processing, the system must expire any tasks whose timestamp + ttl <= current_timestamp. Example: image slide 3. Level 4 Track the lifecycle of tasks to differentiate between successful completion and expiration. - completeTask(taskId: String, finishTime: Int) -> Boolean: Marks a task as "Completed." Returns false if the task does not exist, has already expired (based on finishTime), or was already completed. If successful, the user’s active task - count decreases, freeing up quota. - getOverdueTasks() -> List: Returns a list of taskIds that transitioned to an "Expired" state without being completed. Example: image slide 4.