To-Do List Application: Task Management and Organization System

This project is a feature-rich to-do list application aimed at effectively managing and organizing tasks for a diverse range of users, from students to professionals. It offers robust task management, prioritization, categorization, and progress tracking functionalities, along with an intuitive user interface.

Index

1. Problem Statement
2. Solution Approach
3. Data Structures Used and Why
4. Implementation

Problem Statement

Develop a user-friendly and efficient to-do list application to help users prioritize, categorize, and track tasks. The application will serve as an organizational tool for users handling various workloads.

Key Objectives

1. Task Management

   • Create, edit, and delete tasks.
   • Assign due dates, reminders, and priorities.

2. Task Categorization

   • Implement tagging for task categories.
   • Allow filtering and sorting based on categories.

3. Progress Tracking

   • Visualize task completion with progress bars or checkmarks.
   • Maintain a history of completed tasks.

4. User Experience

   • Design an intuitive interface with responsive and visually appealing elements.

5. Additional Features

   • Add note-taking capabilities for detailed task descriptions.
   • Suggest important tasks using prioritization algorithms.

Solution Approach

1. User Interface Design

• An intuitive and responsive design adaptable to multiple devices.
• Visual indicators (e.g., icons, checkmarks) for task status.

2. Task Management

• Add, edit, remove, and mark tasks as complete.
• Store tasks efficiently in hierarchical or structured data formats.

3. Task Prioritization

• Assign priority levels to tasks.
• Use scheduling algorithms to organize tasks by urgency and importance.

4. Due Date and Notification System

• Notify users about upcoming deadlines via reminders.
• Offer snooze/postpone options for flexible workload management.

5. Task Categorization

• Tag tasks for efficient categorization.
• Enable filtering/sorting based on categories or tags.

6. Advanced Search

• Implement robust search functionalities with fuzzy search to handle typos.

7. Undo/Redo and Version Control

• Provide undo/redo actions for task modifications.
• Maintain a history of changes for version control.

8. Task Dependencies

• Manage task relationships using dependency graphs.
• Prevent dependent tasks from completion before prerequisite tasks.

9. Task Visualization

• Incorporate Gantt charts or kanban boards for progress tracking.

Data Structures Used and Why

Current Data Structures

1. Vector
   • Stores a flat list of tasks, offering simplicity and quick access.

Proposed Enhancements

1. Tree Data Structure

   • Represents hierarchical relationships (parent/child tasks).
   • Facilitates efficient task retrieval and dependency management.

2. Hash Table

   • Manages task categories for fast lookup and sorting.

3. Priority Queue

   • Prioritizes tasks for quick retrieval of high-priority tasks.

Benefits

• Enhanced organization for complex tasks and dependencies.
• Optimized task prioritization and retrieval.
• Reduced memory usage for larger datasets.

Implementation

Programming Language and Libraries

• Language: C++
• Libraries: None (lightweight and platform-independent implementation).

Key Components

1. Task Class

   • Attributes: name, status, priority, dueDate, categories, reminderDate, and dependencies.

2. Task Management Features

   • Add Task: Creates a new task with default status and priority.
   • Remove Task: Deletes a specified task while tracking changes in an undo stack.
   • Mark Complete: Updates task status to "Complete."

3. Undo/Redo Mechanism

   • Uses two stacks (undoStack and redoStack) to track task modifications.

4. Task Dependencies

   • Establishes relationships between tasks using a dependency graph.

5. Task Prioritization

   • Utilizes a priority queue to prioritize tasks dynamically.

6. Visualization

   • Progress bars and kanban boards for task tracking.