Undo/Redo Text Editor

Experience how text editors, IDEs, and design software implement undo/redo functionality using stack data structures. Every change is stored as a command that can be reversed or re-applied.

Editor Controls

Settings

Tip: Use Ctrl+Z (Undo) and Ctrl+Y (Redo) keyboard shortcuts!

How It Works

Stack Data Structure:

Commands are stored in a Last-In-First-Out (LIFO) structure - perfect for undo operations!

Command Pattern:

Each edit is encapsulated as a reversible command object.

Real-World Usage:

Used in VS Code, Photoshop, Word, Google Docs, and every modern editor!

Text Editor(165 chars)

Cursor position: 0Undo available: 0 | Redo available: 0

Undo Stack (0)

Stack is empty

Redo Stack (0)

Stack is empty

Operation History

No operations yet. Start typing or run the demo to see the history!
🎯 Learning Objectives
  • • Stack data structure (LIFO)
  • • Command design pattern
  • • State management in editors
  • • Reversible operations
🔧 Real-World Applications
  • • Text editors (VS Code, Vim)
  • • Design software (Photoshop)
  • • Document editors (Google Docs)
  • • IDEs and code editors
âš¡ Key Concepts
  • • LIFO (Last In, First Out)
  • • Command encapsulation
  • • State restoration
  • • Memory management