Imagine you are tasked with designing a system for undo functionality in a text editor application. How would you implement a stack-based approach to track and revert changes made by the user?

  • Implement a hash map to store states and retrieve them for undo actions.
  • Maintain a stack of states for each edit, pushing new states with every change and popping for undo.
  • Use a priority queue to keep track of changes, and dequeue for undo operations.
  • Utilize a linked list to create a history of changes, traversing backward for undo functionality.
A stack-based approach for undo functionality involves maintaining a stack of states. Each edit results in pushing a new state onto the stack, allowing efficient tracking and reverting of changes.
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