Learn Before
Implementing an 'Undo' Feature
A software developer is building a simple text editor and needs to implement an 'undo' feature. This feature should allow a user to reverse their most recent actions one by one. For example, if a user types 'hello', then makes it bold, then adds ' world', pressing 'undo' once should remove ' world', pressing it again should remove the bold formatting, and pressing it a third time should remove 'hello'. Explain why a data structure that operates on a 'last-in, first-out' (LIFO) principle is the most suitable choice for managing the history of user actions for this feature.
0
1
Tags
Python Programming Language
Data Science
Computing Sciences
Foundations of Large Language Models Course
Analysis in Bloom's Taxonomy
Cognitive Psychology
Psychology
Social Science
Empirical Science
Science
Related
Initial State in Bracket Balancing: Empty Stack
Consider the following sequence of operations on a data structure that behaves in a 'last-in, first-out' manner. What will be the final contents of the
data_structurelist after all the operations are executed?data_structure = [] data_structure.append('A') data_structure.append('B') data_structure.pop() data_structure.append('C') data_structure.append('D') data_structure.pop()Implementing an 'Undo' Feature
Consider the following Python code snippet which uses a list to simulate a data structure that operates on a 'last-in, first-out' (LIFO) principle. Arrange the following states of the
itemslist in the chronological order they occur as the code executes from top to bottom.items = [] items.append(42) # State 1 items.append(15) # State 2 items.pop() # State 3 items.append(88) # State 4