In text editors, the undo feature can be implemented using a stack. What could each entry in the stack be typically?Group of answer choicesThe position of the cursor.A pointer to the previous document state.A command or an action performed.A copy of the entire document.
Question
In text editors, the undo feature can be implemented using a stack. What could each entry in the stack be typically?Group of answer choicesThe position of the cursor.A pointer to the previous document state.A command or an action performed.A copy of the entire document.
Solution
Each entry in the stack could typically be a command or an action performed. This is because when you perform an action in a text editor, such as typing a word or deleting a sentence, that action is pushed onto the stack. If you want to undo that action, the text editor pops the action off the stack and undoes it. This allows you to easily undo multiple actions in the order they were performed, which is a key feature of many text editors.
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