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You will be creating a stroke-based sketch book app, using stack data structure. The app menu items include the following actions (methods):
draw();
erase();
undo();
redo();
A drawing is made of strokes. When draw() is called, a new stroke is made; when erase() gets called, the latest stroke is deleted from the screen; when undo() is called, the latest stroke is removed, but the record is saved; when redo() is called, the last undo() action (stroke) is recalled back.
Can you design and implement the program, including the above methods, using stack data structure?

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