public List<Sheet> nextFit(List<Shape> shapes) {

		/*
		 * Start with an empty list of sheets (remember each sheet has a width
		 * of 300 and a height of 250 as specified in the Sheet class)
		 */
		List<Sheet> usedSheets = new ArrayList<Sheet>();

		/* Variables for the most recent sheet, most recent shelf and leftmost shape on the shelf */
		Sheet mrSheet = null;
		Shelf mrShelf = null;
		Shape leftShape = null;

		usedSheets.add(new Sheet());
		mrSheet = usedSheets.get(usedSheets.size()-1);

		usedSheets.get(usedSheets.size()-1).addShelf(new Shelf());
		mrShelf = mrSheet.getShelves().get(mrSheet.getShelves().size()-1);

		usedSheets.get(usedSheets.size()-1).getShelves().get(usedSheets.get(usedSheets.size()-1).getShelves().size()-1).place(shapes.get(0));
		mrSheet.updateShapeCount();
		leftShape = mrShelf.getShapes().get(0);

		/* Loops through each shape starting at index 1 */
		for (int i = 1; i < shapes.size(); i++)
		{
			/* Checks most recent sheet shape count */
			if (mrSheet.getShapeCount() < 20) {

				/* Checks most recent shelf */
				if (shapes.get(i).getHeight() <= leftShape.getHeight() && shapes.get(i).getWidth() <= (Sheet.SHEET_WIDTH - mrShelf.getWidth()))
				{
					mrShelf.place(shapes.get(i));
					mrSheet.updateShapeCount();
				}

				/* Checks rotated shape */
				else if (shapes.get(i).getWidth() <= leftShape.getHeight() && shapes.get(i).getHeight() <= (Sheet.SHEET_WIDTH - mrShelf.getWidth()))
				{
					shapes.get(i).rotate();
					mrShelf.place(shapes.get(i));
					mrSheet.updateShapeCount();
				}

				/* Checks if shelf can be created */
				else if (shapes.get(i).getHeight() <= (Sheet.SHEET_HEIGHT - mrSheet.allShelvesHeight()))
				{
					mrSheet.addShelf(new Shelf());
					mrShelf = mrSheet.getShelves().get(mrSheet.getShelves().size()-1);
					mrShelf.place(shapes.get(i));
					leftShape = mrShelf.getShapes().get(0);
					mrSheet.updateShapeCount();
				}

				/* Checks if rotated shape can do new shelf */
				else if (shapes.get(i).getWidth() <= (Sheet.SHEET_HEIGHT - mrSheet.allShelvesHeight()))
				{
					shapes.get(i).rotate();
					mrSheet.addShelf(new Shelf());
					mrShelf = mrSheet.getShelves().get(mrSheet.getShelves().size()-1);
					mrShelf.place(shapes.get(i));
					leftShape = mrShelf.getShapes().get(0);
					mrSheet.updateShapeCount();
				}

				else
				{
					usedSheets.add(new Sheet());
					mrSheet = usedSheets.get(usedSheets.size()-1);
					mrSheet.addShelf(new Shelf());
					mrShelf = mrSheet.getShelves().get(mrSheet.getShelves().size()-1);
					mrShelf.place(shapes.get(i));
					leftShape = mrShelf.getShapes().get(0);
					mrSheet.updateShapeCount();
				}
			}

			else
			{
				/* If all of the above fails, creates a new sheet and places shape */
				usedSheets.add(new Sheet());
				mrSheet = usedSheets.get(usedSheets.size()-1);
				mrSheet.addShelf(new Shelf());
				mrShelf = mrSheet.getShelves().get(mrSheet.getShelves().size()-1);
				mrShelf.place(shapes.get(i));
				mrSheet.updateShapeCount();
			}
		}
		return usedSheets;
	}