我有以下代碼來繪製的RadialGradientPaint圓: public class Display extends JPanel {
@Override
public void paintComponent(Graphics g){
// SETUP
BufferedImage base = new BufferedImage(getWidth()
我的代碼是一個值爲2d列表的字典。我需要編寫一個函數,將字典中每個列表中的所有索引號加起來。以下是我迄今爲止: def totalQty(theInventory):
totalQuantity = 0
for key in theInventory:
for book in key:
totalQuantity += book[3]
theInventory是字