区块内研社千倍收益实操之NFT项目方培训
2022-12-08 21:14 作者:janet19961217 | 我要投稿
class VIPAndCouponStrategy implements DiscountStrategy {
@Override
public double calculate(double value) {
return value * 0.8 - 100;
}}class NormalStrategy implements DiscountStrategy {
@Override
public double calculate(double val
