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/**
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* 折扣策略接口，定义计算折扣的方法
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*/
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package com.orderprocessing;
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public interface DiscountStrategy {
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/**
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* 计算订单折扣金额
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* @param order 需要计算折扣的订单
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* @return 折扣金额
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*/
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double calculateDiscount(Order order);
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} |
