ADD file via upload

class

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+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class AmountAnalysisStrategy implements OrderAnalysisStrategy {
+    @Override
+    public Map<String, Object> analyze(List<Order> orders) {
+        Map<String, Object> result = new HashMap<>();
+        
+        if (orders == null || orders.isEmpty()) {
+            result.put("message", "没有订单数据可供分析");
+            return result;
+        }
+        
+        double totalAmount = 0;
+        double maxAmount = Double.MIN_VALUE;
+        double minAmount = Double.MAX_VALUE;
+        double totalDiscount = 0;
+        
+        for (Order order : orders) {
+            double finalAmount = order.getFinalAmount();
+            totalAmount += finalAmount;
+            totalDiscount += order.getDiscountAmount();
+            
+            if (finalAmount > maxAmount) {
+                maxAmount = finalAmount;
+            }
+            if (finalAmount < minAmount) {
+                minAmount = finalAmount;
+            }
+        }
+        
+        double averageAmount = totalAmount / orders.size();
+        
+        result.put("totalOrders", orders.size());
+        result.put("totalAmount", totalAmount);
+        result.put("averageAmount", averageAmount);
+        result.put("maxAmount", maxAmount);
+        result.put("minAmount", minAmount);
+        result.put("totalDiscount", totalDiscount);
+        result.put("discountPercentage", (totalDiscount / (totalAmount + totalDiscount)) * 100);
+        
+        return result;
+    }
+    
+    @Override
+    public String getAnalysisName() {
+        return "金额统计分析";
+    }
+    
+    @Override
+    public String getDescription() {
+        return "分析订单的金额分布情况，包括总金额、平均金额、最大/最小金额以及折扣统计";
+    }
+}