diff --git a/w2/DataCleaner.class b/w2/DataCleaner.class
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diff --git a/w2/DataCleaner.java b/w2/DataCleaner.java
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+++ b/w2/DataCleaner.java
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+public class DataCleaner {
+    public static void main(String[] args) {
+        int[] sensorData = {85, -5, 92, 0, 105, 999, 88, 76};
+        
+        int validSum = 0;   // 有效数据总和
+        int validCount = 0; // 有效数据个数
+
+        // 遍历数组
+        for (int data : sensorData) {
+            // 致命错误：遇到999，终止处理
+            if (data == 999) {
+                System.out.println("致命错误：传感器掉线，终止处理");
+                break;
+            }
+            // 无效数据：0/负数/大于100，跳过并警告
+            if (data <= 0 || data > 100) {
+                System.out.println("警告：发现越界数据[" + data + "]，已跳过");
+                continue;
+            }
+            // 有效数据：1~100，计入总和与个数
+            validSum += data;
+            validCount++;
+        }
+
+        // 输出结果
+        if (validCount > 0) {
+            double average = (double) validSum / validCount;
+            System.out.println("有效数据的平均值：" + average);
+        } else {
+            System.out.println("无有效数据");
+        }
+    }
+}
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diff --git a/w2/杩愯鎴浘.png b/w2/杩愯鎴浘.png
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