From 47a08057a4bc468cd2e25c657f5a133ab4998c9d Mon Sep 17 00:00:00 2001
From: Chengwuyi <3394813085@qq.com>
Date: Sat, 30 May 2026 22:16:44 +0800
Subject: [PATCH] =?UTF-8?q?=E4=B8=8A=E4=BC=A0=E6=96=87=E4=BB=B6=E8=87=B3?=
 =?UTF-8?q?=20'w2'?=
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---
 w2/DataCleaner.java | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 w2/DataCleaner.java

diff --git a/w2/DataCleaner.java b/w2/DataCleaner.java
new file mode 100644
index 0000000..5e7a514
--- /dev/null
+++ b/w2/DataCleaner.java
@@ -0,0 +1,35 @@
+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
+
+        for (int x : sensorData) {
+            // 致命错误：传感器掉线，立即终止
+            if (x == 999) {
+                System.out.println("致命错误：传感器掉线，终止处理");
+                break;
+            }
+
+            // 无效数据：越界，跳过
+            if (x <= 0 || x > 100) {
+                System.out.println("警告：发现越界数据 [" + x + "]，已跳过");
+                continue;
+            }
+
+            // 正常范围：计入统计
+            validSum   += x;
+            validCount++;
+        }
+
+        // 最终输出
+        if (validCount > 0) {
+            // 用双精度除法保留小数，避免整数除法陷阱
+            double average = (double) validSum / validCount;
+            System.out.printf("有效数据平均值：%.2f%n", average);
+        } else {
+            System.out.println("无有效数据");
+        }
+    }
+}