Merge branch 'master' of http://git.innoschool.org:3000/peisishuang/java

Java源码.md

@@ -0,0 +1,118 @@
+**Java源码**
+
+import java.util.Scanner;
+
+public class TemperatureConverter {
+
+    public static double celsiusToFahrenheit(double c){
+
+        return c\*9.0/5.0+32.0;
+
+    }
+
+    public static double fahrenheitToCelsius(double f){
+
+        return(f-32.0)\*5.0/9.0;
+
+    }
+
+    public static void main(String\[] args){
+
+        if (args.length>=2){
+
+            try{
+
+                double value=Double.parseDouble(args\[0]);
+
+                String unit=args\[1].toUpperCase();
+
+                if(unit.startsWith("C")){
+
+                    double f=celsiusToFahrenheit(value);
+
+                    System.out.printf("%.2f℃=%.2f℉%n",value,f);
+
+                }else if (unit.startsWith("F")){
+
+                    double c=fahrenheitToCelsius(value);
+
+                    System.out.printf("%.2f℉=%.2f℃%n",value,c);
+
+                }else {
+
+                    System.out.println("未知单位，请使用 C 或 F。");
+
+                }
+
+            }catch(Exception e){
+
+                System.out.println("命令行解析失败，请按示例输入，例如：java TemperatureConverter 36.6 C");
+
+            }
+
+        }else{
+
+            mainLogic();
+
+        }
+
+    }
+
+    public static void mainLogic(){
+
+        Scanner scanner=new Scanner(System.in);
+
+        System.out.print("请输入要转换的温度与单位（例如 36.6 C 或 97 F）:");
+
+        String s=scanner.nextLine().trim();
+
+        if (s.isEmpty()){
+
+            System.out.println("'输入为空，程序退出。");
+
+            return;
+
+        }
+
+        String\[] parts=s.split("\\\\s+");
+
+        try{
+
+            double value=Double.parseDouble(parts\[0]);
+
+            String unit=parts.length>1? parts\[1].toUpperCase():"C";
+
+            if (unit.startsWith("C")){
+
+                double f=celsiusToFahrenheit(value);
+
+                System.out.printf("%.2f℃=%.2f℉%n",value,f);
+
+            }else if(unit.startsWith("F")){
+
+                double c=fahrenheitToCelsius(value);
+
+                System.out.printf("%.2f℉=%.2f℃%n",value,c);
+
+            }else{
+
+                System.out.println("未知单位，请使用 C 或 F。");
+
+            }
+
+        }catch(Exception e){
+
+            System.out.println("输入解析失败，请按示例输入数值与单位，例如：36.6 C");
+
+        }finally{
+
+            scanner.close();
+
+        }
+
+    }
+
+}
+
+
+

w2/Java源码（2）.md

@@ -0,0 +1,60 @@
+**异常数据拦截与清洗流水线**
+
+public class DataCleaner {
+
+    public static void main(String\[] args) {
+
+        int\[] sensorData = {85, -5, 92, 0, 105, 999, 88, 76};
+
+        int validSum = 0;
+
+        int validCount = 0;
+
+        for (int data:sensorData){
+
+            if (data==999){
+
+                System.out.println("致命错误：传感器掉线，终止处理");
+
+                break;
+
+            }
+
+&#x20;           if(data>=1 \&\& data<=100){
+
+&#x20;               validSum +=data;
+
+&#x20;               validCount++;
+
+&#x20;           }
+
+&#x20;           else if (data<=0||(data>10 \&\& data!=999)){
+
+&#x20;               System.out.println("警告：发现越界数据 \["+data+"]，已跳过");
+
+&#x20;               continue;
+
+&#x20;           }
+
+&#x20;       }
+
+&#x20;       if(validCount>0){
+
+&#x20;           double average=(double) validSum/validCount;
+
+&#x20;           System.out.println("有效数据的平均值"+average);
+
+&#x20;       }else{
+
+&#x20;           System.out.println("无有效数据");
+
+&#x20;       }
+
+&#x20;   }
+
+}
+
+
+
+
+