added old projects

CS101/lab_16/.vscode/settings.json

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+{
+    "java.project.sourcePaths": ["src"],
+    "java.project.outputPath": "bin"
+}

CS101/lab_16/README.md

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+## Getting Started
+
+Welcome to the VS Code Java world. Here is a guideline to help you get started to write Java code in Visual Studio Code.
+
+## Folder Structure
+
+The workspace contains two folders by default, where:
+
+- `src`: the folder to maintain sources
+- `lib`: the folder to maintain dependencies
+
+Meanwhile, the compiled output files will be generated in the `bin` folder by default.
+
+> If you want to customize the folder structure, open `.vscode/settings.json` and update the related settings there.
+
+## Dependency Management
+
+The `JAVA PROJECTS` view allows you to manage your dependencies. More details can be found [here](https://github.com/microsoft/vscode-java-dependency#manage-dependencies).

CS101/lab_16/src/Aray.java

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+import java.lang.reflect.Array;
+import java.util.Random;
+
+public class Aray {
+    //Returns the indexof the minimum value in the array.
+    public static int findMin(int[] a) {
+        int min = 101;
+        int length = a.length;
+        int index = 0;
+        for (int i = 0; i < length; ++i) {
+            if (a[i] < min)
+                min = a[i];
+                index = i;
+        }
+        return index;
+    }
+
+    //Returns the indexof the maximum value in the array.
+    public static int findMax(int[] a) {
+        int max = 0;
+        int length = a.length;
+        int index = 0;
+        for (int i = 0; i < length; ++i) {
+            if (a[i] > max)
+                max = a[i];
+                index = i;
+        }
+        return index;
+    }
+
+    //Returns the statistical mean of the values in the array.
+    public static double mean (int[] a) {
+        int sum = 0;
+        int length = a.length;
+        for (int i = 0; i < length; ++i) {
+            sum += a[i];
+        }
+        return sum / length;
+    }
+
+    //Populates the array with a series of integer values between 0 and 100 (inclusive) that are randomly generated. 
+    public static void populate(int[] a) {
+        Random rnd = new Random();
+        for (int i = 0; i < 100; ++i) {
+            a[i] = rnd.nextInt(0, 101);
+        }
+    }
+}

CS101/lab_16/src/Tester.java

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+public class Tester {
+    public static void main(String[] args) throws Exception {
+        //data_type name = new data_type ;
+        int[] a = new int[100] ;
+        Aray.populate(a);
+        System.out.println("Max: " + Aray.findMax(a));
+        System.out.println("Min: " + Aray.findMin(a));
+        System.out.println("Mean: " + Aray.mean(a));
+    }
+}