Adding early CS challenge solutions

CS5 - Challenge Solution/Main.java

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+import java.util.Random;
+import java.util.Scanner;
+
+public class Main {
+    public static void main(String[] args) {
+        Random random = new Random();
+        Scanner scan = new Scanner(System.in);
+
+        System.out.print("Number of random values to create: ");
+        int numberToRandomize = scan.nextInt();
+
+        scan.close();
+
+        double sum = 0;
+
+        for(int i = 0; i < numberToRandomize; i++) {
+            double randomNumber = random.nextDouble();
+
+            System.out.println("Random Number " + (i + 1) + ": " + randomNumber);
+
+            sum += randomNumber;
+        }
+
+        System.out.println("Sum = " + sum);
+        System.out.println("Average = " + (sum / numberToRandomize));
+    }
+}