feat(4.2.2): Finish U4_L2_Activity_One

src/main/java/Unit4/U4_L2_Activity_Two.java

@@ -0,0 +1,23 @@
+package Unit4;
+
+import java.util.Scanner;
+
+public class U4_L2_Activity_Two {
+    public static void main(String[] args){
+        Scanner scanner = new Scanner(System.in);
+
+        System.out.println("Enter a positive integer:");
+        System.out.print("> ");
+        int num = scanner.nextInt();
+
+        int index=0;
+        while(num>0){
+            System.out.println((num%10)* (int) Math.pow(10, index));
+            index++;
+            num/=10;
+        }
+
+        scanner.close();
+
+    }
+}