directory structure change, organize by class number as opposed to mod number

Signed-off-by: Amrit Panesar <apanesar@4195tech.com>

COM107/classwork/Iterate6897.java

@@ -0,0 +1,33 @@
+import javax.swing.*;
+
+public class Iterate6897
+{
+    public static void main(String[] args) //main
+    {
+        String input = JOptionPane.showInputDialog("Please enter a large number.");
+        //System.out.println("Input Length = "+input.length());
+        String sOut ="";
+        int i = input.length();
+        try
+        {
+            Long.parseLong(input);
+        }
+        catch (Exception e)
+        {
+            JOptionPane.showMessageDialog(null, "Your input \""+input+"\" was invalid."
+            , "Fatal Error", JOptionPane.ERROR_MESSAGE);
+            System.exit(1);
+        }
+        
+        while (i > 0)
+        {
+            char cBuf = input.charAt(i-1);
+            sOut += "" + cBuf;
+            //System.out.println(i + " - " + cBuf + " - " + sOut);
+            i--;
+        }
+        JOptionPane.showMessageDialog(null, "The digits reversed is: "
+                +sOut, "Results", JOptionPane.INFORMATION_MESSAGE);
+        System.exit(0);
+    }
+}