Code fix

Cipher.java

@@ -5,7 +5,7 @@ public class Cipher
     // encryption involves mapping from original to cipher, for each letter we locate the character in the
     // original string and replace it with the cipher alphabet letter at the same position
     public static final String ORIGINAL_ALPHABET = "abcdefghijklmnopqrstuvwxyz";
-    public static final String CIPHER_ALPHABET = "dfxyhrklvwuasgimnojpqetbcz";
+    public static final String   CIPHER_ALPHABET = "dfxyhrklvwuasgimnojpqetbcz";
 
     public String encrypt(String inputString) {
 
@@ -15,19 +15,24 @@ public String encrypt(String inputString) {
         // for all chars in the input string
         for (int i = 0; i < inputString.length(); i++)   
         {
-
+            // append the encrypted version of the char to the output string
+            outputString += replaceChar(inputString.charAt(i), true);
         }
 
         return outputString;
     }
 
     public String decrypt(String inputString) {
 
-        // output string will be collected in this variable, one char at a time
         String outputString = "";
 
-        replaceChar('a',true);
-
+
+        for (int i = 0; i < inputString.length(); i++)   
+        {
+
+            outputString += replaceChar(inputString.charAt(i), false);
+        }
+
         return outputString;
     }
 
@@ -42,7 +47,7 @@ private char replaceChar(char inputChar, boolean isEncrypt) {
             for (int i = 0; i < ORIGINAL_ALPHABET.length(); i++)   
             {
                 if(ORIGINAL_ALPHABET.charAt(i) == inputChar) {
-
+                    return CIPHER_ALPHABET.charAt(i);
                 }
             }
         }
@@ -58,4 +63,4 @@ private char replaceChar(char inputChar, boolean isEncrypt) {
         // if we did not find it in the alphabet, then return the original char
         return inputChar;
     }
-}   
+}