Refactor the simple substitute to use the decrypt-by-table function.

src/cipher_analytical_machine/ciphers/simple_substitution.clj

@@ -29,11 +29,16 @@
   [char substitution-table]
   (get substitution-table char))
 
+(defn decrypt-by-table
+  "Decrypt a message by the substitution-table"
+  [substitution-table message]
+  (map (fn [char] (find-value-in-table char substitution-table)) message))
+
 (defn encrypt-message
   "Encrypt a message using the simple substitution cipher. The function is case-insensitive. If a symbol isn't in the symbols list, then it will be removed."
   [message substitution-table]
   (->> message
-       (map (fn [char] (find-value-in-table char substitution-table)))
+       (decrypt-by-table substitution-table)
        (remove nil?)
        (cs/join \,)))
 
@@ -44,11 +49,6 @@
       (caesar/encrypt-message key symbols)
       (encrypt-message substitution-table)))
 
-(defn decrypt-by-table
-  "Decrypt a message by the substitution-table"
-  [substitution-table message]
-  (map (fn [char] (find-value-in-table char substitution-table)) message))
-
 (defn decrypt-message-by-symbol-table
   "Decrypt a message using the simple substitution cipher. The function is case-insensitive. The substitution-table must be (symbols, symbols)."
   [substitution-table message]