tracks/java/exercises/atbash-cipher/src/example/java/Atbash.java in trackler-2.0.8.47 vs tracks/java/exercises/atbash-cipher/src/example/java/Atbash.java in trackler-2.0.8.48

@@ -5,33 +5,33 @@
 
     private static final int GROUP_SIZE = 5;
     private static final String PLAIN = "abcdefghijklmnopqrstuvwxyz";
     private static final String CIPHER = "zyxwvutsrqponmlkjihgfedcba";
 
-    public static String encode(String input) {
+    public String encode(String input) {
         String encoded = stripInvalidCharacters(input).toLowerCase();
         String cyphered = "";
 
         for (char c : encoded.toCharArray()) {
             cyphered += applyCipher(c);
         }
 
         return splitIntoFiveLetterWords(cyphered);
     }
 
-    public static String decode(String input) {
+    public String decode(String input) {
         String encoded = stripInvalidCharacters(input).toLowerCase();
         String deciphered = "";
 
         for (char c : encoded.toCharArray()) {
             deciphered += applyCipher(c);
         }
 
         return deciphered;
     }
 
-    private static String stripInvalidCharacters(String input) {
+    private String stripInvalidCharacters(String input) {
         String filteredValue = "";
 
         for (char c : input.toCharArray()) {
             if (Character.isLetterOrDigit(c)) {
                 filteredValue += c;
@@ -39,16 +39,16 @@
         }
 
         return filteredValue;
     }
 
-    private static char applyCipher(char input) {
+    private char applyCipher(char input) {
         int idx = PLAIN.indexOf(input);
 
         return idx >= 0 ? CIPHER.toCharArray()[idx] : input;
     }
 
-    private static String splitIntoFiveLetterWords(String value) {
+    private String splitIntoFiveLetterWords(String value) {
         List<String> words = new ArrayList<>();
 
         for (int i = 0; i < value.length(); i += GROUP_SIZE) {
             words.add(i + GROUP_SIZE <= value.length() ? value.substring(i, i + GROUP_SIZE) : value.substring(i));
         }