czarekPedał

public boolean isEasy(String X) {
        boolean easy = false;
        ArrayList<String> list = new ArrayList<>();         //ababx
        for (int i = 0, j = 0; i < X.length(); i++) {
            easy = false;
            if (list.isEmpty()) {
                list.add(String.valueOf(X.charAt(i)));
            } else if (String.valueOf(X.charAt(i)).equals(list.get(0))) {
                j = i;
                for (int k = 1; k < list.size() && j < X.length(); k++, j++) {
                    if (!list.get(k).equals(String.valueOf(X.charAt(j)))) {
                        easy = true;
                        break;
                    }
                }
            } else if (!String.valueOf(X.charAt(i)).equals(list.get(0))) {
                list.add(String.valueOf(X.charAt(i)));
            }
            if (easy) {
                break;
            }
        }
        return easy;
    }