Method getTurn

app/src/main/java/scrambler/Clock.java:207–217

(String s)

    }

    private int getTurn(String s) {
        StringBuilder sb = new StringBuilder();
        for (int i=0; i<s.length(); i++) {
            char c = s.charAt(i);
            if (Character.isDigit(c)) sb.append(c);
        }
        int turn = Integer.parseInt(sb.toString());
        if (s.endsWith("-")) return -turn;
        if (s.endsWith("+")) return turn;
        return 0;
    }
}