以下这段for嵌套循环怎么用java8 lambda写？

Question

ArrayList<String> messages = new ArrayList<String>(); String dot; for(int i=0;i<10;i++){ dot = ""; for(int j=0;j<=i;j++) { dot = dot + "."; } messages.add("message" + dot); }

Answer 1

    public static void main(String[] args) {
        final String message = "message";
        List<String> messages = IntStream.range(1, 11).mapToObj(i -> {
            char[] chars = new char[i];
            Arrays.fill(chars, '.');
            return message + String.valueOf(chars);
        }).collect(Collectors.toList());
        System.out.println(message);
    }