How to create an String ArrayList in Java with a repeating pattern

Question

How can I create a String ArrayList with a repeated group of strings like

"A", "B", "C", "A", "B", "C", "A", "B", "C", "A", "B", "C", ......

In Python I use

list = deque(["A","B","C"]*288) # 288 times "A","B","C"

Answer 1

You could use an IntStream to create a range of 288 items, and then flatmap it to though three strings:

List<String> strings = IntStream.range(0, 288)
                                .boxed()
                                .flatMap(i -> Stream.of("A", "B", "C"))
                                .collect(Collectors.toList());

Answer 2

Without complicating things, Use a simple for loop:

ArrayList<String> alphabets = new ArrayList<String>();

for (int i=0; i<288; i++) {
    alphabets.add("A");
    alphabets.add("B");
    alphabets.add("C");
}