将list分割成指定大小的子list

public static void main(String[] args) {
        List<Integer> integers = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 6, 5, 4, 7, 8, 5, 2, 14, 56);

        List<List<Integer>> chopped = chopped(integers, 5);

        for (List<Integer> integerList : chopped) {
            System.out.println(integerList);
        }

    }

    // chops a list into non-view sublists of length L
    static <T> List<List<T>> chopped(List<T> list, final int L) {
        List<List<T>> parts = new ArrayList<>();
        final int N = list.size();
        for (int i = 0; i < N; i += L) {
            parts.add(new ArrayList<>(
                    list.subList(i, Math.min(N, i + L)))
            );
        }
        return parts;
    }

输出结果：
[1, 2, 3, 4, 5]
[6, 7, 8, 9, 6]
[5, 4, 7, 8, 5]
[2, 14, 56]