java 收藏についてTreeSetSample

Posted 2021-05-08

class TreeSetSample {
	public static void main(String[] args) {
		Set<Integer> tree = new TreeSet<Integer>();
		for (int i = 10; i <= 30; i++) {
			if (i % 3 == 0) {
				tree.add(i);
			}
		}
		tree = ((TreeSet<Integer>) tree).subSet(12, true, 21, false);
		tree.add(17);
		for (int i : tree) {
			System.out.print(i + " ");
		}
	}
}