List倒叙分页

List倒叙分页

遇到一个需求,将list的数据进行分页,并且倒叙,记录一下

public static void main(String[] args) {
		int page=2;
		int perPage=3;
		String a="3,232,1,12,3";
		String[] split = a.split(",");
		List<String> asList = Arrays.asList(split);
		int size = asList.size();
		int from = size-(page*perPage);
		int to = size-(page*perPage)+perPage;
		System.out.println(from+"---"+to);
		if(to<0) {
			System.out.println("none");
			return;
		}
		List<String> subList = asList.subList(from<=0?0:from, to>=size?size:to);
		Collections.reverse(subList);
		System.out.println(subList);
	}