本文共 500 字,大约阅读时间需要 1 分钟。
public class Demo05ArrayListTest2 {
public static void main(String[] args) {
ArrayList<Integer> biglist=new ArrayList<>(); Random r=new Random(); for (int i = 0; i < 20; i++) { int num=r.nextInt(20); biglist.add(num); } small(biglist); } public static ArrayList<Integer> small(ArrayList<Integer> list){ ArrayList<Integer> smalllist=new ArrayList<Integer>(); for (int i = 0; i < list.size(); i++) { if(list.get(i)%2==0) { smalllist.add(list.get(i)); } } System.out.println(smalllist); return list; } }转载地址:http://jbezi.baihongyu.com/