public class TestList {
public static void main(String[] args) {
Set<Integer> set = new TreeSet<Integer>();
List<Integer> list1=new ArrayList<Integer>();
我固定了它.我的新代码//returns a new IntSet after subtracting a from b
// .minus().toString()
ArrayList minusArray = new ArrayList();
minusArray.addAll(array1);
for(int i =0; i< minusArray.size(); i++){
for(
