package BasicAndDontKnow; import java.util.ArrayList; import java.util.List; public class Test11 { public static void main(String[] args) { List list=new ArrayList(); for(int i=0;i1){ int index=(count-1)%size; if(list.indexOf(index)%3==0){ list.remove(index); System.out.print(list.indexOf(index)+" "); } count++; } System.out.println(list.toString()); } }