摘要:
import java.util.*; public class map { public static void main( String[] args ) { //Map list = new HashMap(); Map<Integer, String> map = new HashMap<> 阅读全文
摘要:
import java.util.HashSet; import java.util.Iterator; import java.util.Set; public class set { public static void main( String[] args ) { Set list = ne 阅读全文