共享姓氏如何实现呢

package zh.codegym.task.task08.task0821; import java.util.HashMap; import java.util.Map; /* 共享的姓氏和名字 */ public class Solution { public static void main(String[] args) { Map<String, String> map = createPeopleMap(); printPeopleMap(map); } public static Map<String, String> createPeopleMap() { //在此编写你的代码 HashMap<String,String> map= new HashMap<String,String>(); map.put("1","2"); map.put("2","2"); map.put("3","2"); map.put("4","2"); map.put("1","2"); map.put("6","2"); map.put("7","2"); map.put("8","2"); map.put("9","2"); map.put("10","2"); return map; } public static void printPeopleMap(Map<String, String> map) { for (Map.Entry<String, String> s : map.entrySet()) { System.out.println(s.getKey() + " " + s.getValue()); } } }

HashMap<String,ArrayList<String>> map= new HashMap<String,ArrayList<String>>(); //String[] Array=new String[]{"白","元芳","靖","鸿章"}; ArrayList<String> list=new ArrayList<String>(); ArrayList<String> list1=new ArrayList<String>(); list.add("白"); list.add("元芳"); list.add("靖"); list1.add("赵"); for(Map.Entry<String,ArrayList<String>>entry: map.entrySet()) { for(int i=0;i<list.size();i++) { System.out.println(entry.getKey()+list.get(i)); } } 不知道这样行不行！

也想知道这个问题？