注意因?yàn)橐笞钚〉?所以如果碰到了比現(xiàn)有的要小的時(shí)候 我們要清空該List

class Solution {
    public String[] findRestaurant(String[] list1, String[] list2) {
        HashMap<String,Integer> map = new HashMap<>();
        ArrayList<String> result = new ArrayList<>();
        int min_sum = Integer.MAX_VALUE ;
        for(int i = 0 ;i<list1.length;i++)
        {
            map.put(list1[i],i);
        }
        for(int i = 0 ;i<list2.length;i++)
        {
            if(map.containsKey(list2[i]))
            {
                int index = map.get(list2[i]);
                if(index+i<min_sum)
                {
                    result.clear();
                    result.add(list2[i]);
                    min_sum=index+i;
                }
                else if (index+i==min_sum)
                {
                     result.add(list2[i]);
                }
                else
                    continue;
            }
        }
        String[] A = new String[result.size()];
        return result.toArray(A);
        
    }
}