假设Andy和Doris想在晚餐时选择一家餐厅,并且他们都有一个表示最喜爱餐厅的列表,每个餐厅的名字用字符串表示。

你需要帮助他们用最少的索引和找出他们共同喜爱的餐厅。 如果答案不止一个,则输出所有答案并且不考虑顺序。 你可以假设总是存在一个答案。

示例 1:

输入: ["Shogun", "Tapioca Express", "Burger King", "KFC"] ["Piatti", "The Grill at Torrey Pines", "Hungry Hunter Steakhouse", "Shogun"] 输出: ["Shogun"] 解释: 他们唯一共同喜爱的餐厅是“Shogun”。

示例 2:

输入: ["Shogun", "Tapioca Express", "Burger King", "KFC"] ["KFC", "Shogun", "Burger King"] 输出: ["Shogun"] 解释: 他们共同喜爱且具有最小索引和的餐厅是“Shogun”,它有最小的索引和1(0+1)。

提示:

  1. 两个列表的长度范围都在 [1, 1000]内。
  2. 两个列表中的字符串的长度将在[1,30]的范围内。
  3. 下标从0开始,到列表的长度减1。
  4. 两个列表都没有重复的元素。

把 ‘=’ 写成了 ‘==’

class Solution {
public:
vector<string> findRestaurant(vector<string>& list1, vector<string>& list2) {
map<string, int> hax;
int len1 = list1.size();
int len2 = list2.size();
for(int i = 0; i < len1; i++)
{
hax[list1[i]] = i + 1;
}
vector<string> res;
int MIN = INT_MAX;
for(int i = 0; i < len2; i++)
{
if(hax[list2[i]] > 0 && i + hax[list2[i]] - 1 < MIN)
{
res.clear();
MIN = i + hax[list2[i]] - 1;
}
if(hax[list2[i]] > 0 && i + hax[list2[i]] - 1 == MIN)
{
res.push_back(list2[i]);
}
}
return res;
}
};

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