链接:https://leetcode.com/problems/group-anagrams/description/
Given an array of strings, group anagrams together.
Example:
Input: ["eat", "tea", "tan", "ate", "nat", "bat"]
,
Output:
[
["ate","eat","tea"],
["nat","tan"],
["bat"]
]
Note:
- All inputs will be in lowercase.
- The order of your output does not matter.
class Solution {
public:
vector<vector<string>> groupAnagrams(vector<string>& strs) {
unordered_map<string,multiset<string>> mp;
for(string s:strs)
{
string t=s;
sort(t.begin(),t.end());
mp[t].insert(s);
}
vector<vector<string>> anagrams;
for(auto m:mp)
{
vector<string> anagram(m.second.begin(),m.second.end());
anagrams.push_back(anagram);
}
return anagrams;
}
};