leetcode 49. Group Anagrams 哈希
Medium
3641
187
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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) {
vector<vector<string>> res;
int n=strs.size();
unordered_map<string, vector<string>> mp;
for(int i=0;i<n;i++){
string t=strs[i];
sort(t.begin(), t.end());
mp[t].push_back(strs[i]);
}
for(auto &s:mp)
res.push_back(s.second);
return res;
}
};