49. 字母异位词分组

test002.cpp

@@ -0,0 +1,16 @@
+class Solution {
+public:
+    vector<vector<string>> groupAnagrams(vector<string>& strs) {
+        unordered_map<string, vector<string>> data;
+        for(const auto &s : strs){
+            auto key = s;
+            sort(key.begin(), key.end());
+            data[key].push_back(s);
+        }
+        vector<vector<string>> ret;
+        for(const auto &line : data){
+            ret.push_back(line.second);
+        }
+        return ret;
+    }
+};