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    "https://leetcode.com/problems/group-anagrams\n",
    "\n",
    "\n",
    "Runtime: 52 ms, faster than 57.23% of C++ online submissions for Group Anagrams.\n",
    "Memory Usage: 22.8 MB, less than 23.94% of C++ online submissions for Group Anagrams.\n",
    "\n",
    "\n",
    "```cpp\n",
    "#include <vector>\n",
    "#include <algorithm>\n",
    "#include <string>\n",
    "#include <map>\n",
    "#include <vector>\n",
    "\n",
    "using namespace std;\n",
    "\n",
    "class Solution\n",
    "{\n",
    "public:\n",
    "    vector<vector<string>> groupAnagrams(vector<string> &strs)\n",
    "    {\n",
    "        //8:21\n",
    "        map<string, vector<string>> d;\n",
    "        for (const auto &s : strs)\n",
    "        {\n",
    "            vector<char> s_l;\n",
    "            for (const auto &c : s)\n",
    "            {\n",
    "                s_l.push_back(c);\n",
    "            }\n",
    "            sort(s_l.begin(), s_l.end());\n",
    "            string r = \"\";\n",
    "            for (const auto c : s_l)\n",
    "            {\n",
    "                r += c;\n",
    "            }\n",
    "            d[r].push_back(s);\n",
    "        }\n",
    "\n",
    "        vector<vector<string>> results;\n",
    "        for (auto const &imap : d)\n",
    "            results.push_back(imap.second);\n",
    "        return results;\n",
    "        //8:28\n",
    "    }\n",
    "};\n",
    "```"
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