My 6th solution
Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time 
# Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\nO(N)\n\n- Space complexity:\nO(N)  using extra string\n\n# Code\n```\nclass Solution {\npublic:\n    bool isAcronym(vector<string>& words, string s) {\n        string res = "";\n        for(auto word: words){\n            res += word[0];\n        }\n        if(res == s)\n        return true;\n        else\n        return false;\n    }\n};\n```
['C++']