我正在研究一个项目（拼字游戏中的AI），并且试图从地图中检索单词。我需要比较“手”中是否有足够的字母来构建单词。比较之后，我想将该单词（可播放）添加到向量中。

void compareBotHand(std::vector<std::string> npcHand) //npcHand contains 7 random letters from the english alphabet
    {
        std::vector<std::string> botVec; //vector used to insert the playable words
        int matcher; //check if letters in "hand" and letters in word match
        std::map<std::string,int>::iterator it = fR_existing_words.begin();
        while (it != fR_existing_words.end())
        {
            std::string fWord = it->first;
            matcher = 0;
            for (int i = 0; i < fWord.length(); i++)
            {
                std::string s(1,fWord[i]); //convert char into string
                for (int j = 0; j < npcHand.size(); j++)
                {
                    if (npcHand[j] == fWord) //there are 1 letter words in the map
                    {
                        botVec.push_back(fWord);
                    }
                    else if (npcHand[j] == s)
                    {
                        matcher++;
                    }
                }
                if (matcher == fWord.length()) //if the number of letters in hand are the same has in word,they match
                {
                    botVec.push_back(fWord);
                }
            }
            it++;
        }
        std::cout << "Playable Words: " << std::endl;
        for (int c = 0; c < botVec.size(); c++)
        {
            std::cout << botVec[c] << std::endl;
        }
    }