# 简单题，直接对输入做一个变换就可以

class Solution {
public:string change_word_format(string word){string result = "";map<char, string> s;int index = 0;for(int i=0;i<word.length();i++){if(s.find(word[i])==s.end()){s[word[i]]=to_string(index);index ++;}result += s[word[i]];}return result;     }vector<string> findAndReplacePattern(vector<string>& words, string pattern) {vector<string> converted_words;for(int i=0;i<words.size();i++)converted_words.push_back(change_word_format(words[i]));string converted_pattern = change_word_format(pattern);// compare and storevector<string> results;for(int i=0;i<converted_words.size();i++){if(converted_pattern==converted_words[i])results.push_back(words[i]);}return results;}
};