https://leetcode.com/problems/isomorphic-strings/

isomorphic.cpp

#include <map>
using namespace std;

class Solution {
public:
    bool isIsomorphic(string s, string t) {
        map<char, char> convert;
        map<char, char> rconvert;
        for(int i=0; i<s.length(); i++){
            if(convert.find(s[i])==convert.end() && rconvert.find(t[i])==rconvert.end() ){
                convert[s[i]] = t[i];
                rconvert[t[i]] = s[i];
            }else if(convert[s[i]] != t[i]){
                return false;
            }
        }
        return true;
    }
    
};