Leetcode-Solutions/isomorphic_strings.cpp at master · cpj2195/Leetcode-Solutions · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
#include"essentials.cpp"

bool isIsomorphic(string s, string t) {
        map<char,set<char> >mp1;
        if(s.length()!=t.length()){
            return false;
        }

        for(int i=0;i<s.length();i++){
            {
                mp1[s[i]].insert(t[i]);
            }
        }

        // for(auto it:mp1){
        //     cout<<it.first<<endl;
        //     for(auto it1:it.second){
        //         cout<<it1<<endl;
        //     }
        // }
        bool flag =true;
        bool flag1 =true;

            for(auto it:mp1){

                if(it.second.size()!=1){
                    flag=false;
                }
            }

       if(flag==false){
           return false;
       }
        else{

            for(auto it=mp1.begin();it!=prev(mp1.end());it++){
                // cout<<it->second[0]<<endl;
                set<char>set1=it->second;
                for(auto it1=next(it);it1!=mp1.end();it1++){
                    set<char>set2=it1->second;
                    if(set1==set2){
                        flag1=false;
                    }
                }
            }

            }


        return (flag && flag1);
    }

int main(){

string s="ab";
string t="aa";
cout<<isIsomorphic(s,t)<<endl;
return 1;

}