krack, C++ (gcc) - rextester

krack

#include <bits/stdc++.h>
using namespace std;
void printstack(stack<string> s){
    if (s.empty())
        return;
     string x = s.top();
     s.pop();
     cout << x << " ";
     printstack(s);
     s.push(x);
}
stack<string> reverse(stack<string> q){
    stack<string> e;
    while(!q.empty()){
    e.push(q.top());
    q.pop();
    }
    cout<<"\n";
    //printstack(q);
    return e;
}
string crack(string s){
    stack<string> rs;
    stack<string> res;
    string temp;
    string r;
    int l=s.length() ;
    
    for(int i=0;i<l;i++){
         temp.clear();
        while(s[i]!='.'){
           temp=temp+s[i];
            i++;
        }
        rs.push(temp+" ");
        //cout<<temp<<" ";
        if(s[i]=='.' && s[i+1] == '.'){
            if(!rs.empty()){
            rs.pop();
            i++;
            }
        }
        else if(s[i]=='.'){
            continue;
        }
       
    }
    while(!rs.empty()){
    r = rs.top() + r +"  ";
    rs.pop();
    }
    return r;
}
int main()
{    string str;
     string qe;
     string fresult;
     cin>>str;
     qe=crack(str);
     //cout<<result<<" ";
     //fresult = decode(result);
     //cout<<fresult;
    vector<char> s1{'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
    vector<char> s2{'z','y','x','w','v','u','t','s','r','q','p','o','n','m','l','k','j','i','h','g','f','e','d','c','b','a'};
    //s1={'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
    //s2={'z','y','x','w','v','u','t','s','r','q','p','o','n','m','l','k','j','i','h','g','f','e','d','c','b','a'};
    string dec;
    int l =qe.length();
    int ind;
    for(int i=0;i<l;i++){
        if(qe[i] == ' '){
        dec= dec+" ";
        }
        else{
            auto it = find(s1.begin(),s1.end(),qe[i]);
                if(it != s1.end()){
                ind = it - s1.begin();
                }
                dec= dec+s2[ind];
        }
    }
     cout<<dec;
     return 0;
}


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