[C++/CPP] 16.02. STL iterator, 반복자

C++ 온라인 컴파일러 사이트

1. https://replit.com/~
2. https://www.onlinegdb.com/online_c++_compiler
3. https://cpp.sh/
4. https://www.tutorialspoint.com/compile_cpp_online.php

#include<iostream>
#include<vector>
#include<list>
#include<set>
#include<map>

using namespace std;

int main()
{
    vector<int> container;
    for (int i = 0; i < 10; ++i)
        container.push_back(i);
    
    {
        // vector<int>::iterator
        vector<int>::const_iterator itr;
        itr = container.begin();

        while (itr != container.end())
        {
            cout << *itr << " ";
            ++itr;
        }
        cout << endl;
    }

    {
        for (auto itr = container.begin(); itr != container.end(); ++itr)
        {
            cout << *itr << " ";
        }
        cout << endl;
        
    }

    {
        for(auto & e : container)
            cout << e << " ";
        cout << endl;
    }

    {
        list<int> container;
        for (int i = 0; i < 10; ++i)
            container.push_back(i);
        
        for (auto itr = container.begin(); itr != container.end(); ++itr)
            cout << *itr << " ";
        cout << endl;

        for(auto & e : container)
            cout << e << " ";
        cout << endl;
    }

    {
        set<int> container;
        for (int i = 0; i < 10; ++i)
            container.insert(i);
        
        for (auto itr = container.begin(); itr != container.end(); ++itr)
            cout << *itr << " ";
        cout << endl;

        for(auto & e : container)
            cout << e << " ";
        cout << endl;
    }

    {
        map<int, char> container;
        for (int i = 0; i < 10; ++i)
            container.insert(make_pair(i, char(i + 65)));
        
        for (auto itr = container.begin(); itr != container.end(); ++itr)
        {   
            cout << itr->first;
            cout << ":";
            cout << itr->second;
            cout << " ";
        }
        cout << endl;

        for(auto & e : container)
        {
            cout << e.first;
            cout << ":";
            cout << e.second;
            cout << " ";
        }
        cout << endl;
    }

    return 0;
}