multimap-rebgin

////////////////////////////////////////
//      2018/05/04 21:39:45
//      multimap-rebgin

// returns a reverse iterator to the end of the multimap
#include <iostream>
#include <map>
#include <iomanip>
#include <string>

using namespace std;

template<class T>
class ID{
private:
    T id, name;
public:
    ID(T t, T n):id(t), name(n){}
    void print(){
        cout.setf(ios::left);
        cout << setw(15) << name << " " << id << endl;
        cout.unsetf(ios::left);
    }
};

//=========================

int main(){
    typedef ID<string> ld;
    typedef multimap<int, ld> M;
    typedef M::value_type v_t;

    M m;
    m.insert(v_t(1,ld("000123","Shevchenko")));
    m.insert(v_t(2,ld("000124","Pushkin")));
    m.insert(v_t(3,ld("000125","Shakespeare")));

    // same key
    m.insert(v_t(3,ld("000126","Smith")));

    M::reverse_iterator it = m.rbegin();
    while (it != m.rend()){
        cout.setf(ios::left);
        cout << setw(3) << it->first;
        it->second.print();
        it++;
    }

    return 0;
}

/*
OUTPUT:
    3  Smith           000126
    3  Shakespeare     000125
    2  Pushkin         000124
    1  Shevchenko      000123
*/