Sorting a list

#include <iostream>
#include <list>
#include <string>
#include <algorithm>
struct Player
{
    int id;
    std::string name;
    Player(int playerId, std::string playerName) :
            id(playerId), name(playerName)
    {
    }
    bool operator <(const Player & playerObj) const
    {
        return id < playerObj.id;
    }
};
struct PlayerComparator
{
    // Compare 2 Player objects using name
    bool operator ()(const Player & player1, const Player & player2)
    {
        if(player1.name == player2.name)
            return player1 < player2;
        return player1.name < player2.name;
    }
};
int main()
{
    std::list<Player> listofPlayers = { Player(22, "Sid"),
                                        Player(3, "Laura"),
                                        Player(43, "Riti"),
                                        Player(30, "Angel"),
                                        Player(2, "Laura"),};
    std::cout<<"****Playes in the list Initially ****"<<std::endl;
    for(Player & player : listofPlayers)
        std::cout<<player.id<< " :: "<<player.name<<std::endl;
    // Sort List by default criteria i.e < operator of Player
    listofPlayers.sort();
    std::cout<<"****After Sorting By ID ****"<<std::endl;
    for(Player & player : listofPlayers)
        std::cout<<player.id<< " :: "<<player.name<<std::endl;
    std::cout<<"****After Sorting By Name ****"<<std::endl;
    // Sorting List using Lambda function as comparator
    listofPlayers.sort([](const Player & player1, const Player & player2)
            {
                if(player1.name == player2.name)
                    return player1 < player2;
                return player1.name < player2.name;
            });
    for(Player & player : listofPlayers)
        std::cout<<player.id<< " :: "<<player.name<<std::endl;
    std::cout<<"****After Sorting By Name ****"<<std::endl;
    // Sorting List using Function Objects as comparator
    listofPlayers.sort(PlayerComparator());
    for(Player & player : listofPlayers)
        std::cout<<player.id<< " :: "<<player.name<<std::endl;
    return 0;
}

Built With

• c++