HackerRank Sorting 3.Comparator

題目連結：Sorting: Comparator | HackerRank

比較函式的撰寫

struct Player {
    int score;
    string name;
};

class Checker{
public:
    static int comparator(Player a, Player b)  {
        if(a.score!=b.score) return a.score>b.score?0:-1;
        return a.name<b.name?0:-1;
    }
};