Question

I have a class that contains player numbers…

public class Game {
    public int blackPlayer { get; set; }
    public int whitePlayer { get; set; }
}

and a…

List<Game> games;

I want to know which player number occurs the most in the list (regardless if they played as black or white). Does anyone know a good LINQ expression this?

Answer 1

The following should accomplish your goal:

var q = (from g in games
        from p in new[] {g.blackPlayer, g.whitePlayer}
        group p by p into pgroup
        orderby pgroup.Count() descending
        select new { Player = pgroup.Key,  Count =  pgroup.Count() }).FirstOrDefault();


Console.WriteLine("Player # {0} played {1} times which is the most", q.Player,  q.Count);