public void Leave(string login)
{
if (!IsTakenPart(login))
{
throw new InvalidOperationException(string.Format("{0} is not taking part in this competition", login));
}
Competitors.RemoveAll(c => c.Login == login);
}
public string SelectNewLeader()
{
if (Competitors.Count < 2)
{
throw new InvalidOperationException("Selecting a new leader is not possible when Competition has less than 2 competitors");
}
Competitors.RemoveAll(c => c.Login == Leader);
string newLeader = Competitors.Select(c => c.Login).First();
Leader = newLeader;
Name = newLeader;
return(newLeader);
}
