public bool Equals(Combination other)
{
if (ReferenceEquals(null, other)) return false;
if (ReferenceEquals(this, other)) return true;
return (GetHashCode() == other.GetHashCode() &&
values.All(i => values.Count(i1 => i==i1) == other.values.Count(i2 => i2==i)));
}
public Combination(Combination combination,int newValue)
{
var ints = new List<int>(combination.values) {newValue};
values = ints;
}