Eric Lippert's challenge “comma-quibbling”, best answer?

Question

I wanted to bring this challenge to the attention of the stackoverflow community. The original problem and answers are here. BTW, if you did not follow it before, you should

Answer 1

In .NET Core we can leverage SkipLast and TakeLast.

public static string CommaQuibblify(IEnumerable items)
{
    var head = string.Join(", ", items.SkipLast(2).Append(""));
    var tail = string.Join(" and ", items.TakeLast(2));
    return '{' + head + tail + '}';
}

https://dotnetfiddle.net/X58qvZ