csharp 用逗号和“和”连接字符串列表

Posted 2021-05-12

private static string JoinArrayNicely (string[] items)
{
    if (items.Count() < 1)
    {
        return "";
    }
    else if (items.Count() == 1)
    {
        return items[0];
    }
    else if (items.Count() == 2)
    {
        return $"{items[0]} and {items[1]}";
    }
    else
    {
        var ret = String.Join(", ", items.Take(items.Count() - 1));
        return $"{ret}, and {items.Last()}";
    }
}