public class DynamicSorter
    {
        public string Name, Rank;
        public int Year;

        public DynamicSorter(string name, string rank, int year = 1988)
        {
            Name = name;
            Rank = rank;
            Year = year;
        }

        public override string ToString()
        {
            return $"{Name}:{Rank}:{Year}";
        }

        /// <summary>
        /// This function satisfies: Make the sort dynamic per https://social.msdn.microsoft.com/Forums/vstudio/en-US/f66b4d1d-231a-4ed9-b009-bb89db450d4f/linq-with-dynamic-order-by-clause-c?forum=csharpgeneral and https://docs.microsoft.com/en-us/dotnet/api/system.linq.igrouping-2?view=netframework-4.8 and https://stackoverflow.com/questions/2728340/how-can-i-do-an-orderby-with-a-dynamic-string-parameter
        /// </summary>
        /// <param name="input"></param>
        /// <param name="firstSort"></param>
        /// <returns></returns>
        public static List<DynamicSorter> SorterFunction(List<DynamicSorter> input, string firstSort)
        {
            //TODO: Implement "thenBy"
            //TODO: Implement: var sortedItems = reverse ? items.OrderByDescending(orderByFunc) : items.OrderBy(orderByFunc)
            Func<DynamicSorter, Object> orderByFunc_First = null;
            switch (firstSort)
            {
                case "Rank":
                    orderByFunc_First = item => item.Rank;
                    break;
                case "Name":
                    orderByFunc_First = item => item.Name;
                    break;
                case "Year":
                    orderByFunc_First = item => item.Year;
                    break;
                default:
                    orderByFunc_First = item => null;
                    return input;
            }
            return input.OrderBy(orderByFunc_First).ToList();
        }

    }