using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Test
{
    public class Test
    {
        public delegate Tuple<int, int> func(char[] c, int i);
        public Dictionary<char, Delegate> func;

        public Test()
        {
            func = new Dictionary<char, Delegate>();
            func['l'] = new func(list);
            //func['d'] =
        }

        public Tuple<int[], int> list(char[] x, int f)
        {
            List<int> r = new List<int>();
            f = f+1;
            while (x[f] != 'e')
            {
                int v = f = func[x[f]](x, f); //ここでメソッド名が必要ですと言われる
                r.Add(v);
            }
            return Tuple.Create<int[], int>(r.ToArray<int>(), f + 1);
        }
    }
}