03. Characters in Range

using System;

namespace CharactersInRange
{
    class Program
    {
        static void Main(string[] args)
        {
            char ch1 = char.Parse(Console.ReadLine());
            char ch2 = char.Parse(Console.ReadLine());
            string result = "";

            Console.WriteLine(CharactersInRange(ch1, ch2, result));
        }

        private static string CharactersInRange(char ch1, char ch2, string result)
        {
            int small = 0;
            int big = 0;
            if (ch1 < ch2)
            {
                small = ch1;
                big = ch2;
            }
            else
            {
                small = ch2;
                big = ch1;
            }

            for (int i = small + 1; i < big; i++)
            {

                result += $"{(char)i} ";
            }
            return result;
        }
    }
}