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

namespace dictionary_vs_switch
{
    class Program
    {
        static void Main()
        {
            char[] fromArr = Enumerable.Range('a', 'z' - 'a' + 1).Select(i => (char)i).ToArray();
            char[] iterArr = new char[10000];
            Random r = new Random();
            for (int i = 0; i < iterArr.Length; i++)
            {
                iterArr[i] = fromArr[r.Next(fromArr.Length)];
            }
            var result1 = new StringBuilder(iterArr.Length);
            var result2 = new StringBuilder(iterArr.Length);
            Stopwatch s1 = new Stopwatch();
            Stopwatch s2 = new Stopwatch();

            s1.Start();

            Dictionary<char, char> d = new Dictionary<char, char>
                {
                    {'a', 'а'},
                    {'b', 'б'},
                    {'c', 'ц'},
                    {'d', 'д'},
                    {'e', 'е'},
                    {'f', 'ф'},
                    {'g', 'г'},
                    {'h', 'ш'},
                    {'i', 'и'},
                    {'j', 'й'},
                    {'k', 'к'},
                    {'l', 'л'},
                    {'m', 'м'},
                    {'n', 'н'},
                    {'o', 'о'},
                    {'p', 'п'},
                    {'q', 'ы'},
                    {'r', 'р'},
                    {'s', 'с'},
                    {'t', 'т'},
                    {'u', 'у'},
                    {'v', 'в'},
                    {'w', 'ю'},
                    {'x', 'ч'},
                    {'y', 'я'},
                    {'z', 'з'}
                };
            foreach (char c in iterArr)
            {
                result1.Append(d[c]);
            }
            s1.Stop();
            s2.Start();
            foreach (char c in iterArr)
            {
                result2.Append(getChar(c));
            }
            s2.Stop();
            Console.WriteLine("dictionary: " + s1.ElapsedTicks);
            Console.WriteLine("switch:     " + s2.ElapsedTicks);
            Console.ReadKey();

        }

        private static char getChar(char c)
        {
            switch (c)
            {
                case 'a': return 'а';
                case 'b': return 'б';
                case 'c': return 'ц';
                case 'd': return 'д';
                case 'e': return 'е';
                case 'f': return 'ф';
                case 'g': return 'г';
                case 'h': return 'ш';
                case 'i': return 'и';
                case 'j': return 'й';
                case 'k': return 'к';
                case 'l': return 'л';
                case 'm': return 'м';
                case 'n': return 'н';
                case 'o': return 'о';
                case 'p': return 'п';
                case 'q': return 'ы';
                case 'r': return 'р';
                case 's': return 'с';
                case 't': return 'т';
                case 'u': return 'у';
                case 'v': return 'в';
                case 'w': return 'ю';
                case 'x': return 'ч';
                case 'y': return 'я';
                case 'z': return 'з';
                default: return ' ';
            }
            
        }
    }
}