using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Collections;


namespace Length
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] fileNameLengths = new int[255];
            Recurse(ref fileNameLengths, new DirectoryInfo("C:\\"));

            TextWriter writer = new StreamWriter("C:\\lengths.csv");
            writer.WriteLine("Length, Count");
            for (int i = 0; i < fileNameLengths.Length; i++)
                writer.WriteLine("{0}, {1}", new Object[] { i, fileNameLengths[i] });
            writer.Close();

            //AlphaNumbers();
            //Console.ReadLine();
        }

        private static void AlphaNumbers()
        {
            TextReader reader = new StreamReader("C:\\english.txt");
            String sz;

            Dictionary<char, int> table = new Dictionary<char, int>();

            while ((sz = reader.ReadLine()) != null)
            {
                char starting = sz.ToUpperInvariant().ToCharArray()[0];
                int temp;
                if (table.TryGetValue(starting, out temp))
                {
                    temp++;
                    table[starting] = temp;
                }else{
                    table.Add(starting, 1);
                }
            }

            TextWriter write = new StreamWriter("C:\\list.txt");
            foreach (KeyValuePair<char, int> zam in table)
            {
               write.WriteLine("{0}: {1}", new object[] { zam.Key, zam.Value });
            }
            write.Close();
        }

        private static void Recurse(ref int[] numbers, DirectoryInfo directory)
        {
            try
            {
                foreach (FileInfo file in directory.GetFiles())
                {
                    if (file.Name.Length < numbers.Length)
                        numbers[file.Name.Length]++;
                    else
                        numbers[numbers.Length - 1]++;
                }
            }
            catch { return; }

            foreach (DirectoryInfo subDirectory in directory.GetDirectories())
            {
                Recurse(ref numbers, subDirectory);
            }
        }

    }
}