BitCounter

gistfile1.cs

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

namespace ConsoleTestApp
{
	class Program
	{
		private static Dictionary<int, Decimal> m_count = new Dictionary<int, Decimal>();

		private static void Main( string[] args )
		{
			m_count[0] = 0;
			m_count[1] = 0;
			byte[] buffer = new byte[1024];
			int readLen;

			var files = Directory.GetFiles( Environment.CurrentDirectory );
			foreach( var f in files )
			{
				using( FileStream fs = new FileStream( f, FileMode.Open, FileAccess.Read ) )
				{
					while ( (readLen = fs.Read( buffer, 0, buffer.Length )) > 0 )
					{
						for ( int i = 0; i < readLen; i++ )
						{
							CountBits( buffer[i] );
						}
					}
				}
			}

			Decimal total = m_count[0] + m_count[1];
			Console.WriteLine( "Percent 0: {0}", ( m_count[0] / total ) * 100 );
			Console.WriteLine( "Percent 1: {0}", ( m_count[1] / total ) * 100 );
		}

		private static void CountBits( int num )
		{
			for( int i = 0; i < 8; i++ )
			{
				int bit = num & 1;
				m_count[bit]++;
				num >>= 1;
			}
		}		   
	}
}