/// <summary>
/// A 'Change' simulation task.
/// </summary>
/// <param name="load"></param>
/// <returns></returns>
private static Task ExecuteChange(WorkLoad load)
{
for (var l = 0; l < load.SampleSize && !IsAKeyRead && !IsBreak; l++)
{
load.Change.Add(AttemtsToWinMonyHallChange(1, load));
if (Program.IsAKeyRead)
{
return(Task.FromResult <bool>(false));
}
}
return(Task.FromResult <bool>(true));
}
/// <summary>
/// Updates running information.
/// </summary>
/// <param name="load"></param>
/// <param name="dtStarted"></param>
internal void Update(WorkLoad load, DateTime dtStarted)
{
//
// Render Progress
//
double percentRun1 = (Convert.ToDouble(load.NoChange.Goats + load.NoChange.Cars) * 100.0 / Convert.ToDouble(this.SampleSize));
double percentRun2 = (Convert.ToDouble(load.Change.Goats + load.Change.Cars) * 100.0 / Convert.ToDouble(this.SampleSize));
RenderProgressNoChange(percentRun1, load.NoChange.Goats + load.NoChange.Cars, load.SampleSize);
RenderProgressChange(percentRun2, load.Change.Cars + load.Change.Goats, load.SampleSize);
//
// Render Goats and Cars
//
long additional1 = load.NoChange.Goats + load.NoChange.Cars;
if (additional1 <= 0)
{
additional1 = 1;
}
else
{
additional1 = 0;
}
long additional2 = load.Change.Goats + load.Change.Cars;
if (additional2 <= 0)
{
additional2 = 1;
}
else
{
additional2 = 0;
}
Console.SetCursorPosition(17, 7);
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.NoChange.Cars.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" | ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ ((Convert.ToDouble(load.NoChange.Cars) * 100.0) / Convert.ToDouble(load.NoChange.Goats + load.NoChange.Cars + additional1)).ToString("0.00") }% ");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine();
Console.SetCursorPosition(17, 8);
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.NoChange.Goats.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" | ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ ((Convert.ToDouble(load.NoChange.Goats) * 100.0) / Convert.ToDouble(load.NoChange.Goats + load.NoChange.Cars + additional1)).ToString("0.00") }% ");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine();
Console.SetCursorPosition(17, 9);
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.NoChange.Door1.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" Total");
Console.Write(" | ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.NoChange.Door1Hits.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" Cars");
Console.Write(" | ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.NoChange.Door1Goats.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" Goats");
Console.WriteLine();
Console.SetCursorPosition(17, 10);
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.NoChange.Door2.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" Total");
Console.Write(" | ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.NoChange.Door2Hits.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" Cars");
Console.Write(" | ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.NoChange.Door2Goats.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" Goats");
Console.WriteLine();
Console.SetCursorPosition(17, 11);
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.NoChange.Door3.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" Total");
Console.Write(" | ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.NoChange.Door3Hits.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" Cars");
Console.Write(" | ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.NoChange.Door3Goats.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" Goats");
Console.WriteLine();
Console.SetCursorPosition(17, 15);
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.Change.Cars.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" | ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ ((Convert.ToDouble(load.Change.Cars) * 100.0) / Convert.ToDouble(load.Change.Goats + load.Change.Cars + additional2)).ToString("0.00") }% ");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine();
Console.SetCursorPosition(17, 16);
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.Change.Goats.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" | ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ ((Convert.ToDouble(load.Change.Goats) * 100.0) / Convert.ToDouble(load.Change.Goats + load.Change.Cars + additional2)).ToString("0.00") }% ");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine();
Console.SetCursorPosition(17, 17);
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.Change.Door1.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" Total");
Console.Write(" | ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.Change.Door1Hits.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" Cars");
Console.Write(" | ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.Change.Door1Goats.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" Goats");
Console.WriteLine();
Console.SetCursorPosition(17, 18);
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.Change.Door2.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" Total");
Console.Write(" | ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.Change.Door2Hits.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" Cars");
Console.Write(" | ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.Change.Door2Goats.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" Goats");
Console.WriteLine();
Console.SetCursorPosition(17, 19);
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.Change.Door3.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" Total");
Console.Write(" | ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.Change.Door3Hits.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" Cars");
Console.Write(" | ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{ load.Change.Door3Goats.ToString("n", this.UICultureInfo).Replace(",00", "")}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" Goats");
Console.WriteLine();
//
// Render Elapsed Time
//
Console.SetCursorPosition(17, 3);
Console.ForegroundColor = this.NumberColor;
Console.Write($"{(DateTime.Now - dtStarted)}");
}
/// <summary>
/// Appliation entry point.
/// </summary>
/// <param name="args"></param>
internal static void Main(string[] args)
{
var consoleColor = Console.ForegroundColor;
var cursorVisible = Console.CursorVisible;
Console.CancelKeyPress += (object sender, ConsoleCancelEventArgs e) =>
{
e.Cancel = true;
IsBreak = true;
};
try
{
var appArguments = new AppArguments(args);
using (var load = new WorkLoad())
{
load.SampleSize = appArguments.SampleSize;
if (!string.IsNullOrEmpty(appArguments.LogFileNoChange) && !string.IsNullOrWhiteSpace(appArguments.LogFileNoChange))
{
load.LogNoChange = new FileLogger(appArguments.LogFileNoChange);
}
if (!string.IsNullOrEmpty(appArguments.LogFileChange) && !string.IsNullOrWhiteSpace(appArguments.LogFileChange))
{
load.LogChange = new FileLogger(appArguments.LogFileChange);
}
var ui = new AppUI();
ui.SampleSize = appArguments.SampleSize;
ui.Initialize();
ThreadPool.QueueUserWorkItem(WaitForIsAKeyRead, null);
Task taskExecuteNoChange = Task.Run(() =>
{
return(ExecuteNoChange(load));
});
Task taskExecuteChange = Task.Run(() =>
{
return(ExecuteChange(load));
});
do
{
ui.Update(load, StartDateTime);
} while (!taskExecuteNoChange.IsCompleted || !taskExecuteChange.IsCompleted);
ui.Update(load, StartDateTime);
double run1Result = ((Convert.ToDouble(load.NoChange.Cars) * 100.0) / Convert.ToDouble(load.NoChange.Goats + load.NoChange.Cars));
double run2Result = ((Convert.ToDouble(load.Change.Cars) * 100.0) / Convert.ToDouble(load.Change.Goats + load.Change.Cars));
ui.RenderResult(run1Result, run2Result);
Console.WriteLine("Simulation Complete");
Console.WriteLine();
} // using
}
catch (ArgumentException)
{
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine();
Console.WriteLine("## THE MONTY HALL PROBLEM (Two Goats and a Car) ##");
Console.WriteLine("#######################################################################");
Console.WriteLine("## Supported arguments: ##");
Console.WriteLine("## ##");
Console.WriteLine("## /SampleSize:<amount> ##");
Console.WriteLine("## Default=100 ##");
Console.WriteLine("## (i) The Number of times to execute the problem. ##");
Console.WriteLine("## ##");
Console.WriteLine("## /LogFileChange:<filename> ##");
Console.WriteLine("## (i) Change Simulation log file. Only the first 1 000 000 ##");
Console.WriteLine("## simulations or less are written to log file. ##");
Console.WriteLine("## ##");
Console.WriteLine("## /LogFileNoChange:<filename> ##");
Console.WriteLine("## (i) No Change Simulation log file. Only the first 1 000 000 ##");
Console.WriteLine("## simulations or less are written to log file. ##");
Console.WriteLine("#######################################################################");
Console.WriteLine();
}
catch (Exception x)
{
Console.WriteLine(x.ToString());
}
Console.ForegroundColor = consoleColor;
Console.CursorVisible = cursorVisible;
}
/// <summary>
/// Simulation routine. Attempts to win the monty hall with change.
/// </summary>
/// <param name="numberOfAttempts"></param>
/// <returns></returns>
private static Statistics AttemtsToWinMonyHallChange(long numberOfAttempts, WorkLoad load)
{
Statistics stats = new Statistics();
if (numberOfAttempts <= 0)
{
return(stats);
}
for (long l = 0; l < numberOfAttempts; l++)
{
int seed = rnd2.Next(1, 4);
char[] doors = new char[3];
switch (seed)
{
case 1:
doors[0] = 'G';
doors[1] = 'G';
doors[2] = 'C';
break;
case 2:
doors[0] = 'G';
doors[1] = 'C';
doors[2] = 'G';
break;
case 3:
doors[0] = 'C';
doors[1] = 'G';
doors[2] = 'G';
break;
default:
break;
} // switch
// 1. round
int round1 = rnd2.Next(1, 4);
int remove1 = rnd2.Next(1, 4);
while (remove1 == round1 || doors[remove1 - 1] == 'C')
{
remove1 = rnd2.Next(1, 4);
}
int round2 = -1;
if (round1 == 1 && remove1 == 2)
{
round2 = 3;
}
else if (round1 == 1 && remove1 == 3)
{
round2 = 2;
}
else if (round1 == 2 && remove1 == 1)
{
round2 = 3;
}
else if (round1 == 2 && remove1 == 3)
{
round2 = 1;
}
else if (round1 == 3 && remove1 == 1)
{
round2 = 2;
}
else if (round1 == 3 && remove1 == 2)
{
round2 = 1;
}
switch (doors[round2 - 1])
{
case 'G':
stats.Goats = stats.Goats + 1;
switch (round2)
{
case 1:
stats.Door1Goats = stats.Door1Goats + 1;
break;
case 2:
stats.Door2Goats = stats.Door2Goats + 1;
break;
case 3:
stats.Door3Goats = stats.Door3Goats + 1;
break;
default:
break;
}
break;
case 'C':
stats.Cars = stats.Cars + 1;
switch (round2)
{
case 1:
stats.Door1Hits = stats.Door1Hits + 1;
break;
case 2:
stats.Door2Hits = stats.Door2Hits + 1;
break;
case 3:
stats.Door3Hits = stats.Door3Hits + 1;
break;
default:
break;
}
break;
default:
break;
} // switch
long count = load.Change.Goats + load.Change.Cars + 1;
if (load.LogChange != null && !IsChangeLogClosed)
{
if (count <= 1_000_000)
{
load.LogChange.WriteTo(RenderLogText(doors, round1 - 1, count));
}
else
{
load.LogChange.Dispose();
IsChangeLogClosed = true;
}
}
switch (round2)
{
case 1:
stats.Door1 = stats.Door1 + 1;
break;
case 2:
stats.Door2 = stats.Door2 + 1;
break;
case 3:
stats.Door3 = stats.Door3 + 1;
break;
default:
break;
}
}
return(stats);
}
