/// <summary>
/// Get The Implementation ID of the available implementations from user
/// </summary>
/// <returns>Index of the Implementations chosen by user</returns>
public virtual int GetImplementationID()
{
string returnVal;
int retVal;
while (true)
{
returnVal = CUI.ShowImplementations(Name, Implementations);
if (string.IsNullOrEmpty(returnVal))
{
return(DefaultSubMethod);
}
else
{
if (int.TryParse(returnVal, out retVal))
{
if (retVal <= Implementations.Count)
{
return(retVal);
}
}
else
{
CUI.ErrorMessage();
}
}
}
}
public override void Compute()
{
switch (base.GetImplementationID())
{
case 1: base.StoreResult(LCSGeneral());
break;
}
CUI.ShowTimeElapsed(stopWatch.Elapsed);
}
public virtual void StoreResult <T>(List <T> output)
{
using (FileHandler outputFile = new FileHandler(Global.IOMode.Output))
{
foreach (object obj in output)
{
outputFile.WriteContent(obj);
}
}
CUI.ShowGeneralInformation("\n\nPlease open output.txt to view the result.");
}
/// <summary>
/// Check the error type, handles the error if error type is fatal
/// </summary>
/// <param name="exception">Exception that needs to be determined for fatality</param>
/// <returns>true if the exception is fatal, false otherwise</returns>
public static bool HandleFatalError(this Exception exception)
{
if (exception.IsFatal())
{
CUI.ShowGeneralInformation("\n\nA fata error occurred. Please find below the error : \n" + exception.ToString() + "\n\nPlease notify Diptarag regarding this error. \n\nSystem will exit now. Press any key to exit.");
Console.ReadKey();
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// Solve the problem and store the result using the implementations chosen by user
/// </summary>
public override void Compute()
{
if (lengthOfCut > costs.Length)
{
throw new DynamicProgrammingException("\nLength of Cut can not be more than the cost array provided, if you want to cut the rod into a length x then u must provide separate cost of each length cut i.e. cost array must be greater than x.");
}
switch (methodNumber)
{
case 1: base.StoreResult(SimpleRecursive());
break;
case 2: base.StoreResult(TopDownMemoization());
break;
case 3: base.StoreResult(BottomUpMemoization());
break;
case 4: StoreResult(BottomUpSolution());
break;
}
CUI.ShowTimeElapsed(stopWatch.Elapsed);
}
static void Main(string[] args)
{
int choice;
Dictionary <Global.Problems, string> problems = new Dictionary <Global.Problems, string>();
try
{
problems = ProblemMetaData.GetProblems();
}
catch (DynamicProgrammingException ex)
{
CUI.ShowGeneralInformation(ex.Message + "\nPlease revert any changes you have made to the xml file and try again.\n\nSystem will now exit. Press any key to exit...");
Console.ReadKey();
System.Environment.Exit(0);
}
while (true)
{
try
{
switch (CUI.StartScreen())
{
case "1":
while (true)
{
if (problems.Count >= 0 && int.TryParse(CUI.ShowProblemListings(problems), out choice) && problems.Keys.Any(e => (int)e == choice))
{
Problem problem = ProblemFactory((Global.Problems)choice);
if (problem != null)
{
problem.Compute();
//problem.StoreResult();
break;
}
throw new DynamicProgrammingException("A logical exception occurred.");
}
CUI.ErrorMessage();
}
break;
case "2": CUI.About();
break;
case "3": System.Environment.Exit(0);
break;
default: CUI.ErrorMessage();
break;
}
}
catch (Exception ex)
{
if (ex.HandleFatalError())
{
System.Environment.Exit(1);
}
else
{
ex.Handle();
}
}
}
}
