public Example GetExample(string fileName)
{
try
{
string buffer;
string optCriterion;
int inequalityID = 1;
List <Equation> inequalities = new List <Equation>();
List <double> targetFunctionCoefficients = null;
IOptimalityCriterion optimalityCriterion = null;
double freeCoef = 0;
TargetFunction targetFunction;
StreamReader reader = new StreamReader(fileName);
while ((buffer = reader.ReadLine()) != null)
{
if (buffer == INEQUALITIES_TAG)
{
while ((buffer = reader.ReadLine()) != END_INEQUALITIES_TAG)
{
if (!string.IsNullOrWhiteSpace(buffer))
{
inequalities.Add(TranslateStringToEquation(buffer, inequalityID));
inequalityID++;
}
}
}
if (buffer == TARGET_FUNCTION_COEFS_TAG)
{
while ((buffer = reader.ReadLine()) != END_TARGET_FUNCTION_COEFS_TAG)
{
if (!string.IsNullOrWhiteSpace(buffer))
{
targetFunctionCoefficients = TranslateStringToTargetFunctionCoefficients(buffer);
}
}
}
if (buffer == FREE_COEFFICIENT_TAG)
{
while ((buffer = reader.ReadLine()) != END_FREE_COEFFICIENT_TAG)
{
if (!string.IsNullOrWhiteSpace(buffer))
{
freeCoef = Convert.ToDouble(buffer);
}
}
}
if (buffer == OPTIMALITY_CRITERION_TAG)
{
while ((buffer = reader.ReadLine()) != END_OPTIMALITY_CRITERION_TAG)
{
if (!string.IsNullOrWhiteSpace(buffer))
{
optCriterion = buffer.ToLower();
if (optCriterion == "max")
{
optimalityCriterion = new MaxOptimalityCriterion();
}
else if (optCriterion == "min")
{
optimalityCriterion = new MinOptimalityCriterion();
}
}
}
}
}
reader.Close();
if (targetFunctionCoefficients == null || optimalityCriterion == null)
{
throw new Exception("Отсутствуют необходимые данные и критерии оптимальности или о коэф-ах целевой функции");
}
targetFunction = new TargetFunction(targetFunctionCoefficients, optimalityCriterion, freeCoef);
return(new Example(inequalities, targetFunction));
}
catch (Exception e)
{
throw new Exception($"Файл {fileName} не существует, либо в нем неверные данные. Конкретная причина - {e.Message}");
}
}
public TargetFunction(List <double> coeffiecients, IOptimalityCriterion criterion, double freeCoefficient = default)
{
Coefficients = coeffiecients;
OptimalityCriterion = criterion;
FreeCoefficient = freeCoefficient;
}
public SimplexMethod(SimplexTable startTable, IOptimalityCriterion optimalityCriterion)
{
_table = startTable;
_optimalityCriterion = optimalityCriterion;
}
