private static void TestArithmetic()
{
do
{
Console.Clear();
Console.Write("Введите арифметическое выражение: ");
string expression = Console.ReadLine();
string convertedExpression = PolishArithmetic.GetPolishNotation(expression);
Console.WriteLine("\nВыражение в обратной польской нотации: {0}", convertedExpression);
string result = PolishArithmetic.CalculatePolishExpression(convertedExpression);
Console.Write("\nРезультат вычисления: ");
if (!Char.IsLetter(result[0]))
{
Console.Write(result);
}
Console.WriteLine();
PolishArithmetic.SetVars();
foreach (KeyValuePair <string, string> p in PolishArithmetic.Vars)
{
Console.WriteLine(p.Key + " = " + p.Value);
}
PolishArithmetic.Vars.Clear();
Console.WriteLine("\n(Нажмите ESC, чтобы выйти)");
}while (Console.ReadKey().Key != ConsoleKey.Escape);
}
// Вычисляет выражение, переведенное в обратную польскую запись
public static string CalculatePolishExpression(List <string> polishExpression)
{
// a 0 > 11 !F a a ~ = 16 !! a b 1 + = $
int currentPosition = 0;
List <string> expressionBuffer = new List <string>();
string Result = "";
while (currentPosition < polishExpression.Count)
{
if (polishExpression[currentPosition] == "$")
{
if (expressionBuffer.Count != 0)
{
string arithmeticExpression = "";
foreach (string s in expressionBuffer)
{
arithmeticExpression += s + " ";
}
arithmeticExpression = arithmeticExpression.Remove(arithmeticExpression.Length - 1);
Result = PolishArithmetic.CalculatePolishExpression(arithmeticExpression);
}
break;
}
else if (polishExpression[currentPosition] == "!F")
{
string transition = expressionBuffer[expressionBuffer.Count - 1];
expressionBuffer.RemoveAt(expressionBuffer.Count - 1);
string logicExpression = "";
foreach (string s in expressionBuffer)
{
logicExpression += s + " ";
}
logicExpression = logicExpression.Remove(logicExpression.Length - 1);
string logicResult = PolishArithmetic.CalculatePolishExpression(logicExpression, true);
expressionBuffer.Clear();
if (logicResult == "0")
{
currentPosition = Convert.ToInt32(transition);
continue;
}
}
else if (polishExpression[currentPosition] == "!!")
{
string transition = expressionBuffer[expressionBuffer.Count - 1];
expressionBuffer.RemoveAt(expressionBuffer.Count - 1);
string arithmeticExpression = "";
foreach (string s in expressionBuffer)
{
arithmeticExpression += s + " ";
}
arithmeticExpression = arithmeticExpression.Remove(arithmeticExpression.Length - 1);
Result = PolishArithmetic.CalculatePolishExpression(arithmeticExpression);
currentPosition = Convert.ToInt32(transition);
expressionBuffer.Clear();
continue;
}
else
{
expressionBuffer.Add(polishExpression[currentPosition]);
}
currentPosition++;
}
return(Result);
}
