public void ConvertToPostfix_StringExpression_ArrayOfStringsPostfixExpression(string input, string expected)
{
// Act
string result = string.Join("", NotationConverter.ConvertToPostfix(input, _operators));
// Assert
Assert.AreEqual(result, expected);
}
public string Calculate()
{
IExpressionValidator expressionValidator = Factory.CreateExpressionValidator();
expressionValidator.Expression = string.Join("", InfixNotationValue);
if (expressionValidator.Validate())
{
PostfixNotationValue = NotationConverter.ConvertToPostfix(string.Join("", InfixNotationValue), _operators);
foreach (var item in PostfixNotationValue)
{
if (_operators.Contains(item))
{
B = double.Parse(Stack.Pop());
A = double.Parse(Stack.Pop());
if (item == "/")
{
State = ExpressionSubjectState.Division;
this.Notify();
}
else if (item == "*")
{
State = ExpressionSubjectState.Multiplication;
this.Notify();
}
else if (item == "+")
{
State = ExpressionSubjectState.Addition;
this.Notify();
}
else if (item == "-")
{
State = ExpressionSubjectState.Subtraction;
this.Notify();
}
}
else
{
Stack.Push(item);
}
}
return(Result = Stack.Pop());
}
else
{
return(Result);
}
}