public void PerformOperation_should_return_value_for_remainder_of_division()
{
_calculationOperation.AddOperation("%", (x, y) => x % y, OperationCategory.Multiplicative);
var result = _calculationOperation.PerformOperation("%", 5, 4);
Assert.AreEqual(1, result);
}
public double Execute(string input)
{
if (string.IsNullOrEmpty(input))
{
return(0);
}
Stack <string> stack = new Stack <string>();
Queue <string> queue = new Queue <string>(_postfixNotationParseEquation.GetPostfixNotationEquation(input));
string str = queue.Dequeue();
while (queue.Count >= 0)
{
if (str.ToTryParseToDouble(out _))
{
stack.Push(str);
str = queue.Count > 0 ? queue.Dequeue() : string.Empty;
}
else
{
double summ = 0;
try
{
if (stack.Count == 1)
{
if (stack.Pop().ToTryParseToDouble(out var arg3))
{
summ = arg3;
}
}
else
{
bool res = stack.Pop().ToTryParseToDouble(out var arg1);
bool res2 = stack.Pop().ToTryParseToDouble(out var arg2);
if (res && res2)
{
summ = _calculationOperation.PerformOperation(str, arg2, arg1);
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
stack.Push(summ.ToString(CultureInfo.InvariantCulture));
if (queue.Count > 0)
{
str = queue.Dequeue();
}
else
{
break;
}
}
}
return(stack.Pop().ConvertToDouble());
}