Exemple #1
0
        NumberElement calculate(NumberElement left, NumberElement right, OperatorElement op)
        {
            Double temp = Double.MaxValue;

            if (op.type == OperatorType.ADD)
            {
                temp = left.getNumber() + right.getNumber();
            }
            else if (op.type == OperatorType.SUBTRACT)
            {
                temp = left.getNumber() - right.getNumber();
            }
            else if (op.type == OperatorType.MULTIPLY)
            {
                temp = left.getNumber() * right.getNumber();
            }
            else if (op.type == OperatorType.DIVIDE)
            {
                temp = left.getNumber() / right.getNumber();
            }
            else if (op.type == OperatorType.EXPONENTIAL)
            {
                temp = Math.Pow(left.getNumber(), right.getNumber());
            }

            return(new NumberElement(temp.ToString()));
        }
Exemple #2
0
        public Double Evaluate(List <Element> e)
        {
            List <Element> v = new List <Element>(e);

            for (int i = 0; i < v.Count; i++)
            {
                Element element = v[i];
                if (element.GetType().Equals(typeof(NumberElement)))
                {
                    stack.Push(element);
                }
                if (element.GetType().Equals(typeof(OperatorElement)))
                {
                    NumberElement right  = (NumberElement)stack.Pop();
                    NumberElement left   = (NumberElement)stack.Pop();
                    NumberElement result = calculate(left, right, (OperatorElement)element);
                    stack.Push(result);
                }
            }
            return(((NumberElement)stack.Pop()).getNumber());
        }