Exemplo n.º 1
0
        static void Main(string[] args)
        {
            List <string> list        = new OperationsForHelp().SplitOnToken(Console.ReadLine());
            Calculator    differentop = new Calculator();

            Console.WriteLine(differentop.Calc(list));
        }
Exemplo n.º 2
0
        public float Calc(List <string> list)
        {
            Stack <float>     StackDigit     = new Stack <float>();
            Stack <string>    StackOperation = new Stack <string>();
            OperationsForHelp Helpcommands   = new OperationsForHelp();

            for (int i = 0; i < list.Count; i++)
            {
                if (int.TryParse(list[i], out int a))
                {
                    StackDigit.Push(a);
                }
                else
                {
                    //// handling unary minus
                    //if (list[i] == "-" && (i == 0 || list[i-1] == "("))
                    //{
                    //    int.TryParse(list[i + 1], out int negative);
                    //    StackDigit.Push(-negative);
                    //    i++;
                    //    continue;
                    //}

                    // handling unary minus
                    if (list[i] == "-" && (i == 0 || list[i - 1] == "(" || list[i - 1] == "["))
                    {
                        list[i] = "#";
                    }
                    if (StackOperation.Length == 0 || list[i] == "(" || list[i] == "[" || Helpcommands.RankedOperation(list[i]) >
                        Helpcommands.RankedOperation(StackOperation.Peek()) ||
                        (Helpcommands.RankedOperation(list[i]) == Helpcommands.RankedOperation(StackOperation.Peek()) &&
                         !Helpcommands.IsLeftAssociative(list[i])))
                    {
                        StackOperation.Push(list[i]);
                    }
                    else
                    {
                        Helpcommands.DefaultSteps(StackDigit, StackOperation, list[i]);
                        if (list[i] != ")" || list[i] != "]")
                        {
                            StackOperation.Push(list[i]);
                        }
                    }
                }
            }
            while (StackOperation.Length != 0)
            {
                Helpcommands.DefineOperation(StackOperation.Pop(), StackDigit);
            }
            return(StackDigit.Pop());
        }