static void Calculate(JStack N, JStack O, string exp)
{
string ch;
string token = string.Empty;
for (int p = 0; p < exp.Length; p++)
{
ch = exp.Substring(p, 1);
if (IsNumeric(ch) == true)
{
token += ch;
}
if (ch == " " || p == (exp.Length - 1))
{
if (IsNumeric(token))
{
N.Push(token);
token = string.Empty;
}
}
else if (ch == "+" || ch == "-" || ch == "*" || ch == "/")
{
O.Push(ch);
}
if (N.Count == 2)
{
Compute(N, O);
}
}
}
static void Compute(JStack N, JStack O)
{
int operand1;
int operand2;
string oper;
operand1 = Convert.ToInt32(N.Pop());
operand2 = Convert.ToInt32(N.Pop());
oper = Convert.ToString(O.Pop());
switch (oper)
{
case "+":
N.Push(operand1 + operand2);
break;
case "-":
N.Push(operand1 - operand2);
break;
case "*":
N.Push(operand1 * operand2);
break;
case "/":
N.Push(operand1 / operand2);
break;
}
}
static void Main(string[] args)
{
try
{
JStack nums = new JStack();
JStack ops = new JStack(); // Need to add user input option
string expression = "5 + 10 + 15 + 20";
Calculate(nums, ops, expression);
Console.WriteLine(nums.Pop());
Console.ReadLine();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
Console.WriteLine("Invalid Input");
Console.ReadLine();
}
}
public static void Main()
{
var testing = new JStack<int>();
testing.Push(1);
testing.Push(2);
Console.WriteLine(testing.Peek());
Console.WriteLine(testing.Pop());
Console.WriteLine(testing.Count);
Console.WriteLine(testing.Peek());
Console.WriteLine(testing.Count);
testing.Push(1);
testing.Push(2);
testing.Push(1);
testing.Push(2);
testing.Push(1);
testing.Push(2);
Console.WriteLine(testing.Count);
}
