static String getIncomingStr()
{
String incomingStr = Console.ReadLine();
while (!ReversePolish.isSudoValidReversePolishString(incomingStr))
{
Console.WriteLine("\"{0}\" Is not a valid number or polish-notation number.\n", incomingStr);
Console.WriteLine("Please try again:\n");
incomingStr = Console.ReadLine();
}
return(incomingStr);
}
static void Main(string[] args)
{
bool quit = false;
while (!quit)
{
Greeting();
String incoming = getIncomingStr();
Console.WriteLine("");
Tuple <bool, String> normalizedIncomingRslt = ReversePolish.toResult(incoming);
double fibMax = Convert.ToDouble(normalizedIncomingRslt.Item2);
PrintList(fibTo(fibMax));
quit = !askIfContinue();
}
}
public static Tuple <bool, String> toResult(String str)
{
if (str.Length <= 2)
{
// Reverse string
return(Tuple.Create(true, new String(str.ToCharArray().Reverse().ToArray())));
}
ArrayList xs = new ArrayList();
String[] parts = str.Split(' ');
String lastOp = "";
Tuple <bool, String> outResult;
Int32 ind = 0;
foreach (String x in parts)
{
// If is empty string, continue
if (x.Length == 0)
{
continue;
}
else if (ReversePolish.isReversePolishDigit(x))
{
xs.Add(Convert.ToDouble(x));
ind += 1;
continue;
}
String possibleCorrectOp = x.ToLower();
dynamic a = xs[ind - 2];
dynamic b = xs[ind - 1];
dynamic c;
xs.RemoveAt(ind - 1);
xs.RemoveAt(ind - 2);
ind -= 2;
switch (possibleCorrectOp)
{
case "e":
case "^":
c = (float)Math.Pow(a, b);
break;
case "x":
case "*":
c = a * b;
break;
case "/":
case "÷":
c = a / b;
break;
case "%":
c = a % b;
break;
case "+":
c = a + b;
break;
case "-":
c = a - b;
break;
default:
c = null;
break;
}
if (c != null)
{
xs.Add(c);
lastOp = possibleCorrectOp;
ind += 1;
}
}
bool reversePolishSuccess = xs.Count == 1;
if (!reversePolishSuccess)
{
int lastIndex = xs.Count - 1;
xs.InsertRange(lastIndex, (new String(lastOp.ToCharArray()[0], lastIndex)).ToArray());
outResult = toResult(String.Join(" ", xs));
}
else
{
outResult = Tuple.Create(reversePolishSuccess, Convert.ToString(xs[0]));
}
return(outResult);
}