private static bool IsSeperator(char c)
{
switch (c)
{
case '_':
case '.':
case ',':
case ' ': return(true);
default: return(Helfer.GetNumber(c) != -1);
}
}
private static void Solve(string input, InOut.Ergebnis erg)
{
Stack <int> stack = new Stack <int>();
input += " ";
char c;
Operation op = null;
for (int i = 0, number = -1, num2; i < input.Length; i++)
{
c = input[i];
if (Char.IsDigit(c))
{
number = (number == -1 ? Helfer.GetNumber(c) : number * 10 + Helfer.GetNumber(c));
}
else if (c == '(')
{
stack.Push(number);
number = -1;
}
else if (c == ')')
{
number = stack.Pop();
}
else
{
if (number > -1)
{
if (op != null)
{
number = op(number, number);
}
else
{
num2 = number;
number = -1;
}
op = null;
}
if (operators.Keys.Contains(c))
{
op = operators[c];
}
}
}
erg.Setze(stack.Pop());
}
private static void EvalRPN(string input, InOut.Ergebnis erg)
{
Stack stack = new Stack();
char c;
bool num = false;
for (int i = 0, number = 0, sign = 0; i < input.Length; i++)
{
c = input[i];
if ((c == '-' || c == '+') && i + 1 < input.Length && char.IsDigit(input[i + 1]))
{
sign = c == '-' ? -1 : 1;
}
else if (char.IsDigit(c))
{
if (sign == 0)
{
sign = 1;
}
if (num)
{
number = number * 10 + Helfer.GetNumber(c);
}
else
{
number = Helfer.GetNumber(c);
}
num = true;
}
else // Not A Digit
{
if (num) // Push parsed number
{
stack.Push(number * sign);
sign = 0;
num = false;
}
if (operators.Keys.Contains(c))
{
stack.Push(operators[c](stack));
}
}
}
erg.Setze(stack.Pop <int>());
}
private static void ConvertToInt(string input, InOut.Ergebnis erg)
{
int number = 0;
try
{
if (input.Length == 0)
{
throw wrongFormat;
}
int sign = 1;
bool signed = true;
if (input[0] == '-')
{
sign = -1;
}
else if (input[0] == '+')
{
sign = 1;
}
else if (Helfer.GetNumber(input[0]) != -1)
{
signed = false;
}
else
{
throw wrongFormat;
}
char seperator = ' ';
bool sepSet = false;
for (int i = input.Length - 1, multi = 0, curr; i >= (signed ? 1:0); i--)
{
curr = Helfer.GetNumber(input[i]);
if (multi > 0 && multi % 3 == 0)
{
if (!sepSet)
{
seperator = input[i];
if (!IsSeperator(input[i]))
{
throw wrongFormat;
}
else
{
continue;
}
}
else
{
if (input[i] != seperator)
{
throw wrongFormat;
}
else
{
continue;
}
}
}
if (curr == -1)
{
throw wrongFormat;
}
if (multi >= 10)
{
throw wrongFormat;
}
number += curr * (int)Math.Pow(10, multi++);
}
number *= sign;
}
catch (FormatException fe)
{
erg.Setze(fe);
return;
}
erg.Setze(number);
}