static void Main(string[] args)
{
string text = Console.ReadLine();;
string post = InfixToPostfix(text);
Console.WriteLine(post);
Stacks.Stack data = new ArrayStack(post.Length);
for (int i = 0; i < post.Length; i++)
{
char token = post[i];
if (!IsOperator(token))
{
// Console.WriteLine(token);
data.push(int.Parse(token.ToString()));
}
else
{
int last = (int)data.pop();
int first = (int)data.pop();
switch (token)
{
case '+':
// Console.WriteLine("1-");
data.push(first + last); break;
case '-':
// Console.WriteLine("2-");
data.push((first - last)); break;
case '*':
// Console.WriteLine("3-");
//Console.WriteLine(first);
data.push((first * last)); break;
case '/':
// Console.WriteLine("4-");
data.push((first / last)); break;
case '^':
// Console.WriteLine("5-");
data.push((first ^ last)); break;
}
}
}
Console.WriteLine(Convert.ToInt32(data.peek()));
}
static string InfixToPostfix(string text)
{
string text1 = "";
ArrayStack data = new ArrayStack(text.Length);
if (IsCorrectParentheses(text))
{
for (int i = 0; i < text.Length; i++)
{
char token = text[i];
if (IsOperator(token))
{
int p = Lv(token);
while (!data.isEmpty() && Lv((char)data.peek(), true) >= p)
{
text1 += data.pop();
}
if (token.Equals(')'))
{
data.pop();
}
else
{
data.push(token);
}
}
else
{
text1 += text[i];
}
}
}
while (!data.isEmpty())
{
text1 += data.pop();
}
return(text1);
}
