// ============ ВЫПОЛНЕНИЕ ДЕЙСТВИЯ НАД ДВУМЯ ЧИСЛАМИ ============
public static void Calculate(MyStack <float> numbers, MyStack <string> symbols)
{
float b = numbers.Pop();
float a = numbers.Pop();
string sym = symbols.Pop();
float result = 0;
switch (sym)
{
case "+":
result = a + b;
break;
case "-": result = a - b;
break;
case "*": result = a * b;
break;
case "/": result = a / b;
break;
}
numbers.Push(result);
}
// ============ ПОДСЧЕТ ЗНАЧЕНИЯ ВЫРАЖЕНИЯ ============
public static void SolveProblem(string[] problem)
{
MyStack <float> numbers = new MyStack <float>();
MyStack <string> symbols = new MyStack <string>();
foreach (var el in problem)
{
float number;
bool success = float.TryParse(el, out number);
if (success)
{
numbers.Push(number);
}
else if (symbols.IsEmpty)
{
symbols.Push(el);
}
else if (el == "*" || el == "/")
{
if (symbols.Peek() == "+" || symbols.Peek() == "-")
{
symbols.Push(el);
}
else
{
while (!symbols.IsEmpty && symbols.Peek() != "+" && symbols.Peek() != "-")
{
Calculate(numbers, symbols);
if (symbols.IsEmpty)
{
symbols.Push(el);
break;
}
else if (symbols.Peek() == "+" || symbols.Peek() == "-")
{
symbols.Push(el);
break;
}
}
}
}
else
{
while (!symbols.IsEmpty)
{
Calculate(numbers, symbols);
if (symbols.IsEmpty)
{
symbols.Push(el);
break;
}
}
}
}
while (!symbols.IsEmpty)
{
Calculate(numbers, symbols);
}
Console.WriteLine($"Result: {numbers.Pop()}");
}