public string[] GetPostfixNotationEquation(string input)
{
List <string> outputSeparated = new List <string>();
Stack <string> stack = new Stack <string>();
foreach (string c in ParseEquation(input))
{
if (!c.ToTryParseToDouble(out _))
{
if (stack.Count > 0 && !c.Equals("("))
{
if (c.Equals(")"))
{
string s = stack.Pop();
while (s != "(")
{
outputSeparated.Add(s);
s = stack.Pop();
}
}
else if (stack.Peek() != "(" && _calculationOperation.GetPriority(c) > _calculationOperation.GetPriority(stack.Peek()))
{
stack.Push(c);
}
else
{
while (stack.Count > 0 && stack.Peek() != "(" && _calculationOperation.GetPriority(c) <= _calculationOperation.GetPriority(stack.Peek()))
{
outputSeparated.Add(stack.Pop());
}
stack.Push(c);
}
}
else
{
stack.Push(c);
}
}
else
{
outputSeparated.Add(c);
}
}
if (stack.Count > 0)
{
foreach (string c in stack)
{
outputSeparated.Add(c);
}
}
return(outputSeparated.ToArray());
}
public void GetPriority_should_return_number_priority(string operand, int priority)
{
var result = _calculationOperation.GetPriority(operand);
Assert.AreEqual(priority, result);
}
