bool СorrectCheckElements(List <string> elements)
{
double num = 0;
for (int i = 0; i < elements.Count; i++)
{
if (!UniversalDoubleParserFromStr.ParseToDoubleAnyWay(elements[i], out num))
{
if (OperationPriority(elements[i]) == -1)
{
if (!CheckExistBrackets(elements[i]))
{
return(false);
}
else
{
continue;
}
}
else
{
continue;
}
}
else
{
continue;
}
}
return(true);
}
//алгоритм польской записи
public List <string> GetExpressionPolishEntry(string stringForPars)
{
Stack <string> operationsStack = new Stack <string>();
string lastOperation = "";
List <string> elements = GetExpression(stringForPars);
if (elements.Count != 0)
{
List <string> result = new List <string>();
double num = 0;
for (int i = 0; i < elements.Count; i++)
{
if (UniversalDoubleParserFromStr.ParseToDoubleAnyWay(elements[i], out num))
{
result.Add(elements[i]);
continue;
}
if (OperationPriority(elements[i]) != -1)
{
if (operationsStack.Count != 0)
{
lastOperation = operationsStack.Peek();
}
else
{
operationsStack.Push(elements[i]);
continue;
}
if (OperationPriority(lastOperation) < OperationPriority(elements[i]))
{
operationsStack.Push(elements[i]);
continue;
}
else
{
if (OperationPriority(lastOperation) >= OperationPriority(elements[i]))
{
result.Add(operationsStack.Pop());
operationsStack.Push(elements[i]);
continue;
}
}
}
if (CheckExistLeftBracket(elements[i]))
{
operationsStack.Push(elements[i]);
continue;
}
if (CheckExistRightBracket(elements[i]))
{
while (operationsStack.Peek() != "(")
{
result.Add(operationsStack.Pop());
}
operationsStack.Pop();
}
}
while (operationsStack.Count != 0)
{
result.Add(operationsStack.Pop());
}
return(result);
}
return(new List <string>());
}
