private static string PostfixFromConsole()
{
Console.WriteLine("Enter your infix expression separating each line by enter. To finish your expression press enter after an empty line.");
var expr = new List <string>();
var input = Console.ReadLine();
expr.Add(input);
while (!string.IsNullOrWhiteSpace(input))
{
input = Console.ReadLine();
expr.Add(input);
}
var postfix = "";
foreach (var line in expr)
{
if (!string.IsNullOrWhiteSpace(line))
{
var p = ReversePolishNotation.ConvertFromInfix(line);
postfix += p;
if (!string.IsNullOrWhiteSpace(p))
{
postfix += Constants.NewLine;
}
}
}
return(postfix);
}
private static string PostfixFromFile(string infix)
{
var postfix = "";
foreach (var line in infix.Split(new[] { Constants.NewLine }, StringSplitOptions.RemoveEmptyEntries))
{
if (!string.IsNullOrWhiteSpace(line))
{
var p = ReversePolishNotation.ConvertFromInfix(line);
postfix += p;
if (!string.IsNullOrWhiteSpace(p))
{
postfix += Constants.NewLine;
}
}
}
return(postfix);
}