static void Main(string[] args)
{
//string exprString = "(a+b)*(c-d)/(e+f)";
string exprString = "sin(x)+cos(x)*2-(9.84/2)^(a)";
List<Token> tokens = Tokenizer.Tokenize(exprString);
Console.WriteLine("** Tokenize **");
tokens.ForEach(x => Console.WriteLine(x.ToString()));
Console.WriteLine("** Analyze **");
Node root = new Node();
root.Parse(tokens);
Console.WriteLine(root.ToString());
Console.WriteLine("** Evaluate **");
Console.WriteLine("* Parameters *");
Dictionary<char, double> parameter = new Dictionary<char, double>()
{
{'a', 1.4},
{'b', 2.8},
{'c', 2.2},
{'d', 2.4},
{'e', 5.1},
{'f', 9.7},
{'t', Math.PI / 4},
{'x', 2.0}
};
foreach (var p in parameter)
Console.WriteLine("{0} = {1}", p.Key, p.Value);
System.Diagnostics.Stopwatch sw = new System.Diagnostics.Stopwatch();
List<TimeSpan> elapsedTimes = new List<TimeSpan>();
for (int i = 0; i < 1; i++)
{
sw.Start();
root.Evaluate(parameter);
Console.WriteLine("i = " + i + ": " + root.Evaluate(parameter));
sw.Stop();
// Console.WriteLine(" Elapsed Time: " + sw.Elapsed);
elapsedTimes.Add(sw.Elapsed);
sw.Reset();
}
Console.WriteLine("Average Elapsed Time: " + TimeSpan.FromMilliseconds(elapsedTimes.Average(ts => ts.Milliseconds)));
//Expression expr = ArithmeticExpression.Expression.Parse(exprString);
//Console.WriteLine("-- Original");
//Console.WriteLine(exprString);
//Console.WriteLine("-- Postorder");
//Console.WriteLine(expr.Root.TraversePostorder());
//Console.WriteLine();
//Console.WriteLine("-- Inorder");
//Console.WriteLine(expr.Root.TraverseInorder());
//Console.WriteLine();
//Console.WriteLine("-- Preorder");
//Console.WriteLine(expr.Root.TraversePreorder());
//Console.WriteLine();
Console.ReadKey();
}
