public void calculateTest()
{
RpnExpression re = new RpnExpression();
Assert.AreEqual(300, re.calculate(100, 200, "+"));
Assert.AreEqual(-100, re.calculate(100, 200, "-"));
Assert.AreEqual(0.0693, re.calculate(0.33, 0.21, "*"));
Assert.AreEqual(0.4, re.calculate(2, 5, "/"));
}
public void isOperatorTest()
{
RpnExpression re = new RpnExpression();
// Only +, -, *, / available
Assert.IsTrue(re.isOperator("+"));
Assert.IsTrue(re.isOperator("-"));
Assert.IsTrue(re.isOperator("*"));
Assert.IsTrue(re.isOperator("/"));
// Any others unavailable
Assert.IsFalse(re.isOperator("("));
Assert.IsFalse(re.isOperator(")"));
}
static void Main(string[] args)
{
String handle = "1";
do
{
try
{
Console.Write("Please select the decimal delimiter type, [1]comma, [2]point\r\n\r\n");
char dl = '1';
while (dl.Equals('1'))
{
String spliter = Console.ReadLine();
if (spliter.Equals("1"))
{
dl = ',';
}
else if (spliter.Equals("2"))
{
dl = '.';
}
else
{
Console.Write("Please input correct option, [1]comma, [2]point\r\n\r\n");
}
}
Console.Write("Please input the RPN array, use space to split the digital & operator arrays ...\r\n\r\n");
String rpnArray = Console.ReadLine();
Console.WriteLine("Your proposed Reverse Polish Notation is: '" + rpnArray + "'\r\n");
RpnExpression rpnEx = new RpnExpression(rpnArray, dl);
//Console.WriteLine(rpnEx.IsInputValid);
double result = rpnEx.calculate();
String re = result.ToString();
if (dl.Equals(','))
{
re = result.ToString().Replace(".", ",");
}
Console.WriteLine("The calculated value of the RPN expression is: '" + re + "'\r\n\r\n");
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
Console.WriteLine("Please select next step, [1]Continue, [Others]Close & Exit\r\n");
handle = Console.ReadLine();
}
while (handle.Equals("1"));
}
static void RealWorlExampleMain()
{
Console.WriteLine("Real world example");
Console.WriteLine("Enter RPN expression:");
Evaluator evaluator = new Evaluator();
string enteredRpnExpression = Console.ReadLine();
RpnExpression rpnExpression = evaluator.Parse(enteredRpnExpression);
int result = rpnExpression.Interpret();
Console.WriteLine("Result: " + result);
Console.Read();
}
public void isDoubleTest()
{
RpnExpression re = new RpnExpression();
// Integer is ok to both ',' and '.'
Assert.IsTrue(re.isDouble("-1", '.'));
Assert.IsTrue(re.isDouble("100", '.'));
// Double need to judge if ',' or '.'
Assert.IsTrue(re.isDouble("0.01", '.'));
Assert.IsFalse(re.isDouble("0.01", ','));
Assert.IsTrue(re.isDouble("0,01", ','));
Assert.IsFalse(re.isDouble("0,01", '.'));
// Operator should false for both ',' and '.'
Assert.IsFalse(re.isDouble("/", ','));
Assert.IsFalse(re.isDouble("/", '.'));
}
public void calculateTest1()
{
// Integer
RpnExpression re = new RpnExpression("100 200 300 - +", '.');
Assert.AreEqual(0, re.calculate());
re = new RpnExpression("100 20 200 - 30 / 50 * +", '.');
Assert.AreEqual(-200, re.calculate());
re = new RpnExpression("100 200 300 - +", ',');
Assert.AreEqual(0, re.calculate());
re = new RpnExpression("100 20 200 - 30 / 50 * +", ',');
Assert.AreEqual(-200, re.calculate());
// Double
re = new RpnExpression("10,2 12,5 10 - 0,5 / 50 * +", ',');
Assert.AreEqual(260.2, re.calculate());
re = new RpnExpression("10.2 12.5 10 - 0.5 / 50 * +", '.');
Assert.AreEqual(260.2, re.calculate());
}
/// <summary>
/// Sequential call of methods to transform and calculate the result of an expression.
/// </summary>
/// <param name="expression">Expression to evaluate.</param>
private void ParseExpression(string expression)
{
var mathExpression = new MathExpression(expression);
if (!mathExpression.IsValid)
{
return;
}
var listOfElements = new ListOfElements(mathExpression);
var rpnExpression = new RpnExpression(listOfElements);
var rpnCalculationAlgorithm = new RpnCalculationAlgorithm(rpnExpression);
if (rpnCalculationAlgorithm.IsValid)
{
_result = rpnCalculationAlgorithm.Result;
}
}
public void validInputTest()
{
RpnExpression re = new RpnExpression();
// Space array is ok
Assert.IsTrue(re.validInput("-1 0.01 +", '.'));
Assert.IsTrue(re.validInput("-1 0,01 +", ','));
Assert.IsTrue(re.validInput("2,5 5 /", ','));
Assert.IsTrue(re.validInput("2.5 5 /", '.'));
// Numbers of operator and digi is not different with 1
Assert.IsFalse(re.validInput("-1 200 0,01 +", ','));
Assert.IsTrue(re.validInput("-1 200 0,01 + -", ','));
// Incorrect & Correct operator
Assert.IsFalse(re.validInput("-1 200 0,01 + %", ','));
Assert.IsTrue(re.validInput("-1 200 0,01 + *", ','));
// Operator incorrect position
Assert.IsFalse(re.validInput(" - -1 200 0,01 + ", ','));
Assert.IsFalse(re.validInput("-1 - 200 0,01 *", ','));
Assert.IsTrue(re.validInput(" -1 200 0,01 / + ", ','));
Assert.IsTrue(re.validInput("-1 200 0,01 * /", ','));
}