//It is the central method to call all the neccessary functions to solve equation.
//It returns calculated result as string to be displayed onto screen
public string SolveEquation(string[] equation)
{
string stringEquation = String.Join(String.Empty, equation).ToString();
ValidateThereIsVariableIn(stringEquation);
string[] separatedEquations = GetSeparatedEquationsBy(Operator.EQUAL, stringEquation);
List <Operand> calculatedEquation = new TermCalculator().GetCalculatedEquation(separatedEquations);
return(FunctionCalculator.GetResultFromFunction(calculatedEquation));
}
//It calculates the euqation in the parenthesis provided.
//In the case of (x+2)^n, it will multiply (x+2) n times.
private List <Operand> GetCalculatedParenthesis(string parenthesis, int power, bool isNegative)
{
string equationInParenthesis = OperandConverter.GetEquationInParenthesis(parenthesis);
List <Operand> calculatedParenthesis = new TermCalculator().GetCalculatedEquation(equationInParenthesis);
List <Operand> finalParenthesis = calculatedParenthesis;
for (int i = 1; i < power; i++)
{
finalParenthesis = OperandCalculator.GetCalculatedOperands(finalParenthesis, Operator.MULTIPLY, calculatedParenthesis);
}
if (isNegative)
{
finalParenthesis = OperandCalculator.GetCalculatedOperands(GetDefaultOperand(isNegative), Operator.MULTIPLY, finalParenthesis);
}
return(finalParenthesis);
}