protected void Button1_Click(object sender, EventArgs e)
{
Calculate calc1 = new Calculate(Example.Text);
Output.Text = calc1.Solution.ToString();
}
// Clean up the equation to determine parameters for linear equation
// e.g. X + 10 + 2X + 2 -> _a = 3, _b = 12
public void Build()
{
//Add a 0 to a trailing + or -
if (_operators.Count != 0 && _operators.Count == _numbers.Count)
{
if (_operators[_operators.Count - 1] == '+' || _operators[_operators.Count - 1] == '-')
{
_numbers.Add(new Value("0"));
}
}
// Separate equation with their respective parameters
// (X with X's [or if there's a * or / or %])
var xNumbers = new List <double>();
var xOperators = new List <char>();
var numbers = new List <double>();
var operators = new List <char>();
for (int i = 0; i < _numbers.Count; i++)
{
if (_numbers[i].Coefficient == Coefficient.X)
{
if (xNumbers.Count == 0 && i == 0)
{
// empty list and start of loop, just add number
xNumbers.Add(_numbers[i].Number);
}
else if (xNumbers.Count == 0)
{
// if operator before is negative make number negative
xNumbers.Add(_operators[i - 1] == '-' ? -_numbers[i].Number : _numbers[i].Number);
}
else
{
// add number and operator alongside
xNumbers.Add(_numbers[i].Number);
xOperators.Add(_operators[i - 1]);
}
}
else
{
if (i < _numbers.Count - 1 && "*/%".Contains(_operators[i]) &&
_numbers[i + 1].Coefficient == Coefficient.X) // if next operator is */% and the next number is an X
{
xNumbers.Add(_numbers[i].Number);
if (xOperators.Count != 0) // only add operator if list is populated
{
xOperators.Add(_operators[i - 1]);
}
}
else if (i > 0 && "*/%".Contains(_operators[i - 1]) &&
_numbers[i - 1].Coefficient == Coefficient.X) // if previous operator is */% and previous number is an X
{
xNumbers.Add(_numbers[i].Number);
xOperators.Add(_operators[i - 1]);
}
else
{
if (numbers.Count == 0 && i == 0)
{
// same logic as above
numbers.Add(_numbers[i].Number);
}
else if (numbers.Count == 0)
{
// same logic as above
numbers.Add(_operators[i - 1] == '-' ? -_numbers[i].Number : _numbers[i].Number);
}
else
{
// same logic as above
numbers.Add(_numbers[i].Number);
operators.Add(_operators[i - 1]);
}
}
}
}
_a = Calculate.CalculateInput(xNumbers.ToArray(), xOperators.ToArray()); //_a will now hold the calculated value of X for this equation
_b = Calculate.CalculateInput(numbers.ToArray(), operators.ToArray()); //_b holds the calculated value for constants
}