public Formula.Formula CalculateMulDiv(Formula.Formula data) {
while (true) {
try {
Operator.OperatorCode[] MulDiv = new Operator.OperatorCode[2];
MulDiv[0] = Operator.OperatorCode.Mul;
MulDiv[1] = Operator.OperatorCode.Div;
int Index = FindFirst(data, MulDiv);
Value value =
Calculate.CalculateValue(
data.GetData()[Index - 1].GetNumber(),
data.GetData()[Index].GetNumber(),
data.GetData()[Index].GetOperator_OperatorCode());
// i sets the first operator in + so Index will least be 1
data = DeleteIndexWriteValue(Index, value, data);
} catch (Exception e) {
return data;
}
}
}
Formula.Formula DeleteIndexWriteValue(int Index, Value Value, Formula.Formula OldData)
throws Exception {
// ----------------prepare to create a new Formula.------------------------
char[] Operators = new char[OldData.GetData().length - 1];
// because Index is going to be delete, so we must - 1
Value[] Numbers = new Value[OldData.GetData().length - 1];
// so do the numbers.
int Shift = 0;
for (int i = 0; i != OldData.GetData().length - 1; ) {
if (i == Index && Shift == 0) {
Shift++;
continue;
}
Operators[i] = OldData.GetData()[i + Shift].GetOperator_Char();
Numbers[i] = OldData.GetData()[i + Shift].GetNumber();
i++;
}
Numbers[Index - 1] = Value;
return new Formula.Formula(Operators, Numbers);
}
int FindFirst(Formula.Formula data, Operator.OperatorCode[] code) throws Exception {
for (int i = 0; i != data.GetData().length; i++) {
if (IsAny(code, data.GetData()[i].GetOperator_OperatorCode())) return i;
}
throw new Exception("Unable to find the code.");
}
