public MainWindow()
{
InitializeComponent();
exp = new Expressions();
text.Text = "a * sin ( b * x + log(2,sin(a)+3x*y) ^ log(2,sin(a))) + abs(3+x) * cos( cos(g)+(b-4ac) )";//
}
public double Func2() //返回每个因子
{
double temp = 0;
string[] str = { "([{", ")]}" };
Expressions expressions = new Expressions();
//MessageBox.Show(facList[0]);
if (str[0].Contains(facList[0])) //删除这一项外面的括号((x-y)*x) -> (x-y)*z
{
int count = 0;
for (int i = 0; i < facList.Count; i++)
{
if (str[0].Contains(facList[i]))
{
count++;
}
else if (str[1].Contains(facList[i]))
{
count--;
}
if (count == 0)
{
if (i == facList.Count - 1)
{
facList.RemoveAt(facList.Count - 1);
facList.RemoveAt(0);
break;
}
else
{
break;
}
}
}
}
if (facList.Count == 1) //如果只有一项，只能是变量或者常量
{
if (double.TryParse(facList[0], out temp)) //常量，直接将字符转化为double的数
{
return(temp);
}
else if (Expressions.variables.Contains(new Variable(facList[0]))) //变量
{
int n = Expressions.variables.IndexOf(new Variable(facList[0])); //找到这个变量的索引
temp = Expressions.variables[n].value;
return(temp);
}
}
else //表达式||函数
{
int tpm = IsFunc(facList);
double number1; //第一个参数
double number2; //第二个参数（双目运算
List <string> exp1, exp2;
if (tpm == 1) //函数
{
if (Function.dou_Operators.Contains(facList[0])) //双目
{
//MessageBox.Show("双目");
int n = 0;
int count = 0;
exp1 = new List <string>(); //^前
for (int i = 2; i < facList.Count; i++)
{
if (str[0].Contains(facList[i]))
{
count++;
}
else if (str[1].Contains(facList[i]))
{
count--;
}
exp1.Add(facList[i]);
if (count == 0 && facList[i + 1] == ",")
{
n = i;
break;
}
}
exp2 = new List <string>(); //^后
for (int i = n + 2; i < facList.Count - 1; i++)
{
exp2.Add(facList[i]);
}
number1 = expressions.Cal(exp1);
number2 = expressions.Cal(exp2);
Function factor = new Function(facList[0], number1, number2);
temp = factor.Func();
return(temp);
}
else if (Function.m_Operators.Contains(facList[0])) //单目
{
//MessageBox.Show("单目");
exp1 = new List <string>();
string str2 = "";
for (int i = 2; i < facList.Count - 1; i++)
{
exp1.Add(facList[i]);
str2 += facList[i];
}
//MessageBox.Show(str2);
number1 = expressions.Cal(exp1);
Function factor = new Function(facList[0], number1);
temp = factor.Func();
return(temp);
}
}
else if (tpm == 2)//处理乘方 ^
{
//MessageBox.Show("liang");
int count = 0;
int n = 0;
//string stttt = "";
exp1 = new List <string>(); //^前
for (int i = 0; i < facList.Count; i++)
{
//stttt += facList[i];
if (str[0].Contains(facList[i]))
{
count++;
}
else if (str[1].Contains(facList[i]))
{
count--;
}
exp1.Add(facList[i]);
if (count == 0)
{
if (!Function.dou_Operators.Contains(facList[i]) && !Function.m_Operators.Contains(facList[i]))
{
n = i;
break;
}
}
}
//MessageBox.Show(stttt);
exp2 = new List <string>(); //^后
for (int i = n + 2; i < facList.Count; i++)
{
exp2.Add(facList[i]);
//stttt += facList[i];
}
number1 = expressions.Cal(exp1);
number2 = expressions.Cal(exp2);
Function factor = new Function("^", number1, number2);
temp = factor.Func();
return(temp);
}
else //表达式
{
//MessageBox.Show("falssss");
if (facList.Count > 0)
{
temp = expressions.Cal(facList);
}
return(temp);
}
}
MessageBox.Show("error???");
return(temp);
}
