public ComplexNumber()
{
realPart = 0;
imaginaryPart = 0;
}
public ComplexNumber(Fractional real)
{
realPart = real;
imaginaryPart = 0;
}
public ComplexNumber(Fractional real, Fractional imaginary)
{
realPart = real;
imaginaryPart = imaginary;
}
public ComplexNumber(string num)
{
realPart = 0;
imaginaryPart = 0;
string[] complexStr;
if (num.Contains("+"))
{
complexStr = num.Replace(" ", "").Split('+');
}
else if (num.Contains("-"))
{
complexStr = num.Replace(" ", "").Split('-');
complexStr[complexStr.Length - 1] = "-" + complexStr[complexStr.Length - 1];
}
else
{
complexStr = new[] { num };
}
if (complexStr.Length == 0)
{
imaginaryPart = 0;
realPart = 0;
}
if (complexStr.Length == 1)
{
if (complexStr[0].EndsWith("i"))
{
imaginaryPart = complexStr[0].Equals("i")
? 1
: new Fractional(complexStr[0].Remove(complexStr[0].Length - 1));
}
else
{
realPart = new Fractional(complexStr[0]);
}
}
else if (complexStr.Length == 2)
{
if (complexStr[0].EndsWith("i"))
{
imaginaryPart = complexStr[0].Equals("i")
? 1
: new Fractional(complexStr[0].Remove(complexStr[0].Length - 1));
realPart = new Fractional(complexStr[1]);
}
if (complexStr[1].EndsWith("i"))
{
imaginaryPart = complexStr[0].Equals("i")
? 1
: new Fractional(complexStr[1].Remove(complexStr[1].Length - 1));
realPart = new Fractional(complexStr[0]);
}
}
else if (complexStr.Length > 2)
{
throw new Exception("未能识别的复数形式：" + num + "\n请使用以下格式：\"a + bi\"");
}
}