定义一个复数类complex

好的，我可以为您定义一个复数类complex。

class complex:
def __init__(self, real, imag):
self.real = real
self.imag = imag

def __add__(self, other):
return complex(self.real + other.real, self.imag + other.imag)

def __sub__(self, other):
return complex(self.real - other.real, self.imag - other.imag)

def __mul__(self, other):
return complex(self.real * other.real - self.imag * other.imag, self.imag * other.real + self.real * other.imag)

def __str__(self):
return "{0}+{1}i".format(self.real, self.imag)

这是一个简单的复数类，它可以进行加、减、乘运算。您可以通过实例化该类并传递实部和虚部来创建复数。如果您有任何问题，请随时问我。

相关问题

python定义一个复数类complex

Python中已经有一个内置的复数类complex，可以直接使用。如果需要自定义一个复数类，可以按照以下方式定义：

class Complex:
    def __init__(self, real, imag):
        self.real = real
        self.imag = imag

    def __add__(self, other):
        return Complex(self.real + other.real, self.imag + other.imag)

    def __sub__(self, other):
        return Complex(self.real - other.real, self.imag - other.imag)

    def __mul__(self, other):
        return Complex(self.real * other.real - self.imag * other.imag, self.real * other.imag + self.imag * other.real)

    def __truediv__(self, other):
        denominator = other.real ** 2 + other.imag ** 2
        return Complex((self.real * other.real + self.imag * other.imag) / denominator, (self.imag * other.real - self.real * other.imag) / denominator)

    def __str__(self):
        return f"{self.real} + {self.imag}i"

这个类包含了四个基本的运算方法：加、减、乘、除。其中加、减、乘的实现比较简单，除法需要用到复数的共轭。同时，为了方便输出，还定义了一个__str__方法。

java定义一个复数类complex

public class Complex {
    private double real;
    private double imag;

    public Complex(double real, double imag) {
        this.real = real;
        this.imag = imag;
    }

    public double getReal() {
        return real;
    }

    public void setReal(double real) {
        this.real = real;
    }

    public double getImag() {
        return imag;
    }

    public void setImag(double imag) {
        this.imag = imag;
    }

    public Complex add(Complex c) {
        return new Complex(real + c.real, imag + c.imag);
    }

    public Complex subtract(Complex c) {
        return new Complex(real - c.real, imag - c.imag);
    }

    public Complex multiply(Complex c) {
        return new Complex(real*c.real - imag*c.imag, real*c.imag + imag*c.real);
    }

    public Complex divide(Complex c) {
        double a = real, b = imag, c = c.real, d = c.imag;
        return new Complex((a*c + b*d) / (c*c + d*d), (b*c - a*d) / (c*c + d*d));
    }

    public String toString() {
        return "(" + real + " + " + imag + "i)";
    }
}

这是一个简单的复数类的实现，它包含了常见的加减乘除方法，以及用于获取实部和虚部的 get 方法和 set 方法。请注意，这里的复数是用实部和虚部来表示的。