复数java实验_java实验 复数

好的，以下是一个基本的Java实验，用于实现复数类和一些基本操作：

public class ComplexNumber {
    private double real;
    private double imaginary;

    public ComplexNumber(double real, double imaginary) {
        this.real = real;
        this.imaginary = imaginary;
    }

    public double getReal() {
        return real;
    }

    public double getImaginary() {
        return imaginary;
    }

    public ComplexNumber add(ComplexNumber other) {
        return new ComplexNumber(real + other.real, imaginary + other.imaginary);
    }

    public ComplexNumber subtract(ComplexNumber other) {
        return new ComplexNumber(real - other.real, imaginary - other.imaginary);
    }

    public ComplexNumber multiply(ComplexNumber other) {
        double newReal = real * other.real - imaginary * other.imaginary;
        double newImaginary = real * other.imaginary + imaginary * other.real;
        return new ComplexNumber(newReal, newImaginary);
    }

    public ComplexNumber divide(ComplexNumber other) {
        double denominator = other.real * other.real + other.imaginary * other.imaginary;
        double newReal = (real * other.real + imaginary * other.imaginary) / denominator;
        double newImaginary = (imaginary * other.real - real * other.imaginary) / denominator;
        return new ComplexNumber(newReal, newImaginary);
    }

    public String toString() {
        if (imaginary < 0) {
            return real + " - " + (-imaginary) + "i";
        } else {
            return real + " + " + imaginary + "i";
        }
    }
}

这个类定义了一个名为ComplexNumber的复数类，包含实部和虚部。您可以通过调用实例方法来执行以下操作：
- add()：添加两个复数。
- subtract()：从两个复数中减去一个。
- multiply()：将两个复数相乘。
- divide()：将两个复数相除。
- toString()：将复数作为字符串返回。

以下是一个简单的示例，演示如何使用ComplexNumber类：

public class Main {
    public static void main(String[] args) {
        ComplexNumber c1 = new ComplexNumber(1, 2);
        ComplexNumber c2 = new ComplexNumber(3, 4);

        ComplexNumber sum = c1.add(c2);
        ComplexNumber difference = c1.subtract(c2);
        ComplexNumber product = c1.multiply(c2);
        ComplexNumber quotient = c1.divide(c2);

        System.out.println("c1: " + c1.toString());
        System.out.println("c2: " + c2.toString());
        System.out.println("Sum: " + sum.toString());
        System.out.println("Difference: " + difference.toString());
        System.out.println("Product: " + product.toString());
        System.out.println("Quotient: " + quotient.toString());
    }
}

输出结果：

c1: 1.0 + 2.0i
c2: 3.0 + 4.0i
Sum: 4.0 + 6.0i
Difference: -2.0 - 2.0i
Product: -5.0 + 10.0i
Quotient: 0.44 + 0.08i

希望这个例子能够对你有所帮助！