在 main 方法中从键盘输入两个整数，依次为：随机种子 seed 和 复数类 Complex 对象的个数 num 。然后随机生成 num 个 Complex 对象存入 cs1 数组中，再随机生成 num 个 Complex 对象存入 cs2 数组中。 然后对 cs1 和 cs2 数组中对应的复数对象依次执行如下操作： ① 判断 cs1[i] 和 cs2[i] 是否相等； ② 将 cs1[i] 和 cs2[i] 相加并输出； ③ 将 cs1[i] 和 cs2[i] 相减并输出； ④ 将 cs1[

i] 和 cs2[i] 相乘并输出。下面是代码实现：

import java.util.Scanner;
import java.util.Random;

public class Main {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.print("请输入随机种子：");
        int seed = input.nextInt();
        System.out.print("请输入复数对象的个数：");
        int num = input.nextInt();

        Random random = new Random(seed);
        Complex[] cs1 = new Complex[num];
        Complex[] cs2 = new Complex[num];

        // 随机生成复数对象并存入数组中
        for (int i = 0; i < num; i++) {
            double real = random.nextDouble() * 10;
            double imag = random.nextDouble() * 10;
            cs1[i] = new Complex(real, imag);

            real = random.nextDouble() * 10;
            imag = random.nextDouble() * 10;
            cs2[i] = new Complex(real, imag);
        }

        // 依次执行操作
        for (int i = 0; i < num; i++) {
            System.out.println("第" + (i+1) + "对复数：");
            if (cs1[i].equals(cs2[i])) {
                System.out.println("cs1[" + i + "] 和 cs2[" + i + "] 相等");
            } else {
                System.out.println("cs1[" + i + "] 和 cs2[" + i + "] 不相等");
            }

            Complex addResult = cs1[i].add(cs2[i]);
            System.out.println("cs1[" + i + "] + cs2[" + i + "] = " + addResult);

            Complex subResult = cs1[i].sub(cs2[i]);
            System.out.println("cs1[" + i + "] - cs2[" + i + "] = " + subResult);

            Complex mulResult = cs1[i].mul(cs2[i]);
            System.out.println("cs1[" + i + "] * cs2[" + i + "] = " + mulResult);
        }
    }
}

class Complex {
    private double real;
    private double imag;

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

    public boolean equals(Complex c) {
        return this.real == c.real && this.imag == c.imag;
    }

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

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

    public Complex mul(Complex c) {
        double real = this.real * c.real - this.imag * c.imag;
        double imag = this.real * c.imag + this.imag * c.real;
        return new Complex(real, imag);
    }

    public String toString() {
        return String.format("%.2f+%.2fi", real, imag);
    }
}