Java创建一个复数类

package table;

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public class Complex

{

double real;

double imaginary;

public static final Complex ZERO = new Complex (0, 0);

public static final Complex ONE = new Complex (1, 0);

public static final Complex I = new Complex (0, 1);

public Complex ( double real, double imaginary )

{

this.real = real;

this.imaginary = imaginary;

}

public double magnitude ()

{

return Math.sqrt (this.real * this.real + this.imaginary * this.imaginary);

}

public Complex negative ()

{

return new Complex (-real, -imaginary);

}

public double valueOf ()

{

return this.real;

}

public Complex add ( Complex a, Complex b )

{

return new Complex (a.real + b.real, a.imaginary + b.imaginary);

}

public Complex subtract ( Complex a, Complex b )

{

return new Complex (a.real - b.real, a.imaginary - b.imaginary);

}

public Complex multiply ( Complex a, Complex b )

{

return new Complex (a.real * b.real - a.imaginary * b.imaginary, a.real * b.imaginary + a.imaginary * b.real);

}

@Override

public String toString ()

{

StringBuilder builder = new StringBuilder ();

builder.append ("Complex [real=").append (real).append (", imaginary=").append (imaginary).append ("]");

return builder.toString ();

}

}

java 设计一个复数类

不知道是不是 ～

//复数类。

public class Complex

{

private double real,im; //实部，虚部

public Complex(double real, double im) //构造方法

{

this.real = real;

this.im = im;

}

public Complex(double real) //构造方法重载

{

this(real,0);

}

public Complex()

{

this(0,0);

}

public Complex(Complex c) //拷贝构造方法

{

this(c.real,c.im);

}

public boolean equals(Complex c) //比较两个对象是否相等

{

return this.real==c.real this.im==c.im;

}

public String toString()

{

return "("+this.real+"+"+this.im+"i)";

}

public void add(Complex c) //两个对象相加

{ //改变当前对象，没有返回新对象

this.real += c.real;

this.im += c.im;

}

public Complex plus(Complex c) //两个对象相加，与add()方法参数一样不能重载

{ //返回新创建对象，没有改变当前对象

return new Complex(this.real+c.real, this.im+c.im);

}

public void subtract(Complex c) //两个对象相减

{ //改变当前对象，没有返回新对象

this.real -= c.real;

this.im -= c.im;

}

public Complex minus(Complex c) //两个对象相减，与subtract()方法参数一样不能重载

{ //返回新创建的对象，没有改变当前对象

return new Complex(this.real-c.real, this.im-c.im);

}

}

class Complex__ex

{

public static void main(String args[])

{

Complex a = new Complex(1,2);

Complex b = new Complex(3,5);

Complex c = a.plus(b); //返回新创建对象

System.out.println(a+" + "+b+" = "+c);

}

}

/*

程序运行结果如下：

(1.0+2.0i) + (3.0+5.0i) = (40.0+7.0i)

*/

java 定义一个复数类

//余下的自己完成

import java.util.Scanner;

public class ComplexOperation {

static Scanner s = new Scanner(System.in);

public Complex option(Complex c1, Complex c2, String opch) {

Complex r = new Complex();

if("+".equals(opch)) {

r.setReaPart(c1.getReaPart() + c2.getReaPart());

r.setVirPart(c1.getVirPart() + c2.getVirPart());

} else if("-".equals(opch)) {

r.setReaPart(c1.getReaPart() - c2.getReaPart());

r.setVirPart(c1.getVirPart() - c2.getVirPart());

}

return r;

}

public Complex read(String info) {

System.out.println(info);

Complex c = new Complex();

System.out.print("实部: ");

c.setReaPart(s.nextInt());

System.out.print("虚部: ");

c.setVirPart(s.nextInt());

return c;

}

public static void main(String[] args) {

// ComplexOperation co = new ComplexOperation();

// Complex c1 = co.read("输入复数一");

// Complex c2 = co.read("输入复数二");

// System.out.print("输入运算符: ");

// String opch = s.next();

// System.out.print("结果是: " + co.option(c1, c2, opch));

// double d = 2.36;

// int len = 1;

// String format = "%" + len + ".2f";

// System.out.printf(format, d);

}

}

class Complex{

private int reaPart;

private int virPart;

public Complex() {

}

public Complex(int r, int v) {

this.reaPart = r;

this.virPart = v;

}

public String toString() {

int tag = this.getVirPart();

if(tag == 0) {

return getReaPart() + "";

} else if(tag 0) {

return getReaPart() + "+" + getVirPart() + "i";

} else {

return getReaPart() + "-" + -getVirPart() + "i";

}

}

public int getReaPart() {

return reaPart;

}

public void setReaPart(int reaPart) {

this.reaPart = reaPart;

}

public int getVirPart() {

return virPart;

}

public void setVirPart(int virPart) {

this.virPart = virPart;

}

}

用java编写一个复数类，包含实部和虚部属性，还有复数相加、相减以及复数的求模、输出复数字符串”a+bi”

import java.util.*;

public class ComplexTest{

static class ComplexNumber{

private double real,image;

public ComplexNumber(){

this(0.0,0.0);}

public ComplexNumber(double a,double b){

real=a;image=b;

}

public ComplexNumber add(ComplexNumber x){

return new ComplexNumber(real+x.real,image+x.image);}

public ComplexNumber sub(ComplexNumber x){

return new ComplexNumber(real-x.real,image-x.image); }

public ComplexNumber mul(ComplexNumber x){

return new ComplexNumber(real*x.real-image*x.image,real*x.image+image*x.real);}

public ComplexNumber div(ComplexNumber x){

if(x.real==0x.image==0){

System.out.println("无法进行除法！");

return new ComplexNumber();}

else return new ComplexNumber((real*x.real+image*x.image)/(x.real*x.real+x.image*x.image)

,(image*x.real-real*x.image)/(x.real*x.real+x.image*x.image));}

public double getReal (){return real;}

public double getImage (){return image;}

public void show(){System.out.println(this.toString());}

public String toString(){

if(image0)return ""+real+image+"i";

else return ""+real+"+"+image+"i";

}

}

static class Test{

public Test(){

Scanner sr=new Scanner(System.in);

ComplexNumber a,b,c;

try{System.out.println("请输入第一个实部和虚部：");

a=new ComplexNumber(sr.nextDouble(),sr.nextDouble());

System.out.println("请输入第二个实部和虚部：");

b=new ComplexNumber(sr.nextDouble(),sr.nextDouble());

System.out.print("第一个复数：");a.show();

System.out.print("第二个复数：");b.show();

c=a.add(b);

System.out.print("两个复数的和：");c.show();

c=a.sub(b);

System.out.print("两个复数的差：");c.show();

c=a.mul(b);

System.out.print("两个复数的积：");c.show();

c=a.div(b);

System.out.print("两个复数的商：");c.show();

}

catch(InputMismatchException e){

System.out.println("输入有误！");}

}

}

public static void main(String[] args){

new Test();

}

}

用Java语言定义复数类Complex，必须满足如下要求：

public class Complex{

public int RealPart;

public int ImaginPart;

public Complex(){

this.RealPart = 0;

this.ImaginPart = 0;

}

public Complex(int r, int i){

this.RealPart = r;

this.ImaginPart = i

}

public Complex complexAdd(Complex a){

this.RealPart += a.RealPart;

this.ImaginPart += a.ImaginPart;

//这里返回什么？复数值是指哪个？还是复数对象？没有说清楚。我这里返回复数对象。

return this;

}

public String ToString(){

return ""+this.RealPart + this.ImaginPart;//return "" + 1 + 2 = "12";不知道这里要求是不是这样。有些话写的我没法理解。你的a + bi是个啥？如果是返回实数和虚数的和就给 1 + 2的部分加上括号。

}

}

用java 编写一个复数类

public class Complex {

protected int a;

protected int b;

public Complex(int a, int b) {

this.a = a;

this.b = b;

}

public String toString() {

return this.a + " + " + this.b + "i";

}

public static Complex addition(Complex complex1, Complex complex2) {

int a = complex1.a + complex2.a;

int b = complex1.b + complex2.b;

return new Complex(a, b);

}

public static Complex subtract(Complex complex1, Complex complex2) {

int a = complex1.a - complex2.a;

int b = complex1.b - complex2.b;

return new Complex(a, b);

}

public static Complex multiplication(Complex complex1, Complex complex2) {

int a = complex1.a * complex2.a - complex1.b * complex2.b;

int b = complex1.b * complex2.a + complex1.a * complex2.b;

return new Complex(a, b);

}

public static Complex division(Complex complex1, Complex complex2) throws Exception {

if (complex2.a == 0) {

throw new Exception("complex2.a is 0");

}

if (complex2.b == 0) {

throw new Exception("complex2.b is 0");

}

int a = (complex1.a * complex2.a + complex1.b * complex2.b) / (complex2.a * complex2.a + complex2.b * complex2.b);

int b = (complex1.b * complex2.a - complex1.a * complex2.b) / (complex2.a * complex2.a + complex2.b * complex2.b);

return new Complex(a, b);

}

}

//测试用的类

public class ComplexTest {

public static void main(String[] args) throws Exception{

// TODO Auto-generated method stub

Complex complex1 = new Complex(1, 2);

Complex complex2 = new Complex(3, 4);

System.out.println(complex1 + " + " + complex2 + " = " + Complex.addition(complex1, complex2));

System.out.println(complex1 + " - " + complex2 + " = " + Complex.subtract(complex1, complex2));

System.out.println(complex1 + " x " + complex2 + " = " + Complex.multiplication(complex1, complex2));

System.out.println(complex1 + " / " + complex2 + " = " + Complex.division(complex1, complex2));

}

}

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