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java编写的复数加减乘除运算,用java编写加减乘除运算

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java中如何实现复数的加减?

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 编写一个可对复数进行加减运算的程序

1、real和image这两个field前面的static去掉。

2、public Complex() 这个构造器去掉,如果要接受输入的话,应该放到main方法里,这样这个类更清晰。

3、静态方法Complex_add和Complex_minus没指定返回值类型,应该返回的是Complex。另外方法名字首字母应小写。

4、参考这个:

1.运用java 编写一个复数类,有实部和虚部,并实现复数的加减乘除运算?

public class ComplexNumber {

/**

* @param args

*/

int shi,xu;//复数的实部和虚部

public ComplexNumber(int n,int ni){

shi = n;

xu = ni;

}

public void ComplexShow(){

String output = "";

output+=shi;

if(xu=0){

output+="+";

}

output+=xu;

output+="i";

System.out.println(output);

}

public void ComplexShow1(){//不要换行

String output = "";

output+=shi;

if(xu=0){

output+="+";

}

output+=xu;

output+="i";

System.out.print(output);

}

public static void ComplexAdd(ComplexNumber x1,ComplexNumber x2){//实现两个复数相加

ComplexNumber cn = new ComplexNumber(0, 0);//将两个复数相加等于cn

cn.shi = x1.shi + x2.shi;

cn.xu = x1.xu + x2.xu;

cn.ComplexShow();

}

public static void ComplexMinus(ComplexNumber x1,ComplexNumber x2){//实现两个复数相减,第一个数减第二个数

ComplexNumber cn = new ComplexNumber(0, 0);//将两个复数相加等于cn

cn.shi = x1.shi - x2.shi;

cn.xu = x1.xu - x2.xu;

cn.ComplexShow();

}

public static void ComplexMultiply(ComplexNumber x1,ComplexNumber x2){//实现两个复数相乘

ComplexNumber cn = new ComplexNumber(0, 0);//将两个复数相加等于cn

cn.shi = x1.shi * x2.shi - x1.xu * x2.xu;

cn.xu = x1.xu * x2.shi + x2.xu * x1.shi;

cn.ComplexShow();

}

public static void ComplexDivide(ComplexNumber x1,ComplexNumber x2){//实现两个复数相除,第一个数除以第二个数

ComplexNumber x2_gong = new ComplexNumber(x2.shi,0-x2.xu);//求被除数的共轭复数

ComplexNumber cn = new ComplexNumber(0, 0);//将两个复数相加等于cn

cn.shi = x1.shi * x2_gong.shi - x1.xu * x2_gong.xu;//x1/x2,求分子实部

cn.xu = x1.xu * x2_gong.shi + x2_gong.xu * x1.shi;//x1/x2,求分子虚部

int fenMu = x2.shi * x2.shi + x2.xu * x2.xu;

if(fenMu!=0){

System.out.print("(");

cn.ComplexShow1();

System.out.print(")");

System.out.println("/"+fenMu);

}

else

System.out.println("分母为零,无法相除");

}

public static void main(String[] args) {

// TODO Auto-generated method stub

ComplexNumber cn = new ComplexNumber(-1, -1);//初始化复数

cn.ComplexShow();//显示复数

ComplexNumber c1 = new ComplexNumber(-1, -1);

ComplexNumber c2 = new ComplexNumber(1, 1);

System.out.print("加:");

ComplexAdd(c1, c2);

System.out.print("减:");

ComplexMinus(c1, c2);

System.out.print("乘:");

ComplexMultiply(c1, c2);

System.out.print("除:");

ComplexDivide(c1, c2);//自己化简

}

}

java 中实现复数的加减

(1):具体代码(附注释)

复数类:

public class Complex {

private float shibu;

private float xubu;

Complex()

{this(0,0);

}

Complex(float shibu,float xubu){

this.shibu=shibu;

this.xubu=xubu;

}

public void Add(Complex p)

{

Complex result=new Complex();

result.shibu=this.shibu+p.shibu;

result.xubu=this.xubu+p.xubu;

System.out.print("加法结果为:"+result.shibu+"+"+result.xubu+"i");

}

public void Sub(Complex p)

{

Complex result=new Complex();

result.shibu=this.shibu-p.shibu;

result.xubu=this.xubu-p.xubu;

System.out.print("加法结果为:"+result.shibu+"+"+result.xubu+"i");

}

public void Mul(Complex p)

{

Complex result=new Complex();

result.shibu=this.shibu*p.shibu-this.xubu*p.xubu;

result.xubu=this.shibu*p.xubu+p.shibu*this.xubu;

System.out.print("乘法结果为:"+result.shibu+"+"+result.xubu+"i");

}

public static void main(String[] args) {

Complex fushu1=new Complex(1,2);

Complex fushu2=new Complex(3,4);

fushu1.Add(fushu2);

fushu1.Sub(fushu2);

fushu1.Mul(fushu2);

}

}

(2):提供一个例子:

源代码:

import java.io.*;

public class Book{

double sb;

double xb;

Book(double x,double y){

this.sb=x;

this.xb=y;

}

Book(){

}

public static void main(String args[]){

System.out.println("请输入数据:");

double a=0;

double b=0;

double c=0;

double d=0;

String s;

BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

System.out.println("请输入第一个复述的实部:");

try{

s = in.readLine();

a=Double.parseDouble(s);

}

catch(IOException e)

{ System.out.println("抛掷异常");}

System.out.println("请输入第一个复述的虚部:");

try{

s = in.readLine();

b =Double.parseDouble(s);

}

catch(IOException e)

{ System.out.println("抛掷异常");}

System.out.println("请输入第二个复述的实部:");

try{

s = in.readLine();

c =Double.parseDouble(s);

}

catch(IOException e)

{ System.out.println("抛掷异常");}

System.out.println("请输入第二个复述的虚部:");

try{

s = in.readLine();

d =Double.parseDouble(s);

}

catch(IOException e)

{ System.out.println("抛掷异常");}

Book h;

h=new Book(a,b);

Book j;

j=new Book(c,d);

System.out.println("您输入的一个数为:");

toString(h);

System.out.println("您输入的二个数为:");

toString(j);

Book k;

k=new Book();

char z='y';

do{

System.out.println("请选择您要进行的计算:");

System.out.println("1 :进行加法运算");

System.out.println("2 :进行减法运算");

System.out.println("3 :进行修改");

System.out.println("4 :进行乘法运算");

System.out.println("5 :进行除法运算");

System.out.println("6 :查看修改结果");

int i=0;

try{

i= Integer.parseInt(in.readLine());

}

catch(IOException e)

{ System.out.println("抛掷异常");}

switch(i)

{

case 1:

k.sb=jia(h.sb,j.sb);

k.xb=jia(h.xb,j.xb);

System.out.println("计算结果的实部为:"+k.sb);

System.out.println("计算结果的虚部为:"+k.xb);

toString(k);

break ;

case 2:

k.sb=jian(h.sb,j.sb);

k.xb=jian(h.xb,j.xb);

System.out.println("计算结果的实部为:"+k.sb);

System.out.println("计算结果的虚部为:"+k.xb);

toString(k);

break ;

case 3:

System.out.println("请输入您要修改哪个实数:");

int l=0;

try{

l= Integer.parseInt(in.readLine());

}

catch(IOException e)

{ System.out.println("抛掷异常");}

if(l==1)

{

h.xiugais(h);

h.xiugaix(h);

}

else

{

xiugais(j);

xiugaix(j);

}

break ;

case 4:

double f=0;

double e=0;

f=cheng(h.sb,j.sb)+cheng(h.xb,j.xb);

e=cheng(h.sb,j.xb)+cheng(h.xb,j.sb);

k.sb=(double)(Math.round(f*100)/100.0);

k.xb=(double)(Math.round(e*100)/100.0);

System.out.println("计算结果的实部为:"+k.sb);

System.out.println("计算结果的虚部为:"+k.xb);

toString(k);

break ;

case 5:

double chushu=cheng(j.sb,j.sb)-cheng(j.xb,-j.xb);

double beichushus=jian(cheng(h.sb,j.sb),cheng(h.xb,-j.xb));

double beichushux=jia(cheng(h.sb,-j.xb),cheng(h.xb,j.sb));

k.sb=chu(beichushus,chushu);

k.xb=chu(beichushux,chushu);

System.out.println("计算结果的实部为:"+k.sb);

System.out.println("计算结果的虚部为:"+k.xb);

toString(k);

break ;

case 6:

System.out.println("修改后的结果为:");

System.out.println("第一个复数:"+toString(h));

System.out.println("第二个复数:"+toString(j));

break ;

}

System.out.println("请问您是否还要继续 y/n:");

try{

z=(char)System.in.read();

System.in.skip(2); //忽略回车换行

}

catch(IOException e){}

} while(z=='y');

}

public static double gets(Book a){

return a.sb;

}

public static double getx(Book b){

return b.xb;

}

public static double xiugais(Book a)

{

BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

System.out.println("请输入您要修改的实部:");

double m=0;

try{

m= Double.parseDouble(in.readLine());

}

catch(IOException e)

{ System.out.println("抛掷异常");}

a.sb=m;

System.out.println("修改成功:");

return 0;

}

public static double xiugaix(Book b)

{

BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

System.out.println("请输入您要修改的虚部:");

double n=0;

try{

n= Double.parseDouble(in.readLine());

}

catch(IOException e)

{ System.out.println("抛掷异常");}

b.xb=n;

System.out.println("修改成功:");

return 0;

}

public static double jia(double a,double b)//

{

double c=0;

c=a+b;

System.out.println("加法成功:");

return c ;

}

public static double jian(double a,double b)

{

double c=0;

c=a-b;

System.out.println("减法成功:");

return c;

}

public static double cheng(double a,double b)

{

double c=0;

c=a*b;

System.out.println("乘法成功:");

return  c;

}

public static double chu(double a,double b)

{

double d=0;

double c=0;

d=a/b;

c=(double)(Math.round(d*100)/100.0);

System.out.println("除法成功:");

return c ;

}

public  static double toString(Book a){

System.out.println("结果为:"+a.sb+"+"+a.xb+"*i");

return 0;

}

}

(3)测试结果截图: