java关于复数的模代码 java实现复数的加法

Java中输入一组复数，对这组复数按模长从小到大进行排序

import java.util.ArrayList;

import java.util.List;

import java.util.Scanner;

/**

 * @author young

 * @Description: TODO

 * @date 2016年5月21日下午5:03:16

 */

interface MyComparable {

public int myCompareTo(Complex c);

}

public class Complex implements MyComparable {

private double re;// 实部

private double im;// 虚部

private double mc;// 模长

public Complex() {

super();

}

public Complex(double re, double im) {

super();

this.re = re;

this.im = im;

}

public double getRe() {

return re;

}

public void setRe(double re) {

this.re = re;

}

public double getIm() {

return im;

}

public void setIm(double im) {

this.im = im;

}

//根据实部和虚部计算出复数的模长

public double getMod() {

return Double.valueOf(String.format("%.6f", Math.sqrt(this.re * this.re + this.im * this.im)));

}

public double getMc() {

return mc;

}

public void setMc(double mc) {

this.mc = mc;

}

@Override

//实现接口中的方法，根据模长来比较复数

public int myCompareTo(Complex c) {

// TODO Auto-generated method stub

if (this.mc  c.mc) {

return -1;

} else if (this.mc  c.mc) {

return 1;

} else {

return 0;

}

}

public String toString(){

return String.valueOf(this.re) + "+" + String.valueOf(this.im) + "i" + " =模长: " + this.getMod();

}

//测试结果

public static void main(String[] args) {

ListComplex lists = new ArrayListComplex();

double[] mod = new double[5];

Scanner scanner = new Scanner(System.in);

int number = 0;

double m ;

while(number  5){

Complex c = new Complex();

System.out.print("输入第["+ (number + 1) +"]个数的实部：");

c.setRe(scanner.nextDouble());

System.out.print("输入第["+ (number + 1) +"]个数的虚部：");

c.setIm(scanner.nextDouble());

m = c.getMod();

c.setMc(m);

mod[number] = m;

lists.add(c);

number++;

}

System.out.println("\n冒泡排序(从大到小): ");

for (int k = 0; k  mod.length - 1; k++) {

for (int j = k + 1; j  mod.length; j++) { // 升序把改成

if (mod[k]  mod[j]) {

double temp = mod[k];

mod[k] = mod[j];

mod[j] = temp;

}

}

}

//排序后输出

for(int i = 0; i  mod.length; i++){

for(int j = 0; j  lists.size(); j++){

if(mod[i] == lists.get(j).getMc()){

System.out.println(lists.get(j).toString());

}

}

}

}

}

相关问答

Q1: 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：

Q2: 求大师写一下Java代码源代码

package Project;

import java.util.Scanner;

public class Complex {

int x;

int y;

Complex(){

x=0;

y=0;

}

Complex(int i,int j){

x=i;

y=j;

}

//显示

public void showComp(){

if(y0){

System.out.print(x+"+"+y+"i"+'\t');

}

if(y0){

System.out.print(x+""+y+"i"+'\t');

}

if(y==0){

System.out.print(x+""+'\t');

}

}

//求和

public static Complex addComp(Complex C1,Complex C2){

Complex newComplex=new Complex();

newComplex.x=C1.x+C2.x;

newComplex.y=C1.y+C2.y;

System.out.println();

System.out.print("和为：");

return newComplex;

}

//求差

public static Complex subComp(Complex C1,Complex C2){

Complex newComplex=new Complex();

newComplex.x=C1.x-C2.x;

newComplex.y=C1.y-C2.y;

System.out.println();

System.out.print("差为：");

return newComplex;

}

//求积

public static Complex multiComp(Complex C1,Complex C2){

Complex newComplex=new Complex();

newComplex.x=C1.x*C2.x-C1.y*C2.y;

newComplex.y=C1.x*C2.y+C1.y*C2.x;

System.out.println();

System.out.print("积为：");

return newComplex;

}

//是否相等

public static boolean equalComp(Complex C1,Complex C2){

System.out.println();

System.out.print("是否相等：");

return ((C1.x==C2.x)(C1.y==C2.y));

}

public static void main(String[] args){

Scanner data=new Scanner(System.in);

int x=data.nextInt();

int y=data.nextInt();

int m=data.nextInt();

int n=data.nextInt();

Complex Comp1=new Complex(x,y);

Complex Comp2=new Complex(m,n);

data.close();

//显示

Comp1.showComp();

Comp2.showComp();

Complex.addComp(Comp1,Comp2).showComp(); //显示 和

Complex.subComp(Comp1, Comp2).showComp(); //显示 差

Complex.multiComp(Comp1, Comp2).showComp(); //显示 积

System.out.println( Complex.equalComp(Comp1, Comp2));

}

}

Q3: 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();

}

}

Q4: java中实现复数求模

publicclassComplexDemo{//main方法publicstaticvoidmain(String[]a){Complexb=newComplex(2,5);Complexc=newComplex(3,-4);System.out.println(b+"+"+c+"="+b.add(c));System.out.println(b+"-"+c+"="+b.minus(c));System.out.println(b+"*"+c+"="+b.multiply(c));System.out.println(b+"/"+c+"="+b.divide(c));}}//Complex类classComplex{privatedoublem;//实部privatedoublen;//虚部publicComplex(doublem,doublen){this.m=m;this.n=n;}//addpublicComplexadd(Complexc){returnnewComplex(m+c.m,n+c.n);}//minuspublicComplexminus(Complexc){returnnewComplex(m-c.m,n-c.n);}//multiplypublicComplexmultiply(Complexc){returnnewComplex(m*c.m-n*c.n,m*c.n+n*c.m);}//dividepublicComplexdivide(Complexc){doubled=Math.sqrt(c.m*c.m)+Math.sqrt(c.n*c.n);returnnewComplex((m*c.m+n*c.n)/d,Math.round((m*c.n-n*c.m)/d));}publicStringtoString(){Stringrtr_str="";if(n0)rtr_str="("+m+"+"+n+"i"+")";if(n==0)rtr_str="("+m+")";if(n0)rtr_str="("+m+n+"i"+")";returnrtr_str;}}

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