「java题目复数」编写一个类实现复数的运算java
本篇文章给大家谈谈java题目复数,以及编写一个类实现复数的运算java对应的知识点,希望对各位有所帮助,不要忘了收藏本站喔。
本文目录一览:
java 复数问题
1、首先Java中的数都是有符号的
2、所以,负数的话只需直接在数字前面加个负号(-)即可,如-5。
3、要开平方的话,请直接调用Math.sqrt(数值)方法即可。
4、当然,由于要开平方的数都必须是正数,所以,你可以直接调用Math.abs(d)方法求绝对值最为正确与简便,而不用写成-(-5),代码里也不提倡此写法。
有问题请继续提问,欢迎采纳,谢谢!
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:
Java作业两道题
1.public class Complex {
int realPart ;//实数
int imaginPart;//虚数
public Complex(){
this.imaginPart = 0;
this.realPart = 0;
}
public Complex(int r ,int i ){
this.realPart = r;
this.imaginPart = i;
}
public Complex complexAdd(Complex a){
this.imaginPart += a.imaginPart;
this.realPart += a.realPart;
return this;
}
public String toString() {
if(imaginPart = 0){
return this.realPart+"+"+this.imaginPart+"i";
}
return this.realPart+"-"+this.imaginPart+"i";
}
public static void main(String[] args) {
Complex c = new Complex(1,3);
c.complexAdd(c);
System.out.println(c.toString());
}
}
2.public class Rectangle {
double length;
double width;
public Rectangle(double length,double width){
this.length = length;
this.width = width;
}
public double getArea(){
double a = this.length * this.width;
System.out.println("矩形面积为"+a);
return a;
}
public static void main(String[] args) {
Rectangle r = new Rectangle(1.5, 1.5);
r.getArea();
}
}
3.public class Cone {
Rectangle rect;
double height;
public Cone(Rectangle rect,double height){
this.rect = rect;
this.height = height;
}
public double getVolume(){
double a = (this.rect.getArea() * this.height)/3;
System.out.println("四棱锥的体积为:"+a);
return a;
}
public static void main(String[] args) {
Cone c = new Cone(new Rectangle(1.5, 1.5), 5);
c.getVolume();
}
}
多注重自己学习。祝你成功。
一个Java题:设计一个程序用于计算复数的加法和减法运算。比如:1+2i与3+4i的和为4+6i
//他的思路是 建立一个对象Number
public Class Number{
//其中两个成员变量 RQ用来表示实数部分,IQ用来表示虚数部分
private float RQ;
private float IQ;
//用构造方法来分别对实数和虚数赋值
//然后用Add()方法进行计算,其中传入的参数为要加的那个部分(比如你题目中的3+4i)
//然后再进行字符串的拼接,就成了最终结果.
//其实他写的这个拼接形式只能做加法,其实判断一下结果是能够顺便做减法的
}
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