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/*(1)属性:复数包含实部和虚部两个部分,
double RealPart;复数的实部
double ImagePart;复数的虚部
getRealPart():返回复数的实部
getImagePart();返回复数的虚部
setRealPart():设置复数的实部
setImagePart();设置复数的虚部
输出形式:a+bi
(2)方法:
①定义构造函数
public Complex()
public Complex(double R,double I)
②定义公有方法:加减乘除
Complex ComplexAdd(Complex a):实现复数加法
Complex ComplexSub(Complex a):实现复数减法
Complex ComplexMulti(Complex a):实现复数乘法
Complex ComplexDiv(Complex a):实现复数除法
③Override Object
public String toString():将计算结果转化为字符串形式并输出
*/
public class Complex {
private double RealPart;//复数的实部
private double ImagePart;//复数的虚部
public Complex() {}
public Complex(double R,double I){
setRealPart(R);
setImagePart(I);
}
public void setRealPart(double R){
RealPart=R;//设置复数的实部
}
public void setImagePart(double I){
ImagePart=I;//设置复数的虚部
}
public double getRealPart(){
return RealPart;//返回复数的实部
}
public double getImagePart(){
return ImagePart;//返回复数的虚部
}
Complex ComplexAdd(Complex a) {
Complex New =new Complex();
New.RealPart=this.RealPart+a.RealPart;
New.ImagePart=this.ImagePart+a.ImagePart;
return New;
}
Complex ComplexSub(Complex a){
Complex New =new Complex();
New.RealPart=this.RealPart-a.RealPart;
New.ImagePart=this.ImagePart-a.ImagePart;
return New;
}
Complex ComplexMulti(Complex a){
Complex New =new Complex();
New.RealPart=this.RealPart*a.RealPart-this.ImagePart*a.ImagePart;
New.ImagePart=this.ImagePart*a.RealPart+this.RealPart*a.ImagePart;
return New;
}
Complex ComplexDiv(Complex a){
double sum=a.ImagePart*a.ImagePart+a.RealPart*a.RealPart;
Complex b = new Complex(a.getRealPart()/sum, -a.getImagePart()/sum);
return ComplexMulti(b);
}
@Override
public String toString() {
if(ImagePart>0.0)
return RealPart+"+"+ImagePart+"i";
else if(ImagePart==0.0)
return RealPart+" ";
else
return RealPart+""+ImagePart+"i";
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Complex complex = (Complex) o;
return Double.compare(complex.getRealPart(), getRealPart()) == 0 && Double.compare(complex.getImagePart(), getImagePart()) == 0;
}
}
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