(1) 复数类Complex 的属性有:
RealPart : int型,代表复数的实数部分
ImaginPart : int型,代表复数的虚数部分
package applet;import java.applet.*;import java.awt.*;public class j_1 extends Applet{ Complex a,b,c,d,e,f; public void init() { a=new Complex(2,2); b=new Complex(3,4); c=new Complex(); d=new Complex(); e=new Complex(); f=new Complex(); } public void paint(Graphics g) { c=a.add(b); d=a.sub(b); e=a.mul(b); f=a.div(b); g.drawString("第一个复数:"+a.ToString(), 10, 50); g.drawString("第二个复数:"+b.ToString(), 10, 70); g.drawString("两复数之和:"+c.ToString(), 10, 90); g.drawString("两复数之差:"+d.ToString(), 10, 110); g.drawString("两复数相乘:"+e.ToString(), 10, 130); g.drawString("两复数相除:"+f.ToString(), 10, 150); }}class Complex{ public int realPart; public int imaginPart; Complex(int r,int i) {realPart=r;imaginPart=i;} Complex(){realPart=0;imaginPart=0;} Complex add(Complex a) { Complex temp=new Complex(); temp.realPart=realPart+a.realPart; temp.imaginPart=imaginPart+a.imaginPart; return temp; } Complex sub(Complex a) { Complex temp=new Complex(); temp.realPart=realPart-a.realPart; temp.imaginPart=imaginPart-a.imaginPart; return temp; } Complex mul(Complex a) { int r,i,ra,ia; r=this.realPart; i=this.imaginPart; ra=a.realPart; ia=a.imaginPart; Complex temp=new Complex(); temp.realPart=r*ra-i*ia; temp.imaginPart=i*ra+r*ia; return temp; } Complex div(Complex a) { double r,i,ra,ia; r=this.realPart; i=this.imaginPart; ra=a.realPart; ia=a.imaginPart; Complex temp=new Complex(); temp.realPart=(r*ra+i*ia)/(ra*ra+ia*ia);//这个地方应该如何修改,还是说只能改成把类成员变量改成double型数据才可以 temp.imaginPart=(i*ra-r*ia)/(ra*ra+ia*ia); return temp; } public String ToString() { if(imaginPart<0) { return (realPart+(imaginPart+"i")); } else return(realPart+"+"+imaginPart+"i"); }}
添加回答
举报
0/150
提交
取消