import java.awt.image.DataBufferByte;
import java.text.DecimalFormat;
public class duioxiangshicheng {
 static void poiay(double[] A,int m,double[] B,int n,double[] R,int k){
  int i,j;
  for(i=0;i<k;i++){
  R[i]=0.0;
  }
  for(i=0;i<m;i++){
  for(j=0;j<n;j++){
   R[i+j]=A[i]+B[j];
  }
  }
 }
 public static void main(String[] args) {
 int i;
 double A[]={-4.0,5.0,2.0,-1.0,3.0,2.0};
 double B[]={-3.0,-2.0,1.0,3.0};
 double[] R=new double[9];
 DecimalFormat df=new DecimalFormat("0.0000000E000");
 poiay(A,6,B,4,R,9);
 System.out.println("多項式A*B的結(jié)果各項系數(shù)：");
 for(i=0;i<9;i++){
  System.out.println("R("+i+")="+df.format(R[i]));
 }
 }
}

/*輸出多項式A*B的結(jié)果各項系數(shù)：
R(0)=-7.0000000E000
R(1)=2.0000000E000
R(2)=-1.0000000E000
R(3)=-4.0000000E000
R(4)=0.0000000E000
R(5)=-1.0000000E000
R(6)=0.0000000E000
R(7)=3.0000000E000
R(8)=5.0000000E000*/