mypolynomial.java

基本数据结构

package polynomialApp;
import concourseApp.MyConcourse;
import LinearLink.*;
public class Mypolynomial extends MyConcourse
{

    public Mypolynomial(double item) 
    {
		super(item);
		LinearLink set=new LinearLink(item);
	}
    public Mypolynomial plus(Mypolynomial a,Mypolynomial b)
    {
    	Mypolynomial c;int i,j,aLength,bLength;
    	aLength=a.getLength(a.getFirst());
    	bLength=b.getLength(b.getFirst());
    	double[] array1=new double[aLength];
    	System.arraycopy(a.getItemArray(), 0, array1, 0, aLength);
    	double[] array2=new double[bLength];
    	System.arraycopy(b.getItemArray(), 0, array1, 0, bLength);
    	double[] array3=new double[aLength*7];
    	for(i=0;i<aLength;i++)
    	{
    		array3[i]=array1[i]+array2[i];
    	}
    	c=this.intl(array3);
    	return c;
    }
    public Mypolynomial minus(Mypolynomial a,Mypolynomial b)
    {
    	Mypolynomial c;int i,j,aLength,bLength;
    	aLength=a.getLength(a.getFirst());
    	bLength=b.getLength(b.getFirst());
    	double[] array1=new double[aLength];
    	System.arraycopy(a.getItemArray(), 0, array1, 0, aLength);
    	double[] array2=new double[bLength];
    	System.arraycopy(b.getItemArray(), 0, array1, 0, bLength);
    	double[] array3=new double[aLength*7];
    	for(i=0;i<aLength;i++)
    	{
    		array3[i]=array1[i]-array2[i];
    	}
    	c=this.intl(array3);
    	return c;
    }
    public Mypolynomial multiply(Mypolynomial a,Mypolynomial b)
    {
    	Mypolynomial c;int i,j,l,k,aLength,bLength;
    	aLength=a.getLength(a.getFirst());
    	bLength=b.getLength(b.getFirst());
    	double[] array1=new double[aLength];
    	System.arraycopy(a.getItemArray(), 0, array1, 0, aLength);
    	double[] array2=new double[bLength];
    	System.arraycopy(b.getItemArray(), 0, array1, 0, bLength);
    	if(aLength>bLength){i=aLength;j=bLength;}
    	else{j=aLength;i=bLength;}
    	double[][] array3=new double[i*i][j*j];
    	for(k=0;k<i;k++)
    		for(l=0;l<j;l++)
    	    {
    		    array3[k][l+k]=array1[k]*array2[l];
    	    }
    	double[] array4=new double[j*j];
    	for(k=0;k<i*i;k++)
    		for(l=0;l<j;l++)
    	    {
    		    array4[k]+=array3[l][k];
    	    }
    	c=this.intl(array4);
    	return c;
    }
    public Mypolynomial cube(Mypolynomial a)
    {
    	Mypolynomial b=new Mypolynomial(0);
    	Mypolynomial c=new Mypolynomial(0);
        b=b.multiply(a, a);
        c=c.multiply(a, b);
    	return c;
    }
}