问我试着把两个系数不同且次数不同的多项式相加。

EN

public Polynomial add(Polynomial second)//add function
{
    for(int i=0;i<degree.length;i++)
    {                       
        for(int j=0;j<degree.length;j++)
        {
            if(this.degree[i]==second.degree[j])
            {
                this.coeff[i]=this.coeff[i]+second.coeff[j];
            }
        }
    }

    Polynomial result=new Polynomial();
    result=this;
    return result;

}

poly 1:-4x1+6x4+7x3
poly 2:-6x1+2x2
expected is 10x1+2x2+7x3+6x4
actual is 10x1+6x4+7x3