Hãy viết chương trình nhập các hệ số của đa thức P bậc n (0

package bai29;

import java.util.Scanner;

public class Main {

  public static int nhap(){

          Scanner input= new Scanner(System.in);

          boolean check= false;

          int n=0; while(!check){

               System.out.print(" ");

               try{

                    n= input.nextInt();

                    check= true;

               }catch(Exception e){

                    System.out.println("Ban phai nhap so! hay nhap lai...");

                    input.nextLine();

               }

         }

         return (n);

     }

  public static void horner(int a[], int n){

          int T=0,i,x;

          System.out.println("\n Nhap x= ");

          x= nhap();

          T= a[n];

          for(i=n ; i>0 ; i--){

              T= T*x + a[i-1];

          }

          System.out.println("Gia tri cua da thuc tinh theo cong thuc Horner la: "+T);

     }

  public static void inDaThuc(int a[], int n){

          int i;

          for(i=n ; i>0 ; i--){

               System.out.print(" "+a[i]+".x^"+i+" + ");

          }

          System.out.print(" "+a[0]);

     }

     public static void daoHam(int a[],int dh[], int n){

          int i;

          for(i=n ; i>0 ; i--){

               dh[i-1]= a[i]*i;

          }

          inDaThuc(dh,n-1);

     }

     public static void tongDaThuc(int a[], int n, int b[], int m){

          int i;

          System.out.println("\n Tong cua 2 da thuc A va B la: ");

          if(n>m){

               for(i=m ; i>=0 ; i--){

                    a[i]+=b[i];

               }

               inDaThuc(a,n);

          }

          else

          for(i=n ; i>=0 ; i--){

               b[i]+=a[i];

          }

          inDaThuc(b,m);

     }

  public static void main(String[] args) {

    int i;

          System.out.println("Nhap bac cua da thuc n= ");

          int n= nhap();

          int[] array= new int[n+1];

          for(i=n ; i>=0 ; i--){

               System.out.print("Nhap he so cua x^"+i+" = ");

               array[i]= nhap();

          }

          System.out.println("Da thuc A nhap vao la: ");

          inDaThuc(array, n);

          horner(array, n);

          //Tinh dao ham bac 1 int[] dh= new int[n+1]; daoHam(array,dh,n);

          //Tinh tong 2 da thuc

          System.out.println("\n Nhap bac cua da thuc m= ");

          int m= nhap();

          int[] array2= new int[m+1];

          for(i=m ; i>=0 ; i--){

               System.out.print("Nhap he so cua x^"+i+" = ");

               array2[i]= nhap();

          }

          System.out.println("Da thuc B nhap vao la: ");

          inDaThuc(array2, m);

          tongDaThuc(array, n, array2, m);

    }

}