Index 10 out of bounds for length 10

Question

My objective is to "Read into array A 10 numbers from the keyboard. Determine the average of the elements of array A. Store in array B the difference of each element of array A and the average of all the elements in array A". However, as I tried to code this, I ended up dealing with an error whenever I enter the last element for Array A. Here is my source code:

import java.util.*;
public class PROJECT_8 {
 public static void main(String [] args) {
Scanner m = new Scanner(System.in);

double A[] = new double[10];
double B[] = new double[10];
int i, ctr = 1;
double sum = 0;

System.out.println("Enter 10 numbers: ");
for(i=0; i<A.length; i++)
{
  A[i] = m.nextDouble();
  sum+=A[i];
  A[i] = sum/ctr;
  ctr++;
}

for(i=1; i<A.length; i++)
{
  if(A[i] != A[0])
  {
    A[i] = A[0] - A[i];
    A[i] = B[i];
    A[0]+=1;
  }
}

System.out.println("Array A = " + A[i]);
System.out.println("Array B");
for(i=0; i<length; i++)
    System.out.println(B[i]);

  }
}

Here is the error I received:

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Index 10 out of bounds for length 10

I don't really understand the issue as I have already applied the "i=0" concept; even when I changed the i=1 by the second for loop, the issue still remained.

What alterations do I have to perform on the latter?

Thank you so much for your assistance and have a nice day.