JAVA

Create a class FillArray.

Do your work in the main() method.

Prompt the user with "Enter a positive integer:".

Set up a Scanner to read from the keyboard and take in a positive integer arraySize from the user.

Allocate an array whose length is arraySize.

Loop over the elements of the array, assigning the value k*(k-1) to the array element at k (that is, fill array[k] with k*(k-1)).

Now loop over the array again, summing up all the elements of the array.

Print out the sum with "Sum = " and the sum

Also print out "Check = " and the value arraySize * (arraySize - 1) * (arraySize - 2) / 3

In order to pass tests, use the following format:

Enter a positive integer: Sum = <> Check = <>