Problem #4: (20 pts A library includes a list of books and has many copies of every book. Assume having an array named bookstore. Each element in the array represents a book and contains the number of copies of that book (each book code is recognized by the array index). For example, if the array is A 500 13 123 0 15 17 A[0)-500 means the book with code 0 has 500 copies A[1]-13 means the book with code I has 13 copies, and so on. a) Write a method boolean borrow (intl Aint bookIndex) that takes an array of integers A and a book's code then decreases the number of copies of that book by 1 (if there are available copies). The method returns true if the book is successfully borrowed. If there are no available copies (ie value is zero), the method returns false. b) Write a program in which you create an array of size 6 and fill it with numbers of your choice (you can use the shorthand array initialization). Assume all inputs are positive (do NOT check them in your program) Your program that asks the user to enter the book code (a positive integer), then invokes the above method. Check sample run below. For example, if the array is A (declared above)