need to fill in the comments given.

ArrayPractic e Java acticeTest 5eauthor jfiore 7 public class ArrayPractice t /* sets every item in All to initialValue / public static void initialize(int Al, int initialValue) ( return; s returns the average of the items in A * Be careful: All is an array of int and the method returns 13 14 15 16 17 18 19 double. What do we do to handle this? */ public static double average(int AII) f return 0.e; /s returns the number of tines that x appears in All/ public static int numoccurrences(int AIl, int x) return 0 23 24 25 26 /* returns the index of the first occurrence of * x in Al or -1 if x doesn't exist in AlI / public static int findlint AI, int x) f return -1: 29 30 31 32 /* Returns the index of the first occurrence of * item within the first n elements of At or -1 * if item is not among the first n elements of Al/ public static int findN(int All, int item, int n) f return -1; 37 /* returns the index of the last occurrence of * x in AI) or -1 if x doesn't exist in AIl / public static int findLast int All, int x) 41 return -1; /* returns the largest item found in A / public static int largest(int An) { 461 return -1