In this assignment you will be writing multiple methods that work with arrays. These methods will perform specific functions and, in most cases, return results. Your class should be named Grades.

Your program will have the following methods:

public static int readGrades$()$

public static int sum$($int$[]$ arr$)$

public static int sum$($int$[]$ arr, int firstIndex, int lastIndex$)$

public static double average$($int$[]$ arr$)$

public static int maxValue$($int$[]$ arr$)$

public static int maxValue$($int$[]$ arr, int firstIndex, int lastIndex$)$

public static int indexOfFirstMaxValue$($int$[]$ arr$)$

public static int minValue$($int$[]$ arr$)$

public static int minValue$($int$[]$ arr, int firstIndex, int lastIndex$)$

public static int indexOfFirstMinValue$($int$[]$ arr$)$

public static int numberOfBelowAverageElements$($int$[]$ arr$)$

public static int numberOfAboveAverageElements$($int$[]$ arr$)$

public static void rotateElements$($int$[]$ arr$)$

public static void rotateElements$($int$[]$ arr, int rotationCount$)$

public static void reverseArray$($int$[]$ arr$)$

public static void main$($String$[]$ args$)$ For example, if the input is:

$2575-1$

$5102030405060708090100-1$

$19151433764688786979757372-1$

$-1$

The output will be:

Enter a grade :

Enter a grade :

Enter a grade :

Number Of Grades $=2$

Maximum Exam Grade $=75$

Minimum Exam Grade $=25$

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Number Of Grades $=11$

Maximum Exam Grade $=100$

Minimum Exam Grade $=5$

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Enter a grade :

Number Of Grades $=13$

Maximum Exam Grade $=88$

Minimum Exam Grade $=14$

Enter a grade :