Write a class encapsulating the concept of student grades on a test assuming student grades are composed of a list of integers between 0 and 100 (instance variable is an array of integers). Write the following methods: A constructor with just one parameter, the number of students; all grades can be randomly generated Accessor, mutator, toString and equals methods A methods returning an array of the grades sorted in ascending order (adapt the selection sort or insertion sort from the textbook). A method returning the highest grade A method returning the average grade A method returning the median grade (Hint: The median of an grade will be located in the middle of the sorted array of grades) A method returning the mode (The grade that occurs most often.) (Hint create an array of counters; count how many times each grade occurs; then pick the maximum in the array of counters; the array index is the mode.) Write a client class to test all the methods in your class. Do not use any Java Built-In classes like Arrays(sorting, comparing, etc.)