Array Exercises (In class). Create a project called ArrayTest and add statements to confirm each of the following tasks.

1. Create a class, Arrays, that constructs an array of a user-defined size and populates it with random 3-digit integers.
2. Add a toString() method to your class to return a String equivalent of the elements of the array,
3. Provide an accessor method that returns the minimum value of the array.
4. Provide an accessor method that returns the maximum value of the array.
5. Provide an accessor method that returns the average (arithmetic mean) of the elements in the array.

   

6. Provide an accessor method that returns the standard deviation of the elements in the array.

   

7. Provide the method, public void Shuffle() that shuffles the elements of the array.
8. Provide the method, public boolean contains(int n) that returns true if n is an element of the array, false otherwise.
9. Provide the method, public boolean containsDuplicates() that returns true if the array contains any duplicates, false otherwise.

Matrix (2D Array) Exercises

1. Instantiate a 2D int matrix, matA, having 3 rows and 3 columns and populate it with random single-digit integers.
2. Instantiate another 3 by 3 2D int matrix, matB, and initialize its contents to a known magic square.
3. Write and test the method, display(int[][] m), that displays the matrix argument in rectangular form.
4. Write and test the method, isMagicSquare(int[][] m), that returns true if the argument is a magic square, false otherwise.