Programming using Java

Can anyone please help me with this?

Exercise 1

Write a program to read n grades from the input file input.txt and store them in an array. Your program must print the grades sorted in ascending order. Program must calculate and print the mean and the standard deviation of the grades.

Note:

Use Scanner class to read n and the grades from input.txt file

Mean is the average of all the grades

Standard deviation is given by the formula that is given below.

Where is the mean, N is the number of grades in the array and x_i is the i^th grade.

Hint: You can use Arrays.sort(arr) to sort the array by name arr.

Sample input.txt (The value on first line indicates the number of grades):

5

65.75 68.25 85.50 88.35 70.00

Sample output:

Printing grades in sorted order

65.75 68.25 70.0 85.5 88.35

Printing avergae and standard deviation

Ave = 75.57000000000001

SDev = 10.52346188285965