HELPP PLEASE
I need to write a program that does the following: store the quiz in my program, using a 2D array, include methods to calculate the average grade for each student + quiz, and write the calculated values to an output file.
Finally, the program should calculate the overall average and add it to the output file.
My program must include calls to these methods, as part of the task of reading in and processing the quiz dataset. I can use as many helper methods as I wish.
Detailed Description
Assume that 2D arrays are of the same length).
Must include the following methods
1. Write a method to read in the quiz scores dataset from a file. This method has a single
parameter, the TextFile file pointer variable that refers to the input data file. This method returns a 2D array of ints that holds the dataset, with rows representing students and columns representing quizzes. Note that the first two entries in the input file are integers specifying the number of students and the number of quizzes. The remainder of the file consists of the quiz scores, with the scores for each student grouped together as consecutive file entries.
2. Write a recursive method that computes and returns the sum of a 1D array of ints. The method has two parameters. The first is an integer specifying an initial index value in the array, and the other is the 1D array of ints.
3. Write a recursive method that computes and returns the sum of all the entries in a 2D array of ints. The method has two parameters, an integer specifying an index value for a row of the array, and the 2D array of ints. This method should compute each row sum by calling the method for the sum of a 1D array of ints.
4. Write a method that computes and returns the double-valued mean (the average) for a row
of a 2D array of ints. The row number and the 2D array are parameters.
5. Write a method that computes and returns a 2D array of ints that is the transpose of its single parameter, a 2D array of ints. Use this method to re-arrange the dataset so that rows correspond to quizzes, rather than students. Then you may use the same method to calculate a quiz average or a student average.
File Format: The sample input files for this assignment follow a standard format in which the first two entries in the file specify the number of students for which grades are included, and the number of quiz scores for each student. If N is the number of students and Q is the number of quizzes, the remainder of the file consists of N groups of Q values which are the quiz scores for one student. Within each group of Q values, the scores are in the same order: quiz1, quiz2, quiz3, ? There are no characters in the file other than integer numbers, spaces and new lines. Each quiz score is an integer value ranging from 0 to 10. Here are a few lines from the beginning of a sample input file.
Note that the supplied files do not contain comments.
11 // the number of students
4 // the number of quiz scores for each student
9 3 7 1 // quiz scores for the first student
2 8 10 10 // scores for the second student
7 0 9 9 // quiz1, quiz2, quiz3, quiz4 for the third student
Sample datasets:
25
5
10 7 10 7 6
7 9 6 9 5
6 7 7 7 5
7 8 9 10 9
8 8 9 9 9
8 4 6 8 8
4 9 6 8 5
5 3 5 6 9
9 6 8 9 9
7 8 1 3 7
6 7 6 6 3
6 6 10 10 7
8 6 7 8 7
9 7 6 5 6
10 10 8 7 10
10 10 8 8 10
8 6 6 4 7
7 4 9 8 5
5 5 4 6 9
5 6 6 7 8
9 10 8 9 8
10 9 5 2 3
7 8 9 8 6
6 6 7 7 10
9 8 10 10 9
8
3
4 5 9
5 9 5
9 10 7
8 9 9
5 7 7
7 7 5
3 7 5
7 8 8
11
9
7 9 8 9 5 5 6 9 7
4 9 8 7 6 5 4 8 8
8 8 8 4 7 9 10 7 8
9 10 9 9 9 10 9 8 10
10 6 8 6 5 8 6 9 9
5 6 6 5 6 7 6 7 5
8 10 4 9 10 9 8 5 4
5 8 7 5 6 7 7 9 5
8 9 10 9 7 8 8 5 7
8 9 7 7 7 5 9 6 7
9 7 10 4 7 10 9 9 5
I have no idea where to start, could someone please help me out?
I would really appreciate it, even if you can give me some pointers, especially with the 2D arrays.
Thanks
