The class Gradebook2D will produce the same output of the class Gradebook1D, but the implementation will be slightly different. You will need to use only two arrays: One array of type int to store all the ID's (just like the previous class). One two-dimensional array of type double to store all the scores for all quizzes. Example: Assume there are 10 students in the class, then the id array will have 10 indices. 3 4 6. 132 451 854 523 153 588 351 856 142 445 Each quiz array will store in the index that corresponds to the student the score for the quiz. 1. 2 5 8. 9. 100.0 90.0 85.0 92.0 75.0 93.0 98.0 100.0 95.0 87.0 90.0 87.0 92.0 95.0 78.0 84.0 88.0 96.0 100.0 95.0 100.0 98.0 85.0 98.0 87.0 89.0 92.0 88.0 92.0 97.0 Student with ID 153, at index 4, has taken all three quizzes with scores 75.0 (quiz 1), 78.0 (quiz 2) and 87.0 (quiz 3). Note: The two dimensional array can be represented also with the rows being the students and the columns being the quizzes. How to proceed: 1. Declare the number of quizzes as a constant, outside the main method. (Recall that identifiers for constants are all in CAPITAL_LETTERS.) 2. Ask the user how many students are in the class, so you can set the length of all the arrays. 3. Allocate 2 arrays, one one-dimensional and the other two-dimensional, that will store the data. 4. Use two nested FOR loops to retrieve and store all the data. 5. Use another two nested FOR loops to a. Output the final score for each student. b. Keep track of all scores to later compute the average for the class. 6. Calculate and Output the average for the class. Format all floating-point numbers to 2 decimal places.
The class Gradebook2D will produce the same output of the class Gradebook1D, but the implementation will be slightly different. You will need to use only two arrays: One array of type int to store all the ID's (just like the previous class). One two-dimensional array of type double to store all the scores for all quizzes. Example: Assume there are 10 students in the class, then the id array will have 10 indices. 3 4 6. 132 451 854 523 153 588 351 856 142 445 Each quiz array will store in the index that corresponds to the student the score for the quiz. 1. 2 5 8. 9. 100.0 90.0 85.0 92.0 75.0 93.0 98.0 100.0 95.0 87.0 90.0 87.0 92.0 95.0 78.0 84.0 88.0 96.0 100.0 95.0 100.0 98.0 85.0 98.0 87.0 89.0 92.0 88.0 92.0 97.0 Student with ID 153, at index 4, has taken all three quizzes with scores 75.0 (quiz 1), 78.0 (quiz 2) and 87.0 (quiz 3). Note: The two dimensional array can be represented also with the rows being the students and the columns being the quizzes. How to proceed: 1. Declare the number of quizzes as a constant, outside the main method. (Recall that identifiers for constants are all in CAPITAL_LETTERS.) 2. Ask the user how many students are in the class, so you can set the length of all the arrays. 3. Allocate 2 arrays, one one-dimensional and the other two-dimensional, that will store the data. 4. Use two nested FOR loops to retrieve and store all the data. 5. Use another two nested FOR loops to a. Output the final score for each student. b. Keep track of all scores to later compute the average for the class. 6. Calculate and Output the average for the class. Format all floating-point numbers to 2 decimal places.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Java
Transcribed Image Text:The class Gradebook2D will produce the same output of the class Gradebook1D, but the implementation will
be slightly different.
You will need to use only two arrays:
One array of type int to store all the ID's (just like the previous class).
One two-dimensional array of type double to store all the scores for all quizzes.
Example: Assume there are 10 students in the class, then the id array will have 10 indices.
3
4
6.
132
451
854
523
153
588
351
856
142
445
Transcribed Image Text:Each quiz array will store in the index that corresponds to the student the score for the quiz.
1.
2
5
8.
9.
100.0
90.0
85.0
92.0
75.0
93.0
98.0
100.0
95.0
87.0
90.0
87.0
92.0
95.0
78.0
84.0
88.0
96.0
100.0
95.0
100.0
98.0
85.0
98.0
87.0
89.0
92.0
88.0
92.0
97.0
Student with ID 153, at index 4, has taken all three quizzes with scores 75.0 (quiz 1), 78.0 (quiz 2) and 87.0
(quiz 3).
Note: The two dimensional array can be represented also with the rows being the students and the columns
being the quizzes.
How to proceed:
1. Declare the number of quizzes as a constant, outside the main method. (Recall that identifiers for
constants are all in CAPITAL_LETTERS.)
2. Ask the user how many students are in the class, so you can set the length of all the arrays.
3. Allocate 2 arrays, one one-dimensional and the other two-dimensional, that will store the data.
4. Use two nested FOR loops to retrieve and store all the data.
5. Use another two nested FOR loops to
a. Output the final score for each student.
b. Keep track of all scores to later compute the average for the class.
6. Calculate and Output the average for the class.
Format all floating-point numbers to 2 decimal places.
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