Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Bartleby Related Questions Icon
Related questions
bartleby
Concept explainers
Question
The goal for Lab06b is to use the provided Student class (attached in image) and create an array of Student objects that are stored in a School object(picture of main class attached). This program uses a Student class that is provided and shown below. The class is placed in its own separate file and should not be altered. This program sequence started with Lab06a. It is a reminder that it is the same Student file used by Lab06a. This lab will add data processing to the earlier Lab06a.
This program will continue with the Lab06b program that performs some data processing on the Student records. For this lab 10 Student objects need to be constructed and placed in a students array, which is stored in a School object. You actually did this already for Lab06a. You also need to complete the School constructor, addData method and toString Method, which were in Lab06a. Feel free to just copy them over. You need to complete three bubbleSort methods; one that sorts according to the student gpa., one for age and one for name.
Example output:
Laba
Tom 21 1.685
Ann 34 3.875
Bob 18 2.5
Jan 45 4.0
Joe 27 2.975
Sue 19 3.225
Jay 30 3.65
Meg 38 2.0
Art 40 3.999
Deb 35 2.125
Name:
Ann 34 3.875
Art 40 3.999
Bob 18 2.5
Deb 35 2.125
Jan 45 4.0
Jay 30 3.65
Joe 27 2.975
Meg 38 2.0
Sue 19 3.225
Tom 21 1.685
Age:
Bob 18 2.5
Sue 19 3.225
Tom 21 1.685
Joe 27 2.975
Jay 30 3.65
Ann 34 3.875
Deb 35 2.125
Meg 38 2.0
Art 40 3.999
Jan 45 4.0
GPA:
Tom 21 1.685 Meg 38 2.0 Deb 35 2.125 Bob 18 2.5 Joe 27 2.975 Sue 19 3.225 Jay 30 3.65 Ann 34 3.875 Art 40 3.999 Jan 45 4.0
Transcribed Image Text:1
AWNA
2
3
4
5
6
7
CHIENENGGANZE2222
8
9
10
11
12
13
14
15
16
17
18
19
20
21
23
24
25
26
27
// Student.java
// Used by the Lab06 and Lab07 Assignments.
public class Student
{
}
private String name;
private int age;
private double gpa;
public Student (String n, int a, double g)
{
}
name = n;
age = a;
gpa g;
=
public String getName() { return name; }
public int getAge() { return age; }
public double getGPA()
{ return gpa; }
}
public String toString()
{
String temp = name +
return temp;
+ age +
+ gpa + "\n";
![画像:1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 // Labe6bvst.java // This the Student Starting file for Lab06b. public class Lab86bvst { } public static void main (String[] args) { } System.out.println("Labe6bv100 by ***** your name goes here****"); int size = 10; School bhs = new School(size); System.out.println(bhs); bhs.bubbleSort1(); class School { System.out.println(bhs); bhs.bubbleSort2(); System.out.println(bhs); bhs.bubbleSort3(); System.out.println(bhs); private Student[] students; private int size; } /public School (int s) String[] names = {"Tom", "Ann", "Bob", "Jan", "Joe", "Sue", "Jay", "Meg", "Art", "Deb"}; int[] ages = {21, 34, 18, 45, 27, 19, 30, 38, 40, 35}; double[] gpas (1.685, 3.875, 2.5, 4.0, 2.975, 3.225, 3.65, 2.0, 3.999, 2.125}; } // Sorts by name // Sorts by gpa // Sorts by age public void addData(String[] names, int[] ages, double[] gpas) { students = new Student [10]; addData(names, ages, gpas); for (int i = 0; i <10; i++) { students [1] = new Student (names[i], ages[i], gpas[i]); } public String toString() { String output = ""; for (int i = 0; i < 10; i++) { output += students[i]; } return output; // Sorts by name public void bubbleSorti() { /* To Be Completed */ }](https://content.bartleby.com/qna-images/question/2711cc56-d6e8-4719-aa28-b183120c8097/e51c9f3e-c7d7-42af-ae7e-c8757c9f4804/48h9l1_thumbnail.png){kind=link}
Transcribed Image Text:1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
// Labe6bvst.java
// This the Student Starting file for Lab06b.
public class Lab86bvst
{
}
public static void main (String[] args)
{
}
System.out.println("Labe6bv100 by ***** your name goes here****");
int size = 10;
School bhs = new School(size);
System.out.println(bhs);
bhs.bubbleSort1();
class School
{
System.out.println(bhs);
bhs.bubbleSort2();
System.out.println(bhs);
bhs.bubbleSort3();
System.out.println(bhs);
private Student[] students;
private int size;
}
/public School (int s)
String[] names = {"Tom", "Ann", "Bob", "Jan", "Joe", "Sue", "Jay", "Meg", "Art", "Deb"};
int[] ages = {21, 34, 18, 45, 27, 19, 30, 38, 40, 35};
double[] gpas (1.685, 3.875, 2.5, 4.0, 2.975, 3.225, 3.65, 2.0, 3.999, 2.125};
}
// Sorts by name
// Sorts by gpa
// Sorts by age
public void addData(String[] names, int[] ages, double[] gpas)
{
students = new Student [10];
addData(names, ages, gpas);
for (int i = 0; i <10; i++)
{
students [1] = new Student (names[i], ages[i], gpas[i]);
}
public String toString()
{
String output = "";
for (int i = 0; i < 10; i++)
{
output += students[i];
}
return output;
// Sorts by name
public void bubbleSorti() { /* To Be Completed */ }
Expert Solution
Check MarkThis question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
bartleby
This is a popular solution
bartleby
Trending nowThis is a popular solution!
bartleby
Step by stepSolved in 2 steps with 1 images
Knowledge Booster
Background pattern image
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- A client with a completed main function is provided. The main function should not be modified. You must update the client by creating and implementing the various functions described below. readFile – Loads the parameter array with Billionaire objects. The data for each Billionaire is read from the given data file which is in CSV format (comma delimited - 1 line per record with fields separated by a comma.) The function should read each line from the file, pass the line read to the Billionaire class constructor and store the resulting object in the parameter array. The second parameter represents the maximum number of Billionaire objects that can be stored. displayAll - Displays a list of the Billionaires stored in the array. getRange – Determines the smallest wealth value and the largest wealth value within the array. These values are returned to the caller via reference parameters. getWealthiest – Returns the Billionaire within the array with the greatest wealth. getUS –...arrow_forwardwrite java programarrow_forwardA miniature robot designed to mimic the behavior of an ant is being tested to evaluate the robot’s ability to avoid a chemical repellant (the robot has a chemical sensor, and a control loop that makes the robot avoid moving in a direction that will result in the sensor detecting a chemical concentration above a certain limit). The x and y positions of the robot are measured with time, and the resulting data is saved to a file called data.txt which contains 3 columns: the time of the measurement (in seconds), the x position (in cm), and the y position (in cm). The first line of the file is a "header": it has a single integer that specifies how many lines of data follow. Write a C++ program called ant.cpp that reads files of this type (i.e., your program should work with another, but similar, file!) and then does the following: it asks for an X and Y position, and then prints to screen the time at which the ant robot was closest to this position. For example, if we wish to know when the...arrow_forward
- This assignment will give you practice with arrays and producing an external output file. You are going to create a program that processes an input file of data for particular DNA sequencer test. This particular DNA sequencer test is designed to take a sample of bacterial and generate a sequence of values for it, and then retest it at a time interval later to see if the DNA has or has not effectively changed. Your assignment is to create a program that will give the user a brief introduction, then allow the user to type in the name of the file to be analyzed, the name of the data file to generate, and then process the data to match the output that is shown below. This DNA test measures the various parts of the sequence and assigns them a letter. While the letters could be anything from A to Z, the only letters that matter for this test are the letters {A,B,C,D} all other letters can be ignored completely. A sample will be tested, given a length of time and then tested again. Each time...arrow_forwardNo written by hand solutionarrow_forwardWrite a program to draw a quiz score histogram. Your program shouldread data from a file. Each line of the file contains a number in the range0-10. Your program must count the number of occurrences of each scoreand then draw a vertical bar chart with a bar for each possible score (0-10) with a height corresponding to the count of that score. For example,if 15 students got an 8, then the height of the bar for 8 should be 15.Hint: Use a list that stores the count for each possible score. An examplehistogram is shown below: o o D D0 1 2 3 4 5 6 7 8 9 10arrow_forward
- IN PYTHON: Decrypting with ascii I have a file called 'dict.txt'. This file contains over 50,000 english words. One word from this file is used as a key (we do not know which one of course). Some have capital letters. I have another file called 'decrypt.txt' which is a file containing a string of numbers i must decrypt using a key found in the 'dict.txt'. This 'decrypt.txt' file message has length of 300. My question is, since i do not know which word (from the file with the 50,000+ words) is the key I must use to decrypt the other file, how do I write a function that: loops through all possible keys from 'dict.txt' to find the one that decrypts my file 'decrypt.txt' best? Somehow i must count how many 'words' are actual words to determine which key is best and then print my final decrypted message.arrow_forwardIf fopen cannot open the file (filename mistyped, file does not exist in the current directory (folder), or we have no permission to open the file, etc) then a.We know that there is a problem because the next fprintf fails b.fopen issues a standard matlab error explaining the problem c.The file will always be created if it does not exist and fopen always opens a file. It is the responsibility of the programmer to make sure that the file is indeed what he intended d. fopen returns -1 and we know there is a problem and fix itarrow_forwardJava Your program must read a file called personin.txt. Each line of the file will be a person's name, the time they arrived at the professor's office, and the amount of time they want to meet with the professor. These entries will be sorted by the time the person arrived. Your program must then print out a schedule for the day, printing each person's arrival, and printing when each person goes in to meet with the professor. You need to print the events in order of the time they happen. In other words, your output will be sorted by the arrival times and the times the person goes into the professor's office. In your output you need to print out a schedule. In the schedule, new students go to the end of the line. Whenever the professor is free, the professor will either meet with the first person in line, or meet with the first person in line if nobody is waiting. Assume no two people arrive at the same time. You should solve this problem using a stack and a queue. You can only...arrow_forward
- Suppose you are given a text file that contains the names of people. Every name in the file consists of a first name and last name. Unfortunately, the programmer that created the file of names did not guarantee that each name was on a single line of the file. Read this file of names and write them to a new text file sorted according to first name, one name per line. For example, if the input file contains Ed Marston Bob Jones Jeff Williams Fred Charles The output file should be Bob Jones Ed Marston Fred Charles Jeff Williams Use arrays to solve the problem.arrow_forwardP7arrow_forwardNeed help with writing the program creating two different class files (Instruction are attatched in the images). Please provide with ss of your code if possible.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Text book imageDatabase System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill EducationText book imageStarting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSONText book imageDigital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
- Text book imageC How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSONText book imageDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningText book imageProgrammable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Text book image
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Text book image
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Text book image
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
Text book image
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Text book image
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Text book image
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education