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add the complete code for lab4

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dymik739 2023-05-20 18:01:28 +03:00
parent ec1d3841a6
commit ec087856b6
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labs/4/Group.java Normal file
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/*
* %W% %E% Dymik739
* Email: dymik739@109.86.70.81
*
* Copyright (C) 2023 FIOT Dev Team
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
import java.util.Arrays;
/**
* Group class defines a representation of a university group with students
* that can be used as a convenient structure to look at students' statistics.
*
* @version 0.1 20 May 2023
* @author Dymik739
*/
public class Group {
/**
* Main method which should be executed at the start of this application.
*
* @since 0.1
*/
public static void main() {
Student[] studentList = {
// name, results, motivation%, ability%, course№
new Student("Davie", 16.3, 93.5, 98.9, 5),
new Student("Terry", 99.4, 49.3, 73.2, 7),
new Student("Mark", 67.9, 15.5, 7.8, 4),
new Student("Rand", 85.5, 82.6, 99.9, 12),
new Student("Steve", 1.2, 99.8, 99.2, 1)
};
System.out.println("Original students array:");
printStudents(studentList);
Arrays.sort(studentList, (o1, o2) -> o1.getName().compareTo(o2.getName()));
System.out.println("\nArray, sorted by students' name:");
printStudents(studentList);
Arrays.sort(studentList, (o1, o2) ->
compareDouble(o2.getResults(), o1.getResults()));
System.out.println("\nArray, sorted by the reverse of students' " +
"score results:");
printStudents(studentList);
System.out.println("\nAs we can clearly see, " +
studentList[studentList.length-1].getName() + " with " +
studentList[studentList.length-1].getMotivationPercent() +
"% of motivation and " +
studentList[studentList.length-1].getLearningAbilitiesPercent() +
"% ability to learn will be the one who is kicked " +
"from this university, because such is our life.");
}
/**
* Outputs to stdout a given array of students in a fancy way.
*
* @param array array to print out
*/
private static void printStudents(Student[] array) {
for (Student s : array) {
System.out.println(s);
}
}
/**
* Compares numbers of type Double
*
* @param i1 first number
* @param i2 second number to compare
* @return if the first argument is greater, 1 is returned
* if the second argument is greater, -1 is returned
* if the arguments are equal, 0 is returned
*/
private static int compareDouble(double i1, double i2) {
if (i1 > i2) {
return 1;
} else if (i1 < i2) {
return -1;
} else {
return 0;
}
}
}

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/*
* %W% %E% Dymik739
* Email: dymik739@109.86.70.81
*
* Copyright (C) 2023 FIOT Dev Team
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
/**
* represents a student with generic terms and phrases to let programmers
* write more readable code.
*
* @author Dymik739
* @version 0.1
* @since 0.1
*/
public class Student {
/**
* name of the student
*/
private String name;
/**
* overall ranking the student gets after finishing all courses
*/
private double results;
/**
* a reasonable variable showing student motivation. The higher this
* number is, the better this student studies.
*/
private double motivationPercent;
/**
* general ability to learn which directly affects learning speed.
*/
private double learningAbilities;
/**
* shows the amount of subjects this student is studying.
*/
private int chosenCoursesAmount;
/**
* This constructor lets you create the Student class right away
*
* @param name the name of this student
* @param results starting point for the overall ranking score of this
* student
* @param motivationPercent this student motivation level. Higher values
* allow for more jobs taken consecutively.
* @param learningAbilities directly affect learning speed of this student
* @param chosenCoursesAmount amount of courses chosen by this student.
* Roughly shows the load being put on them
* @since 0.1
*/
public Student(String name, double results, double motivationPercent,
double learningAbilities, int chosenCoursesAmount) {
this.name = name;
this.results = results;
this.motivationPercent = motivationPercent;
this.learningAbilities = learningAbilities;
this.chosenCoursesAmount = chosenCoursesAmount;
}
/**
* This method allows you to print out the student object in a nice way.
*
* @since 0.1
*/
@Override
public String toString() {
return "Student(name = '" + this.name + "', results = " + this.results +
", motivationPercent = " + this.motivationPercent +
", learningAbilities = " + this.learningAbilities +
", chosenCoursesAmount = " + this.chosenCoursesAmount + ")";
}
/**
* Getter for the private name field of this class
*
* @return String containing this student's name
* @since 0.1
*/
public String getName() {
return this.name;
}
/**
* Getter for the private results field of this class
*
* @return double representing final score of the student
* @since 0.1
*/
public double getResults() {
return this.results;
}
/**
* Getter for the private motivationPercent field of this class.
*
* @return double representing strenght of this student's motivation to
* learn
* @since 0.1
*/
public double getMotivationPercent() {
return this.motivationPercent;
}
/**
* Getter for the private motivationPercent field of this class.
*
* @return double representing how quickly this student can learn
* @since 0.1
*/
public double getLearningAbilitiesPercent() {
return this.learningAbilities;
}
}