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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. public class Main {
  9.  
  10.     public static void main(String[] args) {
  11.         Student[] students = new Student[5];
  12.         P p = new P();
  13.  
  14.         students[0] = new Student("Andrey","Kosyak","in-73");
  15.         students[1] = new Student("Daniil","Shilov","in-73");
  16.         students[2] = new Student("Alexandr","Grinenko","in-73");
  17.         students[3] = new Student("Yuriy","Svityuk","in-73");
  18.         students[4] = new Student("Maxim","Mazhuga","in-73");
  19.  
  20.  
  21.         for(int i = 0; i < students.length; i++){
  22.             p.rint("" + students[i].getId());
  23.             p.rint(" " + students[i].getName());
  24.             p.rint(" " + students[i].getSurname());
  25.             p.rint(" " + students[i].getGroup());
  26.  
  27.             /*for(int j = 0; j < students.length; j++){
  28.                 p.rint("" + students[i].subjects[j].getNameSubject());
  29.                 p.rint(" " + students[i].subjects[j].getMark());
  30.                 p.rint(" " + students[i].subjects[j].check());
  31.             }*/ // как получить эти элементы чтобы вывести 
  32.  
  33.             p.rint(" " + students[i].getAvarageMark());
  34.             if(students[i].getAvarageMark() >= 4.0 && students[i].getAvarageMark() <= 4.9){
  35.                 p.rint(" obichnaya stependiya");
  36.             }
  37.             else if(students[i].getAvarageMark() == 5.0){
  38.                 p.rint("pidvishena");
  39.             }
  40.             p.rintln("");
  41.         }
  42.  
  43.     }
  44. }
  45.  
  46. public class Student {
  47.     private int id;
  48.     private static int nextId = 1;
  49.     private String name;
  50.     private String surname;
  51.     private String group;
  52.     private Subject [] subjects;
  53.  
  54.     //getters
  55.     public int getId(){
  56.         return id;
  57.     }
  58.     public int getNextId(){
  59.         return nextId;
  60.     }
  61.     public String getName(){
  62.         return name;
  63.     }
  64.     public String getSurname(){
  65.         return surname;
  66.     }
  67.     public String getGroup(){
  68.         return group;
  69.     }
  70.     public Subject[] getSubjects(){
  71.         return subjects;
  72.     }
  73.     public float getAvarageMark(){
  74.         float avg = 0;
  75.         for(int i = 0; i < 5; i++){
  76.             avg += subjects[i].getMark();
  77.         }
  78.         return avg / 5;
  79.     }
  80.  
  81.  
  82.  
  83.     //setters
  84.     public void setId(int id){
  85.         this.id=id;
  86.     }
  87.     public void setNextId(int nextId){
  88.         this.nextId=nextId;
  89.     }
  90.     public void setName(String name){
  91.         this.name=name;
  92.     }
  93.     public void setSurname(String surname){
  94.         this.surname=surname;
  95.     }
  96.     public void setGroup(String group){
  97.         this.group=group;
  98.     }
  99.     public void setSubject(Subject[] subjects) {
  100.         this.subjects = subjects;
  101.     }
  102.  
  103.     //constructor
  104.     public Student(String name, String surname, String group){
  105.         this.id = nextId++;
  106.         this.name = name;
  107.         this.surname = surname;
  108.         this.group = group;
  109.         this.subjects = new Subject[5];
  110.         for(int i = 0; i < this.subjects.length; i++){
  111.             this.subjects[i] = new Subject(i);
  112.         }
  113.     }
  114. }
  115. public class Subject {
  116.     private String nameSubject;
  117.     private float mark;
  118.     private boolean passed;
  119.  
  120.     private String[] nameSubjects = new String[]{"Mathematics", "Physics", "Computer science", "English", "Biology"};
  121.  
  122.     //getters
  123.     public String getNameSubject(){
  124.         return nameSubject;
  125.     }
  126.     public float getMark(){
  127.         return mark;
  128.     }
  129.  
  130.     //constructor
  131.     public Subject(int i){
  132.         this.nameSubject = nameSubjects[i];
  133.         this.mark = (float)(Math.random()*(5-1))+1;
  134.     }
  135.  
  136.  
  137.     public void check(){
  138.         if(mark > 2 && mark <= 5){
  139.             passed = true;
  140.         }
  141.     }
  142. }
  143.  
  144. public class P {
  145.     public static void rint(String str){
  146.         System.out.print(str);
  147.     }
  148.  
  149.     public static void rintln(String str){
  150.         System.out.println(str);
  151.     }
  152. }
  153.  
  154. public class Utils {
  155.     public static int getTheBestSubject(Student[] student){
  156.         Subject[] subjects;
  157.         double[] max_mark = new double[5];
  158.         for(int i = 0; i < 5; i++){
  159.             subjects = student[i].getSubjects();
  160.             for(int j = 0; j < 5; j++){
  161.                 max_mark[i] = subjects[j].getMark();
  162.             }
  163.         }
  164.  
  165.         double avarage = max_mark[0]/5;
  166.         int index = 0;
  167.         for(int i = 0; i < 5; i++){
  168.             if(max_mark[i]/5 > avarage){
  169.                 avarage = max_mark[i]/5;
  170.                 index = i;
  171.             }
  172.         }
  173.         return index;
  174.     }
  175.  
  176.     public static int getTheBestStudent(Student[] student){
  177.         double avarageMark = student[0].getAvarageMark();
  178.         int indexOfStudent = 0;
  179.         for(int i = 0; i < 5; i++){
  180.             if(student[i].getAvarageMark() > avarageMark){
  181.                 avarageMark = student[i].getAvarageMark();
  182.                 indexOfStudent = i;
  183.             }
  184.         }
  185.         return indexOfStudent; //вернёт индекс самого лучшего студента
  186.     }
  187. }
  188.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
Main.java:46: error: class Student is public, should be declared in a file named Student.java
public class Student {
       ^
Main.java:115: error: class Subject is public, should be declared in a file named Subject.java
public class Subject {
       ^
Main.java:144: error: class P is public, should be declared in a file named P.java
public class P {
       ^
Main.java:154: error: class Utils is public, should be declared in a file named Utils.java
public class Utils {
       ^
4 errors
stdout
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Standard output is empty
https://ideone.com/qGpaqE
language:
Java (HotSpot 12)
created:
5 years ago
visibility:
public

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