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  1.  
  2. public class Main {
  3.     public static void main(String[] args) {
  4.         Icecream[] icecreams = new Icecream[4];
  5.         icecreams[0] = new Icecream("Шоколадное", true, 5);
  6.         icecreams[1] = new Icecream("Сливочное", false);
  7.         icecreams[2] = new Icecream();
  8.         icecreams[3] = new Icecream(icecreams[0]);
  9.  
  10.         for (Icecream icecream : icecreams) {
  11.             icecream.print();
  12.         }
  13.  
  14.         System.out.println("Средний процент жирности: " + Icecream.averageFatContent(icecreams));
  15.         System.out.println("Количество мороженых с шоколадом: " + Icecream.countChocolateIcecream(icecreams));
  16.     }
  17. }
  18.  
  19. class Icecream {
  20.     private String name;
  21.     private boolean hasChocolate;
  22.     private int fatContent; 
  23.  
  24.     public Icecream() {
  25.         this("", false, 0);
  26.     }
  27.  
  28.     public Icecream(String name, boolean hasChocolate) {
  29.         this(name, hasChocolate, 0);
  30.     }
  31.  
  32.     public Icecream(String name, boolean hasChocolate, int fatContent) {
  33.         this.name = name;
  34.         this.hasChocolate = hasChocolate;
  35.         this.fatContent = fatContent;
  36.     }
  37.  
  38.     public Icecream(Icecream icecream) {
  39.         this.name = icecream.name;
  40.         this.hasChocolate = icecream.hasChocolate;
  41.         this.fatContent = icecream.fatContent;
  42.     }
  43.  
  44.     public String getName() {
  45.         return name;
  46.     }
  47.  
  48.     public boolean hasChocolate() {
  49.         return hasChocolate;
  50.     }
  51.  
  52.     public int getFatContent() {
  53.         return fatContent;
  54.     }
  55.  
  56.     public static double averageFatContent(Icecream[] icecreams) {
  57.         int totalFatContent = 0;
  58.         int count = 0;
  59.         for (Icecream icecream : icecreams) {
  60.             if (icecream.getFatContent() != 0) {
  61.                 totalFatContent += icecream.getFatContent();
  62.                 count++;
  63.             }
  64.         }
  65.         return (double) totalFatContent / count;
  66.     }
  67.  
  68.     public static int countChocolateIcecream(Icecream[] icecreams) {
  69.         int count = 0;
  70.         for (Icecream icecream : icecreams) {
  71.             if (icecream.hasChocolate()) {
  72.                 count++;
  73.             }
  74.         }
  75.         return count;
  76.     }
  77.  
  78.     public void print() {
  79.         System.out.println("Название: " + name);
  80.         if (hasChocolate) {
  81.             System.out.println("Содержит шоколад.");
  82.         } else {
  83.             System.out.println("Не содержит шоколад.");
  84.         }
  85.         if (fatContent != 0) {
  86.             System.out.println("Процент жирности: " + fatContent);
  87.         }
  88.         System.out.println();
  89.     }
  90. }
  91.  
Success #stdin #stdout 0.15s 57764KB
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stdin
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Standard input is empty
stdout
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Название: Шоколадное
Содержит шоколад.
Процент жирности: 5

Название: Сливочное
Не содержит шоколад.

Название: 
Не содержит шоколад.

Название: Шоколадное
Содержит шоколад.
Процент жирности: 5

Средний процент жирности: 5.0
Количество мороженых с шоколадом: 2
https://ideone.com/96sU0D
language:
Java (HotSpot 12)
created:
12 days ago
visibility:
public

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