Add 'Programming/ProgLab3/' from commit 'da7c6aa397ab3d503b9328211e5aaa932c071524'

git-subtree-dir: Programming/ProgLab3
git-subtree-mainline: 329aa90447
git-subtree-split: da7c6aa397

Programming/ProgLab3/food/Tree.java

@@ -0,0 +1,58 @@
+package food;
+
+import java.util.ArrayList;
+
+public class Tree {
+    private ArrayList<Fruit> fruits = new ArrayList<>();
+
+    public Tree() {
+        int rand = (int) (Math.random()*3) + 1;
+        for (int i = 0; i < (int) (Math.random() * 11) + 1; i++) {
+            switch (rand) {
+                case 1: addFruit(new Apple()); break;
+                case 2: addFruit(new Banana()); break;
+                case 3: addFruit(new Pear()); break;
+            }
+        }
+    }
+
+    @Override
+    public String toString() {
+        return "дерево с " + this.getFruits().get(0).toString();
+    }
+
+    @Override
+    public boolean equals(Object object) {
+        if (this == object) return true;
+        if (object == null) return false;
+        if (this.getClass() == object.getClass()) {
+            Tree tree = (Tree) object;
+            if (this.getFruitsAmount() != tree.getFruitsAmount()) return false;
+            for (int i = 0; i < this.getFruitsAmount(); i++) {
+                if (this.getFruits().get(i) != tree.getFruits().get(i)) return false;
+            }
+            return true;
+        } return false;
+    }
+
+    @Override
+    public int hashCode() {
+        int total = 0;
+        for (int i = 0; i < this.getFruitsAmount(); i++) {
+            total = 31 * total + this.getFruits().get(i).hashCode();
+        }
+        return total;
+    }
+
+    public ArrayList<Fruit> getFruits() {
+        return fruits;
+    }
+
+    public int getFruitsAmount() {
+        return fruits.size();
+    }
+
+    public void addFruit(Fruit fruit) {
+        fruits.add(fruit);
+    }
+}