For pr

resource/files/lesson32_files_1/task1/carCatalog.txt

@@ -0,0 +1,10 @@
+RR-111-RR;2015;yellow
+RR-222-RR;2016;yellow
+RR-333-RR;2017;yellow
+RR-444-RR;2018;yellow
+RR-555-RR;2018;yellow
+RR-666-RR;2018;yellow
+RR-777-RR;2018;yellow
+RR-888-RR;2018;yellow
+RR-999-RR;2018;yellow
+RR-000-RR;2018;yellow

resource/files/lesson32_files_1/task2/carCatalog.txt

@@ -0,0 +1,10 @@
+RR-111-RR;2015;yellow
+RR-222-RR;2016;yellow
+RR-333-RR;2017;yellow
+RR-444-RR;2018;yellow
+RR-555-RR;2018;yellow
+RR-666-RR;2018;yellow
+RR-777-RR;2018;yellow
+RR-888-RR;2018;yellow
+RR-999-RR;2018;yellow
+RR-000-RR;2018;yellow

src/com/walking/lesson14_polymorphism/task1/Main.java

@@ -1,5 +1,11 @@
 package com.walking.lesson14_polymorphism.task1;
 
+import com.walking.lesson14_polymorphism.task1.model.RegularFigure;
+import com.walking.lesson14_polymorphism.task1.model.Square;
+import com.walking.lesson14_polymorphism.task1.model.Triangle;
+
+import java.util.Scanner;
+
 /**
  * Реализуйте класс «Правильная фигура».
  * Для него создайте классы-наследники «Треугольник» и «Квадрат».
@@ -10,7 +16,41 @@
  * <p>
  * Обратите внимание, символ '\' в Java необходимо экранировать: '\\'.
  */
+
 public class Main {
+    public static final Scanner SCANNER = new Scanner(System.in);
+    public static final String MENU = """
+            1. Triangle
+            2. Square
+
+            Make your choice:""";
+
     public static void main(String[] args) {
+        int figureType = requireInt(MENU);
+
+        int length = requireInt("Enter a length: ");
+
+        System.out.println(createFigure(figureType, length));
+    }
+
+    private static String createFigure(int figureType, int length) {
+        RegularFigure figure;
+
+        switch (figureType) {
+            case 1:
+                figure = new Triangle(length);
+                break;
+            case 2:
+                figure = new Square(length);
+                break;
+            default:
+                figure = new RegularFigure(length);
+        }
+        return figure.getFigure();
+    }
+
+    public static int requireInt(String message) {
+        System.out.print(message);
+        return SCANNER.nextInt();
     }
 }

src/com/walking/lesson14_polymorphism/task1/model/RegularFigure.java

@@ -0,0 +1,17 @@
+package com.walking.lesson14_polymorphism.task1.model;
+
+public class RegularFigure {
+    public static final String EMPTY_UNIT = " ";
+    public static final String NEW_LINE_UNIT = "\n";
+
+    public final int length;
+
+    public RegularFigure(int length) {
+        this.length = length;
+    }
+
+    public String getFigure() {
+        String figure = EMPTY_UNIT + NEW_LINE_UNIT;
+        return figure;
+    }
+}

src/com/walking/lesson14_polymorphism/task1/model/Square.java

@@ -0,0 +1,43 @@
+package com.walking.lesson14_polymorphism.task1.model;
+
+public class Square extends RegularFigure {
+    public static final String VERTICAL_LINE_UNIT = "|";
+    public static final String HORIZONTAL_UNIT = "---";
+
+    public Square(int length) {
+        super(length);
+    }
+
+    @Override
+    public String getFigure() {
+        return createHorizontalLine() + createVerticalLines() + createHorizontalLine();
+
+    }
+
+    protected String createHorizontalLine() {
+        String horizontalLine = EMPTY_UNIT;
+        for (int i = 0; i < length; i++) {
+            horizontalLine += HORIZONTAL_UNIT;
+        }
+        horizontalLine += EMPTY_UNIT + NEW_LINE_UNIT;
+        return horizontalLine;
+    }
+
+    protected String createVerticalLines() {
+        String verticalLineUnit = createVerticalLineUnit();
+        String verticalLines = "";
+        for (int i = 0; i < length; i++) {
+            verticalLines += verticalLineUnit;
+        }
+        return verticalLines;
+    }
+
+    private String createVerticalLineUnit() {
+        String verticalLineUnit = VERTICAL_LINE_UNIT;
+        for (int i = 0; i < length * 3; i++) {
+            verticalLineUnit += EMPTY_UNIT;
+        }
+        verticalLineUnit += VERTICAL_LINE_UNIT + NEW_LINE_UNIT;
+        return verticalLineUnit;
+    }
+}

src/com/walking/lesson14_polymorphism/task1/model/Triangle.java

@@ -0,0 +1,50 @@
+package com.walking.lesson14_polymorphism.task1.model;
+
+public class Triangle extends RegularFigure {
+    public static final String LEFT_SIDE_UNIT = "/";
+    public static final String RIGHT_SIDE_UNIT = "\\";
+    public static final String HORIZONTAL_UNIT = "--";
+
+    public Triangle(int length) {
+        super(length);
+    }
+
+    @Override
+    public String getFigure() {
+        return createVerticalLines() + createHorizontalLine();
+    }
+
+    protected String createHorizontalLine() {
+        String horizontalLine = EMPTY_UNIT;
+        for (int i = 0; i < length; i++) {
+            horizontalLine += HORIZONTAL_UNIT;
+        }
+        return horizontalLine + NEW_LINE_UNIT;
+    }
+
+    protected String createVerticalLines() {
+        String verticalLines = "";
+        return createVerticalLines(length, length, verticalLines);
+    }
+
+    private String createVerticalLines(int width, int height, String verticalLines) {
+        for (int l = 0; l < height; l++) {
+            verticalLines += createVerticalLineUnit(width--, l);
+        }
+        return verticalLines;
+    }
+
+    private String createVerticalLineUnit(int width, int height) {
+        String verticalLineUnit = "";
+        for (int before = width; before > 0; before--) {
+            verticalLineUnit += EMPTY_UNIT;
+        }
+        verticalLineUnit += LEFT_SIDE_UNIT;
+        for (int after = height * 2; after > 0; after--) {
+            verticalLineUnit += EMPTY_UNIT;
+        }
+        verticalLineUnit += RIGHT_SIDE_UNIT + NEW_LINE_UNIT;
+
+        return verticalLineUnit;
+    }
+}

src/com/walking/lesson14_polymorphism/task2/Main.java

@@ -1,5 +1,10 @@
 package com.walking.lesson14_polymorphism.task2;
 
+import com.walking.lesson14_polymorphism.task2.model.Animal;
+import com.walking.lesson14_polymorphism.task2.model.Cat;
+import com.walking.lesson14_polymorphism.task2.model.Cow;
+import com.walking.lesson14_polymorphism.task2.model.Dog;
+
 /**
  * Используя новые знания, упростите реализацию задачи 2 из предыдущего урока:
  * <a href="https://telegra.ph/Nasledovanie-Klyuchevoe-slovo-extends-i-ispolzovanie-protected-Klyuchevoe-slovo-super-Privedenie-ssylochnyh-tipov-11-23">...</a>
@@ -8,7 +13,17 @@
  * <p>
  * Использовать отдельное поле для хранения выводимой строки — недопустимо:)
  */
+
 public class Main {
     public static void main(String[] args) {
+        Animal[] animals = new Animal[]{new Cat(), new Cow(), new Dog()};
+
+        soundAll(animals);
+    }
+
+    private static void soundAll(Animal[] animals) {
+        for (Animal x : animals) {
+            x.sound();
+        }
     }
 }

src/com/walking/lesson14_polymorphism/task2/model/Animal.java

@@ -0,0 +1,8 @@
+package com.walking.lesson14_polymorphism.task2.model;
+
+public class Animal {
+
+    public void sound() {
+        System.out.println("Unknown animal");
+    }
+}

src/com/walking/lesson14_polymorphism/task2/model/Cat.java

@@ -0,0 +1,9 @@
+package com.walking.lesson14_polymorphism.task2.model;
+
+public class Cat extends Animal {
+
+    @Override
+    public void sound() {
+        System.out.println("meow");
+    }
+}

src/com/walking/lesson14_polymorphism/task2/model/Cow.java

@@ -0,0 +1,9 @@
+package com.walking.lesson14_polymorphism.task2.model;
+
+public class Cow extends Animal {
+
+    @Override
+    public void sound() {
+        System.out.println("moo");
+    }
+}

src/com/walking/lesson14_polymorphism/task2/model/Dog.java

@@ -0,0 +1,9 @@
+package com.walking.lesson14_polymorphism.task2.model;
+
+public class Dog extends Animal {
+
+    @Override
+    public void sound() {
+        System.out.println("woof");
+    }
+}

src/com/walking/lesson16_abstract_class_interface/task1_abstract_class/Main.java

@@ -1,11 +1,50 @@
 package com.walking.lesson16_abstract_class_interface.task1_abstract_class;
 
+import com.walking.lesson16_abstract_class_interface.task1_abstract_class.model.EquiliteralShape;
+import com.walking.lesson16_abstract_class_interface.task1_abstract_class.model.EquiliteralTriangle;
+import com.walking.lesson16_abstract_class_interface.task1_abstract_class.model.Square;
+
+import java.util.Scanner;
+
 /**
  * Реализуйте задачу
  * <a href="https://github.com/KFalcon2022/practical-tasks/tree/master/src/com/walking/lesson14_polymorphism/task1">...</a>
  * используя абстрактный класс.
  */
 public class Main {
     public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+
+        System.out.print("Enter shape's length: ");
+        int length = scanner.nextInt();
+
+        System.out.print("Enter shape's type:\n 1: Square\n 2: Triangle\n");
+        int shapeType = scanner.nextInt();
+
+        scanner.close();
+
+        if (length < 1 || (shapeType != 1 && shapeType != 2)) {
+            System.out.println("Incorrect input");
+            return;
+        }
+
+        String shapeString = createShapeString(length, shapeType);
+        System.out.println(shapeString);
+    }
+
+    private static String createShapeString(int length, int type) {
+        EquiliteralShape shape;
+
+        switch (type) {
+            case 1:
+                shape = new Square(length);
+                break;
+            case 2:
+                shape = new EquiliteralTriangle(length);
+                break;
+            default:
+                return "Unknown shape";
+        }
+        return shape.createShapeString();
     }
 }

src/com/walking/lesson16_abstract_class_interface/task1_abstract_class/model/EquiliteralShape.java

@@ -0,0 +1,19 @@
+package com.walking.lesson16_abstract_class_interface.task1_abstract_class.model;
+
+public abstract class EquiliteralShape {
+    public static final String EMPTY_ELEMENT = " ";
+    public static final String EMPTY_STRING = "";
+    public static final char NEW_LINE_SYMBOL = '\n';
+
+    protected final int length;
+
+    public EquiliteralShape(int length) {
+        this.length = length;
+    }
+
+    public int getLength() {
+        return length;
+    }
+
+    public abstract String createShapeString();
+}

src/com/walking/lesson16_abstract_class_interface/task1_abstract_class/model/EquiliteralTriangle.java

@@ -0,0 +1,35 @@
+package com.walking.lesson16_abstract_class_interface.task1_abstract_class.model;
+
+public class EquiliteralTriangle extends EquiliteralShape {
+    public static final String TRIANGLE_HORIZONTAL_SIDE_ELEMENT = "--";
+    public static final String TRIANGLE_LEFT_SIDE_ELEMENT = "/";
+    public static final String TRIANGLE_RIGHT_SIDE_ELEMENT = "\\";
+
+    public EquiliteralTriangle(int length) {
+        super(length);
+    }
+
+    @Override
+    public String createShapeString() {
+        String triangle = EMPTY_STRING;
+
+        for (int i = 0; i < length; i++) {
+            for (int j = 0; j < length - i; j++) {
+                triangle += EMPTY_ELEMENT;
+            }
+            triangle += TRIANGLE_LEFT_SIDE_ELEMENT;
+
+            for (int j = 0; j < i * 2; j++) {
+                triangle += EMPTY_ELEMENT;
+            }
+            triangle += TRIANGLE_RIGHT_SIDE_ELEMENT + NEW_LINE_SYMBOL;
+        }
+        triangle += EMPTY_ELEMENT;
+
+        for (int i = 0; i < length; i++) {
+            triangle += TRIANGLE_HORIZONTAL_SIDE_ELEMENT;
+        }
+
+        return triangle;
+    }
+}