Added a Kotlin variation.

.gitignore

@@ -0,0 +1,2 @@
+Rust/lab_1/target
+Rust/lab_2/target

Java/lab_1/lab_1.java

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+import java.util.Scanner;
+
+public class lab_1 {
+    
+    public static int protectedInput(String variableToRead, Scanner input) {
+        do {
+            try {
+                System.out.printf("Enter %s: ", variableToRead);
+                return input.nextInt();
+            } catch (Exception e) {
+                System.out.printf("%s must be an integer.\n", variableToRead.toUpperCase());
+                input.nextLine();
+            }
+        } while (true);
+    }
+
+    public static void main(String[] args) {
+        Scanner input = new Scanner(System.in);
+
+        final int n = protectedInput("n", input);
+        final int m = protectedInput("m", input);
+        final int a = protectedInput("a", input);
+        final int b = protectedInput("b", input);
+
+        input.close();
+
+        final float s = ((float) (b + m) / 2) * (m - b + 1) * (n - a + 1);
+
+        System.out.println("S = " + s);
+    }
+}

Java/lab_1/lab_1.kt

@@ -0,0 +1,21 @@
+fun protectedInput(variableName: String): Int {
+    do {
+        try {
+            print("Enter $variableName: ")
+            return readln().toInt()
+        } catch (e: Exception) {
+            println("${variableName.uppercase()} must be an integer!")
+        }
+    } while (true)
+}
+
+fun main() {
+    val n: Int = protectedInput("n")
+    val m: Int = protectedInput("m")
+    val a: Int = protectedInput("a")
+    val b: Int = protectedInput("b")
+
+    val s: Float = (b + m).toFloat() / 2 * (m - b + 1) * (n - a + 1)
+
+    println("S = $s")
+}

Java/lab_2/lab_2.java

@@ -0,0 +1,106 @@
+import java.util.Scanner;
+
+public class lab_2 {
+
+    public static short protectedInput(String inputPrompt, String errorMessage, Scanner input) {
+        short read_variable;
+
+        do {
+            try {
+                System.out.println();
+                System.out.print(inputPrompt);
+
+                read_variable = input.nextShort();
+                break;
+            } catch (Exception e) {
+                System.out.println(errorMessage);
+                input.nextLine();
+            }
+        } while (true);
+
+        return read_variable;
+    }
+
+    public static String format(int number) {
+        int width = String.valueOf(number).length() + 1;
+        String format = "|%" + width + "d ";
+
+        return format;
+    }
+
+    public static double average(short[] row) {
+        short sum = 0;
+
+        for (short element : row) {
+            sum += element;
+        }
+
+        double result = sum / row.length;
+
+        return result;
+    }
+
+    public static void main(String[] args) {
+        short a, rows = 0, columns = 0;
+        String format;
+
+        Scanner input = new Scanner(System.in);
+
+        a = protectedInput("Input a constant to multipy a matrix by: ",
+                "A constant must be a short-data type integer, try again.", input);
+
+        System.out.println();
+        System.out.println("Input size of the matrix.");
+
+        do {
+            rows = protectedInput("Rows: ",
+                    "A number of rows must be a short-data type integer, try again.", input);
+        } while (rows <= 0);
+
+        do {
+            columns = protectedInput("Columns: ",
+                    "A number of columns must be a short-data type integer, try again.", input);
+        } while (columns <= 0);
+
+        input.close();
+
+        short[][] matrix_B = new short[rows][columns];
+
+        System.out.println();
+        System.out.println("Matrix B:");
+
+        format = format(rows * columns);
+
+        for (short i = 0; i < rows; i++) {
+            for (short j = 0; j < columns; j++) {
+                matrix_B[i][j] = (short) ((i + 1) * (j + 1));
+
+                System.out.printf(format, matrix_B[i][j]);
+            }
+
+            System.out.println("|");
+        }
+
+        System.out.println();
+        System.out.println("Matrix a×B:");
+
+        format = format(rows * columns * a);
+
+        for (short i = 0; i < matrix_B.length; i++) {
+            for (short j = 0; j < matrix_B[i].length; j++) {
+                matrix_B[i][j] *= (short) (a);
+
+                System.out.printf(format, matrix_B[i][j]);
+            }
+
+            System.out.println("|");
+        }
+
+        System.out.println();
+        System.out.println("Averages of each row:");
+
+        for (short[] row : matrix_B) {
+            System.out.println(average(row));
+        }
+    }
+}

Java/lab_3/lab_3.java

@@ -0,0 +1,58 @@
+package OOP.Java.lab_3;
+
+public class lab_3 {
+    static int maxStrLength;
+    static String result;
+    
+    public static void cSubUtil(StringBuilder stringbuilder, int leftBoundary, int rightBoundary) {
+        String string = stringbuilder.toString().toLowerCase().replaceAll("[^a-z]","");
+        // check if the indices lie in the range of string
+        // and also if it is palindrome
+        while (leftBoundary >= 0 && rightBoundary < string.length() && string.toLowerCase().charAt(leftBoundary) == string.toLowerCase().charAt(rightBoundary)) {
+            // expand the boundary
+            leftBoundary--;
+            rightBoundary++;
+        }
+        // if it's length is greater than maxLength update
+        // maxLength and res
+        if (rightBoundary - leftBoundary - 1 >= maxStrLength) {
+            result = string.substring(leftBoundary + 1, rightBoundary);
+            maxStrLength = rightBoundary - leftBoundary - 1;
+        }
+        return;
+    }
+
+    public static int longestPalSubstr(StringBuilder string)
+    {
+        result = "";
+        maxStrLength = 1;
+        // for every index in the string check palindromes
+        // starting from that index
+        for (int i = 0; i < string.length(); i++) {
+            // check for odd length palindromes
+            cSubUtil(string, i, i);
+            // check for even length palindromes
+            cSubUtil(string, i, i + 1);
+        }
+        System.out.println("Longest palindrome substring is: " + compareStrings(string));
+        return compareStrings(string).length();
+    }
+
+    public static String compareStrings(StringBuilder builder) {
+        for (int leftBoundary = 0; leftBoundary <= builder.length(); leftBoundary++) {
+            for (int rightBoundary = builder.length(); leftBoundary >= 0; rightBoundary--) {
+                if (result.equals(builder.substring(leftBoundary, rightBoundary).toString().toLowerCase().replaceAll("[^a-z]",""))) {
+                    return builder.substring(leftBoundary, rightBoundary).toString();
+                }
+            }
+        }
+        return "";
+    }
+
+    public static void main(String[] args) {
+        StringBuilder stringToDetect = new StringBuilder("Eva, can I see bees in a cave?");
+
+        System.out.println("Initial string: " + stringToDetect.toString());
+        System.out.println("Length is: " + longestPalSubstr(stringToDetect));
+    }
+}

Lab3/Lab2/Lab2/Program.cs

@@ -1,40 +0,0 @@
-using System;
-
-public class Laba2
-{
-    public static void Main(string[] args)
-    {
-        const int a = 2;
-        int[,] b = new[,] //створення матриці;
-        {
-             { 1, 2, 8 },
-             { 3, 4, 5 },
-             { 6, 7, 9 }
-        };
-        int rows = b.GetLength(0); //отримання довжини рядків
-        int cols = b.GetLength(1); //отримання довжини стовпців
-       for (int i = 0; i < rows; i++) 
-        {
-            int Avg = 0;
-            for (int j = 0; j < cols; j++)
-            {
-                Console.Write(b[i, j] + " ");      // перебір матриці для обчислення середнього значення рядка
-                Avg += b[i, j];
-            }
-            Avg = Avg / cols;
-            Console.Write($"-average of row is:{Avg};"  );
-            Console.WriteLine(" ");
-          
-        }
-       Console.WriteLine(" ");
-       for (int x = 0; x < rows; x++)
-       {
-           for (int y = 0; y < cols; y++)
-           {
-               Console.Write(b[x, y] * a + " "); //виведення матриці, помноженої на константу
-
-           }
-           Console.WriteLine(" ");
-       }
-    }
-}

Lab3/Lab3/Lab3/Program.cs

@@ -1,33 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-class Lab3
-{
-    public static void Main(string[] args)
-    {
-        string text = "Вухатий великий синiй слон. Яблуко в саду. Зелене яблуко? Груша. Жовта слива висить у саду!";
-        Console.WriteLine(text );
-
-        // розділяємо текст на окремі речення
-        string[] textSplit = text.Split(new[] { '.', '?', '!' }, StringSplitOptions.RemoveEmptyEntries);
-
-        // обчислюємо кількість слів у кожному реченні та створюємо масив з кількістю слів у реченнях
-        int[] amountOfWords = new int[textSplit.Length];
-        for (int i = 0; i < textSplit.Length; i++)
-        {
-            string[] words = textSplit[i].Trim().Split(' ', StringSplitOptions.RemoveEmptyEntries);
-            amountOfWords[i] = words.Length;
-        }
-
-        // створюємо Dictionary, де ключ - кількість слів у реченні, а значення - речення
-        Dictionary<string, int> sentenceDictionary = new Dictionary<string, int>();
-        for (int i = 0; i < textSplit.Length; i++)
-        {
-            sentenceDictionary.Add(textSplit[i],amountOfWords[i] );
-        }
-        var sortedDict = sentenceDictionary.OrderBy(x => x.Value).ToDictionary(x => x.Key, x => x.Value);
-
-
-        Console.WriteLine(String.Join(";", sortedDict.Keys));
-    }
-}

Lab3/Lab4/Lab4/Program.cs

@@ -1,86 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace ConsoleApp1
-{
-    class Furniture
-    {
-        // 5 полів
-        private string type;
-        private string material;
-        private string color;
-        private int price;
-        private int amount;
-
-        // конструктор з атрибутами
-        public Furniture(string type, string material, string color, int price, int amount)
-        {
-            this.type = type;
-            this.material = material;
-            this.color = color;
-            this.price = price;
-            this.amount = amount;
-        }
-
-        // методи для повернення атрибутів
-        public string getType()
-        {
-            return type;
-        }
-
-        public string getMaterial()
-        {
-            return material;
-        }
-
-        public string getColor()
-        {
-            return color;
-        }
-
-        public int getPrice()
-        {
-            return price;
-        }
-
-        public int getAmount()
-        {
-            return amount;
-        }
-
-        public static void Main(string[] args)
-        {
-
-            Furniture[] furnitureArr = {
-                new Furniture("шафа", "дерево", "коричневий", 5000, 2),
-                new Furniture("стiл", "скло", "чорний", 3000, 3),
-                new Furniture("лiжко", "метал", "срiблястий", 8000, 1),
-                new Furniture("диван", "тканина", "сiрий", 10000, 2),
-                new Furniture("стiлець", "метал", "синій", 500, 4)
-            };
-
-
-            // Сортування масиву за ціною за зростанням
-            var sorted = furnitureArr.OrderBy(ob => ob.price).ToArray();
-            // Вивести відсортований масив
-            Console.WriteLine("Вiдсортований за цiною (за зростанням):");
-            foreach (Furniture f in sorted)
-            {
-                Console.WriteLine(f.getType() + " - " + f.getPrice() + " грн;");
-            }
-            Console.WriteLine(' ');
-            // Сортування масиву за кількістю за спаданням
-            var sortedReversery = furnitureArr.OrderBy(ob => ob.amount).ToArray().Reverse();
-            // Вивести відсортований масив
-            Console.WriteLine("Вiдсортований за кiлькiстю (за спаданням):");
-            foreach (Furniture f in sortedReversery)
-            {
-                Console.Write($"{f.getType()} - {f.getAmount()}; " );
-            }
-            Console.WriteLine(' ');
-        }
-    }
-}

Lab6/Lab6/Program.cs

@@ -1,121 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.Formats.Asn1;
-
-// Визначити ієрархію рухомого складу залізничного транспорту.Створити пасажирський потяг.Порахувати загальну чисельність пасажирів і багажу в потязі.
-// Провести сортування вагонів потягу за рівнем комфортності. Знайти вагон в потязі, що відповідає заданому діапазону кількості пасажирів.
-
-
-class Lab6
-{
-    public static void Main(string[] args)
-    {
-        List<Wagons> wagons = new List<Wagons>(); //створюємо лист-список вагонів;                      
-
-        // Додаємо вагони за допомогою класу Wagons;
-        wagons.Add(new Wagons.PassengerWagons("Пасажирський", 100, 100, "Вищий", 10));
-        wagons.Add(new Wagons.PassengerWagons("Пасажирський", 50, 48, "Середнiй", 20));
-        wagons.Add(new Wagons.PassengerWagons("Пасажирський", 20, 15, "Низький", 30));
-        wagons.Add(new Wagons.FreightWagons("Вантажний", 10, 10));
-        wagons.Add(new Wagons.FreightWagons("Вантажний", 20, 20));
-        wagons.Add(new Wagons.FreightWagons("Вантажний", 30, 30));
-
-        
-        Console.WriteLine("Усi вагони:");  //відображення всіх вагонів;
-
-        foreach (Wagons wagon in wagons)
-        {
-            Console.WriteLine(wagon.GetType() + ": " + wagon.GetPassengers() + " пасажирiв(-а), " + wagon.GetBaggage() +
-                              " валiз/контейнерiв, " + wagon.GetComfort() + ", " + wagon.GetAmount() + ";");
-        }
-
-        int amountOfPassangers = 0;  //обчислення загальної кількості пасажирів;
-        foreach (Wagons p in wagons)
-        {
-            amountOfPassangers += p.GetPassengers();
-        }
-
-        var sorted = wagons.OrderByDescending(ob => ob.GetComfort()).ToArray(); //сортування вагонів за рівнем комфорту;
-        
-        Console.WriteLine("\nКiлькiсть пасажирiв у пасажирському вагонi: " + amountOfPassangers + ";");
-        Console.WriteLine("\nВеддiть мiнiмальну кiлькiсть пасажирiв: ");
-        var minPassangers = Convert.ToInt32(Console.ReadLine());
-        Console.WriteLine("Веддiть максимальну кiлькiсть пасажирiв: ");
-        var maxPassangers = Convert.ToInt32(Console.ReadLine());
-        foreach (Wagons t in wagons)
-        {
-            if (t.GetPassengers() != null && t.GetPassengers() >= minPassangers && t.GetPassengers() <= maxPassangers) //пошук вагону за кількістю пасажирів;
-            {
-                Console.Write(t.GetType() + " - " + t.GetPassengers()+"; ");
-            }
-            else
-            {
-                throw (new InvalidOperationException("Немає такого вагону;"));
-                
-            }
-
-        }
-
-    }
-
-    class Wagons
-    {
-        private string type; // тип вагону
-        private int passengers; // кількість пасажирів
-        private int baggage; // кількість багажу в тоннах
-        private string comfort; // рейтиг комфорту вагону
-        private int amount; // кількість вагонів
-
-        public Wagons(string type, int? passengers, int? baggage, string comfort, int amount)   //конструктор вагонів;
-        {
-            this.type = type;
-            this.passengers = Convert.ToInt32(passengers);
-            this.baggage = Convert.ToInt32(baggage);
-            this.comfort = comfort;
-            this.amount = amount;
-        }
-
-        public string GetType()         //геттери атрибутів класу;
-        {
-            return type;
-        }
-
-        public int GetPassengers()
-        {
-            return passengers;
-        }
-
-        public int? GetBaggage()
-        {
-            return baggage;
-        }
-
-        public string GetComfort()
-        {
-            return comfort;
-        }
-
-        public int GetAmount()
-        {
-            return amount;
-        }
-
-        // підклас Пасажирський вагон який наслідує батьківський клас Вагони;
-        public class PassengerWagons : Wagons
-        {
-            public PassengerWagons(string type, int passengers, int baggage, string comfort, int amount) : base(type,
-                passengers, baggage, comfort, amount)
-            {
-            }
-        }
-
-        // підклас Вантажний вагон який наслідує батьківський клас Вагони;
-        public class FreightWagons : Wagons
-        {
-            public FreightWagons(string type, int baggage, int amount) : base(type, null, baggage, null, amount)
-            {
-            }
-        }
-    }
-}

READ ME

@@ -1 +0,0 @@
-Files with lab2,3,4 located in in Lab3. My excuses for confusing you

Rust/lab_1/Cargo.lock

@@ -0,0 +1,16 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "lab_1"
+version = "0.1.0"
+dependencies = [
+ "text_io",
+]
+
+[[package]]
+name = "text_io"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d5f0c8eb2ad70c12a6a69508f499b3051c924f4b1cfeae85bfad96e6bc5bba46"

Rust/lab_1/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "lab_1"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[profile.release]
+opt-level = 'z'     # Optimize for size
+lto = true          # Enable link-time optimization
+codegen-units = 1   # Reduce number of codegen units to increase optimizations
+panic = 'abort'     # Abort on panic
+strip = true        # Strip symbols from binary*
+
+[dependencies]
+text_io = "0.1.12"

Rust/lab_1/src/main.rs

@@ -0,0 +1,22 @@
+fn protected_read(variable_name: &str) -> i32 {
+    use text_io::try_read;
+    loop {
+        print!("Enter {}: ", variable_name);
+        let read_result: Result<i32, _> = try_read!();
+        match read_result {
+            Ok(read_integer) => return read_integer,
+            Err(_e) => println!("{} must be an integer!", variable_name.to_uppercase()),
+        }
+    }
+}
+
+fn main() {
+    let n: i32 = protected_read("n");
+    let m: i32 = protected_read("m");
+    let a: i32 = protected_read("a");
+    let b: i32 = protected_read("b");
+
+    let s: f32 = ((b + m) as f32 / 2f32) * ((m - b + 1) * (n - a + 1)) as f32;
+
+    println!("S = {}", s);
+}

Rust/lab_2/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "lab_2"
+version = "0.1.0"

Rust/lab_2/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "lab_2"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

Rust/lab_2/src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}

src/Lab1.java

@@ -1,58 +0,0 @@
-public class Lab1 {
-    public static void main(String[] args) {
-//        char c = 'a' + '1';
-        char c = 97;
-//        char c = '1';
-        System.out.println(c);
-        System.out.println((int) c);
-        c++;
-        System.out.println(c);
-        System.out.println((int) c);
-        System.out.println((double)'1'/'3');
-
-//        System.out.println( (double) 0 / 0 );
-//        System.out.println( Math.sqrt(-1) );
-        double s = 0;
-        /*for (int i = 1; i <= 3; i++) { // 1) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> i = 1, 2) <20><><EFBFBD><EFBFBD> <20> <= 3, 3) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 䳿 <20> <20><> <20><><EFBFBD><EFBFBD><EFBFBD>,
-            System.out.println(i);     // 4) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><> 1, 5) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD> 2
-//            s = s + i;
-            s += i;
-        }*/
-        /*int[] array = new int[2];
-        for (int i = 0; i < array.length; i++) {
-
-        }*/
-        final int A = -3;
-        final int B = 0;
-        final int N = 2;
-        final int M = 2;
-
-        final int C = 1;
-//        boolean wasDivisionByZero = false;
-//        todo char
-//        todo[clear code] think about avoiding brackets
-        if ((A <= -C && -C <= N) || (B <= 0 && 0 <= M)) {
-            System.out.println("Division by zero!");
-            return;
-        }
-/*myLabel:*/for (int i = A; i <= N /*&& !wasDivisionByZero*/; i++) {
-            /*if (i + C == 0) { // todo optimize
-                System.out.println("Division by zero!");
-                wasDivisionByZero = true;
-                break; //todo flag vs return;
-            }*/
-            for (int j = B; j <= M; j++) {
-                /*if (j == 0) {
-                    System.out.println("Division by zero!");
-                    return;
-//                    wasDivisionByZero = true;
-//                    break myLabel;
-                }*/
-                s += (double) (i / j) / (i + C);
-            }
-        }
-//        if (!wasDivisionByZero) {
-            System.out.println("s = " + s);
-//        }
-    }
-}

src/Lab2.java

@@ -1,26 +0,0 @@
-public class Lab2 {
-    public static void main(String[] args) {
-        int[] array = {1, 2, 3};
-        /*for (int i = 0; i < array.length; i++) {
-            if (i % 2 == 0) {
-                System.out.println("!" + array[i]);
-            } else {
-                System.out.println("?" + array[i]);
-            }
-        }*/
-
-        for (int i = 0; i < array.length; i+=2) {
-            System.out.println("!" + array[i]);
-        }
-
-        for (int i = 1; i < array.length; i+=2) {
-            System.out.println("?" + array[i]);
-        }
-
-//        зубчасті матриці
-        int[][] matrix = {
-                {1, 2},
-                {3}
-        };
-    }
-}

src/Main.java

@@ -1,42 +0,0 @@
-public class Main {
-    public static void main(String[] args) {
-        System.out.println(args[2]);
-        System.out.println("Hello world!");
-//        System.out.println(1);
-
-        int a = 1;
-        int b = 2;
-        int c = 1;
-        int d = 1;
-
-        System.out.println(2&1);
-        System.out.println(2|1);
-        int aa = 2;
-
-        /*if (aa) {
-
-        }*/
-
-//        System.out.println("a"&"b");
-        System.out.println('a'&'b');
-
-        if ((a > b) & MyBooleanMethod()) {
-            System.out.println("?????????????????????????");
-        }
-
-
-    }
-
-    static boolean MyBooleanMethod() {
-        System.out.println("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
-        return true;
-    }
-
-    void myFunction() {
-
-    }
-
-    int myFunction2() {
-        return 1;
-    }
-}

src/encapsulationInheritancePolymorphism/Encapsulation.java

@@ -1,20 +0,0 @@
-package encapsulationInheritancePolymorphism;
-
-public class Encapsulation {
-    /*private*/ int field;
-    private int field2;
-//    int a = 1;
-
-    public void myMethodForTheField () {
-        System.out.println(field);
-    }
-
-    public void myMethodForTheField2 () {
-        System.out.println(field);
-    }
-
-    public void myMethodForTheFieldAndTheField2 () {
-        System.out.println(field);
-    }
-}
-

src/encapsulationInheritancePolymorphism/EncapsulationInheritancePolymorphism.java

@@ -1,10 +0,0 @@
-package encapsulationInheritancePolymorphism;
-
-public class EncapsulationInheritancePolymorphism {
-
-    public static void main(String[] args) {
-        int a = 1;
-//        var b = 2;
-//        System.out.println(b);
-    }
-}

src/encapsulationInheritancePolymorphism/Main.java

@@ -1,14 +0,0 @@
-package encapsulationInheritancePolymorphism;
-
-public class Main {
-    public static void main(String[] args) {
-        Student student = new Student();
-
-
-
-
-        //...
-
-        student.setFaculty("FPM", "MO-22");
-    }
-}

src/encapsulationInheritancePolymorphism/Student.java

@@ -1,18 +0,0 @@
-package encapsulationInheritancePolymorphism;
-
-public class Student {
-    private String name;
-    private String surname;
-    private String group;
-    private String faculty;
-
-
-    public String getName() {
-        return name;
-    }
-
-    public void setFaculty(String faculty, String group) {
-        this.faculty = faculty;
-        this.group = group;
-    }
-}

src/encapsulationInheritancePolymorphism/inheritance/ElectricEngine.java

@@ -1,9 +0,0 @@
-package encapsulationInheritancePolymorphism.inheritance;
-
-public class ElectricEngine extends Engine {
-    private String batteryType;
-
-    /*private class Engine {
-        private int power;
-    }*/
-}

src/encapsulationInheritancePolymorphism/inheritance/Engine.java

@@ -1,5 +0,0 @@
-package encapsulationInheritancePolymorphism.inheritance;
-
-public class Engine {
-    private int power;
-}

src/encapsulationInheritancePolymorphism/inheritance/FuelEngine.java

@@ -1,5 +0,0 @@
-package encapsulationInheritancePolymorphism.inheritance;
-
-public class FuelEngine extends Engine {
-    private String fuelType;
-}

src/encapsulationInheritancePolymorphism/inheritance/Main.java

@@ -1,8 +0,0 @@
-package encapsulationInheritancePolymorphism.inheritance;
-
-public class Main {
-    public static void main(String[] args) {
-        ElectricEngine electricEngine = new ElectricEngine(); // створення нового об'єкту (екземпляру) класу ElectricEngine
-        FuelEngine fuelEngine = new FuelEngine();
-    }
-}

src/encapsulationInheritancePolymorphism/polymorphism/ElectricEngine.java

@@ -1,14 +0,0 @@
-package encapsulationInheritancePolymorphism.polymorphism;
-
-public class ElectricEngine extends Engine {
-    private String batteryType;
-
-    @Override
-    public int getPower() {
-        return 20;
-    }
-
-    /*private class Engine {
-        private int power;
-    }*/
-}

src/encapsulationInheritancePolymorphism/polymorphism/Engine.java

@@ -1,9 +0,0 @@
-package encapsulationInheritancePolymorphism.polymorphism;
-
-public class Engine {
-    private int power;
-
-    public int getPower() {
-        return power;
-    }
-}

src/encapsulationInheritancePolymorphism/polymorphism/FuelEngine.java

@@ -1,10 +0,0 @@
-package encapsulationInheritancePolymorphism.polymorphism;
-
-public class FuelEngine extends Engine {
-    private String fuelType;
-
-    @Override
-    public int getPower() {
-        return 50;
-    }
-}

src/encapsulationInheritancePolymorphism/polymorphism/Main.java

@@ -1,38 +0,0 @@
-package encapsulationInheritancePolymorphism.polymorphism;
-
-/*import encapsulationInheritancePolymorphism.inheritance.ElectricEngine;
-import encapsulationInheritancePolymorphism.inheritance.FuelEngine;*/
-
-public class Main {
-    public static void main(String[] args) {
-        /*encapsulationInheritancePolymorphism.inheritance.*/ElectricEngine electricEngine = new ElectricEngine(); // створення нового об'єкту (екземпляру) класу ElectricEngine
-        /*encapsulationInheritancePolymorphism.inheritance.*/FuelEngine fuelEngine = new FuelEngine();
-
-        Engine engine1 = fuelEngine;
-
-        Engine[] engines = {
-                electricEngine,
-                fuelEngine
-        };
-
-        for (Engine engine : engines) {
-            System.out.println(engine.getPower());
-        }
-
-        /*for (int i = 0; i < engines.length; i++) {
-            System.out.println(engines[i].getPower());
-        }*/
-
-//        +
-        int a = 1;
-        int b = 1;
-        int c = a + b;
-        System.out.println(c);
-
-
-        String sA = "1";
-        String sB = "1";
-        String sC = sA + sB;
-        System.out.println(sC);
-    }
-}

src/encapsulationInheritancePolymorphism/polymorphism/enhanced/ElectricEngine.java

@@ -1,19 +0,0 @@
-package encapsulationInheritancePolymorphism.polymorphism.enhanced;
-
-public class ElectricEngine extends Engine {
-    private String batteryType;
-    private int chargeLevel = 9;
-    private int criticalChargeLevel = 10;
-    private float coefficientCriticalPowerCut = 0.1f;
-
-    @Override
-    public int getPower() {
-        return chargeLevel > criticalChargeLevel
-                ? super.getPower()
-                : (int) (super.getPower() * coefficientCriticalPowerCut);
-    }
-
-    /*private class Engine {
-        private int power;
-    }*/
-}

src/encapsulationInheritancePolymorphism/polymorphism/enhanced/Engine.java

@@ -1,9 +0,0 @@
-package encapsulationInheritancePolymorphism.polymorphism.enhanced;
-
-public class Engine {
-    private int power = 100;
-
-    public int getPower() {
-        return power;
-    }
-}

src/encapsulationInheritancePolymorphism/polymorphism/enhanced/FuelEngine.java

@@ -1,10 +0,0 @@
-package encapsulationInheritancePolymorphism.polymorphism.enhanced;
-
-public class FuelEngine extends Engine {
-    private String fuelType;
-
-    /*public int getPower() {
-        return 50;
-    }*/
-
-}

src/encapsulationInheritancePolymorphism/polymorphism/enhanced/Main.java

@@ -1,28 +0,0 @@
-package encapsulationInheritancePolymorphism.polymorphism.enhanced;
-
-/*import encapsulationInheritancePolymorphism.inheritance.ElectricEngine;
-import encapsulationInheritancePolymorphism.inheritance.FuelEngine;*/
-
-public class Main {
-    public static void main(String[] args) {
-        /*encapsulationInheritancePolymorphism.inheritance.*/
-        ElectricEngine electricEngine = new ElectricEngine(); // створення нового об'єкту (екземпляру) класу ElectricEngine
-        /*encapsulationInheritancePolymorphism.inheritance.*/
-        FuelEngine fuelEngine = new FuelEngine();
-
-        Engine engine1 = fuelEngine;
-
-        Engine[] engines = {
-                electricEngine,
-                fuelEngine
-        };
-
-        for (Engine engine : engines) {
-            System.out.println(engine.getPower());
-        }
-
-        /*for (int i = 0; i < engines.length; i++) {
-            System.out.println(engines[i].getPower());
-        }*/
-    }
-}

src/encapsulationInheritancePolymorphism/polymorphism/overload/MyClassForOverloadExample.java

@@ -1,17 +0,0 @@
-package encapsulationInheritancePolymorphism.polymorphism.overload;
-
-public class MyClassForOverloadExample {
-    void myMethod(int a) {
-        System.out.println("Integer: " + a);
-    }
-
-    void myMethod(double a) {
-        System.out.println("Double: " + a);
-    }
-
-    public static void main(String[] args) {
-        MyClassForOverloadExample overload = new MyClassForOverloadExample();
-        overload.myMethod(1);
-        overload.myMethod(0.1);
-    }
-}

src/test/A.java

@@ -1,13 +0,0 @@
-package test;
-
-public class A {
-    /*private*/ int f/* = 3*/;
-
-    public int getF() {
-        return f;
-    }
-
-    public void setF(int f) {
-        this.f = f;
-    }
-}

src/test/Main.java

@@ -1,15 +0,0 @@
-package test;
-
-public class Main {
-    public static void main(String[] args) {
-        A a = new A();
-        System.out.println(a.getF());
-        a.setF(1);
-        System.out.println(a.getF());
-
-        System.out.println(a.f);
-
-        int[] array = {1, 2, 1};
-        System.out.println(array.length);
-    }
-}