Add files via upload

.gitignore

@@ -0,0 +1,2 @@
+# Project exclude paths
+/out/

Java/lab_1/lab_1.java

@@ -1,33 +0,0 @@
- package OOP.Java.lab_1;
-
-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

@@ -1,23 +0,0 @@
-package OOP.Java.lab_1
-
-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

@@ -1,109 +0,0 @@
-package OOP.Java.lab_2;
-
-import org.jetbrains.annotations.Contract;
-import org.jetbrains.annotations.NotNull;
-
-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;
-    }
-
-    @NotNull
-    public static String format(int number) {
-        int width = String.valueOf(number).length() + 1;
-
-        return "|%" + width + "d ";
-    }
-
-    @Contract(pure = true)
-    public static double average(@NotNull short[] row) {
-        short sum = 0;
-
-        for (short element : row) {
-            sum += element;
-        }
-
-        return (double) sum / row.length;
-    }
-
-    public static void main(String[] args) {
-        short rows, columns;
-
-        Scanner input = new Scanner(System.in);
-
-        final short a = protectedInput("Input a constant to multiply 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:");
-
-        String 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] *= (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

@@ -1,57 +0,0 @@
-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 maxStrLength update
-        // maxLength and result
-        if (rightBoundary - leftBoundary - 1 >= maxStrLength) {
-            result = string.substring(leftBoundary + 1, rightBoundary);
-            maxStrLength = rightBoundary - leftBoundary - 1;
-        }
-    }
-
-    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(); rightBoundary >= leftBoundary; rightBoundary--) {
-                if (result.equals(builder.substring(leftBoundary, rightBoundary).toLowerCase().replaceAll("[^a-z]",""))) {
-                    return builder.substring(leftBoundary, rightBoundary);
-                }
-            }
-        }
-        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);
-        System.out.println("Length is: " + longestPalSubstr(stringToDetect));
-    }
-}

Java/lab_4/Furniture.kt

@@ -1,11 +0,0 @@
-package OOP.Java.lab_4
-
-class Furniture(val name: String, val material: String, val price: Int, val length: Int, val width: Int, val height: Int) {
-    fun print(nameWidth: Int, materialWidth: Int, priceWidth: Int){
-        print("Furniture stats: {")
-        print("Name: ${this.name.padEnd(nameWidth)}   ")
-        print("Material: ${this.material.padEnd(materialWidth)}   ")
-        print("Price: ${(this.price.toString() + " cu").padEnd(priceWidth + 3)}   ")
-        print("Size: ${this.length}×${this.width}×${this.height}};\n")
-    }
-}

Java/lab_4/lab_4.kt

@@ -1,26 +0,0 @@
-package OOP.Java.lab_4
-
-fun main() {
-    val furnitureArray = arrayOf(
-        Furniture("Chair", "Wood", 10, 5, 5, 10),
-        Furniture("Counter-top", "Marble", 1_000, 10, 5, 1),
-        Furniture("Dinner table", "Glass", 500, 15, 10, 1),
-        Furniture("Office table", "Wood", 200, 10, 7, 1),
-        Furniture("Refrigerator", "Stainless steel", 20_000, 8, 4, 10)
-    )
-
-    val maxNameWidth = furnitureArray.maxWith(Comparator.comparingInt { it.name.length }).name.length
-    val maxMaterialWidth = furnitureArray.maxWith(Comparator.comparingInt { it.material.length }).material.length
-    val maxPriceWidth = furnitureArray.maxWith(Comparator.comparingInt { it.price }).price.toString().length
-
-    println("\nUnsorted array:")
-    for (item in furnitureArray) item.print(maxNameWidth, maxMaterialWidth, maxPriceWidth)
-
-    println("\nSorted alphabetically by name:")
-    furnitureArray.sortBy { it.name }
-    for (item in furnitureArray) item.print(maxNameWidth, maxMaterialWidth, maxPriceWidth)
-
-    println("\nSorted alphabetically by material:")
-    furnitureArray.sortBy { it.material }
-    for (item in furnitureArray) item.print(maxNameWidth, maxMaterialWidth, maxPriceWidth)
-}

Java/lab_5/Letter.kt

@@ -1,23 +0,0 @@
-package OOP.Java.lab_5
-
-/**
- * A class representing a single letter in a word.
- *
- * @property character a character value of a Letter.
- */
-class Letter(private val character: Char) {
-    override fun toString(): String {
-        return this.character.toString()
-    }
-
-    /**
-     * Indicates whether the two objects of class Letter are "equal".
-     *
-     * @param letter a letter to compare.
-     * @param ignoreCase if set to "true" will ignore the case of Letters compared.
-     * @return "true" if letters are equal and "false" if they aren't.
-     */
-    fun letterEquals(letter: Letter, ignoreCase: Boolean): Boolean {
-        return this.character.toString().equals(letter.toString(), ignoreCase)
-    }
-}

Java/lab_5/Punctuation.kt

@@ -1,19 +0,0 @@
-package OOP.Java.lab_5
-
-/**
- * A class representing a punctuation mark following a word or a sentence.
- *
- * @property punctuationMark a [String] value of a punctuation mark.
- */
-class Punctuation(var punctuationMark: String) {
-
-    init {
-        if (!"\\p{Punct}".toRegex().containsMatchIn(punctuationMark)) {
-            this.punctuationMark = ""
-        }
-    }
-
-    override fun toString(): String {
-        return punctuationMark
-    }
-}

Java/lab_5/Sentence.kt

@@ -1,35 +0,0 @@
-package OOP.Java.lab_5
-
-/**
- * A class representing a single sentence is a text.
- *
- * @property sentenceArray a [Pair] of [Array]s of [Word] and [Punctuation] objects that make up a sentence.
- *
- * @constructor a primary constructor accepts a [Pair] of [Array]s of [Word] and [Punctuation] objects, a secondary one accepts a string representing the entire sentence.
- */
-class Sentence(var sentenceArray: Pair<Array<Word>, Array<Punctuation>>) {
-
-    constructor(
-        sentenceString: String
-    ) : this(
-        Pair(
-            sentenceString.split("[\\p{Punct}\\s]+".toRegex()).filter { it.isNotEmpty() }.map { word -> Word(word) }.toTypedArray(),
-            sentenceString.split(" ").map { word -> Punctuation(word.last().toString()) }.toTypedArray()
-        )
-    )
-
-    /**
-     * Returns an array of all [Letter] objects in a sentence.
-     */
-    fun getAllLetters(): Array<Letter> {
-        var allLetters = arrayOf<Letter>()
-        this.sentenceArray.first.forEach { allLetters += it.letters }
-        return allLetters
-    }
-
-    override fun toString(): String {
-        var sentence = arrayOf<String>()
-        this.sentenceArray.first.indices.forEach {sentence += this.sentenceArray.first[it].toString() + this.sentenceArray.second[it].toString() }
-        return sentence.joinToString(" ")
-    }
-}

Java/lab_5/Text.kt

@@ -1,83 +0,0 @@
-package OOP.Java.lab_5
-
-/**
- * A class representing the entire text.
- *
- * @property textArray a [Pair] of [Array]s of [Sentence] and [Punctuation] objects that make up a text.
- *
- * @constructor a primary constructor accepts a [Pair] of [Array]s of [Sentence] and [Punctuation] objects, a secondary one accepts a string representing the entire text.
- */
-class Text(var textArray: Pair<Array<Sentence>, Array<Punctuation>>) {
-
-    constructor(
-        textString: String
-    ) : this(
-        Pair(
-            textString.split("[.!?] ?".toRegex()).filter { it.isNotEmpty() }.map { sentence -> Sentence(sentence) }.toTypedArray(),
-            textString.split("(?<=[.!?]) ?".toRegex()).filter { it.isNotEmpty() }.map { sentence -> Punctuation(sentence.last().toString()) }.toTypedArray()
-        )
-    )
-
-    /**
-     * Returns an array of all [Letter] objects in a sentence.
-     */
-    private fun getAllLetters(): Array<Letter> {
-        var allLetters = arrayOf<Letter>()
-        this.textArray.first.forEach { allLetters += it.getAllLetters() }
-        return allLetters
-    }
-
-    /**
-     * Searches for the longest palindromic substring in a given text.
-     *
-     * @return the longest palindromic substring found.
-     */
-    fun palindromeSearch(): String {
-        var result = "  "
-
-        val letters = this.getAllLetters()
-
-        for (leftBoundary in letters.indices) {
-            for (rightBoundary in letters.lastIndex downTo leftBoundary + 1) {
-                val subToC = letters.sliceArray(leftBoundary..rightBoundary)
-
-                if (subToC.first().letterEquals(subToC.last(), true) && this.checkReverse(subToC) && subToC.size > result.length) {
-                    result = subToC.joinToString("")
-                }
-            }
-        }
-
-        return result
-    }
-
-    /**
-     * Checks if a given substring is a palindrome.
-     *
-     * Is not case-sensitive.
-     *
-     * @param substring an [Array] of [Letter] objects representing a substring.
-     *
-     * @return "true" is a substring given is a palindrome, "false" if it isn't.
-     */
-    private fun checkReverse(substring: Array<Letter>): Boolean {
-        var leftBoundary = 0
-        var rightBoundary = substring.lastIndex
-        var result = false
-        val correction = substring.size % 2
-
-        while (leftBoundary < substring.size / 2 && rightBoundary >= substring.size / 2 + correction) {
-            leftBoundary++
-            rightBoundary--
-            result = substring[leftBoundary].letterEquals(substring[rightBoundary], true)
-        }
-
-        return result
-    }
-
-
-    override fun toString(): String {
-        var text = arrayOf<String>()
-        this.textArray.first.indices.forEach { text += this.textArray.first[it].toString() + this.textArray.second[it].toString() }
-        return text.joinToString(" ")
-    }
-}

Java/lab_5/Word.kt

@@ -1,22 +0,0 @@
-package OOP.Java.lab_5
-
-/**
- * A class representing a single word is a sentence.
- *
- * @property letters an array of [Letter] objects that make up a word.
- *
- * @constructor a primary constructor accepts an array of [Letter] objects, a secondary one accepts a string representing the entire word.
- */
-class Word(var letters: Array<Letter>) {
-
-    override fun toString(): String {
-        val wordString = StringBuilder()
-        this.letters.forEach { wordString.append(it) }
-
-        return wordString.toString()
-    }
-
-    constructor(
-        word: String
-    ) : this((word.toCharArray().map { letter -> Letter(letter) }).toTypedArray())
-}

Java/lab_6/Album.kt

@@ -1,33 +0,0 @@
-package OOP.Java.lab_6
-
-import kotlin.time.Duration
-
-/**
- * Represents an album by a specific artist, containing multiple tracks.
- *
- * @property albumName The name of the album.
- * @property artist The artist or band associated with the album.
- * @property tracks An [Array] of tracks included on the album.
- */
-class Album(val albumName: String, val artist: String, val tracks: Array<Track>) {
-
-    /**
-     * Returns an array of tracks within the specified duration range.
-     */
-    fun tracksInDurationRange(durationRange: ClosedRange<Duration>): Array<Track> {
-        return this.tracks.filter { it.duration in durationRange }.toTypedArray()
-    }
-
-    /**
-     * Returns the total duration of all tracks on the album.
-     */
-    fun totalDuration(): Duration {
-        var totalDuration: Duration = Duration.ZERO
-        this.tracks.forEach { totalDuration += it.duration }
-        return totalDuration
-    }
-
-    override fun toString(): String {
-        return "${this.albumName} by ${this.artist}\nTotal duration: ${this.totalDuration()}\nTracks:\n${this.tracks.joinToString("\n")}"
-    }
-}

Java/lab_6/Dancepop.kt

@@ -1,15 +0,0 @@
-package OOP.Java.lab_6
-
-import kotlin.time.Duration
-
-/**
- * Represents a track in the Dance-pop style.
- *
- * @param numberInAlbum The position of the track on the album.
- * @param trackName The name of the track.
- * @param feature The featured artist(s) in the track (nullable if no featured artist).
- * @param duration The [Duration] of the track.
- */
-class Dancepop(numberInAlbum: Int, trackName: String, feature: String?, duration: Duration): Track(numberInAlbum, trackName, feature, duration) {
-    override val style = "Dance-pop"
-}

Java/lab_6/Electropop.kt

@@ -1,15 +0,0 @@
-package OOP.Java.lab_6
-
-import kotlin.time.Duration
-
-/**
- * Represents a track in the Electropop style.
- *
- * @param numberInAlbum The position of the track on the album.
- * @param trackName The name of the track.
- * @param feature The featured artist(s) in the track (nullable if no featured artist).
- * @param duration The [Duration] of the track.
- */
-class Electropop(numberInAlbum: Int, trackName: String, feature: String?, duration: Duration): Track(numberInAlbum, trackName, feature, duration) {
-    override val style = "Electropop"
-}

Java/lab_6/Interlude.kt

@@ -1,15 +0,0 @@
-package OOP.Java.lab_6
-
-import kotlin.time.Duration
-
-/**
- * Represents an interlude track.
- *
- * @param numberInAlbum The position of the track on the album.
- * @param trackName The name of the track.
- * @param feature The featured artist(s) in the track (nullable if no featured artist).
- * @param duration The [Duration] of the track.
- */
-class Interlude(numberInAlbum: Int, trackName: String, feature: String?, duration: Duration): Track(numberInAlbum, trackName, feature, duration) {
-    override val style = "Interlude"
-}

Java/lab_6/Synthpop.kt

@@ -1,15 +0,0 @@
-package OOP.Java.lab_6
-
-import kotlin.time.Duration
-
-/**
- * Represents a track in the Synth-pop style.
- *
- * @param numberInAlbum The position of the track on the album.
- * @param trackName The name of the track.
- * @param feature The featured artist(s) in the track (nullable if no featured artist).
- * @param duration The [Duration] of the track.
- */
-class Synthpop(numberInAlbum: Int, trackName: String, feature: String?, duration: Duration): Track(numberInAlbum, trackName, feature, duration) {
-    override val style = "Synth-pop"
-}

Java/lab_6/Track.kt

@@ -1,27 +0,0 @@
-package OOP.Java.lab_6
-
-import kotlin.time.Duration
-
-/**
- * Represents a track on an album.
- *
- * @param numberInAlbum The position of the track on the album.
- * @param trackName The name of the track.
- * @param feature The featured artist(s) in the track (nullable if no featured artist).
- * @param duration The [Duration] of the track.
- */
-open class Track(val numberInAlbum: Int, val trackName: String, val feature: String?, val duration: Duration) {
-
-    /**
-     * The style or genre of the track.
-     */
-    open val style = ""
-
-    override fun toString(): String {
-        return if (this.feature == null) {
-            "#${this.numberInAlbum}: ${this.trackName} (${this.duration})"
-        } else {
-            "#${this.numberInAlbum}: ${this.trackName} ft. ${this.feature} (${this.duration})"
-        }
-    }
-}

Java/lab_6/main.kt

@@ -1,42 +0,0 @@
-package OOP.Java.lab_6
-
-import kotlin.time.Duration.Companion.minutes
-import kotlin.time.Duration.Companion.seconds
-
-fun main() {
-
-    val chromatica = Album(
-        "Chromatica",
-        "Lady Gaga",
-        arrayOf(
-            Interlude(1, "Chromatica I", null, 1.minutes),
-            Synthpop(2, "Alice", null, 2.minutes + 57.seconds),
-            Dancepop(3, "Stupid Love", null, 3.minutes + 13.seconds),
-            Dancepop(4, "Rain On Me", "Ariana Grande", 3.minutes + 2.seconds),
-            Synthpop(5, "Free Woman", null, 3.minutes + 11.seconds),
-            Electropop(6, "Fun Tonight", null, 2.minutes + 53.seconds),
-            Interlude(7, "Chromatica II", null, 41.seconds),
-            Synthpop(8, "911", null, 2.minutes + 52.seconds),
-            Electropop(9, "Plastic Doll", null, 3.minutes + 41.seconds),
-            Dancepop(10, "Sour Candy", "Blackpink", 2.minutes + 37.seconds),
-            Dancepop(11, "Enigma", null, 2.minutes + 59.seconds),
-            Synthpop(12, "Replay", null, 3.minutes + 6.seconds),
-            Interlude(13, "Chromatica III", null, 27.seconds),
-            Electropop(14, "Sine From Above", "Elton John", 4.minutes + 4.seconds),
-            Synthpop(15, "1000 Doves", null, 3.minutes + 35.seconds),
-            Dancepop(16, "Babylon", null, 2.minutes + 41.seconds)
-        )
-    )
-
-    println("$chromatica\n")
-
-    println("${chromatica.albumName} tracks sorted by musical style:\n${chromatica.tracks.sortedBy { it.style }.joinToString("\n")}\n")
-
-    val durationRange = 1.minutes.. 3.minutes + 30.seconds
-
-    println(
-        "${chromatica.albumName} tracks in a duration range ($durationRange):\n${chromatica.tracksInDurationRange(durationRange).joinToString("\n")}"
-    )
-}
-
-

Rust/lab_1/Cargo.lock

@@ -1,16 +0,0 @@
-# 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

@@ -1,9 +0,0 @@
-[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
-
-[dependencies]
-text_io = "0.1.12"

Rust/lab_1/src/main.rs

@@ -1,22 +0,0 @@
-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

@@ -1,16 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-version = 3
-
-[[package]]
-name = "lab_2"
-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_2/Cargo.toml

@@ -1,9 +0,0 @@
-[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]
-text_io = "0.1.12"

Rust/lab_2/src/main.rs

@@ -1,140 +0,0 @@
-// #[allow(dead_code)]
-fn capitalise(s: &str) -> String {
-    let mut c = s.chars();
-    match c.next() {
-        None => String::new(),
-        Some(f) => f.to_uppercase().collect::<String>() + c.as_str(),
-    }
-}
-
-fn read_row() -> Vec<i16> {
-    loop {
-        print!("Row (separated by spaces): ");
-        let raw_row: String = text_io::read!("{}\n");
-        let trimmed_row: &str = raw_row.trim();
-        match trimmed_row.split(" ").all(|value| {
-            value.chars().all(|char| char.is_numeric() || char == '-')
-                && value.parse::<i32>().unwrap() <= i16::MAX as i32
-                && value.parse::<i32>().unwrap() >= i16::MIN as i32
-        }) {
-            true => {
-                return trimmed_row
-                    .split(" ")
-                    .map(|value| value.parse::<i16>().unwrap())
-                    .collect::<Vec<i16>>()
-            }
-            false => println!("[Error] The row must consist of short integers, try again."),
-        }
-    }
-}
-
-fn generate_row(row_index: u16, length: u16) -> Vec<i16> {
-    return (0..length)
-        .map(|element_index| (element_index as i16 + 1) * (row_index as i16 + 1))
-        .collect();
-}
-
-fn read_matrix() -> Vec<Vec<i16>> {
-    let rows: u16 = protected_u16_read("the number of rows");
-    loop {
-        print!("Generate [s]quare or [r]ectangle matrix or [i]nput manually [s/r/i]: ");
-        let option: String = text_io::read!();
-        match option.to_lowercase().as_str() {
-            "s" => return (0..rows).map(|i| generate_row(i, rows)).collect(),
-            "r" => {
-                let columns: u16 = protected_u16_read("the number of columns");
-                return (0..rows).map(|i| generate_row(i, columns)).collect();
-            }
-            "i" => return (0..rows).map(|_| read_row()).collect(),
-            _ => println!("[Error] Not an option, try again."),
-        }
-    }
-}
-
-fn protected_u16_read(variable_name: &str) -> u16 {
-    use text_io::try_read;
-    loop {
-        print!("Enter {}: ", variable_name);
-        let read_result: Result<u16, _> = try_read!();
-        match read_result {
-            Ok(read_integer) => return read_integer,
-            Err(_e) => println!(
-                "{} must be a short integer, try again.",
-                capitalise(variable_name)
-            ),
-        }
-    }
-}
-
-fn multiply_matrix_by_number(matrix: &Vec<Vec<i16>>, multiplier: u16) -> Vec<Vec<i16>> {
-    return matrix
-        .iter()
-        .map(|row| {
-            row.iter()
-                .map(|element| element * multiplier as i16)
-                .collect()
-        })
-        .collect();
-}
-
-fn average_of_row(row: &Vec<i16>) -> f32 {
-    return row.iter().sum::<i16>() as f32 / row.len() as f32;
-}
-
-fn format_matrix(matrix: &Vec<Vec<i16>>) -> String {
-    let max_width = matrix
-        .iter()
-        .map(|row| {
-            row.iter()
-                .map(|element| element.to_string().len())
-                .max()
-                .unwrap()
-        })
-        .max()
-        .unwrap();
-
-    let mut formatted_matrix: String = matrix
-        .iter()
-        .map(|row| {
-            row.iter()
-                .map(|element| format!("| {:max_width$} ", element))
-                .collect::<Vec<String>>()
-                .join("")
-        })
-        .collect::<Vec<String>>()
-        .join("|\n");
-    formatted_matrix.push('|');
-    return formatted_matrix;
-}
-
-fn format_column(column: &Vec<f32>) -> String {
-    let max_width = column
-        .iter()
-        .map(|element| element.to_string().len())
-        .max()
-        .unwrap();
-
-    return column
-        .iter()
-        .map(|element| format!("| {:max_width$} |", element))
-        .collect::<Vec<String>>()
-        .join("\n");
-}
-
-fn main() {
-    let full_vec_test: Vec<Vec<i16>> = read_matrix();
-    println!("\nMatrix B:\n{}\n", format_matrix(&full_vec_test));
-
-    let mult_full_vec_test: Vec<Vec<i16>> =
-        multiply_matrix_by_number(&full_vec_test, protected_u16_read("matrix multiplier"));
-    println!("Matrix a×B:\n{}\n", format_matrix(&mult_full_vec_test));
-
-    let row_averages: Vec<f32> = mult_full_vec_test
-        .iter()
-        .map(|row| average_of_row(row))
-        .collect();
-    println!(
-        "Averages for each row in a×B:\n{}",
-        format_column(&row_averages)
-    );
-}

lab1/lab1.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

lab1/src/Main.java

@@ -0,0 +1,21 @@
+public class Main {
+
+    public static void main(String[] args) {
+        float s = 0.0f, a = 2.0f, b = 1.0f, m = 6.0f, n = 4.0f;
+        int c = 1;
+
+        for (float i = a; i <= m; i++) {
+            // Перевірка ділення на 0.
+            if (i == -1) {
+                System.out.println("Помилка: ділення на нуль не можливе.");
+                return;
+            }
+            for (float j = b; j <= n; j++) {
+                s += (i + j) / (i + c);
+            }
+        }
+
+        System.out.println("S = " + s);
+    }
+
+}

lab2/lab2.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

lab2/src/Main.java

@@ -0,0 +1,59 @@
+public class Main {
+
+    public static void main(String[] args) {
+
+        // Створення матриць.
+        char[][] a = {
+                {12, 4, 8, 11},
+                {16, 9, 3, 13},
+                {7, 11, 16, 15}
+        };
+        char[][] b = {
+                {15, 12, 4, 5},
+                {19, 1, 3, 11},
+                {2, 11, 6, 10}
+        };
+
+        System.out.println("Матриця A: ");
+        for (char[] i : a) {
+            for (char j : i) {
+                /* При виведенні елементів ми додаємо пробіли на кінці
+                цілого числа (%-4d) задля легшого читання матриці.
+                */
+                System.out.printf("%-4d", (int) j);
+            }
+            System.out.println();
+        }
+
+        System.out.println("\nМатриця B: ");
+        for (char[] i : b) {
+            for (char j : i) {
+                System.out.printf("%-4d", (int) j);
+            }
+            System.out.println();
+        }
+
+        // Перевірка на те, чи є матриці однакових форм.
+        if (a[0].length != b[0].length || a.length != b.length) {
+            System.out.println("Матриці А і В мають різні форми.");
+        } else {
+            int[][] c = new int[a.length][a[0].length];
+            float sum = 0;
+
+            System.out.println("\nМатриця С: ");
+            for (int i = 0; i < a.length; i++) {
+                for (int j = 0; j < a[i].length; j++) {
+
+                    c[i][j] = (byte) a[i][j] ^ (byte) b[i][j];
+                    sum += c[i][j];
+                    System.out.printf("%-4d", c[i][j]);
+                }
+                System.out.println();
+            }
+
+            float average = sum / (c.length * c[0].length);
+            System.out.printf("\nСереднє значення матриці С: %.3f", average);
+        }
+    }
+
+}

lab3/lab3.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

lab3/src/Main.java

@@ -0,0 +1,54 @@
+import java.util.Arrays;
+import java.util.Scanner;
+
+public class Main {
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        StringBuffer text = new StringBuffer(scanner.nextLine());
+        String str_text = text.toString();
+        // Заміна ? й ! на .
+        str_text = str_text.replaceAll("[?!]", ".");
+        // Очищення від спеціальних символів.
+        str_text = str_text.replaceAll("\"", "");
+        str_text = str_text.replaceAll("-", "");
+        str_text = str_text.replaceAll("[,':;^*&%$#@]", "");
+        // Створення масиву з речень.
+        String[] spl_text = str_text.split("\\.");
+
+        // Перевірка на кількість речень.
+        if (spl_text.length == 0 || spl_text.length == 1) {
+            System.out.println("Не вдалося виконати дію з рядками (було введено одне речення або взагалі нічого)");
+            return;
+        }
+
+        System.out.println("Слова першого речення, яких немає у жодному з наступних:");
+        for (String st : spl_text[0].split(" ")) {
+            int index = 0;
+            for (int i = 1; i < spl_text.length; i++) {
+                // Усунення кейсу з регістром, усунення пробілів.
+                if (Arrays.asList(spl_text[i].toLowerCase().trim().split(" ")).contains(st.trim().toLowerCase())) {
+                    index = 1;
+                    break;
+                }
+            }
+            // Перевірка на те, чи було дане слово хоча б в одному реченні.
+            if (index == 0) {
+                System.out.println(st.trim().toLowerCase());
+            }
+        }
+    }
+
+}
+
+/* [Input]
+"У молодості я взяв собі за правило не пити ні краплі спиртного до обіду. Тепер, коли я вже немолодий, я тримаюся правила не пити ні краплі спиртного до сніданку". - Вінстон Черчилль
+   [Output]
+у
+молодості
+взяв
+собі
+за
+правило
+обіду
+ */

lab4/lab4.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

lab4/src/lab4/Main.java

@@ -0,0 +1,40 @@
+package lab4;
+
+import java.util.Arrays;
+
+public class Main {
+
+    public static void main(String[] args) {
+
+        // Створення об'єктів класу Student.
+        Student First = new Student("Михайло", "Гордун", 21, "ІПСА", true);
+        Student Second = new Student("Дмитро", "Шарій", 19, "ТЕФ", false);
+        Student Third = new Student("Аліна", "Шарій", 18, "ЕФ", false);
+        Student Fourth = new Student("Назар", "Лоленко", 17, "ФІОТ", true);
+        Student Fifth = new Student("Олександра", "Зеленська", 18, "ФМВ", true);
+
+        // Створення масиву об'єктів класу Student.
+        Student[] ObjArray = new Student[] {First, Second, Third, Fourth, Fifth};
+
+        // Сортування по алфавіту (прізвище ім'я).
+        Arrays.sort(ObjArray, new Sorting.SortByAlphabet());
+        System.out.println("\nСортування за алфавітом (зростання):");
+        for (Student Student : ObjArray) {
+            System.out.println(Student.lastName + " " + Student.firstName);
+        }
+
+        /* Сортування по віці (спадання).
+        Масив сортує масив по зростанню, але в циклі ітерація
+        проходить навпаки, тим самим виводячи елементи з кінця
+        до початку.
+        */
+        Arrays.sort(ObjArray, new Sorting.SortByAge());
+        System.out.println("\nСортування за віком (спадання):");
+        for (int i = ObjArray.length-1; i >= 0; i--) {
+            System.out.print(ObjArray[i].lastName + " ");
+            System.out.print(ObjArray[i].firstName);
+            System.out.println(", вік: " + ObjArray[i].age);
+        }
+    }
+
+}

lab4/src/lab4/Sorting.java

@@ -0,0 +1,52 @@
+package lab4;
+
+import java.util.Comparator;
+
+public class Sorting {
+
+    // Непорушний клас, створений на основі абстратного класу Comparator.
+    public static class SortByAlphabet implements Comparator<Student> {
+
+        /* Реалізація методу compare().
+        Метод compare(Object o1, Object 02) є одним із абстрактних методів
+        класу Comparator. Нам потрібно або зробити наш клас абстактним, або
+        реалізувати даний метод. Якщо ж оголосити клас SortByAlphabet
+        абстрактним, ми не зможемо створити на основі його об'єкт, тому
+        вибір очевидний - реалізація методу.
+        */
+        @Override
+        public int compare(Student st1, Student st2) {
+            /* Якщо в нас буде 2 однакових прізвища на порівняння, нам потрібно
+            порівнювати імена аби сортування по алфавіту було правильним.
+            */
+            if (st1.lastName.compareTo(st2.lastName) == 0) {
+                return st1.firstName.compareTo(st2.firstName);
+            } else {
+                return st1.lastName.compareTo(st2.lastName);
+            }
+        }
+
+    }
+
+    // Непорушний клас, створений на основі абстратного класу Comparator.
+    public static class SortByAge implements Comparator<Student> {
+
+        // Аналогічно тут, реалізуємо метод compare().
+        @Override
+        public int compare(Student st1, Student st2) {
+            /* Метод compareTo() приймає лише дані типу String, тому
+            ми перетворюємо вік з int в String. Звісно ж це може привести
+            до неточності. Числа будуть порівнюватись спочатку по перших
+            цифрах, потім по других і тд. Якщо в нас буде, наприклад вік
+            107 і 18 на порівнянні, прогрма порахує, що 18 > 107 по
+            порядку. Тут цим знехтується, адже я сумніваюсь що існують
+            студенти яким >100 років.
+            */
+            String age1 = Integer.toString(st1.age);
+            String age2 = Integer.toString(st2.age);
+            return age1.compareTo(age2);
+        }
+
+    }
+
+}

lab4/src/lab4/Student.java

@@ -0,0 +1,44 @@
+package lab4;
+
+public class Student {
+
+    // Створення полів класу.
+    public String firstName;
+    public String lastName;
+    public int age;
+    private String faculty;
+    private boolean hasStipend;
+
+    // Конструктор класу.
+    public Student(String fn, String ln, int age, String fac, boolean wealth) {
+        setValues(fn, ln, age, fac, wealth);
+        getValues();
+    }
+
+    /* Метод, який нічого не повертає.
+    Визначає поля класу.
+    */
+    private void setValues(String fn, String ln, int age, String fac, boolean wealth) {
+        this.firstName = fn;
+        this.lastName = ln;
+        this.age = age;
+        this.faculty = fac;
+        this.hasStipend = wealth;
+    }
+
+    /* Метод, який нічого не повертає.
+    Виводить значення полів.
+    */
+    private void getValues() {
+        System.out.println("Прізвище та ім'я: " + this.lastName + " " + this.firstName);
+        System.out.println("Вік: " + this.age);
+        System.out.println("Факультет: " + this.faculty);
+        System.out.print("Наявність стипендії: ");
+        if (this.hasStipend)
+            System.out.println("є");
+        else
+            System.out.println("немає");
+        System.out.println("~".repeat(40));
+    }
+
+}

lab5/lab5.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

lab5/src/lab5/Letter.java

@@ -0,0 +1,5 @@
+package lab5;
+
+public record Letter(char value) {
+
+}

lab5/src/lab5/Main.java

@@ -0,0 +1,38 @@
+package lab5;
+
+import java.util.*;
+
+public class Main {
+
+    public static void main(String[] args) {
+        String inputText = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam tempor dictum velit, vitae sollicitudin mauris facilisis et. Praesent mi odio, pretium eget sem ac, ultricies eleifend elit. Maecenas vulputate efficitur risus, a ornare lorem sollicitudin vitae. Pellentesque rhoncus posuere risus eu placerat. Maecenas luctus felis ac interdum sodales. Quisque nec est lectus.";
+
+        // Створений Text об'єкт
+        Text text = new Text(inputText);
+
+        // Пошук у першому реченні слів, яких немає в наступних реченнях
+        List<String> result = findUniqueWords(text);
+        System.out.println("Unique words in the first sentence: " + result);
+    }
+
+    public static List<String> findUniqueWords(Text text) {
+        if (text.getSentences().isEmpty()) {
+            throw new IllegalArgumentException("Text must contain at least one sentence.");
+        }
+
+        Sentence firstSentence = text.getSentences().get(0);
+        List<String> wordsInFirstSentence = firstSentence.getStringWords();
+
+        Set<String> uniqueWords = new HashSet<>(wordsInFirstSentence);
+
+        for (int i = 1; i < text.getSentences().size(); i++) {
+            Sentence sentence = text.getSentences().get(i);
+            List<String> wordsInCurrentSentence = sentence.getStringWords();
+
+            wordsInCurrentSentence.forEach(uniqueWords::remove);
+        }
+
+        return new ArrayList<>(uniqueWords);
+    }
+
+}

lab5/src/lab5/Punctuation.java

@@ -0,0 +1,5 @@
+package lab5;
+
+public record Punctuation(char value) {
+
+}

lab5/src/lab5/Sentence.java

@@ -0,0 +1,62 @@
+package lab5;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Sentence {
+    private final List<Object> wordsAndPunctuations;
+
+    public Sentence(String stringSentence) {
+        List<Object> wordsAndPunctuations = new ArrayList<>();
+        StringBuilder word = new StringBuilder();
+
+        for (int i = 0; i < stringSentence.length(); i++) {
+            char ch = stringSentence.charAt(i);
+
+            if (Character.isLetterOrDigit(ch)) {
+                word.append(ch);
+            } else if (Character.isWhitespace(ch)) {
+                if (word.length() > 0) {
+                    wordsAndPunctuations.add(new Word(word.toString()));
+                    word.setLength(0);
+                }
+            } else if (String.valueOf(ch).matches(".*\\p{Punct}.*")) {
+                if (word.length() > 0) {
+                    wordsAndPunctuations.add(new Word(word.toString()));
+                    word.setLength(0);
+                }
+                wordsAndPunctuations.add(new Punctuation(ch));
+            }
+        }
+
+        if (word.length() > 0) {
+            wordsAndPunctuations.add(new Word(word.toString()));
+        }
+
+        this.wordsAndPunctuations = wordsAndPunctuations;
+    }
+
+    public List<Object> getWordsAndPunctuations() {
+        return wordsAndPunctuations;
+    }
+
+
+    public List<Word> extractWords() {
+        List<Word> words = new ArrayList<>();
+        for (Object element : getWordsAndPunctuations()) {
+            if (element instanceof Word) {
+                words.add((Word) element);
+            }
+        }
+        return words;
+    }
+
+    public List<String> getStringWords() {
+        List<String> wordStrings = new ArrayList<>();
+        for (Word word : extractWords()) {
+            wordStrings.add(word.getStringWord());
+        }
+        return wordStrings;
+    }
+
+}

lab5/src/lab5/Text.java

@@ -0,0 +1,21 @@
+package lab5;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Text {
+    private final List<Sentence> sentences;
+
+    public Text(String stringText) {
+        this.sentences = new ArrayList<>();
+        String[] splitText = stringText.split("(?<=[!.?])\\s*");
+        for (String sentence : splitText) {
+            getSentences().add(new Sentence(sentence));
+        }
+    }
+
+    public List<Sentence> getSentences() {
+        return sentences;
+    }
+
+}

lab5/src/lab5/Word.java

@@ -0,0 +1,28 @@
+package lab5;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Word {
+    private final String stringWord;
+    private final List<Letter> letters;
+
+    public Word(String stringWord) {
+        List<Letter> letters = new ArrayList<>();
+        char[] chars = stringWord.toCharArray();
+        for (char c : chars) {
+            letters.add(new Letter(c));
+        }
+        this.letters = letters;
+        this.stringWord = stringWord;
+    }
+
+    public List<Letter> getLetters() {
+        return letters;
+    }
+
+    public String getStringWord() {
+        return stringWord;
+    }
+
+}

lab6/lab6.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

lab6/src/lab6/Bmw.java

@@ -0,0 +1,17 @@
+package lab6;
+
+public class Bmw extends Car {
+
+    public String mark = "BMW";
+
+    public Bmw(String _model, float speed, int price, int year, float fuel, float engineCapacity, String country) {
+        super(_model, speed, price, year, fuel, engineCapacity, country);
+    }
+
+    @Override
+    public void printValues() {
+        System.out.println("Марка: BMW");
+        super.printValues();
+    }
+
+}

lab6/src/lab6/Car.java

@@ -0,0 +1,40 @@
+package lab6;
+
+import java.util.Comparator;
+
+public class Car {
+
+    protected String _model;
+    protected float speed;
+    protected int price;
+    protected int year;
+    protected float fuel;
+    protected float engineCapacity;
+    protected String country;
+
+    public Car(String _model, float speed, int price, int year, float fuel, float engineCapacity, String country) {
+        setValues(_model, speed, price, year, fuel, engineCapacity, country);
+        printValues();
+    }
+
+    public void setValues(String _m, float s, int p, int y, float f, float e, String c) {
+        this._model = _m;
+        this.speed = s;
+        this.price = p;
+        this.year = y;
+        this.fuel = f;
+        this.engineCapacity = e;
+        this.country = c;
+    }
+
+    public void printValues() {
+        System.out.println("Модель: " + _model + " " + year);
+        System.out.println("Максимальна швидкість: " + speed + "км/год");
+        System.out.println("Ціна: " + price + "$");
+        System.out.println("Витрати палива: " + fuel + "л/100км");
+        System.out.println("Об'єм двигуна: " + engineCapacity);
+        System.out.println("Країна-виробник: " + country);
+        System.out.println("~".repeat(40));
+    }
+
+}

lab6/src/lab6/Ford.java

@@ -0,0 +1,17 @@
+package lab6;
+
+public class Ford extends Car {
+
+    public String mark = "Ford";
+
+    public Ford(String _model, float speed, int price, int year, float fuel, float engineCapacity, String country) {
+        super(_model, speed, price, year, fuel, engineCapacity, country);
+    }
+
+    @Override
+    public void printValues() {
+        System.out.println("Марка: Ford");
+        super.printValues();
+    }
+
+}

lab6/src/lab6/Lexus.java

@@ -0,0 +1,17 @@
+package lab6;
+
+public class Lexus extends Car {
+
+    public String mark = "Lexus";
+
+    public Lexus(String _model, float speed, int price, int year, float fuel, float engineCapacity, String country) {
+        super(_model, speed, price, year, fuel, engineCapacity, country);
+    }
+
+    @Override
+    public void printValues() {
+        System.out.println("Марка: Lexus\nМатеринська компанія: Toyota");
+        super.printValues();
+    }
+
+}

lab6/src/lab6/Main.java

@@ -0,0 +1,55 @@
+package lab6;
+
+/*
+Номер заліковї книжки - 2518.
+
+Завдання:
+9)Визначити ієрархію легкових автомобілів. Створити таксопарк.
+Порахувати вартість автопарку. Провести сортування автомобілів
+парку за витратами палива. Знайти автомобіль у компанії, що
+відповідає заданому діапазону швидкості автомобіля.
+ */
+
+import java.util.Scanner;
+
+public class Main {
+
+    public static void main(String[] args) {
+        System.out.println(" ".repeat(15) + "Таксопарк" + " ".repeat(15));
+        System.out.println("~".repeat(40));
+
+        Volkswagen Car1 = new Volkswagen("Golf 4", 224, 5000, 2001, 6.8f, 1.6f, "Німеччина");
+        Volkswagen Car2 = new Volkswagen("Passat", 240, 15000, 2007, 7.0f, 2.0f, "Німеччина");
+        Toyota Car3 = new Toyota("Prius", 231, 12500, 2014, 4.3f, 1.8f, "Японія");
+        Peguot Car4 = new Peguot("308", 220, 12000, 2007, 6.1f, 1.6f, "Франція");
+        Lexus Car5 = new Lexus("LS", 250, 80000, 2022, 10.9f, 3.5f, "Японія");
+        Skoda Car6 = new Skoda("Octavia", 220, 25000, 2022, 6.2f, 1.5f, "Чехія");
+        Ford Car7 = new Ford("Focus", 242, 7800, 2014, 6.9f, 2.0f, "США");
+        Bmw Car8 = new Bmw("5-Series", 250, 50000, 2018, 8.3f, 3.0f, "Німеччина");
+        Car[] CarList = new Car[] {Car1, Car2, Car3, Car4, Car5, Car6, Car7, Car8};
+        /*
+        Використовується лямбда функція, щоб описати компаратор в Arrays.sort().
+         */
+        java.util.Arrays.sort(CarList, (a, b) -> Float.compare(a.fuel, b.fuel));
+
+        System.out.println("Сортування автомобілів за витратами палива:");
+        for (Car Car : CarList) {
+            System.out.println(Car._model + ": " + Car.fuel + "л/100км");
+        }
+
+        Scanner scanner = new Scanner(System.in);
+        System.out.print("\nВведіть діапазон швидкості автомобіля:\nвід ");
+        float speed_down = scanner.nextFloat();
+        System.out.print("до ");
+        float speed_up = scanner.nextFloat();
+        System.out.println("Автомобілі із заданою швидкістю:");
+        for (Car Car : CarList) {
+            if ((Car.speed >= speed_down) && (Car.speed <= speed_up)) {
+
+                System.out.println(Car._model + ": " + Car.speed + " км/год");
+            }
+        }
+    }
+
+}
+

lab6/src/lab6/Peguot.java

@@ -0,0 +1,17 @@
+package lab6;
+
+public class Peguot extends Car {
+
+    public String mark = "Peguot";
+
+    public Peguot(String _model, float speed, int price, int year, float fuel, float engineCapacity, String country) {
+        super(_model, speed, price, year, fuel, engineCapacity, country);
+    }
+
+    @Override
+    public void printValues() {
+        System.out.println("Марка: Peguot");
+        super.printValues();
+    }
+
+}

lab6/src/lab6/Skoda.java

@@ -0,0 +1,17 @@
+package lab6;
+
+public class Skoda extends Car {
+
+    public String mark = "Skoda";
+
+    public Skoda(String _model, float speed, int price, int year, float fuel, float engineCapacity, String country) {
+        super(_model, speed, price, year, fuel, engineCapacity, country);
+    }
+
+    @Override
+    public void printValues() {
+        System.out.println("Марка: Skoda\nМатеринська компанія: Volkswagen");
+        super.printValues();
+    }
+
+}

lab6/src/lab6/Toyota.java

@@ -0,0 +1,17 @@
+package lab6;
+
+public class Toyota extends Car {
+
+    public String mark = "Toyota";
+
+    public Toyota(String _model, float speed, int price, int year, float fuel, float engineCapacity, String country) {
+        super(_model, speed, price, year, fuel, engineCapacity, country);
+    }
+
+    @Override
+    public void printValues() {
+        System.out.println("Марка: Toyota");
+        super.printValues();
+    }
+
+}

lab6/src/lab6/Volkswagen.java

@@ -0,0 +1,17 @@
+package lab6;
+
+public class Volkswagen extends Car {
+
+    public String mark = "Volkswagen";
+
+    public Volkswagen(String _model, float speed, int price, int year, float fuel, float engineCapacity, String country) {
+        super(_model, speed, price, year, fuel, engineCapacity, country);
+    }
+
+    @Override
+    public void printValues() {
+        System.out.println("Марка: Volkswagen");
+        super.printValues();
+    }
+
+}

lab7/lab7.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

lab7/src/lab7/Car.java

@@ -0,0 +1,42 @@
+package lab7;
+
+public class Car {
+
+    protected String mark;
+    protected String model;
+    protected int price;
+    protected int year;
+    protected float fuel;
+
+    public Car(String mark, String model, int price, int year, float fuel) {
+        setValues(mark, model, price, year, fuel);
+    }
+
+//    Цей конструктор був створений окремо для класу ElectricCar
+    public Car(String mark, String model, int price, int year) {
+        setValues(mark, model, price, year);
+    }
+
+    public void setValues(String mark, String model, int price, int year, float fuel) {
+        this.mark = mark;
+        this.model = model;
+        this.price = price;
+        this.year = year;
+        this.fuel = fuel;
+    }
+
+    public void setValues(String mark, String model, int price, int year) {
+        this.mark = mark;
+        this.model = model;
+        this.price = price;
+        this.year = year;
+    }
+
+    public void printValues() {
+        System.out.println("Марка: " + mark);
+        System.out.println("Модель: " + model + " " + year);
+        System.out.println("Ціна: " + price + "$");
+        System.out.println("Витрати палива: " + fuel + "л/100км");
+    }
+
+}

lab7/src/lab7/CarCollection.java

@@ -0,0 +1,137 @@
+package lab7;
+
+import java.util.*;
+
+public class CarCollection<T extends Car> implements List<T> {
+    private final LinkedList<T> carList;
+
+    public CarCollection() {
+        carList = new LinkedList<>();
+    }
+
+    public CarCollection(T car) {
+        carList = new LinkedList<>();
+        carList.add(car);
+    }
+
+    public CarCollection(Collection<? extends T> c) {
+        carList = new LinkedList<>(c);
+    }
+
+    //  Реалізація методів List
+    @Override
+    public int size() {
+        return carList.size();
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return carList.isEmpty();
+    }
+
+    @Override
+    public boolean contains(Object o) {
+        return carList.contains(o);
+    }
+
+    @Override
+    public Iterator<T> iterator() {
+        return carList.iterator();
+    }
+
+    @Override
+    public Object[] toArray() {
+        return carList.toArray();
+    }
+
+    @Override
+    public <T1> T1[] toArray(T1[] a) {
+        return carList.toArray(a);
+    }
+
+    @Override
+    public boolean add(T t) {
+        return carList.add(t);
+    }
+
+    @Override
+    public boolean remove(Object o) {
+        return carList.remove(o);
+    }
+
+    @Override
+    public boolean containsAll(Collection<?> c) {
+        return carList.containsAll(c);
+    }
+
+    @Override
+    public boolean addAll(Collection<? extends T> c) {
+        return carList.addAll(c);
+    }
+
+    @Override
+    public boolean addAll(int index, Collection<? extends T> c) {
+        return carList.addAll(index, c);
+    }
+
+    @Override
+    public boolean removeAll(Collection<?> c) {
+        return carList.removeAll(c);
+    }
+
+    @Override
+    public boolean retainAll(Collection<?> c) {
+        return carList.retainAll(c);
+    }
+
+    @Override
+    public void clear() {
+        carList.clear();
+    }
+
+    @Override
+    public T get(int index) {
+        return carList.get(index);
+    }
+
+    @Override
+    public T set(int index, T element) {
+        return carList.set(index, element);
+    }
+
+    @Override
+    public void add(int index, T element) {
+        carList.add(index, element);
+    }
+
+    @Override
+    public T remove(int index) {
+        return carList.remove(index);
+    }
+
+    @Override
+    public int indexOf(Object o) {
+        return carList.indexOf(o);
+    }
+
+    @Override
+    public int lastIndexOf(Object o) {
+        return carList.lastIndexOf(o);
+    }
+
+    @Override
+    public ListIterator<T> listIterator() {
+        return carList.listIterator();
+    }
+
+    @Override
+    public ListIterator<T> listIterator(int index) {
+        return carList.listIterator(index);
+    }
+
+    @Override
+    public List<T> subList(int fromIndex, int toIndex) {
+        return carList.subList(fromIndex, toIndex);
+    }
+
+}

lab7/src/lab7/CombatsCar.java

@@ -0,0 +1,29 @@
+package lab7;
+
+public class CombatsCar extends Car {
+
+    private final int crew;
+    private final float weight;
+    private final String country;
+
+    public CombatsCar(String mark, String model, int price, int year, float fuel, int crew, float weight, String country) {
+        super(mark, model, price, year, fuel);
+        this.crew = crew;
+        this.weight = weight;
+        this.country = country;
+    }
+
+    public String getCountry() {
+        return country;
+    }
+
+    public void printValues() {
+        super.printValues();
+        System.out.println("--- Особливості бойової машини ---");
+        System.out.println("Екіпаж: " + crew + " людей");
+        System.out.println("Бойова маса: " + weight + "т");
+        System.out.println("Країна-виробник: " + country);
+
+    }
+
+}

lab7/src/lab7/ElectricCar.java

@@ -0,0 +1,25 @@
+package lab7;
+
+public class ElectricCar extends Car {
+
+    private final float electricity;
+    private final float chargingSpeed;
+
+    public ElectricCar(String mark, String model, int price, int year, float electricity, int chargingSpeed) {
+        super(mark, model, price, year);
+        this.electricity = electricity;
+        this.chargingSpeed = chargingSpeed;
+    }
+
+    public float getElectricity() {
+        return electricity;
+    }
+
+    public void printValues() {
+        super.printValues();
+        System.out.println("-Особливості електрокару-");
+        System.out.println("Споживання електроенергії: " + electricity + " кВт·год/100км");
+        System.out.println("Швидкість зарядки (з 0% до 100%): " + chargingSpeed + " хв");
+    }
+
+}

lab7/src/lab7/Main.java

@@ -0,0 +1,73 @@
+package lab7;
+
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.Scanner;
+
+public class Main {
+
+    public static void main(String[] args) {
+
+//        Використання пустого конструктора CarCollection
+        CarCollection<SportsCar> sportsCars = new CarCollection<>();
+        sportsCars.add(new SportsCar("Ferrari", "458 Italia", 230000, 2015, 9.8f, 562, 202, 4.5f));
+        sportsCars.add(new SportsCar("Lamborghini", "Huracan", 260000, 2020, 9.5f, 640, 211, 5.2f));
+        sportsCars.add(new SportsCar("Porsche", "911", 150000, 2018, 14.3f, 450, 191, 3.0f));
+        sportsCars.add(new SportsCar("McLaren", "570S", 200000, 2017, 11.2f, 562, 204, 3.8f));
+        sportsCars.add(new SportsCar("Aston Martin", "Vantage", 150000, 2021, 12.3f, 503, 195, 4.0f));
+
+//        Сортування спорткарів за ціною
+        System.out.println("~~~~~ Відсортовані спорткари за ціною ~~~~~");
+        sportsCars.sort(Comparator.comparingInt(SportsCar::getPrice));
+
+        for (int i = sportsCars.size() - 1; i >= 0; i--) {
+            sportsCars.get(i).printValues();
+            System.out.println();
+        }
+
+//        Використання конструктора CarCollection з передаванням в його лише один об'єкт
+        CarCollection<CombatsCar> combatsCars = new CarCollection<>(new CombatsCar("Humvee", "M1114", 220000, 1995, 6.5f, 4, 5.5f, "США"));
+        combatsCars.add(new CombatsCar("Puma", "IFV", 3500000, 2010, 10.7f, 6, 31f, "Німеччина"));
+        combatsCars.add(new CombatsCar("Warrior", "IFV", 4500000, 1988, 12.4f, 3, 29f, "Великобританія"));
+        combatsCars.add(new CombatsCar("ZBD", "05", 1200000, 2011, 9.4f, 4, 25f, "Китай"));
+        combatsCars.add(new CombatsCar("VBCI", "IFV", 5000000, 2008, 10.7f, 8, 32f, "Франція"));
+
+//        Пошук бойової машини за країною-виробником
+        Scanner scanner = new Scanner(System.in);
+        System.out.print("Введіть країну-виробницю бойової машини: ");
+        String userCountry = scanner.nextLine();
+
+        System.out.println("Результати пошуку:\n");
+        for (CombatsCar car : combatsCars) {
+            if (car.getCountry().equals(userCountry)) {
+                car.printValues();
+            }
+        }
+
+        ArrayList<ElectricCar> electricCarsList = new ArrayList<>();
+        electricCarsList.add(new ElectricCar("Tesla", "Model S", 80000, 2022, 21.5f, 45));
+        electricCarsList.add(new ElectricCar("Chevrolet", "Bolt", 35000, 2021, 28.0f, 60));
+        electricCarsList.add(new ElectricCar("Nissan", "Leaf", 32000, 2021, 24.0f, 40));
+        electricCarsList.add(new ElectricCar("BMW", "i3", 45000, 2021, 19.5f, 30));
+        electricCarsList.add(new ElectricCar("Hyundai", "Kona", 42000, 2022, 22.0f, 50));
+
+//        Використання конструктора CarCollection з передаванням в його колекцію об'єктів
+        CarCollection<ElectricCar> electricCars = new CarCollection<>(electricCarsList);
+
+//        Пошук автомобіля по діапазону споживання електроенергії
+        System.out.println("\nВведіть діапазон споживання електроенергії (кВт·год/100км):");
+        System.out.print("від ");
+        float electricityLowerLimit = scanner.nextFloat();
+        System.out.print("до ");
+        float electricityUpperLimit = scanner.nextFloat();
+
+        System.out.println("Результати пошуку:\n");
+        for (ElectricCar car : electricCars) {
+            if (car.getElectricity() < electricityUpperLimit & car.getElectricity() > electricityLowerLimit) {
+                car.printValues();
+            }
+        }
+
+    }
+
+}

lab7/src/lab7/SportsCar.java

@@ -0,0 +1,28 @@
+package lab7;
+
+public class SportsCar extends Car {
+
+    private final int power;
+    private final float speed;
+    private final float engineCapacity;
+
+    public SportsCar(String mark, String model, int price, int year, float fuel, int power, float speed, float engineCapacity) {
+        super(mark, model, price, year, fuel);
+        this.power = power;
+        this.speed = speed;
+        this.engineCapacity = engineCapacity;
+    }
+
+    public int getPrice() {
+        return price;
+    }
+
+    public void printValues() {
+        super.printValues();
+        System.out.println("-Особливості спорткару-");
+        System.out.println("Потужість: " + power + " кінських сил");
+        System.out.println("Максимальна швидкість: " + speed + " км/год");
+        System.out.println("Об'єм двигуна: " + engineCapacity + "л");
+    }
+
+}