added lab 1, lab 2

This reverts commit 29e63163a4.

.idea/misc.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_18" default="true" project-jdk-name="openjdk-18" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_19" default="true" project-jdk-name="openjdk-18" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>

Lab4.java

@@ -1,68 +0,0 @@
-import java.util.Scanner;
-import java.util.Arrays;
-import java.util.Comparator;
-
-public class Lab4 {
-
-    public static void main(String[] args) {
-        Students student1 = new Students("Максим", 22, "ФІОТ", 91, 8);
-        Students students2 = new Students("Ольга", 19, "ФЕА", 34, 4);
-        Students students3 = new Students("Владислав", 18, "ФММ", 55, 10);
-        Students students4 = new Students("Марія", 20, "ХТФ", 11, 6);
-        Students students5 = new Students("Петро", 23, "ФМФ", 78, 2);
-        Students[] students = {student1, students2, students3, students4, students5};
-        System.out.println("Список студентів: ");
-        System.out.println(String.format("%-9s | %-3s | %-9s | %-11s | %s", "Ім'я", "Вік", "Факультет", "Номер групи", "Рівень знань(від 0 до 10)"));
-        for (Students student : students) {
-            System.out.println(String.format("%-9s | %-3s | %-9s | %-11s | %s", student.getName(), student.getAge(), student.getNameOfFaculty(), student.getNumberOfGroup(), student.getLvlOfKnowledge()));
-        }
-        Scanner scan = new Scanner(System.in);
-        System.out.println("Введіть за чим сортувати: ");
-        System.out.println("1 - Зростання \n2 - Спадання:");
-        int incOrDec = scan.nextInt();
-        System.out.println("Введіть за чим хочете сортувати: ");
-        System.out.println("1 - Ім'я \n2 - Вік \n3 - Факультет\n4 - Група\n5 - Рівень знань: ");
-        int num = scan.nextInt();
-        if (incOrDec == 1) {
-            switch (num) {
-                case 1:
-                    Arrays.sort(students, Comparator.comparing(Students::getName));
-                    break;
-                case 2:
-                    Arrays.sort(students, Comparator.comparingInt(Students::getAge));
-                    break;
-                case 3:
-                    Arrays.sort(students, Comparator.comparing(Students::getNameOfFaculty));
-                    break;
-                case 4:
-                    Arrays.sort(students, Comparator.comparingInt(Students::getNumberOfGroup));
-                    break;
-                case 5:
-                    Arrays.sort(students, Comparator.comparingInt(Students::getLvlOfKnowledge));
-                    break;
-            }
-        } else {
-            switch (num) {
-                case 1:
-                    Arrays.sort(students, Comparator.comparing(Students::getName).reversed());
-                    break;
-                case 2:
-                    Arrays.sort(students, Comparator.comparingInt(Students::getAge).reversed());
-                    break;
-                case 3:
-                    Arrays.sort(students, Comparator.comparing(Students::getNameOfFaculty).reversed());
-                    break;
-                case 4:
-                    Arrays.sort(students, Comparator.comparingInt(Students::getNumberOfGroup).reversed());
-                    break;
-                case 5:
-                    Arrays.sort(students, Comparator.comparingInt(Students::getLvlOfKnowledge).reversed());
-                    break;
-            }
-        }
-        System.out.println(String.format("%-9s | %-3s | %-9s | %-11s | %s", "Ім'я", "Вік", "Факультет", "Номер групи", "Рівень знань(від 0 до 10)"));
-        for (Students student : students) {
-            System.out.println(String.format("%-9s | %-3s | %-9s | %-11s | %s", student.getName(), student.getAge(), student.getNameOfFaculty(), student.getNumberOfGroup(), student.getLvlOfKnowledge()));
-        }
-    }
-}

Lab5.java

@@ -1,107 +0,0 @@
-public class Lab5 {
-    public static void main(String[] args) {
-        StringBuilder txt = new StringBuilder("соціальна мережа, яка є мережею мікроблогів. Дає змогу користувачам надсилати короткі текстові повідомлення (до 2802 символів, до 2017 року — до 140 символів), використовуючи SMS,");
-        System.out.println("Початковий текст:");
-        System.out.println(txt);
-        Text text = new Text(txt);
-        StringBuilder result = text.splitText();
-        System.out.println("Змінений текст:");
-        System.out.println(result);
-    }
-}
-
-class Text {
-    private final StringBuilder textString;
-    public Text(StringBuilder textString){
-        this.textString = textString;
-    }
-
-    public StringBuilder splitText() {
-        StringBuilder result = new StringBuilder();
-        String[] sentenceStrings = textString.toString().split("(?<=[?.!])\\s?");
-        for (String s : sentenceStrings) {
-            StringBuilder sb = new StringBuilder(s);
-            Sentence sentence = new Sentence(sb);
-            result.append(sentence.splitSentence());
-        }
-        return result;
-    }
-
-}
-
-class Sentence {
-    private final StringBuilder sentence;
-
-    public Sentence(StringBuilder sentence) {
-        this.sentence = sentence;
-
-    }
-
-    public StringBuilder splitSentence() {
-        StringBuilder returnSentence = new StringBuilder();
-        String text = sentence.toString();
-        String[] words = text.split(" ");
-        for (String w : words) {
-            StringBuilder wb = new StringBuilder(w);
-            Word word = new Word(wb);
-            returnSentence.append(word.splitWord()).append(" ");
-        }
-        return returnSentence;
-
-    }
-}
-
-class Word {
-    private final StringBuilder word;
-
-    public Word(StringBuilder word) {
-        this.word = word;
-    }
-
-    public StringBuilder splitWord() {
-        StringBuilder returnWord = new StringBuilder();
-        String wordstring = word.toString();
-        String[] letters = wordstring.split("");
-        String firstLetter = wordstring.substring(0, 1);
-        returnWord.append(firstLetter);
-        for (String l: letters){
-            StringBuilder lb = new StringBuilder(l);
-            Letter letter = new Letter(lb);
-            if (firstLetter.equals(letter.getLetter().toString())){
-                returnWord.append("");
-            }else{
-                if(l.equals("!") || l.equals("?") || l.equals(".") || l.equals(",") || l.equals(":") || l.equals(";")){
-                    Punctuation punctuation = new Punctuation(lb);
-                    returnWord.append(punctuation.getPunctuation());
-                }else{
-                    returnWord.append(letter.getLetter());
-                }
-            }
-        }
-        return returnWord;
-    }
-}
-
-class Letter {
-    private final StringBuilder letter;
-
-    public Letter(StringBuilder letter) {
-        this.letter = letter;
-    }
-
-    public StringBuilder getLetter() {
-        return letter;
-    }
-}
-
-class Punctuation {
-    private final StringBuilder punctuation;
-
-    public Punctuation(StringBuilder punctuation) {
-        this.punctuation = punctuation;
-    }
-
-    public StringBuilder getPunctuation() {
-        return punctuation;
-    }
-}

Students.java

@@ -1,30 +0,0 @@
-public class Students {
-    private String name;
-    private int age;
-    private String nameOfFaculty;
-    private int numberOfGroup;
-    private int lvlOfKnowledge;
-
-    public Students(String name, int age, String nameOfFaculty, int numberOfGroup, int lvlOfKnowledge) {
-        this.name = name;
-        this.age = age;
-        this.nameOfFaculty = nameOfFaculty;
-        this.numberOfGroup = numberOfGroup;
-        this.lvlOfKnowledge = lvlOfKnowledge;
-    }
-    public String getName() {
-        return name;
-    }
-    public int getAge() {
-        return age;
-    }
-    public String getNameOfFaculty() {
-        return nameOfFaculty;
-    }
-    public int getNumberOfGroup() {
-        return numberOfGroup;
-    }
-    public int getLvlOfKnowledge() {
-        return lvlOfKnowledge;
-    }
-}

lab1.java

@@ -1,29 +0,0 @@
-import java.util.Scanner;
-
-public class lab1 {
-    public static void main(String[] args) {
-        float S = 0, i, j;
-        int C = 1;
-        Scanner scan = new Scanner(System.in);
-        System.out.println("Введіть значення a (a>1):");
-        int a = scan.nextInt();
-        System.out.println("Введіть значення b:");
-        int b = scan.nextInt();
-        System.out.println("Введіть значення n:");
-        int n = scan.nextInt();
-        System.out.println("Введіть значення m:");
-        int m = scan.nextInt();
-        for (i = a; i <= n; i++) {
-            if (i - C == 0) {
-                System.out.println("Ділення на 0");
-                return;
-            }
-            for (j = b; j <= m; j++) {
-                S += (i - j) / (i - C);
-
-            }
-        }
-        System.out.println(S);
-
-    }
-}

lab2.java

@@ -1,78 +0,0 @@
-import java.util.Scanner;
-import java.util.Random;
-
-public class lab2 {
-    public static void main(String[] args) {
-        Scanner scan = new Scanner(System.in);
-
-        System.out.println("Введіть кількість рядків матриці А:");
-        int mA = scan.nextInt();
-        System.out.println("Введіть кількість стовпців матриці А:");
-        int nA = scan.nextInt();
-        System.out.println("Введіть кількість рядків матриці B:");
-        int mB = scan.nextInt();
-        if (nA != mB) {
-            System.out.println("Щоб помножити матриці, потрібно, щоб кількість стовпців матриці А == кількості рядків матриці B");
-            return;
-        }
-        System.out.println("Введіть кількість стовпців матриці B:");
-        int nB = scan.nextInt();
-        System.out.println("Границя значень у матрицях:");
-        int upperbound = scan.nextShort();
-        int[][] matrixA = new int[mA][nA];
-        int[][] matrixB = new int[mB][nB];
-        int[][] matrixC = new int[mA][nB];
-        generationMatrixes(matrixA, matrixB, upperbound);
-        printMatrixC(matrixA, matrixB, matrixC);
-        AverageValueofElementsofEachColumn(matrixC);
-    }
-
-    private static void AverageValueofElementsofEachColumn(int[][] matrixC) {
-        System.out.println("Середнє значення елементів кожного стовпчика матриці:");
-        System.out.print("||");
-        for (int i = 0; i < matrixC.length; i++) {
-            double sum = 0;
-            for (int j = 0; j < matrixC[i].length; j++) {
-                sum += matrixC[j][i];
-            }
-            System.out.printf(" %.2f ||", (sum) / matrixC.length);
-        }
-    }
-
-    private static void printMatrixC(int[][] matrixA, int[][] matrixB, int[][] matrixC) {
-        for (int i = 0; i < matrixC.length; i++) {
-            for (int j = 0; j < matrixC[i].length; j++) {
-                for (int k = 0; k < matrixA[j].length; k++) {
-                    matrixC[i][j] += matrixA[i][k] * matrixB[k][j];
-                }
-            }
-        }
-        System.out.println("Матриця С:");
-        for (int i = 0; i < matrixC.length; i++) {
-            for (int j = 0; j < matrixC[i].length; j++) {
-                System.out.printf("|%4d", matrixC[i][j]);
-            }
-            System.out.println("|");
-        }
-    }
-
-    private static void generationMatrixes(int[][] matrixA, int[][] matrixB, int upperbound) {
-        Random rand = new Random();
-        System.out.println("Матриця А:");
-        for (short i = 0; i < matrixA.length; i++) {
-            for (int j = 0; j < matrixA[i].length; j++) {
-                matrixA[i][j] = rand.nextInt(upperbound);
-                System.out.printf("|%4d", matrixA[i][j]);
-            }
-            System.out.println("|");
-        }
-        System.out.println("Матриця B:");
-        for (short i = 0; i < matrixB.length; i++) {
-            for (int j = 0; j < matrixB[i].length; j++) {
-                matrixB[i][j] = rand.nextInt(upperbound);
-                System.out.printf("|%4d", matrixB[i][j]);
-            }
-            System.out.println("|");
-        }
-    }
-}

lab3.java

@@ -1,21 +0,0 @@
-public class lab3 {
-    public static void main(String[] args) {
-        StringBuilder txt = new StringBuilder("— соціальна мережа, яка є мережею мікроблогів, дає змогу користувачам надсилати короткі текстові повідомлення (до 2802 символів, до 2017 року — до 140 символів), використовуючи SMS,");
-        System.out.println(txt);
-        String[] words = txt.toString().split("\\s+");
-        StringBuilder result = new StringBuilder();
-        for (int i = 0; i < words.length; i++) {
-            StringBuilder word = new StringBuilder(words[i]);
-            StringBuilder firstLetter = new StringBuilder(word.substring(0, 1));
-            if (word.substring(1).contains(firstLetter.toString().toLowerCase()) || word.substring(1).contains(firstLetter)) {
-                String changedWord = firstLetter + word.substring(1).replaceAll(firstLetter.toString().toLowerCase(), "").replaceAll(firstLetter.toString(), "");
-                result.append(changedWord);
-                result.append(" ");
-            } else {
-                result.append(word);
-                result.append(" ");
-            }
-        }
-        System.out.println(result);
-    }
-}

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/Lab1/Lab1.java

@@ -0,0 +1,140 @@
+package Lab1;
+
+import java.util.InputMismatchException;
+import java.util.Scanner;
+
+public class Lab1 {
+    public static void main(String[] args) {
+        int C2, C3, C5, C7; // creating variables
+        int numBook = 2401; // default value of scorebook
+
+        Scanner sc = new Scanner(System.in); // scanner creating for inputing values from keyboard
+        System.out.println("By default number of scorebook is 2401. \nEnter to skip or input new value: ");
+        String input = sc.nextLine();
+
+        if (!input.equals("")) { // try-catch for checking correct inputing of value
+            try {
+                numBook = Math.abs(Integer.parseInt(input)); // scorebook can be only unsigned
+            } catch (NumberFormatException e) {
+                System.out.println("Invalid input. Using default value 2401"); // printing that will be used default value
+            }
+        }
+
+        String[] operations1 = {"+", "-"};//
+        String[] operations2 = {"*", "/", "%", "+", "-"}; //  String array for choosing operations
+        String[] operations3 = {"byte", "short", "int", "long", "char", "float", "double"}; //
+        // determining variables
+        C2 = numBook % 2;
+        C3 = numBook % 3;
+        C5 = numBook % 5;
+        C7 = numBook % 7;
+
+        String O1 = operations1[C2];
+        int C = C3;
+        String O2 = operations2[C5];
+        String O3 = operations3[C7];
+
+        System.out.println("C2 is: " + C2 + ", operation is: " + O1); //
+        System.out.println("C3 is: " + C);                            // printing parameters that user got
+        System.out.println("C5 is: " + C5 + ", operation is: " + O2); //
+        System.out.println("C7 is: " + C7 + ", Type of indexes i and j is: " + O3); //
+
+        Number i = 0; // creating objects i j of (abstract)superclass Number
+        Number j = 0; //
+
+
+        System.out.println("\nEnter a value for i and j in the " + O3 + " type: ");
+
+        switch (O3) { // Choosing type of i and j by C7
+            case "byte" -> {
+                try {
+                    i = sc.nextByte();
+                    j = sc.nextByte();
+                } catch (InputMismatchException e) {
+                    System.out.println("Invalid input. Please enter a valid byte value.");
+                    sc.nextLine();
+                }
+            }
+            case "short" -> {
+                i = sc.nextShort();
+                j = sc.nextShort();
+            }
+            case "int" -> {
+                i = sc.nextInt();
+                j = sc.nextInt();
+            }
+            case "long" -> {
+                i = sc.nextLong();
+                j = sc.nextLong();
+            }
+            case "char" -> {
+                System.out.println("Read only first character!");
+                i = (int) sc.next().charAt(0);
+                j = (int) sc.next().charAt(0);
+            }
+            case "float" -> {
+                i = sc.nextFloat();
+                j = sc.nextFloat();
+            }
+            case "double" -> {
+                i = sc.nextDouble();
+                j = sc.nextDouble();
+            }
+
+        }
+
+
+        System.out.println("The value of the created variables is: " + i + " and " + j);
+
+
+
+        class Sum { // creating class Sum
+            int n, m;
+            double i, j;
+
+            public Sum(double i, double j, int n, int m) { // Constructor to initialize all variables
+                this.i = i;
+                this.j = j;
+                this.n = n;
+                this.m = m;
+            }
+
+            public void calc() { // create method for our class
+                double sum = 0, result = 0, result2 = 0;
+                if ((O1.equals("-") && i + n >= C && i <= C) || (C == 0 && i == 0)) { // exclude situations
+                    System.out.println("dividing by zero!");                          // with dividing by 0
+                } else if (i > n || j > m) {
+                    System.out.println("i or j greater than n or m");
+                } else {
+                    for (double b = i; b <= n; b++) {
+                        for (double a = j; a <= m; a++) {
+                            switch (O2) {
+                                case "+" -> result = b + a;
+                                case "-" -> result = b - a;
+                                case "*" -> result = b * a;
+                                case "/" -> result = b / a;
+                                case "%" -> result = b % a;
+                            }
+                            switch (O1) {
+                                case "+" -> result2 = b + C;
+                                case "-" -> result2 = b - C;
+                            }
+                            sum += result / result2;
+                        }
+                    }
+                    System.out.println("Sum is: " + sum);
+                }
+            }
+        }
+
+        System.out.print("Enter value for n and m: \n");
+
+        int n = sc.nextInt();
+        int m = sc.nextInt();
+
+        Sum sum = new Sum(i.doubleValue(), j.doubleValue(), n, m); // creating new instance of Sum class
+        // .doubleValue() converting our variables to double
+        sum.calc();
+        sc.close();
+    }
+}

src/Lab2.java

@@ -1,102 +0,0 @@
-public class Lab2 {
-    public static void main(String[] args) {
-        final int A = 2;
-        final int[][] MATRIX_B = {
-                {1, 202, 1, 1, 202, 3, 1, 202, 3,},
-                {1, 202, 1, 1, 202, 3, 1, 202, 3,},
-                {1, 1,   3, 1, 202, 3, 1, 202, 3,},
-//                {4, 5, 6,},
-        };
-
-        int[][] MATRIX_C = multiplication(A, MATRIX_B);
-
-        print(MATRIX_C);
-
-        System.out.println("Sum of smallest elements in every column: " + sumOfSmallestElementsInEveryColumn(MATRIX_C));
-
-        /*int[] array = {1, 2, 3};
-        int[] array2 = new int[3];
-        Object[] array3 = new String[3];
-        System.out.println(array3[0]); //nothing, trash from the memory, null || null
-        System.out.println(array2[0]); //nothing, trash from the memory, null || 0
-        System.out.println(array[0]); // || 1
-
-        int[][] matrix2 = new int[2][3];
-        matrix2[0] = new int[2];
-        matrix2[1] = new int[1];
-        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}
-        };
-
-//        C=a×B, a - const
-
-
-//        final int[][] MATRIX_C = int;
-
-
-        MATRIX_B[0][0] = 2;
-        MATRIX_B[0] = new int[]{1, 2};
-        System.out.println(MATRIX_B[0][0]);
-        MATRIX_B = new int[][]{
-                {1, 2},
-                {3}
-        };*/
-    }
-
-    private static int sumOfSmallestElementsInEveryColumn(final int[][] MATRIX_C) {
-//        todo check different length of rows
-//        todo try to change i and j
-//        todo check repetition of minimal elements
-        int sum = 0;
-        for (int i = 0; i < MATRIX_C[0].length; i++) {
-            int tmpSmallest = MATRIX_C[0][i];
-            for (int j = 1; j < MATRIX_C.length; j++) {
-                if (MATRIX_C[j][i] < tmpSmallest) {
-                    tmpSmallest = MATRIX_C[j][i];
-                }
-            }
-            sum += tmpSmallest;
-        }
-        return sum;
-    }
-
-    private static void print(final int[][] MATRIX_C) {
-        for (int i = 0; i < MATRIX_C.length; i++) {
-            for (int j = 0; j < MATRIX_C[i].length; j++) {
-//                System.out.print(MATRIX_C[i][j] + "\t");//printf("%4d",
-                System.out.printf("%4d ", MATRIX_C[i][j]);//printf("%4d",
-            }
-            System.out.println();
-        }
-    }
-
-    private static int[][] multiplication(int A, final int[][] MATRIX_B) {
-        final int[][] MATRIX_C = new int[MATRIX_B.length][/*MATRIX_B[0].length*/]; // todo !!!DANGER different lengths of rows
-//        final int[][] MATRIX_C = MATRIX_B;
-        for (int i = 0; i < MATRIX_B.length; i++) {
-            MATRIX_C[i] = new int[MATRIX_B[i].length];
-            for (int j = 0; j < MATRIX_B[i].length; j++) {
-                MATRIX_C[i][j] = MATRIX_B[i][j] * A;
-            }
-        }
-        return MATRIX_C;
-    }
-}

src/Lab2/Lab2.java

@@ -0,0 +1,153 @@
+package Lab2;
+
+import java.util.Scanner;
+import java.util.Random;
+
+public class Lab2 {
+    public static void main(String[] args) {
+        final int C5, C7, C11, NumBook;
+        NumBook = 2401;
+        C5 = NumBook % 5;
+        C7 = NumBook % 7;
+        C11 = NumBook % 11;
+        System.out.println("-----------------------------------------------------");
+        System.out.println("C5 is: " + C5 + " - act with martix is C=Bт");
+        System.out.println("C7 is: " + C7 + " - type of elements is double");
+        System.out.println("C11 is: " + C11 + " - calculate the sum of the largest elements\n" +
+                "of each row of the matrix");
+        System.out.println("-----------------------------------------------------");
+        int Mside = 0;
+        int Nside = 0;
+        int Choose;
+        double MaxSum = 0;
+        Random rand = new Random();
+        Scanner sc = new Scanner(System.in);
+
+        while (true) {
+            try {
+                System.out.print("Enter random or handle input(1 or 0): ");
+                Choose = Math.abs(Integer.parseInt(sc.nextLine()));
+                if (Choose == 1 || Choose == 0) {
+                    break;
+                }
+            } catch (NumberFormatException e) {
+                System.out.println("Invalid input. Please enter an integer.");
+            }
+
+        }
+        while (true) {
+            try {
+                System.out.print("Enter number of rows: ");
+                Mside = Math.abs(Integer.parseInt(sc.nextLine()));
+                if (Mside <= 0) {
+                    System.out.println("Invalid input. Number of rows must be greater than 0");
+
+                } else {
+                    break;
+                }
+            } catch (NumberFormatException e) {
+                System.out.println("Invalid input. Please enter an integer.");
+            }
+        }
+
+        while (true) {
+            try {
+                System.out.print("Enter number of columns: ");
+                Nside = Math.abs(Integer.parseInt(sc.nextLine()));
+                if (Nside <= 0) {
+                    System.out.println("Invalid input. Number of columns must be greater than 0");
+
+                } else {
+                    break;
+                }
+            } catch (NumberFormatException e) {
+                System.out.println("Invalid input. Please enter an integer.");
+            }
+        }
+        final int lenghtMaxElements = 5;
+        double[][] CArray = new double[Mside][Nside];
+        double[][] TransposedArray = new double[Nside][Mside];
+        double[][] MaxElements = new double[Nside][lenghtMaxElements];
+        if (Choose == 1) {
+            for (int i = 0; i < Mside; i++) {
+                for (int j = 0; j < Nside; j++) {
+                    CArray[i][j] = rand.nextDouble(-100, 100);
+                }
+
+            }
+        }
+        if (Choose == 0) {
+            for (int i = 0; i < Mside; i++) {
+                for (int j = 0; j < Nside; j++) {
+                    while (true) {
+                        try {
+                            System.out.printf("Enter the element at position (%d,%d): ", i + 1, j + 1);
+                            CArray[i][j] = Double.parseDouble(sc.nextLine());
+                            break;
+                        } catch (NumberFormatException e) {
+                            System.out.println("Invalid input. Please enter a valid number.");
+                        }
+                    }
+                }
+            }
+        }
+        for (int i = 0; i < Mside; i++) {
+            for (int j = 0; j < Nside; j++) {
+                System.out.printf("%8.2f", CArray[i][j]);
+            }
+            System.out.println();
+        }
+
+        for (int i = 0; i < Nside; i++) {
+            for (int j = 0; j < Mside; j++) {
+                TransposedArray[i][j] = CArray[j][i];
+            }
+        }
+        System.out.println("Transposed array is:");
+        int row, cols;
+        for (row = 0; row < Nside; row++) {
+            for (cols = 0; cols < Mside; cols++) {
+                System.out.printf("%8.2f", TransposedArray[row][cols]);
+
+            }
+            System.out.println();
+        }
+
+        for (int i = 0; i < Nside; i++) {
+            MaxElements[i][0] = TransposedArray[i][0];
+
+            for (int j = 1; j < Mside; j++) {
+                MaxElements[i][1] = i;
+                if (TransposedArray[i][j] > MaxElements[i][0]) {
+                    MaxElements[i][0] = TransposedArray[i][j];
+                    MaxElements[i][2] = j;
+
+
+                } else if (TransposedArray[i][j] == MaxElements[i][0]) {
+                    MaxElements[i][3] = MaxElements[i][0];
+                    MaxElements[i][4] = 1;
+
+                }
+
+
+            }
+            //System.out.println(MaxElements[i][0] +" "+ MaxElements[i][1] +" "+ MaxElements[i][2] + " " + MaxElements[i][3] + " " + MaxElements[i][4]);
+            //code i used for debug
+        }
+        System.out.println("Max elements for each row:");
+        if (Mside == 1) {
+            System.out.println("I can`t find max element for mx1 matrix");
+
+        } else {
+            for (int i = 0; i < Nside; i++) {
+                if (MaxElements[i][0] == MaxElements[i][3] && MaxElements[i][4] == 1) {
+                    System.out.printf("In row %1.0f does not exist a max element\n", MaxElements[i][1] + 1);
+                } else {
+                    System.out.printf("%8.2f is max value and his coordinate: (%1.0f, %1.0f)\n", MaxElements[i][0], MaxElements[i][1] + 1, MaxElements[i][2] + 1);
+                    MaxSum += MaxElements[i][0];
+                }
+            }
+            System.out.printf("Sum of elements with max values is: %.2f\n", MaxSum);
+        }
+    }
+}

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);
-    }
-}