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>

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

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

src/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);
-    }
-}