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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 +1,38 @@
+import java.text.DecimalFormat;
+import java.util.Scanner;
+
+public class Main {
+    /* Номер залікової книжки - 2425,
+    C2 = 1, C3 = 1 = C,C5 = 0, C7 = 3, index's type = long */
+    private static final DecimalFormat DECIMAL_FORMAT = new DecimalFormat("#.##");
+
+    public static void main(String[] args) {
+        //System.out.println("Перед тим як вводити значення враховуйте умову: 0 < a <= n\n 0 <= b <= m");
+        System.out.print("\nВеддіть ваше значення a: ");
+        Scanner a1 = new Scanner(System.in);
+        int a = a1.nextInt();
+        System.out.print("\nВеддіть ваше значення b: ");
+        Scanner b1 = new Scanner(System.in);
+        int b = b1.nextInt();
+        System.out.print("\nВеддіть ваше значення m: ");
+        Scanner m1 = new Scanner(System.in);
+        int m = m1.nextInt();
+        System.out.print("\nВеддіть ваше значення n: ");
+        Scanner n1 = new Scanner(System.in);
+        int n = n1.nextInt();
+        double S = 0;
+        final int C = 1; //Const
+        if (b >= 0 && a <= n && b <= m && a > 1) {
+            for (long i = a; i <= n; i++) {
+                for (long j = b; j <= m; j++) {
+                    S += (double) (i * j) / (i - C);
+                }
+            }
+            System.out.println("Значення S = " + DECIMAL_FORMAT.format(S));
+        } else {
+            System.out.println("Значення А має бути > 0\nЗначення А має бути <= n");
+            System.out.println("Значення B має бути >= 0\nЗначення B має бути <= m");
+        }
+
+    }
+}

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>

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) ��������� � i = 1, 2) ���� � <= 3, 3) �������� 䳿 � �� �����,
-            System.out.println(i);     // 4) �������������� � �� 1, 5) ����������� �� ����� 2
-//            s = s + i;
-            s += i;
-        }*/
-        /*int[] array = new int[2];
-        for (int i = 0; i < array.length; i++) {
-
-        }*/
-        final int A = -3;
-        final int B = 0;
-        final int N = 2;
-        final int M = 2;
-
-        final int C = 1;
-//        boolean wasDivisionByZero = false;
-//        todo char
-//        todo[clear code] think about avoiding brackets
-        if ((A <= -C && -C <= N) || (B <= 0 && 0 <= M)) {
-            System.out.println("Division by zero!");
-            return;
-        }
-/*myLabel:*/for (int i = A; i <= N /*&& !wasDivisionByZero*/; i++) {
-            /*if (i + C == 0) { // todo optimize
-                System.out.println("Division by zero!");
-                wasDivisionByZero = true;
-                break; //todo flag vs return;
-            }*/
-            for (int j = B; j <= M; j++) {
-                /*if (j == 0) {
-                    System.out.println("Division by zero!");
-                    return;
-//                    wasDivisionByZero = true;
-//                    break myLabel;
-                }*/
-                s += (double) (i / j) / (i + C);
-            }
-        }
-//        if (!wasDivisionByZero) {
-            System.out.println("s = " + s);
-//        }
-    }
-}

src/Lab2.java

@@ -1,102 +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/Main.java

@@ -3,33 +3,6 @@ public class Main {
         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() {

src/encapsulationInheritancePolymorphism/inheritance/ElectricEngine.java

@@ -2,8 +2,4 @@ package encapsulationInheritancePolymorphism.inheritance;
 
 public class ElectricEngine extends Engine {
     private String batteryType;
-
-    /*private 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

@@ -2,7 +2,6 @@ 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();
+        ElectricEngine electricEngine = new ElectricEngine();
     }
 }

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);
-    }
-}