Лабораторные 21-32

students/23K0755/23K0755-p03/src/main/java/ru/mirea/practice/s23k0755/task1/First.java → students/23K0755/23K0755-p03/src/main/java/ru/mirea/practice/s23k0755/First.java

@@ -1,4 +1,4 @@
-package ru.mirea.practice.s23k0755.task1;
+package ru.mirea.practice.s23k0755;
 
 import java.util.Arrays;
 import java.util.Random;
@@ -49,4 +49,4 @@ public static void main(String[] args) {
             throw new RuntimeException(e);
         }
     }
-}
+}

students/23K0755/23K0755-p07/src/main/java/ru/mirea/practice/s23k0755/task1/Magazine.java → students/23K0755/23K0755-p07/src/main/java/ru/mirea/practice/s23k0755/Magazine.java

@@ -1,4 +1,4 @@
-package ru.mirea.practice.s23k0755.task1;
+package ru.mirea.practice.s23k0755;
 
 class Magazine implements Printable {
     private String title;
@@ -18,4 +18,4 @@ public static void printMagazines(Printable[] printables) {
             }
         }
     }
-}
+}

students/23K0755/23K0755-p07/src/main/java/ru/mirea/practice/s23k0755/task1/Printable.java → students/23K0755/23K0755-p07/src/main/java/ru/mirea/practice/s23k0755/Printable.java

@@ -1,4 +1,4 @@
-package ru.mirea.practice.s23k0755.task1;
+package ru.mirea.practice.s23k0755;
 
 interface Printable {
     String getTitle();

students/23K0755/23K0755-p07/src/main/java/ru/mirea/practice/s23k0755/task1/TestMagazine.java → students/23K0755/23K0755-p07/src/main/java/ru/mirea/practice/s23k0755/TestMagazine.java

@@ -1,4 +1,4 @@
-package ru.mirea.practice.s23k0755.task1;
+package ru.mirea.practice.s23k0755;
 
 public abstract class TestMagazine {
     public static void main(String[] args) {

students/23K0755/23K0755-p18/src/main/java/ru/mirea/practice/s23k0755/task1/Exception.java → students/23K0755/23K0755-p18/src/main/java/ru/mirea/practice/s23k0755/Exception.java

@@ -1,4 +1,4 @@
-package ru.mirea.practice.s23k0755.task1;
+package ru.mirea.practice.s23k0755;
 
 public class Exception {
     public void exceptionDemo() {

students/23K0755/23K0755-p18/src/main/java/ru/mirea/practice/s23k0755/task1/Exception1.java → students/23K0755/23K0755-p18/src/main/java/ru/mirea/practice/s23k0755/Exception1.java

@@ -1,4 +1,4 @@
-package ru.mirea.practice.s23k0755.task1;
+package ru.mirea.practice.s23k0755;
 
 public class Exception1 {
     public void exceptionDemo() {

students/23K0755/23K0755-p21/pom.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <artifactId>23K0755</artifactId>
+        <groupId>ru.mirea.practice</groupId>
+        <version>2024.1</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+    <artifactId>23K0755-p21</artifactId>
+    <description>Массивы</description>
+</project>

students/23K0755/23K0755-p21/src/main/java/ru/mirea/practice/s23k0755/task1/Converter.java

@@ -0,0 +1,23 @@
+package ru.mirea.practice.s23k0755.task1;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public abstract class Converter {
+
+    public static <T> List<T> arrayToList(T[] array) {
+        return new ArrayList<>(Arrays.asList(array));
+    }
+
+    public static void main(String[] args) {
+        String[] stringArray = {"Петя", "Вася", "Федя"};
+        List<String> stringList = arrayToList(stringArray);
+        System.out.println("String list: " + stringList);
+
+        Integer[] intArray = {1, 2, 3, 4, 5};
+        List<Integer> intList = arrayToList(intArray);
+        System.out.println("Integer list: " + intList);
+    }
+}
+

students/23K0755/23K0755-p21/src/main/java/ru/mirea/practice/s23k0755/task2/GenericArray.java

@@ -0,0 +1,53 @@
+package ru.mirea.practice.s23k0755.task2;
+
+public class GenericArray<T> {
+    private T[] elements;
+
+    public GenericArray(T[] elements) {
+        this.elements = elements;
+    }
+
+    public T get(int index) {
+        if (index >= 0 && index < elements.length) {
+            return elements[index];
+        } else {
+            throw new IndexOutOfBoundsException("Index: " + index + ", Size: " + elements.length);
+        }
+    }
+
+    public void set(int index, T element) {
+        if (index >= 0 && index < elements.length) {
+            elements[index] = element;
+        } else {
+            throw new IndexOutOfBoundsException("Index: " + index + ", Size: " + elements.length);
+        }
+    }
+
+    public int size() {
+        return elements.length;
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder("[");
+        for (int i = 0; i < elements.length; i++) {
+            sb.append(elements[i]);
+            if (i < elements.length - 1) {
+                sb.append(", ");
+            }
+        }
+        sb.append("]");
+        return sb.toString();
+    }
+
+    public static void main(String[] args) {
+        Integer[] intArray = {1, 2, 3, 4, 5};
+        GenericArray<Integer> intStorage = new GenericArray<>(intArray);
+        System.out.println("Integer array: " + intStorage);
+
+        String[] stringArray = {"Петя", "Вася", "Федя"};
+        GenericArray<String> stringStorage = new GenericArray<>(stringArray);
+        System.out.println("String array: " + stringStorage);
+    }
+}
+

students/23K0755/23K0755-p22/pom.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <artifactId>23K0755</artifactId>
+        <groupId>ru.mirea.practice</groupId>
+        <version>2024.1</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+    <artifactId>23K0755-p22</artifactId>
+    <description>Массивы</description>
+</project>

students/23K0755/23K0755-p22/src/main/java/ru/mirea/practice/s23k0755/RpnCalculator.java

@@ -0,0 +1,46 @@
+package ru.mirea.practice.s23k0755;
+
+public class RpnCalculator {
+    private Stack stack;
+
+    public RpnCalculator(int size) {
+        stack = new Stack(size);
+    }
+
+    public double evaluate(String expression) {
+        String[] strings = expression.split(" ");
+        for (String element : strings) {
+            try {
+                float f = Float.parseFloat(element);
+                stack.push(f);
+            } catch (NumberFormatException e) {
+                performOperation(element);
+            }
+        }
+        return stack.pop();
+    }
+
+    private void performOperation(String operator) {
+        float secondOperand = stack.pop();
+        float firstOperand = stack.pop();
+        switch (operator) {
+            case "+":
+                stack.push(firstOperand + secondOperand);
+                break;
+            case "-":
+                stack.push(firstOperand - secondOperand);
+                break;
+            case "*":
+                stack.push(firstOperand * secondOperand);
+                break;
+            case "/":
+                if (secondOperand == 0) {
+                    throw new ArithmeticException("Ошибка: Деление на ноль");
+                }
+                stack.push(firstOperand / secondOperand);
+                break;
+            default:
+                throw new IllegalArgumentException("Недопустимый оператор: " + operator);
+        }
+    }
+}

students/23K0755/23K0755-p22/src/main/java/ru/mirea/practice/s23k0755/Stack.java

@@ -0,0 +1,66 @@
+package ru.mirea.practice.s23k0755;
+
+class Stack {
+    // store elements of stack
+    private float[] arr;
+    // represent top of stack
+    private int top;
+    // total capacity of the stack
+    private int capacity;
+
+    // Creating a stack
+    Stack(int size) {
+        // initialize the array
+        // initialize the stack variables
+        arr = new float[size];
+        capacity = size;
+        top = -1;
+    }
+
+    // push elements to the top of stack
+    public void push(float x) {
+        if (isFull()) {
+            System.out.println("Stack OverFlow");
+            // terminates the program
+            System.exit(1);
+        }
+        // insert element on top of stack
+        System.out.println("Inserting " + x);
+        arr[++top] = x;
+    }
+
+    // pop elements from top of stack
+    public float pop() {
+        // if stack is empty
+        // no element to pop
+        if (isEmpty()) {
+            System.out.println("STACK EMPTY");
+            // terminates the program
+            System.exit(1);
+        }
+        // pop element from top of stack
+        return arr[top--];
+    }
+
+    // return size of the stack
+    public int getSize() {
+        return top + 1;
+    }
+
+    // check if the stack is empty
+    public Boolean isEmpty() {
+        return top == -1;
+    }
+
+    // check if the stack is full
+    public Boolean isFull() {
+        return top == capacity - 1;
+    }
+
+    // display elements of stack
+    public void printStack() {
+        for (int i = 0; i <= top; i++) {
+            System.out.print(arr[i] + ", ");
+        }
+    }
+}

students/23K0755/23K0755-p22/src/main/java/ru/mirea/practice/s23k0755/Test.java

@@ -0,0 +1,18 @@
+package ru.mirea.practice.s23k0755;
+
+public abstract class Test {
+    public static void main(String[] args) {
+        RpnCalculator calculator = new RpnCalculator(10);
+        System.out.println("16.1 3.9 + = " + calculator.evaluate("16.1 3.9 +"));
+        System.out.println("8 4 - = " + calculator.evaluate("8 4 -"));
+        System.out.println("28 0.5 * = " + calculator.evaluate("28 0.5 *"));
+        System.out.println("7 2 / = " + calculator.evaluate("7 2 /"));
+        System.out.println("3 4 + 2 * = " + calculator.evaluate("3 4 + 2 *"));
+
+        try {
+            System.out.println("38 0 / = " + calculator.evaluate("38 0 /"));
+        } catch (ArithmeticException e) {
+            System.out.println(e.getMessage());
+        }
+    }
+}

students/23K0755/23K0755-p23/pom.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <artifactId>23K0755</artifactId>
+        <groupId>ru.mirea.practice</groupId>
+        <version>2024.1</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+    <artifactId>23K0755-p23</artifactId>
+    <description>Массивы</description>
+</project>

students/23K0755/23K0755-p23/src/main/java/ru/mirea/practice/s23k0755/task1/ArrayQueue.java

@@ -0,0 +1,55 @@
+package ru.mirea.practice.s23k0755.task1;
+
+public class ArrayQueue {
+    private double[] elements;
+    private int head;
+    private int tail;
+    private int size;
+
+    public ArrayQueue(int capacity) {
+        this.elements = new double[capacity];
+        this.head = 0;
+        this.tail = 0;
+        this.size = 0;
+    }
+
+    public void enqueue(double value) {
+        if (size == elements.length) {
+            throw new IllegalStateException("Очередь переполнена");
+        }
+        elements[tail] = value;
+        tail = (tail + 1) % elements.length;
+        size++;
+    }
+
+    public double dequeue() {
+        if (isEmpty()) {
+            throw new IllegalStateException("Очередь пуста");
+        }
+        double value = elements[head];
+        head = (head + 1) % elements.length;
+        size--;
+        return value;
+    }
+
+    public double element() {
+        if (isEmpty()) {
+            throw new IllegalStateException("Очередь пуста");
+        }
+        return elements[head];
+    }
+
+    public int size() {
+        return size;
+    }
+
+    public boolean isEmpty() {
+        return size == 0;
+    }
+
+    public void clear() {
+        head = 0;
+        tail = 0;
+        size = 0;
+    }
+}