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PastorPastor
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Merge pull request #615 from 1NEILY/main
labs 21-30's
2 parents 08f2bfe + 695f588 commit 7ef7370

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‎students/23K0114/23K0114-p021/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<artifactId>23K0114</artifactId>
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<groupId>ru.mirea.practice</groupId>
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<version>2024.1</version>
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<relativePath>../pom.xml</relativePath>
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</parent>
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<artifactId>23K0114-p021</artifactId>
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<description>Массивы</description>
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</project>

‎students/23K0114/23K0114-p021/src/main/java/ru/mirea/practice/s23k0114/lab1/task1/ArrayToListConverter.java

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package ru.mirea.practice.s23k0114.lab1.task1;
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import java.util.ArrayList;
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import java.util.List;
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public abstract class ArrayToListConverter {
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// Метод для конвертации массива строк в список
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public static List<String> convertStringArrayToList(String[] array) {
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List<String> list = new ArrayList<>();
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for (String element : array) {
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list.add(element);
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}
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return list;
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}
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// Метод для конвертации массива чисел в список
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public static List<Integer> convertIntegerArrayToList(Integer[] array) {
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List<Integer> list = new ArrayList<>();
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for (Integer element : array) {
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list.add(element);
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}
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return list;
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}
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public static void main(String[] args) {
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// Пример использования метода для строк
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String[] stringArray = {"apple", "banana", "cherry"};
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List<String> stringList = convertStringArrayToList(stringArray);
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System.out.println("Список строк: " + stringList);
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// Пример использования метода для чисел
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Integer[] integerArray = {1, 2, 3, 4, 5};
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List<Integer> integerList = convertIntegerArrayToList(integerArray);
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System.out.println("Список чисел: " + integerList);
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}
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}

‎students/23K0114/23K0114-p021/src/main/java/ru/mirea/practice/s23k0114/lab1/task2/GenericArray.java

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package ru.mirea.practice.s23k0114.lab1.task2;
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import java.util.ArrayList;
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import java.util.List;
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public class GenericArray<T> {
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private List<T> list;
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public GenericArray() {
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list = new ArrayList<>(); // Мы можем менять реализацию на другую в будущем
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}
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public void add(T element) {
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list.add(element);
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}
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public T get(int index) {
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if (index < 0 || index >= list.size()) {
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throw new IndexOutOfBoundsException("Индекс вне диапазона");
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}
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return list.get(index);
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}
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public int size() {
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return list.size();
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}
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public void remove(int index) {
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if (index < 0 || index >= list.size()) {
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throw new IndexOutOfBoundsException("Индекс вне диапазона");
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}
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list.remove(index);
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}
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@Override
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public String toString() {
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return list.toString();
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}
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public static void main(String[] args) {
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GenericArray<Object> genericArray = new GenericArray<>();
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// Пример использования
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genericArray.add(10); // int
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genericArray.add(20L); // long
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genericArray.add("Hello"); // String
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genericArray.add(3.14); // double
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System.out.println("Массив: " + genericArray);
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System.out.println("Элемент по индексу 2: " + genericArray.get(2));
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System.out.println("Размер массива: " + genericArray.size());
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genericArray.remove(1); // Удаляем элемент по индексу 1
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System.out.println("После удаления элемента: " + genericArray);
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}
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}

‎students/23K0114/23K0114-p022/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<artifactId>23K0114</artifactId>
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<groupId>ru.mirea.practice</groupId>
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<version>2024.1</version>
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<relativePath>../pom.xml</relativePath>
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</parent>
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<artifactId>23K0114-p022</artifactId>
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<description>Массивы</description>
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</project>

‎students/23K0114/23K0114-p022/src/main/java/ru/mirea/practice/s23k0114/lab1/task1/RpnCalculator.java

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package ru.mirea.practice.s23k0114.lab1.task1;
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import java.util.Scanner;
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import java.util.Stack;
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public abstract class RpnCalculator {
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public static double evaluate(String expression) {
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Stack<Double> stack = new Stack<>();
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// Разделяем входную строку на элементы
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String[] tokens = expression.split(" ");
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for (String token : tokens) {
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switch (token) {
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case "+":
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stack.push(stack.pop() + stack.pop());
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break;
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case "-":
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double subtrahend = stack.pop();
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double minuend = stack.pop();
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stack.push(minuend - subtrahend);
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break;
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case "*":
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stack.push(stack.pop() * stack.pop());
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break;
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case "/":
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double divisor = stack.pop();
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double dividend = stack.pop();
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stack.push(dividend / divisor);
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break;
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default:
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// Если токен не оператор, то предполагаем, что это число
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stack.push(Double.parseDouble(token));
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break;
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}
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}
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// Результат будет единственным элементом в стеке
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return stack.pop();
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}
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public static void main(String[] args) {
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// Используем try-with-resources для безопасного закрытия Scanner
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try (Scanner scanner = new Scanner(System.in)) {
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System.out.print("Введите выражение в обратной польской нотации (RPN): ");
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String expression = scanner.nextLine();
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if (expression != null && !expression.trim().isEmpty()) {
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try {
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double result = evaluate(expression);
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System.out.println("Результат: " + result);
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} catch (Exception e) {
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System.out.println("Ошибка: " + e.getMessage());
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}
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} else {
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System.out.println("Вы не ввели выражение.");
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}
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}
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}
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}

‎students/23K0114/23K0114-p022/src/main/java/ru/mirea/practice/s23k0114/lab1/task2/CalculatorController.java

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package ru.mirea.practice.s23k0114.lab1.task2;
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import javax.swing.JButton;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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public class CalculatorController {
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private final CalculatorModel model; // Instance variable
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private final CalculatorView view; // Instance variable
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public CalculatorController(CalculatorModel model, CalculatorView view) {
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this.model = model;
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this.view = view;
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this.view.addCalculateListener(new CalculateListener());
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this.view.addNumberButtonListener(new NumberButtonListener());
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this.view.addOperationButtonListener(new OperationButtonListener());
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}
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private class CalculateListener implements ActionListener {
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@Override
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public void actionPerformed(ActionEvent e) {
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String input = view.getInput();
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try {
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double result = model.evaluate(input);
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view.setResult("Результат: " + result);
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} catch (Exception ex) {
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view.setResult("Ошибка: " + ex.getMessage());
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}
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}
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}
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private class NumberButtonListener implements ActionListener {
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@Override
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public void actionPerformed(ActionEvent e) {
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JButton source = (JButton) e.getSource();
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view.setInput(view.getInput() + source.getText());
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}
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}
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private class OperationButtonListener implements ActionListener {
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@Override
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public void actionPerformed(ActionEvent e) {
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JButton source = (JButton) e.getSource();
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String operation = source.getText();
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if ("C".equals(operation)) {
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view.setInput("");
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} else {
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view.setInput(view.getInput() + " " + operation + " ");
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}
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}
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}
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}

‎students/23K0114/23K0114-p022/src/main/java/ru/mirea/practice/s23k0114/lab1/task2/CalculatorModel.java

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package ru.mirea.practice.s23k0114.lab1.task2;
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import java.util.Stack;
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public class CalculatorModel {
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public double evaluate(String expression) {
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Stack<Double> stack = new Stack<>();
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String[] tokens = expression.trim().split("\\s+");
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for (String token : tokens) {
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switch (token) {
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case "+":
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stack.push(stack.pop() + stack.pop());
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break;
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case "-":
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double subtrahend = stack.pop();
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double minuend = stack.pop();
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stack.push(minuend - subtrahend);
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break;
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case "*":
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stack.push(stack.pop() * stack.pop());
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break;
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case "/":
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double divisor = stack.pop();
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double dividend = stack.pop();
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stack.push(dividend / divisor);
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break;
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default:
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stack.push(Double.parseDouble(token));
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break;
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}
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}
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return stack.pop();
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}
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}

‎students/23K0114/23K0114-p022/src/main/java/ru/mirea/practice/s23k0114/lab1/task2/CalculatorView.java

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package ru.mirea.practice.s23k0114.lab1.task2;
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import javax.swing.JButton;
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import javax.swing.JFrame;
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import javax.swing.JLabel;
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import javax.swing.JPanel;
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import javax.swing.JTextArea;
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import javax.swing.JTextField;
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import java.awt.GridLayout;
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import java.awt.event.ActionListener;
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public class CalculatorView {
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private final JTextField inputField;
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private final JTextArea resultArea;
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private final JButton[] numberButtons;
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private final JButton[] operationButtons;
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private final JButton calculateButton;
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private final String[] operations = {"+", "-", "*", "/", "C"};
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public CalculatorView() {
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final JFrame frame = new JFrame("RPN Calculator"); // Объявление как final и инициализация
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inputField = new JTextField(20);
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resultArea = new JTextArea(10, 30);
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calculateButton = new JButton("Вычислить");
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numberButtons = new JButton[10];
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for (int i = 0; i < 10; i++) {
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numberButtons[i] = new JButton(String.valueOf(i));
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}
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operationButtons = new JButton[operations.length];
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for (int i = 0; i < operations.length; i++) {
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operationButtons[i] = new JButton(operations[i]);
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}
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JPanel panel = new JPanel();
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panel.setLayout(new GridLayout(5, 4));
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panel.add(new JLabel("Введите выражение (RPN):"));
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panel.add(inputField);
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panel.add(calculateButton);
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panel.add(resultArea);
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for (JButton numberButton : numberButtons) {
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panel.add(numberButton);
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}
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for (JButton operationButton : operationButtons) {
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panel.add(operationButton);
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}
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resultArea.setEditable(false);
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frame.add(panel);
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frame.setSize(400, 400);
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frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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frame.setVisible(true); // Первое использование переменной frame
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}
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public String getInput() {
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return inputField.getText();
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}
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public void setInput(String input) {
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inputField.setText(input);
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}
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public void setResult(String result) {
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resultArea.setText(result);
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}
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public void addCalculateListener(ActionListener listenForCalcButton) {
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calculateButton.addActionListener(listenForCalcButton);
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}
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public void addNumberButtonListener(ActionListener listener) {
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for (JButton numberButton : numberButtons) {
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numberButton.addActionListener(listener);
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}
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}
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public void addOperationButtonListener(ActionListener listener) {
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for (JButton operationButton : operationButtons) {
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operationButton.addActionListener(listener);
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}
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}
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}

‎students/23K0114/23K0114-p022/src/main/java/ru/mirea/practice/s23k0114/lab1/task2/RpnCalculatorApp.java

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package ru.mirea.practice.s23k0114.lab1.task2;
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public abstract class RpnCalculatorApp {
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public static void main(String[] args) {
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// Create instances of the model and view
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CalculatorModel model = new CalculatorModel();
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CalculatorView view = new CalculatorView();
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// Create the controller
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new CalculatorController(model, view);
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}
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}

‎students/23K0114/23K0114-p023/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<artifactId>23K0114</artifactId>
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<groupId>ru.mirea.practice</groupId>
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<version>2024.1</version>
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<relativePath>../pom.xml</relativePath>
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</parent>
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<artifactId>23K0114-p023</artifactId>
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<description>Массивы</description>
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</project>

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