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PastorPastor
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Merge pull request #689 from w0RKintILDeaTH/lab21-32
Лабараторная работа №21-32
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‎students/23K0365/23K0365-p21/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>23K0365</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>23K0365-p21</artifactId>
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<description>Массивы</description>
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</project>

‎students/23K0365/23K0365-p21/src/main/java/ru/mirea/practice/s0000001/Main.java

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package ru.mirea.practice.s0000001;
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public final class Main {
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private Main() {
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}
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public static void main(String[] args) {
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System.out.println("первая практическая работа!");
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}
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}

‎students/23K0365/23K0365-p21/src/main/java/ru/mirea/practice/s0000001/Solution.java

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package ru.mirea.practice.s0000001;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Set;
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import java.util.Map;
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import java.util.HashMap;
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import java.util.HashSet;
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public class Solution<T, K, V> { // Integer, String, Boolean
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public List<T> newList(T... elements) {
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return new ArrayList<>(java.util.Arrays.asList(elements));
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}
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public Set<T> newHS(T... elements) {
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return new HashSet<>(java.util.Arrays.asList(elements));
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}
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public Map<K, V> newHM(K[] keys, V[] values) {
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if (keys.length != values.length) {
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System.exit(0);
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}
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Map<K, V> a = new HashMap<>();
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for (int i = 0; i < keys.length; i++) {
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a.put(keys[i], values[i]);
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}
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return a;
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}
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public static void main(String[] args) {
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Solution<Integer, String, Boolean> me = new Solution<>();
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String[] k = {"0", "wow", "yeah", "etc"};
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Boolean[] v = {true, false, true, true};
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List<Integer> myLst = me.newList(12, 15, 523, 235);
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Set<Integer> urSet = me.newHS(12, 15, 523, 235);
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Map<String, Boolean> ourMap = me.newHM(k, v);
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System.out.println(urSet.contains(124));
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System.out.println(myLst.get(0));
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System.out.println(ourMap.get("wow"));
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}
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}
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‎students/23K0365/23K0365-p21/src/main/java/ru/mirea/practice/s0000001/TaskFour.java

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package ru.mirea.practice.s0000001;
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import java.util.Arrays;
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import java.util.LinkedList;
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import java.util.List;
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public class TaskFour<T> {
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List<T> myLst = new LinkedList<>();
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public void saveCatalog(T... args) {
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myLst.addAll(Arrays.asList(args));
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}
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public void getFive() {
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for (int i = 0; i < 5; i++) {
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System.out.print(myLst.get(i) + " ");
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}
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}
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public static void main(String[] args) {
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TaskFour<Boolean> a = new TaskFour<>();
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a.saveCatalog(true,false,true,true,true,false,
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true,true,false,true,true,true,false,true);
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a.getFive();
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}
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}

‎students/23K0365/23K0365-p21/src/main/java/ru/mirea/practice/s0000001/TaskOne.java

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package ru.mirea.practice.s0000001;
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import java.util.Arrays;
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import java.util.LinkedList;
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import java.util.List;
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public class TaskOne<T> {
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private final T[] arr;
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public TaskOne(T[] arr) {
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this.arr = arr;
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}
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public List<T> getUrList() {
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return new LinkedList<>(Arrays.asList(arr));
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}
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public static void main(String[] args) {
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String[] strs = {"q","qw","qwe","qwer"};
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Integer[] ints = {1,2,3,4,5};
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TaskOne a = new TaskOne(strs);
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System.out.println(a.getUrList().get(0));
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TaskOne b = new TaskOne(ints);
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System.out.println(b.getUrList().get(0));
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}
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}

‎students/23K0365/23K0365-p21/src/main/java/ru/mirea/practice/s0000001/TaskThree.java

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package ru.mirea.practice.s0000001;
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public class TaskThree<T> {
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private T[] anotherArr;
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public TaskThree(T[] anotherArr) {
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this.anotherArr = anotherArr;
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}
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public T getEl(int index) {
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return anotherArr[index];
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}
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public static void main(String[] args) {
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Boolean[] bools = {true,false,true};
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Short[] shortPeople = {-32760,-32761,-32762};
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TaskThree<Boolean> a = new TaskThree(bools);
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TaskThree<Short> b = new TaskThree(shortPeople);
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System.out.println(a.getEl(2));
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System.out.println(b.getEl(2));
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}
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}

‎students/23K0365/23K0365-p21/src/main/java/ru/mirea/practice/s0000001/TaskTwo.java

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package ru.mirea.practice.s0000001;
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public class TaskTwo<T> {
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private T[] urArr;
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public TaskTwo(T[] urArr) {
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this.urArr = urArr;
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}
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public void knowType() {
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System.out.println(urArr.getClass().getName());
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}
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public static void main(String[] args) {
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String[] strs = {"q","qw","qwe","qwer"};
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Integer[] ints = {1,2,3,4,5};
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Boolean[] bools = {true,false,true};
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Short[] shortPeople = {-32760,-32761,-32762};
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TaskTwo a = new TaskTwo(strs);
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TaskTwo b = new TaskTwo(ints);
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TaskTwo c = new TaskTwo(bools);
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final TaskTwo d = new TaskTwo(shortPeople);
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a.knowType();
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b.knowType();
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c.knowType();
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d.knowType();
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}
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}

‎students/23K0365/23K0365-p22/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>23K0365</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>23K0365-p22</artifactId>
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<description>Массивы</description>
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</project>

‎students/23K0365/23K0365-p22/src/main/java/ru/mirea/practice/s0000001/Main.java

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package ru.mirea.practice.s0000001;
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public final class Main {
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private Main() {
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}
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public static void main(String[] args) {
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System.out.println("первая практическая работа!");
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}
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}

‎students/23K0365/23K0365-p22/src/main/java/ru/mirea/practice/s0000001/Pln.java

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package ru.mirea.practice.s0000001;
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import java.util.ArrayDeque;
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import java.util.Deque;
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public abstract class Pln {
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private static boolean isOperate(String token) {
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return "+".equals(token) || "-".equals(token) || "*".equals(token) || "/".equals(token) || "^".equals(token);
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}
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private static double operationChoose(double a, double b, String op) {
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switch (op) {
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case "+": return a + b;
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case "-": return a - b;
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case "*": return a * b;
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case "/":
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if (b == 0) {
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throw new ArithmeticException("INFINITY");
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}
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return a / b;
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default: return Double.NaN;
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}
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}
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public static double calculateSmth(String... args) {
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Deque<Double> st = new ArrayDeque<>();
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for (String one : args) {
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try {
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double temp = Double.parseDouble(one);
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st.push(temp);
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} catch (NumberFormatException e) {
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if (isOperate(one)) {
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if (st.size() < 2) {
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System.err.println("too litle amount of opearnds: " + one);
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return Double.NaN;
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}
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double x = st.pop();
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double y = st.pop();
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try {
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st.push(operationChoose(y, x, one));
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} catch (ArithmeticException ae) {
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System.err.println("error: ");
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return Double.NaN;
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}
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} else {
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System.err.println("uncorrect symbol: " + one);
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return Double.NaN;
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}
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} catch (Exception e) {
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System.err.println("incorrect symbols");
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return Double.NaN;
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}
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}
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if (st.size() != 1) {
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System.err.println("error");
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return Double.NaN;
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}
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return st.pop();
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}
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public static void main(String[] args) {
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String[] a = {"2", "3", "*", "4", "5", "*", "+"};
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String[] b = {"2", "3", "4", "5", "6", "*", "+", "-", "/"};
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System.out.println(calculateSmth(a));
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System.out.println(calculateSmth(b));
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}
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}
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