ДЗ Коллекции в Java

src/main/java/org/example/collections/ArrayDeque/Main.java

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+package org.example.collections.ArrayDeque;
+
+public class Main {
+    public static void main(String[] args) {
+        //Задача 1
+        Task1 task1 = new Task1();
+        task1.addNumber(3);
+        task1.addNumber(6);
+        task1.addNumber(1);
+        task1.addNumber(8);
+        task1.addNumber(2);
+        task1.printDeque();
+    }
+}

src/main/java/org/example/collections/ArrayDeque/Task1.java

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+package org.example.collections.ArrayDeque;
+
+import java.util.ArrayDeque;
+
+public class Task1 {
+    private ArrayDeque<Integer> deque;
+
+    public Task1() {
+        this.deque = new ArrayDeque<>();
+    }
+
+    public void addNumber(int number) {
+        deque.add(number);
+    }
+
+    public void printDeque() {
+        System.out.println("Список элементов:");
+        deque.forEach(System.out::println);
+        System.out.println();
+    }
+}

src/main/java/org/example/collections/ArrayList/Main.java

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+package org.example.collections.ArrayList;
+
+public class Main {
+    public static void main(String[] args) {
+        //Задача 1
+        Task1 task1 = new Task1();
+        task1.addNumber(10);
+        task1.printList();
+
+        //Задача 2
+        Task2 task2 = new Task2();
+        task2.addNumber(2);
+        task2.addNumber(1);
+        task2.addNumber(6);
+        task2.addNumber(5);
+        task2.addNumber(9);
+        task2.addNumber(7);
+        task2.printEvenNumbers();
+    }
+}

src/main/java/org/example/collections/ArrayList/Task1.java

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+package org.example.collections.ArrayList;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+
+public class Task1 {
+    private ArrayList<Integer> list;
+
+    public Task1() {
+        this.list = new ArrayList<>(Arrays.asList(1, 2, 3, 4, 5));
+    }
+
+    public void addNumber(int number) {
+        list.add(number);
+    }
+
+    public void printList() {
+        System.out.println("Список чисел:");
+        System.out.println(list);
+    }
+}

src/main/java/org/example/collections/ArrayList/Task2.java

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+package org.example.collections.ArrayList;
+
+import java.util.ArrayList;
+
+public class Task2 {
+    private ArrayList<Integer> list;
+
+    public Task2() {
+        this.list = new ArrayList<>();
+    }
+
+    public void addNumber(int number) {
+        list.add(number);
+    }
+
+    public void printEvenNumbers() {
+        System.out.println("Список четных чисел:");
+        for (int num : list) {
+            if (num % 2 == 0) {
+                System.out.println(num);
+            }
+        }
+    }
+}

src/main/java/org/example/collections/HashMap/Main.java

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+package org.example.collections.HashMap;
+
+import java.util.Scanner;
+
+public class Main {
+    public static void main(String[] args) {
+        //Задача 1
+        Task1 task1 = new Task1();
+        task1.addNameAge("Маша", 55);
+        task1.addNameAge("Саша", 25);
+        task1.addNameAge("Даша", 35);
+        task1.addNameAge("Паша", 45);
+        task1.addNameAge("Глаша", 105);
+        task1.printNameAge();
+
+        //Задача 2
+        Task2 task2 = new Task2();
+        task2.addNameAge("Маша", 55);
+        task2.addNameAge("Саша", 25);
+        task2.addNameAge("Даша", 35);
+        task2.addNameAge("Паша", 45);
+        task2.addNameAge("Глаша", 105);
+
+        Scanner scanner = new Scanner(System.in);
+        System.out.println("Введите имя");
+        String name = scanner.nextLine();
+        task2.checkName(name);
+        scanner.close();
+
+    }
+}

src/main/java/org/example/collections/HashMap/Task1.java

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+package org.example.collections.HashMap;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class Task1 {
+    private HashMap<String, Integer> map;
+
+    public Task1() {
+        this.map = new HashMap<>();
+    }
+
+    public void addNameAge(String name, int age) {
+        map.put(name, age);
+    }
+
+    public void printNameAge() {
+        System.out.println("Словарь содержит следующие элементы: ");
+        for (Map.Entry<String, Integer> entry : map.entrySet()) {
+            String name = entry.getKey();
+            int age = entry.getValue();
+            System.out.println(name + " - " + age + " лет");
+        }
+    }
+}

src/main/java/org/example/collections/HashMap/Task2.java

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+package org.example.collections.HashMap;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class Task2 {
+    private HashMap<String, Integer> map;
+
+    public Task2() {
+        this.map = new HashMap<>();
+    }
+
+    public void addNameAge(String name, int age) {
+        map.put(name, age);
+    }
+
+    public void checkName(String name) {
+        String result = " не найдено";
+        for (Map.Entry<String, Integer> entry : map.entrySet()) {
+            if (entry.getKey().equals(name)) {
+                result = " найдено";
+                break;
+            }
+        }
+        System.out.println("Имя " + name + result);
+    }
+}

src/main/java/org/example/collections/HashSet/Main.java

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+package org.example.collections.HashSet;
+
+public class Main {
+    public static void main(String[] args) {
+        //Задача 1
+        Task1 task1 = new Task1();
+        task1.addNumber(1);
+        task1.addNumber(3);
+        task1.addNumber(7);
+        task1.addNumber(2);
+        task1.addNumber(5);
+        task1.printSet();
+
+        //Задача 2
+        Task2 task2 = new Task2();
+        task2.addNumber(1);
+        task2.addNumber(2);
+        task2.addNumber(3);
+        task2.addNumber(4);
+        task2.addNumber(5);
+        task2.addNumber(6);
+        task2.addNumber(7);
+        task2.addNumber(8);
+        task2.addNumber(9);
+        task2.addNumber(10);
+
+        task2.checkNumber(3);
+        task2.checkNumber(30);
+    }
+}

src/main/java/org/example/collections/HashSet/Task1.java

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+package org.example.collections.HashSet;
+
+import java.util.HashSet;
+
+public class Task1 {
+    private HashSet<Integer> set;
+
+    public Task1() {
+        this.set = new HashSet<>();
+    }
+
+    public void addNumber(int num) {
+        set.add(num);
+    }
+
+    public void printSet() {
+        System.out.println("Список чисел:");
+        System.out.println(set);
+    }
+}

src/main/java/org/example/collections/HashSet/Task2.java

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+package org.example.collections.HashSet;
+
+import java.util.HashSet;
+
+public class Task2 {
+    private HashSet<Integer> set;
+
+    public Task2() {
+        this.set = new HashSet<>();
+    }
+
+    public void addNumber(int num) {
+        set.add(num);
+    }
+
+    public void checkNumber(int number) {
+        if (set.contains(number)) {
+            System.out.println("Список содержит число " + number);
+        } else {
+            System.out.println("Список не содержит число " + number);
+        }
+    }
+}

src/main/java/org/example/collections/LinkedHashMap/Main.java

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+package org.example.collections.LinkedHashMap;
+
+public class Main {
+    public static void main(String[] args) {
+        //Задача 1
+        Task1 task1 = new Task1();
+        task1.addInfo("Маша", 554);
+        task1.addInfo("Саша", 2);
+        task1.addInfo("Даша", 5474);
+        task1.addInfo("Паша", 989787);
+        task1.addInfo("Антоша", 12345);
+        task1.printInfo();
+    }
+}

src/main/java/org/example/collections/LinkedHashMap/Task1.java

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+package org.example.collections.LinkedHashMap;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+public class Task1 {
+    private LinkedHashMap<String, Integer> map;
+
+    public Task1() {
+        this.map = new LinkedHashMap<>();
+    }
+
+    public void addInfo(String name, int number) {
+        map.put(name, number);
+    }
+
+    public void printInfo() {
+        System.out.println("Перечень всех элементов:");
+        for (Map.Entry<String, Integer> entry : map.entrySet()) {
+            String name = entry.getKey();
+            int number = entry.getValue();
+            System.out.println("Имя: " + name + " , номер: " + number);
+        }
+    }
+}

src/main/java/org/example/collections/LinkedHashSet/Main.java

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+package org.example.collections.LinkedHashSet;
+
+public class Main {
+    public static void main(String[] args) {
+        //Задача 1
+        Task1 task1 = new Task1();
+        task1.addString("Строка 1");
+        task1.addString("Строка 3");
+        task1.addString("Строка 2");
+        task1.addString("Строка 4");
+        task1.addString("Строка 5");
+        task1.printSet();
+    }
+}

src/main/java/org/example/collections/LinkedHashSet/Task1.java

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+package org.example.collections.LinkedHashSet;
+
+import java.util.LinkedHashSet;
+
+public class Task1 {
+    private LinkedHashSet<String> set;
+
+    public Task1() {
+        this.set = new LinkedHashSet<>();
+    }
+
+    public void addString(String str) {
+        set.add(str);
+    }
+
+    public void printSet() {
+        System.out.println("Список строк:");
+        set.forEach(System.out::println);
+        System.out.println();
+    }
+}

src/main/java/org/example/collections/LinkedList/Main.java

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+package org.example.collections.LinkedList;
+
+public class Main {
+    public static void main(String[] args) {
+        //Задача 1
+        Task1 task1 = new Task1();
+        task1.addString("Строка 1");
+        task1.addString("Строка 2");
+        task1.addString("Строка 3");
+        task1.addString("Строка 4");
+        task1.addString("Строка 5");
+        task1.printList();
+
+        //Задача 2
+        Task2 task2 = new Task2();
+        task2.addTask("Задача 1");
+        task2.addTask("Задача 2");
+        task2.addTask("Задача 3");
+        task2.processTasks();
+    }
+}