Merge pull request #599 from EgorBurov246/features/lab28

Лабораторная работа №28

Author: Pastor

students/23K0815/23K0815-p28/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>23K0815</artifactId>
+        <groupId>ru.mirea.practice</groupId>
+        <version>2024.1</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+    <artifactId>23K0815-p28</artifactId>
+    <description>Массивы</description>
+</project>

students/23K0815/23K0815-p28/src/main/java/ru/mirea/practice/s0000001/task1/Main.java

@@ -0,0 +1,20 @@
+package ru.mirea.practice.s0000001.task1;
+
+import java.util.HashSet;
+import java.util.TreeSet;
+
+public abstract class Main {
+    public static void main(String[] args) {
+        // Шаг 1: Создание HashSet и добавление элементов
+        HashSet<String> hashSet = new HashSet<>();
+        hashSet.add("Banana");
+        hashSet.add("Apple");
+        hashSet.add("Orange");
+
+        // Шаг 2: Преобразование HashSet в TreeSet
+        TreeSet<String> treeSet = new TreeSet<>(hashSet);
+
+        // Шаг 3: Вывод элементов TreeSet
+        System.out.println("Элементы TreeSet: " + treeSet);
+    }
+}

students/23K0815/23K0815-p28/src/main/java/ru/mirea/practice/s0000001/task2/NameMap.java

@@ -0,0 +1,64 @@
+package ru.mirea.practice.s0000001.task2;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public abstract class NameMap {
+
+    public static void main(String[] args) {
+        Map<String, String> nameMap = createMap();
+
+        int sameFirstNameCount = getSameFirstNameCount(nameMap);
+        int sameLastNameCount = getSameLastNameCount(nameMap);
+
+        System.out.println("Количество людей с одинаковыми именами: " + sameFirstNameCount);
+        System.out.println("Количество людей с одинаковыми фамилиями: " + sameLastNameCount);
+    }
+
+    public static Map<String, String> createMap() {
+        Map<String, String> nameMap = new HashMap<>();
+        nameMap.put("Иванов", "Иван");
+        nameMap.put("Петров", "Петр");
+        nameMap.put("Сидоров", "Сидор");
+        nameMap.put("Кузнецов", "Иван");
+        nameMap.put("Смирнов", "Алексей");
+        nameMap.put("Васильев", "Петр");
+        nameMap.put("Попов", "Сидор");
+        nameMap.put("Зайцев", "Иван");
+        nameMap.put("Федоров", "Алексей");
+        nameMap.put("Морозов", "Петр");
+        return nameMap;
+    }
+
+    public static int getSameFirstNameCount(Map<String, String> nameMap) {
+        Map<String, Integer> firstNameCount = new HashMap<>();
+
+        for (String firstName : nameMap.values()) {
+            firstNameCount.put(firstName, firstNameCount.getOrDefault(firstName, 0) + 1);
+        }
+
+        int count = 0;
+        for (int occurrences : firstNameCount.values()) {
+            if (occurrences > 1) {
+                count += occurrences;
+            }
+        }
+        return count;
+    }
+
+    public static int getSameLastNameCount(Map<String, String> nameMap) {
+        Map<String, Integer> lastNameCount = new HashMap<>();
+
+        for (String lastName : nameMap.keySet()) {
+            lastNameCount.put(lastName, lastNameCount.getOrDefault(lastName, 0) + 1);
+        }
+
+        int count = 0;
+        for (int occurrences : lastNameCount.values()) {
+            if (occurrences > 1) {
+                count += occurrences;
+            }
+        }
+        return count;
+    }
+}

students/23K0815/pom.xml

@@ -36,5 +36,6 @@
         <module>23K0815-p25</module>
         <module>23K0815-p26</module>
         <module>23K0815-p27</module>
+        <module>23K0815-p28</module>
     </modules>
 </project>