Initial

.gitignore

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+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

build.gradle

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+plugins {
+    id 'java'
+}
+
+group = 'ru.ilug'
+version = '1.0-SNAPSHOT'
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testImplementation platform('org.junit:junit-bom:5.10.0')
+    testImplementation 'org.junit.jupiter:junit-jupiter'
+}
+
+test {
+    useJUnitPlatform()
+}

gradle/wrapper/gradle-wrapper.properties

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+#Wed Jan 21 09:42:09 MSK 2026
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

settings.gradle

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+rootProject.name = 'map-training'

src/main/java/ru/ilug/c1_word_counter/MainTest.java

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+package ru.ilug.c1_word_counter;
+
+import java.util.Map;
+
+public class MainTest {
+
+    public static void main(String[] args) {
+        WordCounter wordCounter = null;
+
+        String text = "Внутри Map данные хранятся в формате “ключ”-”значение”, то есть по парам. И в качестве ключей, и в качестве значений могут выступать любые объекты — числа, строки или объекты других классов.";
+        Map<String, Integer> wordsCountMap = wordCounter.countWords(text);
+
+        System.out.println("Words count: " + wordsCountMap);
+    }
+
+}

src/main/java/ru/ilug/c1_word_counter/WordCounter.java

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+package ru.ilug.c1_word_counter;
+
+import java.util.Map;
+
+public interface WordCounter {
+
+    Map<String, Integer> countWords(String text);
+
+}

src/main/java/ru/ilug/c2_phone_book/MainTest.java

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+package ru.ilug.c2_phone_book;
+
+public class MainTest {
+
+    public static void main(String[] args) {
+        PhoneBook phoneBook = null;
+
+        phoneBook.addContact("Ivan", "+1 (234) 567 89 10");
+        phoneBook.addContact("Dima", "+3 (456) 789 10 11");
+        phoneBook.addContact("Andrey", "+8 (910) 111 21 31");
+        phoneBook.addContact("Maria", "+4 (234) 567 89 10");
+
+        System.out.println("Maria phone: " + phoneBook.findPhoneByName("Maria"));
+        System.out.println("Dima phone: " + phoneBook.findPhoneByName("Dima"));
+
+        phoneBook.removeContactByName("Dima");
+
+        System.out.println("Dima phone: " + phoneBook.findPhoneByName("Dima"));
+    }
+
+}

src/main/java/ru/ilug/c2_phone_book/PhoneBook.java

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+package ru.ilug.c2_phone_book;
+
+public interface PhoneBook {
+
+    void addContact(String name, String phone);
+
+    String findPhoneByName(String name);
+
+    void removeContactByName(String name);
+
+}

src/main/java/ru/ilug/c3_simple_translator/MainTest.java

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+package ru.ilug.c3_simple_translator;
+
+public class MainTest {
+
+    public static void main(String[] args) {
+        SimpleTranslator simpleTranslator = null;
+
+        simpleTranslator.addWordTranslate("подборка", "selection");
+        simpleTranslator.addWordTranslate("практических", "practical");
+        simpleTranslator.addWordTranslate("задач", "tasks");
+        simpleTranslator.addWordTranslate("статистическая", "statistical");
+        simpleTranslator.addWordTranslate("оценка", "evaluation");
+        simpleTranslator.addWordTranslate("Линии", "line");
+        simpleTranslator.addWordTranslate("производства", "production");
+
+        String text1 = "Подборка практических задач";
+        String text2 = "Статистическая оценка линии производства";
+
+        System.out.println(text1 + " -> " + simpleTranslator.translate(text1));
+        System.out.println(text2 + " -> " + simpleTranslator.translate(text2));
+    }
+
+}

src/main/java/ru/ilug/c3_simple_translator/SimpleTranslator.java

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+package ru.ilug.c3_simple_translator;
+
+public interface SimpleTranslator {
+
+    void addWordTranslate(String word, String translate);
+
+    String translate(String text);
+
+}

src/main/java/ru/ilug/c4_school_journal/MainTest.java

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+package ru.ilug.c4_school_journal;
+
+import java.util.List;
+import java.util.Map;
+
+public class MainTest {
+
+    public static void main(String[] args) {
+        SchoolJournal schoolJournal = null;
+
+        schoolJournal.addScore("Ivan", 4);
+        schoolJournal.addScores("Andrey", List.of(3, 4, 4));
+        schoolJournal.addScores("Maria", List.of(5, 5, 4, 5, 4));
+        schoolJournal.addScores("Dima", List.of(4, 5, 3, 5, 5));
+        schoolJournal.addScore("Alexandr", 3);
+
+        Map<String, Float> averagesScores = schoolJournal.getAverageScorePerStudent();
+        System.out.println("Average students scores: " + averagesScores);
+
+        List<String> students1 = schoolJournal.studentsWithAverageScoreHighThen(4.5f);
+        System.out.println("Students with average score high then 4.5:" + students1);
+
+        List<String> students2 = schoolJournal.studentsWithAverageScoreHighThen(3);
+        System.out.println("Students with average score high then 3:" + students2);
+    }
+
+}

src/main/java/ru/ilug/c4_school_journal/SchoolJournal.java

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+package ru.ilug.c4_school_journal;
+
+import java.util.Collection;
+import java.util.List;
+import java.util.Map;
+
+public interface SchoolJournal {
+
+    void addScore(String name, int score);
+
+    void addScores(String name, Collection<Integer> scores);
+
+    Map<String, Float> getAverageScorePerStudent();
+
+    List<String> studentsWithAverageScoreHighThen(float averageScore);
+
+}

src/main/java/ru/ilug/c5_char_frequency/CharFrequency.java

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+package ru.ilug.c5_char_frequency;
+
+import java.util.Map;
+
+public interface CharFrequency {
+
+    Map<Character, Integer> getSortedCharFrequency(String text);
+
+}

src/main/java/ru/ilug/c5_char_frequency/MainTest.java

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+package ru.ilug.c5_char_frequency;
+
+public class MainTest {
+
+    public static void main(String[] args) {
+        CharFrequency charFrequency = null;
+
+        String text1 = "Мама мыла Милку мылом";
+        String text2 = "Карл у Клары украл рекламу, а Клара у Карла украла бюджет.";
+
+        System.out.println("First char frequency: " + charFrequency.getSortedCharFrequency(text1));
+        System.out.println("Second char frequency: " + charFrequency.getSortedCharFrequency(text2));
+    }
+
+}

src/main/java/ru/ilug/c6_word_group/MainTest.java

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+package ru.ilug.c6_word_group;
+
+public class MainTest {
+
+    public static void main(String[] args) {
+        WordGroup wordGroup = null;
+
+        String text1 = "Карл у Клары украл рекламу, а Клара у Карла украла бюджет.";
+        String text2 = "Из кузова в кузов шла перегрузка арбузов. В грозу, в грязи от груза арбузов развалился кузов.";
+
+        System.out.println("First grouped words: " + wordGroup.groupWordsByLength(text1));
+        System.out.println("Second grouped words: " + wordGroup.groupWordsByLength(text2));
+    }
+
+}

src/main/java/ru/ilug/c6_word_group/WordGroup.java

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+package ru.ilug.c6_word_group;
+
+import java.util.List;
+import java.util.Map;
+
+public interface WordGroup {
+
+    Map<Integer, List<String>> groupWordsByLength(String text);
+
+}