Added realisation of the list and stream api

Author: vladikigs

java-collections.iml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8">
+    <output url="file://$MODULE_DIR$/target/classes" />
+    <output-test url="file://$MODULE_DIR$/target/test-classes" />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/resources" type="java-test-resource" />
+      <excludeFolder url="file://$MODULE_DIR$/target" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.jupiter:junit-jupiter:5.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.jupiter:junit-jupiter-api:5.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.apiguardian:apiguardian-api:1.1.0" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.opentest4j:opentest4j:1.2.0" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.platform:junit-platform-commons:1.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.jupiter:junit-jupiter-params:5.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.jupiter:junit-jupiter-engine:5.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.platform:junit-platform-engine:1.5.2" level="project" />
+  </component>
+</module>

src/main/java/com/epam/izh/rd/online/service/SimpleTextStatisticsAnalyzer.java

@@ -2,6 +2,7 @@
 
 import com.epam.izh.rd.online.helper.Direction;
 
+import java.lang.reflect.Array;
 import java.util.*;
 
 import static java.util.Collections.*;
@@ -23,7 +24,11 @@ public class SimpleTextStatisticsAnalyzer implements TextStatisticsAnalyzer {
      */
     @Override
     public int countSumLengthOfWords(String text) {
-        return 0;
+        int countSumLengthOfWords = 0;
+        for (String word : getWords(text)) {
+            countSumLengthOfWords += word.length();
+        }
+        return countSumLengthOfWords;
     }
 
     /**
@@ -34,7 +39,7 @@ public int countSumLengthOfWords(String text) {
      */
     @Override
     public int countNumberOfWords(String text) {
-        return 0;
+        return getWords(text).size();
     }
 
     /**
@@ -44,7 +49,7 @@ public int countNumberOfWords(String text) {
      */
     @Override
     public int countNumberOfUniqueWords(String text) {
-        return 0;
+        return getUniqueWords(text).size();
     }
 
     /**
@@ -57,7 +62,7 @@ public int countNumberOfUniqueWords(String text) {
      */
     @Override
     public List<String> getWords(String text) {
-        return emptyList();
+        return Arrays.asList(text.split("[\\W]+"));
     }
 
     /**
@@ -70,7 +75,7 @@ public List<String> getWords(String text) {
      */
     @Override
     public Set<String> getUniqueWords(String text) {
-        return emptySet();
+        return new HashSet<>(getWords(text));
     }
 
     /**
@@ -82,7 +87,15 @@ public Set<String> getUniqueWords(String text) {
      */
     @Override
     public Map<String, Integer> countNumberOfWordsRepetitions(String text) {
-        return emptyMap();
+        Map<String, Integer> repeatWords = new HashMap<>();
+        for (String word : getWords(text)) {
+            Integer q = repeatWords.put(word, 1);
+            if (q != null) {
+                repeatWords.put(word, q + 1);
+            }
+
+        }
+        return repeatWords;
     }
 
     /**
@@ -95,6 +108,13 @@ public Map<String, Integer> countNumberOfWordsRepetitions(String text) {
      */
     @Override
     public List<String> sortWordsByLength(String text, Direction direction) {
-        return emptyList();
+        List<String> words = new ArrayList<>(getUniqueWords(text));
+        words.sort(Comparator.comparingInt(String::length));
+        if (direction.name().equals("DESC")) {
+            Collections.reverse(words);
+        }
+        return words;
     }
+
+
 }

src/main/java/com/epam/izh/rd/online/service/StreamApiTextStatisticsAnalyzer.java

@@ -2,12 +2,14 @@
 
 import com.epam.izh.rd.online.helper.Direction;
 
-import java.util.Collections;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
+import java.util.*;
+import java.util.stream.Collector;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
+import java.util.stream.Stream;
 
 import static java.util.Collections.*;
+import static java.util.stream.Collectors.reducing;
 
 /**
  * Данный класс обязан использовать StreamApi из функционала Java 8. Функциональность должна быть идентична
@@ -16,36 +18,43 @@
 public class StreamApiTextStatisticsAnalyzer implements TextStatisticsAnalyzer {
     @Override
     public int countSumLengthOfWords(String text) {
-        return 0;
+        return getWords(text).stream().mapToInt(String::length).sum();
     }
 
     @Override
     public int countNumberOfWords(String text) {
-        return 0;
+        return Math.toIntExact(getWords(text).stream().count());
     }
 
     @Override
     public int countNumberOfUniqueWords(String text) {
-        return 0;
+        return Math.toIntExact(getWords(text).stream().distinct().count());
     }
 
     @Override
     public List<String> getWords(String text) {
-        return emptyList();
+        return Stream.of(text.split("[\\W]+")).collect(Collectors.toList());
     }
 
     @Override
     public Set<String> getUniqueWords(String text) {
-        return emptySet();
+        return getWords(text).stream().collect(Collectors.toSet());
     }
 
     @Override
     public Map<String, Integer> countNumberOfWordsRepetitions(String text) {
-        return emptyMap();
+        return getWords(text).stream().collect(Collectors.groupingBy(s -> s, reducing(0, e -> 1, Integer::sum)));
     }
 
     @Override
     public List<String> sortWordsByLength(String text, Direction direction) {
-        return emptyList();
+
+            return getWords(text).stream()
+                    .sorted(
+                            direction == Direction.ASC?
+                                    Comparator.comparing(String::length):
+                                    Comparator.comparing(String::length).reversed()
+                    ).collect(Collectors.toList());
+
     }
 }