fourth step with main tester

.idea/workspace.xml

@@ -4,9 +4,7 @@
     <option name="autoReloadType" value="SELECTIVE" />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="2698c064-0a25-4fa9-b373-a085833ed750" name="Changes" comment="first step">
-      <change afterPath="$PROJECT_DIR$/src/main/java/org/example/summers/Summer.java" afterDir="false" />
-    </list>
+    <list default="true" id="2698c064-0a25-4fa9-b373-a085833ed750" name="Changes" comment="third step" />
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
     <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
@@ -54,7 +52,21 @@
       <option name="project" value="LOCAL" />
       <updated>1700070627028</updated>
     </task>
-    <option name="localTasksCounter" value="2" />
+    <task id="LOCAL-00002" summary="second step">
+      <created>1700070804720</created>
+      <option name="number" value="00002" />
+      <option name="presentableId" value="LOCAL-00002" />
+      <option name="project" value="LOCAL" />
+      <updated>1700070804720</updated>
+    </task>
+    <task id="LOCAL-00003" summary="third step">
+      <created>1700071001900</created>
+      <option name="number" value="00003" />
+      <option name="presentableId" value="LOCAL-00003" />
+      <option name="project" value="LOCAL" />
+      <updated>1700071001900</updated>
+    </task>
+    <option name="localTasksCounter" value="4" />
     <servers />
   </component>
   <component name="Vcs.Log.Tabs.Properties">
@@ -70,6 +82,8 @@
   </component>
   <component name="VcsManagerConfiguration">
     <MESSAGE value="first step" />
-    <option name="LAST_COMMIT_MESSAGE" value="first step" />
+    <MESSAGE value="second step" />
+    <MESSAGE value="third step" />
+    <option name="LAST_COMMIT_MESSAGE" value="third step" />
   </component>
 </project>
\ No newline at end of file

pom.xml

@@ -7,7 +7,19 @@
     <groupId>org.example</groupId>
     <artifactId>ExecutorServiceHW</artifactId>
     <version>1.0-SNAPSHOT</version>
-
+    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.13.2</version>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <version>RELEASE</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
     <properties>
         <maven.compiler.source>17</maven.compiler.source>
         <maven.compiler.target>17</maven.compiler.target>

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

 package org.example;
+import org.example.data.TestData;
+import org.example.parallelsummers.*;
 
 public class Main {
     public static void main(String[] args) {
-        System.out.println("Hello world!");
+        /*
+        Use Main function to make unit testing
+        */
+        int start = 0;
+        int end = 20;
+        int[] data = TestData.createData(start, end);
+        long result = SequentialSummer.sum(SequentialSummer.allPrimes(data));
+        System.out.println("result is " + result);
+        int threadCount = 25;
+        System.out.println("Sequential summer:" + result);
+        System.out.println("Parallel summer 1: " + ParallelSummer0.sum(data, threadCount));
+        System.out.println("Parallel summer 2: " + ParallelSummer1.sum(data, threadCount));
+        System.out.println("Parallel summer 3: " + ParallelSummer2.sum(data, threadCount));
+        System.out.println("Parallel summer 4: " + ParallelSummer3.sum(data, threadCount));
+        System.out.println("Parallel summer 5: " + ParallelSummer4.sum(data, threadCount));
+
     }
 }
\ No newline at end of file

src/main/java/org/example/SequentialSummer.java

+package org.example;
+
+import java.util.ArrayList;
+import java.util.List;
+/*
+The SequentialSummer class calculate the number of primes sequentially.
+*/
+public class SequentialSummer {
+
+    public static long sum(List<Integer> data) {
+        long sum = data.size();
+        return sum;
+    }
+    /*
+    The allPrimes function find all primes in the data array sequentially using isPrime function.
+    */
+    public static List<Integer> allPrimes(int[] data)
+    {
+        List<Integer> primes = new ArrayList<>();
+        for (int i = data[0]; i <= data[data.length -1]; i++) {
+            if (isPrime(i)) {
+                primes.add(i);
+            }
+        }
+        return primes;
+    }
+
+    private static boolean isPrime(int num) {
+        if (num <= 1) {
+            return false;
+        }
+        for (int i = 2; i*i <= num; i++) {
+            if (num % i == 0) {
+                return false;
+            }
+        }
+        return true;
+    }
+}