.idea/.gitignore

@@ -0,0 +1,10 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Ignored default folder with query files
+/queries/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
+# Editor-based HTTP Client requests
+/httpRequests/

.idea/compiler.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <annotationProcessing>
+      <profile name="Maven default annotation processors profile" enabled="true">
+        <sourceOutputDir name="target/generated-sources/annotations" />
+        <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
+        <outputRelativeToContentRoot value="true" />
+        <module name="WS-07-Multithreading-Basics-and-Hashing" />
+      </profile>
+    </annotationProcessing>
+  </component>
+</project>

.idea/encodings.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
+  </component>
+</project>

.idea/jarRepositories.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Central Repository" />
+      <option name="url" value="https://maven.myket.ir" />
+    </remote-repository>
+  </component>
+</project>

.idea/misc.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="25" project-jdk-type="JavaSDK" />
+</project>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>

src/main/java/dev/Main.java

@@ -1,9 +1,11 @@
 package dev;
 
+import dev.model.Student;
 import dev.service.StudentManager;
 import dev.thread.StudentLoader;
 import dev.utils.FileManager;
 
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Scanner;
 
@@ -33,31 +35,32 @@ public class Main {
 
                     List<String> data = FileManager.loadStudents("students.txt");
 
-                    // TODO:
 
-                    // Split data into 3 parts
+                    List<String> part1 = data.subList(0,data.size()/3);
 
-                    List<String> part1 = null;
+                    List<String> part2 = data.subList(data.size()/3,2 * data.size()/3);
 
-                    List<String> part2 = null;
+                    List<String> part3 = data.subList(2 * data.size()/3,data.size());
 
-                    List<String> part3 = null;
 
-                    // TODO:
+                    StudentLoader t1 = new StudentLoader(part1);
 
-                    StudentLoader t1 = null;
+                    StudentLoader t2 = new StudentLoader(part2);
 
-                    StudentLoader t2 = null;
+                    StudentLoader t3 = new StudentLoader(part3);
 
-                    StudentLoader t3 = null;
 
-                    // TODO:
+                    t1.start();
+                    t2.start();
+                    t3.start();
 
-                    // start()
+                    t1.join();
+                    t2.join();
+                    t3.join();
 
-                    // join()
-
-                    // merge results
+                    manager.addStudents(t1.getStudents());
+                    manager.addStudents(t2.getStudents());
+                    manager.addStudents(t3.getStudents());
 
                 }
 

src/main/java/dev/model/Student.java

@@ -40,31 +40,15 @@ public class Student {
 
     @Override
     public int hashCode() {
+        return id % 97;
 
-        // TODO:
-        // Return custom hash
-
-        // Example:
-        // return id % 97;
-
-        return 0;
     }
 
     @Override
     public boolean equals(Object obj) {
-
-        // TODO:
-
-        // Step 1:
-        // Check null
-
-        // Step 2:
-        // Convert obj to Student
-
-        // Step 3:
-        // Compare IDs
-
-        return false;
+        if (obj == null) return false;
+        Student student = (Student) obj;
+        return id == student.id;
     }
 
     @Override

src/main/java/dev/service/StudentManager.java

@@ -11,34 +11,25 @@ public class StudentManager {
 
     public void addStudents(ArrayList<Student> newStudents) {
 
-        // TODO:
-
-        // Merge students
-
-        // Hint:
-        // addAll()
+        students.addAll(newStudents);
 
     }
 
     public Student searchStudent(int id) {
-
-        // TODO:
-
-        // Loop through students
-
-        // Compare IDs
-
+        for (Student student : students) {
+            if (student.getId() == id) {
+                return student;
+            }
+        }
         return null;
     }
 
     public boolean removeStudent(int id) {
-
-        // TODO:
-
-        // Find student
-
-        // Remove student
-
+        for (Student student : students) {
+            if (student.getId() == id) {
+                students.remove(student);
+            }
+        }
         return false;
     }
 

src/main/java/dev/thread/StudentLoader.java

@@ -25,27 +25,15 @@ public class StudentLoader extends Thread {
     @Override
     public void run() {
 
-        // TODO:
-
-        /*
-        Example line:
-
-        1001,Aryan,Computer Science,3.7
-         */
-
         for (String line : lines) {
 
-            // TODO:
-            // split line
-
-            // TODO:
-            // read values
-
-            // TODO:
-            // create Student
-
-            // TODO:
-            // add to students list
+            String[] splits = line.split(",");
+            int id = Integer.parseInt(splits[0]);
+            String name = splits[1];
+            String major = splits[2];
+            double gpa = Double.parseDouble(splits[3]);
+            Student student = new Student(id, name, major, gpa);
+            students.add(student);
 
         }
 

src/main/java/dev/utils/FileManager.java

@@ -17,11 +17,7 @@ public class FileManager {
         String line;
 
         while ((line = reader.readLine()) != null) {
-
-            // TODO:
-
-            // Add line to list
-
+            lines.add(line);
         }
 
         reader.close();