complete

.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://mirror-maven.runflare.com/maven2" />
+    </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" 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

@@ -33,32 +33,29 @@ public class Main {
 
                     List<String> data = FileManager.loadStudents("students.txt");
 
-                    // TODO:
+                    int total = data.size();
+                    int partSize = total / 3;
+                    int rem = total % 3;
 
-                    // Split data into 3 parts
+                    int end1 = partSize + (rem > 0 ? 1 : 0);
+                    int end2 = end1 + partSize + (rem > 1 ? 1 : 0);
 
-                    List<String> part1 = null;
+                    List<String> p1 = data.subList(0, end1);
+                    List<String> p2 = data.subList(end1, end2);
+                    List<String> p3 = data.subList(end2, total);
 
-                    List<String> part2 = null;
+                    StudentLoader t1 = new StudentLoader(p1);
+                    StudentLoader t2 = new StudentLoader(p2);
+                    StudentLoader t3 = new StudentLoader(p3);
 
-                    List<String> part3 = null;
+                    t1.start(); t2.start(); t3.start();
+                    t1.join();  t2.join();  t3.join();
 
-                    // TODO:
-
-                    StudentLoader t1 = null;
-
-                    StudentLoader t2 = null;
-
-                    StudentLoader t3 = null;
-
-                    // TODO:
-
-                    // start()
-
-                    // join()
-
-                    // merge results
+                    manager.addStudents(t1.getStudents());
+                    manager.addStudents(t2.getStudents());
+                    manager.addStudents(t3.getStudents());
 
+                    System.out.println("Students loaded.");
                 }
 
                 case 2 -> {

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

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

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

@@ -10,36 +10,18 @@ public class StudentManager {
     private final ArrayList<Student> students = new ArrayList<>();
 
     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 s : students) {
+            if (s.getId() == id) return s;
+        }
         return null;
     }
 
     public boolean removeStudent(int id) {
-
-        // TODO:
-
-        // Find student
-
-        // Remove student
-
-        return false;
+        return students.removeIf(s -> s.getId() == id);
     }
 
     public void printStudents() {

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

@@ -9,11 +9,11 @@ import java.util.List;
 
 public class StudentLoader extends Thread {
 
-    // Assigned file lines
+
 
     private final List<String> lines;
 
-    // Local student storage
+
 
     private final ArrayList<Student> students = new ArrayList<>();
 
@@ -24,29 +24,13 @@ 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[] parts = line.split(",");
+            int id = Integer.parseInt(parts[0]);
+            String name = parts[1];
+            String major = parts[2];
+            double gpa = Double.parseDouble(parts[3]);
+            students.add(new Student(id, name, major, gpa));
         }
 
     }

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

@@ -11,22 +11,14 @@ public class FileManager {
     public static List<String> loadStudents(String path) throws Exception {
 
         List<String> lines = new ArrayList<>();
-
         BufferedReader reader = new BufferedReader(new FileReader(path));
 
         String line;
-
         while ((line = reader.readLine()) != null) {
-
-            // TODO:
-
-            // Add line to list
-
+            lines.add(line);
         }
 
         reader.close();
-
         return lines;
     }
-
 }

src/main/java/lecture/multithreading/timeout/Main.java

@@ -1,25 +1,10 @@
 package lecture.multithreading.timeout;
 
 
-import java.util.Scanner;
 
 public class Main {
     public static void main(String[] args) {
-
-        Scanner scanner = new Scanner(System.in);
-
-        System.out.println("you have 10 seconds: ");
-        System.out.print("enter your name: ");
-
-        MyRunnable myRunnable = new MyRunnable();
-        Thread thread = new Thread(myRunnable);
-        thread.setDaemon(true);
-        thread.start();
-
-        String name = scanner.nextLine();
-        System.out.println("hello " + name);
-
-        scanner.close();
+        // TODO
     }
 }
 

src/main/java/lecture/multithreading/timeout/MyRunnable.java

@@ -1,22 +0,0 @@
-package lecture.multithreading.timeout;
-
-public class MyRunnable implements Runnable{
-
-    @Override
-    public void run(){
-
-        for (int i = 1; i <= 10 ; i++){
-            try {
-                Thread.sleep(1000);
-            } catch (InterruptedException e) {
-                System.out.println("thread was interrupted");
-            }
-
-            if(i == 10){
-                System.out.println("time is up");
-                System.exit(0);
-            }
-
-        }
-    }
-}