From bf54c701abe6b74c4de9be8bcc9abcc692071032 Mon Sep 17 00:00:00 2001 From: Reza Date: Mon, 25 May 2026 20:28:54 +0330 Subject: [PATCH] complete --- .idea/.gitignore | 10 +++++ .idea/compiler.xml | 13 +++++++ .idea/encodings.xml | 7 ++++ .idea/jarRepositories.xml | 20 ++++++++++ .idea/misc.xml | 12 ++++++ .idea/vcs.xml | 6 +++ src/main/java/dev/Main.java | 37 +++++++++---------- src/main/java/dev/model/Student.java | 26 +++---------- src/main/java/dev/service/StudentManager.java | 28 +++----------- src/main/java/dev/thread/StudentLoader.java | 32 ++++------------ src/main/java/dev/utils/FileManager.java | 10 +---- 11 files changed, 104 insertions(+), 97 deletions(-) create mode 100644 .idea/.gitignore create mode 100644 .idea/compiler.xml create mode 100644 .idea/encodings.xml create mode 100644 .idea/jarRepositories.xml create mode 100644 .idea/misc.xml create mode 100644 .idea/vcs.xml diff --git a/.idea/.gitignore b/.idea/.gitignore new file mode 100644 index 0000000..ab1f416 --- /dev/null +++ b/.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/ diff --git a/.idea/compiler.xml b/.idea/compiler.xml new file mode 100644 index 0000000..a590144 --- /dev/null +++ b/.idea/compiler.xml @@ -0,0 +1,13 @@ + + + + + + + + + + + + + \ No newline at end of file diff --git a/.idea/encodings.xml b/.idea/encodings.xml new file mode 100644 index 0000000..aa00ffa --- /dev/null +++ b/.idea/encodings.xml @@ -0,0 +1,7 @@ + + + + + + + \ No newline at end of file diff --git a/.idea/jarRepositories.xml b/.idea/jarRepositories.xml new file mode 100644 index 0000000..a9076af --- /dev/null +++ b/.idea/jarRepositories.xml @@ -0,0 +1,20 @@ + + + + + + + + + + + \ No newline at end of file diff --git a/.idea/misc.xml b/.idea/misc.xml new file mode 100644 index 0000000..eba6e1f --- /dev/null +++ b/.idea/misc.xml @@ -0,0 +1,12 @@ + + + + + + + + \ No newline at end of file diff --git a/.idea/vcs.xml b/.idea/vcs.xml new file mode 100644 index 0000000..35eb1dd --- /dev/null +++ b/.idea/vcs.xml @@ -0,0 +1,6 @@ + + + + + + \ No newline at end of file diff --git a/src/main/java/dev/Main.java b/src/main/java/dev/Main.java index 19ca657..20f417e 100644 --- a/src/main/java/dev/Main.java +++ b/src/main/java/dev/Main.java @@ -33,32 +33,29 @@ public class Main { List 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 part1 = null; + List p1 = data.subList(0, end1); + List p2 = data.subList(end1, end2); + List p3 = data.subList(end2, total); - List part2 = null; + StudentLoader t1 = new StudentLoader(p1); + StudentLoader t2 = new StudentLoader(p2); + StudentLoader t3 = new StudentLoader(p3); - List 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 -> { diff --git a/src/main/java/dev/model/Student.java b/src/main/java/dev/model/Student.java index f0484f4..32593ad 100644 --- a/src/main/java/dev/model/Student.java +++ b/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 diff --git a/src/main/java/dev/service/StudentManager.java b/src/main/java/dev/service/StudentManager.java index 403a1c6..fb953f7 100644 --- a/src/main/java/dev/service/StudentManager.java +++ b/src/main/java/dev/service/StudentManager.java @@ -10,36 +10,18 @@ public class StudentManager { private final ArrayList students = new ArrayList<>(); public void addStudents(ArrayList 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() { diff --git a/src/main/java/dev/thread/StudentLoader.java b/src/main/java/dev/thread/StudentLoader.java index ab47522..2169d69 100644 --- a/src/main/java/dev/thread/StudentLoader.java +++ b/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 lines; - // Local student storage + private final ArrayList 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)); } } diff --git a/src/main/java/dev/utils/FileManager.java b/src/main/java/dev/utils/FileManager.java index da7f6f5..e8538a7 100644 --- a/src/main/java/dev/utils/FileManager.java +++ b/src/main/java/dev/utils/FileManager.java @@ -11,22 +11,14 @@ public class FileManager { public static List loadStudents(String path) throws Exception { List 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; } - } \ No newline at end of file