From 2c98b0a522f670760cc94b0d58a7e106fbfba767 Mon Sep 17 00:00:00 2001 From: Arefe Date: Mon, 25 May 2026 11:20:21 +0330 Subject: [PATCH] complete all parts --- .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 | 36 +++++++++---------- src/main/java/dev/model/Student.java | 23 +++--------- src/main/java/dev/service/StudentManager.java | 34 +++++++++--------- src/main/java/dev/thread/StudentLoader.java | 27 ++++---------- src/main/java/dev/utils/FileManager.java | 4 +-- 11 files changed, 114 insertions(+), 78 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..f4fe6ed --- /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..883ce58 100644 --- a/src/main/java/dev/Main.java +++ b/src/main/java/dev/Main.java @@ -1,5 +1,6 @@ package dev; +import dev.model.Student; import dev.service.StudentManager; import dev.thread.StudentLoader; import dev.utils.FileManager; @@ -33,32 +34,30 @@ public class Main { List data = FileManager.loadStudents("students.txt"); - // TODO: + List part1 = data.subList(0, 20); - // Split data into 3 parts + List part2 = data.subList(20, 40); - List part1 = null; + List part3 = data.subList(40, 60); - List part2 = null; - List part3 = null; + StudentLoader t1 = new StudentLoader(part1); - // TODO: + StudentLoader t2 = new StudentLoader(part2); - StudentLoader t1 = null; + StudentLoader t3 = new StudentLoader(part3); - StudentLoader t2 = null; + t1.start(); + t2.start(); + t3.start(); - StudentLoader t3 = null; - - // TODO: - - // start() - - // join() - - // merge results + t1.join(); + t2.join(); + t3.join(); + manager.addStudents(t1.getStudents()); + manager.addStudents(t2.getStudents()); + manager.addStudents(t3.getStudents()); } case 2 -> { @@ -67,7 +66,8 @@ public class Main { int id = scanner.nextInt(); - System.out.println(manager.searchStudent(id)); + Student s = manager.searchStudent(id); + System.out.println(s != null ? s : "Not found"); } diff --git a/src/main/java/dev/model/Student.java b/src/main/java/dev/model/Student.java index f0484f4..54cb5dd 100644 --- a/src/main/java/dev/model/Student.java +++ b/src/main/java/dev/model/Student.java @@ -40,31 +40,16 @@ public class Student { @Override public int hashCode() { - - // TODO: - // Return custom hash - - // Example: - // return id % 97; - - return 0; + return this.id % 97; } @Override public boolean equals(Object obj) { - // TODO: + if (obj == null || getClass() != obj.getClass()) return false; - // Step 1: - // Check null - - // Step 2: - // Convert obj to Student - - // Step 3: - // Compare IDs - - return false; + Student s = (Student) obj; + return s.id == this.id; } @Override diff --git a/src/main/java/dev/service/StudentManager.java b/src/main/java/dev/service/StudentManager.java index 403a1c6..6125090 100644 --- a/src/main/java/dev/service/StudentManager.java +++ b/src/main/java/dev/service/StudentManager.java @@ -11,33 +11,31 @@ public class StudentManager { 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 (id == s.getId()) + { + return s; + } + } return null; } public boolean removeStudent(int id) { - // TODO: - - // Find student - - // Remove student + for (Student s : students) + { + if (id == s.getId()) + { + students.remove(s); + return true; + } + } return false; } diff --git a/src/main/java/dev/thread/StudentLoader.java b/src/main/java/dev/thread/StudentLoader.java index ab47522..bcc9476 100644 --- a/src/main/java/dev/thread/StudentLoader.java +++ b/src/main/java/dev/thread/StudentLoader.java @@ -25,30 +25,17 @@ 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]); + Student student = new Student(id, name, major, gpa); + students.add(student); } - } public ArrayList getStudents() { diff --git a/src/main/java/dev/utils/FileManager.java b/src/main/java/dev/utils/FileManager.java index da7f6f5..075879c 100644 --- a/src/main/java/dev/utils/FileManager.java +++ b/src/main/java/dev/utils/FileManager.java @@ -18,9 +18,7 @@ public class FileManager { while ((line = reader.readLine()) != null) { - // TODO: - - // Add line to list + lines.add(line); }