HadiSharifi/WS-07-Multithreading-Basics-and-Hashing
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HadiSharifi
2026-05-26 09:16:20 +03:30
parent 83746b88f6
commit 392499a739
11 changed files with 108 additions and 78 deletions
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.idea/.gitignore
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+10
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@@ -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
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<?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
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<?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
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<?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
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<?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
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<?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
+17 -14
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@@ -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
+4 -20
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@@ -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 -20
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@@ -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
+7 -19
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@@ -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
+1 -5
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@@ -17,11 +17,7 @@ public class FileManager {
String line;
while ((line = reader.readLine()) != null) {
// TODO:
// Add line to list
lines.add(line);
}
reader.close();