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..4158879
--- /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..a604e92 100644
--- a/src/main/java/dev/Main.java
+++ b/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;
@@ -37,28 +39,56 @@ public class Main {
// Split data into 3 parts
- List part1 = null;
+ int sp1;
+ switch (data.size() % 3) {
+ case 1: {
+ sp1 = (data.size()-1)/3;
+ break;
+ }
+ case 2: {
+ sp1 = (data.size()-2)/3;
+ break;
+ }
+ default: {
+ sp1 = data.size()/3;
+ break;
+ }
+ }
+ int sp2 = sp1 * 2;
- List part2 = null;
+ List part1 = data.subList(0, sp1);
- List part3 = null;
+ List part2 = data.subList(sp1, sp2);
+
+ List part3 = data.subList(sp2, data.size());
// TODO:
- StudentLoader t1 = null;
+ StudentLoader t1 = new StudentLoader(part1);
- StudentLoader t2 = null;
+ StudentLoader t2 = new StudentLoader(part2);
- StudentLoader t3 = null;
+ StudentLoader t3 = new StudentLoader(part3);
// TODO:
// start()
+ t3.start();
+ t2.start();
+ t1.start();
+
// join()
+ t3.join();
+ t2.join();
+ t1.join();
+
// merge results
+ manager.addStudents(t1.getStudents());
+ manager.addStudents(t2.getStudents());
+ manager.addStudents(t3.getStudents());
}
case 2 -> {
@@ -79,7 +109,12 @@ public class Main {
boolean removed = manager.removeStudent(id);
- System.out.println(removed);
+ String res = "The student with id: " + id;
+
+ if (removed) res += "is removed successfully. ";
+ else res += "is not found. ";
+
+ System.out.println(res);
}
diff --git a/src/main/java/dev/model/Student.java b/src/main/java/dev/model/Student.java
index f0484f4..d32046b 100644
--- a/src/main/java/dev/model/Student.java
+++ b/src/main/java/dev/model/Student.java
@@ -45,9 +45,7 @@ public class Student {
// Return custom hash
// Example:
- // return id % 97;
-
- return 0;
+ return id % 97;
}
@Override
@@ -64,7 +62,11 @@ public class Student {
// Step 3:
// Compare IDs
- return false;
+ if (obj == this) return true;
+ if (obj == null || obj.getClass() != getClass()) return false;
+
+ Student student = (Student) obj;
+ return student.getId() == id;
}
@Override
diff --git a/src/main/java/dev/service/StudentManager.java b/src/main/java/dev/service/StudentManager.java
index 403a1c6..0fe39ee 100644
--- a/src/main/java/dev/service/StudentManager.java
+++ b/src/main/java/dev/service/StudentManager.java
@@ -2,6 +2,7 @@ package dev.service;
import dev.model.Student;
+import java.sql.Struct;
import java.util.ArrayList;
@@ -18,6 +19,7 @@ public class StudentManager {
// Hint:
// addAll()
+ students.addAll(newStudents);
}
public Student searchStudent(int id) {
@@ -28,6 +30,12 @@ public class StudentManager {
// Compare IDs
+ for (Student student : students) {
+ if (student.getId() == id) {
+ return student;
+ }
+ }
+
return null;
}
@@ -39,6 +47,13 @@ public class StudentManager {
// Remove student
+ for (Student student : students) {
+ if (student.getId() == id) {
+ students.remove(student);
+ return true;
+ }
+ }
+
return false;
}
diff --git a/src/main/java/dev/thread/StudentLoader.java b/src/main/java/dev/thread/StudentLoader.java
index ab47522..6e363fc 100644
--- a/src/main/java/dev/thread/StudentLoader.java
+++ b/src/main/java/dev/thread/StudentLoader.java
@@ -47,6 +47,21 @@ public class StudentLoader extends Thread {
// TODO:
// add to students list
+ String[] data = line.split(",");
+
+ try {
+ int id = Integer.parseInt(data[0]);
+ String name = data[1];
+ String major = data[2];
+ double gpa = Double.parseDouble(data[3]);
+
+ Student student = new Student(id, name, major, gpa);
+
+ students.add(student);
+ }
+ catch (Exception e) {
+ //...
+ }
}
}
diff --git a/src/main/java/dev/utils/FileManager.java b/src/main/java/dev/utils/FileManager.java
index da7f6f5..be75f53 100644
--- a/src/main/java/dev/utils/FileManager.java
+++ b/src/main/java/dev/utils/FileManager.java
@@ -22,6 +22,8 @@ public class FileManager {
// Add line to list
+ lines.add(line);
+
}
reader.close();