complete all parts

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

@@ -11,33 +11,31 @@ 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 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;
     }