Lolwah Alroomi and Abdullah Mishari

src/students.ts

@@ -71,7 +71,7 @@ const students: Student[] = [
  */
 function getStudentName(student: Student): string {
   // write your code here...
-
+  return student.name;
   return ""; // replace empty string with what you see is fit
 }
 
@@ -86,7 +86,7 @@ function getStudentName(student: Student): string {
  */
 function getCourse(student: Student, courseIndex: number): string {
   // write your code here...
-
+  return student.courses[courseIndex];
   return ""; // replace empty string with what you see is fit
 }
 
@@ -103,7 +103,7 @@ function getCourse(student: Student, courseIndex: number): string {
  */
 function addCourseToStudent(student: Student, course: string): Student {
   // write your code here...
-
+  student.courses.push(course);
   return student;
 }
 
@@ -116,6 +116,7 @@ function addCourseToStudent(student: Student, course: string): Student {
  */
 function countCourses(student: Student): number {
   // write your code here...
+  return student.courses.length;
 
   return -1; // replace -1 with what you see is fit
 }
@@ -133,6 +134,10 @@ function countCourses(student: Student): number {
  */
 function removeCourseFromStudent(student: Student, course: string): Student {
   // write your code here...
+  const index = student.courses.indexOf(course);
+  if (index !== -1) {
+    student.courses.splice(index, 2);
+  }
 
   return student;
 }
@@ -156,6 +161,7 @@ function findStudentById(
 ): Student | undefined {
   // write your code here...
 
+  return students.find((student) => student.id === studentId);
   return undefined; // replace undefined with what you see is fit
 }