khulud saleh

src/main/kotlin/Main.kt

@@ -1,6 +1,110 @@
-fun main(args: Array<String>) {
+fun main() {
+    println("=======================================================================================")
+    val sub = Course("Arabic")
+    sub.number_of_lectures = 5
+    val professor1 = Professor("Umar", "Alblawi", "0555555555")
+    if (sub.assignProfessor(professor1))
+    println("professor added successfully")
+    professor1.courses.add("Arabic")
+    if (sub.students.add(Student("Shoug", "Saleh")))
+    println("added the student successfully")
+    println("size ${sub.students.size}")
+    println("About the course:${sub.courseInfo()}")
+    println("=======================================================================================")
+    val sub1 = Course("English")
+    sub1.number_of_lectures = 15
+    val professor2 = Professor("Mohammed", "Hussain", "0546464646")
+    if (sub1.assignProfessor(professor2))
+        println("professor added successfully")
+    if (sub1.assignProfessor(professor2))
+        println("professor added successfully")
+    if (sub1.students.add(Student("Nujud", "Saleh")))
+        println("added the student successfully")
+    if (sub1.students.add(Student("Nora", "Albqmi")))
+        println("added the student successfully")
+    println("Professor name: ${sub1.professorName()}")
+    println("About the course:${sub1.courseInfo()}")
+}
 
-    // write your code here
+class Course(var courseName: String) {
+    var number_of_lectures: Int = 0
+        set(value) {
+         if (value > 0) field = value else println("Enter a valid number")
+        }
+    var students = mutableListOf<Student>()
+    var professor: Professor = Professor()
+    var flag = false
 
+    fun numberOfStudents(): Int {
+        return students.size
+    }
 
+    fun assignProfessor(p: Professor): Boolean {
+        return if (!flag && p.firstName != professor.firstName) {
+            this.professor = p
+            this.professor.courses.add(this.courseName)
+            this.flag = true
+            true
+        } else {
+            println("Can't assign the professor ${p.fullName()}, there is Professor ${this.professor.fullName()}!")
+            false        }
+    }
+
+    fun professorName(): String {
+        return this.professor.fullName()
+    }
+
+    fun enroll(s: Student): Boolean {
+        return if (this.students.size <= 20 && !this.students.contains(s)) {
+            this.students.add(s)
+            s.courses.add(this.courseName)
+            true
+        } else {
+            println("Student can’t be enrolled")
+            false
+        }
+    }
+
+    fun courseInfo(): String {
+ return "Name of course: ${this.courseName}, Number of lectures: ${this.number_of_lectures}, Name of professor: " +
+"${professor.fullName()} \n,Number of the students: ${numberOfStudents()},Name of students:${printStudentList()}"
+    }
+
+    fun printStudentList(): String {
+        var nameOfStu = ""
+        for (i in 0 until students.size - 1) {
+            nameOfStu += "${i + 1}-${students[i].fullName()} ,"
+        }
+        nameOfStu += "${students.size}-${students[students.size - 1].fullName()}"
+        return nameOfStu
+    }
+}
+
+class Professor() {
+    var firstName: String = ""
+    var lastName: String = ""
+    var telephone = ""
+        set(value) {
+            if (value.length == 10) field = value else println("Enter a valid number")
+        }
+    var courses = mutableListOf<String>()
+
+    constructor(firstName: String, lastName: String, telephone: String) : this() {
+        this.firstName = firstName
+        this.lastName = lastName
+        this.telephone = telephone
+    }
+
+    fun fullName(): String {
+        return "${this.firstName} ${this.lastName}"
+    }
+
+}
+
+class Student(var firstName: String, var lastName: String) {
+    var courses = mutableListOf<String>()
+
+    fun fullName(): String {
+        return "${this.firstName} ${this.lastName}"
+    }
 }