[Manan] ADD:Ticket Reservation System using a Circular Linked List

Author: mananguptamg

TicketReservationSystem.java

@@ -0,0 +1,134 @@
+class TicketReservationSystem {
+    private class TicketNode {
+        int ticketId;
+        String customerName;
+        String movieName;
+        int seatNumber;
+        String bookingTime;
+        TicketNode next;
+
+        TicketNode(int ticketId, String customerName, String movieName, int seatNumber, String bookingTime) {
+            this.ticketId = ticketId;
+            this.customerName = customerName;
+            this.movieName = movieName;
+            this.seatNumber = seatNumber;
+            this.bookingTime = bookingTime;
+            this.next = null;
+        }
+    }
+
+    private TicketNode head = null;
+    private TicketNode tail = null;
+    private int totalTickets = 0;
+
+    public void addTicket(int ticketId, String customerName, String movieName, int seatNumber, String bookingTime) {
+        TicketNode newNode = new TicketNode(ticketId, customerName, movieName, seatNumber, bookingTime);
+        if (head == null) {
+            head = newNode;
+            tail = newNode;
+            newNode.next = head;
+        } else {
+            tail.next = newNode;
+            tail = newNode;
+            tail.next = head;
+        }
+        totalTickets++;
+    }
+
+    public void removeTicket(int ticketId) {
+        if (head == null) return;
+        if (head.ticketId == ticketId) {
+            if (head == tail) {
+                head = null;
+                tail = null;
+            } else {
+                head = head.next;
+                tail.next = head;
+            }
+            totalTickets--;
+            return;
+        }
+        TicketNode temp = head;
+        while (temp.next != head) {
+            if (temp.next.ticketId == ticketId) {
+                temp.next = temp.next.next;
+                if (temp.next == head) {
+                    tail = temp;
+                }
+                totalTickets--;
+                return;
+            }
+            temp = temp.next;
+        }
+    }
+
+    public void displayTickets() {
+        if (head == null) {
+            System.out.println("No tickets available.");
+            return;
+        }
+        TicketNode temp = head;
+        while (true) {
+            System.out.println("Ticket ID: " + temp.ticketId + ", Customer: " + temp.customerName + ", Movie: " + temp.movieName + ", Seat: " + temp.seatNumber + ", Time: " + temp.bookingTime);
+            temp = temp.next;
+            if (temp == head) break;
+        }
+    }
+
+    public void searchTicketByCustomer(String customerName) {
+        if (head == null) return;
+        TicketNode temp = head;
+        while (true) {
+            if (temp.customerName.equalsIgnoreCase(customerName)) {
+                System.out.println("Ticket Details - ID: " + temp.ticketId + ", Movie: " + temp.movieName + ", Seat: " + temp.seatNumber + ", Time: " + temp.bookingTime);
+            }
+            temp = temp.next;
+            if (temp == head) break;
+        }
+    }
+
+    public void searchTicketByMovie(String movieName) {
+        if (head == null) return;
+        TicketNode temp = head;
+        while (true) {
+            if (temp.movieName.equalsIgnoreCase(movieName)) {
+                System.out.println("Ticket Details - ID: " + temp.ticketId + ", Customer: " + temp.customerName + ", Seat: " + temp.seatNumber + ", Time: " + temp.bookingTime);
+            }
+            temp = temp.next;
+            if (temp == head) break;
+        }
+    }
+
+    public int getTotalTickets() {
+        return totalTickets;
+    }
+
+    public static void main(String[] args) {
+        TicketReservationSystem system = new TicketReservationSystem();
+        system.addTicket(1, "Aman", "PK", 12, "10:00 AM");
+        system.addTicket(2, "Samir", "3 Idiots", 15, "12:00 PM");
+        system.addTicket(3, "Arjun", "Barfi", 20, "2:00 PM");
+
+        System.out.println("Current Reservations:");
+        system.displayTickets();
+
+        System.out.println("Searching for tickets booked by Arjun");
+        system.searchTicketByCustomer("Arjun");
+
+        System.out.println("Searching for tickets for PK:");
+        system.searchTicketByMovie("PK");
+
+        System.out.println("Total Tickets Booked: " + system.getTotalTickets());
+    }
+}
+
+//SampleOutput
+//Current Reservations:
+//Ticket ID: 1, Customer: Aman, Movie: PK, Seat: 12, Time: 10:00 AM
+//Ticket ID: 2, Customer: Samir, Movie: 3 Idiots, Seat: 15, Time: 12:00 PM
+//Ticket ID: 3, Customer: Arjun, Movie: Barfi, Seat: 20, Time: 2:00 PM
+//Searching for tickets booked by Arjun
+//Ticket Details - ID: 3, Movie: Barfi, Seat: 20, Time: 2:00 PM
+//Searching for tickets for PK:
+//Ticket Details - ID: 1, Customer: Aman, Seat: 12, Time: 10:00 AM
+//Total Tickets Booked: 3