Assalam Alaikum
Could any one help pleeeeeeas
This is a JAVA code written using Array data structure !
I have to convert it using a binary tree data structure !
I really face difficulty in doing that !!!
I mean, I don't know where to start in the process :""((
especially I'm a beginner in JAVA !
I will be really appreciate you quick help :"))
:
This is the complete code :
import java.util.Scanner;
class ReservationF
{
Scanner input = new Scanner(System.in);
private static int index=11;
private static String resRom[] = new String[index];
private static int roomNum;
private static int rNo;
private static String A="Available";
private static String R="Reserved";
private static int rNo1;
private static int ask;
private static int enter;
public static void main(String args[])
{
Scanner input = new Scanner(System.in);
System.out.print( "\t**************************************************\n\tWelcome To University Housing Reservation System \n\t\t\t\t ( UHRS )\n\t**************************************************");
System.out.print( "\t\n\nEnter your choice:\n\t 1 : Administrator\n\t 2 : User\n\t" );
int AU = input.nextInt();
if( AU == 1 )
{
System.out.print("\n\t Welcome Administrator :) \n");
System.out.print("What do you want to do ?");
System.out.print("\n\nAdmin Menu \n [1] - Add a Room \n [2] - Remove a Room \n [3] - Exit");
System.out.print("\n\n\nEnter Admin Menu: ");
int AdminMenu = input.nextInt();
switch(AdminMenu)
{
case 1:
System.out.print("Number of Rooms existing now is\t");
System.out.println(index);
System.out.print("Make the number of Rooms to be : ");
int AddNo = input.nextInt();
index = AddNo;
System.out.print("The Number of Rooms become\t");
System.out.println(index);
break;
case 2:
System.out.print("\nEnter the Room Number you want to be deleted :");
int DelNo = input.nextInt();
resRom[DelNo+1] = resRom[DelNo];
break;
case 3:
System.exit(0);
break;
}
} //end of Admin
if ( AU == 2 )
{
System.out.print("\t\n Welcome User :) ");
System.out.print("STEP [1]:\n Please Enter Your personal information to let us contact you when the reservation is approved.\n");
System.out.print("Enter your First Name:");
String Fname = input.next();
System.out.print("Enter your MIDDLE Name:\t");
String Mname = input.next();
System.out.print("Enter your Last Name:");
String Lname = input.next();
System.out.print("Enter your ID number:\t");
int idNo = input.nextInt();
System.out.print("Phone:");
int phone = input.nextInt();
System.out.print("Enter your Email Address:\t");
String Email = input.next();
System.out.println("-------------------------------------------------------------------------------------------------- ");
System.out.println("STEP [2]:\n Reservation.\n");
System.out.println("\nReservation STEPS \n [1] - Reserve a room \n [2] - Total Cost \n [3] - Confirm/Cancel Reservation \n [4] - Exit/Do another Reservation");
roomDis();
menu();
}
}
static void roomDis()
{
System.out.println("\nROOM #. STATUS\n\n");
roomNum=1;
for(int i=1;i<index;i++)
{
resRom[i]=A;
System.out.println(" " +roomNum + "\t " +resRom[i]);
roomNum++;
}
}//end roomDis
static void roomDisOrg()
{
System.out.println("\nROOM #. STATUS\n\n");
roomNum=1;
for(int i=1;i<index;i++)
{
System.out.println(" " +roomNum + "\t " +resRom[i]);
roomNum++;
}
}//end roomDisOrg
static void menu()
{
System.out.println("------------------------------------------[STEP 1] - Reserve a room---------------------------------- ");
int Room = step1();
System.out.println("------------------------------------------[STEP 2] - Cost-------------------------------------------- ");
int S = extraS();
int RoomReserved = step2(Room,S);
System.out.println("------------------------------------------[STEP 3] - Confirm/Cancel Reservation---------------------- ");
step3(RoomReserved);
System.out.println("------------------------------------------[STEP 4] - Exit/Do another Reservation--------------------- ");
step4();
}////end menu
//================================
static int step1()
{ Scanner input = new Scanner(System.in);
System.out.print("Enter the room #: ");
rNo = input.nextInt();
if(resRom[rNo]==A)
{
resRom[rNo]=R;
roomDisOrg();
System.out.println("\n\nRoom number " + rNo + " reserved!");
}//end if
else
{
System.out.println("\n");
roomDisOrg();
System.out.println("\n\nRoom number " + rNo + " already reserved!");
menu();
}//end else
return rNo ;
}
//================================
static int step2(int R, int S)
{
int r= R;
int TotalCost = 0;
if(R >=1 && R<5)
{
System.out.printf("\n Room %d cost 800 SR\n",r);
TotalCost = 800 + S ;
System.out.printf("\n Total Cost %d SR\n", TotalCost);
}
else
{
System.out.printf("\n Room %d cost 500 SR\n",r);
TotalCost = 500 + S ;
System.out.printf("\n Total Cost %d SR\n", TotalCost);
}
return r;
}
//================================
static void step3(int RR)
{ Scanner input = new Scanner(System.in);
int rNo1=RR;
System.out.print("\n[1]-Cancel/[2]-Confirm : ");
ask = input.nextInt();
if(ask==1)
{
if(resRom[rNo1]==R)
{
System.out.println("\n");
resRom[rNo1] = A;
roomDisOrg();
System.out.println("\n\nRoom number " + rNo1 + " is now " + A);
}//end if
else
{
System.out.println("\n");
roomDisOrg();
System.out.println("\n\nRoom number " + rNo1 + " is already " + A);
}//end else
}//end if
else if(ask==2)
{ System.out.println("\n");
roomDisOrg();
}//end else if
else
{
System.out.println("Invalid Input...\n");
}//end else
}
//================================
static void step4()
{
Scanner input = new Scanner(System.in);
System.out.println(" Enter 1 to Do another reservation and 2 to Exit ");
enter = input.nextInt();
switch(enter)
{
case 1:
menu();
break;
case 2:
System.exit(0);
break;
default :
break;
}
}
//================================
static int extraS()
{
Scanner input = new Scanner(System.in);
System.out.print("\n\t-------------------- UHRS Special Offers --------------------\n");
System.out.print("\t| First Offer [1] |\n1- Food\n\t 2- Landury\n\t 3- Clean\n\t 4- Medical\n\t 5- Maintenance\n\t");
System.out.print("Cost 600SR !\n");
System.out.print("\t| Second Offer [2] |\n1- Food\n\t 2- Landury\n\t 3- Clean\n\t");
System.out.print("Cost 300SR !\n");
System.out.print("\t| Third Offer [3] |\nONLY FOOD SERVICE !\n\t");
System.out.print("Cost 100SR !\n");
System.out.print("\t| [3] DO NOT WANT EXTRA SERVICES\n");
System.out.print("Enter the Offer Number you choose :");
int ONo = input.nextInt();
int v =0;
switch(ONo)
{
case 1:
v = 600;
break;
case 2:
v = 300;
break;
case 3:
v = 100;
break;
case 4:
v =0 ;
break;
}
return v ;
}//end extraS
}//end class Reservation