Question

Suppose there is only one customer service available in SAMBA Bank in Thursday morning, in every 4 minutes a new customer arrives at the end of waiting line, each customer will need 7 minutes for the service.

Write a program to print out the information after the first 60 minutes

The time of arriving for each customer

The time of leaving for each customer

How many customers are in the line?

Who is the current serving customer?

please by Java NetBeans - with easy and explain everything !!!!

Answer 1

Here in the code i'm simulating the bank service for the 60 minutes. and for each minutes I am printing the required details.

Also I have make it as simple as possible and added comment at proper places. However if you feel any problem please feel free to ask.

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Explanation

1. We make a class Samba

2. For adding a new customer, we are using Queue here

3. Now we initialized all data fields in constructor

4. for simulation, we make a method start_simulation() , which is looping from 0 to 60. here each iteration can be described as a minute.

5.After each minute, we are printing the require data on console

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Code :

import java.util.*;

//create a class SAMBA
class SAMBA
{
private Queue<String> cust_queue;
private int count ;
  
//default constructor to initilize all data variables
public SAMBA()
{
cust_queue = new LinkedList<String>();
count = 0;
}
  

//start the simulation
public void start_simulation()
{

for(int i=0; i<60; i++)
{
//add a new customer in queue after each 4 minutes
if( i % 4 == 0)
{
count++;
cust_queue.add("C"+count);
System.out.println("Customer Arrived At: "+ i);

}

//deque a Customer after each 7 minutes
if(i % 7 == 0 && i != 0)
{
cust_queue.remove();
System.out.println("Customer Leaved At: "+ i);
}

//number of customers in line
System.out.println("Number of Customers in line: "+ cust_queue.size());


//prnt the current serving customer
System.out.println("Current Serving Customer: "+cust_queue.peek() + "\n");
}
}
  
}

public class Main
{
   public static void main(String[] args) {
  
   //create the object of SAMBA class
   SAMBA s = new SAMBA();
     
   //call the start_simulation which runs for 60 minutes
   s.start_simulation();
   }
}

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Output :