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?

in java

Answer 1

JAVA CODE:

import java.util.*;
import java.lang.*;
import java.io.*;

class Chegg
{
   public static void main (String[] args) throws java.lang.Exception
   {
//inititalize customer_arrival to 0 and custom to 0
       int customer_arrival = 1;
       int customer_left = 0;
       System.out.println("Customer "+(1)+" arrived at time: "+0+" mins");
       //declare a loop and at every 4 minutes increment the count of customer_arrival
       // at every seven minutes interval increment the count of customer_left
       for(int i=1;i<=60;i++){
       if(i%4==0){
       System.out.println("Customer "+(i/4 + 1)+" arrived at time: "+i+" mins");
       customer_arrival++;
       }
       if(i%7==0){
       System.out.println("Customer "+(i/7 )+" left at time: "+i+" mins");
       customer_left++;
       }
       }
       // Number of customers in line will be customer_arrival - customer_left -1 because one
       //customer is getting served
       System.out.println("\nNumber of customers in line : "+ (customer_arrival-customer_left-1));
       System.out.println("Current serving customer is :"+ (customer_left+1));
      
   }
}

OUTPUT:

Code screenshot:

Please upvote if this answer helped you. If you have any doubts you can ask them in the comment section.