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Start your free trialSahil Dhawan
1,536 Pointsdid you remember to call the assisit method ?
cant pass the test case . but it is working fine in the preview !
import java.util.ArrayDeque;
import java.util.Queue;
public class CallCenter {
Queue<CustomerSupportRep> mSupportReps;
public CallCenter(Queue<CustomerSupportRep> queue) {
mSupportReps = queue;
}
public void acceptCustomer(Customer customer) {
CustomerSupportRep csr;
/********************************************
* TODO (1)
* Wait until there is an available rep in the queue.
* While there is not one available, playHoldMusic
* HINT: That while assignmentcheck loop syntax we used to
* read files seems pretty similar
********************************************
*/
while(mSupportReps == null)
{
playHoldMusic();
}
/********************************************
* TODO (2)
* After we have assigned the rep, call the
* assist method and pass in the customer
********************************************
*/
csr = new CustomerSupportRep("Treehouse");
csr.assist(customer);
/********************************************
* TODO (3)
* Since the customer support rep is done with
* assisting, put them back into the queue.
********************************************
*/
mSupportReps.add(csr);
}
public void playHoldMusic() {
System.out.println("Smooooooth Operator.....");
}
}
import java.util.List;
import java.util.ArrayList;
public class CustomerSupportRep {
private String mName;
private List<Customer> mAssistedCustomers;
public CustomerSupportRep(String name) {
mName = name;
mAssistedCustomers = new ArrayList<Customer>();
}
public void assist(Customer customer) {
System.out.printf("Hello %s, my name is %s, how can I assist you.%n",
customer.getName(),
mName);
System.out.println("...");
System.out.println("Is there anything else I can help you with?");
mAssistedCustomers.add(customer);
}
public List<Customer> getAssistedCustomers() {
return mAssistedCustomers;
}
}
public class Customer {
private String mName;
public Customer(String name) {
mName = name;
}
public String getName() {
return mName;
}
}
1 Answer
Steve Hunter
57,712 PointsHi Sahil,
Your error is how you've initialized the csr
variable and in your while loop too, I think.
You play hold music when there's no mSupportReps
in the queue. You can look at the queue without modifying it with the peek()
method. So, the while
loop looks at the queue and while the peek
returns null
, you play the hold music:
while(mSupportReps.peek() == null){
playHoldMusic();
}
OK so far? The csr
instance comes from the queue. When the above code doesn't return null
then there's an instance of CustomerServiceRep
in there. You can use the poll()
method of the queue to get that instance out of the queue and into your csr
variable, without creating a new one yourself:
csr = mSupportReps.poll();
I think the rest of your code is fine - I just noticed those two points.
I hope that helps.
Steve.