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Java Java Data Structures - Retired Efficiency! Call Center Queue

J.D. Sandifer
J.D. Sandifer
18,813 Points

Part 3: Add CustomerSupportRep back to queue not working

My code seems to do what's asked, but doesn't work. No compile errors - just "Bummer! Try again."

Here's the code including the directions for this part:

CallCenter.java
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;

    while (mSupportReps.size() == 0) {
      playHoldMusic();
    }

    csr = mSupportReps.poll();
    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.....");
  }

}
CustomerSupportRep.java
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;
  }

}
Customer.java
public class Customer {
  private String mName;

  public Customer(String name) {
    mName = name;
  }

  public String getName() {
    return mName;
  }

}

1 Answer

J.D. Sandifer
J.D. Sandifer
18,813 Points

Check out the discussion here: https://teamtreehouse.com/forum/challenge-efficiency.

It looks like the test script for the challenge doesn't (or didn't at one point) accept all correct ways of doing this. Just change your while loop code to match a successful example from that discussion.

(Yes, I answered my own question...)