How would I implement this? I would appreciate any help on this. public class Ba

ID: 3575530 • Letter: H

Question

How would I implement this? I would appreciate any help on this.

public class BattleDeck {
private ArrayList arr;

/**

   * Standard constructor. It needs to initialize the ArrayList object
   * and do any other setup that you deem necessary for this class object.
   */
   public BattleDeck() {
       throw new RuntimeException("You must implement this!");
   }

   /**
   * Adds an item to the BattleDeck in a very special way.
   * The structure is double-ended; this means that the "side" to which
   * objects are added alternates with every other item added. If things
   * are added in the order 1,2,3,4,5 then the BattleDeck would grow as
   * the following:

   *    1

   *    1,2

   *    3,1,2

   *    3,1,2,4

   *    5,3,1,2,4

   * It is your job to determine a good way to ensure this alternation.
   *
   * @param newItem refers to a creature to be added to this BattleDeck
   */
   public void add(T newItem) {
       throw new RuntimeException("You must implement this!");
   }

   /**
   * Goes through each item in the BattleDeck and deducts the specified
   * loss value from every creature it contains.
   *
   * @param lossValue the value to deduct from the strength level
   */
   public void weakenCreatures(int lossValue) {
       throw new RuntimeException("You must implement this!");
   }


   /**
   * Removes any creature currently in the battle deck who have
   * no more strength left.
   */
   public void sweepDeck() {
       throw new RuntimeException("You must implement this!");
   }

Explanation / Answer

Hi, Please find my implementation.

Please let me know in case of any issue.

import java.util.ArrayList;

public class BattleDeck<T extends Battleable> {
private ArrayList<T> arr;

   /**
   * Standard constructor. It needs to initialize the ArrayList object
   * and do any other setup that you deem necessary for this class object.
   */
   public BattleDeck() {
       arr = new ArrayList<T>();
   }

* 1

* 1,2

* 3,1,2

* 3,1,2,4

* 5,3,1,2,4

   * It is your job to determine a good way to ensure this alternation.
   *
   * @param newItem refers to a creature to be added to this BattleDeck
   */
   public void add(T newItem) {
       if(arr.size()%2 == 0){ // if size is even then add at begining
           arr.add(0, newItem);
       }else{ // add at end
           arr.add(newItem);
       }
   }

   /**
   * Goes through each item in the BattleDeck and deducts the specified
   * loss value from every creature it contains.
   *
   * @param lossValue the value to deduct from the strength level
   */
   public void weakenCreatures(int lossValue) {
       for(int i=0; i<arr.size(); i++){
           T item = arr.get(i);
           int oldStrength = item.getStrength();
           item.setStrength(oldStrength - lossValue);
           arr.set(i, item);
       }
   }

   /**
   * Removes any creature currently in the battle deck who have
   * no more strength left.
   */
   public void sweepDeck() {
       ArrayList<T> newList = new ArrayList<T>();
       for(int i=0; i<arr.size(); i++){
           if(arr.get(i).getStrength() > 0){
               newList.add(arr.get(i));
           }
       }

       arr = newList;
   }

}

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How would I implement this? I would appreciate any help on this. public class Ba

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