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Java Java Objects (Retired) Creating the MVP For Each Loop

Steve DeYoung
Steve DeYoung
1,313 Points
Posted by Steve DeYoung
Steve DeYoung
1,313 Points

Question about getTileCount method

This is what I have so far but I'm really stuck.. Any help would be appreciated..

public int getTileCount(char tile) { int tileCount = 0; for(char count : mHand.toCharArray()){ tileCount += count; } return tileCount; }

ScrabblePlayer.java 
public class ScrabblePlayer {
  private String mHand;

  public ScrabblePlayer() {
    mHand = "";
  }

  public String getHand() {
   return mHand;
  }

  public void addTile(char tile) {
    // Adds the tile to the hand of the player
    mHand += tile;
  }

  public boolean hasTile(char tile) {
   return mHand.indexOf(tile) > -1;
  }
  public int getTileCount(char tile) {
   int tileCount = 0;
   for(char count : mHand.toCharArray()){
    tileCount += count;
   }
   return tileCount;
}

}

4 Answers

jcorum
jcorum
71,830 Points

Here you go:

   public int getTileCount(char ltr){
      int mCount = 0;
      int i = 0;  //loop counter
      for(char letter: mHand.toCharArray()){
      //for (int i = 0; i < mHand.length(); i++) {
         if(mHand.charAt(i) == ltr){
            mCount++; 
         }
         i++; 
      }
      return mCount;
   }

Since you need subscript notation to access the elements in the array, you would need to create a loop counter variable, use it, and increment it each time through the loop.

jcorum
jcorum
71,830 Points
jcorum
jcorum
71,830 Points

Steve, here's the function. The key thing here is that you have to compare the letter/tile passed into the function with each letter/tile in mHand. 

   public int getTileCount(char ltr){
      int mCount = 0;

      for (int i = 0; i < mHand.length(); i++) {
         if(mHand.charAt(i) == ltr){
            mCount++; 
         }
      }
      return mCount;
   }

But just in case, here's the whole thing:

import java.util.*;

public class ScrabblePlayer {
   private String mHand;

   public int getTileCount(char ltr){
      int mCount = 0;

      for (int i = 0; i < mHand.length(); i++) {
         if(mHand.charAt(i) == ltr){
            mCount++; 
         }
      }
      return mCount;
   }

   public ScrabblePlayer() {
      mHand = "";
   }

   public String getHand() {
      return mHand;
   }

   public void addTile(char tile) {
      // Adds the tile to the hand of the player
      mHand += tile;
   }

   public boolean hasTile(char tile) {
      return mHand.indexOf(tile) > -1;
   }

   List<String> list = new ArrayList<String>();

}
Steve DeYoung
Steve DeYoung
1,313 Points
Steve DeYoung
Steve DeYoung
1,313 Points

Thanks so much! Is there a way to write this with a for-each loop?

Steve DeYoung
Steve DeYoung
1,313 Points
Steve DeYoung
Steve DeYoung
1,313 Points

Wow thanks so much!!! This site sure is awesome!