For Each loop help (Scrabble game). Not familiar with this for each loop, and I am not sure what to do

Question

ScrabblePlayer.java

public class ScrabblePlayer {
  private String mHand;
public int getTileCount(char ltr){
 int count = 0;
  for(char letter: mHand.toCharArray()){
    if(mHand.indexOf(letter) >= 0){
     count++; 
    }
  }
  return count;
}
  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;
  }
}

Answer 1 · 2016-02-25T20:34:11Z

February 25, 2016 8:34pm

Need a bit more info. Your code compiles fine. So what is it you feel you need to do? I'll try to guess, but if I guess wrong let me know.

If it's just understanding the for each loop, there are plenty of resources on the web. But in short, for-each loops are an easy way to traverse an array or collection. Here you are using it to look at each of the chars in the mHand String.

If it helps to get your head around what it's doing, your for-each loop could be converted to the other kind of for loop: <br> for (int i = 0; i < mHand.length(); i++) { if(mHand.charAt(i) == ltr){ count++; } } <br>

Perhaps you are wondering how to test your work. If so, you need to create a test program. Here's a brief one, to get you going.

public class ScrabbleTest {
   public static void main(String[] args) {
      ScrabblePlayer p = new ScrabblePlayer();
      p.addTile('T');
      p.addTile('X');
      System.out.println(p.getTileCount('T'));
   }
}

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Shane May

Shane May

For Each loop help (Scrabble game). Not familiar with this for each loop, and I am not sure what to do

1 Answer

jcorum

jcorum