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

David Debreceni
David Debreceni
1,853 Points
Posted by David Debreceni
David Debreceni
1,853 Points

Creating the MVP Challenge Question

"Can you please add a method called getTileCount that uses the for each loop you just leanred to loop through the characters and increment a counter if it matches? Return the count, please, thanks!" Following this, I cannot figure out how to write that if loop so that it doesn't find the character on every single for loop. Can anyone point me in the right direction? Thank you ahead of time.

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 count = 0;
    for(char letter: mHand.toCharArray()) {        
      if(mHand.indexOf(letter) >= 0) {
        count++;
      }
    }
    return count;
  }
}

1 Answer

Craig Dennis
STAFF
Craig Dennis
Treehouse Teacher
Craig Dennis
Craig Dennis
Treehouse Teacher

What if you checked if tile was equal to letter in that loop?

David Debreceni
David Debreceni
1,853 Points
David Debreceni
David Debreceni
1,853 Points

Thank you for that, I was completely over thinking it, but how does that variable letter work? Does the for loop re-write the value of letter every iteration?

Craig Dennis
Craig Dennis
Treehouse Teacher
Craig Dennis
Craig Dennis
Treehouse Teacher

Yes exactly that! That is a for-each loop. So for each letter in the char array, it will run that code block, and letter will be set for that current loop.

David Debreceni
David Debreceni
1,853 Points
David Debreceni
David Debreceni
1,853 Points

Oh okay, I think I was getting hung up on that part haha. Thanks!