Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Java Java Objects Creating the MVP Counting Scrabble Tiles

Arne Stops
Arne Stops
642 Points
Posted by Arne Stops
Arne Stops
642 Points

I´m stuck...

Don´t understand how to initialize the for loop the right way. If done like in the video it won´t work, because the char letter is already defined prior in the method. How to tell the machine this "for each tile in tiles..."?

ScrabblePlayer.java 
public class ScrabblePlayer {
  // A String representing all of the tiles that this player has
  private String tiles;

  public ScrabblePlayer() {
    tiles = "";
  }

  public String getTiles() {
    return tiles;
  }

  public void addTile(char tile) {
    tiles += tile;
  }

  public boolean hasTile(char tile) {
    return tiles.indexOf(tile) != -1;
  }
  private int tileCount = '0'; 

  public int getCountOfLetter(char letter) {
   for (char letter : tiles.toCharArray()) {
   if (letter.indexOf(tiles)) {
   ++tileCount;
   }
   }
    return tileCount;
  }
}
Example.java 
// This code is here for example purposes only
public class Example {

  public static void main(String[] args) {
    ScrabblePlayer player1 = new ScrabblePlayer();
    player1.addTile('d');
    player1.addTile('d');
    player1.addTile('p');
    player1.addTile('e');
    player1.addTile('l');
    player1.addTile('u');

    ScrabblePlayer player2 = new ScrabblePlayer();
    player2.addTile('z');
    player2.addTile('z');
    player2.addTile('y');
    player2.addTile('f');
    player2.addTile('u');
    player2.addTile('z');

    int count = 0;
    // This would set count to 1 because player1 has 1 'p' tile in her collection of tiles
    count = player1.getCountOfLetter('p');
    // This would set count to 2 because player1 has 2 'd'' tiles in her collection of tiles
    count = player1.getCountOfLetter('d');
    // This would set 0, because there isn't an 'a' tile in player1's tiles
    count = player1.getCountOfLetter('a');

    // This will return 3 because player2 has 3 'z' tiles in his collection of tiles
    count = player2.getCountOfLetter('z');
    // This will return 1 because player2 has 1 'f' tiles in his collection of tiles
    count = player2.getCountOfLetter('f');
  }
}

2 Answers

Umesh Ravji
Umesh Ravji
42,386 Points
Umesh Ravji
Umesh Ravji
42,386 Points

Hi Arne, just a few minor issues.

  public int getCountOfLetter(char letter) {
    int tileCount = 0;  // move this to here, and make sure that it's an integer (no quotes)
    for (char tile : tiles.toCharArray()) { // change the variable to anything but letter, tile sounds good :)
      if (tile == letter) {  // you can compare two characters for equality with double equals
        ++tileCount;  // would normally be written as tileCount++, but not required to change
      }
    }
    return tileCount;
  }
Arne Stops
Arne Stops
642 Points
Arne Stops
Arne Stops
642 Points

Great! Thanks for your fast reply...got it now!