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Java Java Objects Creating the MVP Counting Scrabble Tiles

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

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

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