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Java Java Objects Creating the MVP Counting Scrabble Tiles

Shirit Dori
Shirit Dori
791 Points

I get the error: " Make sure you check if the char from tiles is == to the letter argument passed into the method.

I cannot understand the problem.....

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;
  }
  public int getCountOfLetter(char letter){
    int count=0;
    for(char tav:tiles.toCharArray()){
      if(tiles.indexOf(tav)!=-1){
        count++;}
    }
    return count;
  }
}
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');
  }
}

1 Answer

Leandro Botella Penalva
Leandro Botella Penalva
17,618 Points

Hi Shirit,

Your are supposed to count how many times the character "letter" appears in the "tiles" variable.

However in your code, you are comparing the tiles characters to itself.

You just need in your loop to check if the letter is equal to the character loop tav variable like this:

public int getCountOfLetter(char letter){
    int count=0;
    for(char tav:tiles.toCharArray()){
      if(letter == tav){
        count++;}
    }
    return count;
  }
Shirit Dori
Shirit Dori
791 Points

Thank you very much Leandro.It works :-)