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Java Java Objects Creating the MVP Counting Scrabble Tiles

Andrei Oprescu
Andrei Oprescu
9,547 Points
Posted by Andrei Oprescu
Andrei Oprescu
9,547 Points

This question confuses me

I am currently given this question:

Now in your new method, have it return a number representing the count of tiles that match the letter that was passed in to the method. Make sure to check Example.java for some example uses.

And now I wrote this code:

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 countOfTiles = 0; countOfTiles = tiles.indexOf(letter); return countOfTiles; }

}

But surprisingly there is a bummer:

Bummer! Please use an enhanced for loop to cycle through each of the tiles found in tiles.toCharArray

Can you tell me what it is trying to say and what I should fix?

Thank you!

Andrei

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 countOfTiles = 0;
  countOfTiles = tiles.indexOf(letter);
  return countOfTiles;
 }

}

3 Answers

John Stratton
John Stratton
18,726 Points
John Stratton
John Stratton
18,726 Points

Try looping through each of the tiles. For each tile that matches the letter, increment countOfTiles.

public int getCountOfLetter(char letter) {
  int countOfTiles = 0;
  // for each tile in tiles
   // if letter matches tile
   // increment countOfTiles
  return countOfTiles;
Andrei Oprescu
Andrei Oprescu
9,547 Points
Andrei Oprescu
Andrei Oprescu
9,547 Points

Thank you for your response.

Now I have this code but it still gives some errors:

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 countOfTiles = 0; for (int tiles : letter.toCharArray()) { if (tiles.IndexOf(letter) != -1) { countOfTiles++; } } return countOfTiles; }

}

Can you tell me what I did wrong?

John Stratton
John Stratton
18,726 Points
John Stratton
John Stratton
18,726 Points

This is what you currently have:

for (int tiles : letter.toCharArray()) {  // for each int tiles in letter
    if (tiles.IndexOf(letter) != -1) { // if char letter is found in int tiles
        countOfTiles++; // increment countOfTiles
    }
}

What you should have:

// for each char tile in tiles (remember tiles is already a String)
   // if letter = tile
      // increment countOfTiles

Hope this helps!