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Massimo Scola
Courses Plus Student 632 PointsgetCountOfLetters
public int getCountOfLetter(char letter) { int length = tiles.length(); int count = 0; for (int i = 0; i <= length; i++) { if (tiles.charAt(i) == letter) { count = count + 1; } }
What's wrong with this code? It counts the number of character.
public class ScrabblePlayer {
// A String representing all of the tiles that this player has
private String tiles;
public ScrabblePlayer() {
tiles = "";
}
public int getCountOfLetter(char letter) {
int length = tiles.length();
int count = 0;
for (int i = 0; i <= length; i++) {
if (tiles.charAt(i) == letter) {
count = count + 1;
}
}
return count;
}
public String getTiles() {
return tiles;
}
public void addTile(char tile) {
tiles += tile;
}
public boolean hasTile(char tile) {
return tiles.indexOf(tile) != -1;
}
}
// 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

Zack Massingill
868 PointsI think you're getting an "off by one" error in your indexing. try removing the "<=" between i and length, and replace it with just "<".

Massimo Scola
Courses Plus Student 632 PointsI eventually realised what was wrong .... the author wants us to write a FOR EACH loop ... why can't he state this in his question?
I wonder if "Team Treehouse" has any quality control in place.