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Java Java Objects (Retired) Creating the MVP For Each Loop

Posted by Martins Rokis
Martins Rokis
6,995 Points

help with exercise needed

hi, my solution is not working,as i understood i need to convert string to char array, loop through and count how many char are there and return int value what solution looks like? thanks

ScrabblePlayer.java 
public class ScrabblePlayer {
  private String mHand;

  public ScrabblePlayer() {
    mHand = "";
  }

  public String getHand() {
   return mHand;
  }

  public void addTile(char tile) {
    // Adds the tile to the hand of the player
    mHand += tile;
  }

  public boolean hasTile(char tile) {
   return mHand.indexOf(tile) > -1;
  }
  public int getTileCount(){
    int count=0;
    for(char i:mHand.toCharArray()){
      count+=1;

    }
    return count;
  }
}

1 Answer

andren
andren
28,558 Points
andren
andren
28,558 Points

You have misunderstood the task slightly, if the task was what you thought then your code would actually be correct. Though it would also be quite overkill, as you can just use the length method found on strings to figure out how many chars are in them.

Anyway what the task actually wants you to do is create a method that receives a char as a parameter, and then compares that char to the chars in the mHand string. It should then return a count of how many of the chars in mHand matches the char that was passed in to the method.

Doing so only requires you to slightly modify your code like this:

public class ScrabblePlayer {
  private String mHand;

  public ScrabblePlayer() {
    mHand = "";
  }

  public String getHand() {
   return mHand;
  }

  public void addTile(char tile) {
    // Adds the tile to the hand of the player
    mHand += tile;
  }

  public boolean hasTile(char tile) {
   return mHand.indexOf(tile) > -1;
  }
  public int getTileCount(char passedInChar){ // get a char as a parameter
    int count=0;
    for(char i:mHand.toCharArray()){
      if (passedInChar == i) { // Compare the passed in char to the chars in mHand
        count++;
      }

    }
    return count;
  }
}

I added comments to the code I added, with those additions you will be able to pass the challenge.

Martins Rokis
Martins Rokis
6,995 Points

thank you very much, it worked