LetterGenerator.java

package com.danielvaughan.wordgame;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

/**
 * Created by danielvaughan on 11/09/2014.
 */
public class LetterGenerator {

    private List<Character> characterList = new ArrayList<Character>();

    public LetterGenerator() {
        initList();
    }

    private void initList() {
        addLetters(new char[] {'K', 'J', 'X', 'Q', 'Z'}, 1);
        addLetters(new char[] {'B', 'C', 'M', 'P', 'F', 'H', 'V', 'W', 'Y', '*'}, 2);
        addLetters(new char[] {'G'}, 3);
        addLetters(new char[] {'L', 'S', 'U', 'D'}, 4);
        addLetters(new char[] {'N', 'R', 'T'}, 6);
        addLetters(new char[] {'O'}, 8);
        addLetters(new char[] {'A', 'I'}, 9);
        addLetters(new char[] {'E'}, 12);
    }

    private void addLetters(char[] letters, int num)
    {
        for (char letter : letters) {
            for (int i = 0; i < num; i++) {
                characterList.add(letter);
            }
        }
    }

    public Character nextLetter() {
        Random randomGenerator = new Random();
        int randomInt = randomGenerator.nextInt(100);
        return characterList.get(randomInt);
    }
}