// Returns true if the letter string starts with the letter.
public bool StartsWith(Letter letter)
{
if (letters.Count >= 1)
return letters[0] == letter;
return false;
}
// Inserts a letter into the letter string.
public void Insert(int index, Letter letter)
{
letters.Insert(index, letter);
}
// Adds a letter to the letter string.
public void Add(Letter letter)
{
letters.Add(letter);
}
// Returns true if the letter string ends with the letter.
public bool EndsWith(Letter letter)
{
if (letters.Count >= 1)
return letters[letters.Count - 1] == letter;
return false;
}
// Constructs a copy of the letter string.
public LetterString(Letter letter)
{
this.letters = new List<Letter>();
this.letters.Add(letter);
}