private string GetString(HuffmanNode root, StringBuilder sb, int len)
{
if (root == null || len < 0 || len > sb.Length)
{
return("");
}
if (root.left == null && root.right == null)
{
sb.Remove(0, len);
return(root.letter.ToString());
}
if (sb[len] == '0')
{
return(GetString(root.left, sb, len + 1));
}
if (sb[len] == '1')
{
return(GetString(root.right, sb, len + 1));
}
return("");
}
public HuffmanNode()
{
this.left = null;
this.right = null;
}
