public void Encode(int value, List <int> encoding)
{
if (!_leafDictionary.ContainsKey(value))
{
throw new ArgumentException("Invalid value in Encode");
}
HuffmanNode <int> nodeCur = _leafDictionary[value];
var reverseEncoding = new List <int>();
while (!nodeCur.IsRoot)
{
reverseEncoding.Add(nodeCur.Bit);
nodeCur = nodeCur.Parent;
}
reverseEncoding.Reverse();
encoding.AddRange(reverseEncoding);
}
public Huffman(Dictionary <int, int> counts)
{
var priorityQueue = new PriorityQueue <HuffmanNode <int> >();
valueCount = counts.Count;
foreach (int value in counts.Keys)
{
var node = new HuffmanNode <int>((double)counts[value] / valueCount, value);
priorityQueue.Add(node);
_leafDictionary[value] = node;
}
while (priorityQueue.Count > 1)
{
HuffmanNode <int> leftSon = priorityQueue.Pop();
HuffmanNode <int> rightSon = priorityQueue.Pop();
var parent = new HuffmanNode <int>(leftSon, rightSon);
priorityQueue.Add(parent);
}
_root = priorityQueue.Pop();
_root.IsZero = false;
}
