/**
* create a Huffman Tree from a frequency table (which must be an Integer Array of exactly 255
* elements)
*
* @param frequencyTable
*/
public HuffmanTree(int[] frequencyTable) {
build(frequencyTable);
}
/**
* create a Huffman Tree from a given source. Counts the frequency of each byte on the source and
* constructs the tree accordingly
*
* @param source an arbitrary sequence of bytes.
*/
public HuffmanTree(byte[] source) {
build(constructTable(source));
}