Huffman Coding

This function provides the Huffman coding given a vector of probabilities. The probabilities can be any unsorted 1D matrix of numbers.

The following code was developed to find the Huffman code given a probability vector, not
necessarily sorted and not necessarily from 0 to 1 (for example, [5 6 6 7 15]).

The array of codes is updated at each iteration.

The resulting array of codes corresponds to the probability vector that was fed to the function.