* Removes overuse of lambdas, improves readability and processing time when it finds bitstring to print out.
Removes overuse of lambdas, uses dictionary instead. This improves readability and processing time when it finds the bitstring to print out.
* Update huffman.py
* Added lempel-ziv compression algorithm implementation
* Added lempel-ziv decompression algorithm implementation
* Reformatted lempel-ziv compress/decompress files using black
* Added type hints and some other modifications (Doctests coming up)
* Shortened several lines to comply with the standards
* Added doctest and more explanation about Dijkstra execution.
* tests were not passing with python2 due to missing __init__.py file at number_theory folder
* Removed the dot at the beginning of the imported modules names because 'python3 -m doctest -v data_structures/hashing/*.py' and 'python3 -m doctest -v data_structures/stacks/*.py' were failing not finding hash_table.py and stack.py modules.
* Moved global code to main scope and added doctest for project euler problems 1 to 14.
* Added test case for negative input.
* Changed N variable to do not use end of line scape because in case there is a space after it the script will break making it much more error prone.
* Added problems description and doctests to the ones that were missing. Limited line length to 79 and executed python black over all scripts.
* Changed the way files are loaded to support pytest call.
* Added __init__.py to problems to make them modules and allow pytest execution.
* Added project_euler folder to test units execution
* Changed 'os.path.split(os.path.realpath(__file__))' to 'os.path.dirname()'
* Added Burrows-Wheeler transform algorithm.
* Added changes suggested by cclauss
