https://github.com/dstein64/fenwick

An implementation of Fenwick trees (Fenwick 1994).
https://github.com/dstein64/fenwick

binary-indexed-tree data-structures fenwick-tree

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An implementation of Fenwick trees (Fenwick 1994).

• Host: GitHub
• URL: https://github.com/dstein64/fenwick
• Owner: dstein64
• License: mit
• Created: 2018-08-03T20:38:13.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2024-10-24T18:44:16.000Z (2 months ago)
• Last Synced: 2024-10-25T19:40:20.979Z (2 months ago)
• Topics: binary-indexed-tree, data-structures, fenwick-tree
• Language: Python
• Homepage: https://pypi.org/project/fenwick/
• Size: 39.1 KB
• Stars: 6
• Watchers: 3
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.rst
  • License: LICENSE

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README

        
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fenwick

=======

A Python library that implements Fenwick trees, based on the algorithm in

(Fenwick 1994).

Features

--------

- Update a frequency in ``O(log n)``.

- Retrieve a single frequency in ``O(log n)``.

- Initialize existing frequencies in ``O(n)``.

- Retrieve all frequencies in ``O(n)``.

Requirements

------------

*fenwick* supports ``python>=3.6``.

Linux, Mac, and Windows are supported.

Installation

------------

`fenwick `__ is available on PyPI, the Python Package Index.

::

    $ pip install fenwick

Documentation

-------------

See `documentation.md `__.

Example Usage

-------------

See `example.py `__.

Tests

-----

Tests are in `tests/ `__.

::

    # Run tests

    $ python -m unittest discover tests -v

License

-------

The code in this repository has an `MIT License `__.

See `LICENSE `__.

References

----------

Fenwick, Peter M. 1994. “A New Data Structure for Cumulative Frequency Tables.”

Software: Practice and Experience 24 (3): 327–36.