A Python implementation of Fenwick trees
Project description
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.
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