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 2.7 and Python 3.x.
Linux, Mac, and Windows are supported.
Documentation
See documentation.md.
Example Usage
See example.py.
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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