Du Yuanchao 0591968947
Optimization and fix bug (#2342)
* * optimization aliquot_sum
* fix bug in average_median

* fixup! Format Python code with psf/black push

* Update maths/average_median.py

* updating DIRECTORY.md

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
2020-08-21 14:39:03 +08:00
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2019-10-05 10:14:13 +05:00
2019-12-26 19:50:12 +08:00