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[pre-commit.ci] pre-commit autoupdate (#6629)
* [pre-commit.ci] pre-commit autoupdate updates: - [github.com/psf/black: 22.6.0 → 22.8.0](https://github.com/psf/black/compare/22.6.0...22.8.0) - [github.com/asottile/pyupgrade: v2.37.0 → v2.38.2](https://github.com/asottile/pyupgrade/compare/v2.37.0...v2.38.2) - https://gitlab.com/pycqa/flake8 → https://github.com/PyCQA/flake8 - [github.com/PyCQA/flake8: 3.9.2 → 5.0.4](https://github.com/PyCQA/flake8/compare/3.9.2...5.0.4) - [github.com/pre-commit/mirrors-mypy: v0.961 → v0.981](https://github.com/pre-commit/mirrors-mypy/compare/v0.961...v0.981) - [github.com/codespell-project/codespell: v2.1.0 → v2.2.1](https://github.com/codespell-project/codespell/compare/v2.1.0...v2.2.1) * Fix a long line * Update sol1.py * Update sol1.py * lambda_ * Update multi_level_feedback_queue.py * Update double_ended_queue.py * Update sequential_minimum_optimization.py * Update .pre-commit-config.yaml Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com> Co-authored-by: Christian Clauss <cclauss@me.com>
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@ -8,7 +8,7 @@ Hexagonal H(n) = n * (2 * n − 1) 1, 6, 15, 28, 45, ...
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It can be verified that T(285) = P(165) = H(143) = 40755.
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Find the next triangle number that is also pentagonal and hexagonal.
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All trinagle numbers are hexagonal numbers.
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All triangle numbers are hexagonal numbers.
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T(2n-1) = n * (2 * n - 1) = H(n)
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So we shall check only for hexagonal numbers which are also pentagonal.
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"""
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@ -62,7 +62,7 @@ def non_bouncy_upto(n: int) -> int:
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def solution(num_digits: int = 100) -> int:
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"""
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Caclulate the number of non-bouncy numbers less than a googol.
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Calculate the number of non-bouncy numbers less than a googol.
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>>> solution(6)
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12951
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>>> solution(10)
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