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* pre-commit: Upgrade psf/black for stable style 2023 Updating https://github.com/psf/black ... updating 22.12.0 -> 23.1.0 for their `2023 stable style`. * https://github.com/psf/black/blob/main/CHANGES.md#2310 > This is the first [psf/black] release of 2023, and following our stability policy, it comes with a number of improvements to our stable style… Also, add https://github.com/tox-dev/pyproject-fmt and https://github.com/abravalheri/validate-pyproject to pre-commit. I only modified `.pre-commit-config.yaml` and all other files were modified by pre-commit.ci and psf/black. * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci --------- Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
46 lines
1020 B
Python
46 lines
1020 B
Python
"""Segmented Sieve."""
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import math
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def sieve(n: int) -> list[int]:
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"""Segmented Sieve."""
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in_prime = []
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start = 2
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end = int(math.sqrt(n)) # Size of every segment
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temp = [True] * (end + 1)
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prime = []
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while start <= end:
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if temp[start] is True:
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in_prime.append(start)
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for i in range(start * start, end + 1, start):
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temp[i] = False
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start += 1
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prime += in_prime
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low = end + 1
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high = min(2 * end, n)
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while low <= n:
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temp = [True] * (high - low + 1)
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for each in in_prime:
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t = math.floor(low / each) * each
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if t < low:
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t += each
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for j in range(t, high + 1, each):
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temp[j - low] = False
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for j in range(len(temp)):
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if temp[j] is True:
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prime.append(j + low)
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low = high + 1
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high = min(high + end, n)
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return prime
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print(sieve(10**6))
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