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| From | Cecil Westerhof <Cecil@decebal.nl> |
| Newsgroups | comp.lang.python |
| Subject | Lucky numbers in Python |
| Organization | Decebal Computing |
| X-Face | "(y8cC@tg_12{">GF'UXTW]FHI2wMiZNrnf'1EFQ&O#$m:f#O7+7}kR<J%a^F2lh4[N~Yz4 nSp#c+aQo1b5=?HcNEkQ7QzF<])O3X4MDL/AYjys&*mt>,v+Pti8=Vi/Z"g^?b"E |
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| Date | Wed, 29 Apr 2015 20:24:02 +0200 |
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I wrote a function lucky_numbers:
def lucky_numbers(n):
if n < 3:
return [1]
sieve = range(1, n + 1, 2)
sieve_index = 1
while True:
skip_count = sieve[sieve_index]
sieve_len = len(sieve)
if sieve_len < skip_count:
break
for del_index in range((sieve_len // skip_count) * skip_count - 1,
skip_count - 2, -skip_count):
del sieve[del_index]
sieve_index += 1
return sieve
I was wondering if there is a way to do this:
for del_index in range((sieve_len // skip_count) * skip_count - 1,
skip_count - 2, -skip_count):
del sieve[del_index]
in a more efficient way.
--
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof
Back to comp.lang.python | Previous | Next — Next in thread | Find similar | Unroll thread
Lucky numbers in Python Cecil Westerhof <Cecil@decebal.nl> - 2015-04-29 20:24 +0200
Re: Lucky numbers in Python Ian Kelly <ian.g.kelly@gmail.com> - 2015-04-29 13:57 -0600
Re: Lucky numbers in Python Cecil Westerhof <Cecil@decebal.nl> - 2015-04-29 23:45 +0200
Re: Lucky numbers in Python Ian Kelly <ian.g.kelly@gmail.com> - 2015-04-29 16:38 -0600
Re: Lucky numbers in Python Cecil Westerhof <Cecil@decebal.nl> - 2015-04-30 02:01 +0200
Re: Lucky numbers in Python Ian Kelly <ian.g.kelly@gmail.com> - 2015-04-29 20:55 -0600
Re: Lucky numbers in Python Cecil Westerhof <Cecil@decebal.nl> - 2015-04-30 08:34 +0200
Re: Lucky numbers in Python Chris Kaynor <ckaynor@zindagigames.com> - 2015-04-29 15:56 -0700
Re: Lucky numbers in Python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-04-30 10:11 +1000
Re: Lucky numbers in Python Ian Kelly <ian.g.kelly@gmail.com> - 2015-04-29 21:08 -0600
Re: Lucky numbers in Python Cecil Westerhof <Cecil@decebal.nl> - 2015-04-30 20:55 +0200
Re: Lucky numbers in Python Dave Angel <davea@davea.name> - 2015-04-30 15:28 -0400
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