Created
April 14, 2014 06:45
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エラトステネスの篩 -暫定最強版-
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| def sieve(n): | |
| num = [True]*n | |
| num[0] = num[1] = False | |
| for i in xrange(2,int(n**0.5)+1): | |
| if num[i]: | |
| for j in xrange(i**2, n, i): | |
| num[j] = False | |
| return [i for i in xrange(2,n) if num[i]] | |
| print sieve(999999) |
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