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This solution is very similar to japhy's, although I started it without looking at his. I did use his solutions to inspire me to shorten mine, though!

57 characters:

sub sieve { my@p;@_=2..pop;{push@p,$p=shift;redo if@_=grep$_%$p,@_}@p }
58 characters, strict-compliant:
sub sieve { my@p;@_=2..pop;{push@p,shift;redo if@_=grep$_%$p[-1],@_}@p }
BTW, what is the Big-O of the Sieve of Eratosthenes? :)

In reply to Re: (Golf): Sieve of Eratosthenes by chipmunk
in thread (Golf): Sieve of Eratosthenes by tilly

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