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This has been an interesting thread to follow. I played around with a Bit Vector algorithm... going for efficiency at the cost of a little brevity. Here's what I came up with:
#!usr/bin/perl -w use Benchmark; timethese(100,{ Adam => sub { @_=(1); L:for(2..1000) { $i=-@_; #updated per node 20757 7/13/2000 while(++$i){ #ditto next L if!($_%$_[$i]) } push@_,$_ } #print join "\t", @_; }, Maverick => sub { for(1..1000){ push@_,$_; for(@_[1..$#_-1]){ pop@_&&last if!($_[-1] %$_) } } #print join "\t", @_; }, Ase => sub { $v='1' x 1000; for(2..1000){ next if !vec($v,$_-1,8); for($q=$_*2;$q<1001;$q+=$_){ vec($v,$q-1,8)=0 } } #print join "\t",grep {vec($v,$_-1,8)} (1..1000); }, });

Here's a table summarizing the data:
Benchmark is your friend!

It seems Mavericks code is only very slightly slower with the benefit of being slightly shorter.

This was done on a 300 mHz amd K6 running win 98 and perl 5.005_02 (activestate 509) as always your mileage may vary.

Update 7/13/2000: I modified Adam's code per this node and re-benchmarked accordingly.

In reply to RE: sieve of Eratosthenes by ase
in thread sieve of erothenes by maverick

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