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(tye)Re3: (Golf): Sieve of Eratosthenes

by tye (Cardinal)
on May 20, 2001 at 01:56 UTC ( #81769=note: print w/ replies, xml ) Need Help??

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  1. or download this
    sub sieve3 {
        grep{@_[map$a*$_,$_..@_/($a=$_)]=0if$_[$_]>1}@_=0..pop
    } #                  ^^
    ...
    for( @ARGV ) {
        print "$_: ",join(" ",sieve3($_)),$/;
    }
    
  2. or download this
    2=5-3(x2)    # 3..5, 5..7
    4=11-7(x3)   # 7..11, 13..17, 19..23
    6=29-23(x7)
    ...
    96=360749-360653
    112=370373-370261
    114=492227-492113
    

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