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Obfuscated code

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Got some code which would take a Perl grand master to understand without running it? Post it in this section so we can stare at it in awe.

Word of warning, though: Don't be too cocky with your post — almost inevitably someone will post a reply that does the exact same thing in even fewer characters!

New Less than Readable Code
Amusement Japh
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by golux
on Oct 12, 2015 at 23:32
    Tested on both Linux and Windows, and requires the Tk module to be installed. There's a lot more I could add to the basic program, but the obfuscated version was already getting fairly large.

    Without giving too much away (and perhaps you've already guessed what it does), the arrow keys work the same as the keys 'h', 'j', 'k' and 'l'. Use ^C to quit, and try the <space> and 'n' keys too.

    Visually, there's a nice surprise when it runs (see if you can figure out the trick). I had a lot of fun getting the format "just right", and was pleased to see that "perl -MO=Deparse" didn't give anything away :-)


    s''$a=[];$ b=[];$c={} ;$d={};$e= [];$f={};$ g=[];use`T k;$W=MainW indow->new ;$W->iconi fy;$W->geo metry("1x1 -1-1");$W- >repeat(50 =>sub{$h`o r$W->deico nify;$i#0; if($o){#1i f$h++%5}el sif(!$j){# 1if$h++%20 }if($o){#3 Y=21;$Y>1; $Y--){my$J =$a#6Y];#3 X=0;$X<@$J ;$X++){my$ V=$J#6X]|| 0;(#7$o->{ $V})#2my$T =#5f->{$Y} ->{$X};my$ Z=$Y+1;$a# 6Y]#6X]=0; $a#6Z]#6X] =$V;$f->{$ Z}->{$X}=$ T;J($T,$X, $Z)}}$o=&M }my$N=0;#3 Y=2;$Y<22; $Y++){my$J =$a#6Y];my $K=1;#3X=0 ;$X<@$J;$X ++){(2==$J #6X])or$K= 0}if($K){+ +$N;$J->[0 ]=3}}if($N ){#3Y=2;$Y <22;$Y++){ my$J=$a#6Y ];(3==$J-> [0])#2#3X= 0;$X<@$J;$ X++){$a#6Y ]#6X]=0;(# 5f->{$Y}-> {$X})#4}my $L=5;#3Y=2 ;$Y<22;$Y+ +){my$J=$a #6Y];#3X=0 ;$X<@$J;$X ++){L($X,$ Y,2,$L++)i f(2==$a#6Y ]#6X])}}$o =&M;$o#0}@ $b`or`do{m y$M=$n||&I ;@$g`and`D ($g);$n=&I ;my$v=$d-> {$n}->[0]; for(@$v){m y($X,$Y)=@ $_;my$x0=4 24+14*$X;m y$y0=32+14 *$Y;my$G=[ $x0,$y0,14 ,14];my$T= B($c->{$n} ,$G);#8@$g ,[$x0,$y0, $T];}$m=$M ;my$Q=$d-> {$M}->[0]; $k=0;$b=[] ;for`my$w( @$Q){my($X ,$Y)=@$w;i f($a#6Y]#6 X+3]){for` my$R(keys% $f){my$x=$ f->{$R};ma p{$_->conf igure(-bg= >"gray")}v alues%$x}& F;$h=0;$b= [];#1$i=1} }my$I=0;fo r(@$Q){my( $X,$Y)=@$_ ;$X+=3;$I+ +or$l=$X;m y$T=B($c-> {$M},0);#8 @$b,[$X,$Y ,$T];J($T, $X,$Y);$a# 6Y]#6X]=1} #1&N};for( @$b){my($x 1,$Z)=($_- >[0],1+$_- >[1]);($Z< 22)or`goto `N;my$V=$a #6Z]#6x1]| |0;($V>1)a nd`goto`N} for(@$b){m y($X,$Y)=@ $_;$a#6Y]# 6X]=0;}for (@$b){++$_ ->[1];my($ X,$Y,$T)=@ $_;J($T,$X ,$Y);$a#6Y ]#6X]=1}#1 ;N:$j=0;wh ile(@$b){m y$w=shift@ $b;my($X,$ Y,$T)=@$w; $a#6Y]#6X] =2;$f->{$Y }->{$X}=$T }$b=[];&N; });$W->bin d("<Contro l-c>"=>sub {exit});$W ->bind("<K eyPress>"= >sub{my$E= shift;my$F =lc($E->XE vent->K);( $F`eq"n")# 0&E;@$b#0( $F=~/\Ah|l eft/)?G(-1 ):($F=~/\A l|right/)? G(1):($F=~ /\Aj|down/ )?H(-1):($ F=~/\Ak|up /)?H(1):(" space"eq$F )?$j=1:0}) ;&A;for`my $P([qw[I`1 59d`89ab`e a62`7654`c yan]],[qw[ J`159`8456 `a951`2654 `blue]],[q w[L`1598`4 56a`9512`6 540`orange ]],[qw[O`4 589`4589`4 589`4589`y ellow]],[q w[S`4158`4 59a`9562`6 510`green] ],[qw[T`14 59`4956`96 51`6154`pl um]],[qw[Z `459`8956` a651`2154` red]],){my $R=shift@$ P;my$O=$d- >{$R}=[];$ c->{$R}=po p@$P;map{m y$Q=[];my$ V=hex($_); for(1..4){ my$Y=$V&0x 03;$V>>=2; my$X=$V&0x 03;$V>>=2; unshift@$Q ,[$X,$Y]}# 8@$O,$Q}@$ P}map{B("b lack",$_)} ([128,648, 280,8],[12 0,620,8,36 ],[408,620 ,8,36]);Tk ::MainLoop ;^A{#9Y=0; $Y<22;$Y++ ){map{$a#6 Y]#6_]=0}( 0..9)}}^B{ my($B,$G)= @_;my$T=$W ->Toplevel ;$T->overr ideredirec t(1);$T->c onfigure(- highlightt =>1,-highl ightb=>"bl ack",-back ground=>$B );#1$G?K($ T,@$G):$T} ^C{my($X,$ Y)=@_;#1($ X<0or$X>9o r$Y<0or$Y> 21)?0:1}^D {my$t=pop; while(my$P =shift@$t) {$P->[2]#4 }^E{&A;D($ b);D($g);$ b=[];for(k eys%$f){my $S=#5f->{$ _};map{(#5 S->{$_})#4 keys%$S}&F ;$i=$j=$h= 0}^F{map{$ _->[0]#4@$ e;$e=[]}^G {my$D=pop; for`my$u(@ $b){my($X, $Y)=@$u;($ a#6Y]#6X+$ D]>1)#0;C( $X+$D,$Y)o r#1}my$I=0 ;for(@$b){ my($X,$Y,$ T)=@$_;--$ a#6Y]#6X]; ++$a#6Y]#6 X+=$D];J($ T,$X,$Y);$ I++or$l=$X ;$_->[0]=$ X}&N}^H{my $p=pop;($m `eq"O")#0; my$N1=($k+ $p)%4;my$A r=$d->{$m} ;my$As=$Ar #6k];my$At =$Ar#6N1]; my$O=[];my $N=[];#9I= 0;$I<@$b;$ I++){my$u= $b#6I];my( $X,$Y,$T)= @$u;my($x0 ,$y0)=@{$A s#6I]};my( $x1,$Z)=@{ $At#6I]};m y$D=$x1-$x 0;my$s=$Z- $y0;#8@$O, [$X,$Y];C( $X+=$D,$Y+ =$s)or#1;# 8@$N,[$X,$ Y,$T];}$b= $N;$k=$N1; #9I=0;$I<@ $O;$I++){m y($x0,$y0) =@{$O#6I]} ;my($x1,$Z ,$T)=@{$N# 6I]};--$a# 6y0]#6x0]; ++$a#6Z]#6 x1];J($T,$ x1,$Z);$I` or$l=$x1}& N}^I{@r=ke ys%$c;$r[r and@r]}^J{ my($T,$X,$ Y)=@_;K($T ,128+28*$X ,32+28*$Y) }^K{my($T, $X,$Y,$W,$ H)=@_;$W|| =28;$H||=2 8;$T->geom etry("${W} x$H+$X+$Y" );$T}^L{my ($X,$Y,$U, $V)=@_;#1i f$X<0or$X> 9or$Y<0or$ Y>21;if($U !=$V){($U= =$a#6Y]#6X ])or#1;$a# 6Y]#6X]=$V ;L($X-1,$Y ,$U,$V);L( $X+1,$Y,$U ,$V);L($X, $Y-1,$U,$V );L($X,$Y+ 1,$U,$V)}} ^M{my$E={} ;my$F={};# 9Y=2;$Y<22 ;$Y++){my$ J=$a#6Y];# 9X=0;$X<@$ J;$X++){my $V=$J#6X]| |0;($V>4)# 2++$F->{$V };next`if( #7$E->{$V} );my$Z=$Y+ 1;my$G=($Z >21)?4:$a# 6Z]#6X];($ G>0and$G!= $V)and++$E ->{$V}}}#9 Y=2;$Y<22; $Y++){my$J =$a#6Y];#9 X=0;$X<@$J ;$X++){my$ V=$J#6X]|| 0;(#7$E->{ $V})#2#5F- >{$V};$J#6 X]=2}}(key s%$F)?$F:0 }^N{&F;for `my$u(@$b) {my$X=128+ 28*$u->[0] ;my$G=[$X, 664,28,14] ;my$T=B("p urple",$G) ;push@$e,[ $T,$G]}}'; s+\s*++g;$o=0;for$l(' and return ',' return ',' or next;',########### ' for(my$','->destroy}','delete$','->[$','exists','push',# by golux # 'for(my$'){s&#$o&$l&g&&++$o}eval if s&\^&sub &g&&s&`&$"&g#2015-10-12#
    say  substr+lc crypt(qw $i3 SI$),4,5
42-character maze generator
4 direct replies — Read more / Contribute
by Grimy
on Sep 07, 2015 at 08:46
    print$/,map~ZjN^G^0.0.3x rand 2,1..80for%!
3 direct replies — Read more / Contribute
by Grimy
on Aug 24, 2015 at 05:24
    sub'r{$==rand pop}$|=print"\e[2J";r$l=`tput lines`-2,s/^$/"\e[$=;".r($ +c =`tput cols`-2).f.' Oo*... '=~s!\S\K!\e[B\b !gr/e/s/\d++\B/($a=$&-1)+( +$ ==!$a+r$a%$c?3:2)/e/s/(?<=(.)...B.)./$1/g/s/f\K./chr 32>>$=/e/s/\d+/($ +& ||$l)-1/e,select$,,$,,$,,.009*print$&?$_:"\e[f"."\e[K\n"x6while*_=r.r+ +9
    EDIT: golfed it down a bit, also fixed some literal edge cases (the sprites where behaving strangely when they hit the edges of the screen).
    sub'v{$==!$-+rand pop}[s/\d+/$|--?($-=$&-1)+v$-%$c?3:2:$&-print||`stty + size`- print$&?"\e[?25l\e[2J":y!Oo*.! !r/ge?s/(?<=f|(.))...B.\K./$1||chr 32>> +$=/ge.. 4E4:s/|/o*... //s//\e[B\b /g/s//\e[1;${\v$c=`tput cols`-2}fO/]while*_= +_.v-42#
    The number at the beginning of the last line determines the speed (smaller = faster). The number at the end of the last line is the maximum number of sprites that can be on screen simultaneously.
Autobots, roll out
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by drpaz
on Aug 06, 2015 at 16:05

    Been a while since I posted anything new, had some fun with this. This uses xterm-256 but tested well with putty and comes out fine on cygwin as well.

    #!/usr/bin/perl -w use strict; my @d; my$__ # = ':'; my # $___ =18 ;for( 'a' ..'d' ){ push # @d,$_ .$__. $___;$___ ++;}$___ +=5;for('e'..'i'){push @d,$_.$__ .$___ ;$___+=6;}$___=''; for(1..3) { $___.=$_}push@d,'j'.$__.$___ ;$___=''; for( 1..9){$___.=$_ unless(($_-1)%4 ); }push@d,'k'.$__.$___;$___=''; for('a'.. 'am'){$___.=$_;}push@d,'l'.$__. length($___ );$___=length($___)+36;push @d,'m' . $__.$___;$___*=2;$___-=16;push @d,'n' . $__.$___;$___+=36;for('o'.. 's'){push @d,$_.$__.$___;$___+=7;}push @d,'W'. $__ .$___;my@__;$___=''; while( <DATA>){chomp;s/\s//g; $___.=$_; }push@d,split/\//, $___;my$m; foreach(@d){if( m/^(\w):(.*)$/ ){$m->{$1}="\033". '[48;5;'. $2."m \033[0m";} else{ s/S/ /g;my$_oO_; while((s/^(\d+)(.)//)) {$_oO_ .=$2 x$1}$_oO_ .=$_;$_= $_oO_;$_.= ######### reverse$_; s/(\w)/$m->{$1}/g; print;print "\n";}}#### __DATA__ 22S18 a/18S22b/16S24c /14a2S21d3S/ 14b2S13e11S/14c 3S17f6S/1S13d 3S17g6S/1S13e3S2 1h2S/1S6f3S5f5 S20i/2S5g5S6g6S1 6j/2S7h5S7h5S1 4k/2S9i5S8i5S11W/3 S4j2S5j4S10j4S8 W/3S4k4S5k4S9k6S5W/ 3S4W6S5W5S6W9S2W /3S6W6S5W5S4W3S2W6S/ 4S7W6S5W5S3W2S4W4S /4S9W7S4W3S3W3S5W2S/ 4S 12W6S8W3S6W1S/6S 12W7S6W2S7W/8S13W6S4 W3S6W/3S3W6S1W10l5S2 l1W3S1W5l/3S1W2l 2W 5S2W16l1W2S1W5l/3S2 W3l2W5S3W13l1W3S 1W4l/4S1W5m2W6S14W3S 1W4m/4S1W7m2W21S1W 4m/4S1W8m1W21S1W4m/ 5S1W7n1W21S1W4n/6S1W 6n1W16S3W3S1W3n/6S1 W7n4W10S2W2n1W3S1W3n/ 6S1W11o4W3S3W4o1W3S1W 3o/6S1W14o1W2S1W7o1W3 S1W3o/6S1W14o1W2S1W7o1 W3S1W3o/6S1W14p1W2S1W7 p1W3S1W3p/7S1W13p1W2S1W 7p1W3S1W3p/7S1W13p1W2 S1W7p1W3S1W3p/7S1W13q1W2S 1W7q1W3S4W/7S1W13q1W2 S1W7q1W7S/7S1W13q1W2S1W7q 8W/7S2W12q1W2S1W15q/9 S1W11r1W2S1W15r/10S1W10r 1W2S1W8r7W/11S1W9r1W2 S1W7r1W7S/12S4W5s1W2S1W5s2W 2S6W/16S2W3s1W2S1W4s1 W3S1W6q/18S4W2S1W4s1W2S1W7r /24S5W2S1W8s/24S5W2S9W /26S2W3S9W/
How not to do prime factorization
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by thisisdada
on Jun 30, 2015 at 10:05
    $"x=$%="@ARGV";$~=$;='( +)';while($%>>$:++){if($"=~/$~$/^$"=~/$;$/){$ |=$?=$:>2||die"prime\n";eval"print length(\$$?)".($:>++$?&&"/length(\$ $?).'*'")while$:>$?;die$/}$;=$~;$~=~s~.*~^($&\\1+)~;$~=~s;\d+;1+$&;eg}

    The best thing I can say about this code is that it works. It will take a number via argv give you the prime factorization of that number... eventually. It's not very efficient. At all. I had a lot of fun writing it, but it's really bad at what it does. To give you an idea of how erratic it is, here are some benchmarks:

    While it can distinguish primes at a reasonable rate, it takes a really long time to factor composite numbers. Particularly composite numbers made up of several small primes. Powers of 2 are the worst-case scenario.

    for$b(-25..25){for$a(-50..29){$x=$a/21;$y=$b/15;print$b?chr:chr^chr ord(substr'<6C}'.1x29 .'[FDEq2?@E96Cqa6C=q924',$a)-49;$_=30;($y,$x) =(2*$x*$y+$b/15,$x*$x-$y*$y+$a/21)while$x*$x+$y*$y<9&$_++<95}$_=10}
Is it possible to shorten this code?
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by uacnix
on Jun 16, 2015 at 13:18

    Hello dearest Monks,

    i'm looking for the wisdom of shorthening my code:
    use LWP::Simple; @a = <>; getprint("".($a[0])."&b=".($a[2]));
    As You have noticed, i'm not interested in the second line, but it is required that the program takes 3 lines of input:

    -a digit

    -some bollox that You can skip in the program execution, but it will have to bypass/workaround/skip this line

    -some more or less random characters, that have to be passed as argument.

    I'm just a peasant in PERL, but I heard it's the best language to write shortest code, so i'm trying my luck with It.

    Thank You in advance guys.


    -I've checked the codes, and I've been able to use only the choroba's first code and at this place I'm really sorry that I didn't mention the STDIN input and chomp.

    I found a workaround for chomp- I do it "serverside", my script on the site checks for newline symbols and replaces them

    Anyway, thanks to You, dear Monks, my code is 14 chars shorter, and that's great progress, thank You!
Optimized Mandelbrot set generator
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by thisisdada
on Jun 14, 2015 at 18:30

    I wrote a Mandelbrot set generator. It works on Windows ActivePerl 5.20.2 x64, but I haven't tried it on *nix. It outputs a smoothed, anti-aliased fractal image to 24-bit .bmp file. For optimizations, it takes advantage of symmetry; it skips the cardoid, the main bulb, and the line across y=0; and it checks for cycles when the iteration count gets high. On my computer (2.40GHz i5-2430M), it takes about 10 minutes to generate a 1500x1000 image.

    The code's designed to look like the set, of course. It takes user input to determine the size of the image and the outfile, i.e.:

    C:\Users\Kevin> 1200 mandel.bmp Generating fractal with dimensions 1200 by 800... [==================================================] Saving fractal to mandel.bmp... Done!

    If the given pixel width isn't divisible by 12, the program subtracts until it is.

    for$b(-25..25){for$a(-50..29){$x=$a/21;$y=$b/15;print$b?chr:chr^chr ord(substr'<6C}'.1x29 .'[FDEq2?@E96Cqa6C=q924',$a)-49;$_=30;($y,$x) =(2*$x*$y+$b/15,$x*$x-$y*$y+$a/21)while$x*$x+$y*$y<9&$_++<95}$_=10}
Convoluted Echo
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by KurtSchwind
on May 22, 2015 at 14:19

    So let's say you are on a *nix machine and you need an application that echos what you type. And let's further say that you want to use perl, python, ruby and shell to do it. I bring you convoluted echo. A perl script the writes and executes a python script that's and executes a ruby script which writes and executes a shell script to echo your command line arguments.

    Happy Memorial Day

    #!/usr/bin/perl my $echo = q{}; open my $py, '>', '' or die "Cannot open $!\n"; $py->print("#!/usr/bin/python\n\n"); $py->print("import os\n\n"); $py->print("fo = open(\"ce.rb\",\"w\")\n\n"); $py->print("fo.write(\"#!/usr/bin/ruby\\n\")\n"); $py->print("fo.write(\"out_file =\\\"\\\", \\\"w\\\ +")\\n\")\n"); $py->print(q{fo.write("out_file.puts(\"#!/bin/sh\\n\\necho $*\\n\\ +")\n")}); $py->print("\n"); $py->print(q{fo.write("out_file.close\n\n")}); $py->print("\n"); $py->print("\n"); foreach my $a (@ARGV) { $echo .= " ".$a; # $py->print( " $a "); } $py->print(q{fo.write("system(\"/bin/sh }); $py->print(" $echo "); $py->print(q{\")\n")}); $py->print("\nfo.close()\n"); $py->print("os.system(\"/usr/bin/ruby ce.rb\")\n"); close $py; system("/usr/bin/python");
    “For the Present is the point at which time touches eternity.” - CS Lewis
Polybius JAPH
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by teamster_jr
on Apr 29, 2015 at 11:36
    $_ =q#( $.=" 20 2c4a 506 175" )=~s {[ \W] ?([ \w] )\s ?(\w ) }{ $ |= 1 ; "0x$ 1$2 ".( 5 - (++$ b)? " ," :".. " ) }xeg ;$ l=~ s { \s}{ ; ""}exg;@t=split //, "\44_ =q\43$_\43; s/\134\156//xg; eval ".($"x2)."\43TSR'15";map{ $ a[$c /5] [$c++%5] =chr } eval $ .; do {$s += 1; my $ z; if ($t [$s ] eq $"){($ d++% 2 ?$x: $ y )=$ s- $e;$e= $s+ 1;if( !($ d-2) ){$ d=0; push @j,$ a[$ x ][$ y] } } }while@j-25; print join $ /, unpack ("( A69)*" , join"" ,@ t ), join "",$ /, (m ap{( "\43", @$_,$ /) }@ a),"\n\43 ",@j,$/;#; s/\n//xg; eval #TSR'15
JAPH does the splits
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by Schmunzie
on Apr 12, 2015 at 19:14
    My first JAPH for years and years. I'm not sure if this is platform-independent. I hope it is.
    @z=split(//,BGu6pCozwKzR);@y=qw(zlz hqa zuo reg rqz fpx 72 26 25 53 25 + 06);while(@z){@a=split(shift@z,crypt(shift@y,pop@y));@g=split(pop@z, +$a[1]);print $g[0]}

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    [shmem]: more garbage in, more garbage out that would be
    [stevieb]: I found that win10 broke a C# library I was using for one project while enhancing tests for a Perl dist, which breaks other Perl dists, and I'm about to throw my hands up on berrybrew. win2k12 broke one thing, win10 breaks something...
    [stevieb]: ...unrelated which requires replacing a lot of code and a whole lib. I'm about to go nix only ffs
    [shmem]: stevieb: what you're doing sounds afwully complex. Too much for me this evening to provide brighter insight ;-)
    [stevieb]: I don't even own a Windows computer. Both my girl and I have a laptop each with Linux. I'm supporting Windows in some of my projects and I can't even guage whether it's worth it or not.
    [stevieb]: shmem It's something I desired to have years ago, which is why I took over berrybrew. Cross-platform build/test automation locally, or over the network Test::BrewBuild
    [shmem]: sounds good.
    [shmem]: but I'm crumbling smaller stones. remember...
    [stevieb]: I'm working on it to fatten it up and make it more reliant so I can finalize my Raspberry Pi automated build system for that software :) It's all well and fun, until I try to make it work with Windows lol

    How do I use this? | Other CB clients
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