Mit zwei Sprachen Ihrer Wahl, schreiben die kleinste „mutual quine “ Sie können.

Das heißt, schreiben Sie ein Programm P in Sprache A, das den Quellcode für ein Programm Q in Sprache B ausgibt, so dass die Ausgabe des Programms Q mit dem Quellcode für P identisch ist.

Leere Dateien werden weder gezählt, noch werden Programme im Stil "Quelldatei lesen und drucken" ausgeführt.

Edit: Antworten mit P = Q zählen nicht mehr.

> <> (Fisch) und Python - 26 Zeichen

"00gr00g:a9*2+$' tnirp'>o<

Erzeugt diese Python

print "\"00gr00g:a9*2+$' tnirp'>o<"

Python und Ruby, 39 Zeichen

Dieses Python-Snippet

s='puts %%q{s=%r;print s%%s}';print s%s

generiert dieses Ruby-Snippet

puts %q{s='puts %%q{s=%r;print s%%s}';print s%s}

Das erzeugt dann wieder das anfängliche Python-Snippet:

$ diff -s mutualquine.py <(ruby <(python mutualquine.py))
Files mutualquine.py and /dev/fd/63 are identical

Beachten Sie, dass dies der Antwort von JB ähnelt .

C und Perl, 73

Dieses C:

main(s){printf(s="print q<main(s){printf(s=%c%s%c,34,s,34);}>",34,s,34);}

... gibt folgendes Perl aus:

print q<main(s){printf(s="print q<main(s){printf(s=%c%s%c,34,s,34);}>",34,s,34);}>

... das gibt das C zurück.

C und C ++, 123 Zeichen

Dieses C (kompilierbar mit gcc v4.3.4):

#include <stdio.h>
main(){char *c="#include <stdio.h>%cmain(){char *c=%c%s%c;printf(c,10,34,c,34);}";printf(c,10,34,c,34);}

gibt dieses (identische) C ++ aus (kompilierbar mit g ++ 4.3.4, eine Warnung):

#include <stdio.h>
main(){char *c="#include <stdio.h>%cmain(){char *c=%c%s%c;printf(c,10,34,c,34);}";printf(c,10,34,c,34);}

Dies entspricht den Regeln, wie sie veröffentlicht wurden. : P Und wie bei Ventero basiert dies auf der Antwort von JB .

Java nach Python - 219

Java:

class Q{public static void main(String[]a){char q=34,c=39;String s="print%sclass Q{public static void main(String[]a){char q=34,c=39;String s=%s%s%s;System.out.printf(s,c,q,s,q,c);}}%s";System.out.printf(s,c,q,s,q,c);}}

Python:

print'class Q{public static void main(String[]a){char q=34,c=39;String s="print%sclass Q{public static void main(String[]a){char q=34,c=39;String s=%s%s%s;System.out.printf(s,c,q,s,q,c);}}%s";System.out.printf(s,c,q,s,q,c);}}'

Nutzt die Tatsache, dass Python 'Strings zulässt ; Dies macht es viel einfacher, den Quellcode des Java-Programms in das Python-Programm zu schreiben.

Python + Piet-Einzeiler: 417 Zeichen + 7391 7107 ausführende Codels

Dieses Python-Skript erstellt ein 7393 x 2-Bild. der am weitesten rechts stehende 2x2-Block ist ein "Sentinel", der das Programm beendet; also zähle ich die nicht; und die zweite Reihe ist sonst weiß. Ich kann den Piet-Code wahrscheinlich noch weiter reduzieren, indem ich Additions- / Subtraktions- / Multiplikationsketten anstelle des naiven binären Algorithmus verwende ... aber ich möchte keine Lösung für ein zukünftiges Rätsel herausgeben.

Ich werde das Bild nicht hier posten, weil es so lächerlich ist. Wenn Sie es sehen möchten, führen Sie den Python-Code aus und leiten Sie die Ausgabe in eine PPM-Datei. Konvertieren Sie dann die PPM-Datei in eine GIF-Datei, und führen Sie die Ausgabe bei Rapapaing aus . (Alternativ können Sie auch einen Nicht-Web-Piet-Interpreter verwenden, der .ppm enthält.)

A='P=lambda A:reduce(lambda(D,H,B),P:(D[P/3:]+D[:P/3],H[P%3*2:]+H[:P%3*2],B+"".join("%i "%H[(D[0]/P)%2]for P in[1,2,4])),map(" A !        @    B".find,A),([1,3,2,6,4,5],[0,192,192,255,0,255],"P3 %i 2 255 "%(len(A)+2)))[2]+"255 "*4+"0 0 "+"255 "*len(A)*3+"255 0 0 "*2;B=lambda D:["@!%s","@@!%s!"][D%2]%B(D/2)if 1<D else"";print P("".join("A%sB"%B(ord(D))for D in"A=%s;exec A[:-13]"%`A`)+" ");exec A[:-13]';exec A[:-13]

edit: golf den piet ein wenig durch reduzierung des hamming-gewichts von variablennamen.

weniger Golf-Pre-Quine :

Dies ist eine frühere Version, bevor mir klar wurde, dass ich sie einzeilig machen könnte. Es ist etwas einfacher zu verstehen. Die Funktion P übersetzt einen speziellen Befehlssatz in Piet; und die Funktion p nimmt eine ganze Zahl und erzeugt eine Folge von Anweisungen, um diese ganze Zahl auf dem Stapel zu erzeugen. Ich benutze nur die Anweisungen =,+,:,|, also könnte dies wahrscheinlich effizienter gemacht werden ... aber ich mag es irgendwie, einen ausgewachsenen Piet-Compiler (von Art) in der Quelle zu haben.

s="""def P(s):
 l=len(s)+1;R="P3 %i 2 255 "%(l+2);C=[1,3,2,6,4,5];V=[0,192,192,255,0,255]
 for x in map("=|^+-*/%~>.,:@$?#!".find,"="+s):
  C=C[x//3:]+C[:x//3];V=V[x%3*2:]+V[:x%3*2]
  for i in [1,2,4]:R+="%i "%V[(C[0]//i)%2]
 return R+"255 "*4+"0 0 "+"255 "*l*3+"255 0 0 "*2
p=lambda x:[":+%s","::+%s+"][x%2]%p(x/2)if x/2 else""
print P("".join("|%s!"%k(ord(c))for c in "s="+`s`+";exec s[:-13]"))
exec s[:-13]"""
exec s[:-13]

/Brainf..k/, 6988 Bytes

Brainfuck

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Probieren Sie es online!

Brain-Flak

(()()()()()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(()()()()()())(()()()()()()())(()())(()()()()()())(()()()()()()())(()()()()()()()()()()())(()()()()()())(()()()()()()())(()()()()()()()()()())(())(()()()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(()())(()()()()()()()()())(())(()())(()()()()()())(())(())(())(())(())(()())(())(()())(())(()())(())(()())(())(()())(()())(()()()()()()()()()())(()()()()()()()()()()())(()())(()()()()()()()()()())(()()()()()()()()()()())(()())(()()()()()()()()()())(()()()()()()()()()()())(()())(()()()()()()())(()())(()()()()()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(()())(()()()()()()())(()())(()()()()()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(())(()())(()())(()()()()()()())(()())(()()()()()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(())(()())(()())(()()()()()()())(()())(()()()()()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(()())(()()()()()()())(()())(()()()()()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(())(())(())(()())(())(()())(())(()())(()())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(()())(()()()()()()()()()())(()()()()()()()()()()())(()())(()()()()()()())(()())(()()()()()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(())(()())(()())(()()()()()()())(()())(()()()()()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(())(())(())(())(()())(())(()())(())(()())(()())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(()())(()()()()()()()()()())(()()()()()()()()()()())(()())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(()())(()()()()()()())(()())(()()()()()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(())(()())(()())(()()()()()()())(()())(()()()()()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(())(())(())(())(()())(())(()())(())(()())(())(()())(())(()())(()())(()())(()()()()()()()()()())(()()()()()()()()()()())(()()()()()()()()()())(()()()()()()()()()()())(()())(()()()()()()()()()())(()()()()()()()()()()())(()())(()()()()()()())(()())(()()()()()()()()()())(())(()()()()()())(()()()()()()()()()())(()()()()()()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(())(()())(()())(()()()()()()())(()())(()()()()()()()()()()())(()()()()()()()()()()())(()()()()()()()()()()())(()()()()()()()()()()())(()()()()()()()()()()())(()()()()()()()()()()())(()()()()()()()()()()())(()()()()()()()()()()())(()()()()()()()()()()())(()()()()()()()()()()())(()()()()()()()()()())(()()()()()()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(()()()()()())(())(()()()()()())(()()()()()()())(()())(()()()()()())(()()()()()()())(()()()()()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(()()()()()())(()()()()()()())(()())(()()()()()())(()()()()()()())(()()()()()()()()()()())(()()()()()()()()()())(()()()()()()()()()()())(()()()()()()())(()())(())(()()()()()())(()()()()()()())(()()()()()())(()()()()()()())(()())(()()()()()())(()()()()()()())(()()()()()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(()()()()()())(()()()()()()())(()())(()()()()()())(()()()()()()())(()()()()()()()()()()())(()()()()()()()()()())(()()()()()()()()()()())(()()()()()())(()()()()()()())(()()()()()()()()()())(())(()()()()()()()()()())(()()()()()()()()()()())(()()()()()()()())(())(()())(()()()()()()()()())(()())(()()()()()())(()()()()()()())(())(())(())(())(())(())(()())(())(()())(())(()())(()())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(()())(()())(()()()()()()()()()())(()()()()()()()()()()())(()()()()()()()()()())(()()()()()()()()()()())(()())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(()())(()()()()()())(()()()()()()())(()()()()()()()()()()())(()()()()()()()()()())(()()()()()()()()()()())(()()()()()())(()()()()()()())(())(())(())(())(()()()()()()()()()())(()()()()()()()()()()())(()())(())(())(())(())(()())(())(()())(())(()())(()())(()())(()()()()()()()()()())(()()()()()()()()()()())(()()()()()()()()()())(()()()()()()()()()()())(()())(()()()()()()()()()())(()()()()()()()()()()())(())(()())(()())(()())(()())(()()()()()())(()()()()()()())(()()()()()()()()()()())(()()()()()()()()()())(()()()()()()()()()()())(())(()()()()()()()())((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<++>-[<++>-[<+>-[<++++++++++++++>-[<++>-[<+++++++++++++++++++++++++++++>-[<++>-[<++++++++++++++++++++++++++++++>-[<++>-]]]]]]]]]]<.>>>>]}{}<>

Probieren Sie es online!

Der Brain-Flak könnte bei TIO ausfallen.

Erläuterung

Kommt bald.

Ruby und Python (393 + 413 = 806 Zeichen)

Leichte Änderung meiner Antwort . Könnte definitiv reduziert werden, da ich die Eingabe nur ohne Optimierung hartcodiert habe.

Rubin (393 Zeichen)

require 'json';s=%q[{"ruby":[" %q[","require 'json';s=##;j=JSON.load s;puts j[l='python'][1].sub('##',j[l][0].delete(' ')+s+j[l][2].delete(' '))"," ]"],"python":["' ''","import json,re;s=##;j=json.loads(s);l='ruby';print(re.sub('##',j[l][0].replace(' ','')+s+j[l][2].replace(' ',''),j[l][1],1))","' ''"]}];j=JSON.load s;puts j[l='python'][1].sub('##',j[l][0].delete(' ')+s+j[l][2].delete(' '))

Python (413 Zeichen)

import json,re;s='''{"ruby":[" %q[","require 'json';s=##;j=JSON.load s;puts j[l='python'][1].sub('##',j[l][0].delete(' ')+s+j[l][2].delete(' '))"," ]"],"python":["' ''","import json,re;s=##;j=json.loads(s);l='ruby';print(re.sub('##',j[l][0].replace(' ','')+s+j[l][2].replace(' ',''),j[l][1],1))","' ''"]}''';j=json.loads(s);l='ruby';print(re.sub('##',j[l][0].replace(' ','')+s+j[l][2].replace(' ',''),j[l][1],1))

Python 2 bis Befunge 98, 94 78

Verwenden Sie erneut die beiden Möglichkeiten von Python, um Zeichenfolgen zu erstellen:

Python:

s='<@,kM%c%cs=%c%s%c;print s%%(39,34,39,s,39,34)%c';print s%(39,34,39,s,39,34)

Befunge 98:

<@,kM'"s='<@,kM%c%cs=%c%s%c;print s%%(39,34,39,s,39,34)%c';print s%(39,34,39,s,39,34)"

Das Python-Programm formatiert den String so, dass er sich selbst und die Zeichen für das einfache und das doppelte Anführungszeichen enthält.

Das Befunge-Programm funktioniert folgendermaßen:

• <: Bewegen Sie sich nach links und wickeln Sie sich um. Also führen wir jetzt die Befehle von rechts nach links aus

• ": mach es so, dass jedes Zeichen, auf das wir stoßen, auf den Stapel geschoben wird, bis wir auf ein anderes stoßen ", also drücken wir:

  )43,93,s,93,43,93(%s tnirp;'c%)43,93,s,93,43,93(%%s tnirp;c%s%c%=sc%c%Mk,@<'=s
  

  Das ist eigentlich nur das Python-Programm, umgekehrt, weil Befunge druckt (das ist eine Pop + Print-Schleife)

• 'M: Mauf den Stapel schieben . Mist auch die Zahl 77, die eins weniger ist als die Anzahl der Zeichen, die vom "s auf den Stapel geschoben werden .
• k: Entferne den obersten Wert vom Stapel ( M) und führe die nächste Operation so oft aus, plus eins.
• ,: Den höchsten Wert vom Stapel nehmen und das Zeichen ausdrucken.
• @: Programm beenden.

Unterlast und Betaload , 16 Bytes (nicht konkurrierend)

Unterlast:

(a(:^)*a(S)*S):^

Betaload:

((a(:^)*a(S)*S):^)S

Betaload ist eine Obermenge von Underload, dies könnten also zwei Underload-Antworten sein.

Dies ist kein Wettbewerb, da Betaload erstellt wurde, nachdem diese Herausforderung veröffentlicht wurde.

Clipper und C (111 + 108 = 219 Zeichen)

Schermaschine (111)

?'char*f="%c%cchar*f=%c%s%c;main(){printf(f,63,39,34,f,34,39,10);}%c%c";main(){printf(f,63,39,34,f,34,39,10);}'

C (108)

char*f="%c%cchar*f=%c%s%c;main(){printf(f,63,39,34,f,34,39,10);}%c%c";main(){printf(f,63,39,34,f,34,39,10);}

Dies ist eine kleine Ausrede, weil:

1. Der Befehl "Drucken" in Clipper ist wirklich einfach: ?'foo':-)
2. Ich habe es auf der "klassischen C" -Quine von http://www.nyx.net/~gthompso/quine.htm basiert , mit einigen Modifikationen, um die ?und 's zusammenzudrücken.
3. Das habe ich nicht getan #include <stdio.h>, daher wird eine Compiler-Warnung ausgegeben
4. Der von der Clipper-Version ausgegebene C-Code musste beschleunigt werden, um einen Zeilenumbruch zu entfernen, der durch ein Spaltenlimit von 80 Zeichen in meinem Terminal oder in der Harbour-Druckroutine oder ähnlichem verursacht wurde.

Python und ~ - ~! - 77 und 81 = 158

Dieser Python-Code:

q=chr(124);s='@%sq=chr(124);s=%s;print(s%%repr(s))%s:';print(s%(q,repr(s),q))

gibt diese ~ - ~! Code:

@|q=chr(124);s='@%sq=chr(124);s=%s;print(s%%repr(s))%s:';print(s%(q,repr(s),q))|:

Kann definitiv stark verbessert werden und übernimmt eine ganze Reihe von den anderen Antworten.

Javascript und Windows .bat (71 und 81)

f=()=>{console.log('echo f='+(f+';f()').replace(/(?=[>^\\])/g,'^'))};f()

und

echo f=()=^>{console.log('echo f='+(f+';f()').replace(/(?=[^>^^^\^\])/g,'^^'))};f()