_{Título robado inspirado en la respuesta de Greg Hewgill a ¿Cuál es la diferencia entre JavaScript y Java?}

Introducción

Java y JavaScript son lenguajes de uso común entre los programadores, y actualmente son las etiquetas más populares en Stack Overflow. Sin embargo, como todos sabemos, aparte de nombres similares, los dos no tienen casi nada en común.

En honor a uno de los debates más infames de la programación, e inspirado por mis recientes frustraciones en la búsqueda de etiquetas , propongo lo siguiente:

Reto

Escriba un programa que tome una cadena como entrada. Regrese carsi la cadena comienza con "Java" y no incluye "JavaScript". De lo contrario, regrese carpet.

Ejemplo de entrada y salida

coche:

java
javafx
javabeans
java-stream
java-script
java-8
java.util.scanner
java-avascript
JAVA-SCRIPTING
javacarpet

alfombra:

javascript
javascript-events
facebook-javascript-sdk
javajavascript
jquery
python
rx-java
java-api-for-javascript
not-java
JAVASCRIPTING

Notas

La coincidencia de entrada no debe ser sensible a mayúsculas y minúsculas
Solo las posibilidades de salida deben ser carocarpet
Puntos de bonificación imaginarios si su respuesta usa Java, JavaScript o Regex
Título alternativo: Java es a JavaScript como jamón es a hámster

code-golf string decision-problem pattern-matching Stevoisiak
fuente

2

La nueva etiqueta de coincidencia de patrones necesita una wiki. Contribuya si puede

Christopher

2

Dependiendo del orden en que se realicen las cosas, javacarpetpodrían detectarse errores que los casos de prueba existentes no detectan.

Ray

17

Si obtiene imaginary bonus points if your answer uses Java, Javascript, or Regex, ¿eso hace complejo el bytecount de tal solución? ;)

Steadybox

Alternate Title: Java is to JavaScript as ham is to hamster Actually, the "ham" in "hamster" is cognate to the food "ham". The food "ham" is pig meat, and the term "hamster" is derived from the related animal, the guinea pig, whose meat replaced pigs meat on long sea voyages as the animals were easier to raise on a ship.

dotancohen

100

Java / JavaScript políglotas, 108 107 106 bytes

//\u000As->s.matches("(?i)(?!.*javascript)java.*"/*
a=>/(?!.*javascript)^java/i.test(a/**/)?"car":"carpet"

Ejecutar como Java

//\u000As->s.matches("(?i)(?!.*javascript)java.*"/*
a=>/(?!.*javascript)^java/i.test(a/**/)?"car":"carpet"

Pruébalo en línea!

Nota: no confíe en el resaltado ya que es incorrecto. El verdadero Java, correctamente interpretado, se ve a continuación porque \u000Ase interpreta en el primer paso de la compilación como \n, de facto, terminando el comentario que comenzó con el comentario de línea ( //).

//
s->s.matches("(?i)(?!.*javascript)java.*"/*
a=>/(?!.*javascript)^java/i.test(a/**/)?"car":"carpet"

Ejecutar como JavaScript

//\u000As->s.matches("(?i)(?!.*javascript)java.*"/*
a=>/(?!.*javascript)^java/i.test(a/**/)?"car":"carpet"

Créditos a @CowsQuak para la versión JS.

let f=

//\u000As->s.matches("(?i)(?!.*javascript)java.*"/*
a=>/(?!.*javascript)^java/i.test(a/**/)?"car":"carpet"

var a=["java","javafx","javabeans","java-stream","java-script","java-8","java.util.scanner","javascript","java-avascript","javascript-events","facebook-javascript-sdk","javajavascript","jquery","python","rx-java","java-api-for-javascript","not-java"];

for(var s of a) console.log(s.padStart(a.reduce((x,y)=>x.length>y.length?x:y).length) + "=>" + f(s));

Expandir fragmento

¿Cuántos puntos de bonificación imaginarios para esta respuesta?

-1 byte gracias a @Nevay en la respuesta de Java.

Olivier Grégoire
fuente

1

This isn't competitive in JavaScript or Java. I'm not even convinced it's a serious contender, which is a requirement for all submissions.

Dennis

10

@Dennis Thank you for your information. However I consider this as a polyglot entry. Is there any rule against polyglot entries when they aren't explicitly requested? I tried to golf this as much as possible. For instance, I tried to put both regexes together, but I couldn't get anything shorter than this (because of the two different albeit similar regexes, and their delimiter). It's also impossible to have the same variable definition because JavaScript doesn't allow a new line between a and =>. I tried to stay in the spirit of golfing. If I did something wrong, please tell me?

Olivier Grégoire

24

@Dennis IMHO "Java/JavaScript polyglot" counts as its own language, in which case this is very competitive.

ETHproductions

1

@OlivierGrégoire I'm not saying this isn't a well-golfed polyglot submission, but it's debatable if there should be polyglot submissions to non-polyglot challenges in the first place. They came up as part of the Can serious contenders do more than the challenge asks for? discussion, but I don't think there's a clear consensus on this particular topic. Personally, I'm not in favor.

Dennis

3

@Dennis Thank you for your insights, I now understand what you meant. Should this answer be tagged as "non-competitive", according to you? On the other hand, while I'm not speaking for all polyglot answers (this is my first ever), this one has the special meaning that the challenge speaks about both Java and JavaScript, and that the "imaginary bonus points" were explicitly awarded for Java, JavaScript and regex answers before I wrote this answer. Java and regex can be combined, JavaScript and regex can be combined, why not all together? Anyways, I don't mind marking this as non-competitive.

Olivier Grégoire

17

JavaScript, 50 49 bytes

Saved 1 byte thanks to @ValueInk by rearranging the regex

a=>/javascript|^(?!java)/i.test(a)?"car":"carpet"

Test snippet

let f=

a=>/javascript|^(?!java)/i.test(a)?"carpet":"car"

var a=["java","javafx","javabeans","java-stream","java-script","java-8","java.util.scanner","java-avascript","javascript","javascript-events","facebook-javascript-sdk","javajavascript","jquery","python","rx-java","java-api-for-javascript","not-java"];

for(var s of a) console.log(s.padStart(a.reduce((x,y)=>x.length>y.length?x:y).length) + "=>" + f(s));

Expand snippet

Kritixi Lithos
fuente

I was going to steal your regex but that would have made my answer longer :o nice answer though

HyperNeutrino

Now we just need a java answer.

DJMcMayhem

We have a Java answer, but... I came to the roughly same regex...

Olivier Grégoire

alternatively: /^java(?!script)/i

Andrea

1

@OlivierGrégoire ah, damn, that one seems unfair

Andrea

15

Java (OpenJDK 8), 92 82 72 58 57 bytes

s->s.matches("(?i)(?!.*javascript)java.*")?"car":"carpet"

Try it online!

1 byte saved thanks to @Nevay!

Olivier Grégoire
fuente

1

You can omit the caret as String#matches attempts to match the entire string.

Nevay

11

C (only calling puts), 131 bytes

f(int*s){char r[]="carpet";~*s&'AVAJ'||(r[3]=0);for(;*s&255;*(int*)&s+=1)~*s&'AVAJ'||~s[1]&'IRCS'||~s[2]&'TP'||(r[3]='p');puts(r);}

It does have its problems, but it passes all of the testcases provided :)

g(int* s)
{
  char r[] = "carpet";
  ~*s&'AVAJ' || (r[3]=0);
  for(;*s & 255; *(int*)&s +=1)
    ~*s&'AVAJ' || ~s[1]&'IRCS' || ~s[2]&'TP' || (r[3]='p');
  puts(r);
}

Imaginary bonus points if your answer uses Java, Javascript, or Regex

well... no thanks

michi7x7
fuente

8

05AB1E, 21 bytes

lD'¦‚å≠sη'îáå*„¾„ƒ´#è

Try it online!

Erik the Outgolfer
fuente

2

lD“¦‚“åi“¾„“ë“îá“åi…carë 3 bytes more and 1 hour late :(. Nice job.

Magic Octopus Urn

8

Python 2, 68 bytes

k=input().lower();print'car'+'pet'*(k[:4]!='java'or'javascript'in k)

Try it online!

-11 bytes thanks to notjagan
-2 bytes thanks to Dennis

HyperNeutrino
fuente

11 bytes shorter.

notjagan

Slightly different 81 byte solution

Justin

@Justin That too. Nice.

HyperNeutrino

If you switch to Python 2, you can save 2 bytes with a full program.

Dennis

1

@LukeSawczak Oh I didn't even realize that :P I was using Java right before that and in Java ; is required so I since I have to use it anyway the newline is unnecessary :P That's why I used it.

HyperNeutrino

4

C#, 80 78 bytes

s=>(s=s.ToLower()).StartsWith("java")&!s.Contains("javascript")?"car":"carpet"

TheLethalCoder
fuente

1

I think the most readable language here is C#

sepehr

2

@sepehr You mean you see sharp with C#. (Do I get a bonus for dumb comments)

Ray

4

EXCEL Google Sheets, 89 86 Bytes

Saved 3 bytes thanks to Taylor Scott

=LEFT("carpet",6-3*ISERR(SEARCH("javascript",A1))+3*ISERR(IF(SEARCH("java",A1)=1,1,1/0

Takes an input on A1

Explanation

=LEFT("carpet",6-3*ISERR(SEARCH("javascript",A1))+3*ISERR(IF(SEARCH("java",A1)=1,1,1/0)))

 SEARCH("javascript",A1)        #Case-Insensitive Find, returns error if not found  
 ISERR(                         #Returns string true if error, False if not
 3*ISERR(                       #Forces TRUE/False as integer, multiplies by 3
 IF(SEARCH("java",A1)=1,1,1/0)  #If java found, returns integer. if 1, java begins string
                                #so returns 1, which will be turned into 0 by iserr.
                                #Else returns 1/0, which will be turned into 1 by iserr.
 LEFT(                          #Returns digits from the left, based upon count.

Mark
fuente

I believe that you can replace the Searches with Finds for -2 bytes and that that could be further translated to a google sheets formula for -3 bytes by not closing the last three parens

Taylor Scott

1

Find is case sensitive, search is case insensitive. But those last 3 bytes are a good idea!

Mark

Why the swap from Excel to Google Sheets?

Stevoisiak

2

Removing the last 3 parens saves 3 bytes. Excel would just throw an error and put them in for you anyways.

Mark

3

vim, 58 bytes

gUU:s/.*JAVASCRIPT.*/Q/g
:s/^JAVA.*/car
:s/[A-Z].*/carpet

Try it online!

Ray
fuente

I think using the g command might be a little shorter, something like :g/\cjavascript/d :g!/^\cjava/d icarpet␛:s/pet..*.

Neil

3

Jelly, 27 bytes

,“Ẋṣ“®Ẓȷ»ŒlwÐ€/Ḅn2‘×3“¢Ẹị»ḣ

Try it online!

Dennis
fuente

3

Ruby, 42+1 = 43 bytes

Uses the -p flag.

$_="car#{"pet"if~/javascript|^(?!java)/i}"

Try it online!

Value Ink
fuente

3

Retina, 44 37 bytes

Ai`^(?!.*javascript)java
.+
pet
^
car

Thanks to @MartinEnder for golfing off 7 bytes!

Try it online!

Dennis
fuente

3

Common Lisp, 131 125 bytes

(lambda(s)(format()"car~@[pet~]"(or(<(length s)4)(not(#1=string-equal"java"(subseq s 0 4)))(search"javascript"s :test'#1#))))

Try it online!

Size reduced thanks to the #n= “trick” of Common Lisp.

Explanation

(lambda (s)                 ; anonymous function
  (format                   ; use of format string to produce the result
    ()                      ; the result is a string
    "car~@[pet~]"           ; print "car", then print "pet" when:
    (or (< (length s) 4)    ; the string is less then 4 characters or
        (not (string-equal "java" (subseq s 0 4)))     ; does not start with java or
        (search "javascript" s :test 'string-equal)))) ; contains javascript

Renzo
fuente

2

C (tcc), 144 136 bytes

a;f(s){char*t=s;for(;*t;a=!strncmp(s,"java",4))*t=tolower(*t++);for(t=s;*t;)s=strncmp(t++,"javascript",10)&&s;puts(a*s?"car":"carpet");}

Try it online!

Unrolled:

a;
f(s)
{
    char *t = s;
    for (; *t; a = !strncmp(s, "java", 4))
        *t = tolower(*t++);
    for (t=s; *t;)
        s = strncmp(t++, "javascript", 10) && s;
    puts(a*s ? "car"  :"carpet");
}

Steadybox
fuente

1

Excel, 84 bytes

="car"&IF(AND(ISERR(SEARCH("javascript",A1)),IFERROR(SEARCH("java",A1),2)=1),,"pet")

Wernisch
fuente

1

Excel VBA, 76 Bytes

Anonymous VBE immediate window function that takes input from range [A1] and outputs is car/carpet status to the VBE immediate window

Does not use RegExp

?"car"IIf(InStr(1,[A1],"Java",1)*(InStr(1,[A1],"JavaScript",1)=0),"","pet")

Taylor Scott
fuente

1

Nice use of vba! I thought a macro would have been shorter. Now I have proof.

Mark

1

Python 3, 95 bytes

g=lambda s:(lambda r:'car' if r[:4]=='java' and 'javascript' not in r else 'carpet')(s.lower())

Try it online!

Yeah, it could be shorter but I wanted to try using a nested lambda!

Kavi
fuente

Always good to experiment :) Note that you can save bytes around operators like and, or, if, else

Luke Sawczak

1

Perl, 42 bytes

I believe the answer by stevieb has an incorrect output (tried that one myself - it returns car for 'javajavascript'). This should work:

say/^java/i&&!/javascript/i?'car':'carpet'

bytepusher
fuente

0

Mathematica, 82 bytes

regex

If[#~StringMatchQ~RegularExpression@"(?i)(?!.*javascript)^java.*","Car","Carpet"]&

J42161217
fuente

0

JAISBaL, 36 bytes

℠℘(?!.*javascript)^java.*}͵Ucar½Upet

Verbose/explanation:

# \# enable verbose parsing #\
tolower                           \# [0] convert the top value of the stack to lowercase #\
split (?!.*javascript)^java.*}    \# [1] split the top value of the stack by (?!.*javascript)^java.*} #\
arraylength                       \# [2] push the length of the array onto the stack #\
print3 car                        \# [3] print car #\
!if                               \# [4] if the top value on the stack is falsy, skip the next statement #\
print3 pet                        \# [5] print pet #\

JAISBaL was my first attempt at designing a golfing language, so it's rather quirky... there's no matches or contains, regex or otherwise, so instead we have to split and check the resulting array length... because JAISBaL has a split-by-regex... but no other regex support.... because reasons.

Regex ~~stolen~~ borrowed from @Cows Quack's answer.

Socratic Phoenix
fuente

0

Python 2, 69 bytes

f=input().lower().find
print'car'+'pet'*(f('java')!=~f('javascript'))

Currently 1 byte longer than the shortest Python 2 solution.

Try it online!

Dennis
fuente

0

Perl, 36 bytes

say/^java(?!script)/i?"car":"carpet"

Run it as such:

perl -nE 'say/^java(?!script)/i?"car":"carpet"' java.txt

stevieb
fuente

0

Batch, 91 bytes

@set/ps=
@set t=%s:~0,4%
@if "%t:java=%%s:javascript=%"=="%s%" (echo car)else echo carpet

Takes input on STDIN. Batch doesn't have a case insensitive comparison operator but it does have case insensitive string replacement so I can assign a temporary to the first four characters and then case insensitively replace java, which should then result in the empty string. Meanwhile I case insensitively replace javascript in the original string, which should leave it unchanged.

Neil
fuente

0

Lua, 96 bytes

function(x)return x:lower():match"^java"and not x:lower():match"javascript"and"car"or"carpet"end

IllidanS4 wants Monica back
fuente

0

Perl, 98 84 62 Bytes

sub a{"car".($_[0]=~/javascript/i||$_[0]!~/^java/i?'pet':'');}

Try it online!

Thanks to bytepusher

Burgan
fuente

Welcome to the site! I don't know any perl, but it looks like there is a lot of whitespace you could remove. Also, if you're looking for more ways to shorten it, there's a bunch of tips here.

DJMcMayhem

@DJMcMayhem Thank you, I think the entire logic can be changed to make it even shorter, but I haven't figured it out

Burgan

1

Just some hints (without changing your solution too much): You can replace the return $b; with just $b;. Perl always returns the last evaluated statement. Since we don't care about warnings, you can even drop the ';' to $b}. You don't need the brackets around the if. If you use || instead of or, you can save a whitespace after the regex.

bytepusher

1

You can also remove the () around the first lc, but need a space after if then. If you use !~ instead of ! =~ the second condition can be lc$_[0]!~. ` -> sub a{$b="car";$b.="pet"if lc$_[0]=~/javascript/||lc$_[0]!~/^java/;$b}. Using the ternary ops brings it down one more sub a{$b="car";$b.="pet"if lc$_[0]=~/javascript/||lc$_[0]!~/^java/;$b}

bytepusher

1

Not to forget - no need for lc when you have the regex ignore case switch, down another 2 :) $_[0] =~//i||$_[0]!~//i. And finally, why a variable? sub a{"car".($_[0]=~/javascript/i||$_[0]!~/^java/i?'pet':'');} should do fine :). And now: perl will be nice and let you use $_[0] w/o specifying it (though not with !~): sub a{"car".(/javascript/i||!/^java/i?'pet':'')} -> 48 :)

bytepusher

0

Dart VM, 104 bytes 102 bytes

main(p){p=p[0].toLowerCase();print("car${p.indexOf('java')==0&&p.indexOf('javascript')<0?'':'pet'}");}

Explanation:

Degolfed:

main(p)
{
    p = p[0].toLowerCase();
    print("car${p.indexOf('java') == 0 && p.indexOf('javascript') < 0 ? '' : 'pet'}");
}

We have our usual main function

We replace p with p[0].toLowerCase(); so that we don't have to declare a new variable (var plus a space would be 4 extra bytes)

We then proceed to do the actual printing

We print car unconditionally and we use inline statements for checking whether to print pet after it or not. If it has the string 'java' at index 0 and does not have 'javascript' in it, we do nothing (we actually append an empty string but it does not have any effect) and otherwise we append pet.

Ice Flake
fuente

0

Rust, 97 bytes

let s=if Regex::new(r"^javascript|^!java$").unwrap().is_match("javascript"){"carpet"}else{"car"};

I'm pretty sure that there is a shorter solution but it's my first try :)

f4bi4n
fuente

0

Bracmat, 66 bytes

(f=.pet:?b&@(low$!arg:(? javascript ?|java ?&:?b|?))&str$(car !b))

Try it online!

Bart Jongejan
fuente

Java es a JavaScript como Car es a Carpet

Introducción

Reto

Ejemplo de entrada y salida

coche:

alfombra:

Notas

Respuestas:

Java / JavaScript políglotas, 108 107 106 bytes

Ejecutar como Java

Ejecutar como JavaScript

JavaScript, 50 49 bytes

Test snippet

Java (OpenJDK 8), 92 82 72 58 57 bytes

C (only calling puts), 131 bytes

05AB1E, 21 bytes

Python 2, 68 bytes

C#, 80 78 bytes

EXCEL Google Sheets, 89 86 Bytes

Explanation

vim, 58 bytes

Jelly, 27 bytes

Ruby, 42+1 = 43 bytes

Retina, 44 37 bytes

Common Lisp, 131 125 bytes

C (tcc), 144 136 bytes

Excel, 84 bytes

Excel VBA, 76 Bytes

Python 3, 95 bytes

Perl, 42 bytes

Mathematica, 82 bytes

JAISBaL, 36 bytes

Python 2, 69 bytes

Perl, 36 bytes

Batch, 91 bytes

Lua, 96 bytes

Perl, 98 84 62 Bytes

Dart VM, 104 bytes 102 bytes

Rust, 97 bytes

Bracmat, 66 bytes