Sugar Free Syntax

Question

In Haskell the list notation:

[a,b,c]

Is just syntactic sugar for:

a:b:c:[]

And the string notation:

"abc"

Is just syntactic sugar for:

['a','b','c']

This means that the string:

"abc"

Is the same as:

'a':'b':'c':[]

Task

Given a string you should output what the de-syntaxed version would look like in Haskell.

Rules

You will receive a string by any valid input method, you should output a string ending with :[] with every character from the input surrounded by ' and separated by :. The empty string should output [].
You can assume that you will not receive any characters that require escaping (e.g. ', newlines, tabs ...) and that input will be in the printable ascii range
This is code-golf you should aim to minimize the byte count of your answer

Test Cases

"" -> []
"a" -> 'a':[]
"Hello, World" -> 'H':'e':'l':'l':'o':',':' ':'W':'o':'r':'l':'d':[]

Will the input ever have non-ascii values? Your restriction on characters that require escaping either requires we know which characters Haskell will escape or assumes your list is exhaustive. — FryAmTheEggman, Commented Jun 14, 2017 at 19:05
@totallyhuman Those are not even valid Haskell. If they were maybe, but nice they are not, definitely no. — Wheat Wizard, Commented Jun 14, 2017 at 20:43
@cairdcoinheringaahing No, " and ' are syntactically different. — Wheat Wizard, Commented Apr 9, 2018 at 17:32

Laikoni · Accepted Answer · 2017-06-14 19:37:08Z

88

Haskell, 26 bytes

(++"[]").((++":").show=<<)

Try it online!

Explanation:

In non-pointfree notation and using concatMap instead of =<<, this becomes

f s = concatMap(\c-> show c ++ ":")s ++ "[]"

Given a string s, we map each char c to a string "'c':" using the show function which returns a string representation of most Haskell types. Those strings are concatenated and a final [] is appended.

Although not requested by the challenge, this answer even works with proper escaping, because show takes care of it: f "'" yields "'\\'':[]".

edited Jun 14, 2017 at 19:37

answered Jun 14, 2017 at 19:21

Laikoni

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25

\$\begingroup\$ Wait a minute, you mean (++'[':']':[]).((++':':[]).show=<<), no? \$\endgroup\$
– Adám
Commented Jun 14, 2017 at 19:27
11

\$\begingroup\$ When any challenge has a Haskell answer, I upvote it out of principle. That goes double for this one. \$\endgroup\$
– Ryan Reich
Commented Jun 15, 2017 at 5:39

Add a comment |

nimi · Accepted Answer · 2017-06-15 00:45:35Z

45

Haskell, 33 28 26 bytes

foldr((.(':':)).shows)"[]"

Try it online!

fold the given pointfree function from the right into the input string starting with []. The function is: show char as a Haskell char, i.e. surrounded with ' and concatenate with the result so far after putting a : in front of it.

Edit: @Ørjan Johansen saved two bytes. Thanks!

edited Jun 15, 2017 at 0:45

answered Jun 14, 2017 at 19:21

nimi

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\$\begingroup\$ I suppose that means (++'[':']':[]).(>>= \c->'\'':[]++[c]++'\'':':':[]). \$\endgroup\$
– Adám
Commented Jun 14, 2017 at 19:31
1

\$\begingroup\$ I think this is superior to the other Haskell answer (at the same byte count) due to using : to build the list rather than ++, though both have their own elegance. \$\endgroup\$
– CAD97
Commented Jun 16, 2017 at 10:04
4

\$\begingroup\$ This is rather amazing. Two separate approaches that have the same byte count in the same language. \$\endgroup\$
– J Atkin
Commented Jun 17, 2017 at 19:52

Add a comment |

xnor · Accepted Answer · 2017-06-14 19:39:52Z

20

Python 3, 32 bytes

lambda s:"%r:"*len(s)%(*s,)+"[]"

Try it online!

answered Jun 14, 2017 at 19:39

xnor

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Downgoat · Accepted Answer · 2017-06-14 19:23:05Z

19

JavaScript ES6, 42 40 31 bytes

s=>s.replace(/./g,"'$&':")+"[]"

Replaces each char with '<char>':, then adds [] to the end

Try it online!

edited Jun 14, 2017 at 19:23

answered Jun 14, 2017 at 19:14

Downgoat

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1

\$\begingroup\$ I love this about CodeGolf. Never knew about $&. \$\endgroup\$
– Steve Bennett
Commented Jun 18, 2017 at 7:42

Add a comment |

Renzo · Accepted Answer · 2017-07-09 08:32:44Z

17

Common Lisp, 50 42 bytes

(format t"~{'~a':~}[]"(coerce(read)'list))

Try it online!

Reduced thanks to the comment of @coredump, by using read instead of defining a function.

edited Jul 9, 2017 at 8:32

answered Jun 15, 2017 at 8:31

Renzo

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1

\$\begingroup\$ Welcome to PPCG! \$\endgroup\$
– Martin Ender
Commented Jun 15, 2017 at 8:53
2

\$\begingroup\$ Lisp! Welcome indeed :) \$\endgroup\$
– Olivier Dulac
Commented Jun 15, 2017 at 13:47
\$\begingroup\$ @Renzo Hi Renzo, you could shrink it a little by using an anonymous lambda form, or simply calling read : (format t"~{'~a':~}[]"(coerce(read)'list)) (some other questions are stricter w.r.t. inputs and outputs, but here this is fine) \$\endgroup\$
– coredump
Commented Jun 18, 2017 at 13:04
\$\begingroup\$ @coredump, thanks!, I've updated the code. \$\endgroup\$
– Renzo
Commented Jun 18, 2017 at 13:08

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nmjcman101 · Accepted Answer · 2017-06-14 19:10:41Z

12

V, 11 bytes

Í./'&':
A[]

Try it online!

Uses a regex to surround every input character with '': and then Appends [] to the end.

answered Jun 14, 2017 at 19:10

nmjcman101

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Khaled.K · Accepted Answer · 2017-07-07 18:59:35Z

11

C, 55 54 53 bytes

s(char*h){while(*h)printf("'%c':",*h++);puts("[]");}

edited Jul 7, 2017 at 18:59

Khaled.K

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answered Jun 14, 2017 at 19:02

Govind Parmar

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1

\$\begingroup\$ you can remove the space in char *h \$\endgroup\$
– Cyoce
Commented Jun 14, 2017 at 19:24
1

\$\begingroup\$ You can do puts("[]"); instead to output with a trailing newline to save some bytes. \$\endgroup\$
– user41805
Commented Jun 14, 2017 at 19:29
\$\begingroup\$ recursive s(char*h){*h?printf("'%c':",*h++),s(h):puts("[]");} \$\endgroup\$
– l4m2
Commented Apr 9, 2018 at 2:59

Add a comment |

Rod · Accepted Answer · 2017-06-14 21:40:58Z

9

Python 3, 41 38 36 bytes

^{-2 bytes thanks to ovs}

print(*map(repr,input()),[],sep=':')

Try it online!

edited Jun 14, 2017 at 21:40

answered Jun 14, 2017 at 19:24

Rod

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\$\begingroup\$ Whoops... Forgot that *map exists... \$\endgroup\$
– Mr. Xcoder
Commented Jun 14, 2017 at 19:25
\$\begingroup\$ I was puzzled by the empty input() for the past 20 minutes (literally), when it could just be a lambda @.@ \$\endgroup\$
– Rod
Commented Jun 14, 2017 at 19:26
\$\begingroup\$ Empty input does work? \$\endgroup\$
– Wheat Wizard ♦
Commented Jun 14, 2017 at 19:38
\$\begingroup\$ @WheatWizard oh, I was using a empty-empty (no newline) input \$\endgroup\$
– Rod
Commented Jun 14, 2017 at 19:40
\$\begingroup\$ You can replace "[]" with [] \$\endgroup\$
– ovs
Commented Jun 14, 2017 at 21:08

Add a comment |

Riley · Accepted Answer · 2017-06-15 12:55:15Z

9

05AB1E, 15 12 11 10 bytes

-3 bytes thanks to carusocomputing
-1 byte thanks to Adnan
-1 byte thanks to Erik the Outgolfer's genius idea

ʒ"'ÿ':"?},

Try it online!

ʒ          # Filter out every character that the following code doesn't return 1 for
 "'ÿ':"?   #   Print the string 'ÿ': with ÿ replaced by this character
        }  # End for
         , # No character returned 1 so an empty array is left on the stack. Print that

edited Jun 15, 2017 at 12:55

answered Jun 14, 2017 at 19:00

Riley

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\$\begingroup\$ Apparently I beat you by 4 seconds ;-) \$\endgroup\$
– Digital Trauma
Commented Jun 14, 2017 at 19:01
1

\$\begingroup\$ @DigitalTrauma Yours popped up as I was pressing Post Your Answer. \$\endgroup\$
– Riley
Commented Jun 14, 2017 at 19:02
1

\$\begingroup\$ You can print the global array instead of pushing the brackets with 3 bytes. You can also interpolate the string for another byte savings for a total of -3, final result 12-bytes: vy"'ÿ':"?}¯? \$\endgroup\$
– Magic Octopus Urn
Commented Jun 14, 2017 at 19:43
\$\begingroup\$ @carusocomputing I use the string interpolator all the time for test suites, but forget to use it in actual code. Thanks! \$\endgroup\$
– Riley
Commented Jun 14, 2017 at 19:51
\$\begingroup\$ @carusocomputing I thought vy"'ÿ':"}¯J would work for 11, but J joins the global array, not the whole stack in that situation. \$\endgroup\$
– Riley
Commented Jun 14, 2017 at 19:57

Add a comment |

Community · Accepted Answer · 2020-06-17 09:04:33Z

9

R, 51 bytes

f<-function(x)(paste0(gsub("(.)","'\\1':",x),'[]'))

edited Jun 17, 2020 at 9:04

CommunityBot

1

answered Jun 16, 2017 at 12:50

t c

912 bronze badges

1

\$\begingroup\$ Nice solution! A few ways you can save some bytes and really get this down. default I/O lets you just return an anonymous function, or even take input from stdin, the latter of which would be much shorter using scan(,'') instead of a function. \$\endgroup\$
– Giuseppe
Commented Jun 16, 2017 at 14:38
\$\begingroup\$ Thanks, am a bit of a newb with R (and code golf!) so haven't quite grasped anonymous functions in it yet, although I was trying to do it without 'function' in there. scan could be useful! \$\endgroup\$
– t c
Commented Jun 16, 2017 at 15:37
\$\begingroup\$ ah, well an anonymous function is just one where you don't assign it to a variable so you'd just drop the f<- from the beginning of your code \$\endgroup\$
– Giuseppe
Commented Jun 16, 2017 at 15:39
\$\begingroup\$ paste0(gsub('(.)',"'\\1':",scan(,"")),'[]') is 43 \$\endgroup\$
– Zahiro Mor
Commented Jun 18, 2017 at 8:45

Add a comment |

Community · Accepted Answer · 2020-06-17 09:04:33Z

9

Pyth, 14 10 8 bytes

j\:a`MQY

Try this!

-2 bytes thanks to @isaacg

Finally, pyth is good at something.

explanation

j\:a`MQY
    `MQ        # map the representation over the input string: ["'a'","'b'",...]
   a   Y       # append the empty list
j\:            # join on :

edited Jun 17, 2020 at 9:04

CommunityBot

1

answered Jun 14, 2017 at 19:22

KarlKastor

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\$\begingroup\$ @isaacg Thank you! I forgot about M and I don't know why I didn't use a. Now we're at least 2 bytes shorter than all the other solutions here! \$\endgroup\$
– KarlKastor
Commented Jun 16, 2017 at 8:20

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Community · Accepted Answer · 2020-06-17 09:04:33Z

8

Retina, 12

3 bytes saved thanks to @FryAmTheEggman

.
'$&':
$
[]

2 stages:

for each remaining character put ' ': around it
add [] to the end

Try it online.

edited Jun 17, 2020 at 9:04

CommunityBot

1

answered Jun 14, 2017 at 19:00

Digital Trauma

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\$\begingroup\$ Helped the guy you beat by 4 seconds tie you ;). \$\endgroup\$
– Magic Octopus Urn
Commented Jun 14, 2017 at 19:45
\$\begingroup\$ I was thinking of this! \$\endgroup\$
– CalculatorFeline
Commented Jun 18, 2017 at 16:43

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Sean · Accepted Answer · 2017-06-14 19:03:06Z

7

Perl 6, 19 bytes

{S:g|.|'$/':|~'[]'}

answered Jun 14, 2017 at 19:03

Sean

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totallyhuman · Accepted Answer · 2017-06-14 19:35:48Z

7

Python 2, 48 46 44 37 bytes

-2 bytes thanks to Rod. -7 bytes thanks to Wheat Wizard.

lambda s:':'.join(map(repr,s)+['[]'])

Try it online!

edited Jun 14, 2017 at 19:35

answered Jun 14, 2017 at 19:02

totallyhuman

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1

\$\begingroup\$ Slightly shorter \$\endgroup\$
– Wheat Wizard ♦
Commented Jun 14, 2017 at 19:19
1

\$\begingroup\$ One shorter as lambda s:':'.join(map(repr,[*s,[]])) or lambda s:':'.join(map(repr,s))+":[]". \$\endgroup\$
– xnor
Commented Jun 14, 2017 at 19:52
\$\begingroup\$ @xnor The second example you give doesn't seem to work for the empty case. (the original answer looked very similar to that but paid a lot to cover the empty string case) \$\endgroup\$
– Wheat Wizard ♦
Commented Jun 15, 2017 at 3:28

Add a comment |

score 7 · Accepted Answer · 2017-06-15 17:41:22Z

7

Befunge, 29 27 bytes

<,,,,\_v#`0:~"'':"
@,,"[]"<

Try it online!

edited Jun 15, 2017 at 17:41

answered Jun 15, 2017 at 17:32

user55852

Add a comment |

Community · Accepted Answer · 2020-06-17 09:04:33Z

7

JavaScript (ES6), 36 bytes

s=>s?`'${[...s].join`':'`}':[]`:"[]"

Try it

f=
s=>s?`'${[...s].join`':'`}':[]`:"[]"
oninput=_=>o.innerText=f(i.value);o.innerText=f(i.value="abc")

<input id=i><pre id=o>

edited Jun 17, 2020 at 9:04

CommunityBot

1

answered Jun 14, 2017 at 19:36

Shaggy

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Jonathan Allan · Accepted Answer · 2018-12-03 21:48:32Z

Jelly, 11 10 8 bytes

-1 byte thanks to Christian (remove concatenation ; and utilise implicit printing instead)

+0 bytes (fixed for edge case of an empty string - previously the full program: ŒṘ€j”:“:[])

-2 thanks to Erik the Outgolfer (use p in place of ;€ since ”: is effectively length 1; use Ø[ since it has become shorthand for ⁾[])

ŒṘ€p”:Ø[

Try it online!

A full program printing the result (as a link it returns a list of lists of characters).

...but is there a way to save using STDIN?

How?

ŒṘ€p”:Ø[ - Main link: list of characters, s  e.g. "Hey"
ŒṘ€      - Python representation for €ach    [["'",'H',"'"],["'",'e',"'"],["'",'y',"'"]]
    ”:   - literal character = ':'
   p     - Cartesian product                 [["'",'H',"'",':'],["'",'e',"'",':'],["'",'y',"'",':']]
         - implicit print (no newline): 'H':'e':'y':
      Ø[ - literal list of characters        ['[',']']
         - implicit print (no newline): []

Dada · Accepted Answer · 2017-06-14 19:59:56Z

5

Perl 5, 22 bytes

19 bytes of code + -p flag.

s/./'$&':/g;$\="[]"

Or, for the same bytecount, s/./'$&':/g;s/$/[]/.

Quite straight forward: s/./'$&':/g surrounds each characters with quotes and add a : after. $\ is implicitly printed after each print, so setting it to [] outputs the final [].

Try it online!

answered Jun 14, 2017 at 19:59

Dada

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Jörg Hülsermann · Accepted Answer · 2017-06-14 19:51:56Z

4

PHP, 41 bytes

<?=preg_filter("#.#","'$0':",$argn)."[]";

Try it online!

answered Jun 14, 2017 at 19:51

Jörg Hülsermann

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\$\begingroup\$ 4 bytes shorter: for(;~$c=$argn[$i++];)echo"'$c':"?>[]. \$\endgroup\$
– user63956
Commented Jun 15, 2017 at 1:31
\$\begingroup\$ @user63956 need it not a additional <? with which option must it be run? Make an own approach I would say to get upvotes and titus have done something similar in the meantime \$\endgroup\$
– Jörg Hülsermann
Commented Jun 15, 2017 at 10:41
\$\begingroup\$ It works with the -R flag. Tags can be closed even in constructions like eval() and create_function(). \$\endgroup\$
– user63956
Commented Jun 15, 2017 at 12:05

Add a comment |

marcelovca90 · Accepted Answer · 2017-06-15 13:22:56Z

4

Java (OpenJDK 8), 86 83 76 bytes

-3 bytes thanks to @KevinCruijssen
-7 bytes thanks to @FlorianSchaetz

s->{String b="";for(char c:s.toCharArray()){b+="'"+c+"':";};return b+"[]";};

Try it online!

edited Jun 15, 2017 at 13:22

answered Jun 15, 2017 at 3:18

marcelovca90

4233 silver badges9 bronze badges

\$\begingroup\$ You can drop 4 bytes. The trailing ; doesn't have to be counted for lambda answers, the ; after the } isn't necessary at all, and the { and } can be removed around the for-loop. And you could save 4 more bytes in Java 10 changing both the String and char to var. \$\endgroup\$
– Kevin Cruijssen
Commented Apr 11, 2018 at 9:56

Add a comment |

daniero · Accepted Answer · 2017-06-16 05:24:34Z

4

brainfuck, 68 bytes

+[-->+[<]>-]>>,[<.>.<.>>-[>+<+++++++++]>+.[-]<<,]-[+[+<]>>+]<+++.++.

Try it online!

edited Jun 16, 2017 at 5:24

answered Jun 14, 2017 at 22:17

daniero

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\$\begingroup\$ Doesn't quite work with the empty string - returned me two non-valid characters in your online test. Very nice, otherwise. \$\endgroup\$
– NoseKnowsAll
Commented Jun 15, 2017 at 17:57
\$\begingroup\$ @NoseKnowsAll I can't seem to replicate that; With no input I get no output. Could you provide an updated link with that input? \$\endgroup\$
– daniero
Commented Jun 15, 2017 at 18:17
\$\begingroup\$ This is what I got when I run it: . With an empty input, it should be returning "[]" without the quotes. \$\endgroup\$
– NoseKnowsAll
Commented Jun 15, 2017 at 18:21
\$\begingroup\$ @NoseKnowsAll Your link goes to the "hello world" input (get an updated link by pressing that link/chain button), but yes, I get what you mean. I'll look into that \$\endgroup\$
– daniero
Commented Jun 15, 2017 at 18:24
1

\$\begingroup\$ @NoseKnowsAll There you go, I fixed it ;) \$\endgroup\$
– daniero
Commented Jun 15, 2017 at 19:10

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Wheat Wizard · Accepted Answer · 2017-06-15 18:16:18Z

3

Brain-Flak, 135, 131 bytes

{({}<>)<>}(((((((()()()()()){})){}{}())){}{})[()()])<>{<>(((((((()()()){}()){}){}()){})[(((()()()){})){}{}()])<>)({}<({}<>)>)<>}<>

Try it online!

+1 byte for the -c flag.

Thanks to WheatWizard for removing very obvious NOOPs that I had for no reason XD.

edited Jun 15, 2017 at 18:16

Wheat Wizard♦

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answered Jun 14, 2017 at 20:06

DJMcMayhem

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\$\begingroup\$ @WheatWizard >_> Yeah, I was just testing you... Hahaha, thanks for pointing that out. I'll try to golf it more later, but I'll add that now lol \$\endgroup\$
– DJMcMayhem
Commented Jun 15, 2017 at 18:14

Add a comment |

musicman523 · Accepted Answer · 2017-06-23 14:18:24Z

3

Standard ML, 52 50 bytes

Saved 2 bytes thanks to @Laikoni!

fn s=>String.translate(fn c=>"'"^str c^"':")s^"[]"

Try it online!

String.translate is an unfortunately long name, but was 5 bytes shorter than using concat, map, and explode.

edited Jun 23, 2017 at 14:18

answered Jun 15, 2017 at 15:01

musicman523

4,7721 gold badge25 silver badges61 bronze badges

\$\begingroup\$ @Laikoni thanks! I always forget that operators have lower precedence than functions. \$\endgroup\$
– musicman523
Commented Jun 23, 2017 at 14:17

Add a comment |

Giuseppe · Accepted Answer · 2017-09-07 13:50:28Z

3

Cubix, 31 29 bytes

uo@[)o'U);!A?ro;o;o;os:'/u:''

A can also be substituted for i; ~~trying to figure out if there's a good way to squeeze another byte or two out of this.~~ -2 bytes thanks to MickyT! Also outgolfed by MickyT!

Fits on a 3x3x3 cube:

      u o @
      [ ) o
      ' U )
; ! A ? r o ; o ; o ; o
s : ' / u : ' ' . . . .
. . . . . . . . . . . .
      . . .
      . . .
      . . .

Watch it online!

Try it online!

edited Sep 7, 2017 at 13:50

answered Jun 15, 2017 at 13:26

Giuseppe

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\$\begingroup\$ You can save a couple of bytes, by using a couple of increments for the last bracket. This allows the bottom line to be compressed a bit uo@[)o'U);!A?ro;o;o;os:'/u:'' \$\endgroup\$
– MickyT
Commented Jun 15, 2017 at 20:56

Add a comment |

Rod · Accepted Answer · 2017-06-14 19:02:36Z

2

Python 2, 47 bytes

lambda a:`list(a)+[[]]`.replace(', ',':')[1:-1]

Try it online!

answered Jun 14, 2017 at 19:02

Rod

18.4k4 gold badges31 silver badges89 bronze badges

\$\begingroup\$ I had the same approach but I didn't figure out the [1:-1] part so it was longer than totallyhumans. +1 \$\endgroup\$
– Wheat Wizard ♦
Commented Jun 14, 2017 at 19:04
\$\begingroup\$ Strange that the trivial solution is just 3 bytes longer (in Python 3). \$\endgroup\$
– Mr. Xcoder
Commented Jun 14, 2017 at 19:18

Add a comment |

Adám · Accepted Answer · 2017-06-14 19:20:36Z

2

APL (Dyalog), 21 19 bytes

'[]',⍨'.'⎕R'''&'':'

Try it online!

'[]',⍨ the brackets appended to

'.' every character

⎕R PCRE Replaced with

'''&'':' a quote, the match, a quote and a colon

edited Jun 14, 2017 at 19:20

answered Jun 14, 2017 at 19:15

Adám

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Una · Accepted Answer · 2017-06-14 20:46:03Z

2

sed, 19 18 bytes

-1 byte thanks to Jordan

s/./'&':/g;s/$/[]/

Try it online!

edited Jun 14, 2017 at 20:46

answered Jun 14, 2017 at 20:08

Una

6583 silver badges7 bronze badges

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Community · Accepted Answer · 2020-06-17 09:04:33Z

2

PHP, 39 bytes

<?while(~$c=$argn[$i++])echo"'$c':"?>[]

Run as pipe with -F.

edited Jun 17, 2020 at 9:04

CommunityBot

1

answered Jun 15, 2017 at 3:52

Titus

14.8k1 gold badge24 silver badges41 bronze badges

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GamrCorps · Accepted Answer · 2017-06-15 06:39:56Z

2

Convex, 10 bytes

{`':`}%"[]

Try it online!

answered Jun 15, 2017 at 6:39

GamrCorps

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MickyT · Accepted Answer · 2017-06-15 21:09:19Z

Cubix, 27 bytes

uosW?U.iv":'"^soso;os@o[]'/

Try it online!

      u o s
      W ? U
      . i v
" : ' " ^ s o s o ; o s
@ o [ ] ' / . . . . . .
. . . . . . . . . . . .
      . . .
      . . .
      . . .

Watch it run

A slightly different variation from Guiseppe's answer. This puts the colon and quote on the stack. Then it loops through the input, swapping and outputting the stack. Only the input is scrapped and the colon and quote are retained.

Once the end of the input is reached the IP wonders around the cube a bit, adding and outputting the brackets. There are a couple of redundant commands in the mix.

Sugar Free Syntax

Task

Rules

Test Cases

85 Answers 85

Haskell, 26 bytes

Haskell, 33 28 26 bytes

Python 3, 32 bytes

JavaScript ES6, 42 40 31 bytes

Common Lisp, 50 42 bytes

V, 11 bytes

C, 55 54 53 bytes

Python 3, 41 38 36 bytes

05AB1E, 15 12 11 10 bytes

R, 51 bytes

Pyth, 14 10 8 bytes

explanation

Retina, 12

Perl 6, 19 bytes

Python 2, 48 46 44 37 bytes

Befunge, 29 27 bytes

JavaScript (ES6), 36 bytes

Try it

Jelly, 11 10 8 bytes

How?

Perl 5, 22 bytes

PHP, 41 bytes

Java (OpenJDK 8), 86 83 76 bytes

brainfuck, 68 bytes

Brain-Flak, 135, 131 bytes

Standard ML, 52 50 bytes

Cubix, 31 29 bytes

Python 2, 47 bytes

APL (Dyalog), 21 19 bytes

sed, 19 18 bytes

PHP, 39 bytes

Convex, 10 bytes

Cubix, 27 bytes

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