Full Width Text

Question

Full width text is text that has a space after every character, including the last one. For instance, the first sentence of this question becomes:

F u l l w i d t h t e x t i s t e x t t h a t h a s a s p a c e a f t e r e v e r y c h a r a c t e r , i n c l u d i n g t h e l a s t o n e . 

Write a program that takes a line in text from standard input and outputs it as full-width text to standard out.

Leaderboard

var QUESTION_ID=75979,OVERRIDE_USER=52353;function answersUrl(e){return"https://api.stackexchange.com/2.2/questions/"+QUESTION_ID+"/answers?page="+e+"&pagesize=100&order=desc&sort=creation&site=codegolf&filter="+ANSWER_FILTER}function commentUrl(e,s){return"https://api.stackexchange.com/2.2/answers/"+s.join(";")+"/comments?page="+e+"&pagesize=100&order=desc&sort=creation&site=codegolf&filter="+COMMENT_FILTER}function getAnswers(){jQuery.ajax({url:answersUrl(answer_page++),method:"get",dataType:"jsonp",crossDomain:!0,success:function(e){answers.push.apply(answers,e.items),answers_hash=[],answer_ids=[],e.items.forEach(function(e){e.comments=[];var s=+e.share_link.match(/\d+/);answer_ids.push(s),answers_hash[s]=e}),e.has_more||(more_answers=!1),comment_page=1,getComments()}})}function getComments(){jQuery.ajax({url:commentUrl(comment_page++,answer_ids),method:"get",dataType:"jsonp",crossDomain:!0,success:function(e){e.items.forEach(function(e){e.owner.user_id===OVERRIDE_USER&&answers_hash[e.post_id].comments.push(e)}),e.has_more?getComments():more_answers?getAnswers():process()}})}function getAuthorName(e){return e.owner.display_name}function process(){var e=[];answers.forEach(function(s){var r=s.body;s.comments.forEach(function(e){OVERRIDE_REG.test(e.body)&&(r="<h1>"+e.body.replace(OVERRIDE_REG,"")+"</h1>")});var a=r.match(SCORE_REG);a&&e.push({user:getAuthorName(s),size:+a[2],language:a[1],link:s.share_link})}),e.sort(function(e,s){var r=e.size,a=s.size;return r-a});var s={},r=1,a=null,n=1;e.forEach(function(e){e.size!=a&&(n=r),a=e.size,++r;var t=jQuery("#answer-template").html();t=t.replace("{{PLACE}}",n+".").replace("{{NAME}}",e.user).replace("{{LANGUAGE}}",e.language).replace("{{SIZE}}",e.size).replace("{{LINK}}",e.link),t=jQuery(t),jQuery("#answers").append(t);var o=e.language;/<a/.test(o)&&(o=jQuery(o).text()),s[o]=s[o]||{lang:e.language,user:e.user,size:e.size,link:e.link}});var t=[];for(var o in s)s.hasOwnProperty(o)&&t.push(s[o]);t.sort(function(e,s){return e.lang>s.lang?1:e.lang<s.lang?-1:0});for(var c=0;c<t.length;++c){var i=jQuery("#language-template").html(),o=t[c];i=i.replace("{{LANGUAGE}}",o.lang).replace("{{NAME}}",o.user).replace("{{SIZE}}",o.size).replace("{{LINK}}",o.link),i=jQuery(i),jQuery("#languages").append(i)}}var ANSWER_FILTER="!t)IWYnsLAZle2tQ3KqrVveCRJfxcRLe",COMMENT_FILTER="!)Q2B_A2kjfAiU78X(md6BoYk",answers=[],answers_hash,answer_ids,answer_page=1,more_answers=!0,comment_page;getAnswers();var SCORE_REG=/<h\d>\s*([^\n,]*[^\s,]),.*?(\d+)(?=[^\n\d<>]*(?:<(?:s>[^\n<>]*<\/s>|[^\n<>]+>)[^\n\d<>]*)*<\/h\d>)/,OVERRIDE_REG=/^Override\s*header:\s*/i;

body{text-align:left!important}#answer-list,#language-list{padding:10px;width:290px;float:left}table thead{font-weight:700}table td{padding:5px}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <link rel="stylesheet" type="text/css" href="//cdn.sstatic.net/codegolf/all.css?v=83c949450c8b"> <div id="answer-list"> <h2>Leaderboard</h2> <table class="answer-list"> <thead> <tr><td></td><td>Author</td><td>Language</td><td>Size</td></tr></thead> <tbody id="answers"> </tbody> </table> </div><div id="language-list"> <h2>Winners by Language</h2> <table class="language-list"> <thead> <tr><td>Language</td><td>User</td><td>Score</td></tr></thead> <tbody id="languages"> </tbody> </table> </div><table style="display: none"> <tbody id="answer-template"> <tr><td>{{PLACE}}</td><td>{{NAME}}</td><td>{{LANGUAGE}}</td><td>{{SIZE}}</td><td><a href="{{LINK}}">Link</a></td></tr></tbody> </table> <table style="display: none"> <tbody id="language-template"> <tr><td>{{LANGUAGE}}</td><td>{{NAME}}</td><td>{{SIZE}}</td><td><a href="{{LINK}}">Link</a></td></tr></tbody> </table>

• wizzwizz4: Usually you should allow functions too, or you exclude a lot of languages (e.g. JavaScript).
• Dennis: We have a few defaults for I/O that are based on community consensus. While you are entitled to override them, insisting on STDIN/STDOUT for I/O invalidates a bunch of answers (which assumed that the defaults apply) and make the task downright impossible in other languages (they don't have standard streams).
• BlueRaja - Danny Pflughoeft: That is not what fullwidth text is.
• Ludovic Frérot: @BlueRaja-DannyPflughoeft is right. Full Width text is about underlying character encoding ( 2 bytes encoded ) required by some language ( i.e. ideograms ). In Unicode the notion of half and full size is called Unicode block
• Erik the Outgolfer: @LudovicFrérot Actually, these are not ideograms, these are chinese english letters.

Answer 1

Go, (削除) 154 (削除ここまで) 120 bytes

package main
import(
."fmt"
."os"
."strings")
func main(){s:=Join(Args[1:], " ")
for _,c:=range s{Print(string(c)," ")}}

Saved a few bytes with command line args.

Answer 2

LiveScript, 17.

->"#{it/''*' '} "

Answer 3

Scala, 35 bytes

Console.readLine.map(_+" ")mkString

Example:

scala> Console.readLine.map(_+" ")mkString
res1: String = "H e l l o S c a l a ! "

PS. A function would be slightly shorter (32 bytes):

(s:String)=>s.map(_+" ")mkString

Answer 4

Grond, (削除) 22 (削除ここまで) 21 chars

a(p().sp('').jn(' '))

Edit: removed semicolon
compiler in js below

String.prototype.reverse = function() {
 return this.split("").reverse().join("");
}
function compile(source){
var wc = source; // wc stands for working copy 
var lastWC;
while (true) {
 lastWC = wc;
 wc = wc.reverse();
 wc = wc.replace(/\(a(?!\w)/, "(trela"); //alert ,a
 wc = wc.replace(/\(f(?!\w)/, "(rof"); // for, f
 wc = wc.replace(/\(w(?!\w)/, "(elihw"); //while,w
 wc = wc.replace(/\(p(?!\w)/, "(tpmorp"); //prompt,p
 wc = wc.replace(/\(vr\./, "(esrever."); //reverse, rv
 wc = wc.replace(/\(tm\./, "(chtam."); // match, mt
 wc = wc.replace(/\(nj\./, "(nioj."); //join, .jn
 wc = wc.replace(/\(pr\./, "(ecalper."); //replace, .rp
 wc = wc.replace(/\(ls\./, "(.ecils"); //slice, sl
 wc = wc.replace(/\(lt\./, "(esaCrewoLot."); //toLowerCase, tl
 wc = wc.replace(/\(ut\./, "(esaCreppUot."); //toUpperCase, tu
 wc = wc.replace(/\(ps\./, "(tilps."); //split, sp
 wc = wc.reverse();
 wc = wc.replace(/\.l(?!\w)/, ".length"); // .length, .l
 if (lastWC === wc)
 break;
}
// quine builtin commented out because it messes things up TODO: Fix it. 
wc = " String.prototype.la=function(h){var x=this.split(''); x[h] = x[h].toLowerCase(); return x.join('');};String.prototype.ca=function(h){var x=this.split(''); x[h] = x[h].toUpperCase(); return x.join('');};String.prototype.reverse=function(){return this.split('').reverse().join('');}; \n var h = ['hello, world', 'Hello, World', 'Hello, World!', 'hello, world!', 'hello world', 'hello world!', 'Hello World', 'Hello World!', 'Hello, world.', 'Hello, World.' ,'hello world.' , 'Hello World.']; /* var q ='" + source + "';*/ " + wc;
return wc;
 }
eval(compile("a(p().sp('').jn(' '));"));//source

Grond on github: https://github.com/epicTCK/Grond

Answer 5

Ruby, 41 bytes

puts gets.chomp.chars.map{|e|e+" "}.join

chomp eats trailing newlines.

• manatwork: There is no requirement to output the whole result at once. If you output it piece-by-piece, you can spare the .join call. Even more, if you not need to return the pieces from the code block, then you can spare the .map call too, as .chars also accepts code block. And there is no restriction against adding a space after the trailing newline too, if there is one. gets.chars{|e|$><<e+" "}

Answer 6

Mathematica, 42 bytes

Print@@(#<>" "&)/@Characters@InputString[]

Pretty self-explanatory. InputString takes a line from STDIN, Characters converts it to a list of characters, (#<>" "&)/@ produces a new string with spaces after those characters, and Print prints the result.

Answer 7

Nim, 41 bytes

for c in stdin.readAll:stdout.write c&' '

I sure hope there's a better way, but readChar didn't seem to help...

Ideone link

Answer 8

Reng v.1.2, 15 bytes

Try it out here! The input is given as "input".

ai p|$raoWo?!|~

a is a one-way mirror from the left. ai p| gets all input, $ drops the residual -1 not found input, r reverses the stack, and aoWo?!|~ is an output loop. W pushes 32, the space, and outputs it after outputting the character. ?! breaks out if not true, and ~ ends the program.

Answer 9

Jolf, 7 bytes

Try it here!

p4i*li♣
p4 interweave
 i the input
 *li♣ with a string of spaces with = length to the input

Answer 10

RETURN, 10 bytes

`"" ̈{' °},

Try it here.

Takes input from STDIN. It's just take STDIN, split along chars, join with space, output.

Answer 11

Clojure, 34 bytes

#(apply str(mapcat(fn[x][x" "])%))

Clojure is amazingly fun to work with but annoying to golf. Usually there's a really nice idiomatic solution to these challenges that isn't that many identifiers, but it's massive thanks to things like the identity function being identity (not fully golfed in these forms):

(defn fw [s] (apply str (interleave s (repeat " "))))

or

(defn fw [s] (apply str (mapcat (juxt identity (constantly " ")) s)))

Answer 12

Convex, 3 bytes

Convex is a new language that I am developing that is heavily based on CJam and Golfscript. The interpreter and IDE can be found here. Input is an integer into the command line arguments. Indexes are one-based. Uses the CP-1252 encoding.

S*S

Explanation:

 # Implied input
S* # Join by spaces
 S # Add a space at the end
 # Implied output

Additionally, @DonMuesli's CJam answer without the l (so Sf+) will also work for 3 bytes.

• CalculatorFeline: Update this post later?
• GamrCorps: @CatsAreFluffy oh, my bad, I forgot, will do now.

Answer 13

O 1.2, 6 bytes

I' ]^o

Sample run:

bash-4.3$ java xyz.jadonfowler.o.O <(echo "I' ]^o") <<< 'Full width text.'
F u l l w i d t h t e x t . 

This could be 5 characters in O 2 as IT]^o, but sadly it not seems to fully support the ^ command yet.

Answer 14

Perl 5, (削除) 11 (削除ここまで) 10 + 1 flags = 11 bytes

really, the same as the Perl 6 one, but the sed syntax changed.

s/./$& /g

example:

perl -pe "s/./$& /g" <<< abc

(削除) old:

perl -pne "s/(.)/1円 /g" <<< abc

(削除ここまで)

• Neil: Can you save a byte by using s/./$& /gp?
• Doorknob: The -n flag is unnecessary, isn't it?
• Dom Hastings: @Doorknob is indeed correct, you can omit -p, also, how flexible is the output format? If a leading space is acceptable s// /g works too!
• Ven: I don't think I'm allowed to have a leading space :). Thanks @Doorknob

Answer 15

ESMin, 5 chars / 7 bytes

ᴉü⬭+⬭

Try it here (Firefox only).

Short and sweet. Get input split along chars and join with space.

• Conor O'Brien: This doesn't produce a trailing space.
• Mama Fun Roll: I think I fixed it, but I'm on my phone.

Answer 16

PowerShell, 32 bytes

-join([char[]]$args[0]|%{"$_ "})

---

Explanation

Take in the input to the function and convert it to a char array. Add one space to each character and rejoin. Nothing really fancy here.

• AdmBorkBork: Save a couple bytes by just joining it directly and encapsulating in a script block in a string -- "$([char[]]$args[0]-join' ') "

Answer 17

Prelude, 11 bytes

?(!8^+^+!?)

This needs a spec-compliant interpreter which reads and writes character codes (instead of integers).

The program is fairly simple.

?(...?)

This sets up a while(read() != EOF) loop. Then we simply have:

! Print input character.
8 Push 8.
^+ Duplicate, add. Gives 16.
^+ Duplicate, add. Gives 32.
! Print space.

Answer 18

Pip, 5 bytes

_.sMq

The special variable q reads a line of stdin. We Map to it the lambda function _.s, which concatenates a space to each character. By default, the resulting list is concatenated and autoprinted.

Answer 19

Ouroboros, 11 bytes

i.0<5*(o32o

Ouroboros is an esolang in which every line of code represents a snake eating its tail. It draws a fair amount of inspiration from 2D languages like Befunge and><>.

The i command reads a character, or -1 for EOF. We duplicate this, check if it's less than 0, and multiply the resulting 1 (true) or 0 (false) by 5.

• If we have reached EOF, the top of the stack is now 5. The ( command tells the snake to eat that many characters of its tail. This results in swallowing the execution pointer (currently on (, the fifth-last character), which terminates the program.
• Otherwise, 0 characters are eaten, and execution continues. We have a copy of the input ASCII code on the stack, which we output via o; then output a space (ASCII 32) and loop back to the beginning.

Try it out

// Define Stack class
function Stack() {
 this.stack = [];
 this.length = 0;
}
Stack.prototype.push = function(item) {
 this.stack.push(item);
 this.length++;
}
Stack.prototype.pop = function() {
 var result = 0;
 if (this.length > 0) {
 result = this.stack.pop();
 this.length--;
 }
 return result;
}
Stack.prototype.top = function() {
 var result = 0;
 if (this.length > 0) {
 result = this.stack[this.length - 1];
 }
 return result;
}
Stack.prototype.toString = function() {
 return "" + this.stack;
}
// Define Snake class
function Snake(code) {
 this.code = code;
 this.length = this.code.length;
 this.ip = 0;
 this.ownStack = new Stack();
 this.currStack = this.ownStack;
 this.alive = true;
 this.wait = 0;
 this.partialString = this.partialNumber = null;
}
Snake.prototype.step = function() {
 if (!this.alive) {
 return null;
 }
 if (this.wait > 0) {
 this.wait--;
 return null;
 }
 var instruction = this.code.charAt(this.ip);
 var output = null;
 console.log("Executing instruction " + instruction);
 if (this.partialString !== null) {
 // We're in the middle of a double-quoted string
 if (instruction == '"') {
 // Close the string and push its character codes in reverse order
 for (var i = this.partialString.length - 1; i >= 0; i--) {
 this.currStack.push(this.partialString.charCodeAt(i));
 }
 this.partialString = null;
 } else {
 this.partialString += instruction;
 }
 } else if (instruction == '"') {
 this.partialString = "";
 } else if ("0" <= instruction && instruction <= "9") {
 if (this.partialNumber !== null) {
 this.partialNumber = this.partialNumber + instruction; // NB: concatenation!
 } else {
 this.partialNumber = instruction;
 }
 next = this.code.charAt((this.ip + 1) % this.length);
 if (next < "0" || "9" < next) {
 // Next instruction is non-numeric, so end number and push it
 this.currStack.push(+this.partialNumber);
 this.partialNumber = null;
 }
 } else if ("a" <= instruction && instruction <= "f") {
 // a-f push numbers 10 through 15
 var value = instruction.charCodeAt(0) - 87;
 this.currStack.push(value);
 } else if (instruction == "$") {
 // Toggle the current stack
 if (this.currStack === this.ownStack) {
 this.currStack = this.program.sharedStack;
 } else {
 this.currStack = this.ownStack;
 }
 } else if (instruction == "s") {
 this.currStack = this.ownStack;
 } else if (instruction == "S") {
 this.currStack = this.program.sharedStack;
 } else if (instruction == "l") {
 this.currStack.push(this.ownStack.length);
 } else if (instruction == "L") {
 this.currStack.push(this.program.sharedStack.length);
 } else if (instruction == ".") {
 var item = this.currStack.pop();
 this.currStack.push(item);
 this.currStack.push(item);
 } else if (instruction == "m") {
 var item = this.ownStack.pop();
 this.program.sharedStack.push(item);
 } else if (instruction == "M") {
 var item = this.program.sharedStack.pop();
 this.ownStack.push(item);
 } else if (instruction == "y") {
 var item = this.ownStack.top();
 this.program.sharedStack.push(item);
 } else if (instruction == "Y") {
 var item = this.program.sharedStack.top();
 this.ownStack.push(item);
 } else if (instruction == "\\") {
 var top = this.currStack.pop();
 var next = this.currStack.pop()
 this.currStack.push(top);
 this.currStack.push(next);
 } else if (instruction == "@") {
 var c = this.currStack.pop();
 var b = this.currStack.pop();
 var a = this.currStack.pop();
 this.currStack.push(c);
 this.currStack.push(a);
 this.currStack.push(b);
 } else if (instruction == ";") {
 this.currStack.pop();
 } else if (instruction == "+") {
 var b = this.currStack.pop();
 var a = this.currStack.pop();
 this.currStack.push(a + b);
 } else if (instruction == "-") {
 var b = this.currStack.pop();
 var a = this.currStack.pop();
 this.currStack.push(a - b);
 } else if (instruction == "*") {
 var b = this.currStack.pop();
 var a = this.currStack.pop();
 this.currStack.push(a * b);
 } else if (instruction == "/") {
 var b = this.currStack.pop();
 var a = this.currStack.pop();
 this.currStack.push(a / b);
 } else if (instruction == "%") {
 var b = this.currStack.pop();
 var a = this.currStack.pop();
 this.currStack.push(a % b);
 } else if (instruction == "_") {
 this.currStack.push(-this.currStack.pop());
 } else if (instruction == "I") {
 var value = this.currStack.pop();
 if (value < 0) {
 this.currStack.push(Math.ceil(value));
 } else {
 this.currStack.push(Math.floor(value));
 }
 } else if (instruction == ">") {
 var b = this.currStack.pop();
 var a = this.currStack.pop();
 this.currStack.push(+(a > b));
 } else if (instruction == "<") {
 var b = this.currStack.pop();
 var a = this.currStack.pop();
 this.currStack.push(+(a < b));
 } else if (instruction == "=") {
 var b = this.currStack.pop();
 var a = this.currStack.pop();
 this.currStack.push(+(a == b));
 } else if (instruction == "!") {
 this.currStack.push(+ !this.currStack.pop());
 } else if (instruction == "?") {
 this.currStack.push(Math.random());
 } else if (instruction == "n") {
 output = "" + this.currStack.pop();
 } else if (instruction == "o") {
 output = String.fromCharCode(this.currStack.pop());
 } else if (instruction == "r") {
 var input = this.program.io.getNumber();
 this.currStack.push(input);
 } else if (instruction == "i") {
 var input = this.program.io.getChar();
 this.currStack.push(input);
 } else if (instruction == "(") {
 this.length -= Math.floor(this.currStack.pop());
 this.length = Math.max(this.length, 0);
 } else if (instruction == ")") {
 this.length += Math.floor(this.currStack.pop());
 this.length = Math.min(this.length, this.code.length);
 } else if (instruction == "w") {
 this.wait = this.currStack.pop();
 }
 // Any unrecognized character is a no-op
 if (this.ip >= this.length) {
 // We've swallowed the IP, so this snake dies
 this.alive = false;
 this.program.snakesLiving--;
 } else {
 // Increment IP and loop if appropriate
 this.ip = (this.ip + 1) % this.length;
 }
 return output;
}
Snake.prototype.getHighlightedCode = function() {
 var result = "";
 for (var i = 0; i < this.code.length; i++) {
 if (i == this.length) {
 result += '<span class="swallowedCode">';
 }
 if (i == this.ip) {
 if (this.wait > 0) {
 result += '<span class="nextActiveToken">';
 } else {
 result += '<span class="activeToken">';
 }
 result += escapeEntities(this.code.charAt(i)) + '</span>';
 } else {
 result += escapeEntities(this.code.charAt(i));
 }
 }
 if (this.length < this.code.length) {
 result += '</span>';
 }
 return result;
}
// Define Program class
function Program(source, speed, io) {
 this.sharedStack = new Stack();
 this.snakes = source.split(/\r?\n/).map(function(snakeCode) {
 var snake = new Snake(snakeCode);
 snake.program = this;
 snake.sharedStack = this.sharedStack;
 return snake;
 }.bind(this));
 this.snakesLiving = this.snakes.length;
 this.io = io;
 this.speed = speed || 10;
 this.halting = false;
}
Program.prototype.run = function() {
 this.step();
 if (this.snakesLiving) {
 this.timeout = window.setTimeout(this.run.bind(this), 1000 / this.speed);
 }
}
Program.prototype.step = function() {
 for (var s = 0; s < this.snakes.length; s++) {
 var output = this.snakes[s].step();
 if (output) {
 this.io.print(output);
 }
 }
 this.io.displaySource(this.snakes.map(function (snake) {
 return snake.getHighlightedCode();
 }).join("<br>"));
 }
Program.prototype.halt = function() {
 window.clearTimeout(this.timeout);
}
var ioFunctions = {
 print: function (item) {
 var stdout = document.getElementById('stdout');
 stdout.value += "" + item;
 },
 getChar: function () {
 if (inputData) {
 var inputChar = inputData[0];
 inputData = inputData.slice(1);
 result = inputChar.charCodeAt(0);
 } else {
 result = -1;
 }
 var stdinDisplay = document.getElementById('stdin-display');
 stdinDisplay.innerHTML = escapeEntities(inputData);
 return result;
 },
 getNumber: function () {
 while (inputData && (inputData[0] < "0" || "9" < inputData[0])) {
 inputData = inputData.slice(1);
 }
 if (inputData) {
 var inputNumber = inputData.match(/\d+/)[0];
 inputData = inputData.slice(inputNumber.length);
 result = +inputNumber;
 } else {
 result = -1;
 }
 var stdinDisplay = document.getElementById('stdin-display');
 stdinDisplay.innerHTML = escapeEntities(inputData);
 return result;
 },
 displaySource: function (formattedCode) {
 var sourceDisplay = document.getElementById('source-display');
 sourceDisplay.innerHTML = formattedCode;
 }
};
var program = null;
var inputData = null;
function showEditor() {
 var source = document.getElementById('source'),
 sourceDisplayWrapper = document.getElementById('source-display-wrapper'),
 stdin = document.getElementById('stdin'),
 stdinDisplayWrapper = document.getElementById('stdin-display-wrapper');
 
 source.style.display = "block";
 stdin.style.display = "block";
 sourceDisplayWrapper.style.display = "none";
 stdinDisplayWrapper.style.display = "none";
 
 source.focus();
}
function hideEditor() {
 var source = document.getElementById('source'),
 sourceDisplay = document.getElementById('source-display'),
 sourceDisplayWrapper = document.getElementById('source-display-wrapper'),
 stdin = document.getElementById('stdin'),
 stdinDisplay = document.getElementById('stdin-display'),
 stdinDisplayWrapper = document.getElementById('stdin-display-wrapper');
 
 source.style.display = "none";
 stdin.style.display = "none";
 sourceDisplayWrapper.style.display = "block";
 stdinDisplayWrapper.style.display = "block";
 
 var sourceHeight = getComputedStyle(source).height,
 stdinHeight = getComputedStyle(stdin).height;
 sourceDisplayWrapper.style.minHeight = sourceHeight;
 sourceDisplayWrapper.style.maxHeight = sourceHeight;
 stdinDisplayWrapper.style.minHeight = stdinHeight;
 stdinDisplayWrapper.style.maxHeight = stdinHeight;
 sourceDisplay.textContent = source.value;
 stdinDisplay.textContent = stdin.value;
}
function escapeEntities(input) {
 return input.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
}
function resetProgram() {
 var stdout = document.getElementById('stdout');
 stdout.value = null;
 if (program !== null) {
 program.halt();
 }
 program = null;
 inputData = null;
 showEditor();
}
function initProgram() {
 var source = document.getElementById('source'),
 stepsPerSecond = document.getElementById('steps-per-second'),
 stdin = document.getElementById('stdin');
 program = new Program(source.value, +stepsPerSecond.innerHTML, ioFunctions);
 hideEditor();
 inputData = stdin.value;
}
function runBtnClick() {
 if (program === null || program.snakesLiving == 0) {
 resetProgram();
 initProgram();
 } else {
 program.halt();
 var stepsPerSecond = document.getElementById('steps-per-second');
 program.speed = +stepsPerSecond.innerHTML;
 }
 program.run();
}
function stepBtnClick() {
 if (program === null) {
 initProgram();
 } else {
 program.halt();
 }
 program.step();
}
function sourceDisplayClick() {
 resetProgram();
}

.container {
 width: 100%;
}
.so-box {
 font-family:'Helvetica Neue', Arial, sans-serif;
 font-weight: bold;
 color: #fff;
 text-align: center;
 padding: .3em .7em;
 font-size: 1em;
 line-height: 1.1;
 border: 1px solid #c47b07;
 -webkit-box-shadow: 0 2px 2px rgba(0, 0, 0, 0.3), 0 2px 0 rgba(255, 255, 255, 0.15) inset;
 text-shadow: 0 0 2px rgba(0, 0, 0, 0.5);
 background: #f88912;
 box-shadow: 0 2px 2px rgba(0, 0, 0, 0.3), 0 2px 0 rgba(255, 255, 255, 0.15) inset;
}
.control {
 display: inline-block;
 border-radius: 6px;
 float: left;
 margin-right: 25px;
 cursor: pointer;
}
.option {
 padding: 10px 20px;
 margin-right: 25px;
 float: left;
}
h1 {
 text-align: center;
 font-family: Georgia, 'Times New Roman', serif;
}
a {
 text-decoration: none;
}
input, textarea {
 box-sizing: border-box;
}
textarea {
 display: block;
 white-space: pre;
 overflow: auto;
 height: 50px;
 width: 100%;
 max-width: 100%;
 min-height: 25px;
}
span[contenteditable] {
 padding: 2px 6px;
 background: #cc7801;
 color: #fff;
}
#stdout-container, #stdin-container {
 height: auto;
 padding: 6px 0;
}
#reset {
 float: right;
}
#source-display-wrapper , #stdin-display-wrapper{
 display: none;
 width: 100%;
 height: 100%;
 overflow: auto;
 border: 1px solid black;
 box-sizing: border-box;
}
#source-display , #stdin-display{
 font-family: monospace;
 white-space: pre;
 padding: 2px;
}
.activeToken {
 background: #f93;
}
.nextActiveToken {
 background: #bbb;
}
.swallowedCode{
 color: #999;
}
.clearfix:after {
 content:".";
 display: block;
 height: 0;
 clear: both;
 visibility: hidden;
}
.clearfix {
 display: inline-block;
}
* html .clearfix {
 height: 1%;
}
.clearfix {
 display: block;
}

<!--
Designed and written 2015 by D. Loscutoff
Much of the HTML and CSS was taken from this Befunge interpreter by Ingo Bürk: http://codegolf.stackexchange.com/a/40331/16766
-->
<div class="container">
<textarea id="source" placeholder="Enter your program here" wrap="off">i.0<5*(o32o</textarea>
<div id="source-display-wrapper" onclick="sourceDisplayClick()"><div id="source-display"></div></div></div><div id="stdin-container" class="container">
<textarea id="stdin" placeholder="Input" wrap="off">Input text...</textarea>
<div id="stdin-display-wrapper" onclick="stdinDisplayClick()"><div id="stdin-display"></div></div></div><div id="controls-container" class="container clearfix"><input type="button" id="run" class="control so-box" value="Run" onclick="runBtnClick()" /><input type="button" id="pause" class="control so-box" value="Pause" onclick="program.halt()" /><input type="button" id="step" class="control so-box" value="Step" onclick="stepBtnClick()" /><input type="button" id="reset" class="control so-box" value="Reset" onclick="resetProgram()" /></div><div id="stdout-container" class="container"><textarea id="stdout" placeholder="Output" wrap="off" readonly></textarea></div><div id="options-container" class="container"><div class="option so-box">Steps per Second:
<span id="steps-per-second" contenteditable>20</span></div></div>

Answer 20

Pyth, 5 bytes

+jdzd

Test here

Explanation:

 jdz Join input with spaces
+ d Concatenate space

Answer 21

0815, 26 bytes

<:20:~>}: :!~$#:
:{~$>^: :

Answer 22

Tcl, 44 bytes

puts [regsub -all {(.)} [gets stdin] {1円 }]

• sergiol: You're byte count is wrong! It is 43!

Answer 23

Lua, 31 Bytes

Saved 1 byte thanks to @LeakyNun

A simple chained substitution, replace each character by itself and a space.

s=(...):gsub(".","%1 ")print(s)

An other solution with the same byte count:

print((...):gsub(".","%1 "),'')

• Katenkyo: @manatwork I don't see how I did to miss this! Print automatically had a tab between each of it's parameters, totally forgot that point. Thanks for the comment!
• Leaky Nun: Can you change arg[1] to ...?

Answer 24

Swift 2.2, (削除) 48 (削除ここまで) 46 bytes

for c in i.characters{print(c,terminator:" ")}

Hey, at least it's shorter than Java... Saved 2 chars by using a for in loop instead of a forEach closure.

Answer 25

Batch, 87 bytes

@set/pt=&set w=
:l
@if not "%t%"=="" set w=%w%%t:~,1% &set t=%t:~1%&goto l
@echo(%w%

Conveniently taking input from STDIN is the same length as taking it from program arguments (set t=%*). The space between the % and & on the third line is significant, of course. The ( after the echo simply prevents it from erroring out if the input is empty.

Answer 26

TI-84 BASIC, 44 bytes

Pretty straightforward approach:

Input Str1
sub(Str1,1,1
For(A,2,length(Str1
Ans+" "+sub(Str1,A,1
End
Ans+" 

The only size optimizations I could come up with were:

• leaving off closing quotes and parentheses at the end of lines
• using Ans instead of a string variable (the Ans token is 1 byte, StrN are 2, and assignment to Ans is implicit)
• printing the result by placing it on the last line of the program (no Disp command needed)

This program wouldn't work correctly for an empty input string, since it unconditionally stores the first character of Str1 in Ans. (This is necessary because concatenation with an empty string raises an error!) Fortunately, the Input command doesn't accept an empty string in the first place.

The size calculation was informed by TI-Basic Developer's token size charts.

Answer 27

OIL, (削除) 52 (削除ここまで) 49 bytes noncompeting

Note: The second line contains a space character.

5
12
0
23
10
24
3
7
10
4
24
4
1
8
11
1
11
6
6
5

---

I explode the input string, then print each character and then a space.

Answer 28

Lua, 57 bytes

t=""io.read():gsub(".",function(c)t=t..c.." "end)print(t)

Answer 29

SmileBASIC 3, 44 bytes

INPUT A$FOR I=0TO LEN(A$)-1?A$[I]+" ";
NEXT

This doesn't leave a new line after the output, so from direct you might get

?HELLO
H E L L O OK

but hopefully it's not an issue.

• 12Me21: You can make the loop shorter by doing: WHILE""<A$?SHIFT(A$);" ";:WEND

Answer 30

Vim, (削除) 12 (削除ここまで) 10 keystrokes

:s/./& /g<CR>

1 byte longer:

qqa <Esc>l@qq@q

-2 bytes thanks to @KritixiLithos

• user41805: You don't need to delete the last space and :s/./0円 /g<CR>$x can become just :s/./& /g<CR> at 10 bytes.