Edit - Code Golf Stack Exchange

You are not logged in. Your edit will be placed in a queue until it is peer reviewed.

We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

Required fields*

Rev

Required fields*

!I!n!s!e!r!t! !i!n!b!e!t!w!e!e!n!

Posted from here.

This challenge is highly "distilled" from this question. Special thanks to @Akababa!

In this task, you should insert an exclamation mark at the start of the string and after every character.

Rules

There will always be a non-empty-string input. The input will not contain tabs either. You can assume that the input only contain non-extended ASCII printable characters and newlines.
The input will not contain trailing newlines as long as your language can't detect a newline.
This is a code-golf contest; the shortest answer should win.

Examples

4 newlines result in 5 newline-delimited exclamation marks. It is very hard to put this as a Markdown text, so this is stated instead.

1 2 3 4 5 6
129591 129012 129127 129582
0

Outputs

!1! !2! !3! !4! !5! !6!
!1!2!9!5!9!1! !1!2!9!0!1!2! !1!2!9!1!2!7! !1!2!9!5!8!2!
!
!0!

asd afjoK ak:e
kPrLd
 fOJOE;
 KFO
KFkepjgop sgpaoj faj

Outputs

!a!s!d! !a!f!j!o!K! !a!k!:!e!
!k!P!r!L!d!
! ! ! ! !f!O!J!O!E!;!
! ! ! ! !K!F!O!
!K!F!k!e!p!j!g!o!p! !s!g!p!a!o!j! ! ! !f!a!j!

A base test case with only one character:

Outputs

!a!

(Auto-completion! Just kidding, there is no such thing.) Contains exclamation marks:

!!
!!
!!
!!
!!

Outputs:

!!!!!
!!!!!
!!!!!
!!!!!
!!!!!

Answer*

If this is an answer to a challenge…

…Be sure to follow the challenge specification. However, please refrain from exploiting obvious loopholes. Answers abusing any of the standard loopholes are considered invalid. If you think a specification is unclear or underspecified, comment on the question instead.
…Try to optimize your score. For instance, answers to code-golf challenges should attempt to be as short as possible. You can always include a readable version of the code in addition to the competitive one. Explanations of your answer make it more interesting to read and are very much encouraged.
…Include a short header which indicates the language(s) of your code and its score, as defined by the challenge.

More generally…

…Please make sure to answer the question and provide sufficient detail.
…Avoid asking for help, clarification or responding to other answers (use comments instead).

Draft saved

Draft discarded

Edit Summary*

Cancel

\$\begingroup\$ Actually the Sed code is just 15 characters there: Try it online!. \$\endgroup\$

manatwork
– manatwork

2019年08月19日 15:11:28 +00:00
Commented Aug 19, 2019 at 15:11
\$\begingroup\$ Great, thank you. I was unclear how that worked... \$\endgroup\$

Jonah
– Jonah

2019年08月19日 15:13:30 +00:00
Commented Aug 19, 2019 at 15:13
1

\$\begingroup\$ s/\b\|\B/!/g also works for 12 bytes \$\endgroup\$

user41805
– user41805

2019年08月20日 07:15:27 +00:00
Commented Aug 20, 2019 at 7:15
\$\begingroup\$ @Cowsquack thank you. updated. \$\endgroup\$

Jonah
– Jonah

2019年08月20日 12:47:42 +00:00
Commented Aug 20, 2019 at 12:47

Add a comment |

How to Edit

Correct minor typos or mistakes
Clarify meaning without changing it
Add related resources or links
Always respect the author’s intent
Don’t use edits to reply to the author

How to Format

create code fences with backticks ` or tildes ~
```
like so
```
add language identifier to highlight code
```python
def function(foo):
print(foo)
```
put returns between paragraphs
for linebreak add 2 spaces at end
_italic_ or **bold**
indent code by 4 spaces
backtick escapes `like _so_`
quote by placing > at start of line
to make links (use https whenever possible)

<https://example.com>

[example](https://example.com)

<a href="https://example.com">example</a>
MathJax equations \$\sin^2 \theta\$

formatting help »
answering help »

MathJax help »

How to Tag

A tag is a keyword or label that categorizes your question with other, similar questions. Choose one or more (up to 5) tags that will help answerers to find and interpret your question.

complete the sentence: my question is about...
use tags that describe things or concepts that are essential, not incidental to your question
favor using existing popular tags
read the descriptions that appear below the tag

If your question is primarily about a topic for which you can't find a tag:

combine multiple words into single-words with hyphens (e.g. code-golf), up to a maximum of 35 characters
creating new tags is a privilege; if you can't yet create a tag you need, then post this question without it, then ask the community to create it for you

popular tags »