🔢💻 Challenge: Putting commas! 💻🔢

Question

Write a program that gets a number from user, and prints the number with commas inserted in the correct position.

For example:

* 123 --> 123
* 1234 --> 1,234
* 98765 --> 98,765
* 1223334444 --> 1,223,334,444

Bonus: Get your program to handle correctly negative numbers.

All languages and paradigms are very welcome! One liners, two-liners, tri-liners, tetra-liners, poli-liners, multi-liners, hyper-liners, time-liners, etc, all welcome!

Be creative, and most of all: Have fun!!

Thanks for your attention.

Answer 1

https://code.sololearn.com/cfDXtDOX2So0/?ref=app

Answer 2

Shortest one in Java?
https://code.sololearn.com/c4aFRHFAsB7U/?ref=app

Answer 3

https://code.sololearn.com/cfomdHt1yWua/?ref=app

Answer 4

https://code.sololearn.com/cqE6z6DVpz95/?ref=app

In one line

Answer 5

Here's:
https://code.sololearn.com/WFeHM83K97e3/?ref=app

Answer 6

@ʎʇɹǝʍb But your link to a C# program. 😂

Answer 7

Here's my C# implementation! ✌

Non-LINQ One-Liner〰
new List<int>
{
123,
-123,
1234,
-1234,
98765,
-98765,
1223334444
}.ForEach(n => Console.Write(n.ToString("n0")));

It's a trivial challenge for C#. Enjoy~ ❤

https://code.sololearn.com/cpZcRsQX4Bmk/?ref=app

Answer 8

@qwerty: Wow! that was fast! 😊

Answer 9

https://code.sololearn.com/WY7k6VETneY9/?ref=app

Answer 10

Number.prototype.commas = function (){
return this.toString().split('').map(function(n,i,a) {
return (a[0]=='-'&&i==1)||(i==0)||(a.length-i)%3!=0? n:','+n;
}).join('');
}

https://code.sololearn.com/WG3v612Z4gKl/?ref=app

Answer 11

Here you go. Checks for valid input
https://code.sololearn.com/cCYpRcd5E2IT/?ref=app

Answer 12

https://code.sololearn.com/cY7cIYWwteKj/?ref=app

Answer 13

at last!!!
https://code.sololearn.com/c5VzMEXgGABR/?ref=app

Answer 14

My example on cpp :)

https://code.sololearn.com/cOzYL6Rqqa4G/?ref=app

Answer 15

Here is my answer. I know my code would be better if I could use regexp efficientlly...
https://code.sololearn.com/c1K4lJApSdSD/?ref=app

Answer 16

Here is my code. Can handle leading zeros.

https://code.sololearn.com/WT9WBqm7EhED/?ref=app

Answer 17

My try:
https://code.sololearn.com/ctG37PeBwygP/?ref=app