Linked Questions

515 votes
969 answers

"Hello, World!"

So... uh... this is a bit embarrassing. But we don't have a plain "Hello, World!" challenge yet (despite having 35 variants tagged with hello-world, and counting). While this is not the most ...
Martin Ender's user avatar
234 votes
366 answers

Is this number a prime?

Believe it or not, we do not yet have a code golf challenge for a simple primality test. While it may not be the most interesting challenge, particularly for "usual" languages, it can be nontrivial in ...
Dennis's user avatar
  • 210k
144 votes
566 answers

Shortest infinite loop producing no output

Your task is to create the shortest infinite loop! The point of this challenge is to create an infinite loop producing no output, unlike its possible duplicate. The reason to this is because the code ...
user41805's user avatar
  • 13.1k
145 votes
333 answers

Shortest code to produce infinite output

Write the shortest code you can that produces an infinite output. That's all. You code will only be disqualified if it stops producing output at some point. As always in code golf, the shortest code ...
tbodt's user avatar
  • 2,416
111 votes
286 answers

Output with the same length as the code

In this challenge, you should write a program or function which takes no input and prints or returns a string with the same number of bytes as the program itself. There are a few rules: You may only ...
Martin Ender's user avatar
103 votes
298 answers

Create output twice the length of the code

The Challenge Write a complete program that writes twice as many bytes to standard output as the length of the program. Rules The program must write ASCII characters to the standard output. The ...
Daniel M.'s user avatar
  • 3,929
150 votes
160 answers

I double the source, you double the output!

Your task, if you wish to accept it, is to write a program that outputs a positive integer (higher than 0). The tricky part is that if I duplicate your source code, the output must be double the ...
Mr. Xcoder's user avatar
  • 42.3k
57 votes
169 answers

Output programming language name

Challenge: In the programming language of your choice, take no input and output your programming language's name. Fair enough, right? Restrictions: You can't use any character that is included in ...
Offtkp's user avatar
  • 3,062
32 votes
80 answers

Swap the parity

Task Given a positive integer n, output n+1 if n is odd, and output ...
Leaky Nun's user avatar
  • 49.6k
52 votes
47 answers

99 bugs in the code

99 bugs in the code The adaption of "99 bottles of beer on the wall" for computer science where the bugs increase instead of the bottles decreasing is often re-posted around the internet. ...
Sam Dean's user avatar
  • 708
33 votes
63 answers

Integer Lists of Noah

Introduction: I think we've all heard of it, but here a very brief summary: Noah gathered two of every species of animal on the planet, male and female, to save in his Ark during a great flood. The ...
Kevin Cruijssen's user avatar
38 votes
53 answers

(RGS 1/5) Binary multiples [duplicate]

A binary multiple of a positive integer k is a positive integer n such that n is written ...
RGS's user avatar
  • 14k
32 votes
51 answers

How many petals around the rose

How many petals around the rose How many petals around the rose is a dice game you can play with your friends. Similar to "can I join the music box", there is a person that knows how the ...
RGS's user avatar
  • 14k
19 votes
56 answers

Find the number of integers in the range from 1 to N that ends with 2

Task As input you have: a positive integer N And you should output: The number of integers in \$[1,N]\$ (an inclusive range) which end with the digit \$2\$ in ...
USERNAME GOES HERE's user avatar
23 votes
36 answers

Reverse Bit Order of 32-bit Integers

Write the shortest code to reverse the bit order of a 32-bit integer. Rules: Input is assumed to be a valid integer or string equivalent if your language doesn't support numerical values (e.g. ...
Claudia's user avatar
  • 1,730