Linked Questions

517 votes
976 answers
192k views

"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
236 votes
184 answers
38k views

Evolution of "Hello World!"

This contest is officially over, the winner is jimmy23013. Congratulations! The challenge is to make a program that prints Hello World! to stdout. The catch is that ...
Calvin's Hobbies's user avatar
58 votes
150 answers
6k views

Evolution of OEIS

In this challenge, the goal is to recreate the On-Line Encyclopedia of Integer Sequences one sequence at a time. Similar to the Evolution of Hello World, each answer depends on a previous answer. ...
PhiNotPi's user avatar
  • 29.1k
45 votes
142 answers
12k views

Print X without X (robber's thread)

This is the robber's thread of a cops-and-robbers challenge. You can view the cop's thread here A pretty common beginner style question is to print some string, but, there's a catch!, you need to do ...
Wheat Wizard's user avatar
  • 98.6k
32 votes
77 answers
12k views

Count the number of ones in an unsigned 16-bit integer

Write some statement(s) which will count the number of ones in an unsigned sixteen-bit integer. For example, if the input is 1337, then the result is ...
ayane_m's user avatar
  • 1,019
43 votes
17 answers
8k views

What's the shortest contiguous subset of ASCII you need to output the rest?

The printable ASCII characters (hex codes 20 to 7E) in order are: ...
Calvin's Hobbies's user avatar
25 votes
42 answers
2k views

Answer-Chaining Fibonacci

(Inspired by ASCII's 95 Characters...95 Movie Quotes) The Challenge Given input n, output the nth Fibonacci number. You can ...
AdmBorkBork's user avatar
  • 43.4k
24 votes
8 answers
3k views

Prolific Perfect Pangram Programs Pertaining to Printable ASCII

Updates: Time limit removed. You must be able to describe output - see new rule. A pangram is a sentence that uses every letter in the alphabet at least once, such as: The quick brown fox jumps over ...
Calvin's Hobbies's user avatar
12 votes
10 answers
3k views

Golfing Emoticons

Introduction Your challenge today (inspired by this challenge) is to write a number of snippets, functions or full programs each that output various ascii emoticons, without reusing characters. ...
Amphibological's user avatar
16 votes
5 answers
2k views

RadioASCII Elements: Output the elements of the periodic table while slowly losing characters

Here is a list of the 118 (current) elements of the periodic table (in a collapsed Stack Snippet for your convenience): ...
Doorknob's user avatar
  • 71.5k
19 votes
4 answers
1k views

Decompose a number with bit-xor without the digits 0, 3, 7

Challenge Write a function or program which takes a positive decimal number, call it A, and output two positive numbers, B and C, such that: A == B bitxor C B and C must not contain any of the ...
kennytm's user avatar
  • 6,987
6 votes
3 answers
1k views

Pi language interpreter

Introduction From Esolangs.org : Pi is based on the brainfuck language and uses the same instructions as it. Pi works by calculating pi digits and introducing errors in some random digits of ...
Michael M.'s user avatar
  • 12.2k