Linked Questions

145 votes
569 answers
46k views

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
94 votes
173 answers
16k views

Print a Tabula Recta!

The Tabula Recta (sometimes called a 'Vigenere Table'), was created by Johannes Trithemius, and has been used in several ciphers, including all variants of Bellaso's Vigenere cipher and the Trithemius ...
user avatar
66 votes
170 answers
16k views

Print 0 to 100 without 1-9 characters

Print integers 0 to 100 (inclusive) without using characters 123456789 in your code. Separator of numbers can be comma or white space (by default <blank>, <...
user avatar
112 votes
87 answers
27k views

Draw the national flag of Iceland

This year's UEFA Euro 2016 is over and besides a couple of negative headlines there has been a very positive surprise as well – the Iceland national football team. Let's draw their national flag. ...
insertusernamehere's user avatar
57 votes
169 answers
17k views

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
100 votes
92 answers
17k views

It was just a bug

Inspired by the bugged output in @Carcigenicate's Clojure answer for the Print this diamond challenge. Print this exact text: ...
Kevin Cruijssen's user avatar
76 votes
119 answers
9k views

Make an alphabet searchlight!

Inspired by a bug in a solution to this challenge, your challenge is to produce this exact text: ...
MD XF's user avatar
  • 13.8k
84 votes
79 answers
14k views

Draw the Ukrainian Flag

As you probably know, there is a war going on in Ukraine. I noticed that it seems nobody has posted a Ukrainian flag challenge yet, so I thought I'd do it myself in support of Ukraine. The Challenge ...
Ginger's user avatar
  • 5,430
56 votes
135 answers
18k views

Is this number evil?

Introduction In number theory, a number is considered evil if there are an even number of 1's in its binary representation. In today's challenge, you will be identifying whether or not a given number ...
Amphibological's user avatar
39 votes
126 answers
5k views

Lolololololololololololol

Let us take a break from the brain-wrecking questions and answer some of the simpler ones You have recently read something extremely funny, and want to express your laughter to the world! But how can ...
SunnyMoon's user avatar
  • 2,679
115 votes
33 answers
19k views

Blink the CAPS LOCK

Most computer keyboards feature a small integrated LED light, indicating the current input mode, as controlled with the CAPS LOCK button. Your task is to blink it: Turn it on; Wait for 0.5 (+/-0.1) ...
zeppelin's user avatar
  • 8,476
37 votes
108 answers
6k views

Alphabet Staircase

The Challenge Your task is to create a program or function that outputs the following with no input: ...
SpookyGengar's user avatar
  • 1,813
108 votes
38 answers
7k views

Source code ecological footprint

You've just been hired by a German car manufacturing company. Your first task, as an engineer, is to write a program that computes the ecological footprint of ASCII strings. The ecological footprint ...
Arnaud's user avatar
  • 8,513
43 votes
95 answers
6k views

Print an alphabet wave

You are to print this exact text: ...
Leaky Nun's user avatar
  • 49.7k
69 votes
51 answers
12k views

Oreoorererereoo

Oreoorererereoo Given an input string that is similar to the word "oreo", give an ASCII representation of the cookie that is as wide as the input string (to ensure cookie stability). Rules The ...
GammaGames's user avatar
  • 1,105

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