Linked Questions

522 votes
985 answers
194k 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
369 answers
66k views

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
196 votes
416 answers
77k views

1, 2, Fizz, 4, Buzz

Introduction In our recent effort to collect catalogues of shortest solutions for standard programming exercises, here is PPCG's first ever vanilla FizzBuzz challenge. If you wish to see other ...
Beta Decay's user avatar
  • 23.4k
149 votes
336 answers
44k views

Fibonacci function or sequence

The Fibonacci sequence is a sequence of numbers, where every number in the sequence is the sum of the two numbers preceding it. The first two numbers in the sequence are both 1. Here are the first ...
C. K. Young's user avatar
  • 4,937
171 votes
169 answers
57k views

Don't google "google"

We all know that if you google the word "google" it will break the internet. Your task is to create a function that accepts one string and returns its length, in the fewest possible Unicode ...
rybo111's user avatar
  • 4,567
130 votes
208 answers
35k views

Sing Happy Birthday to your favourite programming language

Your favourite programming language has just had a birthday. Be nice and sing it the Happy Birthday song. Of course you should accomplish this by writing a program in that language. The program takes ...
David Frank's user avatar
  • 2,444
87 votes
226 answers
16k views

Count up forever

Write a program that counts up forever, starting from one. Rules: Your program must log to STDOUT or an acceptable alternative, if ...
vrwim's user avatar
  • 2,509
396 votes
50 answers
58k views

Covfefify a string

In this challenge, you must take a string matching the regex ^[a-zA-Z]+$ or whatever is reasonable (you don't have to consider uppercase or lowercase letters if you ...
Destructible Lemon's user avatar
95 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
229 votes
65 answers
19k views

No A, just CAPS LOCK

What happens when the CapsLock key on your keyboard doesn't have a notch in it? "This hPPENS." The goal of this program is to consistently emulate keyboard misses where each A press is replaced with ...
Broadwell's user avatar
  • 1,841
77 votes
144 answers
14k views

Print the last, middle and first character of your code

The challenge is simple: Print the last, middle, and first character of your program's source code, in that order. The middle character is defined as follows, assuming a source length of ...
bigyihsuan's user avatar
  • 9,776
130 votes
64 answers
40k views

Program that creates larger versions of itself (quine-variant)

You are to write a program that will output source code that is Larger than the original program (character wise) Will print another program larger than itself when run (i.e. the new program is also ...
Christopher King's user avatar
106 votes
93 answers
24k views

It took me a lot of time to make this, pls like. (YouTube Comments #1)

Hold up..... this isn't trolling. Background These days on YouTube, comment sections are littered with such patterns: ...
Arjun's user avatar
  • 5,074
88 votes
72 answers
15k views

Print your code backwards - reverse quine

Write a program that prints its own source code out backwards, in other words an eniuq. Scoring: +50 if you use pull data from the Internet. +25 if you read your own source code. +1 point per ...
ike's user avatar
  • 1,865
75 votes
91 answers
17k views

Build me a brick wall!

Challenge I need help building a brick wall! Throw together some code for me using no input and produce the following output wall shown below: ...
Dylan's user avatar
  • 935

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