Linked Questions

43
votes
67answers
6k views

Play a sound, any sound [closed]

Your program has to make the computer produce a sound, any sound. Shortest code wins, not sooner than 10 days after the first valid answer. If there is a tie, the one submitted sooner, wins. The ...
48
votes
66answers
6k views

Depalindromize this string!

Given a palindrome generated according to this challenge, depalindromize it. Test cases ...
29
votes
65answers
3k views

A square of text

The Challenge Given a string, output the text in the shape of a square. You can assume that the text will always fit in a square, and that it will never be an empty string. You can also assume it ...
24
votes
63answers
9k 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 ...
29
votes
53answers
8k views

The Smart Person's Mirage

Once upon a time, I was reading this question/answer on Quora Are there really programmers with computer science degrees who cannot pass the FizzBuzz test This code is given as the obvious answer <...
22
votes
48answers
2k views

Draw an alphabet party hat

Your task is to print this exact text: ...
46
votes
38answers
5k views

Fake Marquee Text

In this challenge fake marquee text is text that is shown part by part, in a scrolling-like fashion. Some examples: ...
51
votes
32answers
9k views

Generate a mandelbrot fractal [closed]

Your task is to draw the mandelbrot set in ascii. It should look something like The complex number c lies in the mandelbrot set, when the sequence ...
21
votes
32answers
3k views

Print out the first N characters of your code

You should write a program or function that receives a positive integer N as input and prints out the first N characters of your ...
13
votes
32answers
4k views

Color RGB int to hex

Given three integers rgb, output hexadecimal representation as a string. ...
29
votes
29answers
3k views

Let's do the Wave!

Input: A string (the wave-snippet) with a length >= 2. A positive integer n >= 1. Output: We output a single-line wave. ...
135
votes
28answers
11k views

Making Future Posts Runnable Online with Stack Snippets

Stack Snippets were recently added to PPCG! Reminiscent of JSFiddle, Stack Snippets allow HTML, CSS, and JavaScript to be run directly in posts! Here is a very simple Stack Snippet: ...
82
votes
25answers
7k views

Bake a slice of Pi

Write a program or function that prints or outputs this exact text (consisting of 142 characters): ...
26
votes
25answers
2k views

Home on the Range of Lists

This challenge is simply to return a list of lists of integers, similar to the Python range function, except that each successive number must be that deep in lists. Rules: Create a program or a non-...
30
votes
24answers
3k views

Palindromizing the strings

Introduction For the ones who don't know, a palindrome is when a string is equal to the string backwards (with exception to interpunction, spaces, etc.). An example of a palindrome is: ...
24
votes
24answers
4k views

Shortest Minmod Function

The minmod function is a variant of the familiar min, which appears in slope-limiting high-resolution schemes for partial differential equations. Given a number of slopes, it picks out the flattest ...
24
votes
23answers
4k views

How many times will a bell tower ring?

Introduction A bell tower will ring its bells every hour, n times, with n being the the current hour on a 12 hour clock. For ...
41
votes
22answers
4k views

Remove every N-th N

The task In this challenge, your input is a non-empty list of positive integers, given in the native format of your language. Your output is that same list, in the same format, with some elements ...
34
votes
22answers
8k views

XOR multiplication

You goal is to implement the operation of XOR (carryless) multiplication, defined below, in as few bytes as possible. If we think of bitwise XOR (^) as binary ...
53
votes
21answers
4k views

Print This Question ↓

The basic idea of a kolmogorov-complexity challenge is to print a set output in the shortest code (though that meaning has changed now). We have had many of them, from Borromean Rings to The ...
45
votes
21answers
2k views

Tips for golfing in The Shakespeare Programming Language

What general tips do you have for golfing in The Shakespeare Programming Language? I'm looking for ideas which can be applied to code-golf problems and which are also at least somewhat specific to SPL ...
18
votes
21answers
1k views

Output diagonal positions of me squared

Given a number n, Output an ordered list of 1-based indices falling on either of the diagonals of an n*n square matrix. ...
14
votes
21answers
2k views

Do Matrix Multiplication!

In mathematics, matrix multiplication or the matrix product is a binary operation that produces a matrix from two matrices. The definition is motivated by linear equations and linear transformations ...
16
votes
20answers
1k views

Produce a List of Rotonyms 1

Rotonyms 1 ROT13 ("rotate by 13 places") is a simple letter substitution cipher that replaces a letter with the 13th letter after it, in the alphabet. So, A ...
30
votes
18answers
10k views

Draw an Empty Scrabble Board

A standard Scrabble board is a 15×15 grid of spaces to place letter tiles. Most of the spaces are blank but some are double word scores (pink), triple word scores (red), double letter scores (...
28
votes
18answers
6k views

Shortest Sorted Hello World

Write a program that takes no input and prints Hello, World! to stdout or your language's closest alternative. The catch is that each line in your program must only ...
16
votes
18answers
3k views

Lowest-Base Palindrome

Given a number n, write a function that finds the smallest base b ≥ 2 such that n is a ...
46
votes
17answers
12k views

Tips for golfing in Jelly

Jelly is a tacit, golf-oriented programming language by our very own Dennis. It’s popping up in answers here more and more often, beating other golf-y languages like Pyth and CJam, both by using its ...
91
votes
15answers
9k views

Create a programming language that only appears to be unusable

Robbers' challenge thread is here. Cops' challenge: Design a programming language that appears to be unusable for programming, but admits computation (or at least completion of the task) through some ...
14
votes
15answers
3k views

Fill In the Blanks

Input A nonnegative integer n, and a nonempty string s containing only alphanumeric characters and underscores ...
23
votes
14answers
2k views

Make a Bubble-wrap simulator

Bubble-wraps are maximum-level entertainment. Everyone can agree to that. Now, you will make even computers enjoy bubble-wraps. Specs You will be given two integers, w, and h.(each are responsively ...
19
votes
14answers
2k views

Seeking Secret Swapping Sequences

This is a cops-and-robbers challenge, the robbers thread can be found here. Your task is to write some code that outputs an OEIS sequence, and contains the name of the sequence in the code (...
18
votes
14answers
2k views

Golf the Chinese 9*9 multiple table

Output the following table: ...
19
votes
13answers
651 views

Tips for golfing in dc

What general tips do you have for golfing in dc? dc is a calculator utility for UNIX/Linux that predates the C language. I am interested in how to make my dc programs (calculations?) shorter. I'm ...
4
votes
13answers
2k views

0.0000000000000000001

Notice the pattern in the below sequence: 0.1, 0.01, 0.001, 0.0001, 0.00001 and so on, until reaching 0.{one hundred zeros}1 Then, continued: ...
34
votes
12answers
6k views

Code Golf of Death [closed]

Write some code that causes a BSOD or kernel panic! Rules: On Windows, you must cause a BugCheck (Blue Screen of Death), on Linux (or other *nix systems) you must cause a kernel panic. Must not ...
12
votes
12answers
1k views

Iterated Dice Rolling

Given an input n where 3 <= n <= 25, perform the following steps, starting with a single ...
8
votes
12answers
1k views

Rearranging a set of numbers into order

The Question Given a set of 9 numbers, m[], which contains only numbers 1 through 9 in a random order, with no two numbers being the same, create a program in any ...
7
votes
12answers
258 views

Tips for golfing in Factor

What general tips do you have for golfing in Factor? I'm looking for ideas that can be applied to code golf problems in general that are at least somewhat specific to Factor (e.g. "remove comments" is ...
45
votes
11answers
2k views

Run Stackylogic

Stackylogic is a logic-based programming language I made up that take in 0's and 1's for input and outputs a single ...
21
votes
11answers
3k views

Is it a substring of itself?

Given a string, return whether the string is a substring of the program's source code. Standard quine rules apply, meaning you cannot read your own source code. The length of the input is guaranteed ...
17
votes
10answers
1k views

Sign change, loop and display with minimal padding

Input: Two integers: one negative, one positive. Output: On the first line output lowest to highest. On the second line we've removed the highest and lowest numbers and sign-changed all individual ...
40
votes
8answers
6k views

40 Numbers in 9 Bytes

There are 40 ways a directed Hamiltonian path can be arranged on a 3×3 grid: This graphic (thanks Sp3000!) shows only the 20 undirected paths. Traverse each colored line in both directions for ...
26
votes
8answers
3k views

Err, Where am I?

Oh no! I'm trapped in a big forest (Okay, not really, but just assume it) and I don't know where I am! Thankfully, I brought my laptop. But when I searched 'Maps', It said 'No results', and I'm ...
26
votes
7answers
2k views

Tips for Creating/Maintaining a Golfing Language

Creating a golfing language can be hard. Let's help budding golfing language creators out and provide some helpful tips on how to create one. I'm looking for tips on: The design process ...
19
votes
7answers
912 views

Hilbert-Curvify a Matrix

Inspired by this question Another way to unroll a 2D image into a 1D string is to use an Hilbert Curve. There are many version of this curve, depending on the number of iterations used while ...
9
votes
7answers
366 views

Detecting anagrams within a Parent String

Given two strings, a parent string and a query string respectively, your task is to determine how many times the query string, or an anagram of the query string; appears in the parent string, in a ...
8
votes
4answers
2k views

Build a Simple Roguelike

This challenge is based on one proposed on the usenet group rec.games.roguelike.development a few years ago. I can't find the original newsgroup post, but you can have a look a the Github repo of ...
15
votes
3answers
484 views

Reverse-Engineer the N-Bonacci sequence[s]

EDIT: I will be accepting an answer Monday, 2/15/2016. May the bytes be ever in your favor! In his "Print the N-Bonacci Sequence" challenge, @DJMcGoathem describes the N-bonacci sequences, wherein ...
56
votes
2answers
6k views

Seriously, GolfScript, CJam, or Pyth?

Some time ago, the following question was asked: GolfScript, CJam, or Pyth? Based on the title only, I thought that it would be a very nice challenge, but unfortunately, it turned out to be a question ...

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