Encouraging users to solve a challenge using as many different languages as they know. The end goal is to demonstrate how the same challenge is accomplished in different programming languages.
Questions tagged [rosetta-stone]
66 questions
46
votes
41 answers
Code Golf: Morris Sequence
The Challenge
The shortest code by character count that will output the Morris Number Sequence. The Morris Number Sequence, also known as the Look-and-say sequence is a sequence of numbers that starts as follows:
1, 11, 21, 1211, 111221, 312211,…

Vivin Paliath
- 94,126
- 40
- 223
- 295
42
votes
35 answers
Code Golf: Tic Tac Toe
Post your shortest code, by character count, to check if a player has won, and if so, which.
Assume you have an integer array in a variable b (board), which holds the Tic Tac Toe board, and the moves of the players where:
0 = nothing set
1 = player…

Aistina
- 12,435
- 13
- 69
- 89
41
votes
33 answers
Code Golf: The wave
The challenge
The shortest code by character count to generate a wave from the input string.
A wave is generated by elevating (line-1) a higher character, and degrading (line+1) a lower character. Equal characters are kept on the same line (no…

LiraNuna
- 64,916
- 15
- 117
- 140
40
votes
15 answers
Code golf: the Mandelbrot set
Usual rules for the code golf. Here is an implementation in python as an example
from PIL import Image
im = Image.new("RGB", (300,300))
for i in xrange(300):
print "i = ",i
for j in xrange(300):
x0 = float( 4.0*float(i-150)/300.0…

Stefano Borini
- 138,652
- 96
- 297
- 431
39
votes
22 answers
Code Golf: Number to Words
The code golf series seem to be fairly popular. I ran across some code that converts a number to its word representation. Some examples would be (powers of 2 for programming fun):
2 -> Two
1024 -> One Thousand Twenty Four
1048576 -> One Million…

Jason Z
- 13,122
- 15
- 50
- 62
37
votes
21 answers
Code Golf: Sierpinski's Triangle
The challenge
The shortest code, by character count to output an ASCII representation of Sierpinski's Triangle of N iterations made from the following ASCII triangle:
/\
/__\
Input is a single positive number.
Test cases
Input:
2
Output:
…

LiraNuna
- 64,916
- 15
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- 140
36
votes
14 answers
Code Golf - Banner Generation
When thanking someone, you don't want to just send them an e-mail saying "Thanks!", you want to have something FLASHY:
Input: THANKS!!
Output:
TTT H H AAA N N K K SSS !!! !!!
T H H A A NNN K K S !!! !!!
T HHH AAA NNN KK SSS !!! !!!
T H H…

Claudiu
- 224,032
- 165
- 485
- 680
36
votes
15 answers
Code Golf: Spider webs
The challenge
The shortest code by character count to output a spider web with rings equal to user's input.
A spider web is started by reconstructing the center ring:
\_|_/
_/ \_
\___/
/ | \
Then adding rings equal to the amount…

LiraNuna
- 64,916
- 15
- 117
- 140
36
votes
12 answers
Code Golf: Musical Notes
The challenge
The shortest code by character count, that will output musical notation based on user input.
Input will be composed of a series of letters and numbers - letters will represent the name of the note and the number will represent the…

LiraNuna
- 64,916
- 15
- 117
- 140
36
votes
26 answers
Code Golf: Seven Segments
The challenge
The shortest code by character count to generate seven segment display representation of a given hex number.
Input
Input is made out of digits [0-9] and hex characters in both lower and upper case [a-fA-F] only. There is no need to…

LiraNuna
- 64,916
- 15
- 117
- 140
31
votes
46 answers
Code Golf: Leibniz formula for Pi
I recently posted one of my favourite interview whiteboard coding questions in "What's your more controversial programming opinion", which is to write a function that computes Pi using the Leibniz formula.
It can be approached in a number of…

Greg Beech
- 133,383
- 43
- 204
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31
votes
14 answers
Code Golf: Beehive
The challenge
The shortest code by character count that will generate a beehive from user input.
A beehive is defined a a grid of hexagons in a size inputted by the user as two positive numbers greater than zero (no need to validate input). The…

LiraNuna
- 64,916
- 15
- 117
- 140
30
votes
17 answers
Code Golf: 1x1 black pixel
Recently, I used my favorite image editor to make a 1x1 black pixel (which can come in handy when you want to draw solid boxes in HTML cheaply). Even though I made it a monochrome PNG, it came out to be 120 bytes! I mean, that's kind of steep. …

Joey Adams
- 41,996
- 18
- 86
- 115
29
votes
50 answers
Palindrome Golf
The goal: Any language. The smallest function which will return whether a string is a palindrome. Here is mine in Python:
R=lambda s:all(a==b for a,b in zip(s,reversed(s)))
50 characters.
The accepted answer will be the current smallest one - this…

Claudiu
- 224,032
- 165
- 485
- 680
27
votes
9 answers
Code-Golf: Friendly Number Abbreviator
Based on this question: Is there a way to round numbers into a friendly format?
THE CHALLENGE - UPDATED! (removed hundreds abbreviation from spec)
The shortest code by character count that will abbreviate an integer (no decimals).
Code should…

David Murdoch
- 87,823
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