Questions tagged [random]

Tasks involving random numbers and/or output.

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6
votes
1answer
664 views

Print out a shape in printable ASCII art based on a specific number of sides provided by the user

The Challenge: Just as the title says, your challenge is to use the printable ASCII characters to create a program that prints out a random polygon in the terminal based on the number of sides, n ...
16
votes
24answers
2k views

Random array without repetition

I was answering one challenge here and this task was part of the challenge. I've got a 73 bytes solution in javascript. But I think it is too much for a simple thing. Challenge Given as input two ...
7
votes
1answer
340 views

Create a diagonal sudoku board

A Diagonal Sudoku board is a special case of Latin squares. It has the following properties: The board is a 9-by-9 matrix Each row contains the numbers 1-9 Each ...
16
votes
10answers
2k views

Creating a falling ball map

Introduction For the ones who never heard of this game before. You are playing a ball which needs to survive as long as possible. This is done by moving to the left or right, going to the holes. ...
9
votes
4answers
1k views

Naïve Markov Chain Word Generation

There are many ways to generate random words. You can take random syllables from a set, you can use n-tuples, probably neural networks (what can't they do?), alternating between consonants and vowels, ...
21
votes
3answers
739 views

Randomize the test

I'm a teacher, and in a few days I have to give my students a test. Now, I'm always worried about my loveliest students being hurt by the least loveliest ones when they cheat, so I want to randomize ...
20
votes
1answer
537 views

The puppy command

The puppy utility takes a filename as input, and does exactly what you would expect a puppy to do: it shreds it! How to shred Rip out the pages with your teeth ...
17
votes
5answers
982 views

Is this number random?

I asked random.org for 128 random integers between 0 and 232 - 1. Since the random number generator was so eager to give the first 64 numbers first, they're obviously more random than the other 64. ...
8
votes
5answers
467 views

Word or near-word?

Write a program or function that given a string (or your language's equivalent), determine if the string is a word, or not, and output a truthy or falsy value. (This is not a duplicate of Is this ...
5
votes
3answers
345 views

Golf Me a Random Dubstep of the Day List

Aside of nursing my child, Vitsy, and dabbling in the art of code golf, I also am an avid dubstep fan, listening to all the new dubstep that Monstercat puts out as regularly as I can. I also share a ...
13
votes
4answers
409 views

Interpret the Pig series

Given an input of a Pig, SickPig, DeadPig, QuinePig, or DeafPig program, choose one of those "languages" randomly and interpret the input as that "language." First, randomly choose between one of the ...
12
votes
3answers
1k views

Help me Shut the Box

The inspiration for this challenge should be ridiculously obvious at the time of posting. The Task You must create a Shut the Box style program (not function, program). The basics of shut the box ...
6
votes
5answers
229 views

Sample win/loss data generator based on certain criteria

Lets say we have this existing data: Total - 10 Won - 7 Lost - 3 Longest Winning Streak - 5 Longest Losing Streak - 2 Now you need to write a function which ...
17
votes
4answers
535 views

Exploding Cats!

Challenge You will be making a program/function that takes a string input of length n, and: Puts the kth char at the center of ...
9
votes
1answer
236 views

MarGolf Meets Langton's Anthill

This is Markov. Markov's golf ball rolls around randomly. Markov's ball will hole however he strikes it. Markov is smart. Be like Markov. And this: is an anthill ...
34
votes
28answers
6k views

Choose The Powerball Numbers!

Powerball is an American lottery that has recently gained attention because the current jackpot (as of January 11, 2016) is the largest lotto prize in history, at about $1.5 billion (USD). Powerball ...
16
votes
2answers
329 views

Chess-olition Derby

What could be more polar opposites than chess and demolition derby. You would think that no one who enjoys one would enjoy the other... until today. Rules The starting position is a standard chess ...
-4
votes
8answers
194 views

Use what you know: Your take on Diceware [duplicate]

If you're not familiar, Diceware is a method for creating passwords using an ordinary die from a pair of dice as a hardware random number generator. For the sake of fun, let's ignore anything about ...
27
votes
9answers
4k views

Map a random number to pi

A double precision representation of a decimal can only guarantee an accuracy of 15 decimal places, thus pi is approximated as: 3.141592653589793 You can see ...
24
votes
15answers
1k views

The Random Walker Printer

Draw a program or function that will write to STDOUT n times (each for one step) a string that contains a dot ...
29
votes
47answers
3k views

1/N probability

Because there are not enough simple code-golf challenges: Create an optionally unnamed program or function that, given (by any means) an integer 1 ≤ N ≤ 10000, outputs your language's True value with ...
32
votes
32answers
4k views

Russian Roulette, Reloaded

Let's play Russian Roulette! Normally, this would be a race to write the shortest MOD 6 program, but that's not very realistic, as the chance of winning decreases with each click. Here are the rules: ...
14
votes
8answers
472 views

D&D Skill Challenges

In Dungeons & Dragons, almost everything is decided by rolling a die. Typically, if the roll is greater than or equal to a specified value, your attempt at doing whatever you wanted to do succeeds,...
57
votes
42answers
4k views

Alex-style Addition

Inspired by Alex's glorious Learn you an R for great good, we are going to humbly recreate Alex's "one true R program" -- but with a twist. Alex-style Addition works like this -- it has a 90% chance ...
17
votes
2answers
943 views

Random Golf of the Day #6: Roll a d20

About the Series First off, you may treat this like any other code golf challenge, and answer it without worrying about the series at all. However, there is a leaderboard across all challenges. You ...
26
votes
7answers
2k views

Generating Brainf*** NOPs

Sometimes when writing brainfuck code, you feel the need to make it longer than needed to encourage debugging. You could do it by just plopping a >< in there, ...
12
votes
12answers
1k views

Iterated Dice Rolling

Given an input n where 3 <= n <= 25, perform the following steps, starting with a single ...
26
votes
3answers
1k views

Golf yourself a beer

It's friday! Which means it's time for beer! Sadly though, today we will be golfing beer instead of drinking it. :( Challenge Output a beer and drink it. The amount of sips you take changes your ...
1
vote
3answers
187 views

Layout my tiles for me

I'm retiling my kitchen with different coloured tiles. In fact, it's going to have at least 2 colours - and 26 colours as a maximum. But, I'm fussy. I want this wall to look random, but sometimes ...
103
votes
16answers
4k views

Simulate the Universe!

One nice property of a Turing-complete language is that it can be used to write any program, up to and including the simulation of the entire Universe. Your job is to do exactly that: write a program ...
23
votes
2answers
581 views

Plumbing Random Paths

Write a program or function that takes in three integers, a width w, a height h, and a step count ...
-4
votes
24answers
454 views

Generate 0 or 1 [closed]

Is this Q too easy to ask, or has it just never been thought of? Generate a random number, either 0 or 1 using a program You may use a pre-defined function. The code must be executable. (It can't ...
10
votes
11answers
1k views

“i” have “i” chance of occuring

Design a random number generator where the i th number has i% chance of occurring for all 0 < i < 14. 0 should have exactly 9% chance of occurring. The seed for the generator should be the ...
5
votes
1answer
155 views

Roller coaster of numbers [duplicate]

Write a program that generates a sequence of numbers starting with zero and then 100 random integers between -9 and 9. That sequence will be displayed like a roller coaster. Any increasing number in ...
15
votes
20answers
1k views

Boo! A Halloween Code Golf Challenge

Write a program that takes an input string of length 2 or more characters and adds the string ~BOO!~ (that string has a leading and ending space) in a uniformly ...
18
votes
11answers
906 views

Simulate a game of Craps

Craps is a fairly simple dice game often played in casinos. Even if you aren't a gambler (which I'm not), it's still a fairly interesting game. Here's the rules: At the start of a game of Craps there'...
17
votes
2answers
516 views

Generate Some Secure PINs

Inspired by this badly received migrated post. The head of security at your company is concerned about your PIN generating system after it gave him 12345. He also ...
12
votes
3answers
390 views

Generate a Monotonic Function

Overview In this challenge, your task is to randomly generate a monotonic mathematical function between two sets. Input Your inputs are two positive integers s ...
15
votes
38answers
3k views

Generate random UUID

I need a UUID. Your job is to generate one. The canonical UUID (Universally Unique IDentifier) is a 32 digit hexadecimal number with hyphens inserted in certain points.The program should output 32 ...
28
votes
30answers
3k views

Person of Interest

Background Person of Interest is a crime drama on CBS, and my favorite TV show, as of late. The show is about a man named Harold Finch, a billionaire programmer, and his partner John Reese, a ...
15
votes
15answers
2k views

Randomize points on a disc

I read about circles somewhere, and just now learned about discs (it's actually a pretty common concept) and thought about codegolf. Your task is to randomize a point/several points on a disc with ...
5
votes
5answers
510 views

Role-Playing Game Dice-Rolling

Background When playing an RPG such as Dungeons & Dragons, Pathfinder, or Paranoia, players each need a set of dice. You are hosting one such game this weekend, and some of the friends you ...
8
votes
2answers
353 views

Digitising the Library of Babel

The Library of Babel is defined as a universe in the form of a vast library containing all possible 410-page books of a certain format and character set. For the purposes of this question, each ...
7
votes
2answers
304 views

Simple single-player board game, expected score distribution

This is the first problem I've posted here; please post criticisms in comments. Summary A game board consists of a starting space, an ending space, and between them are ...
18
votes
4answers
784 views

Roll my D&D character's ability scores

In Dungeons and Dragons, some of the most important atributes of a character are the ability scores. There are 6 ability scores, for the six abilities. The abilities are Strength, Dexterity, ...
17
votes
15answers
1k views

Insta-Name… Just Add Coder!

In the English language, a surefire way to make a pronounceable nonsense letter combination is to make it entirely out of consonant-vowel pairs, e.g., Wu ko pa ha, or, Me fa ro, consonant first, ...
17
votes
8answers
1k views

Analyzing Earthquakes

Background The Random Domino Automaton is a toy model for earthquakes, inspired by cellular automata. In this challenge, your task is to simulate a simplified version of this model, and collect data ...
21
votes
16answers
4k views

Bitstring Physics

Background Yes, bitstring physics is a real thing. The idea is to construct a new theory of physics using only strings of bits that evolve under a probabilistic rule... or something. Despite reading ...
8
votes
2answers
616 views

Sorting for Bozos

Introduction This challenge is about three (bad) sorting algorithms: Bogosort, and two others variants that I came up with (but have probably been thought of by ...
21
votes
5answers
2k views

Random ASCII Art of the Day #5: Diamond Tilings

Mash Up Time! This is instalment #5 of both my Random Golf of the Day and Optimizer's ASCII Art of the Day series. Your submission(s) in this challenge will count towards both leaderboards (which you ...