Questions tagged [code-generation]
For challenges where answers are expected to generate code.
16
votes
7answers
2k views
Write the longest period iterating quine bounded by 500 bytes
Your job is to create the longest period iterating quine, where the length of each program in the sequence is bounded by 500 bytes.
That is, if you repeat the following steps:
Start with your ...
104
votes
40answers
29k 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 ...
31
votes
6answers
2k views
Make the largest infinity that you can!
The ordinal number system is a system with infinite numbers. A lot of infinite numbers. So many infinite numbers that it literally does not have an infinity to represent its own infiniteness. The ...
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, ...
35
votes
73answers
5k views
Generate ;# code
Related to: Make a ;# interpreter
In the above linked challenge the task was to create an interpreter for the esoteric language ;#.
The ...
30
votes
14answers
3k views
Generate TeX to typeset Sierpinski Triangle Fractal
Challenge
Write code that outputs TeX (LaTeX) math-equation code (given below) that will typeset Sierpinski Triangle Fractal of 5 levels. Shortest code wins.
Details
TeX (and friends like LaTeX, ...
35
votes
55answers
5k views
Generate 100 Java Tuple classes
Write a script that writes to standard output, or your language's equivalent, 100 lines of (valid) Java code that begins with:
...
35
votes
27answers
3k views
Code-generator with unique characters
Challenge
Your task is to write a piece of code that outputs another piece of code. That code must in turn output yet another code until the final code outputs the integer 1. The chain ends the first ...
5
votes
1answer
326 views
Generate an expression yielding near-equidistributed result
Create a program (any language) which, given positive integer m, outputs a valid C expression that:
Uses a single variable x ...
10
votes
5answers
1k views
Compose two Brainfuck programs
Given 2 brainfuck code snippets A and B, output some brainfuck code C which has the same ...
29
votes
72answers
3k views
Script that outputs a script that prints a given input
Write a piece of code that takes a string as input, and outputs a piece of code in the same language that, when run, will output the initial input string.
It must be able to handle any combination of ...
22
votes
30answers
4k views
Produce a m*n table in HTML
Input :
Two decimal integers m and n that respectively give the number of rows and columns of the table.
...
17
votes
13answers
2k views
Create a FizzBuzz compiler
Welcome to the world of compiler golf. Your task is to write a program that generates another program to play a variant of FizzBuzz on spec.
Your compiler
Write a compiler that generates variants of ...
5
votes
4answers
276 views
Program Sequence Generator
Your challenge is to implement a cyclic Program Sequence Generator (PSG) in a language of your choice.
Given a language, L, a PSG in L is a program in L that outputs a PSG in L. Some properties of a ...
32
votes
7answers
1k views
Three polyglots, two period-two quines, and one code-golf challenge
Produce a program A such that running it in language A produces Program B, and running program A in language B produces program C.
Program B, when run in language B produces Program A, and running ...
18
votes
11answers
1k views
Output a program that outputs a program … that outputs PPCG
Challenge:
Write a code that, when executed will output the source code of a second program that can be executed in another language. The second program should output the source code of a third ...
66
votes
18answers
9k views
Rube Goldberg Hello World
For this golf, you will need to use more than one language.
The task
A Rube Goldberg machine is a contraption that takes an enormous number of complicated steps in order to execute a very simple ...
6
votes
2answers
448 views
Generate all halting Smallfuck programs of length n
Your task is to write a program that, given a number n, returns a list of all valid, halting Smallfuck programs of length n, in any order.
Actually, we're using a variation of Smallfuck called F2, ...
28
votes
2answers
713 views
Hyper about quines
Inspired by Hyperprogramming: N+N, N×N, N^N all in one.
Thanks to @MartinEnder and @trichoplax for their help in the sandbox.
Definitions
Hyperquines
Define a hyperquine of order n as a quine-...
19
votes
18answers
2k views
Write a Metaquine
A metaquine is a program which is not a quine, but whose output, when run as a program in the same language, is a quine.
The goal of this challenge is to write a metaquine. This is code-golf, so ...
18
votes
8answers
1k views
Generalized Quine Generator
The Challenge
In this challenge, you specify a source language S and a target language T. Your task is to write the following ...
26
votes
8answers
1k views
Convert braces to Right Hand Brace (Sad Brace)
Right hand brace is a style of code bracketing in which curly braces and semicolons are all aligned to a single point on the right side of a a file.
Generally, this is considered bad practice, for ...
13
votes
11answers
1k views
A Program that Prints Programs
Challenge
Your goal is to write a program that prints another program.
That printed program should print another program, and the new program should print another program, until the end.
Rules
Each ...
18
votes
9answers
568 views
Make Wise Numbers
Wise is a simple bitwise language I designed a while back. It is based around Python's bitwise operations. It has several operations most of these are the same or very similar to the equivalent ...
4
votes
1answer
293 views
Insert a simulated Ken Thompson virus into a program
A Ken Thompson virus is a virus that infects your compiler and other programs. Since it infects all your tools, you can not detect it without using tools from before the virus was introduced.
Your ...
15
votes
2answers
262 views
Solve a Stack State Diagram
A stack state diagram shows how the values on one stack are changed into the other. For example, this is a stack state diagram:
3 0 2 1 0
This means that there ...
25
votes
15answers
861 views
Transpile WordMath
We've all seen those online "maths hax" that look like this:
Think of a number, divide by 2, multiply by 0, add 8.
And, by magic, everyone ends up with the ...
2
votes
7answers
818 views
Kolmogorov Complexity Meta Golfer
Mike Bufardeci (Pyth) - 175 bytes
Leo (Retina) - 175 bytes
devRicher (Lua) - 182 bytes
Peter Taylor (CJam) - Waiting for clarification
Lyth (C++11) - Waiting for clarification
Edit: Several changes ...
16
votes
9answers
758 views
Grow Till It's 2017
In this challenge you'll be building a program that grows as it traverses through the ages… Until it's 2017.
Challenge
Whenever this challenge description says “program”, you can ...
18
votes
9answers
737 views
The meta-polyglot quine
In my time on PPCG, I've noticed that quine problems and polyglot problems are quite popular. Also, meta-solutions to problems, that is, scripts which generate a program which is the solution to a ...
5
votes
3answers
369 views
Quine permutation group [duplicate]
Write a program or function which, when run, outputs another program or function which is valid in the same language as the original program, and which itself will output another program or function ...
25
votes
6answers
3k views
Big big numbers
Whilst trying to golf several of my answers, I've needed to write large integers in as few characters as possible.
Now I know the best way to do that: I'll be getting you to be writing this program.
...
12
votes
17answers
2k views
Generate /* line number comments */
Your task is to write a program (or function) that will take a string as input and append text to the beginning of every line that satisfy the following rules:
The text appended must contain the line ...
10
votes
4answers
455 views
Write a Semiquine
Suppose you have 2 languages, A and B. A string s is a semiquine in ...
5
votes
3answers
742 views
Quit Whining; Start Quining
Goal:
Write a function or program that, given an integer n, will output a program in the same language that is a quine with a period of ...
25
votes
10answers
3k views
Chaining Programs
Challenge
In this challenge, you will be writing the first program, p1, of an infinite sequence of programs, in which running pn outputs/generates program pn+1. When concatenating the first n >= 2 ...
17
votes
2answers
317 views
Given a truth table, output a Stackylogic program that satisfies it
Stackylogic is a programming language I made up in a previous challenge: Run Stackylogic. Read that post for full details and examples, but here is how it works paraphrased:
Stackylogic takes ...
3
votes
3answers
598 views
Do not repeat yourself
Inspired by this challenge
Given a number m, output a program that prints out the string Do not repeat yourself.
Now for the ...
10
votes
16answers
1k views
Code golf for the lazy
Your goal in this code golf is to take two strings, language and code (if the golfed code you wrote for this is multiline, then ...
-3
votes
3answers
564 views
No Quine Built In? No Problem! [closed]
Are you tired of languages with built in quining techniques?
Your challenge, should you choose to accept it, is to add a built-in quine feature to the language of your choice.
Task
Given some ...
1
vote
1answer
255 views
Meta Obfuscate a String [closed]
There are numerous reasons for trying to obfuscate input. These include preventing decompiling, and being a nuiscance.
With this in mind your challenge should your choose to accept it is to write a ...
7
votes
5answers
646 views
Golf me an HQ9+ Compiler [duplicate]
Your task is "simple" should you choose to accept it.
Write an HQ9+ compiler in a language of your choice.
HQ9+ has four commands (as you may be able to tell) H prints "Hello, World!" Q prints out ...
17
votes
2answers
937 views
Compile Regexes
In this task you have to write a program that reads a regular expression and generates another program that outputs whether an input string is accepted by that regular expression. The output must be a ...
31
votes
11answers
2k views
1-up your average quine
A 1-up quine is a program which is very similar to a quine. The one major difference is that instead of printing itself once, when n copies of the program are concatenated, the result prints the ...
21
votes
7answers
896 views
Generate Programs in Increasing size
In this challenge, you will write a program which outputs a program which is the double the length of the original program. The outputted program should output a new program a program double its ...
-6
votes
2answers
322 views
Stop Internet Warming! [closed]
Task
Write a program that will output another distinct program, and so on, while using as few distinct characters (and as few bytes) as possible.
For example, program 1 should output program 2, and ...
18
votes
4answers
768 views
Growing Quine Sequence
You are to write a sequence of 10 programs p1 p2 ... p10 that satisfy the following properties:
pK prints ...
28
votes
2answers
856 views
Convert Brainfuck to MarioLANG
MarioLANG is a two-dimensional programming language where the source code resembles a Super Mario Bros. level. Furthermore, its instruction set is very similar to Brainfuck's. This means that ...
1
vote
1answer
576 views
Escape control characters in a C string
C/C++ use double quotes "" for making string literals. If I want the double-quote itself, or certain other characters, to appear in the string, I have to escape ...
11
votes
8answers
901 views
Generate a Brainf_ck program that outputs a string of given length
Your friend is trying to break into a vault that has a peculiar locking system: it requires a certain number of gentle knocks in a particular spot. Your friend discovered the number (which is in the ...
