Questions tagged [compression]
Related to compressing or decompressing arbitrary data. Challenges which relate to compressing a single specific input should instead be tagged [kolmogorov-complexity]
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Implement the RegPack decompressor
The JavaScript compressor RegPack uses a very simple string compression algorithm. Given a piece of code, it will make a list of characters that aren't used in that code and use them to delimit ...
17
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14
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I want 8 bits for every character!
This is the reverse of this challenge.
Given an encoded list of codepoints and the characters used to encode it, you need to decompress it to its original string.
For example, given the encoded list <...
10
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7
answers
535
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Random Pixels Image Compression
Challenge:
Given an integer \$n\,ドル guaranteed to be \$\geq2\$ and a power of 2, we are going to draw multiply boards either side-by-side or below one another, where the first has dimensions of \$n\$ ...
24
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17
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Who needs 8 bits for one character?
Given a string and the characters used to encode it, you need to compress the string by only using as many bits as each character needs. You will return the character codes for each character needed ...
-4
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1
answer
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Program compressor
Choose a language and write a program in the language that:
Take a valid program of the language as input,
Output a string(bytearray, etc.). It needn't be a valid program.
Only finite valid inputs ...
14
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8
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Compress and decompress
Your task is to make a bidirectional compressor. It takes a list of bytes as input and returns a list of bytes as output. It has the property than whenever it is iterated twice it returns the original ...
11
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2
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820
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Smallest possible Scratch 3.0 project file (SB3)
The objective is to make the smallest SB3 file that can simply be imported into Scratch 3.0 without a "The project file that was selected failed to load" error. Any means can be used, like ...
12
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3
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Jelly compression quine
The golfing language Jelly has a very complex and clever string compression system which I'm not going to go into depth about here. You can find a very good explanation here.
Basically, Jelly's string ...
14
votes
2
answers
559
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What's my TIO uniqueness?
Try it online! currently has 680 listed languages, all of which are searchable. For most of those languages, when searching for it, you don't have to enter the entire string. For example, entering <...
50
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7
answers
7k
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Reverse Zip Bomb
A zip bomb is a compressed file, designed so that unpacking it yields the biggest file possible. These are fairly well known, and there are examples of 42 KB files which expand into multiple petabytes ...
21
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3
answers
682
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Decompress an integer, Jelly style
Jelly has compressed string literals, using the "...» delimiters. The way these work is by interpreting the ... as a base-250 ...
12
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9
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2k
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Naïve compression
using Prefixed Length Code
We are going to implement a compression of text (string, array/list of characters/bytes) by simple substitution of each character by a binary code, based on the frequency of ...
10
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5
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Breaking Bad - ize any string (compression) [duplicate]
The TV series "Breaking Bad" replaced the letters Br and Ba with a periodic-table like representation, printing [Br35]eaking [Ba56]d.
Create a program ...
32
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20
answers
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Golf a golf chart
Given a distance in meters as an integer \60ドル\le d \le 260\,ドル return the number of clubs that may be used according to the following arbitrary chart, where both \$min\$ and \$max\$ are inclusive:
<...
25
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14
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Print a Ternary Value
Put simply, you are to print out the following number:
...