cl-permutation
graph
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| cl-permutation | graph | |
|---|---|---|
| 4 | 1 | |
| 47 | 64 | |
| - | - | |
| 3.5 | 0.0 | |
| 10 months ago | 3 months ago | |
| Common Lisp | Common Lisp | |
| BSD 3-clause "New" or "Revised" License | MIT License |
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cl-permutation
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Permutation Iteration and Random Access
Here is Lisp code [1] that maps all sorts of combinatorial objects—permutations, bit sets, base-B integers, multi-set permutations, etc.—perfectly into the smallest set of integers [0, n-1] and back. (In a sense, it's a perfect hash.) This is used to efficiently solve combinatorial puzzles.
[1] https://github.com/stylewarning/cl-permutation/blob/master/s...
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Can a Rubik's Cube be brute-forced?
Note that in the unlikely event anyone wants to run the code in the post, the algorithm presented is still in an open PR, APIs change until merged, etc.
- Favorite Lisp project? Shameless plugs welcome & encouraged!
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Is Fisher-Yates Shuffle (aka Knuth Shuffle) implemented in some vetted CL library?
CL-PERMUTATION has random-perm to produce a random permutation of even, odd, or any parity.
graph
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Favorite Lisp project? Shameless plugs welcome & encouraged!
https://github.com/eschulte/graph/blob/master/dot.lisp http://csci.viu.ca/~wesselsd/courses/csci330/code/lisp/effects.cl
What are some alternatives?
sly - Sylvester the Cat's Common Lisp IDE
phel-lang - Phel is a functional programming language that transpiles to PHP. A Lisp dialect inspired by Clojure and Janet.
ultralisp - The software behind a Ultralisp.org Common Lisp repository
weblocks - This fork was created to experiment with some refactorings. They are collected in branch "reblocks".
shan - A declarative wrapper around your favourite system-wide package manager
doc - Flexible documentation generator for Common Lisp projects.
coalton - Coalton is an efficient, statically typed functional programming language that supercharges Common Lisp.
lisp-binary - A library to easily read and write complex binary formats.
pgloader - Migrate to PostgreSQL in a single command!
kandria - A post-apocalyptic actionRPG. Now on Steam!