Unanswered Questions
385 questions with no upvoted or accepted answers
23
votes
0
answers
668
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Multiplying big numbers using Karatsuba's method
The Karatsuba algorithm, first published in 1962, aims to speed up the multiplication of big numbers by reducing the number of 'single-digit-multiplications' involved.
Because of its complexity (...
- 4,773
9
votes
1
answer
386
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Metropolis Monte Carlo Sampler in Rust
the following is an implementation of the standard Metropolis Hastings Monte Carlo sampler. You can read more about it here.
At the end I am going to give you a link to the Rust playground, so you ...
CommunityBot
- 1
8
votes
0
answers
179
views
Implementing Simple Diff in Rebol
I've taken a crack at implementing Simple Diff in Rebol (versions 2 and 3). Simple Diff works by finding the longest common sequence in two series, then recursively applies itself either side of this ...
- 489
7
votes
0
answers
546
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A* Algorithm in F#
Inspired by this post I looked up A* on wikipedia and went on with my own implementation as seen below where I try to mimic the pseudocode on Wikipedia but in a recursive manner.
I would like any ...
CommunityBot
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6
votes
0
answers
107
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Chapter 8 Challenge: Add employee names to a department
The boring but exciting challenge:
Using a HashMap and HashSet, create a text interface to allow a user to add employee names ...
- 85k
6
votes
0
answers
167
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Efficiently generate distinct subsets which sum to a particular value
Related: Find all distinct subsets that sum to a given number
This code is supposed to efficiently generate all subsets of a list such that the subset's values sum to a particular target value. For ...
- 161
6
votes
0
answers
122
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K nearest neighbours algorithm
Here is a project that I worked on for a few days in June 2020. Since the algorithm is extremely slow, I looked into methods in order to parallelize operations but did not obtain any satisfactory ...
- 145k
6
votes
0
answers
271
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Selection sort with reduced comparison count: Python iteration 2
Follow up to Selection sort with reduced comparison count - semi-final Iteration?
My goal (and excuse not to tag reinventing…) is to have presentable code to argue the viability of reducing the number ...
- 7,209
6
votes
0
answers
2k
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Generic sliding window
The code implements fully generic sliding window with linear complexity. It should usually be paired with transforming iterator to reach full potential.
Sliding window is a grouping of elements by ...
CommunityBot
- 1
6
votes
0
answers
643
views
Fowler��Noll–Vo hash function in Lua
I recently coded this FNV-1a hash function in Lua. Are there any apparent performance improvements that could be implemented?
...
CommunityBot
- 1
6
votes
0
answers
423
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Translating CFRM algorithm from Java to Clojure and improving performance
Counterfactual Regret Minimization is an algorithm that can be used to find the Nash Equilibrium for games of incomplete information. I have tried to adapt the exercise from here to Clojure. You can ...
- 11.3k
6
votes
0
answers
453
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Implementing recursive filters with Haskell/Repa
I recently learned Haskell, and I am trying to apply it to the code I use in order to get a feeling for the language.
I really like the Repa library since I manipulate a lot of multi-dimensional data....
- 35k
5
votes
0
answers
106
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Dial's heap in Java for integer priority queues
(The entire project is here.)
Intro
I have this priority queue data structure for non-negative integer priority keys. I recall that it is called Dial's heap.
Code
Implementation
...
- 30.2k
5
votes
0
answers
189
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Dijkstra's algorithm in Perl
I have this Perl module project.
My implementation of the Dijkstra's algorithm follows:
...
- 145k
5
votes
0
answers
831
views
Selecting child contours in OpenCV
I'm really new to OpenCV. :) I have been working on this for almost an entire day. After hours of sleepless work I would like to know if I can further improve my code.
I have written some code to ...
