Unanswered Questions
488 questions with no upvoted or accepted answers
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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
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answers
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Tree for PowerShell
For anyone reading this old question, this module has evolved and improved a lot since then. It has been fully rewritten in C# and uploaded to the PowerShell Gallery! If you would like to try it out:
<...
8
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IndexedArray Class: Uses a Dictionary Keys to Index a 2 Dimensional Array of Values
This class encapsulates a 2D Array and a Scripting Dictionary. Values are add or returned from to the Array using a Key and a ColumnIndex, e.g. ...
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7
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Modeling tabular structure in MSSQL to store data like Excel sheet applying Column inheritance
I've created this database structure to store tabular information (it's a simplification of my real structure but enough to show the point). In it I have Sheets and ...
7
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Agent-based Immutable Map
I am in the process of removing the last few pieces of mutable state from an F#-based distributed system. Some of the remaining mutable state is a ...
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7
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Bidirectional bijective hash map in C
I have this bidirectional hash map in C for dealing with bijective maps. Each key mapping consists of a primary key and a secondary key, and I can ask the data structure to give me a secondary key ...
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6
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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
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Recursive conversion from ExpandoObject to Dictionary<string, object> #2
Because my original question was lacking many details, I have been advised to ask a new question.
I will repeat the important parts of the original question and add examples etc to hopefully make it ...
CommunityBot
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6
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Android component animatable on its height
I'd like to have a code review for a component which is supposed to be animatable on its height. It's supposed to be a transitioning element.
I find it quite laggy on my phone.
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6
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Decode HTML Entities in VBA using regex and dictionary
I receive HTML-encoded text that includes named and numbered entities, and I need the decoded HTML.
There were just too many bad solutions for this online.
I use regex pattern ...
- 105
6
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815
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Pseudo-parallel depth-first search
I'm writing a small program that generates a file containing an adjancency matrix, it then reads from that file, constructs a graph and does something like a parallel depth-first search (dfs) on it.
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- 14k
6
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Implement two level caching using spring's cache abstraction Cache and CacheManager
Details about spring's caching framework are here. When I was reading this link, I thought the composite cache mentioned there was one that used levels of caching based on the order given to the ...
- 35k
6
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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
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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
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- 30.2k
5
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A new Dictionary for VBA
The latest version of the Dictionary class presented in this question is available in the VBA-FastDictionary repository under the latest release.
Motivation
I ...
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