Commons.Collections.SquareList 1.0.6

dotnet add package Commons.Collections.SquareList --version 1.0.6
NuGet\Install-Package Commons.Collections.SquareList -Version 1.0.6
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="Commons.Collections.SquareList" Version="1.0.6" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Commons.Collections.SquareList --version 1.0.6
#r "nuget: Commons.Collections.SquareList, 1.0.6"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install Commons.Collections.SquareList as a Cake Addin
#addin nuget:?package=Commons.Collections.SquareList&version=1.0.6

// Install Commons.Collections.SquareList as a Cake Tool
#tool nuget:?package=Commons.Collections.SquareList&version=1.0.6

Commons.Collections.SquareList


Managed Commons library containing the SquareList specialized collection.

Now requires .NET 6.0/C# 10 to build

Loosely based on an article published in the May 2013 issue of Dr Dobb's Journal, by Mark Sams. His implementation in C used circular doubly-linked lists of doubly-linked lists, I've reimplemented using a List of Dynamic Slices backed a single Big Array, It uses a lot less memory than linked lists, but inserts in crammed sets can have ripple effects with worst case O(n).

This implementation allows for multiple instances of the same value to be inserted, and then deleted one-at-a-time or wholesale.

Thinking about performance, search for counting/existence is done bidirectionally, but removal scans only in the forward direction, to have a stable behavior (remove the first found) when duplicates exist.

The SquareList is a structure that is particularly useful in applications that frequently require the current minimum and maximum values, as they both can be found in constant time, even accounting for deletions. This implementation performs insert/delete/find operations within a worst-case running time of O(sqrt(n)) [In truth O(n) for inserts]. Values are always kept in ascending order, so traversing it in that order is natural and performant.

Commons.Collections.SquareList 1.0.6 is available at Nuget: Commons.Collections.SquareList.

Targets in the package

Release .NET Standard 1.0 .NET Standard 2.1 .NET 6.0
1.0.0
1.0.2
1.0.3
1.0.4
1.0.5
1.0.6

Performance

Some performance testing, all times in ms (updated and now using release version of nuget, on .NET 6.0):

SortedList (all times in ms) [.NET 6.0]

Initial Size Creation Deletes Inserts Searchs Min Max
1000 1 1 0 0 16 19
1779 0 0 0 0 15 19
3163 0 0 0 0 16 19
5624 0 0 0 0 15 13
10000 0 1 1 0 6 3
17783 1 1 2 0 3 3
31623 1 2 3 0 3 3
56235 2 4 5 0 3 3
100000 4 9 10 0 3 4
177828 7 16 19 0 3 4
316228 17 39 38 0 3 3
562342 26 188 115 0 3 3
1000000 47 363 127 0 2 3
1778280 77 575 302 0 3 3
3162278 144 1050 809 0 3 3
5623414 261 1893 1528 0 3 3
10000000 484 3421 2930 0 3 2
17782795 874 6045 5311 0 3 3
31622777 1598 10743 9482 1 3 3

SquareList

Initial Size Creation Deletes Inserts Reinserts Searchs Min Max CutInHalf Shrink
1000 2 3 2 3 0 0 0 1 1
1779 0 0 1 0 0 0 0 0 0
3163 0 1 1 0 0 0 0 0 0
5624 0 1 1 0 0 0 0 0 0
10000 0 1 1 1 0 0 0 0 0
17783 0 1 1 1 0 0 0 0 0
31623 0 1 1 2 0 0 0 0 0
56235 1 1 1 3 0 0 0 0 0
100000 1 2 1 5 0 0 0 0 1
177828 2 3 2 10 0 0 0 0 1
316228 6 3 3 19 0 0 0 0 2
562342 11 4 4 31 0 0 0 1 5
1000000 15 2 1 51 0 0 0 0 6
1778280 27 6 5 83 0 0 0 2 10
3162278 45 8 8 159 1 0 0 3 18
5623414 72 9 8 287 1 0 0 4 34
10000000 129 12 10 500 1 0 0 9 60
17782795 237 17 14 890 1 0 0 14 108
31622777 412 21 18 1584 1 0 0 24 189

License: MIT

See LICENSE

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 is compatible.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp1.0 was computed.  netcoreapp1.1 was computed.  netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard1.0 is compatible.  netstandard1.1 was computed.  netstandard1.2 was computed.  netstandard1.3 was computed.  netstandard1.4 was computed.  netstandard1.5 was computed.  netstandard1.6 was computed.  netstandard2.0 was computed.  netstandard2.1 is compatible. 
.NET Framework net45 was computed.  net451 was computed.  net452 was computed.  net46 was computed.  net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen30 was computed.  tizen40 was computed.  tizen60 was computed. 
Universal Windows Platform uap was computed.  uap10.0 was computed. 
Windows Phone wp8 was computed.  wp81 was computed.  wpa81 was computed. 
Windows Store netcore was computed.  netcore45 was computed.  netcore451 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.
  • .NETStandard 1.0

  • .NETStandard 2.1

    • No dependencies.
  • net6.0

    • No dependencies.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
1.0.6 407 8/10/2022
1.0.5 419 1/21/2022
1.0.4 260 11/15/2021
1.0.3 282 11/15/2021
1.0.2 350 11/10/2020
1.0.0 519 5/31/2019

Packaging for netstandard1.0;netstandard2.1;net6.0