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Signal R and Jquery Problem
Category: JavaScript

When you are developing signal R in asp.net, make sure that it's using jQuery -1.10.2 and that it's ...


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How to optimize Search Engines to Rank Dynamic Dat ...
Category: Computer Programming

Dynamic data is kind of hard to inde ...


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Tips and Trick Developing in C# and Dotnet 8
Category: Other

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Linked Server and SSIS
Category: Servers

<a href="https//docs.microsoft.com/en-us/sql/relational-databases/linked-servers/create-linked-serv ...


Views: 357 Likes: 117
The difference between iptable and nftables
Category: Research

Iptables and nftables are two powerful network security tools used in Linux systems. While they ...


Views: 0 Likes: 40
DotNet Software Development and Performance Tools
Category: .Net 7

[11/11/2022] Bombardia Web Stress Testing Tools<a h ...


Views: 0 Likes: 75
Nginx: Kill all Nginx process on Linux and Run a c ...
Category: Linux

Nginx Tips and Tricks Tip 1. Kill all process for nginx [If there are pr ...


Views: 893 Likes: 110
How to maintain Health Habits in 2024
Category: Research

Maintaining healthy habits is essential for overall well-being and longevity. In 2024, it will b ...


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.NET Developer Needed in OH
Category: Jobs

Role You Wi ...


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SQL table Design Best Practices
Category: SQL

When working with SQL tables, sometimes it is frustrating to find no columns with "Date" the data wa ...


Views: 280 Likes: 101
[Simplex and Strong duality] Algorithms
Category: Algorithms

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Views: 257 Likes: 113
ASP.NET 8 Best Practices: Coding, Performance Tips ...
Category: .Net 7

In this chapter, we will explore various best practices and performance tips to enhance your ASP. ...


Views: 368 Likes: 98
How to Find Good Drawing Paper
Category: Art

Advanced Section <p clas ...


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What are the best way to write high performant C# ...
Category: Technology

Google Bard Response There are many ways to write high-performance C# code. ...


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SQL 0x80004005  Description: "Cannot continue the ...
Category: SQL

Question How do you solve for t ...


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Everything Access Tutorials
Category: Technology

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[JSON Data and Percent Sign] Passing big data with ...
Category: Databases

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Views: 306 Likes: 74
SQL Server Import and Export Wizard Error: Data co ...
Category: SQL

Problem Error 0xc02020a1 Data Flow Task 1 Data conversion failed. The data co ...


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How to Use a well Known Drawing Method to Achieve ...
Category: Art

The Grid Method is a method of drawing an outline from a reference photo onto paper. T ...


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Tips Tricks When Drawing Realistic Photo
Category: Art

One of the important mistakes to avoid when drawing a detailed picture is to damage th ...


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Front-End Bootstrap Development Notes Tips and Tri ...
Category: .Net 7

How to remove borders from a Boostrap 5 Table Do you find yourself adding "border-0" to e ...


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Google like a pro
Category: Technology

As a Software Developer, it is important to know how to find good information in the fastest manner. ...


Views: 311 Likes: 101
Clean JSON Data in Excel
Category: Databases

When working with data, it is important to know tips and tricks that will save you a lot of time. As ...


Views: 320 Likes: 105
Linked Server and SSIS
Category: Servers

<a href="https//docs.microsoft.com/en-us/sql/relational-databases/linked-servers/create-linked-serv ...


Views: 347 Likes: 111
Required: Fix ePub and resubmit
Category: Questions

Question Does anyone know how to resolve thi ...


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Here is what is going on this week at ErnesTech.co ...
Category: General

Hello readers,Inside this article, you will read about "Why ErnesTech is Developing o ...


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MySQL Database and Composer Commands
Category: SQL

How to restore all database backed up with mysqldump<span style="backgro ...


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How to Use Spans in C-Sharp ( Stackalloc, Heap and ...
Category: .Net 7

Read about Spans ...


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Drupal 8 Services and Services Container
Category: Technology

Drupal 8 Services and Services Con ...


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Entity Framework Core 6 and 7 Tips and Tricks
Category: Entity Framework

Interceptors in EF Core 7- Use the TPC (Table per Concrete) Mapping strategy (prefer ...


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Error 0xc0202009: Data Flow Task 1: SSIS Error Cod ...
Category: Servers

Question I came about this SQL Server ...


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Determine if two strings are anagrams with C# .NET
Determine if two strings are anagrams with C# .NET

Two strings are anagrams if they are made up of the same set of characters. Examples “hello” and “loleh”“123123” and “312312”“qwerty” and “wretqy” The degree of “anagram-ness” can vary ignore case?ignore non-numeric characters?ignore whitespace? In this post we’ll only consider word-characters only and the comparison will be case-insensitive to make the problem more interesting. We’ll write a function that accepts two integers and returns a boolean true if the strings are anagrams, otherwise false. We’ll look at two solutions out of many that exist out there using a character mapusing string sort What is a character map? It is a map where the key is of type char and the value if of type integer. We collect the unique characters of a string and count how many times each character occurs in the string. E.g. CharCount‘f’2‘g’1‘i’2‘d’1‘o’1 We do that for both strings and compare the counts of each unique character. Let’s start with a skeleton using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Text.RegularExpressions; using System.Threading.Tasks; namespace Algorithms { public class Anagram { public bool AreAnagrams(string first, string second) { if (first == null || second == null) return false; return AreAnagramsWithCharMap(first, second); //return AreAnagramsWithSortedStrings(first, second); } private bool AreAnagramsWithCharMap(string first, string second) { return false; } private bool AreAnagramsWithSortedStrings(string first, string second) { return false; } private Dictionary<char, int> MakeCharacterMap(string input) { string cleaned = CleanInput(input); return cleaned.Distinct().ToDictionary(c => c, c => cleaned.Count(s => s == c)); } private string CleanInput(string input) { return Regex.Replace(input, @"[_]+|[^\w]+|[\d-]+", "").ToLower(); } } } We start by some null-checking and return false if either of the two inputs is null. The AreAnagramsWithCharMap function has been wired up but it’s not yet implemented. The function for the second solution AreAnagramsWithSortedStrings has also been prepared. We have two private functions as well CleanInputthis one takes a string and strips all underscores, white space and non-word characters from it and returns the lower-case version of itMakeCharacterMapfirst we clean the incoming input stringsecond we use a couple of LINQ operators to build the character mapDistinct() to gather the unique characters from the stringToDictionary() to build the map itself, the key will be the character itself and for the value we count the number of occurrences of that character in the string Let’s look at the implementation of AreAnagramsWithCharMap private bool AreAnagramsWithCharMap(string first, string second) { var charMapFirst = MakeCharacterMap(first); var charMapSecond = MakeCharacterMap(second); if (charMapFirst.Count != charMapSecond.Count) { return false; } return charMapFirst.All(kvp => charMapSecond.ContainsKey(kvp.Key) ? kvp.Value == charMapSecond[kvp.Key] false); } We first create the two character maps. If they differ in size then we can immediately return false. It means that one of the strings has at least one more character than the other so it’s pointless to continue. Otherwise we make use of the All LINQ operator which return true of all the elements of a collection fulfil a certain condition. The condition is based on two parameters whether the character map contains the character as the key in the first placewhether that character occurs with the same frequency as in the source map If both conditions are fulfilled for all characters in the character maps then we return true. Here’s a set of unit tests using System; using System.Collections.Generic; using System.Text; using Microsoft.VisualStudio.TestTools.UnitTesting; namespace Algorithms.Tests { [TestClass] public class AnagramTests { [TestMethod] public void AreAnagramsTests() { Anagram a = new Anagram(); Assert.IsTrue(a.AreAnagrams("hello", "___ hllOe!! 456 ???")); Assert.IsFalse(a.AreAnagrams("sdfs", null)); Assert.IsFalse(a.AreAnagrams(null, "sdfs")); Assert.IsFalse(a.AreAnagrams(null, null)); Assert.IsFalse(a.AreAnagrams("qwerty", "yewr")); Assert.IsFalse(a.AreAnagrams("qwerty", "qwertyuiop")); Assert.IsTrue(a.AreAnagrams("? par**lIame%%nt !", "partIAL men")); Assert.IsTrue(a.AreAnagrams("a gentleman", "elegant man")); } } } The will all pass. The second solution takes the two cleaned strings, puts them in order and compares them. This solution is slightly less performant than the first one due to the string ordering though. The map comparison doesn’t involve any ordering so it’s somewhat quicker. Here’s the implemented function private bool AreAnagramsWithSortedStrings(string first, string second) { string sortedOne = string.Concat(CleanInput(first).OrderBy(c => c)); string sortedTwo = string.Concat(CleanInput(second).OrderBy(c => c)); return sortedOne == sortedTwo; } We again clean the input string and then call the OrderBy LINQ operator. It returns an ordered collection of characters from the string, i.e. not an ordered string. Hence we need to embed this bit of code in string.Concat so that we build the string again from the characters. Finally we simply compare the two strings. Wire up this function from the main one and rerun the unit tests. They will still pass. public bool AreAnagrams(string first, string second) { if (first == null || second == null) return false; //return AreAnagramsWithCharMap(first, second); return AreAnagramsWithSortedStrings(first, second); }


How to draw an eye in eight steps
Category: Art

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In this blog post, I will ex ...


Views: 447 Likes: 104
How to Optimize SQL Query in SQL Server
Category: Other

There are several ways to tune the performance of an SQL query. Here are a few tips < ...


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Attach and Detach Database Errors
Category: Databases

<ul style="margin-right 0px; margin-bottom 1em; margin-left 30px; padding 0px; border 0px; font ...


Views: 289 Likes: 95
SQL Server Tips and Tricks
Category: SQL

Error Debugging Did you know you could double click on the SQL Error and ...


Views: 0 Likes: 44
Why you should choose HomeAssistant as your Home A ...
Category: Research

Home automation is becoming increasingly popular as people look for ways to make their homes mor ...


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C-Sharp 11 Tips and Tricks
Category: Research

Linq- Did you know you could compair two sequences by using sequence operations li ...


Views: 90 Likes: 58
How to Scale SQL Server Google Bard vs ChatGPT Res ...
Category: Servers

Google Bard There are two ways to scale SQL Server scaling up and scaling ...


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Chapter 7: Research and Future Directions
Category: Lipedema

Research into lipedema is ongoing, with scientists and healthcare professionals striving to bette ...


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Kint Debugging not Showing (Drupal 8 Web Developme ...
Category: Technology

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Views: 263 Likes: 87
Front-End Development Tips and Tricks
Category: Front-End

1. Did you know you could make a form (Html Tag) a parent of different other <st ...


Views: 45 Likes: 61
Solved!! Ruby on Rails Server Wont Start Error
Category: Technology

When you run "rails s -b 0.0.0.0" into a bash command console and the Rails Server does not start, l ...


Views: 365 Likes: 92
What is the best practices for creating a robots.t ...
Category: Research

Creating a robots.txt file is an important step in protecting your website from malicious bots a ...


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How to Use Different Shades of pencils and Techniq ...
Category: Art

Shading is a very important skill to have when drawing realistically.&nbsp; In fact, m ...


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What is the best way to learn AI in 2024?
Category: Research

IntroductionArtificial Intelligence (AI) has been around for decades, but it's only in r ...


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Visual Studio 2019 Development
Category: Tools

Visual Studio Development Tips ...


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WLED and BTF-Light Strip and ESP 32 Configuration
Category: Home

1. Make sure that you have flashed wled software on ESP 32 using install.wled.me&nbsp; &nbs ...


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How to Prompt ChatGPT and Google Bard for Best Res ...
Category: Machine Learning

Here are some tips for prompting Google Bard Be specific. The more specific you a ...


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Software Development Architecture and Good Practic ...
Category: System Design

These notes are used to drill down into the most op ...


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What You Need to Know about Candles
Category: Candles

There are a few important things to know about candles, especially if you are using them for the ...


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