Tag Archives: combinatorics

Find two sets where the median of one is the mean of the other and vice versa in C#

Posted on July 23, 2018 by RodStephens

For an upcoming book, I wanted to find sets where the mean (average) of one is the median (middle value) of the other and vice versa. I wanted to avoid trivial examples such as {1, 1, 1} and where the … Continue reading →

Posted in algorithms, combinatorics | Tagged algorithms, C#, C# programming, combinatorics, example, example program, mean, median, sets, statistics, Windows Forms programming | Leave a comment

Display team names for a round robin tournament in C#

Posted on May 24, 2018 by RodStephens

The example Generate a schedule for a round robin tournament in C# explains how you can generate a schedule for a round robin tournament. This example simply adds the ability to display the schedule using the team names instead of … Continue reading →

Posted in algorithms, combinatorics, mathematics | Tagged algorithms, C#, C# programming, combinatorics, example, example program, mathematics, round robin, round robin tournament, schedule, tournament, Windows Forms programming | Leave a comment

Linkback to the Secret Santa Problem

Posted on September 27, 2017 by RodStephens

Tom left a comment to my post Calculate the number of secret Santa permutations in C#. He used that example to build a site in JavaScript explaining how the algorithm works. It’s a pretty cool little page. Drop by and … Continue reading →

Posted in algorithms, combinatorics, mathematics | Tagged algorithms, C#, C# programming, combinatorics, derangements, example, example program, linkback, mathematics, permutations, secret Santa, secret Santa permutations, selections, Windows Forms programming | Leave a comment

Book Errata Page: The C# Helper Top 100

Posted on September 4, 2017 by RodStephens

This is the errata page for my book The C# Helper Top 100, The 100 most popular posts at csharphelper.com. If you find mistakes, please post them here in the Leave a Reply box at the bottom of the page. … Continue reading →

Posted in .NET, algorithms, books, C#, C# programming | Tagged .NET, algorithms, animation, API, books, C#, C# Helper, C# programming, classes, clipboard, combinatorics, cryptography, curve fitting, dialogs, drag and drop, drawing, events, example, example program, Excel, files, fractals, FTP, graphics, image processing, interop, interoperability, mathematics, multimedia, Office, printing, Rod Stephens, serialization, system, threading, tips, tools, Windows Forms programming | 2 Comments

Book Discussion Page: The C# Helper Top 100

Posted on September 4, 2017 by RodStephens

This is a discussion page for my book The C# Helper Top 100, The 100 most popular posts at csharphelper.com. Please post questions, thoughts, and suggestions here in the “Leave a Reply” box at the bottom of the page. I … Continue reading →

Table of Contents: The C# Helper Top 100

Posted on September 4, 2017 by RodStephens

This is a brief summary of the book’s table of contents. Introduction Part I. Serialization 1. Read a CSV File into an Array (1) 2. Use JSON to Serialize and Deserialize Objects (49) Part II. Graphing 3. Draw a Graph … Continue reading →

New Book: The C# Helper Top 100

Posted on September 4, 2017 by RodStephens

I’m happy to announce my latest book, The C# Helper Top 100, The 100 most popular posts at csharphelper.com. It describes the 100 most popular posts on the C# Helper web site. This is my 32nd book and my second … Continue reading →

Posted in .NET, algorithms, books, C#, C# programming | Tagged .NET, algorithms, animation, API, books, C#, C# Helper, C# programming, classes, clipboard, combinatorics, cryptography, curve fitting, dialogs, drag and drop, drawing, events, example, example program, Excel, files, fractals, FTP, graphics, image processing, interop, interoperability, mathematics, multimedia, Office, printing, Rod Stephens, serialization, system, The C# Helper Top 100, threading, tips, tools, Windows Forms programming | Leave a comment

Generate words of a given length in C#

Posted on August 5, 2016 by Rod Stephens

The example Generate three-letter words in C# uses three nested for loops to generate words that contain three letters. This example uses the following code to generate words of any given length. // Generate words with num_letters letters. private List … Continue reading →

Posted in algorithms, mathematics | Tagged algorithms, C#, C# programming, combinations, combinatorics, example, example program, generate words, letter combinations, mathematics, three-letter words, Windows Forms programming, words | 3 Comments

Generate three-letter words in C#

Posted on August 5, 2016 by Rod Stephens

This example uses the following very simple code to generate three-letter words using the letters a through z. // Make the items. private void Form1_Load(object sender, EventArgs e) { List<string> values = new List<string>(); for (char ch1 = ‘a’; ch1 … Continue reading →

Posted in algorithms, mathematics | Tagged algorithms, C#, C# programming, combinations, combinatorics, example, example program, letter combinations, three-letter words, Windows Forms programming, words | Leave a comment

Generate a schedule for a round robin tournament in C#

Posted on April 19, 2015 by Rod Stephens

Click here to see a description of the algorithm the program uses to schedule a round robin tournament. Function GenerateRoundRobinOdd returns an array where results[i, j] gives the opponent of team i in round j of the round robin tournament. … Continue reading →