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BLOG.CSHARPHELPER.COM: Category Archive for algorithms

A plea for help: Tell me what you want to see in my blog!

Posted by Rod Stephens at 5/22/2014 5:08 AM | View Comments (1) | Add Comment

Let the user select and deselect objects in a 3D program that uses WPF, XAML, and C#

Posted by Rod Stephens at 4/29/2014 5:36 AM | Add Comment

Remove a selected part of an image in C#

Posted by Rod Stephens at 4/28/2014 5:12 AM | Add Comment

Perform hit testing in a 3D program that uses WPF, XAML, and C#

Posted by Rod Stephens at 4/25/2014 5:21 AM | Add Comment | Trackbacks

Draw a more efficient three-dimensional Menger sponge fractal using a dictionary, WPF, XAML, and C#

Posted by Rod Stephens at 4/24/2014 6:16 AM | Add Comment

Draw a three-dimensional Menger sponge fractal using WPF, XAML, and C#

Posted by Rod Stephens at 4/23/2014 5:54 AM | Add Comment

Use segments to draw arrows in a 3D model using WPF and XAML

Posted by Rod Stephens at 4/22/2014 6:05 AM | Add Comment

Draw triangle vertex normals on a 3D model using WPF and XAML

Posted by Rod Stephens at 4/21/2014 6:22 AM | Add Comment

Draw triangle surface normals on a 3D model using WPF and XAML

Posted by Rod Stephens at 4/18/2014 6:04 AM | Add Comment | Trackbacks

Draw a 3D wireframe model for a MeshGeometry3D using WPF and XAML

Posted by Rod Stephens at 4/17/2014 6:17 AM | Add Comment | Trackbacks

Draw improved 3D "line segments" using WPF and XAML

Posted by Rod Stephens at 4/16/2014 6:27 AM | Add Comment | Trackbacks

Draw two interlocked tetrahedrons defined by a cube using WPF and XAML

Posted by Rod Stephens at 4/14/2014 7:40 AM | Add Comment

Draw a 3D surface overlaid with a shaded altitude map using WPF and C#

Posted by Rod Stephens at 4/8/2014 5:50 AM | Add Comment

Draw a 3D surface overlaid with a grid using WPF and C#

Posted by Rod Stephens at 4/7/2014 7:33 AM | Add Comment | Trackbacks

Find a minimal bounding circle of a set of points in C#

Posted by Rod Stephens at 4/1/2014 6:22 AM | Add Comment

Create a 3-D surface really quickly with WPF, XAML, and C#

Posted by Rod Stephens at 3/23/2014 7:25 AM | Add Comment

Create a 3-D surface more quickly with WPF, XAML, and C#

Posted by Rod Stephens at 3/20/2014 4:03 PM | Add Comment

Draw a smooth 3-D surface with WPF, XAML, and C#

Posted by Rod Stephens at 3/18/2014 3:50 PM | Add Comment | Trackbacks

Graph a series that approximates pi in C#

Posted by Rod Stephens at 3/17/2014 9:33 AM | Add Comment

In honor of Pi Day (3.14), calculate digits of pi in C#

Posted by Rod Stephens at 3/14/2014 3:15 PM | Add Comment | Trackbacks

Draw a 3-D surface with WPF, XAML, and C#

Posted by Rod Stephens at 3/12/2014 8:50 AM | Add Comment | Trackbacks

Understand three-dimensional drawing with WPF, XAML, and C#

Posted by Rod Stephens at 3/10/2014 6:21 AM | Add Comment | Trackbacks

Probabilistically pick large random prime numbers C#

Posted by Rod Stephens at 3/5/2014 6:16 AM | Add Comment

Probabilistically determine whether a number is prime in C#

Posted by Rod Stephens at 3/4/2014 6:45 AM | Add Comment | Trackbacks

Let the user draw polygons, move them, and add points to them in C#

Posted by Rod Stephens at 2/18/2014 9:46 AM | Add Comment

Plot a heart-shaped function in C#, Part 3

Posted by Rod Stephens at 2/14/2014 12:10 PM | Add Comment

Make a program that finds and removes duplicate files in C#, Part 4 of 4

Posted by Rod Stephens at 11/15/2013 3:57 PM | Add Comment

Make a program that finds and removes duplicate files in C#, Part 3 of 4

Posted by Rod Stephens at 11/14/2013 6:14 AM | Add Comment

Make a program that finds and removes duplicate files in C#, Part 2 of 4

Posted by Rod Stephens at 11/13/2013 9:29 AM | Add Comment

Make a program that finds and removes duplicate files in C#, Part 1 of 4

Posted by Rod Stephens at 11/12/2013 9:08 AM | Add Comment

Calculate hash codes for a file in C#

Posted by Rod Stephens at 11/11/2013 9:01 AM | Add Comment

Draw text centered above and below a circle in C#

Posted by Rod Stephens at 8/19/2013 7:19 AM | Add Comment

BOOK DRAWING: Essential Algorithms (A Practical Approach to Computer Algorithms)

Posted by Rod Stephens at 8/16/2013 4:58 PM | Add Comment

Measure character positions when drawing a long string in C#

Posted by Rod Stephens at 8/16/2013 4:40 PM | Add Comment

Animate a point moving along a curve in polar coordinates in C#

Posted by Rod Stephens at 8/8/2013 8:37 AM | Add Comment

Graph a curve in polar coordinates in C#

Posted by Rod Stephens at 8/7/2013 9:05 AM | Add Comment

Fully justify paragraphs of text in C#

Posted by Rod Stephens at 7/9/2013 7:09 AM | Add Comment

Find the points of intersection between two conic sections selected by the user in C#

Posted by Rod Stephens at 6/29/2013 9:38 AM | Add Comment

Let the user select a conic section in C#

Posted by Rod Stephens at 6/28/2013 9:52 AM | Add Comment

Draw a conic section from its polynomial equation in C#

Posted by Rod Stephens at 6/24/2013 6:39 AM | Add Comment

Display a stacked graphic representation of compound interest in C#

Posted by Rod Stephens at 6/17/2013 6:19 AM | Add Comment

Display a graphic representation of compound interest in C#

Posted by Rod Stephens at 6/14/2013 10:23 AM | Add Comment

Find the points of intersection between a parabola and a hyperbola in C#

Posted by Rod Stephens at 6/10/2013 3:23 PM | Add Comment

Calculate the points where two ellipses intersect in C#, Part 4

Posted by Rod Stephens at 6/8/2013 9:38 AM | View Comments (2) | Add Comment

Calculate the points where two ellipses intersect in C#, Part 3

Posted by Rod Stephens at 6/7/2013 10:13 AM | Add Comment

Calculate the points where two ellipses intersect in C#, Part 2

Posted by Rod Stephens at 6/6/2013 9:25 AM | Add Comment

Calculate the points where two ellipses intersect in C#, Part 1

Posted by Rod Stephens at 6/5/2013 10:04 AM | Add Comment

Calculate the formula for an ellipse selected by the user in C#

Posted by Rod Stephens at 5/22/2013 3:12 PM | Add Comment

Calculate the formula for a circle selected by the user in C#

Posted by Rod Stephens at 5/21/2013 10:09 AM | Add Comment

How to extract only some of the information from a JSON file in C#

Posted by Rod Stephens at 5/15/2013 2:49 PM | Add Comment

Use JSON to serialize and deserialize objects in C#

Posted by Rod Stephens at 5/14/2013 3:19 PM | Add Comment

Apply a filter to make a color embossed image in C#

Posted by Rod Stephens at 4/7/2013 8:10 AM | Add Comment

Use branch and bound to recursively find the highest value path through a two-dimensional array of numbers in C#

Posted by Rod Stephens at 3/27/2013 8:32 AM | Add Comment

Recursively find the highest value path through a two-dimensional array of numbers in C#

Posted by Rod Stephens at 3/25/2013 9:59 AM | Add Comment

Draw a breadth-first colored binary tree in C#

Posted by Rod Stephens at 1/18/2013 6:57 AM | View Comments (2) | Add Comment

Draw a colored binary tree in C#

Posted by Rod Stephens at 1/17/2013 6:10 AM | Add Comment

Use statement lambdas in C#

Posted by Rod Stephens at 1/16/2013 6:26 AM | Add Comment

Use lambda expressions in C#

Posted by Rod Stephens at 1/15/2013 6:28 AM | Add Comment

Use anonymous methods in C#

Posted by Rod Stephens at 1/14/2013 6:43 AM | Add Comment

Use the predefined Action, Func, and EventHandler delegate types in C#

Posted by Rod Stephens at 1/11/2013 3:08 PM | Add Comment

Make a program that simulates rolling two 6-sided dice and compares the results to expected results in C#

Posted by Rod Stephens at 11/19/2012 3:00 PM | Add Comment

Calculate Fibonacci numbers in several ways in C#

Posted by Rod Stephens at 11/12/2012 9:35 PM | Add Comment

Use a cryptographic random number generator in C#

Posted by Rod Stephens at 11/7/2012 11:40 AM | Add Comment

Recursively draw equations in C#

Posted by Rod Stephens at 11/2/2012 3:19 PM | View Comments (2) | Add Comment

Use a for loop to recursively iterate over the items in an array with an unknown number of dimensions in C#

Posted by Rod Stephens at 10/30/2012 7:40 AM | Add Comment | Trackbacks

Warp images arbitrarily in C#, Part 2

Posted by Rod Stephens at 10/4/2012 12:31 PM | Add Comment

Warp images arbitrarily in C#

Posted by Rod Stephens at 10/2/2012 5:21 PM | View Comments (1) | Add Comment

Draw animated exploding 3-dimensional pie slices in C#

Posted by Rod Stephens at 9/28/2012 9:10 AM | Add Comment

Draw 3-dimensional pie slices in C#

Posted by Rod Stephens at 9/27/2012 8:21 AM | Add Comment

Calculate where a line segment and an ellipse intersect in C#

Posted by Rod Stephens at 9/24/2012 6:17 AM | Add Comment

Draw a pie chart with labels and annotations in C#

Posted by Rod Stephens at 9/18/2012 8:50 AM | Add Comment

Draw a labeled pie chart in C#

Posted by Rod Stephens at 9/17/2012 11:29 AM | Add Comment

Draw a pie chart in C#

Posted by Rod Stephens at 9/14/2012 9:30 AM | Add Comment

Initialize a Random object to produce a repeatable series of "random" numbers in C#

Posted by Rod Stephens at 9/10/2012 3:18 PM | Add Comment

Generate random polygons in C#

Posted by Rod Stephens at 8/29/2012 7:59 AM | Add Comment

Calculate the present value of a future amount of money in C#

Posted by Rod Stephens at 8/7/2012 7:43 AM | Add Comment

Add LINQ to the example that suggests words based on what the user is typing in C#

Posted by Rod Stephens at 8/1/2012 2:25 PM | Add Comment

Improve the example that suggests words based on what the user is typing in C#

Posted by Rod Stephens at 7/30/2012 8:45 AM | Add Comment

Suggest words based on what the user is typing as a smart phone does in C#

Posted by Rod Stephens at 7/27/2012 10:22 AM | Add Comment

Use the yield statement to make an enumeration in C#

Posted by Rod Stephens at 6/26/2012 7:08 AM | Add Comment

Use the Sieve of Eratosthenes to find prime numbers in a range in C#

Posted by Rod Stephens at 6/25/2012 2:56 PM | Add Comment

Compare sorting algorithms in C#, article 5 of 5

Posted by Rod Stephens at 6/22/2012 6:20 AM | Add Comment

Compare sorting algorithms in C#, article 4 of 5

Posted by Rod Stephens at 6/21/2012 6:17 AM | Add Comment

Compare sorting algorithms in C#, article 3 of 5

Posted by Rod Stephens at 6/20/2012 6:16 AM | Add Comment

Compare sorting algorithms in C#, article 2 of 5

Posted by Rod Stephens at 6/19/2012 6:12 AM | Add Comment

Compare sorting algorithms in C#, article 1 of 5

Posted by Rod Stephens at 6/18/2012 6:02 AM | View Comments (6) | Add Comment

Draw a star with a given number of points in C#

Posted by Rod Stephens at 6/4/2012 7:56 AM | Add Comment

Parse file sizes in KB, MB, GB, and so forth in C#

Posted by Rod Stephens at 6/1/2012 7:22 AM | Add Comment

Pixellate parts of an image in C#

Posted by Rod Stephens at 5/23/2012 7:29 AM | Add Comment

Draw a phi spiral (or golden spiral) in C#

Posted by Rod Stephens at 5/17/2012 7:19 AM | View Comments (3) | Add Comment

Use image processing techniques to pixellate an image and create other effects in C#

Posted by Rod Stephens at 5/16/2012 6:46 AM | Add Comment

Make a hangman game in C#

Posted by Rod Stephens at 4/19/2012 8:53 AM | Add Comment

Use LINQ to select specific words from a file to build a dictionary in C#

Posted by Rod Stephens at 4/18/2012 9:41 AM | Add Comment

Draw a nested series of golden rectangles in C#

Posted by Rod Stephens at 4/17/2012 5:36 PM | View Comments (2) | Add Comment

Examine the relationship between the Fibonacci sequence and phi in C#

Posted by Rod Stephens at 4/16/2012 9:02 AM | Add Comment

Make extension methods that randomize arrays and lists in C#

Posted by Rod Stephens at 4/4/2012 8:34 AM | Add Comment

Platonic Solids Part 4: The dodecahedron and icosahedron

Posted by Rod Stephens at 3/29/2012 6:50 AM | Add Comment

Platonic Solids Part 3: The cube and octahedron

Posted by Rod Stephens at 3/28/2012 7:20 AM | Add Comment

Platonic Solids Part 2: The tetrahedron

Posted by Rod Stephens at 3/27/2012 7:27 AM | Add Comment | Trackbacks

Platonic Solids Part 1: What are the Platonic solids?

Posted by Rod Stephens at 3/26/2012 8:21 AM | Add Comment

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