BLOG.CSHARPHELPER.COM: Category Archive for mathematics

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BLOG.CSHARPHELPER.COM: Category Archive for mathematics

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

Use the BigInteger structure in C#

Posted by Rod Stephens at 3/3/2013 2:49 PM | Add Comment

Generate letters (or other random values) with given frequencies in C#

Posted by Rod Stephens at 1/23/2013 6:31 AM | 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

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

Graph the sine, cosine, and tangent functions in C#

Posted by Rod Stephens at 9/20/2012 12:43 PM | 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

Book Review: The Manga Guide to Linear Algebra

Posted by Rod Stephens at 8/30/2012 9:34 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

Compare the performance of simple arithmetic operations in C#

Posted by Rod Stephens at 7/24/2012 7:26 AM | Add Comment

Graph the probability of an event occurring in a given number of trials in C#

Posted by Rod Stephens at 7/23/2012 1:50 PM | Add Comment

Determine the number of trials needed to reach a certain probability of an event occurring in C#

Posted by Rod Stephens at 7/20/2012 8:48 AM | Add Comment

Calculate the probability of an event occurring in a given number of trials in C#

Posted by Rod Stephens at 7/19/2012 8:12 AM | Add Comment

Understand probabilities of unrelated events (and escaping zombies)

Posted by Rod Stephens at 7/17/2012 8:50 PM | 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

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

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

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

Platonic Solids Part 1: What are the Platonic solids?

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

Use "banker's rounding" and "normal" rounding in C#

Posted by Rod Stephens at 3/22/2012 1:45 PM | Add Comment

Use a scroll bar to change the cutoff value for binary contrast enhancement in C#

Posted by Rod Stephens at 2/14/2012 1:05 PM | Add Comment

Perform binary contrast enhancement on an image in C#

Posted by Rod Stephens at 2/13/2012 9:10 AM | Add Comment

Make stable appointment assignments based on customer preferences in C#

Posted by Rod Stephens at 1/30/2012 7:23 AM | Add Comment

Graph an equation entered by the user in C#

Posted by Rod Stephens at 1/24/2012 1:17 PM | Add Comment

Graph an equation y = F(x) in C#

Posted by Rod Stephens at 1/23/2012 8:49 AM | Add Comment

Find and display solutions to the "find the squares" puzzle in C#

Posted by Rod Stephens at 1/11/2012 10:58 AM | Add Comment

Draw a large circle that circumscribes three smaller tangent circles in C#

Posted by Rod Stephens at 12/29/2011 8:25 AM | Add Comment

Puzzle: find the squares in C#

Posted by Rod Stephens at 12/19/2011 9:41 AM | Add Comment

Draw four interlocking Heighway dragons in C#

Posted by Rod Stephens at 12/13/2011 9:44 AM | Add Comment

Center a fractal Heighway dragon curve in C#

Posted by Rod Stephens at 12/12/2011 2:53 PM | Add Comment

Use XOR to swap two numbers in C#

Posted by Rod Stephens at 12/9/2011 11:36 AM | Add Comment

Draw a fractal Heighway dragon curve in C#

Posted by Rod Stephens at 12/8/2011 5:51 PM | Add Comment

Find and display solutions to the equilateral triangles puzzle in C#

Posted by Rod Stephens at 12/5/2011 8:03 AM | Add Comment

Make and use bitmasks in C#

Posted by Rod Stephens at 12/3/2011 2:17 PM | Add Comment

Understand how to use bit masks in C#

Posted by Rod Stephens at 12/2/2011 3:29 PM | Add Comment

Use bitwise operations in C#

Posted by Rod Stephens at 12/1/2011 8:17 AM | Add Comment

Make an extension method that randomizes a two-dimensional array in C#

Posted by Rod Stephens at 11/28/2011 9:21 AM | Add Comment

Draw an Apollonian gasket with circles filled by random colors in C#

Posted by Rod Stephens at 11/23/2011 10:49 AM | Add Comment

Draw an Apollonian gasket (or Apollonian packing) in C#

Posted by Rod Stephens at 11/22/2011 8:32 AM | Add Comment

Puzzle: find the equilateral triangles in C#

Posted by Rod Stephens at 11/18/2011 11:00 AM | Add Comment

Convert latitudes and longitudes into distances on the globe in C#

Posted by Rod Stephens at 11/15/2011 9:20 AM | Add Comment

Draw three circles and find circles that are tangent to all three in C#

Posted by Rod Stephens at 11/14/2011 7:49 AM | Add Comment

Find circles that are tangent to three given circles (Apollonius' Problem) in C#

Posted by Rod Stephens at 11/11/2011 6:51 AM | Add Comment

Use steganography to hide one large picture inside another in C#

Posted by Rod Stephens at 11/10/2011 7:32 AM | Add Comment

Use steganography to hide one picture inside another in C#

Posted by Rod Stephens at 11/9/2011 11:06 PM | View Comments (1) | Add Comment

Draw a circle through three points in C#

Posted by Rod Stephens at 11/8/2011 9:38 AM | View Comments (2) | Add Comment

Compare mileage and fuel consumption in the United States, United Kingdom, and metric units in C#

Posted by Rod Stephens at 10/24/2011 7:37 AM | Add Comment

Compare car costs including long term mileage in C#

Posted by Rod Stephens at 10/22/2011 9:22 AM | Add Comment

Handle a NumericUpDown control's value change events in C#

Posted by Rod Stephens at 10/17/2011 9:52 AM | Add Comment

Use a NumericUpDown control to let the user enter decimal values in C#

Posted by Rod Stephens at 10/14/2011 2:17 PM | Add Comment

Map numeric values to and from colors in a color gradient in C#

Posted by Rod Stephens at 10/7/2011 2:46 PM | Add Comment

Examine different investment strategies with Dow Jones Industrial Average data in C#

Posted by Rod Stephens at 10/6/2011 1:35 PM | Add Comment

Graph historical Dow Jones Industrial Average values in C#

Posted by Rod Stephens at 10/5/2011 7:15 AM | Add Comment

Make extension methods that convert numbers between Arabic and Roman numerals in C#

Posted by Rod Stephens at 9/25/2011 8:53 AM | Add Comment

Make a map zooming program create hotspot code in C#

Posted by Rod Stephens at 9/21/2011 12:15 PM | Add Comment

Display a map at different scales with hotspots that the user can click in C#

Posted by Rod Stephens at 9/20/2011 12:33 PM | Add Comment

Measure distances on a map with a scale and display them with limited significant digits in C#

Posted by Rod Stephens at 9/15/2011 10:17 AM | Add Comment

Display a floating point number with a specific number of significant digits in C#

Posted by Rod Stephens at 9/14/2011 6:37 AM | Add Comment

Calculate how long it will take to pay off a credit card by making minimum payments in C#

Posted by Rod Stephens at 8/22/2011 7:34 AM | Add Comment

Calculate the future value of a monthly investment with interest in C#

Posted by Rod Stephens at 8/21/2011 7:04 AM | Add Comment

Draw a colored Pickover popcorn fractal in C#

Posted by Rod Stephens at 8/17/2011 6:36 AM | Add Comment

Draw a Pickover popcorn fractal in C#

Posted by Rod Stephens at 8/16/2011 7:08 AM | Add Comment

Graph historical stock prices in C#

Posted by Rod Stephens at 8/7/2011 7:31 AM | Add Comment

Graph savings from a normal bank account, a 401(k), and a Roth IRA account in C#

Posted by Rod Stephens at 8/5/2011 6:05 AM | Add Comment

List your next 10 birthdays and their days of the week in C#

Posted by Rod Stephens at 7/29/2011 7:49 AM | Add Comment

Refine the ComplexNumber class in C#

Posted by Rod Stephens at 7/13/2011 9:10 AM | Add Comment

Use a scroll bar to let the user select a non-integer value in C#

Posted by Rod Stephens at 7/5/2011 8:15 AM | Add Comment

Roughly compare the savings a normal bank account would give versus a 401(k) (a US tax thing) in C#

Posted by Rod Stephens at 6/14/2011 7:27 AM | Add Comment

Generate a schedule for a round robin tournament in C#

Posted by Rod Stephens at 5/31/2011 7:15 AM | Add Comment

Make an extension method that calculates standard deviation in C#

Posted by Rod Stephens at 5/27/2011 7:18 AM | Add Comment

Draw an animated hypotrochoid (Spirograph curve) in C#

Posted by Rod Stephens at 5/4/2011 7:09 AM | Add Comment

Langton's Ant contest winners

Posted by Rod Stephens at 4/1/2011 9:20 AM | Add Comment

Display Pascal's triangle in C#

Posted by Rod Stephens at 3/31/2011 6:38 AM | Add Comment

Use LINQ's Min, Max, and Average extension methods to get the minimum, maximum, and average values in an array in C#

Posted by Rod Stephens at 2/27/2011 6:29 AM | Add Comment

Contest: Langton's Ant Simulation

Posted by Rod Stephens at 2/26/2011 6:41 AM | View Comments (5) | Add Comment

Display a continuously updating graph of stock prices taken from the internet in C#

Posted by Rod Stephens at 2/3/2011 4:39 PM | Add Comment

Find a least squares Weibull curve fit for a set of points in C#

Posted by Rod Stephens at 11/25/2010 6:38 AM | Add Comment

Find an exponential least squares fit for a set of points in C#

Posted by Rod Stephens at 11/24/2010 9:43 AM | Add Comment

Find a polynomial least squares fit for a set of points in C#

Posted by Rod Stephens at 11/8/2010 8:20 AM | View Comments (1) | Add Comment

Find a linear least squares fit for a set of points in C#

Posted by Rod Stephens at 11/6/2010 4:08 PM | View Comments (2) | Add Comment

Get stock prices from the internet in C#

Posted by Rod Stephens at 10/27/2010 6:22 AM | Add Comment

See if a number is expressible as a sum of two cubes (and calculate Taxicab numbers) in C#

Posted by Rod Stephens at 10/18/2010 7:29 AM | Add Comment

Calculate the Nth root of a number in C#

Posted by Rod Stephens at 10/15/2010 6:12 AM | View Comments (2) | Add Comment

Use Newton's method to draw fractals for equations of the form F(z) = z^N + z^(N-1) + ... + z + 1 in C#

Posted by Rod Stephens at 7/24/2010 7:52 AM | Add Comment

Use Newton's method to draw fractals for equations of the form F(z) = z^C - C^z in C#

Posted by Rod Stephens at 7/23/2010 5:58 AM | Add Comment

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