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Euler Problem 14: Learn to Memoize

This is going to be fun. It’s a bit of LINQ, a bit of academic Computer Science, and a bit of meteorology. Euler Problem 14 concerns a sequence referred to as hailstorm numbers. Hailstorm number...

Posted 04 February 2010 03:48 PM by wwagner | 1 comment(s)

Filed under: LINQ, C#, C# General, DevCenterPosts, Euler

Long time, no Euler (or YAEPS # 13)

Well, it’s been a long time since I’ve taken the time to solve and blog about one of the Euler problems.  It was time to pick this up again. Problem 13 says: Work out the first 10 digits of the sum...

Posted 25 August 2009 11:15 PM by wwagner | 3 comment(s)

Filed under: LINQ, C#, C# General, DevCenterPosts, Euler

Euler Problem 12

It’s been a long time since I have worked on any of the Euler problems. I simply haven’t had time. Well, it was time to spend a bit of time just exercising the math part of my mind, and solve...

Posted 23 March 2009 01:18 PM by wwagner | 2 comment(s)

Filed under: C#, C# General, Euler

Euler Problem 10

Patrick posted his solution earlier this week. I figure it was time to add mine. Also, Octavio Hernandez pointed out in the comments to problem 8 that he had discussed similar code constructs in his blog...

Posted 31 August 2008 01:05 PM by wwagner | 2 comment(s)

Filed under: LINQ, C#, .NET General, C# General, DevCenterPosts, Euler

Euler Problem 9

I was going to wait a bit to post this, but Patrick Steele posted his solution , so I figured I should post mine. Patrick took the straight out brute force approach. I decided to think a bit differently...

Posted 28 August 2008 02:03 PM by wwagner | 3 comment(s)

Filed under: LINQ, C#, C# General, Euler

Euler Problem 7

Yes, it's true that I've been very lax in working on these problems. It's been a combination of the day job, finishing all the editing tasks on "More Effective C#", and actually trying...

Posted 14 August 2008 09:30 AM by wwagner | 7 comment(s)

Filed under: C#, C# General, DevCenterPosts, Euler

Project Euler problem 6

Euler Problem six asks you to find the difference between the sum of squares and the square of the sum for the natural numbers 1 through 100. I took the easy route, and made a brute force implementation...

Posted 11 April 2008 03:24 PM by wwagner | 1 comment(s)

Filed under: LINQ, C#, C# General, Euler

Euler Problem 5

Well, it's time to post another solution and look at how LINQ and C# 3.0 can create elegant code for these problems. The fifth problem asks you to find the smallest number that is divisible by all...

Posted 08 April 2008 02:13 PM by wwagner | 1 comment(s)

Filed under: C#, C# General, Euler

Euler Problem 4: Finding Palindrome numbers

The fourth Euler problem asks you to find the largest palindrome number that is the product of two three digit numbers. For example, the number 919 is a palindrome: it's the same forward and backwards...

Posted 06 April 2008 10:37 PM by wwagner | 6 comment(s)

Filed under: LINQ, C# General, Euler

Notes on Euler Problem 3

Here are my notes on the third Project Euler problem. The problem is "What is the largest prime factor of the number 600,851,475,143?" Once again, this is a problem that is best solved creating...

Posted 28 March 2008 03:28 PM by wwagner | 5 comment(s)

Filed under: C# General, DevCenterPosts, Euler

Discussion on Project Euler Problem 2

The second Euler problem asks you to find the sum of all even valued terms in the Fibonacci sequence which do not exceed 4,000,000. Let's look at the solution from the outside in. Here's the query...

Posted 27 March 2008 10:20 AM by wwagner | with no comments

Filed under: C#, C# General, DevCenterPosts, Euler