Project Euler Problem 3 Solution: Clojure

Problem description, from Project Euler What is the largest prime factor of the number N? Solution In previous problems, I was using a list of primes I got somewhere else. I figured it would be relevant to implement a prime-finding algorithm. I decided to go with simplicity, and implement the Sieve of Eratosthenes. It’s basically […]

Project Euler Problem 6 Solution: Clojure

Problem description, from Project Euler Find the difference between the sum of the squares of the first N natural numbers and the square of the sum. Solution This one actually seemed to be easier than the others. No filters required! The biggest hangup I had was that when I originally read the problem, I thought […]

Twitter Weekly Updates for 2010-04-18

New blog post: Project Euler Problem 1 Solutio… /programming/project-euler-problem-1-solution-clojure/ # Google Rebuilds Docs Platform: //bit.ly/9xciIC # Google Preparing iPad Rival?: //bit.ly/c1RUly # Adobe Flash CS5 Exports Animations To HTML5 Canvas: //bit.ly/bnkUtn # I favorited a YouTube video — interactivefurniture.de – Automatic LED Stair Lighting //youtu.be/Ir_cqS6oV5U?a # New blog post: Project Euler Problem 5 Solutio… /programming/project-euler-problem-5-solution-clojure/ […]

Project Euler Problem 5 Solution: Clojure

Problem description, from Project Euler What is the smallest number that is evenly divisible by all of the numbers from 1 to N? Solution The math Basically, we are finding the least common multiple (LCM) of the numbers (grade school math?). This can be done by generating the prime factors of each of the numbers. […]

Project Euler Problem 2 Solution: Clojure

Problem 2 Description, from Project Euler Find the sum of all the even-valued terms in the Fibonacci sequence which do not exceed four million. Solutions My first attempt The trickiest thing for me was figuring out how to write the fibonacci function in an elegant way. I know that with functional languages, recursion is supposed […]

Project Euler Problem 1 Solution: Clojure

After PhillyETE, I wanted to try out some Clojure, so I decided to solve the first problem of Project Euler. I coded up my own solution using some of the references on the Clojure site. Project Euler Problem Description, from Project Euler Find the sum of all the multiples of 3 or 5 below N. […]

Twitter Weekly Updates for 2010-04-11

3 of 5 stars to The Authorized Ender Companion by Orson Scott Card //bit.ly/c85hxa # I favorited a YouTube video — Harvard Sailing Team – Boys Will Be Girls //youtu.be/gspaoaecNAg?a # cutycapt browser shots //icio.us/o1depl # I liked a YouTube video — Zombie Snails //youtu.be/Osb7O7qmDos?a # I favorited a YouTube video — Zombie Snails //youtu.be/Osb7O7qmDos?a […]

Which font is most “chaotic”?

Twitter Weekly Updates for 2010-04-04

On page 227 of 777 of GÃ¶del, Escher, Bach. Typographical number theory //bit.ly/cCCYh0 # I'm #reading The Authorized Ender Companion by Orson Scott Card //bit.ly/9uW9Cg # raytracing article //www.iquilezles.org/www/material/nvscene2008/rwwtt.pdf //icio.us/wqdqd5 # eclim – eclipse + vim //eclim.org/ //icio.us/edh0nu # I'm #reading Neuromancer by William Gibson //bit.ly/9oJqzd # On page 36 of 271 of Neuromancer. Case […]

Pygmalion Book Notes

Loved the dialect (I enjoy when dialect is used in books in general) looking up the Pygmalion myth and discovering the archetype for She’s All That realizing this is probably the source of the Eliza chat bot’s name Liked Higgins’ misanthropy Hated how Eliza didn’t wind up with Higgins in the end–at first, and then […]

Twitter Weekly Updates for 2010-03-28

I subscribed to Rickder19's channel on YouTube //www.youtube.com/user/Rickder19?feature=autoshare_twitter # I favorited a YouTube video — Joe Wong at RTCA Dinner //youtu.be/buSv1jjAels?a # javascript markdown interpeter //icio.us/qpdxoc # @guamaniac ouch, texting is dangerous! in reply to guamaniac # On Locust Walk, I hear stead clicks behind me. Probably someone on crutches. Must check to make sure […]

Word Jumble Game: Part 5

I used jQuery for the UI. I am a recent convert to jQuery, having mostly used Prototype + Scriptaculous. The word list is embedded into the page script as a javascript array. On document ready, html is generated, which writes the first and last word to the page, and creates blank input boxes for the […]

Twitter Weekly Updates for 2010-03-21

I subscribed to TheArnauz's channel on YouTube //www.youtube.com/user/TheArnauz?feature=autoshare_twitter # I favorited a YouTube video — Keri Hilson – Knock You Down //youtu.be/6C2OyPpxV_4?a # textmate tips //icio.us/x4itdp # handbook of applied cryptography //icio.us/v14rkb # Powered by Twitter Tools

Word Jumble Game: Part 4

Search The problem of generating the chain of clues is a simple search problem. In this case, depth-first search was used, because the algorithm would attempt path depth-wise and only explore another branch if the generated chain was not long enough. Another tactic would have been to use a breadth first search. To use breadth-first […]

JRun Virtual Directories

I’m posting this because I always spend half-an-hour trying to find this information. To set up virtual mappings or virtual directories (what I call them) for ColdFusion on JRun on OSX, edit the jrun-web.xml file in (this is where mine was, you may have to look elsewhere): Add an entry to the jrun-web-app xml element […]

Jamie Ly

Developer, student, person