Algorithm Tutorials

#1

Post by edw519 » Thu, Dec 17, 2009, 1:35 PM UTC

Algorithm Tutorials
topcoder.com

Re: Algorithm Tutorials

#2

Post by eordano » Thu, Dec 17, 2009, 4:17 PM UTC

I used to train hard for the topcoder competition. It's a nice community; and those tutorials are very useful.

The ones that I found more interesting were the ones on line sweep and geometric algorithms.

On Fenwick's Trees; this tutorial http://www.topcoder.com/tc?module=Static&d1=tutorials&#3... is really good. Although, the original paper is well-explained: (link to the author's website) http://www.cs.auckland.ac.nz/~peter-f/ ("A new data structure for cumulative frequency tables")

And on bit manipulation; I highly recommend you read this... you'll be thinking in zeroes and ones for a while... http://www.topcoder.com/tc?module=Static&d1=tutorials&#3...

Re: Algorithm Tutorials

#3

Post by atamyrat » Thu, Dec 17, 2009, 4:33 PM UTC

eordano wrote: post #2

I used to train hard for the topcoder competition. It's a nice community; and those tutorials are very useful. The ones that I found more interesting were the ones on line sweep and geometric algorithms. On Fenwick's Trees; this tutorial http://www.topcoder.com/tc?module=Static&d1=tutorials&#3... is really good. Although, the original paper is well-explained: (link to the author's website) http://www.cs.auckland.ac.n…

IOI participant? Hello and welcome to HN!

Re: Algorithm Tutorials

#4

Post by hello00768 » Thu, Dec 17, 2009, 7:04 PM UTC

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Re: Algorithm Tutorials

#5

Post by protez » Thu, Dec 17, 2009, 7:16 PM UTC

hello00768 wrote: post #4

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please delete this shit.

Re: Algorithm Tutorials

#6

Post by icey » Thu, Dec 17, 2009, 7:34 PM UTC

protez wrote: post #5

hello00768 wrote: post #4

welcome to: http://www.wowowbiz.com/ The website wholesale for many kinds of fashion shoes, like the nike,jorda-n,prada,ad-idas, also including the jeans,shir-ts,bags,ha-t and the decorations. All the products are free shipping, and the the price is competitive, and also can accept the paypal payment.,after the payment, can ship within short time. http://www.wowowbiz.com/

please delete this shit.

In case people are unaware, you can flag a comment by hitting the reply link - there is a flag option on the reply screen.

Re: Algorithm Tutorials

#7

Post by eordano » Fri, Dec 18, 2009, 1:58 AM UTC

atamyrat wrote: post #3

eordano wrote: post #2

I used to train hard for the topcoder competition. It's a nice community; and those tutorials are very useful. The ones that I found more interesting were the ones on line sweep and geometric algorithms. On Fenwick's Trees; this tutorial http://www.topcoder.com/tc?module=Static&d1=tutorials&#3... is really good. Although, the original paper is well-explained: (link to the author's website) http://www.cs.auckland.ac.n…

IOI participant? Hello and welcome to HN!

Thank you :D

I've read HN for two years now... made an account just a few days ago... I don't write a very good english (I understand it really well though) so I've never felt like commenting...

I've been a IOI participant twice -> and twice a looser.

Re: Algorithm Tutorials

#8

Post by silvajoao » Fri, Dec 18, 2009, 9:07 AM UTC

icey wrote: post #6

protez wrote: post #5

Earlier quoted context omitted.

please delete this shit.

In case people are unaware, you can flag a comment by hitting the reply link - there is a flag option on the reply screen.

I can't help but feel curious about the "shit" that was deleted.

It's not cool to just have a [dead] remark; could there be a better solution to remove the noise, yet allow curious people to find out what are the replies referring to?

Re: Algorithm Tutorials

#9

Post by RiderOfGiraffes » Fri, Dec 18, 2009, 9:59 AM UTC

silvajoao wrote: post #8

icey wrote: post #6

Earlier quoted context omitted.

In case people are unaware, you can flag a comment by hitting the reply link - there is a flag option on the reply screen.

I can't help but feel curious about the "shit" that was deleted. It's not cool to just have a [dead] remark; could there be a better solution to remove the noise, yet allow curious people to find out what are the replies referring to?

Go to your profile and turn on "Show Dead". I used to leave it on because, like you, I was curious. But over time I've come to trust the deletions, and now believe that, on the whole, the deleted material simply wastes my time.