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hacker.org Forum Index
Search found 13 matches
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Topic: Code optimization
papa

Replies: 57
Views: 63728
PostForum: Crossflip   Posted: Mon Sep 05, 2011 11:36 pm   Subject: Code optimization
Optimizing the O(n^3) Gaussian Elimination e.g. by grouping booleans to integers took me to level ~400. Then I redesigned my algorithm. Now it has less than O(n^2) complexity and solves even the last ...
Topic: Captcha
papa

Replies: 13
Views: 11204
PostForum: Challenges   Posted: Wed Feb 25, 2009 1:59 pm   Subject: Captcha
Of course the angle is different. Only comparing the pixels won't do it.
Topic: Captcha
papa

Replies: 13
Views: 11204
PostForum: Challenges   Posted: Wed Feb 25, 2009 1:03 pm   Subject: Captcha
I didn't bother reading the words but only compared the pictures to each other.
Topic: Enigma
papa

Replies: 5
Views: 4771
PostForum: Challenges   Posted: Wed Jan 14, 2009 6:38 pm   Subject: Enigma
The linked machine seems to have a strange carry over behavior. When all three rotors are rotated, this takes place in two steps and the second one is rotated twice. Is this a bug in the swf or did I ...
Topic: King Mouse
papa

Replies: 19
Views: 12933
PostForum: Challenges   Posted: Sat Nov 22, 2008 10:27 pm   Subject: King Mouse
This site was recommended in the most popular German computer magazine c't about one month ago. Therefore many Germans (me too) joined this forum within the last weeks and started solving challenges. ...
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