What is this algorithm? [closed] - algorithm

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I found this game and I'm very curious for know about of algorithm implemented in it.
I don't know how look for this, I don't know what is this algorithm and I want study it.
This is the game http://www.rustylake.com/puzzle-and-skill-games/coloruid.html
Really Thank you.

This seems like a basic "Flood Fill" algorithm.
It's performed on custom 'pixels', but the principle seems the same.

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J48 algorithm in weka algorithm or flowchart steps [closed]

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I am new in the machine learning area. please, I was wondering if you could provide me with algorithm or flowchart steps for J48.
note: I am using the default setting in weka.
thank you for your help.
J48 is based on Quinlan's C4.5.

What functions/algorithms produce O(n^2) time complexity? [closed]

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I'm learning about this in class and I'm really struggling to come up with any examples besides nested for loop. Can anyone share other known algorithms that have n^2 time complexity?

Algorithm to calculate the sum of a mathematical series [closed]

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Recently I came across a online tool, which given a summation calculates its formula. I have tried for many such summations and has given me correct answer.
I was curious as to which algorithm does it use to solve it.
EDIT: It turns out the tool uses wolframaplha api's. But even if you search on wolfram alpha you will get the same result.

Algorithm Visualization [closed]

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I wonder how it is possible to make a visual presentation of algorithm.
I found a very good visualization in Wikipedia like following:
If you know how to make a similar presentation, please let me know.
There are lots of libraries in various languages that can be used to visualize whatever you want, but according to this page:
http://en.wikipedia.org/wiki/File:Sorting_quicksort_anim.gif
The picture you're looking at was:
Created with: Ruby 1.8.4, RMagick.
Just for reference.

Algorithm reference [closed]

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This is a trivial question - but something I always miss in the day-to-day programming.
Is there a gook lookup reference available for the common algorithms that we usually face in our everyday programming - sorting,sequences,graphs.
The emphasis is more on the applicability and pseudocode ,rather than the mathematical proofs(which I find is what books tend to stress on).
The idea is to keep a ready reference,as and when we need to resort to one of these algorithms into our respective development project and languages.
Dictionary of Algorithms and Data Structures
How about this?
List of algorithms#Wikipedia

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