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How to find the kth largest element in an unsorted array of length n in O(n)?

... = n(n+1)/2 - floor(n/2)(floor(n/2)+1)/2 <= n2/2 - (n/4)2/2 = (15/32)n2 where we take advantage of n being "sufficiently large" to replace the ugly floor(n/2) factors with the much cleaner (and smaller) n/4. Now we can continue with cn + 2 (1/n) ∑i=floor(n/2) to n ai, <= cn + (2a/n...
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Is there a rule-of-thumb for how to divide a dataset into training and validation sets?

...sonBen Allison 6,54411 gold badge1111 silver badges2323 bronze badges ...
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What is Inversion of Control?

... 32 I side with @Rogerio and @Pangea. This may be a good example for constructor injection but not a good answer to the original question. IoC,...
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Getting raw SQL query string from PDO prepared statements

... 32 I modified the method to include handling output of arrays for statements like WHERE IN (?). ...
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How exactly does work?

... Chris MoschiniChris Moschini 32k1818 gold badges141141 silver badges173173 bronze badges ...
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Deserialize JSON into C# dynamic object?

... 32 You can use System.Web.Helpers.Json - it offers a Decode method that returns a dynamic object. I've also posted this info as an answer. ...
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SQL to determine minimum sequential days of access?

...mmary> /// <returns></returns> public SqlInt32 Terminate() { int max = Math.Max((int) ((sbyte) _intermediateResult.CurrentSequentialDays), (sbyte) _intermediateResult.MaxSequentialDays); return new SqlInt32(max); } } } ...
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Using Git with Visual Studio [closed]

... Callum Watkins 2,22222 gold badges2323 silver badges4040 bronze badges answered Feb 3 '09 at 15:07 Jon RimmerJon Rimmer ...
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RequestDispatcher.forward() vs HttpServletResponse.sendRedirect()

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Determine if Python is running inside virtualenv

...if not. – LISTERINE Nov 4 '14 at 16:32 3 ...